feat(sdk): AuthGoogleApp mutation and Google ID token auth without Firebase

Made-with: Cursor

.cursor/commands/commit.md

@@ -0,0 +1,26 @@
+# Commit
+
+## Overview
+Commit changes with a two-tier strategy: prioritize changes from this chat, then fall back to any other uncommitted changes.
+
+## Steps
+
+1. **Identify changes from this chat**
+   - From the current conversation context, determine which files you (the agent) have created, modified, or deleted in this chat.
+   - List these "chat-touched" file paths.
+
+2. **Check git status**
+   - Run `git status --short` in each workspace root to see uncommitted changes.
+
+3. **Choose what to commit**
+   - **If** any uncommitted changes exist in chat-touched files: stage and commit only those chat-touched files. Use a commit message that summarizes the work done in this chat.
+   - **Else** (all chat-touched changes are already committed): stage and commit any other uncommitted changes. Use a commit message that summarizes those remaining changes.
+
+4. **Perform the commit**
+   - Stage the chosen files with `git add` (exclude `.idea/` and other IDE/config files unless they are part of the intended changes).
+   - Run `git commit` with a clear, conventional commit-style message.
+   - Use PowerShell-safe syntax (e.g. `;` instead of `&&`, avoid bash heredoc).
+
+## Notes
+- If there are no uncommitted changes at all, report that and do nothing.
+- When multiple workspace roots exist, apply this logic per repo (check status in each root and commit accordingly).

.cursor/commands/run.md

@@ -0,0 +1,10 @@
+# Run app on device
+
+Build, install, and launch the app on the connected USB Android device.
+
+## What to do
+
+1. Run `./gradlew installDebug` (use `gradlew.bat` on Windows).
+2. Ensure the device is connected via USB with USB debugging enabled.
+3. After a successful install, launch the app with `adb shell am start -n org.db3.airmq/.MainActivity`.
+4. Report the device name and that the app was launched.

.cursor/rules/app-recreation-core.mdc

@@ -5,9 +5,22 @@ alwaysApply: true
 
 # AIRMQ Recreation Core Rules
 
+## CRITICAL: Path check before any edit
+
+**BEFORE editing any file, verify its path.**
+
+- Path contains `airmq-android` but **NOT** `airmq-android-2026` → **NEVER EDIT.** Read-only reference.
+- Path contains `airmq-android-2026` → OK to edit.
+
+Example: `C:\Users\sysop\Desktop\airmq-android\app\...` → **DO NOT MODIFY.**
+
+## Hard repository constraint
+
+ALL CHANGES ONLY IN `airmq-android-2026` REPO; NO CHANGES EVER IN `airmq-android`.
+
 ## Repository boundaries
 
-1. Do not modify anything under `C:\Users\sysop\Desktop\airmq-android`.
+1. **NEVER** modify anything under `C:\Users\sysop\Desktop\airmq-android`.
 2. Treat `airmq-android` as read-only reference only.
 3. Create and apply all code/config/build changes only under `C:\Users\sysop\Desktop\airmq-android-2026`.
 
@@ -16,6 +29,11 @@ alwaysApply: true
 - When referencing legacy implementation details, copy behavior intentionally into the new project rather than editing old files.
 - If a task appears to require modifying the old project, stop and propose an equivalent change in `airmq-android-2026` instead.
 
+## Naming convention
+
+- Use `AirMQ` everywhere for product naming.
+- Never use mixed-case variants in text, docs, comments, identifiers, filenames, or symbols.
+
 ## Baseline architecture and platform stack
 
 Use this stack as the default foundation for all implementation work in `airmq-android-2026`:
@@ -23,7 +41,18 @@ Use this stack as the default foundation for all implementation work in `airmq-a
 1. Jetpack Compose for UI.
 2. Compose Navigation 3 as the in-app navigation system.
 3. Firebase for mobile backend capabilities (for example auth, analytics, crash reporting, messaging, or remote config as needed).
-4. Google Maps platform for map rendering and map-related interactions.
+4. OpenStreetMap platform for map rendering and map-related interactions.
 5. Apollo GraphQL for GraphQL schema integration, client generation, and network operations.
 
 If a requested change conflicts with this baseline, ask for explicit approval before introducing an alternative.
+
+## Temporary or implicit implementations
+
+When implementing something implicitly or obviously temporary, document it in `temp.md` at the project root with all important details:
+
+- What was implemented
+- Why it is temporary or implicit
+- Location (files, components, modules)
+- Any follow-up work or conditions for proper replacement
+
+Create `temp.md` if it does not exist.

.cursor/rules/screen-ui-contract.mdc

@@ -0,0 +1,41 @@
+---
+description: Screen UI contract structure for State, Action, and Event
+alwaysApply: false
+---
+# Screen UI Contract Rule
+
+Every screen must define its contract in a `*ScreenContract.kt` file using `State`, `Action`, and `Event`.
+
+## Required structure
+
+1. Define `State` with all static UI data required to render the screen.
+2. Define `Action` (enum or sealed interface) for what the ViewModel does.
+3. Define `Event` (enum or sealed interface) for user interactions.
+
+## State guidelines
+
+- `State` must include stable screen data (for example `deviceName`, `deviceId`, `isSharingEnabled`).
+- Do not put user interaction triggers in `State`; those belong to `Event`.
+
+## Action guidelines
+
+- Use `Action` for ViewModel-driven outcomes such as navigation or side effects.
+- Example: `Action.NavigateTo*Screen`, `Action.Show*Toast`
+
+## Event guidelines
+
+- Use `Event` for user-originated input.
+- Examples: `Event.*ButtonClicked`, `Event.*InputChanged(value)`.
+
+## Example
+
+```kotlin
+data class State(val deviceName: String, val deviceId: String, val isSharingEnabled: Boolean)
+
+sealed interface Action { data object NavigateToScreenX : Action }
+
+sealed interface Event {
+    data object XButtonClicked : Event
+    data class InputChanged(val value: String) : Event
+}
+```

.gitignore

@@ -7,9 +7,16 @@
 /.idea/workspace.xml
 /.idea/navEditor.xml
 /.idea/assetWizardSettings.xml
+/.idea/deviceManager.xml
+/.idea/gradle.xml
+/.idea/misc.xml
+.idea/inspectionProfiles/
 .DS_Store
 /build
 /captures
 .externalNativeBuild
 .cxx
 local.properties
+**/build/
+.kotlin/
+/.idea/**/workspace.xml

.idea/gradle.xml

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="testRunner" value="CHOOSE_PER_TEST" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>

.idea/markdown.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MarkdownSettings">
+    <option name="previewPanelProviderInfo">
+      <ProviderInfo name="Compose (experimental)" className="com.intellij.markdown.compose.preview.ComposePanelProvider" />
+    </option>
+  </component>
+</project>

.idea/misc.xml

@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
-</project>

app/build.gradle.kts

@@ -1,9 +1,28 @@
+import com.android.build.api.dsl.ApplicationExtension
+import java.util.Properties
+
 plugins {
     alias(libs.plugins.android.application)
+    alias(libs.plugins.hilt.android)
+    alias(libs.plugins.ksp)
     alias(libs.plugins.kotlin.compose)
+    alias(libs.plugins.google.services)
+    alias(libs.plugins.firebase.crashlytics)
 }
 
-android {
+fun gitCommitCount(): String {
+    return runCatching {
+        val process = ProcessBuilder("git", "rev-list", "--count", "HEAD")
+            .redirectErrorStream(true)
+            .start()
+        val output = process.inputStream.bufferedReader().use { it.readText().trim() }
+        if (process.waitFor() == 0 && output.isNotBlank()) output else "local"
+    }.getOrElse { "local" }
+}
+
+val debugBuildId = gitCommitCount()
+
+extensions.configure<ApplicationExtension> {
     namespace = "org.db3.airmq"
     compileSdk {
         version = release(36) {
@@ -16,12 +35,16 @@ android {
         minSdk = 24
         targetSdk = 36
         versionCode = 1
-        versionName = "1.0"
+        versionName = "3.0.0-pre"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
     buildTypes {
+        getByName("debug") {
+            versionNameSuffix = "_debug_$debugBuildId"
+        }
+
         release {
             isMinifyEnabled = false
             proguardFiles(
@@ -40,22 +63,36 @@ android {
 }
 
 dependencies {
+    // AirMQ SDK
+    implementation(project(":sdk"))
+
+    // OSM
+    implementation(libs.osmdroid.android)
+
+    // Android
     implementation(libs.androidx.core.ktx)
     implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.lifecycle.runtime.compose)
+    implementation(libs.androidx.lifecycle.viewmodel.ktx)
+    implementation(libs.androidx.lifecycle.viewmodel.compose)
     implementation(libs.androidx.activity.compose)
     implementation(platform(libs.androidx.compose.bom))
     implementation(libs.androidx.compose.ui)
     implementation(libs.androidx.compose.ui.graphics)
     implementation(libs.androidx.compose.ui.tooling.preview)
     implementation(libs.androidx.compose.material3)
+    implementation(libs.androidx.compose.foundation)
     implementation(libs.androidx.navigation.compose)
-    implementation(platform(libs.firebase.bom))
-    implementation(libs.firebase.analytics)
-    implementation(libs.firebase.crashlytics)
-    implementation(libs.firebase.messaging)
-    implementation(libs.google.maps.compose)
-    implementation(libs.play.services.maps)
-    implementation(libs.apollo.runtime)
+    implementation(libs.hilt.android)
+    implementation(libs.androidx.hilt.navigation.compose)
+    implementation(libs.androidx.credentials)
+    implementation(libs.play.services.location)
+    implementation(libs.kotlinx.coroutines.play.services)
+    implementation(libs.androidx.credentials.play.services.auth)
+    implementation(libs.googleid)
+    ksp(libs.hilt.compiler)
+
+    // Tests
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)

app/google-services.json

@@ -0,0 +1,47 @@
+{
+  "project_info": {
+    "project_number": "223884730019",
+    "project_id": "db3-airmq-debug",
+    "storage_bucket": "db3-airmq-debug.firebasestorage.app"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:223884730019:android:ebe25591cd4c41c2562916",
+        "android_client_info": {
+          "package_name": "org.db3.airmq"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "223884730019-nrh7lbjumja79jlci98u54jjc9utc988.apps.googleusercontent.com",
+          "client_type": 1,
+          "android_info": {
+            "package_name": "org.db3.airmq",
+            "certificate_hash": "d9df75253752259b83100ffb1c809615b9216be2"
+          }
+        },
+        {
+          "client_id": "223884730019-0ddlndpmfesrt1vk5vdsqgeudkmoanls.apps.googleusercontent.com",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": "AIzaSyCcgdvdp8xec2dKUqlQHl9peQAyOWRVga4"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": [
+            {
+              "client_id": "223884730019-0ddlndpmfesrt1vk5vdsqgeudkmoanls.apps.googleusercontent.com",
+              "client_type": 3
+            }
+          ]
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

app/src/androidTest/java/org/db3/airmq/ExampleInstrumentedTest.kt

@@ -1,24 +0,0 @@
-package org.db3.airmq
-
-import androidx.test.platform.app.InstrumentationRegistry
-import androidx.test.ext.junit.runners.AndroidJUnit4
-
-import org.junit.Test
-import org.junit.runner.RunWith
-
-import org.junit.Assert.*
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-@RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
-    @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
-        assertEquals("org.db3.airmq", appContext.packageName)
-    }
-}

app/src/debug/AndroidManifest.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:usesCleartextTraffic="true"
+        tools:replace="android:usesCleartextTraffic" />
+</manifest>

app/src/main/AndroidManifest.xml

@@ -2,7 +2,12 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+
     <application
+        android:name=".AirMQApplication"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"

app/src/main/kotlin/org/db3/airmq/AirMQApplication.kt

@@ -0,0 +1,7 @@
+package org.db3.airmq
+
+import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
+
+@HiltAndroidApp
+class AirMQApplication : Application()

app/src/main/kotlin/org/db3/airmq/MainActivity.kt

@@ -6,16 +6,27 @@ import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.ui.Modifier
-import org.db3.airmq.features.navigation.AirMqNavGraph
+import dagger.hilt.android.AndroidEntryPoint
+import org.db3.airmq.features.entry.CityInitializer
+import org.db3.airmq.features.navigation.AirMQNavGraph
+import org.db3.airmq.sdk.city.CityService
 import org.db3.airmq.ui.theme.AirMQTheme
+import javax.inject.Inject
 
+@AndroidEntryPoint
 class MainActivity : ComponentActivity() {
+
+    @Inject
+    lateinit var cityService: CityService
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         enableEdgeToEdge()
         setContent {
             AirMQTheme {
-                AirMqNavGraph(modifier = Modifier.fillMaxSize())
+                CityInitializer(cityService = cityService) {
+                    AirMQNavGraph(modifier = Modifier.fillMaxSize())
+                }
             }
         }
     }

app/src/main/kotlin/org/db3/airmq/features/city/CityScreen.kt

@@ -1,14 +1,409 @@
 package org.db3.airmq.features.city
 
+import android.Manifest
+import android.content.pm.PackageManager
+import android.widget.Toast
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.core.content.ContextCompat
+import com.google.android.gms.location.LocationServices
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.tasks.await
+import kotlinx.coroutines.withContext
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Switch
+import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import org.db3.airmq.features.common.MockScreenScaffold
-import org.db3.airmq.features.common.ScreenAction
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateMapOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.rotate
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.hilt.navigation.compose.hiltViewModel
+import org.db3.airmq.R
+import org.db3.airmq.features.city.CityScreenContract.Action
+import org.db3.airmq.features.city.CityScreenContract.Event
+import org.db3.airmq.features.city.CityScreenContract.State
+import org.db3.airmq.sdk.city.domain.City
+import org.db3.airmq.ui.theme.AirMQTheme
 
 @Composable
-fun CityScreen(onBackToDashboard: () -> Unit) {
-    MockScreenScaffold(
-        title = "City",
-        subtitle = "Mock city management screen.",
-        actions = listOf(ScreenAction("Back to Dashboard", onBackToDashboard))
+fun CityScreen(
+    onNavigateBack: () -> Unit,
+    viewModel: CityViewModel = hiltViewModel()
+) {
+    val uiState by viewModel.uiState.collectAsState()
+    val context = LocalContext.current
+    val activity = context as? android.app.Activity
+    val scope = rememberCoroutineScope()
+
+    val permissionLauncher = rememberLauncherForActivityResult(
+        contract = ActivityResultContracts.RequestMultiplePermissions()
+    ) { result ->
+        val granted = result.values.any { it }
+        scope.launch {
+            val location = if (granted && activity != null) {
+                withContext(Dispatchers.IO) {
+                    runCatching {
+                        LocationServices.getFusedLocationProviderClient(activity).getLastLocation().await()
+                    }.getOrNull()
+                }
+            } else null
+            viewModel.onEvent(Event.EnableDetectAutomaticallyResult(location))
+        }
+    }
+
+    val onDetectAutomaticallyChange: (Boolean) -> Unit = { enabled ->
+        if (enabled) {
+            val permissions = arrayOf(
+                Manifest.permission.ACCESS_FINE_LOCATION,
+                Manifest.permission.ACCESS_COARSE_LOCATION
+            )
+            val allGranted = permissions.all {
+                ContextCompat.checkSelfPermission(context, it) == PackageManager.PERMISSION_GRANTED
+            }
+            if (allGranted && activity != null) {
+                scope.launch {
+                    val location = withContext(Dispatchers.IO) {
+                        runCatching {
+                            LocationServices.getFusedLocationProviderClient(activity).getLastLocation().await()
+                        }.getOrNull()
+                    }
+                    viewModel.onEvent(Event.EnableDetectAutomaticallyResult(location))
+                }
+            } else {
+                permissionLauncher.launch(permissions)
+            }
+        } else {
+            viewModel.onEvent(Event.DetectAutomaticallyChanged(false))
+        }
+    }
+
+    LaunchedEffect(viewModel) {
+        viewModel.actions.collect { action ->
+            when (action) {
+                Action.NavigateBack -> onNavigateBack()
+                is Action.ShowToast -> Toast.makeText(context, action.message, Toast.LENGTH_SHORT).show()
+            }
+        }
+    }
+
+    CityScreenScaffold(
+        state = uiState,
+        onEvent = viewModel::onEvent,
+        onDetectAutomaticallyChange = onDetectAutomaticallyChange
     )
 }
+
+@Composable
+internal fun CityScreenScaffold(
+    state: State,
+    onEvent: (Event) -> Unit,
+    onDetectAutomaticallyChange: (Boolean) -> Unit
+) {
+    Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(innerPadding)
+        ) {
+            TopBar(
+                title = stringResource(R.string.title_city),
+                onBackClick = { onEvent(Event.BackClicked) }
+            )
+            if (state.isLoading) {
+                Box(
+                    modifier = Modifier.fillMaxSize(),
+                    contentAlignment = Alignment.Center
+                ) {
+                    CircularProgressIndicator()
+                }
+            } else {
+                CityScreenContent(
+                    uiState = state,
+                    onEvent = onEvent,
+                    onDetectAutomaticallyChange = onDetectAutomaticallyChange
+                )
+            }
+        }
+    }
+}
+
+@Composable
+private fun TopBar(
+    title: String,
+    onBackClick: () -> Unit
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(56.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        IconButton(onClick = onBackClick) {
+            Icon(
+                painter = painterResource(R.drawable.ic_arrow_back),
+                contentDescription = stringResource(R.string.content_back)
+            )
+        }
+        Text(
+            text = title,
+            modifier = Modifier
+                .weight(1f)
+                .padding(end = 48.dp),
+            fontSize = 24.sp
+        )
+    }
+}
+
+@Composable
+private fun CityScreenContent(
+    uiState: State,
+    onEvent: (Event) -> Unit,
+    onDetectAutomaticallyChange: (Boolean) -> Unit
+) {
+    val expandedRegions = remember { mutableStateMapOf<Int, Boolean>() }
+
+    Column(modifier = Modifier.fillMaxSize()) {
+        WarningRow()
+        DetectAutomaticallyRow(
+            enabled = uiState.detectAutomatically,
+            onCheckedChange = onDetectAutomaticallyChange
+        )
+        if (uiState.hasOnlyDefaultCity) {
+            Box(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(36.dp),
+                contentAlignment = Alignment.Center
+            ) {
+                Text(
+                    text = uiState.selectedCity,
+                    fontSize = 16.sp,
+                    color = Color(0xFF6B6B6B)
+                )
+            }
+        } else {
+            LazyColumn(
+                modifier = Modifier.fillMaxSize(),
+                verticalArrangement = Arrangement.spacedBy(0.dp)
+            ) {
+                uiState.regions.forEachIndexed { index, region ->
+                    val isExpanded = expandedRegions.getOrDefault(index, false)
+                    item(key = "region_$index") {
+                        RegionRow(
+                            countryName = region.countryName,
+                            isExpanded = isExpanded,
+                            onClick = {
+                                expandedRegions[index] = !isExpanded
+                            }
+                        )
+                    }
+                    if (isExpanded) {
+                        region.cities.forEach { city ->
+                            item(key = "city_${city.id}") {
+                                CityRow(
+                                    city = city,
+                                    localeLanguage = uiState.localeLanguage,
+                                    onClick = { onEvent(Event.CitySelected(city)) }
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun WarningRow() {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Icon(
+            painter = painterResource(R.drawable.ic_warning),
+            contentDescription = null,
+            modifier = Modifier.size(36.dp),
+            tint = Color(0x99333333)
+        )
+        Text(
+            text = stringResource(R.string.text_city_warning),
+            modifier = Modifier.padding(start = 16.dp),
+            fontSize = 14.sp,
+            color = Color(0x99333333)
+        )
+    }
+    Box(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(1.dp)
+            .background(Color(0x1F000000))
+    )
+}
+
+@Composable
+private fun DetectAutomaticallyRow(
+    enabled: Boolean,
+    onCheckedChange: (Boolean) -> Unit
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(56.dp)
+            .padding(16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Text(
+            text = stringResource(R.string.text_detect_automatically),
+            modifier = Modifier.weight(1f),
+            fontSize = 14.sp,
+            color = Color(0xFF222222)
+        )
+        Switch(
+            checked = enabled,
+            onCheckedChange = onCheckedChange
+        )
+    }
+    Box(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(1.dp)
+            .background(Color(0x1F000000))
+    )
+}
+
+@Composable
+private fun RegionRow(
+    countryName: String,
+    isExpanded: Boolean,
+    onClick: () -> Unit
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(48.dp)
+            .clickable(onClick = onClick)
+            .padding(horizontal = 16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Icon(
+            painter = painterResource(R.drawable.ic_arrow_down_dark),
+            contentDescription = null,
+            modifier = Modifier
+                .size(24.dp)
+                .then(if (isExpanded) Modifier.rotate(180f) else Modifier),
+            tint = Color(0xFF1F5DA5)
+        )
+        Text(
+            text = countryName,
+            modifier = Modifier.padding(start = 16.dp),
+            fontSize = 14.sp,
+            color = Color(0xFF1F5DA5)
+        )
+    }
+}
+
+@Composable
+private fun CityRow(
+    city: City,
+    localeLanguage: String,
+    onClick: () -> Unit
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(48.dp)
+            .clickable(onClick = onClick)
+            .padding(horizontal = 16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Text(
+            text = city.getLocalizedName(localeLanguage),
+            modifier = Modifier.weight(1f),
+            fontSize = 16.sp,
+            color = Color(0xFF222222)
+        )
+        Text(
+            text = "${city.locationCount ?: "—"} x ",
+            fontSize = 12.sp,
+            color = Color(0x99333333)
+        )
+        Icon(
+            painter = painterResource(R.drawable.ic_device_basic_active_10),
+            contentDescription = null,
+            modifier = Modifier.size(24.dp),
+            tint = Color(0x99333333)
+        )
+    }
+}
+
+@Preview(showBackground = true, name = "City – list")
+@Composable
+private fun PreviewCityList() {
+    AirMQTheme {
+        CityScreenScaffold(
+            state = CityScreenContract.previewState(),
+            onEvent = {},
+            onDetectAutomaticallyChange = {}
+        )
+    }
+}
+
+@Preview(showBackground = true, name = "City – loading")
+@Composable
+private fun PreviewCityLoading() {
+    AirMQTheme {
+        CityScreenScaffold(
+            state = CityScreenContract.previewState(isLoading = true),
+            onEvent = {},
+            onDetectAutomaticallyChange = {}
+        )
+    }
+}
+
+@Preview(showBackground = true, name = "City – default only")
+@Composable
+private fun PreviewCityDefaultOnly() {
+    AirMQTheme {
+        CityScreenScaffold(
+            state = CityScreenContract.previewState(
+                regions = emptyList(),
+                hasOnlyDefaultCity = true,
+                selectedCity = "Minsk"
+            ),
+            onEvent = {},
+            onDetectAutomaticallyChange = {}
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/city/CityScreenContract.kt

@@ -0,0 +1,62 @@
+package org.db3.airmq.features.city
+
+import android.location.Location
+import org.db3.airmq.sdk.city.domain.City
+import org.db3.airmq.sdk.city.domain.Region
+
+object CityScreenContract {
+
+    data class State(
+        val regions: List<Region> = emptyList(),
+        val selectedCity: String = "",
+        val isLoading: Boolean = true,
+        val hasOnlyDefaultCity: Boolean = false,
+        val localeLanguage: String = "en",
+        val detectAutomatically: Boolean = false
+    )
+
+    fun previewState(
+        regions: List<Region> = listOf(
+            Region(
+                countryName = "Belarus",
+                countryCode = "BY",
+                cities = listOf(
+                    City("minsk", "BY", "Minsk", "Мінск", "Минск", 53.9, 27.5, 12),
+                    City("gomel", "BY", "Gomel", "Гомель", "Гомель", 52.4, 31.0, 5)
+                )
+            ),
+            Region(
+                countryName = "Russia",
+                countryCode = "RU",
+                cities = listOf(
+                    City("moscow", "RU", "Moscow", null, "Москва", 55.7, 37.6, 45)
+                )
+            )
+        ),
+        selectedCity: String = "Minsk",
+        isLoading: Boolean = false,
+        hasOnlyDefaultCity: Boolean = false,
+        localeLanguage: String = "en",
+        detectAutomatically: Boolean = false
+    ): State = State(
+        regions = regions,
+        selectedCity = selectedCity,
+        isLoading = isLoading,
+        hasOnlyDefaultCity = hasOnlyDefaultCity,
+        localeLanguage = localeLanguage,
+        detectAutomatically = detectAutomatically
+    )
+
+    sealed interface Action {
+        data object NavigateBack : Action
+        data class ShowToast(val message: String) : Action
+    }
+
+    sealed interface Event {
+        data object BackClicked : Event
+        data class CitySelected(val city: City) : Event
+        data class DetectAutomaticallyChanged(val enabled: Boolean) : Event
+        /** Called when permission flow completes for enabling auto-detect. Location is null if denied or unavailable. */
+        data class EnableDetectAutomaticallyResult(val location: Location?) : Event
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/city/CityViewModel.kt

@@ -0,0 +1,110 @@
+package org.db3.airmq.features.city
+
+import android.content.Context
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import android.location.Location
+import org.db3.airmq.R
+import org.db3.airmq.sdk.city.CityService
+import org.db3.airmq.sdk.city.domain.Region
+import java.util.Locale
+import javax.inject.Inject
+
+@HiltViewModel
+class CityViewModel @Inject constructor(
+    @ApplicationContext private val appContext: Context,
+    private val cityService: CityService
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(CityScreenContract.State())
+    val uiState: StateFlow<CityScreenContract.State> = _uiState.asStateFlow()
+
+    private val _actions = MutableSharedFlow<CityScreenContract.Action>(extraBufferCapacity = 1)
+    val actions: SharedFlow<CityScreenContract.Action> = _actions.asSharedFlow()
+
+    init {
+        loadCities()
+    }
+
+    fun onEvent(event: CityScreenContract.Event) {
+        when (event) {
+            CityScreenContract.Event.BackClicked -> _actions.tryEmit(CityScreenContract.Action.NavigateBack)
+            is CityScreenContract.Event.CitySelected -> selectCity(event.city)
+            is CityScreenContract.Event.DetectAutomaticallyChanged -> {
+                if (event.enabled) return // Handled via EnableDetectAutomaticallyResult after permission flow
+                setDetectAutomatically(false)
+            }
+            is CityScreenContract.Event.EnableDetectAutomaticallyResult -> enableDetectAutomaticallyWithLocation(event.location)
+        }
+    }
+
+    private fun loadCities() {
+        viewModelScope.launch(Dispatchers.IO) {
+            val localeLanguage = Locale.getDefault().language
+            cityService.syncCitiesFromRemote(localeLanguage)
+            val regions = cityService.getCitiesGroupedByCountry(localeLanguage)
+            val selectedCity = cityService.getSelectedCity()
+            val hasOnlyDefaultCity = regions.isEmpty()
+            val detectAutomatically = cityService.getDetectAutomatically()
+
+            _uiState.value = _uiState.value.copy(
+                regions = regions,
+                selectedCity = selectedCity,
+                isLoading = false,
+                hasOnlyDefaultCity = hasOnlyDefaultCity,
+                detectAutomatically = detectAutomatically,
+                localeLanguage = localeLanguage
+            )
+
+            if (hasOnlyDefaultCity) {
+                _actions.tryEmit(
+                    CityScreenContract.Action.ShowToast(
+                        appContext.getString(R.string.city_list_unavailable)
+                    )
+                )
+            }
+        }
+    }
+
+    private fun selectCity(city: org.db3.airmq.sdk.city.domain.City) {
+        viewModelScope.launch(Dispatchers.IO) {
+            cityService.setSelectedCity(city.id)
+            _actions.tryEmit(CityScreenContract.Action.NavigateBack)
+        }
+    }
+
+    private fun setDetectAutomatically(enabled: Boolean) {
+        viewModelScope.launch(Dispatchers.IO) {
+            cityService.setDetectAutomatically(enabled)
+            _uiState.value = _uiState.value.copy(detectAutomatically = enabled)
+        }
+    }
+
+    private fun enableDetectAutomaticallyWithLocation(location: Location?) {
+        viewModelScope.launch(Dispatchers.IO) {
+            if (location != null) {
+                cityService.refreshCityFromLocation(location)
+                cityService.setDetectAutomatically(true)
+                val selectedCity = cityService.getSelectedCity()
+                _uiState.value = _uiState.value.copy(
+                    detectAutomatically = true,
+                    selectedCity = selectedCity
+                )
+            } else {
+                _actions.tryEmit(
+                    CityScreenContract.Action.ShowToast(appContext.getString(R.string.toast_error))
+                )
+            }
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/common/AirMQButtons.kt

@@ -0,0 +1,462 @@
+package org.db3.airmq.features.common
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.interaction.collectIsPressedAsState
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.BorderStroke
+import androidx.compose.material3.Button
+import androidx.compose.material3.ButtonDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.OutlinedButton
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import org.db3.airmq.R
+import org.db3.airmq.ui.theme.AirMQTheme
+import org.db3.airmq.ui.theme.LegacyButtonContained
+import org.db3.airmq.ui.theme.LegacyButtonGradientEnd
+import org.db3.airmq.ui.theme.LegacyButtonGradientStart
+import org.db3.airmq.ui.theme.LegacyButtonOnContained
+import org.db3.airmq.ui.theme.LegacyButtonOnOutlined
+import org.db3.airmq.ui.theme.LegacyButtonOnText
+import org.db3.airmq.ui.theme.LegacyOutlineLight
+
+enum class AirMQButtonStyle {
+    Contained,
+    Outlined,
+    Text,
+    Gradient
+}
+
+private val LegacyButtonShape = RoundedCornerShape(18.dp)
+private val LegacyButtonHeight = 36.dp
+private val LegacyDisabledContainer = Color(0xFFE0E0E0)
+private val LegacyDisabledContent = Color(0x61000000)
+
+@Composable
+fun AirMQButton(
+    text: String,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    style: AirMQButtonStyle = AirMQButtonStyle.Contained,
+    leadingIconRes: Int? = null
+) {
+    when (style) {
+        AirMQButtonStyle.Contained -> AirMQContainedButton(
+            text = text,
+            onClick = onClick,
+            modifier = modifier,
+            enabled = enabled,
+            leadingIconRes = leadingIconRes
+        )
+        AirMQButtonStyle.Outlined -> AirMQOutlinedButton(
+            text = text,
+            onClick = onClick,
+            modifier = modifier,
+            enabled = enabled,
+            leadingIconRes = leadingIconRes
+        )
+        AirMQButtonStyle.Text -> AirMQTextButton(
+            text = text,
+            onClick = onClick,
+            modifier = modifier,
+            enabled = enabled,
+            leadingIconRes = leadingIconRes
+        )
+        AirMQButtonStyle.Gradient -> AirMQGradientButton(
+            text = text,
+            onClick = onClick,
+            modifier = modifier,
+            enabled = enabled,
+            leadingIconRes = leadingIconRes
+        )
+    }
+}
+
+@Composable
+fun AirMQSocialButton(
+    text: String,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    leadingIconRes: Int? = null,
+    iconTint: Color = Color.Unspecified,
+    containerColor: Color = Color.White,
+    contentColor: Color = Color(0xFF202124)
+) {
+    Button(
+        onClick = onClick,
+        enabled = enabled,
+        shape = LegacyButtonShape,
+        modifier = modifier.height(LegacyButtonHeight),
+        colors = ButtonDefaults.buttonColors(
+            containerColor = containerColor,
+            contentColor = contentColor,
+            disabledContainerColor = LegacyDisabledContainer,
+            disabledContentColor = LegacyDisabledContent
+        )
+    ) {
+        AirMQButtonLabel(
+            text = text,
+            leadingIconRes = leadingIconRes,
+            iconTint = if (enabled) iconTint else LegacyDisabledContent,
+            textColor = if (enabled) contentColor else LegacyDisabledContent
+        )
+    }
+}
+
+@Composable
+fun AirMQOutlinedLightButton(
+    text: String,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    leadingIconRes: Int? = null
+) {
+    OutlinedButton(
+        onClick = onClick,
+        enabled = enabled,
+        shape = LegacyButtonShape,
+        border = BorderStroke(
+            width = 1.dp,
+            color = if (enabled) Color.White.copy(alpha = 0.55f) else LegacyDisabledContent
+        ),
+        modifier = modifier.height(LegacyButtonHeight),
+        colors = ButtonDefaults.outlinedButtonColors(
+            contentColor = Color.White,
+            disabledContentColor = LegacyDisabledContent
+        )
+    ) {
+        AirMQButtonLabel(
+            text = text,
+            leadingIconRes = leadingIconRes,
+            iconTint = if (enabled) Color.White else LegacyDisabledContent,
+            textColor = if (enabled) Color.White else LegacyDisabledContent
+        )
+    }
+}
+
+@Composable
+fun AirMQContainedButton(
+    text: String,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    leadingIconRes: Int? = null
+) {
+    Button(
+        onClick = onClick,
+        enabled = enabled,
+        shape = LegacyButtonShape,
+        modifier = modifier.height(LegacyButtonHeight),
+        colors = ButtonDefaults.buttonColors(
+            containerColor = LegacyButtonContained,
+            contentColor = LegacyButtonOnContained,
+            disabledContainerColor = LegacyDisabledContainer,
+            disabledContentColor = LegacyDisabledContent
+        )
+    ) {
+        AirMQButtonLabel(
+            text = text,
+            leadingIconRes = leadingIconRes,
+            iconTint = if (enabled) LegacyButtonOnContained else LegacyDisabledContent
+        )
+    }
+}
+
+@Composable
+fun AirMQOutlinedButton(
+    text: String,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    leadingIconRes: Int? = null
+) {
+    OutlinedButton(
+        onClick = onClick,
+        enabled = enabled,
+        shape = LegacyButtonShape,
+        border = BorderStroke(
+            width = 1.dp,
+            color = if (enabled) LegacyOutlineLight else LegacyDisabledContent
+        ),
+        modifier = modifier.height(LegacyButtonHeight),
+        colors = ButtonDefaults.outlinedButtonColors(
+            contentColor = LegacyButtonOnOutlined,
+            disabledContentColor = LegacyDisabledContent
+        )
+    ) {
+        AirMQButtonLabel(
+            text = text,
+            leadingIconRes = leadingIconRes,
+            iconTint = if (enabled) LegacyButtonOnOutlined else LegacyDisabledContent
+        )
+    }
+}
+
+@Composable
+fun AirMQTextButton(
+    text: String,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    leadingIconRes: Int? = null
+) {
+    TextButton(
+        onClick = onClick,
+        enabled = enabled,
+        shape = LegacyButtonShape,
+        modifier = modifier.height(LegacyButtonHeight),
+        colors = ButtonDefaults.textButtonColors(
+            contentColor = LegacyButtonOnText,
+            disabledContentColor = LegacyDisabledContent
+        )
+    ) {
+        AirMQButtonLabel(
+            text = text,
+            leadingIconRes = leadingIconRes,
+            iconTint = if (enabled) LegacyButtonOnText else LegacyDisabledContent
+        )
+    }
+}
+
+@Composable
+fun AirMQGradientButton(
+    text: String,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+    enabled: Boolean = true,
+    leadingIconRes: Int? = null
+) {
+    val interactionSource = remember { MutableInteractionSource() }
+    val isPressed by interactionSource.collectIsPressedAsState()
+    val overlay = when {
+        !enabled -> Color.Black.copy(alpha = 0.12f)
+        isPressed -> Color.Black.copy(alpha = 0.2f)
+        else -> Color.Transparent
+    }
+
+    Button(
+        onClick = onClick,
+        enabled = enabled,
+        shape = LegacyButtonShape,
+        interactionSource = interactionSource,
+        modifier = modifier
+            .height(LegacyButtonHeight)
+            .clip(LegacyButtonShape),
+        contentPadding = PaddingValues(0.dp),
+        colors = ButtonDefaults.buttonColors(
+            containerColor = Color.Transparent,
+            contentColor = LegacyButtonOnContained,
+            disabledContainerColor = Color.Transparent,
+            disabledContentColor = LegacyDisabledContent
+        )
+    ) {
+        Box(
+            modifier = Modifier
+                .fillMaxWidth()
+                .height(LegacyButtonHeight)
+                .clip(LegacyButtonShape)
+                .background(
+                    brush = Brush.horizontalGradient(
+                        colors = listOf(LegacyButtonGradientStart, LegacyButtonGradientEnd)
+                    )
+                )
+                .background(overlay),
+            contentAlignment = Alignment.Center
+        ) {
+            AirMQButtonLabel(
+                text = text,
+                leadingIconRes = leadingIconRes,
+                iconTint = if (enabled) LegacyButtonOnContained else LegacyDisabledContent,
+                textColor = if (enabled) LegacyButtonOnContained else LegacyDisabledContent
+            )
+        }
+    }
+}
+
+@Composable
+private fun AirMQButtonLabel(
+    text: String,
+    leadingIconRes: Int?,
+    iconTint: Color,
+    textColor: Color = Color.Unspecified
+) {
+    Row(verticalAlignment = Alignment.CenterVertically) {
+        if (leadingIconRes != null) {
+            Icon(
+                painter = painterResource(id = leadingIconRes),
+                contentDescription = null,
+                tint = iconTint,
+                modifier = Modifier.size(16.dp)
+            )
+            Spacer(modifier = Modifier.width(6.dp))
+        }
+        Text(
+            text = text.uppercase(),
+            fontWeight = FontWeight.Medium,
+            color = textColor,
+            textAlign = TextAlign.Start
+        )
+    }
+}
+
+@Preview(name = "Buttons - All Styles", showBackground = true)
+@Composable
+private fun AirMQButtonsPreviewAllStyles() {
+    AirMQTheme {
+        Column(
+            modifier = Modifier
+                .padding(16.dp)
+                .fillMaxWidth(),
+            verticalArrangement = Arrangement.spacedBy(10.dp)
+        ) {
+            AirMQButton(
+                text = "Contained",
+                onClick = {},
+                style = AirMQButtonStyle.Contained,
+                modifier = Modifier.fillMaxWidth()
+            )
+            AirMQButton(
+                text = "Outlined",
+                onClick = {},
+                style = AirMQButtonStyle.Outlined,
+                modifier = Modifier.fillMaxWidth()
+            )
+            AirMQButton(
+                text = "Text",
+                onClick = {},
+                style = AirMQButtonStyle.Text,
+                modifier = Modifier.fillMaxWidth()
+            )
+            AirMQButton(
+                text = "Gradient",
+                onClick = {},
+                style = AirMQButtonStyle.Gradient,
+                modifier = Modifier.fillMaxWidth()
+            )
+        }
+    }
+}
+
+@Preview(name = "Buttons - Gradient With Icon", showBackground = true)
+@Composable
+private fun AirMQButtonsPreviewGradientWithIcon() {
+    AirMQTheme {
+        Column(
+            modifier = Modifier
+                .padding(16.dp)
+                .fillMaxWidth(),
+            verticalArrangement = Arrangement.spacedBy(10.dp)
+        ) {
+            AirMQButton(
+                text = "Sign In",
+                onClick = {},
+                style = AirMQButtonStyle.Gradient,
+                leadingIconRes = R.drawable.ic_account,
+                modifier = Modifier.fillMaxWidth()
+            )
+            AirMQButton(
+                text = "Sign In",
+                onClick = {},
+                style = AirMQButtonStyle.Gradient,
+                leadingIconRes = R.drawable.ic_account,
+                enabled = false,
+                modifier = Modifier.fillMaxWidth()
+            )
+        }
+    }
+}
+
+@Preview(name = "Buttons - Social", showBackground = true)
+@Composable
+private fun AirMQButtonsPreviewSocial() {
+    AirMQTheme {
+        Column(
+            modifier = Modifier
+                .padding(16.dp)
+                .fillMaxWidth(),
+            verticalArrangement = Arrangement.spacedBy(10.dp)
+        ) {
+            AirMQSocialButton(
+                text = "Sign in with Google",
+                leadingIconRes = R.drawable.ic_google,
+                iconTint = Color.Unspecified,
+                containerColor = Color.White,
+                contentColor = Color(0xFF202124),
+                onClick = {},
+                modifier = Modifier.fillMaxWidth()
+            )
+            AirMQSocialButton(
+                text = "Sign in with email",
+                leadingIconRes = R.drawable.ic_account,
+                iconTint = Color.Unspecified,
+                containerColor = Color.White,
+                contentColor = Color(0xFF202124),
+                onClick = {},
+                modifier = Modifier.fillMaxWidth()
+            )
+            AirMQOutlinedLightButton(
+                text = "Continue anonymously",
+                onClick = {},
+                modifier = Modifier.fillMaxWidth()
+            )
+        }
+    }
+}
+
+@Preview(name = "Buttons - Social Icon Comparison", showBackground = true)
+@Composable
+private fun AirMQButtonsPreviewSocialIconComparison() {
+    AirMQTheme {
+        Column(
+            modifier = Modifier
+                .padding(16.dp)
+                .fillMaxWidth(),
+            verticalArrangement = Arrangement.spacedBy(10.dp)
+        ) {
+            AirMQSocialButton(
+                text = "Sign in with Google",
+                leadingIconRes = R.drawable.ic_google,
+                iconTint = Color.Unspecified,
+                containerColor = Color.White,
+                contentColor = Color(0xFF202124),
+                onClick = {},
+                modifier = Modifier.fillMaxWidth()
+            )
+            AirMQSocialButton(
+                text = "Sign in with Google",
+                leadingIconRes = null,
+                containerColor = Color.White,
+                contentColor = Color(0xFF202124),
+                onClick = {},
+                modifier = Modifier.fillMaxWidth()
+            )
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/common/MockScreenScaffold.kt

@@ -8,7 +8,6 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
-import androidx.compose.material3.Button
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
@@ -18,7 +17,8 @@ import androidx.compose.ui.unit.dp
 
 data class ScreenAction(
     val label: String,
-    val onClick: () -> Unit
+    val onClick: () -> Unit,
+    val style: AirMQButtonStyle = AirMQButtonStyle.Contained
 )
 
 @Composable
@@ -61,9 +61,12 @@ private fun ScreenContent(
         }
         content?.invoke()
         actions.forEach { action ->
-            Button(onClick = action.onClick, modifier = Modifier.fillMaxWidth()) {
-                Text(text = action.label)
-            }
+            AirMQButton(
+                text = action.label,
+                onClick = action.onClick,
+                style = action.style,
+                modifier = Modifier.fillMaxWidth()
+            )
         }
     }
 }

app/src/main/kotlin/org/db3/airmq/features/common/chart/ChartConfig.kt

@@ -0,0 +1,20 @@
+package org.db3.airmq.features.common.chart
+
+import androidx.compose.ui.graphics.Color
+
+data class ChartConfig(
+    val lineColor: Color,
+    val fillColor: Color,
+    val backgroundColor: Color,
+    val labelColor: Color? = null,
+    val bottomLabelColor: Color? = null,
+    val centerLabel: String? = null,
+    val multiLineColors: List<Color>? = null,
+    val roundCorners: Boolean = true,
+    val leftTimeLabel: String = "Yesterday",
+    val rightTimeLabel: String = "Now",
+    val unit: String = ""
+) {
+    val effectiveLabelColor: Color get() = labelColor ?: lineColor
+    val effectiveBottomLabelColor: Color get() = bottomLabelColor ?: labelColor ?: lineColor
+}

app/src/main/kotlin/org/db3/airmq/features/common/chart/ChartData.kt

@@ -0,0 +1,12 @@
+package org.db3.airmq.features.common.chart
+
+/** Single data point for chart */
+data class ChartDataPoint(val timestamp: Long, val value: Float)
+
+/** Single-line or multi-line dataset */
+sealed class ChartDataset {
+    data class Single(val points: List<ChartDataPoint>) : ChartDataset()
+    data class Multi(val lines: List<ChartLine>) : ChartDataset()
+}
+
+data class ChartLine(val label: String, val points: List<ChartDataPoint>)

app/src/main/kotlin/org/db3/airmq/features/common/chart/ChartDataGenerator.kt

@@ -0,0 +1,54 @@
+package org.db3.airmq.features.common.chart
+
+import kotlin.math.PI
+import kotlin.math.sin
+
+/**
+ * Generates sine wave data for chart previews and testing.
+ *
+ * @param count Number of data points to generate
+ * @param amplitude Amplitude of the sine wave
+ * @param offset Base value (vertical offset)
+ * @param periodCount Number of full periods across the dataset
+ * @return List of ChartDataPoint with timestamps spread over last 24 hours
+ */
+fun generateSineWaveData(
+    count: Int = 24,
+    amplitude: Float = 5f,
+    offset: Float = 20f,
+    periodCount: Float = 2f
+): List<ChartDataPoint> {
+    val now = System.currentTimeMillis()
+    val msPerDay = 24 * 60 * 60 * 1000L
+    val step = msPerDay / count.toLong()
+    return (0 until count).map { i ->
+        val timestamp = now - msPerDay + (i * step)
+        val value = offset + amplitude * sin(2 * PI * periodCount * i / count).toFloat()
+        ChartDataPoint(timestamp = timestamp, value = value)
+    }
+}
+
+/**
+ * Generates multiline dust data (PM1, PM2.5, PM10) for chart previews.
+ * Uses distinct amplitudes/offsets so each line is clearly visible.
+ */
+fun generateMultiLineDustData(count: Int = 24): List<ChartLine> {
+    val basePoints = generateSineWaveData(count = count, amplitude = 8f, offset = 15f, periodCount = 1.5f)
+    return listOf(
+        ChartLine("PM 10", basePoints.map { ChartDataPoint(it.timestamp, it.value + 10f) }),
+        ChartLine("PM 2.5", basePoints.map { ChartDataPoint(it.timestamp, it.value - 2f) }),
+        ChartLine("PM 1", basePoints.map { ChartDataPoint(it.timestamp, it.value - 12f) })
+    )
+}
+
+/**
+ * Generates exactly 2 points - used to verify empty state threshold (no data when < 3).
+ */
+fun generateTwoPointsData(): List<ChartDataPoint> {
+    val now = System.currentTimeMillis()
+    val msPerDay = 24 * 60 * 60 * 1000L
+    return listOf(
+        ChartDataPoint(now - msPerDay, 18f),
+        ChartDataPoint(now, 22f)
+    )
+}

app/src/main/kotlin/org/db3/airmq/features/common/chart/ChartUtils.kt

@@ -0,0 +1,46 @@
+package org.db3.airmq.features.common.chart
+
+/**
+ * Returns display unit for sensor type (legacy Chart.getUnits mapping).
+ */
+fun getUnitsForSensor(sensorType: String): String = when (sensorType) {
+    "sensor_temperature" -> "°C"
+    "sensor_humidity" -> "%"
+    "sensor_pressure" -> "mmHg"
+    "sensor_dust" -> "µg/m³"
+    "sensor_radioactivity" -> "μSv/h"
+    else -> ""
+}
+
+internal fun getPlaces(value: Float, rangeY: Float): Int = when {
+    value >= 1000 -> 0
+    value >= 100 -> if (rangeY > 5) 0 else 1
+    value >= 10 -> when {
+        rangeY >= 5 -> 0
+        rangeY >= 1 -> 1
+        else -> 2
+    }
+    else -> when {
+        rangeY >= 5 -> 0
+        rangeY >= 1 -> 2
+        else -> 3
+    }
+}
+
+internal fun formatRounded(f: Float, range: Float): String {
+    val places = getPlaces(f, range)
+    val rounded = roundToPlaces(f.toDouble(), places)
+    val str = rounded.toString()
+    return if (places == 0) str.replace(".0", "") else str
+}
+
+private fun roundToPlaces(value: Double, places: Int): Float {
+    if (places == 0) {
+        val c = (value + 0.5).toInt()
+        val n = value + 0.5
+        return if ((n - c).toLong() % 2 == 0L) value.toInt().toFloat() else c.toFloat()
+    }
+    var factor = 1.0
+    repeat(places) { factor *= 10 }
+    return (kotlin.math.ceil(value * factor) / factor).toFloat()
+}

app/src/main/kotlin/org/db3/airmq/features/common/metric/MetricGauge.kt

@@ -0,0 +1,473 @@
+package org.db3.airmq.features.common.metric
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.interaction.MutableInteractionSource
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.offset
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.widthIn
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Icon
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.rememberPagerState
+import org.db3.airmq.features.common.metric.getColorFromMetrics
+import org.db3.airmq.features.common.metric.getSensorIconRes
+import org.db3.airmq.ui.theme.AirMQTheme
+import org.db3.airmq.ui.theme.LegacyNavGradientEnd
+import org.db3.airmq.ui.theme.LegacyNavGradientStart
+
+/**
+ * Single metric gauge with ring, value, units, and icon.
+ * Mirrors legacy [RoundedDiagram] layout and behavior.
+ *
+ * @param value Current value; null shows "?"
+ * @param sensorType Sensor type for icon, units, and progress logic
+ * @param selected When true, shows frosted background
+ * @param onClick Called when gauge is tapped
+ * @param modifier Modifier
+ */
+@Composable
+fun MetricGauge(
+    value: Float?,
+    sensorType: SensorType,
+    selected: Boolean,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    val (progress, progressColor) = when (sensorType) {
+        SensorType.HUMIDITY -> {
+            val p = value?.coerceIn(0f, 100f) ?: 0f
+            p to Color.White
+        }
+        SensorType.DUST -> {
+            val p = value?.coerceIn(0f, 100f) ?: 0f
+            val color = value?.let { getColorFromMetrics(it, sensorType) } ?: Color.White
+            p to color
+        }
+        else -> 0f to Color.White
+    }
+
+    val valueText = when {
+        value == null -> "?"
+        sensorType == SensorType.RADIOACTIVITY -> "%.2f".format(value)
+        else -> kotlin.math.round(value).toInt().toString()
+    }
+
+    Box(
+        modifier = modifier
+            .widthIn(min = 96.dp)
+            .padding(horizontal = 4.dp)
+            .clickable(
+                interactionSource = remember { MutableInteractionSource() },
+                indication = null
+            ) { onClick() }
+    ) {
+        if (selected) {
+            Box(
+                modifier = Modifier
+                    .matchParentSize()
+                    .clip(RoundedCornerShape(18.dp))
+                    .background(Color.White.copy(alpha = 0.1f))
+            )
+        }
+        Box(
+            modifier = Modifier
+                .align(Alignment.Center)
+                .padding(vertical = 8.dp),
+            contentAlignment = Alignment.Center
+        ) {
+            RingGauge(
+                progress = progress,
+                progressColor = progressColor,
+                modifier = Modifier.size(77.dp)
+            )
+            Column(
+                modifier = Modifier.align(Alignment.Center),
+                horizontalAlignment = Alignment.CenterHorizontally
+            ) {
+                Text(
+                    text = valueText,
+                    color = Color.White,
+                    fontSize = 16.sp,
+                    fontWeight = FontWeight.Medium
+                )
+                Text(
+                    text = sensorType.units(),
+                    color = Color.White.copy(alpha = 0.54f),
+                    fontSize = 12.sp,
+                    fontWeight = FontWeight.Medium
+                )
+            }
+            Icon(
+                painter = painterResource(id = getSensorIconRes(sensorType)),
+                contentDescription = null,
+                modifier = Modifier
+                    .align(Alignment.Center)
+                    .offset(y = 38.dp)
+                    .size(24.dp),
+                tint = Color.White
+            )
+        }
+    }
+}
+
+/** Page 1: dust, radioactivity, temperature. */
+private val Page1Sensors = listOf(
+    SensorType.DUST,
+    SensorType.RADIOACTIVITY,
+    SensorType.TEMPERATURE
+)
+
+/** Page 2: humidity, pressure. */
+private val Page2Sensors = listOf(
+    SensorType.HUMIDITY,
+    SensorType.PRESSURE
+)
+
+/** @deprecated Use MetricGaugePager. Kept for backward compatibility. */
+@Composable
+fun MetricGaugeRow(
+    selectedSensor: SensorType?,
+    values: Map<SensorType, Float?>,
+    onGaugeSelected: (SensorType) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Row(
+        modifier = modifier,
+        horizontalArrangement = Arrangement.SpaceEvenly
+    ) {
+        for (sensorType in Page1Sensors) {
+            MetricGauge(
+                value = values[sensorType],
+                sensorType = sensorType,
+                selected = selectedSensor == sensorType,
+                onClick = { onGaugeSelected(sensorType) }
+            )
+        }
+    }
+}
+
+/**
+ * Paged metric gauges: 2 pages, 5 gauges total.
+ * Page 0: dust, radioactivity, temperature.
+ * Page 1: humidity, pressure.
+ *
+ * @param selectedSensor Currently selected sensor
+ * @param values Map of sensor type to value
+ * @param currentPage Current page index (0 or 1)
+ * @param onGaugeSelected Called when a gauge is tapped
+ * @param onPageChanged Called when page changes (e.g. after swipe)
+ * @param modifier Modifier
+ */
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+fun MetricGaugePager(
+    selectedSensor: SensorType,
+    values: Map<SensorType, Float?>,
+    currentPage: Int,
+    onGaugeSelected: (SensorType) -> Unit,
+    onPageChanged: (Int) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    val pagerState = rememberPagerState(pageCount = { 2 })
+    LaunchedEffect(currentPage) {
+        if (pagerState.currentPage != currentPage) {
+            pagerState.animateScrollToPage(currentPage)
+        }
+    }
+    LaunchedEffect(pagerState.currentPage) {
+        onPageChanged(pagerState.currentPage)
+    }
+    Column(modifier = modifier) {
+        HorizontalPager(
+            state = pagerState,
+            modifier = Modifier.height(132.dp),
+            userScrollEnabled = true
+        ) { page ->
+            val sensors = if (page == 0) Page1Sensors else Page2Sensors
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 16.dp),
+                horizontalArrangement = Arrangement.SpaceEvenly
+            ) {
+                for (sensorType in sensors) {
+                    MetricGauge(
+                        value = values[sensorType],
+                        sensorType = sensorType,
+                        selected = selectedSensor == sensorType,
+                        onClick = { onGaugeSelected(sensorType) }
+                    )
+                }
+            }
+        }
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(top = 4.dp, bottom = 12.dp),
+            horizontalArrangement = Arrangement.Center,
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            PageIndicatorDot(selected = pagerState.currentPage == 0)
+            Spacer(modifier = Modifier.width(8.dp))
+            PageIndicatorDot(selected = pagerState.currentPage == 1)
+        }
+    }
+}
+
+@Composable
+private fun PageIndicatorDot(
+    selected: Boolean,
+    modifier: Modifier = Modifier
+) {
+    Box(
+        modifier = modifier
+            .size(8.dp)
+            .clip(CircleShape)
+            .background(
+                if (selected) Color.White
+                else Color.White.copy(alpha = 0.38f)
+            )
+    )
+}
+
+@Preview(showBackground = true, name = "Dust – value 6")
+@Composable
+private fun PreviewMetricGaugeDust() {
+    AirMQTheme {
+        Box(
+            modifier = Modifier
+                .background(
+                    androidx.compose.ui.graphics.Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .padding(16.dp)
+        ) {
+            MetricGauge(
+                value = 6f,
+                sensorType = SensorType.DUST,
+                selected = false,
+                onClick = {}
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "Radiation – value 0")
+@Composable
+private fun PreviewMetricGaugeRadiation() {
+    AirMQTheme {
+        Box(
+            modifier = Modifier
+                .background(
+                    androidx.compose.ui.graphics.Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .padding(16.dp)
+        ) {
+            MetricGauge(
+                value = 0f,
+                sensorType = SensorType.RADIOACTIVITY,
+                selected = false,
+                onClick = {}
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "Temperature – value 3")
+@Composable
+private fun PreviewMetricGaugeTemperature() {
+    AirMQTheme {
+        Box(
+            modifier = Modifier
+                .background(
+                    androidx.compose.ui.graphics.Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .padding(16.dp)
+        ) {
+            MetricGauge(
+                value = 3f,
+                sensorType = SensorType.TEMPERATURE,
+                selected = false,
+                onClick = {}
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "Humidity – value 65")
+@Composable
+private fun PreviewMetricGaugeHumidity() {
+    AirMQTheme {
+        Box(
+            modifier = Modifier
+                .background(
+                    androidx.compose.ui.graphics.Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .padding(16.dp)
+        ) {
+            MetricGauge(
+                value = 65f,
+                sensorType = SensorType.HUMIDITY,
+                selected = false,
+                onClick = {}
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "No data")
+@Composable
+private fun PreviewMetricGaugeNoData() {
+    AirMQTheme {
+        Box(
+            modifier = Modifier
+                .background(
+                    androidx.compose.ui.graphics.Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .padding(16.dp)
+        ) {
+            MetricGauge(
+                value = null,
+                sensorType = SensorType.DUST,
+                selected = false,
+                onClick = {}
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "Selected")
+@Composable
+private fun PreviewMetricGaugeSelected() {
+    AirMQTheme {
+        Box(
+            modifier = Modifier
+                .background(
+                    androidx.compose.ui.graphics.Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .padding(16.dp)
+        ) {
+            MetricGauge(
+                value = 6f,
+                sensorType = SensorType.DUST,
+                selected = true,
+                onClick = {}
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "Gauge pager – page 1")
+@Composable
+private fun PreviewMetricGaugePager() {
+    AirMQTheme {
+        Box(
+            modifier = Modifier
+                .background(
+                    androidx.compose.ui.graphics.Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .padding(16.dp)
+        ) {
+            MetricGaugePager(
+                selectedSensor = SensorType.DUST,
+                values = mapOf(
+                    SensorType.DUST to 6f,
+                    SensorType.RADIOACTIVITY to 0f,
+                    SensorType.TEMPERATURE to 3f,
+                    SensorType.HUMIDITY to 65f,
+                    SensorType.PRESSURE to 745f
+                ),
+                currentPage = 0,
+                onGaugeSelected = {},
+                onPageChanged = {}
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "Gauge row")
+@Composable
+private fun PreviewMetricGaugeRow() {
+    AirMQTheme {
+        Box(
+            modifier = Modifier
+                .background(
+                    androidx.compose.ui.graphics.Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .padding(16.dp)
+        ) {
+            MetricGaugeRow(
+                selectedSensor = SensorType.DUST,
+                values = mapOf(
+                    SensorType.DUST to 6f,
+                    SensorType.RADIOACTIVITY to 0f,
+                    SensorType.TEMPERATURE to 3f
+                ),
+                onGaugeSelected = {}
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "Dust orange band")
+@Composable
+private fun PreviewMetricGaugeDustOrange() {
+    AirMQTheme {
+        Box(
+            modifier = Modifier
+                .background(
+                    androidx.compose.ui.graphics.Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .padding(16.dp)
+        ) {
+            MetricGauge(
+                value = 40f,
+                sensorType = SensorType.DUST,
+                selected = false,
+                onClick = {}
+            )
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/common/metric/MetricGaugeContract.kt

@@ -0,0 +1,54 @@
+package org.db3.airmq.features.common.metric
+
+import androidx.compose.ui.graphics.Color
+import org.db3.airmq.R
+import org.db3.airmq.features.common.chart.getUnitsForSensor
+import org.db3.airmq.ui.theme.SensorGreen
+import org.db3.airmq.ui.theme.SensorOrange
+import org.db3.airmq.ui.theme.SensorPink
+import org.db3.airmq.ui.theme.SensorPurple
+import org.db3.airmq.ui.theme.SensorRed
+import org.db3.airmq.ui.theme.SensorYellow
+
+/**
+ * Sensor types supported by the metric gauge.
+ * Maps to legacy Chart sensor constants.
+ */
+enum class SensorType(val legacyKey: String) {
+    DUST("sensor_dust"),
+    RADIOACTIVITY("sensor_radioactivity"),
+    TEMPERATURE("sensor_temperature"),
+    HUMIDITY("sensor_humidity"),
+    PRESSURE("sensor_pressure"),
+    CO2("sensor_co2"),
+    VOC("sensor_voc");
+
+    fun units(): String = getUnitsForSensor(legacyKey)
+}
+
+/**
+ * AQI color bands for dust (PM2.5 µg/m³) per EPA scale.
+ * Returns progress ring color based on value.
+ */
+fun getColorFromMetrics(value: Float, sensorType: SensorType): Color = when (sensorType) {
+    SensorType.DUST -> when {
+        value <= 12f -> SensorGreen
+        value <= 35.4f -> SensorYellow
+        value <= 55.4f -> SensorOrange
+        value <= 150.4f -> SensorRed
+        value <= 250.4f -> SensorPink
+        else -> SensorPurple
+    }
+    else -> Color.White
+}
+
+/**
+ * Drawable resource ID for the sensor icon.
+ */
+fun getSensorIconRes(sensorType: SensorType): Int = when (sensorType) {
+    SensorType.TEMPERATURE -> R.drawable.ic_temperature
+    SensorType.HUMIDITY -> R.drawable.ic_humidity
+    SensorType.PRESSURE -> R.drawable.ic_pressure
+    SensorType.RADIOACTIVITY -> R.drawable.ic_radiation
+    else -> R.drawable.ic_dust
+}

app/src/main/kotlin/org/db3/airmq/features/common/metric/RingGauge.kt

@@ -0,0 +1,97 @@
+package org.db3.airmq.features.common.metric
+
+import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.StrokeCap
+import androidx.compose.ui.graphics.drawscope.Stroke
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+import org.db3.airmq.ui.theme.SensorGreen
+
+private const val StartAngle = 135f
+private const val FullSweepAngle = 270f
+
+/**
+ * Circular progress gauge drawn as a 270° arc (7 o'clock to 4 o'clock).
+ * Mirrors legacy [RingDiagram] behavior.
+ *
+ * @param progress Progress 0–100, maps to arc sweep
+ * @param progressColor Color of the progress arc
+ * @param modifier Modifier
+ * @param size Total size of the gauge
+ * @param strokeWidth Stroke width of the arc
+ * @param backgroundColor Background ring color (default white38)
+ */
+@Composable
+fun RingGauge(
+    progress: Float,
+    progressColor: Color,
+    modifier: Modifier = Modifier,
+    size: Dp = 77.dp,
+    strokeWidth: Dp = 5.dp,
+    backgroundColor: Color = Color.White.copy(alpha = 0.38f)
+) {
+    val animatedProgress by animateFloatAsState(
+        targetValue = progress.coerceIn(0f, 100f),
+        animationSpec = tween(durationMillis = 400),
+        label = "ring_progress"
+    )
+    val sweepDegrees = (FullSweepAngle / 100f) * animatedProgress
+
+    Canvas(
+        modifier = modifier.size(size)
+    ) {
+        val strokePx = strokeWidth.toPx()
+        val halfStroke = strokePx / 2f
+        val topLeft = Offset(halfStroke, halfStroke)
+        val arcSize = androidx.compose.ui.geometry.Size(size.toPx() - strokePx, size.toPx() - strokePx)
+
+        // Background ring
+        drawArc(
+            color = backgroundColor,
+            startAngle = StartAngle,
+            sweepAngle = FullSweepAngle,
+            useCenter = false,
+            topLeft = topLeft,
+            size = arcSize,
+            style = Stroke(width = strokePx, cap = StrokeCap.Round)
+        )
+        // Progress ring
+        if (sweepDegrees > 0f) {
+            drawArc(
+                color = progressColor,
+                startAngle = StartAngle,
+                sweepAngle = sweepDegrees,
+                useCenter = false,
+                topLeft = topLeft,
+                size = arcSize,
+                style = Stroke(width = strokePx, cap = StrokeCap.Round)
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "RingGauge – 40% progress")
+@Composable
+private fun PreviewRingGauge() {
+    Box(
+        modifier = Modifier
+            .size(100.dp)
+            .padding(12.dp)
+    ) {
+        RingGauge(
+            progress = 40f,
+            progressColor = SensorGreen
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/constructor/ChartConstructorScreen.kt

@@ -1,14 +1,16 @@
 package org.db3.airmq.features.constructor
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
 @Composable
 fun ChartConstructorScreen(onBackToWidgetConstructor: () -> Unit) {
     MockScreenScaffold(
-        title = "Chart Constructor",
-        subtitle = "Mock chart widget constructor variant.",
-        actions = listOf(ScreenAction("Back to Widget Constructor", onBackToWidgetConstructor))
+        title = stringResource(id = R.string.widget_chart_constructor_title),
+        subtitle = stringResource(id = R.string.coming_soon),
+        actions = listOf(ScreenAction(stringResource(id = R.string.back_to_widget_constructor), onBackToWidgetConstructor))
     )
 }

app/src/main/kotlin/org/db3/airmq/features/constructor/MapConstructorScreen.kt

@@ -1,14 +1,16 @@
 package org.db3.airmq.features.constructor
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
 @Composable
 fun MapConstructorScreen(onBackToWidgetConstructor: () -> Unit) {
     MockScreenScaffold(
-        title = "Map Constructor",
-        subtitle = "Mock map widget constructor variant.",
-        actions = listOf(ScreenAction("Back to Widget Constructor", onBackToWidgetConstructor))
+        title = stringResource(id = R.string.widget_map_constructor_title),
+        subtitle = stringResource(id = R.string.coming_soon),
+        actions = listOf(ScreenAction(stringResource(id = R.string.back_to_widget_constructor), onBackToWidgetConstructor))
     )
 }

app/src/main/kotlin/org/db3/airmq/features/constructor/NewsConstructorScreen.kt

@@ -1,14 +1,16 @@
 package org.db3.airmq.features.constructor
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
 @Composable
 fun NewsConstructorScreen(onBackToWidgetConstructor: () -> Unit) {
     MockScreenScaffold(
-        title = "News Constructor",
-        subtitle = "Mock news widget constructor variant.",
-        actions = listOf(ScreenAction("Back to Widget Constructor", onBackToWidgetConstructor))
+        title = stringResource(id = R.string.widget_news_constructor_title),
+        subtitle = stringResource(id = R.string.coming_soon),
+        actions = listOf(ScreenAction(stringResource(id = R.string.back_to_widget_constructor), onBackToWidgetConstructor))
     )
 }

app/src/main/kotlin/org/db3/airmq/features/constructor/SelectMapWidgetLocationScreen.kt

@@ -1,14 +1,16 @@
 package org.db3.airmq.features.constructor
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
 @Composable
 fun SelectMapWidgetLocationScreen(onDone: () -> Unit) {
     MockScreenScaffold(
-        title = "Select Map Widget Location",
-        subtitle = "Mock map location picker for widget.",
-        actions = listOf(ScreenAction("Done", onDone))
+        title = stringResource(id = R.string.widget_select_map_location),
+        subtitle = stringResource(id = R.string.coming_soon),
+        actions = listOf(ScreenAction(stringResource(id = R.string.toast_done), onDone))
     )
 }

app/src/main/kotlin/org/db3/airmq/features/constructor/WidgetConstructorScreen.kt

@@ -1,6 +1,8 @@
 package org.db3.airmq.features.constructor
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
@@ -13,14 +15,14 @@ fun WidgetConstructorScreen(
     onBackToManage: () -> Unit
 ) {
     MockScreenScaffold(
-        title = "Widget Constructor",
-        subtitle = "Select constructor variant.",
+        title = stringResource(id = R.string.title_widget_constructor),
+        subtitle = stringResource(id = R.string.coming_soon),
         actions = listOf(
-            ScreenAction("Select Map Widget Location", onOpenSelectMapWidgetLocation),
-            ScreenAction("Open Map Constructor", onOpenMapConstructor),
-            ScreenAction("Open Chart Constructor", onOpenChartConstructor),
-            ScreenAction("Open News Constructor", onOpenNewsConstructor),
-            ScreenAction("Back to Manage", onBackToManage)
+            ScreenAction(stringResource(id = R.string.widget_select_map_location), onOpenSelectMapWidgetLocation),
+            ScreenAction(stringResource(id = R.string.widget_open_map_constructor), onOpenMapConstructor),
+            ScreenAction(stringResource(id = R.string.widget_open_chart_constructor), onOpenChartConstructor),
+            ScreenAction(stringResource(id = R.string.widget_open_news_constructor), onOpenNewsConstructor),
+            ScreenAction(stringResource(id = R.string.back_to_manage), onBackToManage)
         )
     )
 }

app/src/main/kotlin/org/db3/airmq/features/dashboard/DashboardChartMapper.kt

@@ -0,0 +1,85 @@
+package org.db3.airmq.features.dashboard
+
+import org.db3.airmq.features.common.chart.ChartDataPoint
+import org.db3.airmq.features.common.chart.ChartDataset
+import org.db3.airmq.features.common.chart.ChartLine
+import org.db3.airmq.features.common.metric.SensorType
+import org.db3.airmq.sdk.dashboard.SensorSampleRow
+
+/**
+ * Maps city-average [SensorSampleRow] lists to [ChartDataset] and gauge values for the dashboard.
+ */
+internal object DashboardChartMapper {
+
+    /** Synthetic rows for Compose previews (no network). */
+    fun previewStaticRows(): List<SensorSampleRow> {
+        val now = System.currentTimeMillis()
+        return (0 until 12).map { i ->
+            val t = now - (12 - i) * 3_600_000L
+            SensorSampleRow(
+                epochMillis = t,
+                temp = 15f + i % 5,
+                hum = 50f + i,
+                press = 745f - i * 0.5f,
+                pms1 = 4f + i * 0.2f,
+                pms25 = 8f + i * 0.5f,
+                pms10 = 7f + i * 0.3f,
+                radRg = 0.12f,
+                ppm = null,
+                ikav = null,
+            )
+        }
+    }
+
+    fun chartDataset(rows: List<SensorSampleRow>, sensor: SensorType): ChartDataset {
+        val sorted = rows.sortedBy { it.epochMillis }
+        return when (sensor) {
+            SensorType.DUST -> {
+                val pm10 = sorted.mapNotNull { r ->
+                    r.pms10?.let { ChartDataPoint(r.epochMillis, it) }
+                }
+                val pm25 = sorted.mapNotNull { r ->
+                    r.pms25?.let { ChartDataPoint(r.epochMillis, it) }
+                }
+                val pm1 = sorted.mapNotNull { r ->
+                    r.pms1?.let { ChartDataPoint(r.epochMillis, it) }
+                }
+                ChartDataset.Multi(
+                    listOf(
+                        ChartLine("PM10", pm10),
+                        ChartLine("PM2.5", pm25),
+                        ChartLine("PM1", pm1),
+                    )
+                )
+            }
+            SensorType.TEMPERATURE -> ChartDataset.Single(
+                sorted.mapNotNull { r -> r.temp?.let { ChartDataPoint(r.epochMillis, it) } }
+            )
+            SensorType.HUMIDITY -> ChartDataset.Single(
+                sorted.mapNotNull { r -> r.hum?.let { ChartDataPoint(r.epochMillis, it) } }
+            )
+            SensorType.PRESSURE -> ChartDataset.Single(
+                sorted.mapNotNull { r -> r.press?.let { ChartDataPoint(r.epochMillis, it) } }
+            )
+            SensorType.RADIOACTIVITY -> ChartDataset.Single(
+                sorted.mapNotNull { r ->
+                    (r.radRg ?: r.ppm ?: r.ikav)?.let { ChartDataPoint(r.epochMillis, it) }
+                }
+            )
+            SensorType.CO2, SensorType.VOC -> ChartDataset.Single(emptyList())
+        }
+    }
+
+    fun gaugeValues(last: SensorSampleRow?): Map<SensorType, Float?> {
+        if (last == null) return SensorType.entries.associateWith { null }
+        return mapOf(
+            SensorType.DUST to last.pms25,
+            SensorType.RADIOACTIVITY to (last.radRg ?: last.ppm ?: last.ikav),
+            SensorType.TEMPERATURE to last.temp,
+            SensorType.HUMIDITY to last.hum,
+            SensorType.PRESSURE to last.press,
+            SensorType.CO2 to null,
+            SensorType.VOC to null,
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/dashboard/DashboardScreen.kt

@@ -1,28 +1,183 @@
 package org.db3.airmq.features.dashboard
 
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.ui.draw.clip
+import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import org.db3.airmq.features.common.MockScreenScaffold
-import org.db3.airmq.features.common.ScreenAction
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.hilt.navigation.compose.hiltViewModel
+import org.db3.airmq.R
+import org.db3.airmq.features.common.chart.AirMQChart
+import org.db3.airmq.features.common.metric.MetricGaugePager
+import org.db3.airmq.features.common.metric.SensorType
+import org.db3.airmq.ui.theme.AirMQTheme
+import org.db3.airmq.ui.theme.DashboardCityChipGradientEnd
+import org.db3.airmq.ui.theme.DashboardCityChipGradientStart
+import org.db3.airmq.ui.theme.LegacyNavGradientEnd
+import org.db3.airmq.ui.theme.LegacyNavGradientStart
 
 @Composable
 fun DashboardScreen(
-    onOpenMap: () -> Unit,
-    onOpenManage: () -> Unit,
     onOpenCity: () -> Unit,
     onOpenDevice: () -> Unit,
     onOpenNews: () -> Unit,
-    onOpenWidgetConstructor: () -> Unit
+    onOpenWidgetConstructor: () -> Unit,
+    viewModel: DashboardViewModel = hiltViewModel()
 ) {
-    MockScreenScaffold(
-        title = "Dashboard",
-        subtitle = "Bottom-tab equivalent: dashboard",
-        actions = listOf(
-            ScreenAction("Open Map", onOpenMap),
-            ScreenAction("Open Manage", onOpenManage),
-            ScreenAction("Open City", onOpenCity),
-            ScreenAction("Open Device", onOpenDevice),
-            ScreenAction("Open News", onOpenNews),
-            ScreenAction("Open Widget Constructor", onOpenWidgetConstructor)
-        )
+    val state by viewModel.uiState.collectAsState()
+
+    LaunchedEffect(viewModel) {
+        viewModel.actions.collect { action ->
+            when (action) {
+                DashboardScreenContract.Action.OpenCity -> onOpenCity()
+                DashboardScreenContract.Action.OpenNews -> { /* handled elsewhere */ }
+                DashboardScreenContract.Action.OpenWidgetConstructor -> { /* handled elsewhere */ }
+            }
+        }
+    }
+
+    DashboardContent(
+        state = state,
+        onEvent = viewModel::onEvent
     )
 }
+
+@Composable
+internal fun DashboardContent(
+    state: DashboardScreenContract.State,
+    onEvent: (DashboardScreenContract.Event) -> Unit
+) {
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .verticalScroll(rememberScrollState())
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxWidth()
+                .background(
+                    Brush.verticalGradient(
+                        colors = listOf(LegacyNavGradientStart, LegacyNavGradientEnd)
+                    )
+                )
+                .statusBarsPadding()
+        ) {
+            CitySelector(
+                city = state.city,
+                modifier = Modifier
+                    .padding(top = 12.dp)
+                    .padding(horizontal = 16.dp),
+                onClick = { onEvent(DashboardScreenContract.Event.CitySelectorClicked) }
+            )
+            MetricGaugePager(
+                selectedSensor = state.selectedSensor,
+                values = state.gaugeValues,
+                currentPage = state.currentPage,
+                onGaugeSelected = { onEvent(DashboardScreenContract.Event.GaugeSelected(it)) },
+                onPageChanged = { onEvent(DashboardScreenContract.Event.PageChanged(it)) },
+                modifier = Modifier.fillMaxWidth()
+            )
+            Box(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(144.dp)
+            ) {
+                AirMQChart(
+                    data = state.chartData,
+                    config = state.chartConfig.copy(
+                        leftTimeLabel = stringResource(R.string.text_yesterday),
+                        rightTimeLabel = stringResource(R.string.text_now)
+                    ),
+                    sensorType = state.selectedSensor.legacyKey,
+                    modifier = Modifier.fillMaxSize()
+                )
+            }
+        }
+    }
+}
+
+@Composable
+private fun CitySelector(
+    city: String,
+    modifier: Modifier = Modifier,
+    onClick: () -> Unit = {}
+) {
+    val chipHeight = 44.dp
+    val chipShape = RoundedCornerShape(chipHeight / 2)
+    val chipBrush = Brush.horizontalGradient(
+        colors = listOf(DashboardCityChipGradientStart, DashboardCityChipGradientEnd)
+    )
+    val borderWidth = 2.dp
+    Box(
+        modifier = modifier.fillMaxWidth(),
+        contentAlignment = Alignment.Center
+    ) {
+        Box(
+            modifier = Modifier
+                .height(chipHeight)
+                .border(width = borderWidth, brush = chipBrush, shape = chipShape)
+                .clip(chipShape)
+                .clickable(onClick = onClick),
+            contentAlignment = Alignment.Center
+        ) {
+            Text(
+                text = city,
+                color = Color.White,
+                fontSize = 22.sp,
+                fontWeight = FontWeight.Medium,
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis,
+                modifier = Modifier.padding(horizontal = 14.dp)
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true, name = "Dashboard – dust selected")
+@Composable
+private fun PreviewDashboardDust() {
+    AirMQTheme {
+        DashboardContent(
+            state = DashboardScreenContract.previewState(selectedSensor = SensorType.DUST),
+            onEvent = {}
+        )
+    }
+}
+
+@Preview(showBackground = true, name = "Dashboard – page 2 humidity")
+@Composable
+private fun PreviewDashboardPage2() {
+    AirMQTheme {
+        DashboardContent(
+            state = DashboardScreenContract.previewState(
+                selectedSensor = SensorType.HUMIDITY,
+                currentPage = 1
+            ),
+            onEvent = {}
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/dashboard/DashboardScreenContract.kt

@@ -0,0 +1,90 @@
+package org.db3.airmq.features.dashboard
+
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+import org.db3.airmq.R
+import org.db3.airmq.features.common.chart.ChartConfig
+import org.db3.airmq.features.common.chart.ChartDataset
+import org.db3.airmq.features.common.metric.SensorType
+import org.db3.airmq.ui.theme.ChartBackground
+import org.db3.airmq.ui.theme.ChartFill
+import org.db3.airmq.ui.theme.SensorDust1
+import org.db3.airmq.ui.theme.SensorDust10
+import org.db3.airmq.ui.theme.SensorDust25
+import androidx.compose.ui.graphics.Color
+
+object DashboardScreenContract {
+
+    @Composable
+    fun previewState(
+        city: String = "Minsk",
+        selectedSensor: SensorType = SensorType.DUST,
+        currentPage: Int = 0
+    ): State {
+        val previewRows = DashboardChartMapper.previewStaticRows()
+        val chartData = DashboardChartMapper.chartDataset(previewRows, selectedSensor)
+        val center = LocalContext.current.getString(
+            when (selectedSensor) {
+                SensorType.DUST -> R.string.sensor_dust
+                SensorType.RADIOACTIVITY -> R.string.sensor_radioactivity
+                SensorType.TEMPERATURE -> R.string.sensor_temperature
+                SensorType.HUMIDITY -> R.string.sensor_humidity
+                SensorType.PRESSURE -> R.string.sensor_pressure
+                SensorType.CO2 -> R.string.sensor_co2
+                SensorType.VOC -> R.string.sensor_voc
+            }
+        )
+        val chartConfig = ChartConfig(
+            lineColor = Color.White,
+            fillColor = ChartFill,
+            backgroundColor = ChartBackground,
+            labelColor = Color.White,
+            leftTimeLabel = "Yesterday",
+            rightTimeLabel = "Now",
+            unit = selectedSensor.units(),
+            centerLabel = center,
+            multiLineColors = if (selectedSensor == SensorType.DUST) {
+                listOf(SensorDust10, SensorDust25, SensorDust1)
+            } else {
+                null
+            }
+        )
+        return State(
+            city = city,
+            gaugeValues = mapOf(
+                SensorType.DUST to 6f,
+                SensorType.RADIOACTIVITY to 0f,
+                SensorType.TEMPERATURE to 3f,
+                SensorType.HUMIDITY to 65f,
+                SensorType.PRESSURE to 745f
+            ),
+            selectedSensor = selectedSensor,
+            currentPage = currentPage,
+            chartData = chartData,
+            chartConfig = chartConfig,
+            chartSensorLabel = chartConfig.centerLabel ?: ""
+        )
+    }
+
+    data class State(
+        val city: String,
+        val gaugeValues: Map<SensorType, Float?>,
+        val selectedSensor: SensorType,
+        val currentPage: Int,
+        val chartData: ChartDataset?,
+        val chartConfig: ChartConfig,
+        val chartSensorLabel: String
+    )
+
+    sealed interface Action {
+        data object OpenCity : Action
+        data object OpenNews : Action
+        data object OpenWidgetConstructor : Action
+    }
+
+    sealed interface Event {
+        data object CitySelectorClicked : Event
+        data class GaugeSelected(val sensor: SensorType) : Event
+        data class PageChanged(val page: Int) : Event
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/dashboard/DashboardViewModel.kt

@@ -0,0 +1,158 @@
+package org.db3.airmq.features.dashboard
+
+import android.content.Context
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import org.db3.airmq.R
+import org.db3.airmq.features.common.chart.ChartConfig
+import org.db3.airmq.features.common.chart.ChartDataset
+import org.db3.airmq.features.common.metric.SensorType
+import org.db3.airmq.sdk.auth.ApiTokenStore
+import org.db3.airmq.sdk.city.CityService
+import org.db3.airmq.sdk.city.DashboardCityContext
+import org.db3.airmq.sdk.dashboard.DashboardMetricsRepository
+import org.db3.airmq.sdk.dashboard.SensorSampleRow
+import org.db3.airmq.ui.theme.ChartBackground
+import org.db3.airmq.ui.theme.ChartFill
+import org.db3.airmq.ui.theme.SensorDust1
+import org.db3.airmq.ui.theme.SensorDust10
+import org.db3.airmq.ui.theme.SensorDust25
+import androidx.compose.ui.graphics.Color
+
+@HiltViewModel
+class DashboardViewModel @Inject constructor(
+    @ApplicationContext private val context: Context,
+    private val cityService: CityService,
+    private val apiTokenStore: ApiTokenStore,
+    private val dashboardMetricsRepository: DashboardMetricsRepository,
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(initialState())
+    val uiState: StateFlow<DashboardScreenContract.State> = _uiState.asStateFlow()
+
+    private val _actions = MutableSharedFlow<DashboardScreenContract.Action>(extraBufferCapacity = 1)
+    val actions: SharedFlow<DashboardScreenContract.Action> = _actions.asSharedFlow()
+
+    private var cachedAverageRows: List<SensorSampleRow> = emptyList()
+
+    init {
+        viewModelScope.launch {
+            combine(
+                cityService.observeDashboardCityContext(),
+                apiTokenStore.observeToken(),
+            ) { _, _ -> }
+                .collectLatest {
+                    val ctx = cityService.getResolvedDashboardCityContext()
+                    loadDashboardData(ctx)
+                }
+        }
+    }
+
+    fun onEvent(event: DashboardScreenContract.Event) {
+        when (event) {
+            DashboardScreenContract.Event.CitySelectorClicked -> _actions.tryEmit(DashboardScreenContract.Action.OpenCity)
+            is DashboardScreenContract.Event.GaugeSelected -> {
+                val sensor = event.sensor
+                _uiState.update { state ->
+                    state.copy(
+                        selectedSensor = sensor,
+                        chartData = DashboardChartMapper.chartDataset(cachedAverageRows, sensor),
+                        chartConfig = chartConfigFor(sensor),
+                        chartSensorLabel = chartLabelFor(sensor),
+                    )
+                }
+            }
+            is DashboardScreenContract.Event.PageChanged -> {
+                _uiState.update { it.copy(currentPage = event.page) }
+            }
+        }
+    }
+
+    private fun initialState(): DashboardScreenContract.State {
+        val selected = SensorType.DUST
+        return DashboardScreenContract.State(
+            city = cityService.getDashboardCityDisplayName(),
+            gaugeValues = SensorType.entries.associateWith { null },
+            selectedSensor = selected,
+            currentPage = 0,
+            chartData = ChartDataset.Single(emptyList()),
+            chartConfig = chartConfigFor(selected),
+            chartSensorLabel = chartLabelFor(selected),
+        )
+    }
+
+    private suspend fun loadDashboardData(ctx: DashboardCityContext) {
+        if (apiTokenStore.getToken().isNullOrBlank()) {
+            cachedAverageRows = emptyList()
+            val sensor = _uiState.value.selectedSensor
+            _uiState.update { state ->
+                state.copy(
+                    city = ctx.displayName,
+                    gaugeValues = SensorType.entries.associateWith { null },
+                    chartData = DashboardChartMapper.chartDataset(emptyList(), sensor),
+                    chartConfig = chartConfigFor(sensor),
+                    chartSensorLabel = chartLabelFor(sensor),
+                )
+            }
+            return
+        }
+
+        val result = dashboardMetricsRepository.fetchCityDashboard(ctx)
+        val data = result.getOrNull()
+        cachedAverageRows = data?.averageRows.orEmpty()
+        val sensor = _uiState.value.selectedSensor
+        _uiState.update { state ->
+            state.copy(
+                city = ctx.displayName,
+                gaugeValues = DashboardChartMapper.gaugeValues(data?.lastRow),
+                chartData = DashboardChartMapper.chartDataset(cachedAverageRows, sensor),
+                chartConfig = chartConfigFor(sensor),
+                chartSensorLabel = chartLabelFor(sensor),
+            )
+        }
+    }
+
+    private fun chartConfigFor(sensor: SensorType): ChartConfig {
+        val label = chartLabelFor(sensor)
+        val base = ChartConfig(
+            lineColor = Color.White,
+            fillColor = ChartFill,
+            backgroundColor = ChartBackground,
+            labelColor = Color.White,
+            leftTimeLabel = "Yesterday",
+            rightTimeLabel = "Now",
+            unit = sensor.units(),
+            centerLabel = label,
+        )
+        return if (sensor == SensorType.DUST) {
+            base.copy(multiLineColors = listOf(SensorDust10, SensorDust25, SensorDust1))
+        } else {
+            base
+        }
+    }
+
+    private fun chartLabelFor(sensor: SensorType): String = context.getString(
+        when (sensor) {
+            SensorType.DUST -> R.string.sensor_dust
+            SensorType.RADIOACTIVITY -> R.string.sensor_radioactivity
+            SensorType.TEMPERATURE -> R.string.sensor_temperature
+            SensorType.HUMIDITY -> R.string.sensor_humidity
+            SensorType.PRESSURE -> R.string.sensor_pressure
+            SensorType.CO2 -> R.string.sensor_co2
+            SensorType.VOC -> R.string.sensor_voc
+        }
+    )
+}

app/src/main/kotlin/org/db3/airmq/features/debug/DebugScreen.kt

@@ -1,14 +1,16 @@
 package org.db3.airmq.features.debug
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
 @Composable
 fun DebugScreen(onBackToSettings: () -> Unit) {
     MockScreenScaffold(
-        title = "Debug",
-        subtitle = "Debug-only tools placeholder.",
-        actions = listOf(ScreenAction("Back to Settings", onBackToSettings))
+        title = stringResource(id = R.string.title_debug),
+        subtitle = stringResource(id = R.string.coming_soon),
+        actions = listOf(ScreenAction(stringResource(id = R.string.back_to_settings), onBackToSettings))
     )
 }

app/src/main/kotlin/org/db3/airmq/features/device/DeviceScreen.kt

@@ -1,6 +1,8 @@
 package org.db3.airmq.features.device
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
@@ -11,11 +13,11 @@ fun DeviceScreen(
     onShowOnMap: () -> Unit
 ) {
     MockScreenScaffold(
-        title = "Device",
-        subtitle = "Mock deviceId: $deviceId",
+        title = stringResource(id = R.string.title_device),
+        subtitle = stringResource(id = R.string.coming_soon),
         actions = listOf(
-            ScreenAction("Select Location", onOpenLocation),
-            ScreenAction("Show on Map", onShowOnMap)
+            ScreenAction(stringResource(id = R.string.title_location), onOpenLocation),
+            ScreenAction(stringResource(id = R.string.button_view_on_map), onShowOnMap)
         )
     )
 }

app/src/main/kotlin/org/db3/airmq/features/device/DeviceSettingsScreen.kt

@@ -0,0 +1,732 @@
+package org.db3.airmq.features.device
+
+import android.R as AndroidR
+import android.content.Intent
+import android.net.Uri
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Snackbar
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarHostState
+import androidx.compose.material3.Switch
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.colorResource
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.hilt.navigation.compose.hiltViewModel
+import kotlinx.coroutines.flow.collectLatest
+import org.db3.airmq.R
+import org.db3.airmq.sdk.device.domain.DeviceModel
+import org.db3.airmq.features.common.AirMQButton
+import org.db3.airmq.ui.theme.AirMQTheme
+import org.db3.airmq.features.common.AirMQButtonStyle
+import org.db3.airmq.ui.theme.LegacyBackground
+import org.db3.airmq.ui.theme.LegacyBlack12
+import androidx.core.net.toUri
+
+private const val INFO_URL = "https://docs.google.com/document/d/1JC41nHE5foYhS6beDFTA5a8dQqX3IQoqHJYZbPRtmuM/edit"
+
+private fun roundLocation(d: Double): String =
+    "%.5f".format(d).replace(',', '.')
+
+private fun DeviceModel.iconRes(): Int = when (this) {
+    DeviceModel.Basic -> R.drawable.ic_device_basic_active_10
+    DeviceModel.Mobile -> R.drawable.ic_device_mobile_active_10
+    DeviceModel.Solar -> R.drawable.ic_device_solar_active_10
+    DeviceModel.Radiation -> R.drawable.ic_device_radiation_active_10
+    DeviceModel.Custom -> R.drawable.ic_device_custom_active_10
+}
+
+@Composable
+fun DeviceSettingsScreen(
+    deviceId: String,
+    onOpenLocation: () -> Unit,
+    onShowOnMap: () -> Unit,
+    onNavigateBack: () -> Unit,
+    viewModel: DeviceSettingsViewModel = hiltViewModel(
+        creationCallback = { factory: DeviceSettingsViewModel.Factory ->
+            factory.create(deviceId)
+        }
+    )
+) {
+    val uiState by viewModel.uiState.collectAsState()
+    val snackbarHostState = remember { SnackbarHostState() }
+    val context = LocalContext.current
+
+    LaunchedEffect(viewModel) {
+        viewModel.actions.collectLatest { action ->
+            when (action) {
+                is DeviceSettingsScreenContract.Action.ShowError -> {
+                    snackbarHostState.showSnackbar(action.message)
+                }
+                is DeviceSettingsScreenContract.Action.ShowSuccess -> { /* no snackbar for success */ }
+                is DeviceSettingsScreenContract.Action.OpenLocation -> onOpenLocation()
+                is DeviceSettingsScreenContract.Action.ShowOnMap -> onShowOnMap()
+                is DeviceSettingsScreenContract.Action.OpenInfoUrl -> {
+                    context.startActivity(Intent(Intent.ACTION_VIEW, INFO_URL.toUri()))
+                }
+            }
+        }
+    }
+
+    Scaffold(
+        modifier = Modifier.fillMaxWidth(),
+        topBar = {
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .statusBarsPadding()
+                    .background(LegacyBackground)
+                    .padding(16.dp),
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                IconButton(onClick = onNavigateBack) {
+                    Icon(
+                        painter = painterResource(R.drawable.ic_arrow_back),
+                        contentDescription = stringResource(R.string.content_back)
+                    )
+                }
+                Text(
+                    text = stringResource(R.string.title_device_config),
+                    style = MaterialTheme.typography.titleLarge.copy(
+                        fontSize = 24.sp,
+                        fontWeight = FontWeight.Medium
+                    ),
+                    modifier = Modifier
+                        .weight(1f)
+                        .padding(start = 8.dp),
+                    textAlign = androidx.compose.ui.text.style.TextAlign.Center
+                )
+                Spacer(modifier = Modifier.size(48.dp))
+            }
+        },
+        snackbarHost = {
+            SnackbarHost(
+                hostState = snackbarHostState,
+                snackbar = { data ->
+                    Snackbar(
+                        snackbarData = data,
+                        containerColor = MaterialTheme.colorScheme.inverseSurface,
+                        contentColor = MaterialTheme.colorScheme.inverseOnSurface
+                    )
+                }
+            )
+        }
+    ) { innerPadding ->
+        Box(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(innerPadding)
+        ) {
+            when {
+                uiState.device == null && uiState.isLoading -> {
+                    CircularProgressIndicator(modifier = Modifier.align(Alignment.Center))
+                }
+                uiState.device == null && !uiState.isLoading -> {
+                    Text(
+                        text = stringResource(R.string.text_nothing_to_show),
+                        modifier = Modifier
+                            .align(Alignment.Center)
+                            .padding(16.dp)
+                    )
+                }
+                else -> {
+                    Box(modifier = Modifier.fillMaxWidth()) {
+                        DeviceSettingsContent(
+                            state = uiState,
+                            onEvent = viewModel::onEvent
+                        )
+                        if (uiState.isLoading) {
+                            Box(
+                                modifier = Modifier
+                                    .fillMaxSize()
+                                    .background(Color.Black.copy(alpha = 0.3f)),
+                                contentAlignment = Alignment.Center
+                            ) {
+                                CircularProgressIndicator()
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+private val PreviewHeaderColor = Color(0xFF1F5DA5)
+private val PreviewGreyColor = Color(0x61000000)
+private val PreviewBlack54 = Color(0x8A000000)
+private val PreviewOrange = Color(0xFFFF6F00)
+
+@Composable
+private fun DeviceSettingsContent(
+    state: DeviceSettingsScreenContract.State,
+    onEvent: (DeviceSettingsScreenContract.Event) -> Unit,
+    labelColorOverride: Color? = null,
+    greyColorOverride: Color? = null,
+    iconResOverride: Int? = null
+) {
+    val device = state.device!!
+    var showRenameDialog by remember { mutableStateOf(false) }
+    var showConfigComingSoonDialog by remember { mutableStateOf(false) }
+    var renameText by remember(device.name) { mutableStateOf(device.name) }
+    val headerColor = labelColorOverride ?: colorResource(R.color.headerColor)
+    val onSurfaceVariant = MaterialTheme.colorScheme.onSurfaceVariant
+    val greyColor = greyColorOverride ?: colorResource(R.color.black38)
+
+    if (showRenameDialog) {
+        AlertDialog(
+            onDismissRequest = { showRenameDialog = false },
+            title = { Text(stringResource(R.string.dialog_rename_title)) },
+            text = {
+                Column {
+                    Text(
+                        text = stringResource(R.string.hint_new_name),
+                        style = MaterialTheme.typography.bodySmall
+                    )
+                    BasicTextField(
+                        value = renameText,
+                        onValueChange = { renameText = it },
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .padding(top = 8.dp),
+                        singleLine = true
+                    )
+                }
+            },
+            confirmButton = {
+                androidx.compose.material3.TextButton(
+                    onClick = {
+                        if (renameText.trim().length >= 3) {
+                            onEvent(DeviceSettingsScreenContract.Event.RenameSubmitted(renameText.trim()))
+                            showRenameDialog = false
+                        }
+                    }
+                ) {
+                    Text(stringResource(R.string.button_rename))
+                }
+            },
+            dismissButton = {
+                androidx.compose.material3.TextButton(onClick = { showRenameDialog = false }) {
+                    Text(stringResource(R.string.button_cancel))
+                }
+            }
+        )
+    }
+
+    if (showConfigComingSoonDialog) {
+        AlertDialog(
+            onDismissRequest = { showConfigComingSoonDialog = false },
+            title = { Text(stringResource(R.string.coming_soon)) },
+            text = { Text(stringResource(R.string.coming_soon)) },
+            confirmButton = {
+                androidx.compose.material3.TextButton(onClick = { showConfigComingSoonDialog = false }) {
+                    Text(stringResource(R.string.button_ok))
+                }
+            }
+        )
+    }
+
+    val scrollState = rememberScrollState()
+    val statusIcon = when {
+        state.isConnected -> R.drawable.device_chip_online
+        else -> R.drawable.device_chip_offline
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .verticalScroll(scrollState)
+            .background(LegacyBackground)
+    ) {
+        HorizontalDivider(color = LegacyBlack12)
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .height(72.dp)
+                .padding(horizontal = 16.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Icon(
+                painter = painterResource(
+                    iconResOverride ?: device.model.iconRes()
+                ),
+                contentDescription = null,
+                modifier = Modifier.size(40.dp)
+            )
+            Spacer(modifier = Modifier.size(16.dp))
+            Column(modifier = Modifier.weight(1f)) {
+                Text(
+                    text = device.name,
+                    style = MaterialTheme.typography.bodyLarge.copy(fontSize = 16.sp)
+                )
+                Text(
+                    text = device.model.displayName,
+                    style = MaterialTheme.typography.bodyMedium.copy(fontSize = 14.sp),
+                    color = greyColor
+                )
+            }
+            Text(
+                text = if (state.isConnected) stringResource(R.string.text_device_connected) else "",
+                style = MaterialTheme.typography.labelSmall.copy(fontSize = 11.sp),
+                color = greyColor
+            )
+            if (!state.isConnected) {
+                Icon(
+                    painter = painterResource(statusIcon),
+                    contentDescription = null,
+                    modifier = Modifier.size(24.dp)
+                )
+            }
+        }
+        HorizontalDivider(color = LegacyBlack12)
+
+        ConfigRow(
+            label = stringResource(R.string.text_device_name),
+            value = device.name,
+            onClick = { showRenameDialog = true },
+            trailingIcon = R.drawable.ic_edit,
+            iconTint = (labelColorOverride?.let { PreviewBlack54 } ?: colorResource(R.color.black54)),
+            labelColor = headerColor
+        )
+
+        ConfigRowReadOnly(
+            label = stringResource(R.string.text_device_id),
+            value = device.id,
+            labelColor = headerColor
+        )
+
+        ConfigRowReadOnly(
+            label = stringResource(R.string.text_device_ip),
+            value = device.deviceAddress,
+            labelColor = headerColor
+        )
+
+        ConfigRowWithIndicator(
+            label = stringResource(R.string.text_device_config_version),
+            value = device.configVersion,
+            showIndicator = state.configVersionNeedsUpdate,
+            indicatorColor = labelColorOverride?.let { PreviewOrange } ?: colorResource(R.color.colorOrange),
+            onClick = { if (state.configVersionNeedsUpdate) showConfigComingSoonDialog = true },
+            trailingIcon = if (state.configVersionNeedsUpdate) {
+                R.drawable.ic_upload
+            } else null,
+            iconTint = labelColorOverride?.let { PreviewBlack54 } ?: colorResource(R.color.black54),
+            labelColor = headerColor,
+            indicatorDrawableRes = null
+        )
+
+        ConfigRowReadOnly(
+            label = stringResource(R.string.text_device_wifi),
+            value = state.wifiSsid,
+            labelColor = headerColor
+        )
+
+        HorizontalDivider(color = LegacyBlack12)
+
+        ConfigRowWithIndicator(
+            label = stringResource(R.string.text_device_location),
+            value = if (device.hasLocation()) {
+                stringResource(
+                    R.string.text_device_location_set,
+                    roundLocation(device.latitude!!),
+                    roundLocation(device.longitude!!)
+                )
+            } else {
+                stringResource(R.string.text_device_location_unset)
+            },
+            showIndicator = !device.hasLocation(),
+            indicatorColor = labelColorOverride?.let { PreviewOrange } ?: colorResource(R.color.colorOrange),
+            onClick = { onEvent(DeviceSettingsScreenContract.Event.OpenLocationClicked) },
+            trailingIcon = if (device.hasLocation()) null else R.drawable.ic_edit,
+            iconTint = labelColorOverride?.let { PreviewBlack54 } ?: colorResource(R.color.black54),
+            labelColor = headerColor,
+            indicatorDrawableRes = null
+        )
+
+        ToggleRow(
+            title = stringResource(R.string.text_device_narodmon_title),
+            subtitle = stringResource(R.string.text_device_narodmon),
+            checked = device.isNarodmonOn,
+            onCheckedChange = { onEvent(DeviceSettingsScreenContract.Event.NarodmonToggled(it)) },
+            onInfoClick = { onEvent(DeviceSettingsScreenContract.Event.NarodmonInfoClicked) },
+            labelColor = headerColor,
+            infoIconTint = labelColorOverride?.let { PreviewBlack54 } ?: colorResource(R.color.black54),
+            infoIconResOverride = null
+        )
+
+        ToggleRow(
+            title = stringResource(R.string.text_device_luftdata_title),
+            subtitle = stringResource(R.string.text_device_luftdata),
+            checked = device.isLuftdataOn,
+            onCheckedChange = { onEvent(DeviceSettingsScreenContract.Event.LuftdataToggled(it)) },
+            onInfoClick = { onEvent(DeviceSettingsScreenContract.Event.LuftdataInfoClicked) },
+            labelColor = headerColor,
+            infoIconTint = labelColorOverride?.let { PreviewBlack54 } ?: colorResource(R.color.black54),
+            infoIconResOverride = null
+        )
+
+        VisibilityRow(
+            label = stringResource(R.string.text_device_visibility),
+            visibilityText = when {
+                !device.hasLocation() -> stringResource(R.string.text_device_visibility_not_registered)
+                device.isPublic -> stringResource(R.string.text_device_visibility_visible)
+                else -> stringResource(R.string.text_device_visibility_private)
+            },
+            publishButtonText = if (device.isPublic) {
+                stringResource(R.string.button_hide)
+            } else {
+                stringResource(R.string.button_publish)
+            },
+            isPublishButtonEnabled = device.hasLocation(),
+            onPublishClick = {
+                if (device.isPublic) {
+                    onEvent(DeviceSettingsScreenContract.Event.VisibilityHideClicked)
+                } else {
+                    onEvent(DeviceSettingsScreenContract.Event.VisibilityPublishClicked)
+                }
+            },
+            labelColor = greyColor
+        )
+
+        Spacer(modifier = Modifier.height(20.dp))
+        AirMQButton(
+            text = stringResource(R.string.button_view_on_map),
+            onClick = { onEvent(DeviceSettingsScreenContract.Event.ShowOnMapClicked) },
+            style = AirMQButtonStyle.Contained,
+            enabled = device.hasLocation(),
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 80.dp)
+        )
+        Spacer(modifier = Modifier.height(20.dp))
+    }
+}
+
+@Composable
+private fun VisibilityRow(
+    label: String,
+    visibilityText: String,
+    publishButtonText: String,
+    isPublishButtonEnabled: Boolean,
+    onPublishClick: () -> Unit,
+    labelColor: Color
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(56.dp)
+            .padding(horizontal = 16.dp),
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.SpaceBetween
+    ) {
+        Column(modifier = Modifier.weight(1f)) {
+            Text(
+                text = label,
+                style = MaterialTheme.typography.bodyMedium.copy(fontSize = 14.sp),
+                color = labelColor
+            )
+            Text(
+                text = visibilityText,
+                style = MaterialTheme.typography.bodyLarge.copy(fontSize = 16.sp)
+            )
+        }
+        AirMQButton(
+            text = publishButtonText,
+            onClick = onPublishClick,
+            enabled = isPublishButtonEnabled,
+            style = AirMQButtonStyle.Text,
+            modifier = Modifier.width(170.dp)
+        )
+    }
+}
+
+@Composable
+private fun ConfigRow(
+    label: String,
+    value: String,
+    onClick: () -> Unit,
+    trailingIcon: Int,
+    iconTint: Color,
+    labelColor: Color
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(56.dp)
+            .clickable(onClick = onClick)
+            .padding(horizontal = 16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Column(modifier = Modifier.weight(1f)) {
+            Text(
+                text = label,
+                style = MaterialTheme.typography.labelMedium.copy(fontSize = 12.sp, fontWeight = FontWeight.Medium),
+                color = labelColor
+            )
+            Text(
+                text = value,
+                style = MaterialTheme.typography.bodyMedium.copy(fontSize = 14.sp)
+            )
+        }
+        Icon(
+            painter = painterResource(trailingIcon),
+            contentDescription = null,
+            modifier = Modifier.size(24.dp),
+            tint = iconTint
+        )
+    }
+}
+
+@Composable
+private fun ConfigRowReadOnly(
+    label: String,
+    value: String,
+    labelColor: Color
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(56.dp)
+            .padding(horizontal = 16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Column {
+            Text(
+                text = label,
+                style = MaterialTheme.typography.labelMedium.copy(fontSize = 12.sp, fontWeight = FontWeight.Medium),
+                color = labelColor
+            )
+            Text(
+                text = value,
+                style = MaterialTheme.typography.bodyMedium.copy(fontSize = 14.sp)
+            )
+        }
+    }
+}
+
+@Composable
+private fun ConfigRowWithIndicator(
+    label: String,
+    value: String,
+    showIndicator: Boolean,
+    indicatorColor: Color,
+    onClick: () -> Unit,
+    trailingIcon: Int?,
+    iconTint: Color,
+    labelColor: Color,
+    indicatorDrawableRes: Int? = null
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(56.dp)
+            .clickable(onClick = onClick)
+            .padding(horizontal = 16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Column(modifier = Modifier.weight(1f)) {
+            Row(verticalAlignment = Alignment.CenterVertically) {
+                Text(
+                    text = label,
+                    style = MaterialTheme.typography.labelMedium.copy(fontSize = 12.sp, fontWeight = FontWeight.Medium),
+                    color = labelColor
+                )
+                if (showIndicator) {
+                    Spacer(modifier = Modifier.size(5.dp))
+                    Icon(
+                        painter = painterResource(indicatorDrawableRes ?: R.drawable.circle_indicator),
+                        contentDescription = null,
+                        modifier = Modifier.size(10.dp),
+                        tint = indicatorColor
+                    )
+                }
+            }
+            Text(
+                text = value,
+                style = MaterialTheme.typography.bodyMedium.copy(fontSize = 14.sp)
+            )
+        }
+        if (trailingIcon != null) {
+            Icon(
+                painter = painterResource(trailingIcon),
+                contentDescription = null,
+                modifier = Modifier.size(24.dp),
+                tint = iconTint
+            )
+        }
+    }
+}
+
+@Composable
+private fun ToggleRow(
+    title: String,
+    subtitle: String,
+    checked: Boolean,
+    onCheckedChange: (Boolean) -> Unit,
+    onInfoClick: () -> Unit,
+    labelColor: Color,
+    infoIconTint: Color,
+    infoIconResOverride: Int? = null
+) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(56.dp)
+            .clickable { onCheckedChange(!checked) }
+            .padding(horizontal = 16.dp),
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.SpaceBetween
+    ) {
+        Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier.weight(1f)
+        ) {
+            Column {
+                Text(
+                    text = title,
+                    style = MaterialTheme.typography.labelMedium.copy(fontSize = 12.sp, fontWeight = FontWeight.Medium),
+                    color = labelColor
+                )
+                Text(
+                    text = subtitle,
+                    style = MaterialTheme.typography.bodyMedium.copy(fontSize = 14.sp)
+                )
+            }
+            IconButton(
+                onClick = onInfoClick,
+                modifier = Modifier
+                    .size(32.dp)
+                    .padding(8.dp)
+            ) {
+                Icon(
+                    painter = painterResource(infoIconResOverride ?: R.drawable.ic_pref_info),
+                    contentDescription = null,
+                    tint = infoIconTint
+                )
+            }
+        }
+        Switch(
+            checked = checked,
+            onCheckedChange = onCheckedChange
+        )
+    }
+}
+
+@Preview(showBackground = true, name = "Device config – no location")
+@Composable
+private fun PreviewDeviceSettingsContentDefault() {
+    AirMQTheme {
+        DeviceSettingsContent(
+            state = DeviceSettingsScreenContract.previewState(),
+            onEvent = {},
+            labelColorOverride = PreviewHeaderColor,
+            greyColorOverride = PreviewGreyColor,
+            iconResOverride = AndroidR.drawable.ic_menu_mylocation
+        )
+    }
+}
+
+@Preview(showBackground = true, name = "Device config – with location")
+@Composable
+private fun PreviewDeviceSettingsContentWithLocation() {
+    AirMQTheme {
+        DeviceSettingsContent(
+            state = DeviceSettingsScreenContract.previewState(
+                device = DeviceSettingsScreenContract.previewDevice(hasLocation = true, isPublic = false)
+            ),
+            onEvent = {},
+            labelColorOverride = PreviewHeaderColor,
+            greyColorOverride = PreviewGreyColor,
+            iconResOverride = AndroidR.drawable.ic_menu_mylocation
+        )
+    }
+}
+
+@Preview(showBackground = true, name = "Device config – public visibility")
+@Composable
+private fun PreviewDeviceSettingsContentPublicVisibility() {
+    AirMQTheme {
+        DeviceSettingsContent(
+            state = DeviceSettingsScreenContract.previewState(
+                device = DeviceSettingsScreenContract.previewDevice(hasLocation = true, isPublic = true)
+            ),
+            onEvent = {},
+            labelColorOverride = PreviewHeaderColor,
+            greyColorOverride = PreviewGreyColor,
+            iconResOverride = AndroidR.drawable.ic_menu_mylocation
+        )
+    }
+}
+
+@Preview(showBackground = true, name = "Device config – config needs update")
+@Composable
+private fun PreviewDeviceSettingsContentConfigNeedsUpdate() {
+    AirMQTheme {
+        DeviceSettingsContent(
+            state = DeviceSettingsScreenContract.previewState(
+                configVersionNeedsUpdate = true
+            ),
+            onEvent = {},
+            labelColorOverride = PreviewHeaderColor,
+            greyColorOverride = PreviewGreyColor,
+            iconResOverride = AndroidR.drawable.ic_menu_mylocation
+        )
+    }
+}
+
+@Preview(showBackground = true, name = "Device config – Narodmon/Luftdata on")
+@Composable
+private fun PreviewDeviceSettingsContentTogglesOn() {
+    AirMQTheme {
+        DeviceSettingsContent(
+            state = DeviceSettingsScreenContract.previewState(
+                device = DeviceSettingsScreenContract.previewDevice(
+                    isNarodmonOn = true,
+                    isLuftdataOn = true
+                )
+            ),
+            onEvent = {},
+            labelColorOverride = PreviewHeaderColor,
+            greyColorOverride = PreviewGreyColor,
+            iconResOverride = AndroidR.drawable.ic_menu_mylocation
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/device/DeviceSettingsScreenContract.kt

@@ -0,0 +1,89 @@
+package org.db3.airmq.features.device
+
+import org.db3.airmq.sdk.device.domain.Device
+import org.db3.airmq.sdk.device.domain.DeviceModel
+import org.db3.airmq.sdk.device.domain.OnlineFreshness
+
+object DeviceSettingsScreenContract {
+
+    fun previewState(
+        device: Device? = previewDevice(),
+        isLoading: Boolean = false,
+        isPendingSync: Boolean = false,
+        configVersionNeedsUpdate: Boolean = false,
+        isConnected: Boolean = true,
+        wifiSsid: String = "Захарова 42"
+    ): State = State(
+        device = device,
+        isLoading = isLoading,
+        isPendingSync = isPendingSync,
+        configVersionNeedsUpdate = configVersionNeedsUpdate,
+        isConnected = isConnected,
+        wifiSsid = wifiSsid
+    )
+
+    fun previewDevice(
+        id: String = "12312",
+        name: String = "Захарова 42",
+        model: DeviceModel = DeviceModel.Mobile,
+        deviceAddress: String = "127.0.0.1",
+        configVersion: String = "42",
+        isNarodmonOn: Boolean = false,
+        isLuftdataOn: Boolean = false,
+        hasLocation: Boolean = false,
+        isPublic: Boolean = false
+    ): Device = Device(
+        id = id,
+        name = name,
+        model = model,
+        firmwareVersion = "1.0",
+        deviceAddress = deviceAddress,
+        configVersion = configVersion,
+        isNarodmonOn = isNarodmonOn,
+        isLuftdataOn = isLuftdataOn,
+        locationId = null,
+        latitude = if (hasLocation) 53.9 else null,
+        longitude = if (hasLocation) 27.5 else null,
+        isPublic = isPublic,
+        city = null,
+        dataSharingEnabled = false,
+        isOnline = true,
+        onlineFreshness = OnlineFreshness.Fresh,
+        ownerId = null
+    )
+
+    data class State(
+        val device: Device? = null,
+        val isLoading: Boolean = false,
+        val errorMessage: String? = null,
+        val isPendingSync: Boolean = false,
+        val configVersionNeedsUpdate: Boolean = false,
+        val isConnected: Boolean = false,
+        val wifiSsid: String = ""
+    )
+
+    sealed interface Action {
+        data class ShowError(val message: String) : Action
+        data object ShowSuccess : Action
+        data object OpenLocation : Action
+        data object ShowOnMap : Action
+        data object OpenInfoUrl : Action
+    }
+
+    sealed interface Event {
+        data class RenameSubmitted(val name: String) : Event
+        data object RenameRowClicked : Event
+        data object ConfigUpdateClicked : Event
+        data class NarodmonToggled(val enabled: Boolean) : Event
+        data class LuftdataToggled(val enabled: Boolean) : Event
+        data object NarodmonInfoClicked : Event
+        data object LuftdataInfoClicked : Event
+        data class LocationSet(val latitude: Double, val longitude: Double) : Event
+        data object LocationRemoved : Event
+        data object FirmwareUpdateClicked : Event
+        data object OpenLocationClicked : Event
+        data object ShowOnMapClicked : Event
+        data object VisibilityPublishClicked : Event
+        data object VisibilityHideClicked : Event
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/device/DeviceSettingsViewModel.kt

@@ -0,0 +1,258 @@
+package org.db3.airmq.features.device
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.assisted.Assisted
+import dagger.assisted.AssistedFactory
+import dagger.assisted.AssistedInject
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import org.db3.airmq.features.device.usecases.GetDeviceUseCase
+import org.db3.airmq.features.device.usecases.ObservePendingSyncUseCase
+import org.db3.airmq.features.device.usecases.RenameDeviceUseCase
+import org.db3.airmq.features.device.usecases.SetDeviceLocationUseCase
+import org.db3.airmq.features.device.usecases.SetDeviceVisibilityUseCase
+import org.db3.airmq.features.device.usecases.SetLuftdataUseCase
+import org.db3.airmq.features.device.usecases.SetNarodmonUseCase
+import org.db3.airmq.features.device.usecases.TriggerFirmwareUpdateUseCase
+import org.db3.airmq.sdk.device.domain.Device
+import org.db3.airmq.sdk.device.domain.DeviceModel
+import org.db3.airmq.sdk.device.domain.OnlineFreshness
+
+@HiltViewModel(assistedFactory = DeviceSettingsViewModel.Factory::class)
+class DeviceSettingsViewModel @AssistedInject constructor(
+    @Assisted private val deviceId: String,
+    private val getDeviceUseCase: GetDeviceUseCase,
+    private val renameDeviceUseCase: RenameDeviceUseCase,
+    private val setDeviceLocationUseCase: SetDeviceLocationUseCase,
+    private val setNarodmonUseCase: SetNarodmonUseCase,
+    private val setLuftdataUseCase: SetLuftdataUseCase,
+    private val setDeviceVisibilityUseCase: SetDeviceVisibilityUseCase,
+    private val triggerFirmwareUpdateUseCase: TriggerFirmwareUpdateUseCase,
+    private val observePendingSyncUseCase: ObservePendingSyncUseCase
+) : ViewModel() {
+
+    @AssistedFactory
+    interface Factory {
+        fun create(deviceId: String): DeviceSettingsViewModel
+    }
+
+    private val _uiState = MutableStateFlow(DeviceSettingsScreenContract.State())
+    val uiState: StateFlow<DeviceSettingsScreenContract.State> = _uiState.asStateFlow()
+
+    private val _actions = MutableSharedFlow<DeviceSettingsScreenContract.Action>(extraBufferCapacity = 1)
+    val actions: SharedFlow<DeviceSettingsScreenContract.Action> = _actions.asSharedFlow()
+
+    init {
+        viewModelScope.launch {
+            combine(
+                getDeviceUseCase(deviceId),
+                observePendingSyncUseCase(deviceId)
+            ) { device, hasPending ->
+                device to hasPending
+            }.collect { (device, hasPending) ->
+                val displayDevice = device ?: stubDevice()
+                val configVersionNeedsUpdate = deriveConfigVersionNeedsUpdate(displayDevice)
+                val isConnected = true // Stub: always connected for UI testing
+                _uiState.update {
+                    it.copy(
+                        device = displayDevice,
+                        isPendingSync = hasPending,
+                        configVersionNeedsUpdate = configVersionNeedsUpdate,
+                        isConnected = isConnected,
+                        wifiSsid = if (device == null) "Захарова 42" else it.wifiSsid.takeIf { s -> s.isNotEmpty() } ?: "—"
+                    )
+                }
+            }
+        }
+    }
+
+    private fun stubDevice(): Device = Device(
+        id = "12312",
+        name = "Захарова 42",
+        model = DeviceModel.Mobile,
+        firmwareVersion = "1.0",
+        deviceAddress = "127.0.0.1",
+        configVersion = "42",
+        isNarodmonOn = false,
+        isLuftdataOn = false,
+        locationId = null,
+        latitude = null,
+        longitude = null,
+        isPublic = false,
+        city = null,
+        dataSharingEnabled = false,
+        isOnline = true,
+        onlineFreshness = OnlineFreshness.Fresh,
+        ownerId = null
+    )
+
+    private fun deriveConfigVersionNeedsUpdate(device: Device): Boolean {
+        // Stub: compare configVersion to expected (e.g. 42); for testing assume up-to-date
+        return false
+    }
+
+    fun onEvent(event: DeviceSettingsScreenContract.Event) {
+        when (event) {
+            is DeviceSettingsScreenContract.Event.RenameSubmitted -> renameDevice(event.name)
+            is DeviceSettingsScreenContract.Event.RenameRowClicked -> { /* UI opens dialog */ }
+            is DeviceSettingsScreenContract.Event.ConfigUpdateClicked -> configUpdateStub()
+            is DeviceSettingsScreenContract.Event.NarodmonToggled -> setNarodmon(event.enabled)
+            is DeviceSettingsScreenContract.Event.LuftdataToggled -> setLuftdata(event.enabled)
+            is DeviceSettingsScreenContract.Event.NarodmonInfoClicked,
+            is DeviceSettingsScreenContract.Event.LuftdataInfoClicked -> _actions.tryEmit(
+                DeviceSettingsScreenContract.Action.OpenInfoUrl
+            )
+            is DeviceSettingsScreenContract.Event.LocationSet -> setLocation(event.latitude, event.longitude)
+            is DeviceSettingsScreenContract.Event.LocationRemoved -> removeLocation()
+            is DeviceSettingsScreenContract.Event.FirmwareUpdateClicked -> triggerFirmwareUpdate()
+            is DeviceSettingsScreenContract.Event.OpenLocationClicked -> _actions.tryEmit(
+                DeviceSettingsScreenContract.Action.OpenLocation
+            )
+            is DeviceSettingsScreenContract.Event.ShowOnMapClicked -> _actions.tryEmit(
+                DeviceSettingsScreenContract.Action.ShowOnMap
+            )
+            is DeviceSettingsScreenContract.Event.VisibilityPublishClicked -> setVisibility(true)
+            is DeviceSettingsScreenContract.Event.VisibilityHideClicked -> setVisibility(false)
+        }
+    }
+
+    private fun configUpdateStub() {
+        viewModelScope.launch {
+            _uiState.update { it.copy(isLoading = true, errorMessage = null) }
+            delay(800)
+            _uiState.update { it.copy(isLoading = false) }
+            _actions.tryEmit(DeviceSettingsScreenContract.Action.ShowSuccess)
+        }
+    }
+
+    private fun renameDevice(name: String) {
+        viewModelScope.launch {
+            _uiState.update { it.copy(isLoading = true, errorMessage = null) }
+            delay(500) // Stub simulation
+            val result = renameDeviceUseCase(deviceId, name)
+            _uiState.update { it.copy(isLoading = false) }
+            if (result.isSuccess) {
+                _actions.tryEmit(DeviceSettingsScreenContract.Action.ShowSuccess)
+            } else {
+                _actions.tryEmit(
+                    DeviceSettingsScreenContract.Action.ShowError(
+                        result.exceptionOrNull()?.message ?: "Failed to rename"
+                    )
+                )
+            }
+        }
+    }
+
+    private fun setNarodmon(enabled: Boolean) {
+        viewModelScope.launch {
+            _uiState.update { it.copy(isLoading = true, errorMessage = null) }
+            delay(300)
+            val result = setNarodmonUseCase(deviceId, enabled)
+            _uiState.update { it.copy(isLoading = false) }
+            if (result.isSuccess) {
+                _actions.tryEmit(DeviceSettingsScreenContract.Action.ShowSuccess)
+            } else {
+                _actions.tryEmit(
+                    DeviceSettingsScreenContract.Action.ShowError(
+                        result.exceptionOrNull()?.message ?: "Failed to update Narodmon"
+                    )
+                )
+            }
+        }
+    }
+
+    private fun setLuftdata(enabled: Boolean) {
+        viewModelScope.launch {
+            _uiState.update { it.copy(isLoading = true, errorMessage = null) }
+            delay(300)
+            val result = setLuftdataUseCase(deviceId, enabled)
+            _uiState.update { it.copy(isLoading = false) }
+            if (result.isSuccess) {
+                _actions.tryEmit(DeviceSettingsScreenContract.Action.ShowSuccess)
+            } else {
+                _actions.tryEmit(
+                    DeviceSettingsScreenContract.Action.ShowError(
+                        result.exceptionOrNull()?.message ?: "Failed to update Sensor.community"
+                    )
+                )
+            }
+        }
+    }
+
+    private fun setLocation(latitude: Double, longitude: Double) {
+        viewModelScope.launch {
+            _uiState.update { it.copy(isLoading = true, errorMessage = null) }
+            val result = setDeviceLocationUseCase.setLocation(deviceId, latitude, longitude)
+            _uiState.update { it.copy(isLoading = false) }
+            if (result.isSuccess) {
+                _actions.tryEmit(DeviceSettingsScreenContract.Action.ShowSuccess)
+            } else {
+                _actions.tryEmit(
+                    DeviceSettingsScreenContract.Action.ShowError(
+                        result.exceptionOrNull()?.message ?: "Failed to set location"
+                    )
+                )
+            }
+        }
+    }
+
+    private fun removeLocation() {
+        viewModelScope.launch {
+            _uiState.update { it.copy(isLoading = true, errorMessage = null) }
+            val result = setDeviceLocationUseCase.removeLocation(deviceId)
+            _uiState.update { it.copy(isLoading = false) }
+            if (result.isSuccess) {
+                _actions.tryEmit(DeviceSettingsScreenContract.Action.ShowSuccess)
+            } else {
+                _actions.tryEmit(
+                    DeviceSettingsScreenContract.Action.ShowError(
+                        result.exceptionOrNull()?.message ?: "Failed to remove location"
+                    )
+                )
+            }
+        }
+    }
+
+    private fun setVisibility(isPublic: Boolean) {
+        viewModelScope.launch {
+            _uiState.update { it.copy(isLoading = true, errorMessage = null) }
+            delay(300)
+            val result = setDeviceVisibilityUseCase(deviceId, isPublic)
+            _uiState.update { it.copy(isLoading = false) }
+            if (result.isFailure) {
+                _actions.tryEmit(
+                    DeviceSettingsScreenContract.Action.ShowError(
+                        result.exceptionOrNull()?.message ?: "Failed to update visibility"
+                    )
+                )
+            }
+        }
+    }
+
+    private fun triggerFirmwareUpdate() {
+        viewModelScope.launch {
+            _uiState.update { it.copy(isLoading = true, errorMessage = null) }
+            val result = triggerFirmwareUpdateUseCase(deviceId)
+            _uiState.update { it.copy(isLoading = false) }
+            if (result.isSuccess) {
+                _actions.tryEmit(DeviceSettingsScreenContract.Action.ShowSuccess)
+            } else {
+                _actions.tryEmit(
+                    DeviceSettingsScreenContract.Action.ShowError(
+                        result.exceptionOrNull()?.message ?: "Failed to trigger firmware update"
+                    )
+                )
+            }
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/GetDeviceUseCase.kt

@@ -0,0 +1,15 @@
+package org.db3.airmq.features.device.usecases
+
+import kotlinx.coroutines.flow.Flow
+import org.db3.airmq.sdk.device.domain.Device
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to observe a single device by ID.
+ */
+class GetDeviceUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    operator fun invoke(deviceId: String): Flow<Device?> = repository.observeDevice(deviceId)
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/GetMyDevicesUseCase.kt

@@ -0,0 +1,15 @@
+package org.db3.airmq.features.device.usecases
+
+import kotlinx.coroutines.flow.Flow
+import org.db3.airmq.sdk.device.domain.Device
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to observe the current user's devices from local database.
+ */
+class GetMyDevicesUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    operator fun invoke(): Flow<List<Device>> = repository.observeDevices()
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/ObservePendingSyncUseCase.kt

@@ -0,0 +1,15 @@
+package org.db3.airmq.features.device.usecases
+
+import kotlinx.coroutines.flow.Flow
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to observe whether a device has pending mutations (offline changes to sync).
+ */
+class ObservePendingSyncUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    operator fun invoke(deviceId: String): Flow<Boolean> =
+        repository.observeHasPendingMutations(deviceId)
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/RenameDeviceUseCase.kt

@@ -0,0 +1,20 @@
+package org.db3.airmq.features.device.usecases
+
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to rename a device.
+ * Validates input and delegates to repository.
+ */
+class RenameDeviceUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    suspend operator fun invoke(deviceId: String, newName: String): Result<Unit> {
+        val trimmed = newName.trim()
+        if (trimmed.length < 3) {
+            return Result.failure(IllegalArgumentException("Name must be at least 3 characters"))
+        }
+        return repository.renameDevice(deviceId, trimmed)
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/SetDataSharingUseCase.kt

@@ -0,0 +1,14 @@
+package org.db3.airmq.features.device.usecases
+
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to enable or disable data sharing for a device.
+ */
+class SetDataSharingUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    suspend operator fun invoke(deviceId: String, enabled: Boolean): Result<Unit> =
+        repository.setDataSharing(deviceId, enabled)
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/SetDeviceLocationUseCase.kt

@@ -0,0 +1,17 @@
+package org.db3.airmq.features.device.usecases
+
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to set or remove device location.
+ */
+class SetDeviceLocationUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    suspend fun setLocation(deviceId: String, latitude: Double, longitude: Double): Result<Unit> =
+        repository.setLocation(deviceId, latitude, longitude)
+
+    suspend fun removeLocation(deviceId: String): Result<Unit> =
+        repository.removeLocation(deviceId)
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/SetDeviceVisibilityUseCase.kt

@@ -0,0 +1,15 @@
+package org.db3.airmq.features.device.usecases
+
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to set device visibility (publish/hide location on map).
+ * Only effective when device has location.
+ */
+class SetDeviceVisibilityUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    suspend operator fun invoke(deviceId: String, isPublic: Boolean): Result<Unit> =
+        repository.setVisibility(deviceId, isPublic)
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/SetLuftdataUseCase.kt

@@ -0,0 +1,14 @@
+package org.db3.airmq.features.device.usecases
+
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to enable or disable Sensor.community (Luftdata) data sharing for a device.
+ */
+class SetLuftdataUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    suspend operator fun invoke(deviceId: String, enabled: Boolean): Result<Unit> =
+        repository.setLuftdata(deviceId, enabled)
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/SetNarodmonUseCase.kt

@@ -0,0 +1,14 @@
+package org.db3.airmq.features.device.usecases
+
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to enable or disable Narodmon.ru data sharing for a device.
+ */
+class SetNarodmonUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    suspend operator fun invoke(deviceId: String, enabled: Boolean): Result<Unit> =
+        repository.setNarodmon(deviceId, enabled)
+}

app/src/main/kotlin/org/db3/airmq/features/device/usecases/TriggerFirmwareUpdateUseCase.kt

@@ -0,0 +1,15 @@
+package org.db3.airmq.features.device.usecases
+
+import org.db3.airmq.sdk.device.domain.DeviceRepository
+import javax.inject.Inject
+
+/**
+ * Use case to trigger firmware update for a device.
+ * Requires connectivity - blocks when offline.
+ */
+class TriggerFirmwareUpdateUseCase @Inject constructor(
+    private val repository: DeviceRepository
+) {
+    suspend operator fun invoke(deviceId: String): Result<Unit> =
+        repository.triggerFirmwareUpdate(deviceId)
+}

app/src/main/kotlin/org/db3/airmq/features/entry/CityInitializer.kt

@@ -0,0 +1,103 @@
+package org.db3.airmq.features.entry
+
+import android.Manifest
+import android.content.Context
+import android.content.pm.PackageManager
+import android.telephony.TelephonyManager
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.platform.LocalContext
+import androidx.core.content.ContextCompat
+import com.google.android.gms.location.LocationServices
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.tasks.await
+import kotlinx.coroutines.withContext
+import org.db3.airmq.sdk.city.CityService
+
+/**
+ * Composable that runs the run-once city resolution flow when city_init is false.
+ * Requests location permission, gets location or country, and calls CityService.initialize().
+ */
+@Composable
+fun CityInitializer(
+    cityService: CityService,
+    content: @Composable () -> Unit
+) {
+    val context = LocalContext.current
+    val activity = context as? android.app.Activity
+    val scope = rememberCoroutineScope()
+
+    val permissionLauncher = rememberLauncherForActivityResult(
+        contract = ActivityResultContracts.RequestMultiplePermissions()
+    ) { result ->
+        val granted = result.values.any { it }
+        scope.launch {
+            val location = if (granted && activity != null) {
+                withContext(Dispatchers.IO) {
+                    runCatching {
+                        LocationServices.getFusedLocationProviderClient(activity).getLastLocation().await()
+                    }.getOrNull()
+                }
+            } else null
+
+            val country = if (!granted) {
+                withContext(Dispatchers.IO) {
+                    (context.getSystemService(Context.TELEPHONY_SERVICE) as? TelephonyManager)
+                        ?.networkCountryIso
+                        ?.takeIf { !it.isNullOrBlank() }
+                }
+            } else null
+
+            cityService.initialize(granted, location, country)
+        }
+    }
+
+    LaunchedEffect(cityService) {
+        if (!cityService.isCityInitComplete()) {
+            val permissions = arrayOf(
+                Manifest.permission.ACCESS_FINE_LOCATION,
+                Manifest.permission.ACCESS_COARSE_LOCATION
+            )
+            val allGranted = permissions.all {
+                ContextCompat.checkSelfPermission(context, it) == PackageManager.PERMISSION_GRANTED
+            }
+            if (allGranted) {
+                val location = withContext(Dispatchers.IO) {
+                    runCatching {
+                        LocationServices.getFusedLocationProviderClient(context).getLastLocation().await()
+                    }.getOrNull()
+                }
+                val country = withContext(Dispatchers.IO) {
+                    (context.getSystemService(Context.TELEPHONY_SERVICE) as? TelephonyManager)
+                        ?.networkCountryIso
+                        ?.takeIf { !it.isNullOrBlank() }
+                }
+                cityService.initialize(true, location, country)
+            } else {
+                permissionLauncher.launch(permissions)
+            }
+        } else if (cityService.getDetectAutomatically()) {
+            val permissions = arrayOf(
+                Manifest.permission.ACCESS_FINE_LOCATION,
+                Manifest.permission.ACCESS_COARSE_LOCATION
+            )
+            val allGranted = permissions.all {
+                ContextCompat.checkSelfPermission(context, it) == PackageManager.PERMISSION_GRANTED
+            }
+            if (allGranted && activity != null) {
+                val location = withContext(Dispatchers.IO) {
+                    runCatching {
+                        LocationServices.getFusedLocationProviderClient(activity).getLastLocation().await()
+                    }.getOrNull()
+                }
+                cityService.refreshCityFromLocation(location)
+            }
+        }
+    }
+
+    content()
+}

app/src/main/kotlin/org/db3/airmq/features/entry/SplashScreen.kt

@@ -1,14 +1,16 @@
 package org.db3.airmq.features.entry
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
 @Composable
 fun SplashScreen(onContinue: () -> Unit) {
     MockScreenScaffold(
-        title = "Splash",
-        subtitle = "Entry flow starting point.",
-        actions = listOf(ScreenAction(label = "Continue to Wizard", onClick = onContinue))
+        title = stringResource(id = R.string.screen_splash_title),
+        subtitle = stringResource(id = R.string.coming_soon),
+        actions = listOf(ScreenAction(label = stringResource(id = R.string.screen_continue_to_wizard), onClick = onContinue))
     )
 }

app/src/main/kotlin/org/db3/airmq/features/entry/WizardScreen.kt

@@ -1,14 +1,16 @@
 package org.db3.airmq.features.entry
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
 @Composable
 fun WizardScreen(onFinish: () -> Unit) {
     MockScreenScaffold(
-        title = "Wizard",
-        subtitle = "Mock onboarding/wizard flow.",
-        actions = listOf(ScreenAction(label = "Finish Wizard", onClick = onFinish))
+        title = stringResource(id = R.string.screen_wizard_title),
+        subtitle = stringResource(id = R.string.coming_soon),
+        actions = listOf(ScreenAction(label = stringResource(id = R.string.screen_finish_wizard), onClick = onFinish))
     )
 }

app/src/main/kotlin/org/db3/airmq/features/location/LocationScreen.kt

@@ -1,14 +1,16 @@
 package org.db3.airmq.features.location
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
 @Composable
 fun LocationScreen(onBackToManage: () -> Unit) {
     MockScreenScaffold(
-        title = "Location",
-        subtitle = "Mock location picker/editor screen.",
-        actions = listOf(ScreenAction("Back to Manage", onBackToManage))
+        title = stringResource(id = R.string.title_location),
+        subtitle = stringResource(id = R.string.coming_soon),
+        actions = listOf(ScreenAction(stringResource(id = R.string.back_to_manage), onBackToManage))
     )
 }

app/src/main/kotlin/org/db3/airmq/features/login/EmailLoginScreen.kt

@@ -0,0 +1,248 @@
+package org.db3.airmq.features.login
+
+import android.widget.Toast
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.OutlinedTextFieldDefaults
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.autofill.ContentType
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.semantics.contentType
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.runtime.collectAsState
+import androidx.compose.ui.platform.LocalContext
+import androidx.hilt.navigation.compose.hiltViewModel
+import kotlinx.coroutines.flow.collectLatest
+import org.db3.airmq.R
+import androidx.compose.material3.TextButton
+import org.db3.airmq.features.common.AirMQOutlinedLightButton
+import org.db3.airmq.features.login.EmailLoginScreenContract.Action
+import org.db3.airmq.features.login.EmailLoginScreenContract.Event
+import org.db3.airmq.features.login.EmailLoginScreenContract.State
+import org.db3.airmq.ui.theme.AirMQTheme
+
+private val LegacyLoginGradientStart = Color(0xFF449CF5)
+private val LegacyLoginGradientEnd = Color(0xFF5CE4BB)
+
+@Composable
+fun EmailLoginScreen(
+    onLogInToManage: () -> Unit,
+    onOpenRegister: () -> Unit,
+    onBack: () -> Unit,
+    viewModel: EmailLoginViewModel = hiltViewModel()
+) {
+    val uiState by viewModel.uiState.collectAsState()
+    val context = LocalContext.current
+
+    LaunchedEffect(viewModel) {
+        viewModel.actions.collectLatest { action ->
+            when (action) {
+                Action.OpenManage -> onLogInToManage()
+                Action.NavigateToRegister -> onOpenRegister()
+                is Action.ShowMessage -> {
+                    Toast.makeText(context, action.message, Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
+
+    EmailLoginScreenContent(
+        uiState = uiState,
+        onEvent = viewModel::onEvent,
+        onBack = onBack
+    )
+}
+
+@Composable
+private fun EmailLoginScreenContent(
+    uiState: State,
+    onEvent: (Event) -> Unit,
+    onBack: () -> Unit
+) {
+    Box(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(
+                brush = Brush.linearGradient(
+                    colorStops = arrayOf(
+                        0.0f to LegacyLoginGradientStart,
+                        0.35f to LegacyLoginGradientStart,
+                        1.0f to LegacyLoginGradientEnd
+                    ),
+                    start = Offset(0f, 0f),
+                    end = Offset(1200f, 1200f)
+                )
+            )
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .statusBarsPadding()
+                .padding(horizontal = 40.dp),
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Spacer(modifier = Modifier.height(16.dp))
+
+            Box(
+                modifier = Modifier.fillMaxWidth(),
+                contentAlignment = Alignment.CenterStart
+            ) {
+                IconButton(onClick = onBack) {
+                    Icon(
+                        painter = painterResource(id = R.drawable.ic_arrow_back),
+                        contentDescription = stringResource(id = R.string.content_back),
+                        tint = Color.White
+                    )
+                }
+            }
+
+            Spacer(modifier = Modifier.height(24.dp))
+
+            Box(
+                modifier = Modifier
+                    .weight(1f)
+                    .fillMaxWidth(),
+                contentAlignment = Alignment.Center
+            ) {
+                Column(
+                    modifier = Modifier.fillMaxWidth(),
+                    verticalArrangement = Arrangement.spacedBy(16.dp)
+                ) {
+                    Text(
+                        text = stringResource(id = R.string.text_sign_in_email),
+                        color = Color.White,
+                        fontSize = 36.sp,
+                        fontWeight = FontWeight.Light,
+                        textAlign = TextAlign.Center,
+                        modifier = Modifier.fillMaxWidth()
+                    )
+
+                    Spacer(modifier = Modifier.height(8.dp))
+
+                    OutlinedTextField(
+                        value = uiState.email,
+                        onValueChange = { onEvent(Event.EmailChanged(it)) },
+                        singleLine = true,
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .semantics {
+                                contentType = ContentType.Username + ContentType.EmailAddress
+                            },
+                        placeholder = {
+                            Text(
+                                stringResource(id = R.string.hint_email),
+                                color = Color.White.copy(alpha = 0.7f)
+                            )
+                        },
+                        keyboardOptions = KeyboardOptions(
+                            keyboardType = KeyboardType.Email,
+                            imeAction = ImeAction.Next
+                        ),
+                        colors = OutlinedTextFieldDefaults.colors(
+                            focusedTextColor = Color.White,
+                            unfocusedTextColor = Color.White,
+                            cursorColor = Color.White,
+                            focusedBorderColor = Color.White.copy(alpha = 0.8f),
+                            unfocusedBorderColor = Color.White.copy(alpha = 0.55f),
+                            focusedContainerColor = Color.White.copy(alpha = 0.1f),
+                            unfocusedContainerColor = Color.White.copy(alpha = 0.05f)
+                        )
+                    )
+
+                    OutlinedTextField(
+                        value = uiState.password,
+                        onValueChange = { onEvent(Event.PasswordChanged(it)) },
+                        singleLine = true,
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .semantics { contentType = ContentType.Password },
+                        placeholder = {
+                            Text(
+                                stringResource(id = R.string.hint_password),
+                                color = Color.White.copy(alpha = 0.7f)
+                            )
+                        },
+                        visualTransformation = PasswordVisualTransformation(),
+                        keyboardOptions = KeyboardOptions(
+                            keyboardType = KeyboardType.Password,
+                            imeAction = ImeAction.Done
+                        ),
+                        colors = OutlinedTextFieldDefaults.colors(
+                            focusedTextColor = Color.White,
+                            unfocusedTextColor = Color.White,
+                            cursorColor = Color.White,
+                            focusedBorderColor = Color.White.copy(alpha = 0.8f),
+                            unfocusedBorderColor = Color.White.copy(alpha = 0.55f),
+                            focusedContainerColor = Color.White.copy(alpha = 0.1f),
+                            unfocusedContainerColor = Color.White.copy(alpha = 0.05f)
+                        )
+                    )
+
+                    if (uiState.isLoading) {
+                        CircularProgressIndicator(color = Color.White)
+                    } else {
+                        AirMQOutlinedLightButton(
+                            text = stringResource(id = R.string.button_sign_in),
+                            modifier = Modifier.fillMaxWidth(),
+                            onClick = { onEvent(Event.SignInClicked) }
+                        )
+                    }
+
+                    TextButton(
+                        onClick = { onEvent(Event.RegisterClicked) },
+                        modifier = Modifier.fillMaxWidth()
+                    ) {
+                        Text(
+                            text = stringResource(id = R.string.button_register),
+                            color = Color.White
+                        )
+                    }
+                }
+            }
+
+            Spacer(modifier = Modifier.height(24.dp))
+        }
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun EmailLoginScreenPreview() {
+    AirMQTheme {
+        EmailLoginScreenContent(
+            uiState = State(),
+            onEvent = {},
+            onBack = {}
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/login/EmailLoginScreenContract.kt

@@ -0,0 +1,24 @@
+package org.db3.airmq.features.login
+
+object EmailLoginScreenContract {
+
+    data class State(
+        val email: String = "",
+        val password: String = "",
+        val isLoading: Boolean = false
+    )
+
+    sealed interface Action {
+        data object OpenManage : Action
+        data object NavigateToRegister : Action
+        data class ShowMessage(val message: String) : Action
+    }
+
+    sealed interface Event {
+        data class EmailChanged(val value: String) : Event
+        data class PasswordChanged(val value: String) : Event
+        data object SignInClicked : Event
+        data object RegisterClicked : Event
+        data object BackClicked : Event
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/login/EmailLoginViewModel.kt

@@ -0,0 +1,80 @@
+package org.db3.airmq.features.login
+
+import android.content.Context
+import android.util.Patterns
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import org.db3.airmq.R
+import org.db3.airmq.features.login.EmailLoginScreenContract.Action
+import org.db3.airmq.features.login.EmailLoginScreenContract.Event
+import org.db3.airmq.features.login.EmailLoginScreenContract.State
+import org.db3.airmq.sdk.auth.AuthService
+
+@HiltViewModel
+class EmailLoginViewModel @Inject constructor(
+    @ApplicationContext private val appContext: Context,
+    private val authService: AuthService
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(State())
+    val uiState: StateFlow<State> = _uiState.asStateFlow()
+
+    private val _actions = MutableSharedFlow<Action>(extraBufferCapacity = 1)
+    val actions: SharedFlow<Action> = _actions.asSharedFlow()
+
+    fun onEvent(event: Event) {
+        when (event) {
+            is Event.EmailChanged -> {
+                _uiState.value = _uiState.value.copy(email = event.value)
+            }
+            is Event.PasswordChanged -> {
+                _uiState.value = _uiState.value.copy(password = event.value)
+            }
+            Event.SignInClicked -> submitEmailAuth()
+            Event.RegisterClicked -> _actions.tryEmit(Action.NavigateToRegister)
+            Event.BackClicked -> Unit
+        }
+    }
+
+    private fun submitEmailAuth() {
+        val email = _uiState.value.email.trim()
+        val password = _uiState.value.password
+        if (email.isEmpty() || password.isEmpty()) {
+            _actions.tryEmit(
+                Action.ShowMessage(appContext.getString(R.string.toast_email_fields_required))
+            )
+            return
+        }
+        if (!Patterns.EMAIL_ADDRESS.matcher(email).matches()) {
+            _actions.tryEmit(
+                Action.ShowMessage(appContext.getString(R.string.toast_invalid_email))
+            )
+            return
+        }
+        viewModelScope.launch {
+            _uiState.value = _uiState.value.copy(isLoading = true)
+            try {
+                val result = authService.loginWithEmailPassword(email, password)
+                if (result.isSuccess) {
+                    _actions.tryEmit(Action.OpenManage)
+                } else {
+                    val message = result.exceptionOrNull()?.message
+                        ?: appContext.getString(R.string.toast_email_auth_failed)
+                    _actions.tryEmit(Action.ShowMessage(message))
+                }
+            } finally {
+                _uiState.value = _uiState.value.copy(isLoading = false)
+            }
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/login/EmailRegisterScreen.kt

@@ -0,0 +1,357 @@
+package org.db3.airmq.features.login
+
+import android.widget.Toast
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.OutlinedTextFieldDefaults
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.autofill.ContentType
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalAutofillManager
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.semantics.contentType
+import androidx.compose.ui.semantics.semantics
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.runtime.collectAsState
+import androidx.hilt.navigation.compose.hiltViewModel
+import kotlinx.coroutines.flow.collectLatest
+import org.db3.airmq.R
+import org.db3.airmq.features.common.AirMQOutlinedLightButton
+import org.db3.airmq.features.login.EmailRegisterScreenContract.Action
+import org.db3.airmq.features.login.EmailRegisterScreenContract.Event
+import org.db3.airmq.features.login.EmailRegisterScreenContract.State
+import org.db3.airmq.ui.theme.AirMQTheme
+
+private val LegacyLoginGradientStart = Color(0xFF449CF5)
+private val LegacyLoginGradientEnd = Color(0xFF5CE4BB)
+
+@Composable
+fun EmailRegisterScreen(
+    onRegisterSuccess: () -> Unit,
+    onBack: () -> Unit,
+    viewModel: EmailRegisterViewModel = hiltViewModel()
+) {
+    val uiState by viewModel.uiState.collectAsState()
+    val context = LocalContext.current
+    val autofillManager = LocalAutofillManager.current
+
+    LaunchedEffect(viewModel) {
+        viewModel.actions.collectLatest { action ->
+            when (action) {
+                Action.OpenManage -> {
+                    autofillManager?.commit()
+                    onRegisterSuccess()
+                }
+                is Action.ShowMessage -> {
+                    Toast.makeText(context, action.message, Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
+
+    EmailRegisterScreenContent(
+        uiState = uiState,
+        onEvent = viewModel::onEvent,
+        onBack = onBack
+    )
+}
+
+@Composable
+private fun EmailRegisterScreenContent(
+    uiState: State,
+    onEvent: (Event) -> Unit,
+    onBack: () -> Unit
+) {
+    val fieldEnabled = !uiState.isLoading
+    val scroll = rememberScrollState()
+
+    Box(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(
+                brush = Brush.linearGradient(
+                    colorStops = arrayOf(
+                        0.0f to LegacyLoginGradientStart,
+                        0.35f to LegacyLoginGradientStart,
+                        1.0f to LegacyLoginGradientEnd
+                    ),
+                    start = Offset(0f, 0f),
+                    end = Offset(1200f, 1200f)
+                )
+            )
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .statusBarsPadding()
+                .padding(horizontal = 40.dp),
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Spacer(modifier = Modifier.height(16.dp))
+
+            Box(
+                modifier = Modifier.fillMaxWidth(),
+                contentAlignment = Alignment.CenterStart
+            ) {
+                IconButton(onClick = onBack, enabled = fieldEnabled) {
+                    Icon(
+                        painter = painterResource(id = R.drawable.ic_arrow_back),
+                        contentDescription = stringResource(id = R.string.content_back),
+                        tint = Color.White
+                    )
+                }
+            }
+
+            Spacer(modifier = Modifier.height(24.dp))
+
+            Column(
+                modifier = Modifier
+                    .weight(1f)
+                    .fillMaxWidth()
+                    .verticalScroll(scroll),
+                verticalArrangement = Arrangement.spacedBy(16.dp),
+                horizontalAlignment = Alignment.CenterHorizontally
+            ) {
+                Text(
+                    text = stringResource(id = R.string.text_register_email_title),
+                    color = Color.White,
+                    fontSize = 36.sp,
+                    fontWeight = FontWeight.Light,
+                    textAlign = TextAlign.Center,
+                    modifier = Modifier.fillMaxWidth()
+                )
+
+                Spacer(modifier = Modifier.height(8.dp))
+
+                OutlinedTextField(
+                    value = uiState.name,
+                    onValueChange = { onEvent(Event.NameChanged(it)) },
+                    singleLine = true,
+                    enabled = fieldEnabled,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .semantics { contentType = ContentType.PersonFullName },
+                    isError = uiState.nameError != null,
+                    supportingText = uiState.nameError?.let { err ->
+                        { Text(err, color = Color.White.copy(alpha = 0.9f)) }
+                    },
+                    placeholder = {
+                        Text(
+                            stringResource(id = R.string.hint_register_name),
+                            color = Color.White.copy(alpha = 0.7f)
+                        )
+                    },
+                    keyboardOptions = KeyboardOptions(
+                        keyboardType = KeyboardType.Text,
+                        imeAction = ImeAction.Next
+                    ),
+                    colors = legacyLoginFieldColors()
+                )
+
+                OutlinedTextField(
+                    value = uiState.email,
+                    onValueChange = { onEvent(Event.EmailChanged(it)) },
+                    singleLine = true,
+                    enabled = fieldEnabled,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .semantics {
+                            contentType = ContentType.NewUsername + ContentType.EmailAddress
+                        },
+                    isError = uiState.emailError != null,
+                    supportingText = uiState.emailError?.let { err ->
+                        { Text(err, color = Color.White.copy(alpha = 0.9f)) }
+                    },
+                    placeholder = {
+                        Text(
+                            stringResource(id = R.string.hint_email),
+                            color = Color.White.copy(alpha = 0.7f)
+                        )
+                    },
+                    keyboardOptions = KeyboardOptions(
+                        keyboardType = KeyboardType.Email,
+                        imeAction = ImeAction.Next
+                    ),
+                    colors = legacyLoginFieldColors()
+                )
+
+                OutlinedTextField(
+                    value = uiState.password,
+                    onValueChange = { onEvent(Event.PasswordChanged(it)) },
+                    singleLine = true,
+                    enabled = fieldEnabled,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .semantics { contentType = ContentType.NewPassword },
+                    isError = uiState.passwordError != null,
+                    supportingText = uiState.passwordError?.let { err ->
+                        { Text(err, color = Color.White.copy(alpha = 0.9f)) }
+                    },
+                    placeholder = {
+                        Text(
+                            stringResource(id = R.string.hint_password),
+                            color = Color.White.copy(alpha = 0.7f)
+                        )
+                    },
+                    visualTransformation = PasswordVisualTransformation(),
+                    keyboardOptions = KeyboardOptions(
+                        keyboardType = KeyboardType.Password,
+                        imeAction = ImeAction.Next
+                    ),
+                    colors = legacyLoginFieldColors()
+                )
+
+                OutlinedTextField(
+                    value = uiState.passwordConfirm,
+                    onValueChange = { onEvent(Event.PasswordConfirmChanged(it)) },
+                    singleLine = true,
+                    enabled = fieldEnabled,
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .semantics { contentType = ContentType.NewPassword },
+                    isError = uiState.passwordConfirmError != null,
+                    supportingText = uiState.passwordConfirmError?.let { err ->
+                        { Text(err, color = Color.White.copy(alpha = 0.9f)) }
+                    },
+                    placeholder = {
+                        Text(
+                            stringResource(id = R.string.hint_password_confirm),
+                            color = Color.White.copy(alpha = 0.7f)
+                        )
+                    },
+                    visualTransformation = PasswordVisualTransformation(),
+                    keyboardOptions = KeyboardOptions(
+                        keyboardType = KeyboardType.Password,
+                        imeAction = ImeAction.Done
+                    ),
+                    colors = legacyLoginFieldColors()
+                )
+
+                if (uiState.isLoading) {
+                    CircularProgressIndicator(color = Color.White)
+                } else {
+                    AirMQOutlinedLightButton(
+                        text = stringResource(id = R.string.button_register),
+                        modifier = Modifier.fillMaxWidth(),
+                        onClick = { onEvent(Event.RegisterClicked) }
+                    )
+                }
+            }
+
+            Spacer(modifier = Modifier.height(24.dp))
+        }
+    }
+}
+
+@Composable
+private fun legacyLoginFieldColors() = OutlinedTextFieldDefaults.colors(
+    focusedTextColor = Color.White,
+    unfocusedTextColor = Color.White,
+    cursorColor = Color.White,
+    focusedBorderColor = Color.White.copy(alpha = 0.8f),
+    unfocusedBorderColor = Color.White.copy(alpha = 0.55f),
+    focusedContainerColor = Color.White.copy(alpha = 0.1f),
+    unfocusedContainerColor = Color.White.copy(alpha = 0.05f),
+    errorBorderColor = Color.White.copy(alpha = 0.95f),
+    errorCursorColor = Color.White,
+    errorSupportingTextColor = Color.White.copy(alpha = 0.95f)
+)
+
+@Preview(showBackground = true)
+@Composable
+private fun EmailRegisterScreenPreviewEmpty() {
+    AirMQTheme {
+        EmailRegisterScreenContent(
+            uiState = EmailRegisterScreenContract.previewState(),
+            onEvent = {},
+            onBack = {}
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun EmailRegisterScreenPreviewFilled() {
+    AirMQTheme {
+        EmailRegisterScreenContent(
+            uiState = EmailRegisterScreenContract.previewState(
+                name = "Alex",
+                email = "alex@example.com",
+                password = "secret1",
+                passwordConfirm = "secret1"
+            ),
+            onEvent = {},
+            onBack = {}
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun EmailRegisterScreenPreviewLoading() {
+    AirMQTheme {
+        EmailRegisterScreenContent(
+            uiState = EmailRegisterScreenContract.previewState(
+                name = "Alex",
+                email = "alex@example.com",
+                password = "secret1",
+                passwordConfirm = "secret1",
+                isLoading = true
+            ),
+            onEvent = {},
+            onBack = {}
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun EmailRegisterScreenPreviewErrors() {
+    AirMQTheme {
+        EmailRegisterScreenContent(
+            uiState = EmailRegisterScreenContract.previewState(
+                name = "",
+                email = "bad",
+                password = "12",
+                passwordConfirm = "34",
+                nameError = "Enter your name",
+                emailError = "Invalid email",
+                passwordError = "Too short",
+                passwordConfirmError = "Does not match"
+            ),
+            onEvent = {},
+            onBack = {}
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/login/EmailRegisterScreenContract.kt

@@ -0,0 +1,52 @@
+package org.db3.airmq.features.login
+
+object EmailRegisterScreenContract {
+
+    data class State(
+        val name: String = "",
+        val email: String = "",
+        val password: String = "",
+        val passwordConfirm: String = "",
+        val isLoading: Boolean = false,
+        val nameError: String? = null,
+        val emailError: String? = null,
+        val passwordError: String? = null,
+        val passwordConfirmError: String? = null
+    )
+
+    fun previewState(
+        name: String = "",
+        email: String = "",
+        password: String = "",
+        passwordConfirm: String = "",
+        isLoading: Boolean = false,
+        nameError: String? = null,
+        emailError: String? = null,
+        passwordError: String? = null,
+        passwordConfirmError: String? = null
+    ): State = State(
+        name = name,
+        email = email,
+        password = password,
+        passwordConfirm = passwordConfirm,
+        isLoading = isLoading,
+        nameError = nameError,
+        emailError = emailError,
+        passwordError = passwordError,
+        passwordConfirmError = passwordConfirmError
+    )
+
+    sealed interface Action {
+        data object OpenManage : Action
+        data class ShowMessage(val message: String) : Action
+    }
+
+    sealed interface Event {
+        data class NameChanged(val value: String) : Event
+        data class EmailChanged(val value: String) : Event
+        data class PasswordChanged(val value: String) : Event
+        data class PasswordConfirmChanged(val value: String) : Event
+        data object RegisterClicked : Event
+        data object BackClicked : Event
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/login/EmailRegisterViewModel.kt

@@ -0,0 +1,122 @@
+package org.db3.airmq.features.login
+
+import android.content.Context
+import android.util.Patterns
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import org.db3.airmq.R
+import org.db3.airmq.features.login.EmailRegisterScreenContract.Action
+import org.db3.airmq.features.login.EmailRegisterScreenContract.Event
+import org.db3.airmq.features.login.EmailRegisterScreenContract.State
+import org.db3.airmq.sdk.auth.AuthService
+
+private const val MinPasswordLength = 6
+
+@HiltViewModel
+class EmailRegisterViewModel @Inject constructor(
+    @ApplicationContext private val appContext: Context,
+    private val authService: AuthService
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(State())
+    val uiState: StateFlow<State> = _uiState.asStateFlow()
+
+    private val _actions = MutableSharedFlow<Action>(extraBufferCapacity = 1)
+    val actions: SharedFlow<Action> = _actions.asSharedFlow()
+
+    fun onEvent(event: Event) {
+        when (event) {
+            is Event.NameChanged -> {
+                _uiState.value = _uiState.value.copy(name = event.value, nameError = null)
+            }
+            is Event.EmailChanged -> {
+                _uiState.value = _uiState.value.copy(email = event.value, emailError = null)
+            }
+            is Event.PasswordChanged -> {
+                _uiState.value = _uiState.value.copy(password = event.value, passwordError = null)
+            }
+            is Event.PasswordConfirmChanged -> {
+                _uiState.value = _uiState.value.copy(
+                    passwordConfirm = event.value,
+                    passwordConfirmError = null
+                )
+            }
+            Event.RegisterClicked -> register()
+            Event.BackClicked -> Unit
+        }
+    }
+
+    private fun register() {
+        val s = _uiState.value
+        val nameError = if (s.name.isBlank()) {
+            appContext.getString(R.string.error_register_name_required)
+        } else {
+            null
+        }
+        val emailTrimmed = s.email.trim()
+        val emailError = when {
+            emailTrimmed.isBlank() -> appContext.getString(R.string.error_register_email_required)
+            !Patterns.EMAIL_ADDRESS.matcher(emailTrimmed).matches() -> {
+                appContext.getString(R.string.error_register_email_invalid)
+            }
+            else -> null
+        }
+        val passwordError = when {
+            s.password.length < MinPasswordLength -> {
+                appContext.getString(R.string.error_register_password_short)
+            }
+            else -> null
+        }
+        val passwordConfirmError = when {
+            s.password != s.passwordConfirm -> {
+                appContext.getString(R.string.error_register_password_mismatch)
+            }
+            else -> null
+        }
+        if (nameError != null || emailError != null || passwordError != null || passwordConfirmError != null) {
+            _uiState.value = s.copy(
+                nameError = nameError,
+                emailError = emailError,
+                passwordError = passwordError,
+                passwordConfirmError = passwordConfirmError
+            )
+            return
+        }
+
+        viewModelScope.launch {
+            _uiState.value = _uiState.value.copy(
+                isLoading = true,
+                nameError = null,
+                emailError = null,
+                passwordError = null,
+                passwordConfirmError = null
+            )
+            try {
+                val result = authService.registerWithEmail(
+                    email = emailTrimmed,
+                    password = s.password,
+                    name = s.name.trim()
+                )
+                if (result.isSuccess) {
+                    _actions.tryEmit(Action.OpenManage)
+                } else {
+                    val message = result.exceptionOrNull()?.message
+                        ?: appContext.getString(R.string.toast_email_auth_failed)
+                    _actions.tryEmit(Action.ShowMessage(message))
+                }
+            } finally {
+                _uiState.value = _uiState.value.copy(isLoading = false)
+            }
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/login/GoogleSignInManager.kt

@@ -0,0 +1,88 @@
+package org.db3.airmq.features.login
+
+import android.app.Activity
+import android.content.Context
+import android.content.ContextWrapper
+import android.util.Log
+import androidx.credentials.CredentialManager
+import androidx.credentials.CustomCredential
+import androidx.credentials.GetCredentialRequest
+import androidx.credentials.exceptions.GetCredentialCancellationException
+import androidx.credentials.exceptions.GetCredentialException
+import androidx.credentials.exceptions.GetCredentialInterruptedException
+import androidx.credentials.exceptions.GetCredentialProviderConfigurationException
+import androidx.credentials.exceptions.NoCredentialException
+import com.google.android.libraries.identity.googleid.GetGoogleIdOption
+import com.google.android.libraries.identity.googleid.GoogleIdTokenCredential
+import com.google.android.libraries.identity.googleid.GoogleIdTokenParsingException
+import kotlin.coroutines.cancellation.CancellationException
+import org.db3.airmq.R
+
+sealed interface GoogleSignInResult {
+    data class Success(val idToken: String) : GoogleSignInResult
+    data object Cancelled : GoogleSignInResult
+    data class Error(val message: String) : GoogleSignInResult
+}
+
+private const val GOOGLE_SIGN_IN_TAG = "GoogleSignIn"
+
+suspend fun launchGoogleSignIn(context: Context): GoogleSignInResult {
+    return try {
+        val activity = context.findActivity()
+        val request = GetCredentialRequest.Builder()
+            .addCredentialOption(
+                GetGoogleIdOption.Builder()
+                    .setServerClientId(context.getString(R.string.default_web_client_id))
+                    .setFilterByAuthorizedAccounts(false)
+                    .build()
+            )
+            .build()
+        val response = CredentialManager.create(context).getCredential(
+            context = activity,
+            request = request
+        )
+        val credential = response.credential
+        if (credential is CustomCredential &&
+            credential.type == GoogleIdTokenCredential.TYPE_GOOGLE_ID_TOKEN_CREDENTIAL
+        ) {
+            GoogleSignInResult.Success(GoogleIdTokenCredential.createFrom(credential.data).idToken)
+        } else {
+            GoogleSignInResult.Error("Unsupported credential type for Google sign-in.")
+        }
+    } catch (error: GetCredentialCancellationException) {
+        logGoogleSignInError(error)
+        GoogleSignInResult.Cancelled
+    } catch (error: GetCredentialInterruptedException) {
+        logGoogleSignInError(error)
+        GoogleSignInResult.Cancelled
+    } catch (error: GetCredentialException) {
+        logGoogleSignInError(error)
+        GoogleSignInResult.Error(context.getString(R.string.toast_oauth_failed))
+    } catch (error: GoogleIdTokenParsingException) {
+        Log.e(GOOGLE_SIGN_IN_TAG, "Google ID token parsing failed", error)
+        GoogleSignInResult.Error(context.getString(R.string.toast_oauth_failed))
+    } catch (e: CancellationException) {
+        throw e
+    } catch (error: Throwable) {
+        GoogleSignInResult.Error(error.message ?: context.getString(R.string.toast_oauth_failed))
+    }
+}
+
+private fun logGoogleSignInError(exception: GetCredentialException) {
+    val message = when (exception) {
+        is GetCredentialCancellationException -> "Google sign-in cancelled by user"
+        is NoCredentialException -> "No Google credential available on device"
+        is GetCredentialProviderConfigurationException -> "Credential provider is not configured correctly"
+        is GetCredentialInterruptedException -> "Credential flow interrupted; try again"
+        else -> "CredentialManager returned an unknown sign-in error"
+    }
+    Log.e(GOOGLE_SIGN_IN_TAG, message, exception)
+}
+
+private tailrec fun Context.findActivity(): Activity {
+    return when (this) {
+        is Activity -> this
+        is ContextWrapper -> baseContext.findActivity()
+        else -> error("Unable to find Activity context for Google sign-in.")
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/login/LoginScreen.kt

@@ -1,14 +1,329 @@
 package org.db3.airmq.features.login
 
+import android.widget.Toast
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
-import org.db3.airmq.features.common.MockScreenScaffold
-import org.db3.airmq.features.common.ScreenAction
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.alpha
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.SpanStyle
+import androidx.compose.ui.text.buildAnnotatedString
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.text.style.TextDecoration
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.text.ClickableText
+import androidx.compose.runtime.collectAsState
+import androidx.compose.ui.geometry.Offset
+import androidx.compose.ui.platform.LocalContext
+import androidx.hilt.navigation.compose.hiltViewModel
+import kotlinx.coroutines.flow.collectLatest
+import org.db3.airmq.R
+import org.db3.airmq.features.common.AirMQOutlinedLightButton
+import org.db3.airmq.features.common.AirMQSocialButton
+import org.db3.airmq.features.login.LoginScreenContract.Action
+import org.db3.airmq.features.login.LoginScreenContract.Event
+import org.db3.airmq.features.login.LoginScreenContract.State
+import org.db3.airmq.ui.theme.AirMQTheme
+
+private val LegacyLoginGradientStart = Color(0xFF449CF5)
+private val LegacyLoginGradientEnd = Color(0xFF5CE4BB)
 
 @Composable
-fun LoginScreen(onLogInToManage: () -> Unit) {
-    MockScreenScaffold(
-        title = "Login",
-        subtitle = "Mock account sign-in screen.",
-        actions = listOf(ScreenAction("Log In to Manage", onLogInToManage))
+fun LoginScreen(
+    onLogInToManage: () -> Unit,
+    onOpenEmailLogin: () -> Unit,
+    viewModel: LoginViewModel = hiltViewModel()
+) {
+    val uiState by viewModel.uiState.collectAsState()
+    val context = LocalContext.current
+    var showContinueAnonymousDialog by rememberSaveable { mutableStateOf(false) }
+
+    LaunchedEffect(viewModel) {
+        viewModel.actions.collectLatest { action ->
+            when (action) {
+                Action.OpenManage -> onLogInToManage()
+                Action.LaunchGoogleSignIn -> {
+                    when (val result = launchGoogleSignIn(context)) {
+                        is GoogleSignInResult.Success -> viewModel.onEvent(Event.GoogleTokenReceived(result.idToken))
+                        GoogleSignInResult.Cancelled -> viewModel.onEvent(Event.GoogleSignInCancelled)
+                        is GoogleSignInResult.Error -> viewModel.onEvent(Event.GoogleSignInFailed(result.message))
+                    }
+                }
+                Action.NavigateToEmailLogin -> onOpenEmailLogin()
+                Action.ShowContinueAnonymousDialog -> showContinueAnonymousDialog = true
+                Action.OpenPrivacyPolicy -> {
+                    Toast.makeText(context, context.getString(R.string.coming_soon), Toast.LENGTH_SHORT).show()
+                }
+                Action.OpenTermsAndConditions -> {
+                    Toast.makeText(context, context.getString(R.string.coming_soon), Toast.LENGTH_SHORT).show()
+                }
+                is Action.ShowMessage -> {
+                    Toast.makeText(context, action.message, Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
+
+    LoginScreenContent(
+        uiState = uiState,
+        onEvent = viewModel::onEvent
+    )
+
+    if (showContinueAnonymousDialog) {
+        AlertDialog(
+            onDismissRequest = {
+                showContinueAnonymousDialog = false
+                viewModel.onEvent(Event.ContinueAnonymousDismissed)
+            },
+            title = {
+                Text(
+                    text = stringResource(id = R.string.dialog_anonym_title),
+                    color = MaterialTheme.colorScheme.onSurface
+                )
+            },
+            text = {
+                Text(
+                    text = stringResource(id = R.string.dialog_anonym_mesage),
+                    color = MaterialTheme.colorScheme.onSurface
+                )
+            },
+            dismissButton = {
+                TextButton(
+                    onClick = {
+                        showContinueAnonymousDialog = false
+                        viewModel.onEvent(Event.ContinueAnonymousDismissed)
+                    }
+                ) {
+                    Text(
+                        text = stringResource(id = R.string.button_sign_in),
+                        color = MaterialTheme.colorScheme.primary
+                    )
+                }
+            },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        showContinueAnonymousDialog = false
+                        viewModel.onEvent(Event.ContinueAnonymousConfirmed)
+                    }
+                ) {
+                    Text(
+                        text = stringResource(id = R.string.button_continue),
+                        color = MaterialTheme.colorScheme.primary
+                    )
+                }
+            }
+        )
+    }
+}
+
+@Composable
+private fun LoginScreenContent(
+    uiState: State,
+    onEvent: (Event) -> Unit
+) {
+    Box(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(
+                brush = Brush.linearGradient(
+                    colorStops = arrayOf(
+                        0.0f to LegacyLoginGradientStart,
+                        0.35f to LegacyLoginGradientStart,
+                        1.0f to LegacyLoginGradientEnd
+                    ),
+                    start = Offset(0f, 0f),
+                    end = Offset(1200f, 1200f)
+                )
+            )
+    ) {
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .statusBarsPadding()
+                .padding(horizontal = 40.dp),
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Spacer(modifier = Modifier.height(56.dp))
+            Text(
+                text = stringResource(id = R.string.text_sign_in),
+                color = Color.White,
+                fontSize = 36.sp,
+                fontWeight = FontWeight.Light,
+                textAlign = TextAlign.Center
+            )
+
+            Spacer(modifier = Modifier.height(40.dp))
+
+            Box(
+                modifier = Modifier
+                    .weight(1f)
+                    .fillMaxWidth(),
+                contentAlignment = Alignment.Center
+            ) {
+                Image(
+                    painter = painterResource(id = R.drawable.airmq_logo),
+                    contentDescription = stringResource(id = R.string.content_airmq_logo),
+                    modifier = Modifier
+                        .size(168.dp)
+                        .alpha(0.54f)
+                )
+                if (uiState.isLoading) {
+                    CircularProgressIndicator(color = Color.White)
+                }
+            }
+
+            Column(
+                modifier = Modifier.fillMaxWidth(),
+                verticalArrangement = Arrangement.spacedBy(16.dp)
+            ) {
+                AirMQSocialButton(
+                    text = stringResource(id = R.string.button_sign_in_google),
+                    leadingIconRes = R.drawable.ic_google,
+                    iconTint = Color.Unspecified,
+                    containerColor = Color.White,
+                    contentColor = Color(0xFF202124),
+                    modifier = Modifier.fillMaxWidth(),
+                    enabled = !uiState.isLoading,
+                    onClick = { onEvent(Event.GoogleClicked) }
+                )
+
+                AirMQSocialButton(
+                    text = stringResource(id = R.string.button_sign_in_email),
+                    leadingIconRes = R.drawable.ic_account,
+                    iconTint = Color.Unspecified,
+                    containerColor = Color.White,
+                    contentColor = Color(0xFF202124),
+                    modifier = Modifier.fillMaxWidth(),
+                    onClick = { onEvent(Event.EmailClicked) }
+                )
+
+                AirMQOutlinedLightButton(
+                    text = stringResource(id = R.string.button_continue_anonym),
+                    modifier = Modifier.fillMaxWidth(),
+                    onClick = { onEvent(Event.ContinueAnonymousClicked) }
+                )
+            }
+
+            Spacer(modifier = Modifier.height(24.dp))
+
+            PrivacyAndTermsFooter(onEvent = onEvent)
+
+            Spacer(modifier = Modifier.height(24.dp))
+        }
+    }
+}
+
+@Composable
+private fun PrivacyAndTermsFooter(onEvent: (Event) -> Unit) {
+    val privacyPolicy = "Privacy Policy"
+    val termsAndConditions = "Terms & conditions"
+    val fullText = stringResource(
+        id = R.string.text_policy_label,
+        privacyPolicy,
+        termsAndConditions
+    )
+
+    val annotatedText = remember(fullText, privacyPolicy, termsAndConditions) {
+        buildAnnotatedString {
+            append(fullText)
+            val privacyStart = fullText.indexOf(privacyPolicy)
+            val termsStart = fullText.indexOf(termsAndConditions)
+
+            if (privacyStart >= 0) {
+                val privacyEnd = privacyStart + privacyPolicy.length
+                addStyle(
+                    style = SpanStyle(
+                        color = Color.White.copy(alpha = 0.85f),
+                        textDecoration = TextDecoration.Underline
+                    ),
+                    start = privacyStart,
+                    end = privacyEnd
+                )
+                addStringAnnotation(
+                    tag = "privacy",
+                    annotation = "privacy",
+                    start = privacyStart,
+                    end = privacyEnd
+                )
+            }
+
+            if (termsStart >= 0) {
+                val termsEnd = termsStart + termsAndConditions.length
+                addStyle(
+                    style = SpanStyle(
+                        color = Color.White.copy(alpha = 0.85f),
+                        textDecoration = TextDecoration.Underline
+                    ),
+                    start = termsStart,
+                    end = termsEnd
+                )
+                addStringAnnotation(
+                    tag = "terms",
+                    annotation = "terms",
+                    start = termsStart,
+                    end = termsEnd
+                )
+            }
+        }
+    }
+
+    ClickableText(
+        text = annotatedText,
+        style = MaterialTheme.typography.bodyMedium.copy(
+            color = Color.White.copy(alpha = 0.63f),
+            textAlign = TextAlign.Center
+        ),
+        modifier = Modifier.fillMaxWidth(),
+        onClick = { offset ->
+            annotatedText.getStringAnnotations(tag = "privacy", start = offset, end = offset)
+                .firstOrNull()?.let {
+                    onEvent(Event.PrivacyPolicyClicked)
+                }
+            annotatedText.getStringAnnotations(tag = "terms", start = offset, end = offset)
+                .firstOrNull()?.let {
+                    onEvent(Event.TermsAndConditionsClicked)
+                }
+        }
     )
 }
+
+@Preview(showBackground = true)
+@Composable
+private fun LoginScreenPreview() {
+    AirMQTheme {
+        LoginScreenContent(
+            uiState = State(),
+            onEvent = {}
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/login/LoginScreenContract.kt

@@ -0,0 +1,31 @@
+package org.db3.airmq.features.login
+
+object LoginScreenContract {
+
+    data class State(
+        val isLoading: Boolean = false
+    )
+
+    sealed interface Action {
+        data object OpenManage : Action
+        data object LaunchGoogleSignIn : Action
+        data object NavigateToEmailLogin : Action
+        data object ShowContinueAnonymousDialog : Action
+        data object OpenPrivacyPolicy : Action
+        data object OpenTermsAndConditions : Action
+        data class ShowMessage(val message: String) : Action
+    }
+
+    sealed interface Event {
+        data object GoogleClicked : Event
+        data class GoogleTokenReceived(val idToken: String) : Event
+        data object GoogleSignInCancelled : Event
+        data class GoogleSignInFailed(val message: String? = null) : Event
+        data object EmailClicked : Event
+        data object ContinueAnonymousClicked : Event
+        data object ContinueAnonymousConfirmed : Event
+        data object ContinueAnonymousDismissed : Event
+        data object PrivacyPolicyClicked : Event
+        data object TermsAndConditionsClicked : Event
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/login/LoginViewModel.kt

@@ -0,0 +1,91 @@
+package org.db3.airmq.features.login
+
+import android.content.Context
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import org.db3.airmq.R
+import org.db3.airmq.features.login.LoginScreenContract.Action
+import org.db3.airmq.features.login.LoginScreenContract.Event
+import org.db3.airmq.features.login.LoginScreenContract.State
+import org.db3.airmq.sdk.auth.AuthService
+import org.db3.airmq.sdk.auth.model.AuthProvider
+
+@HiltViewModel
+class LoginViewModel @Inject constructor(
+    @ApplicationContext private val appContext: Context,
+    private val authService: AuthService
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(State())
+    val uiState: StateFlow<State> = _uiState.asStateFlow()
+
+    private val _actions = MutableSharedFlow<Action>(extraBufferCapacity = 1)
+    val actions: SharedFlow<Action> = _actions.asSharedFlow()
+
+    fun onEvent(event: Event) {
+        when (event) {
+            Event.GoogleClicked -> {
+                if (_uiState.value.isLoading) return
+                _uiState.value = _uiState.value.copy(isLoading = true)
+                _actions.tryEmit(Action.LaunchGoogleSignIn)
+            }
+            is Event.GoogleTokenReceived -> {
+                signInWithGoogle(event.idToken)
+            }
+            is Event.GoogleSignInFailed -> {
+                _uiState.value = _uiState.value.copy(isLoading = false)
+                _actions.tryEmit(
+                    Action.ShowMessage(
+                        event.message ?: appContext.getString(R.string.toast_oauth_failed)
+                    )
+                )
+            }
+            Event.GoogleSignInCancelled -> {
+                _uiState.value = _uiState.value.copy(isLoading = false)
+            }
+            Event.EmailClicked -> {
+                _actions.tryEmit(Action.NavigateToEmailLogin)
+            }
+            Event.ContinueAnonymousClicked -> {
+                _actions.tryEmit(Action.ShowContinueAnonymousDialog)
+            }
+            Event.ContinueAnonymousConfirmed -> {
+                _actions.tryEmit(Action.OpenManage)
+            }
+            Event.ContinueAnonymousDismissed -> Unit
+            Event.PrivacyPolicyClicked -> {
+                _actions.tryEmit(Action.OpenPrivacyPolicy)
+            }
+            Event.TermsAndConditionsClicked -> {
+                _actions.tryEmit(Action.OpenTermsAndConditions)
+            }
+        }
+    }
+
+    private fun signInWithGoogle(idToken: String) {
+        viewModelScope.launch {
+            val signInResult = authService.signIn(provider = AuthProvider.GOOGLE, token = idToken)
+            _uiState.value = _uiState.value.copy(isLoading = false)
+            if (signInResult.isSuccess) {
+                _actions.tryEmit(Action.OpenManage)
+            } else {
+                val message = signInResult.exceptionOrNull()?.message
+                _actions.tryEmit(
+                    Action.ShowMessage(
+                        message ?: appContext.getString(R.string.toast_oauth_failed)
+                    )
+                )
+            }
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/manage/ManageScreen.kt

@@ -1,30 +1,424 @@
 package org.db3.airmq.features.manage
 
+import androidx.compose.foundation.background
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import org.db3.airmq.features.common.MockScreenScaffold
-import org.db3.airmq.features.common.ScreenAction
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.compose.LocalLifecycleOwner
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.hilt.navigation.compose.hiltViewModel
+import kotlinx.coroutines.flow.collectLatest
+import org.db3.airmq.R
+import org.db3.airmq.features.common.AirMQButton
+import org.db3.airmq.features.common.AirMQButtonStyle
+import org.db3.airmq.features.manage.ManageScreenContract.Action
+import org.db3.airmq.features.manage.ManageScreenContract.DeviceItem
+import org.db3.airmq.features.manage.ManageScreenContract.Event
+import org.db3.airmq.features.manage.ManageScreenContract.State
+import org.db3.airmq.ui.theme.AirMQTheme
+import org.db3.airmq.ui.theme.LegacyBackground
+import org.db3.airmq.ui.theme.LegacyNavGradientEnd
+import org.db3.airmq.ui.theme.LegacyNavGradientStart
 
 @Composable
 fun ManageScreen(
-    onOpenDevice: () -> Unit,
+    onOpenDevice: (String) -> Unit,
     onOpenSetup: () -> Unit,
     onOpenSettings: () -> Unit,
     onOpenLogin: () -> Unit,
     onOpenLocation: () -> Unit,
-    onOpenWidgetConstructor: () -> Unit,
-    onBackToDashboard: () -> Unit
+    onOpenAddLocation: () -> Unit,
+    viewModel: ManageViewModel = hiltViewModel()
 ) {
-    MockScreenScaffold(
-        title = "Manage",
-        subtitle = "Bottom-tab equivalent: manage",
-        actions = listOf(
-            ScreenAction("Open Device", onOpenDevice),
-            ScreenAction("Start Setup", onOpenSetup),
-            ScreenAction("Open Settings", onOpenSettings),
-            ScreenAction("Open Login", onOpenLogin),
-            ScreenAction("Select Location", onOpenLocation),
-            ScreenAction("Open Widget Constructor", onOpenWidgetConstructor),
-            ScreenAction("Back to Dashboard", onBackToDashboard)
-        )
+    val uiState by viewModel.uiState.collectAsState()
+    val lifecycleOwner = LocalLifecycleOwner.current
+    DisposableEffect(lifecycleOwner, viewModel) {
+        val observer = LifecycleEventObserver { _, event ->
+            if (event == Lifecycle.Event.ON_RESUME) {
+                viewModel.refreshAuthState()
+            }
+        }
+        lifecycleOwner.lifecycle.addObserver(observer)
+        onDispose { lifecycleOwner.lifecycle.removeObserver(observer) }
+    }
+    LaunchedEffect(viewModel) {
+        viewModel.actions.collectLatest { action ->
+            when (action) {
+                Action.OpenLogin -> onOpenLogin()
+                Action.OpenSettings -> onOpenSettings()
+                Action.OpenSetup -> onOpenSetup()
+                is Action.OpenDevice -> onOpenDevice(action.deviceId)
+                is Action.OpenLocation -> onOpenLocation()
+                is Action.OpenAddLocation -> onOpenAddLocation()
+            }
+        }
+    }
+    ManageScreenContent(
+        uiState = uiState,
+        onEvent = viewModel::onEvent
     )
 }
+
+@Composable
+private fun ManageScreenContent(
+    uiState: State,
+    onEvent: (Event) -> Unit
+) {
+    Scaffold(
+        modifier = Modifier.fillMaxSize(),
+        contentWindowInsets = WindowInsets(0, 0, 0, 0)
+    ) { innerPadding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(innerPadding)
+        ) {
+            ProfileHeader(
+                name = uiState.userName,
+                email = uiState.userEmail,
+                isAnonymous = !uiState.isAuthorized,
+                onSettingsClick = { onEvent(Event.SettingsClicked) }
+            )
+            when (uiState.isAuthorized) {
+                false -> AnonymousContent(
+                    modifier = Modifier.weight(1f),
+                    devicesLabel = uiState.devicesLabel
+                )
+                true -> AuthorizedContent(
+                    modifier = Modifier.weight(1f),
+                    devices = uiState.devices,
+                    onOpenDevice = { onEvent(Event.DeviceClicked(it)) },
+                    onOpenLocation = { onEvent(Event.DeviceLocationClicked(it)) },
+                    onAddLocation = { onEvent.invoke(Event.AddDeviceLocationClicked(it))}
+                )
+            }
+            Spacer(modifier = Modifier.height(8.dp))
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.Center
+            ) {
+                AirMQButton(
+                    text = if (uiState.isAuthorized) stringResource(id = R.string.button_setup)
+                        else stringResource(id = R.string.button_sign_in),
+                    onClick = if (uiState.isAuthorized) { { onEvent(Event.SetupClicked) } }
+                        else { { onEvent(Event.SignInClicked) } },
+                    style = AirMQButtonStyle.Gradient,
+                    leadingIconRes = if (uiState.isAuthorized) null else R.drawable.ic_account,
+                    modifier = Modifier
+                        .fillMaxWidth(0.46f)
+                        .padding(bottom = 16.dp)
+                )
+            }
+        }
+    }
+}
+
+@Composable
+private fun ProfileHeader(
+    name: String,
+    email: String,
+    isAnonymous: Boolean,
+    onSettingsClick: () -> Unit
+) {
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .background(
+                brush = Brush.verticalGradient(
+                    colors = listOf(LegacyNavGradientEnd, LegacyNavGradientStart)
+                )
+            )
+            .statusBarsPadding()
+            .padding(horizontal = 16.dp)
+    ) {
+        Row(
+            modifier = Modifier
+                .fillMaxWidth(),
+            verticalAlignment = Alignment.Top
+        ) {
+            if (isAnonymous) {
+                Image(
+                    painter = painterResource(id = R.drawable.placeholder_avatar_round),
+                    contentDescription = stringResource(id = R.string.content_desc_user_pic),
+                    modifier = Modifier
+                        .padding(top = 24.dp)
+                        .size(96.dp)
+                )
+            } else {
+                Box(
+                    modifier = Modifier
+                        .padding(top = 24.dp)
+                        .size(96.dp)
+                        .background(color = Color.White.copy(alpha = 0.25f), shape = CircleShape),
+                    contentAlignment = Alignment.Center
+                ) {
+                    Text(
+                        text = name.firstOrNull()?.uppercase() ?: "A",
+                        color = Color.White,
+                        style = MaterialTheme.typography.headlineSmall,
+                        fontWeight = FontWeight.Medium
+                    )
+                }
+            }
+            Spacer(modifier = Modifier.width(12.dp))
+            Column(
+                modifier = Modifier
+                    .weight(1f)
+                    .padding(top = 24.dp)
+            ) {
+                Text(
+                    text = name,
+                    color = Color.White,
+                    style = MaterialTheme.typography.titleLarge,
+                    fontWeight = FontWeight.SemiBold
+                )
+                Text(
+                    text = email,
+                    color = Color.White.copy(alpha = 0.8f),
+                    style = MaterialTheme.typography.bodyMedium
+                )
+            }
+            IconButton(
+                onClick = onSettingsClick,
+                modifier = Modifier
+                    .padding(top = 24.dp)
+                    .size(36.dp)
+            ) {
+                Icon(
+                    painter = painterResource(id = R.drawable.ic_settings),
+                    contentDescription = stringResource(id = R.string.content_settings),
+                    tint = Color.White
+                )
+            }
+        }
+        Spacer(modifier = Modifier.height(24.dp))
+    }
+}
+
+@Composable
+private fun AnonymousContent(
+    modifier: Modifier = Modifier,
+    devicesLabel: String
+) {
+    Box(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(horizontal = 16.dp, vertical = 12.dp)
+    ) {
+        Text(
+            text = devicesLabel,
+            style = MaterialTheme.typography.headlineSmall.copy(fontWeight = FontWeight.Light),
+            color = Color(0xFFBDBDBD),
+            modifier = Modifier.align(Alignment.Center)
+        )
+    }
+}
+
+@Composable
+private fun AuthorizedContent(
+    modifier: Modifier = Modifier,
+    devices: List<DeviceItem>,
+    onOpenDevice: (String) -> Unit,
+    onOpenLocation: (String) -> Unit,
+    onAddLocation: (String) -> Unit
+) {
+    Column(
+        modifier = modifier
+            .fillMaxWidth()
+            .background(LegacyBackground)
+    ) {
+        if (devices.isEmpty()) {
+            Box(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .weight(1f)
+                    .padding(horizontal = 16.dp, vertical = 8.dp)
+            ) {
+                Text(
+                    text = stringResource(id = R.string.text_nothing_to_show),
+                    style = MaterialTheme.typography.headlineSmall.copy(fontWeight = FontWeight.Light),
+                    color = Color(0xFF757575),
+                    modifier = Modifier.align(Alignment.Center)
+                )
+            }
+        } else {
+            LazyColumn(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .weight(1f)
+                    .padding(top = 8.dp),
+                verticalArrangement = Arrangement.Top
+            ) {
+                item(key = "header") {
+                    DeviceListHeader()
+                }
+                items(devices, key = { it.id }) { device ->
+                    DeviceRow(
+                        item = device,
+                        onOpenDevice = { onOpenDevice(device.id) },
+                        onOpenLocation = { onOpenLocation(device.id) },
+                        onAddLocation = { onAddLocation(device.id) }
+                    )
+                }
+                item(key = "footer") {
+                    DeviceListFooter()
+                }
+            }
+        }
+    }
+}
+
+private val Black38 = Color(0x61000000)
+
+@Composable
+private fun DeviceListHeader() {
+    Text(
+        text = stringResource(id = R.string.text_your_devices),
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(start = 16.dp, top = 22.dp),
+        fontSize = 14.sp,
+        color = Black38,
+        fontWeight = FontWeight.Medium
+    )
+}
+
+@Composable
+private fun DeviceListFooter() {
+    Spacer(modifier = Modifier.height(72.dp))
+}
+
+@Composable
+private fun DeviceRow(
+    item: DeviceItem,
+    onOpenDevice: () -> Unit,
+    onOpenLocation: () -> Unit,
+    onAddLocation: () -> Unit
+) {
+    val isOnline = item.status.equals(stringResource(id = R.string.map_status_online), ignoreCase = true)
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(72.dp)
+            .clickable(onClick = onOpenDevice)
+            .padding(horizontal = 16.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Image(
+            painter = painterResource(id = R.drawable.ic_chip),
+            contentDescription = stringResource(id = R.string.content_device_icon),
+            modifier = Modifier.size(40.dp)
+        )
+        Spacer(modifier = Modifier.width(16.dp))
+        Column(modifier = Modifier.weight(1f, fill = true)) {
+            Text(
+                text = item.name,
+                fontSize = 16.sp,
+                color = Color.Black
+            )
+            Text(
+                text = item.extra,
+                fontSize = 14.sp,
+                color = Black38
+            )
+        }
+        Spacer(modifier = Modifier.width(16.dp))
+        Image(
+            painter = painterResource(
+                id = if (isOnline) R.drawable.device_chip_online else R.drawable.device_chip_offline
+            ),
+            contentDescription = item.status,
+            modifier = Modifier
+                .align(Alignment.Top)
+                .padding(top = 18.dp)
+        )
+        val trailingIcon = if (item.hasLocation) R.drawable.ic_go_to_location else R.drawable.ic_warning
+        IconButton(
+            onClick = {
+                if (item.hasLocation) {
+                    onOpenLocation.invoke()
+                } else {
+                    onAddLocation.invoke()
+                }
+            },
+            modifier = Modifier.size(48.dp)
+        ) {
+            Icon(
+                painter = painterResource(id = trailingIcon),
+                contentDescription = null,
+                tint = Black38
+            )
+        }
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun ManageScreenAnonymousPreview() {
+    AirMQTheme {
+        ManageScreenContent(
+            uiState = State(
+                isAuthorized = false,
+                userName = "Anonymous user",
+                userEmail = "Your preferences are not being synced, please sign in",
+                devicesLabel = "Sign in to add devices"
+            ),
+            onEvent = {}
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun ManageScreenAuthorizedPreview() {
+    AirMQTheme {
+        ManageScreenContent(
+            uiState = State(
+                isAuthorized = true,
+                userName = "User",
+                userEmail = "user@example.com",
+                devices = listOf(
+                    DeviceItem("1", "AirMQ #1", "mobile", "Online", true),
+                    DeviceItem("2", "AirMQ #2", "mobile", "Offline", false)
+                )
+            ),
+            onEvent = {}
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/manage/ManageScreenContract.kt

@@ -0,0 +1,37 @@
+package org.db3.airmq.features.manage
+
+object ManageScreenContract {
+    data class DeviceItem(
+        val id: String,
+        val name: String,
+        val extra: String,
+        val status: String,
+        val hasLocation: Boolean
+    )
+
+    data class State(
+        val isAuthorized: Boolean = false,
+        val userName: String = "",
+        val userEmail: String = "",
+        val devicesLabel: String = "",
+        val devices: List<DeviceItem> = emptyList()
+    )
+
+    sealed interface Action {
+        data object OpenSettings : Action
+        data object OpenSetup : Action
+        data object OpenLogin : Action
+        data class OpenDevice(val deviceId: String) : Action
+        data class OpenLocation(val deviceId: String) : Action
+        data class OpenAddLocation(val deviceId: String) : Action
+    }
+
+    sealed interface Event {
+        data object SettingsClicked : Event
+        data object SetupClicked : Event
+        data object SignInClicked : Event
+        data class DeviceClicked(val deviceId: String) : Event
+        data class DeviceLocationClicked(val deviceId: String) : Event
+        data class AddDeviceLocationClicked(val deviceId: String) : Event
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/manage/ManageViewModel.kt

@@ -0,0 +1,116 @@
+package org.db3.airmq.features.manage
+
+import android.content.Context
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import org.db3.airmq.R
+import org.db3.airmq.features.device.usecases.GetMyDevicesUseCase
+import org.db3.airmq.features.manage.ManageScreenContract.Action
+import org.db3.airmq.features.manage.ManageScreenContract.DeviceItem
+import org.db3.airmq.features.manage.ManageScreenContract.Event
+import org.db3.airmq.features.manage.ManageScreenContract.State
+import org.db3.airmq.sdk.auth.AuthService
+import org.db3.airmq.sdk.auth.model.User
+import org.db3.airmq.sdk.device.data.remote.DeviceSubscriptionManager
+import org.db3.airmq.sdk.device.domain.OnlineStatus
+
+@HiltViewModel
+class ManageViewModel @Inject constructor(
+    @ApplicationContext private val appContext: Context,
+    private val authService: AuthService,
+    private val getMyDevicesUseCase: GetMyDevicesUseCase,
+    private val subscriptionManager: DeviceSubscriptionManager
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(initialState())
+    val uiState: StateFlow<State> = _uiState.asStateFlow()
+
+    private val _actions = MutableSharedFlow<Action>(extraBufferCapacity = 1)
+    val actions: SharedFlow<Action> = _actions.asSharedFlow()
+
+    init {
+        refreshAuthState()
+        viewModelScope.launch {
+            getMyDevicesUseCase().collect { devices ->
+                val session = authService.getUser()
+                if (session?.isAuthenticated == true) {
+                    val user = session
+                    _uiState.update { state ->
+                        if (state.isAuthorized) {
+                            state.copy(
+                                devices = devices.map { device -> device.toDeviceItem(appContext) }
+                            )
+                        } else state
+                    }
+                }
+            }
+        }
+    }
+
+    fun onEvent(event: Event) {
+        when (event) {
+            Event.SettingsClicked -> _actions.tryEmit(Action.OpenSettings)
+            Event.SetupClicked -> _actions.tryEmit(Action.OpenSetup)
+            Event.SignInClicked -> _actions.tryEmit(Action.OpenLogin)
+            is Event.DeviceClicked -> _actions.tryEmit(Action.OpenDevice(event.deviceId))
+            is Event.DeviceLocationClicked -> _actions.tryEmit(Action.OpenLocation(event.deviceId))
+            is Event.AddDeviceLocationClicked -> _actions.tryEmit(Action.OpenAddLocation(event.deviceId))
+        }
+    }
+
+    private fun initialState(): State = anonymousState()
+
+    fun refreshAuthState() {
+        viewModelScope.launch {
+            val session = authService.getUser()
+            if (session?.isAuthenticated == true) {
+                subscriptionManager.start()
+                _uiState.value = authorizedState(session)
+            } else {
+                subscriptionManager.stop()
+                _uiState.value = anonymousState()
+            }
+        }
+    }
+
+    private fun anonymousState(): State = State(
+        isAuthorized = false,
+        userName = appContext.getString(R.string.text_anonymous_user),
+        userEmail = appContext.getString(R.string.text_please_sign_in),
+        devicesLabel = appContext.getString(R.string.text_sign_in_small)
+    )
+
+    private fun authorizedState(user: User): State = State(
+        isAuthorized = true,
+        userName = user.displayName ?: appContext.getString(R.string.text_anonymous_user),
+        userEmail = user.email ?: "",
+        devicesLabel = "",
+        devices = emptyList()
+    )
+
+    private fun org.db3.airmq.sdk.device.domain.Device.toDeviceItem(context: Context): DeviceItem {
+        val statusText = when (toOnlineStatus()) {
+            OnlineStatus.Online -> context.getString(R.string.map_status_online)
+            OnlineStatus.Offline -> context.getString(R.string.map_status_offline)
+            OnlineStatus.Unknown, OnlineStatus.Stale -> context.getString(R.string.map_status_offline)
+        }
+        return DeviceItem(
+            id = id,
+            name = name,
+            extra = model.displayName,
+            status = statusText,
+            hasLocation = hasLocation()
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/map/MapHeatmapOverlay.kt

@@ -0,0 +1,114 @@
+package org.db3.airmq.features.map
+
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Matrix
+import android.graphics.Paint
+import android.graphics.Point
+import android.graphics.RadialGradient
+import android.graphics.Shader
+import androidx.core.content.ContextCompat
+import androidx.core.graphics.ColorUtils
+import org.db3.airmq.R
+import org.osmdroid.util.GeoPoint
+import org.osmdroid.views.MapView
+import org.osmdroid.views.overlay.Overlay
+
+/**
+ * OSMDroid overlay that draws heat halos under markers, projected on every frame so pan/zoom
+ * stays aligned with the map (unlike a cached screen bitmap that only updates after debounce).
+ * Mirrors legacy Google Maps heatmap: PM2.5-style dust tiers, ~40dp radius, ~0.4 opacity.
+ */
+private const val HeatmapRadiusDp = 40f
+private const val HeatmapOpacity = 0.4f
+
+private val heatmapTierColorOrder = intArrayOf(
+    R.color.sensorGreen,
+    R.color.sensorYellow,
+    R.color.sensorOrange,
+    R.color.sensorRed,
+    R.color.sensorPink,
+    R.color.sensorPurple
+)
+
+private class HeatmapTierBatch(
+    val shader: RadialGradient,
+    val points: List<GeoPoint>
+)
+
+/**
+ * One [RadialGradient] per tier (centered at origin); [Matrix] translates it each draw for low GC during pan.
+ */
+class MapHeatmapOverlay private constructor(
+    private val radiusPx: Float,
+    private val batches: List<HeatmapTierBatch>
+) : Overlay() {
+
+    private val paint = Paint(Paint.ANTI_ALIAS_FLAG)
+    private val shaderMatrix = Matrix()
+    private val scratch = Point()
+
+    override fun draw(canvas: Canvas, mapView: MapView, shadow: Boolean) {
+        if (shadow) return
+        val projection = mapView.projection
+        for (batch in batches) {
+            paint.shader = batch.shader
+            for (geo in batch.points) {
+                projection.toPixels(geo, scratch)
+                val cx = scratch.x.toFloat()
+                val cy = scratch.y.toFloat()
+                shaderMatrix.reset()
+                shaderMatrix.setTranslate(cx, cy)
+                batch.shader.setLocalMatrix(shaderMatrix)
+                canvas.drawCircle(cx, cy, radiusPx, paint)
+            }
+        }
+        paint.shader = null
+    }
+
+    /** Kept for [removeHeatmapOverlaysRecycle]; no bitmap to recycle anymore. */
+    fun recycleBitmap() {}
+
+    companion object {
+        fun create(mapView: MapView, items: List<MapMarker>): MapHeatmapOverlay? {
+            val byTier = LinkedHashMap<Int, MutableList<GeoPoint>>()
+            for (res in heatmapTierColorOrder) {
+                byTier[res] = ArrayList()
+            }
+            for (item in items) {
+                val colorRes = MapMarkerStyle.heatmapTierColorRes(item) ?: continue
+                byTier.getOrPut(colorRes) { ArrayList() }
+                    .add(GeoPoint(item.latitude, item.longitude))
+            }
+
+            val density = mapView.context.resources.displayMetrics.density
+            val radiusPx = HeatmapRadiusDp * density
+            val centerAlpha = (255 * HeatmapOpacity).toInt().coerceIn(0, 255)
+            val ctx = mapView.context
+
+            val batches = ArrayList<HeatmapTierBatch>()
+            for (colorRes in heatmapTierColorOrder) {
+                val points = byTier[colorRes] ?: continue
+                if (points.isEmpty()) continue
+                val rgb = ContextCompat.getColor(ctx, colorRes)
+                val centerColor = ColorUtils.setAlphaComponent(rgb, centerAlpha)
+                val shader = RadialGradient(
+                    0f,
+                    0f,
+                    radiusPx,
+                    centerColor,
+                    Color.TRANSPARENT,
+                    Shader.TileMode.CLAMP
+                )
+                batches.add(HeatmapTierBatch(shader, points))
+            }
+            if (batches.isEmpty()) return null
+            return MapHeatmapOverlay(radiusPx, batches)
+        }
+    }
+}
+
+internal fun MapView.removeHeatmapOverlaysRecycle() {
+    overlays.filterIsInstance<MapHeatmapOverlay>().forEach { it.recycleBitmap() }
+    overlays.removeAll { it is MapHeatmapOverlay }
+}

app/src/main/kotlin/org/db3/airmq/features/map/MapMarker.kt

@@ -0,0 +1,15 @@
+package org.db3.airmq.features.map
+
+import org.db3.airmq.features.map.MapScreenContract.SensorType
+
+data class MapMarker(
+    val id: String,
+    val title: String,
+    val city: String?,
+    val latitude: Double,
+    val longitude: Double,
+    val isOnline: Boolean,
+    val sensorType: SensorType,
+    val value: Double?,
+    val isOwned: Boolean
+)

app/src/main/kotlin/org/db3/airmq/features/map/MapMarkerClustering.kt

@@ -0,0 +1,123 @@
+package org.db3.airmq.features.map
+
+import android.graphics.Point
+import org.db3.airmq.features.map.MapScreenContract.SensorType
+import org.osmdroid.util.GeoPoint
+import org.osmdroid.views.Projection
+import kotlin.math.hypot
+
+sealed class MapMarkerDisplay {
+    data class Single(val marker: MapMarker) : MapMarkerDisplay()
+    data class Cluster(
+        val members: List<MapMarker>,
+        val latitude: Double,
+        val longitude: Double
+    ) : MapMarkerDisplay()
+}
+
+object MapMarkerClustering {
+
+    /**
+     * @param clusterDistancePx screen distance below which markers merge (similar scale to maps-utils defaults).
+     */
+    fun buildDisplayItems(
+        items: List<MapMarker>,
+        projection: Projection?,
+        clusterDistancePx: Float,
+        clusterEnabled: Boolean
+    ): List<MapMarkerDisplay> {
+        if (items.isEmpty()) return emptyList()
+        if (!clusterEnabled || items.size == 1 || projection == null) {
+            return items.map { MapMarkerDisplay.Single(it) }
+        }
+
+        val threshold = clusterDistancePx.coerceAtLeast(1f)
+        val cellSize = threshold.toInt().coerceAtLeast(1)
+        val pixels = ArrayList<Point>(items.size)
+        val cellMap = mutableMapOf<Pair<Int, Int>, MutableList<Int>>()
+
+        for (i in items.indices) {
+            val p = Point()
+            projection.toPixels(GeoPoint(items[i].latitude, items[i].longitude), p)
+            pixels.add(p)
+            val cx = p.x.floorDiv(cellSize)
+            val cy = p.y.floorDiv(cellSize)
+            cellMap.getOrPut(cx to cy) { mutableListOf() }.add(i)
+        }
+
+        val uf = UnionFind(items.size)
+        for (i in items.indices) {
+            val pi = pixels[i]
+            val cx = pi.x.floorDiv(cellSize)
+            val cy = pi.y.floorDiv(cellSize)
+            for (dx in -1..1) {
+                for (dy in -1..1) {
+                    val neighbors = cellMap[cx + dx to cy + dy] ?: continue
+                    for (j in neighbors) {
+                        if (j <= i) continue
+                        val pj = pixels[j]
+                        val dist = hypot(
+                            (pi.x - pj.x).toDouble(),
+                            (pi.y - pj.y).toDouble()
+                        )
+                        if (dist <= threshold) {
+                            uf.union(i, j)
+                        }
+                    }
+                }
+            }
+        }
+
+        val groups = mutableMapOf<Int, MutableList<Int>>()
+        for (i in items.indices) {
+            val root = uf.find(i)
+            groups.getOrPut(root) { mutableListOf() }.add(i)
+        }
+
+        return groups.values.map { indices ->
+            val members = indices.map { items[it] }
+            if (members.size == 1) {
+                MapMarkerDisplay.Single(members.first())
+            } else {
+                val lat = members.map { it.latitude }.average()
+                val lon = members.map { it.longitude }.average()
+                MapMarkerDisplay.Cluster(members, lat, lon)
+            }
+        }
+    }
+
+    /** Mode of defined values and last member's sensor type (matches old MarkerClusterRenderer loop). */
+    fun clusterStyleInputs(members: List<MapMarker>): Pair<Double?, SensorType> {
+        val lastSensor = members.last().sensorType
+        val values = members.mapNotNull { it.value }
+        if (values.isEmpty()) return null to lastSensor
+        val mode = values.groupingBy { it }.eachCount().maxBy { it.value }.key
+        return mode to lastSensor
+    }
+
+    private class UnionFind(n: Int) {
+        private val parent = IntArray(n) { it }
+        private val rank = IntArray(n)
+
+        fun find(i: Int): Int {
+            var x = i
+            while (parent[x] != x) {
+                parent[x] = parent[parent[x]]
+                x = parent[x]
+            }
+            return x
+        }
+
+        fun union(a: Int, b: Int) {
+            var ra = find(a)
+            var rb = find(b)
+            if (ra == rb) return
+            if (rank[ra] < rank[rb]) {
+                parent[ra] = rb
+            } else {
+                parent[rb] = ra
+                if (rank[ra] == rank[rb]) rank[ra]++
+            }
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/map/MapMarkerStyle.kt

@@ -0,0 +1,56 @@
+package org.db3.airmq.features.map
+
+import androidx.annotation.ColorRes
+import org.db3.airmq.R
+import org.db3.airmq.features.map.MapScreenContract.SensorType
+import java.util.Locale
+import kotlin.math.roundToInt
+
+object MapMarkerStyle {
+
+    fun formatValue(value: Double?, sensorType: SensorType): String {
+        if (value == null) return "--"
+        return when (sensorType) {
+            SensorType.DUST -> value.roundToInt().toString()
+            SensorType.RADIOACTIVITY -> formatAdaptive(value)
+        }
+    }
+
+    /**
+     * Color tier for heatmap halos; null when there is no reading (excluded from heatmap).
+     */
+    @ColorRes
+    fun heatmapTierColorRes(marker: MapMarker): Int? {
+        if (marker.value == null) return null
+        return valueColorRes(marker.value, marker.sensorType)
+    }
+
+    @ColorRes
+    fun valueColorRes(value: Double?, sensorType: SensorType): Int {
+        if (value == null) return R.color.colorGrey
+        return when (sensorType) {
+            SensorType.DUST -> when {
+                value <= 12.0 -> R.color.sensorGreen
+                value <= 35.4 -> R.color.sensorYellow
+                value <= 55.4 -> R.color.sensorOrange
+                value <= 150.4 -> R.color.sensorRed
+                value <= 250.4 -> R.color.sensorPink
+                else -> R.color.sensorPurple
+            }
+            SensorType.RADIOACTIVITY -> R.color.sensorGreen
+        }
+    }
+
+    private fun formatAdaptive(value: Double): String {
+        val decimals = when {
+            value > 10.0 -> 0
+            value > 1.0 -> 1
+            else -> 2
+        }
+        return if (decimals == 0) {
+            value.roundToInt().toString()
+        } else {
+            String.format(Locale.US, "%.${decimals}f", value)
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/map/MapScreen.kt

@@ -1,20 +1,602 @@
 package org.db3.airmq.features.map
 
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.graphics.drawable.BitmapDrawable
+import android.os.Handler
+import android.os.Looper
+import android.view.ViewTreeObserver
+import android.view.LayoutInflater
+import android.widget.Toast
+import android.widget.ImageView
+import android.widget.TextView
+import java.util.concurrent.atomic.AtomicBoolean
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.foundation.layout.size
 import androidx.compose.runtime.Composable
-import org.db3.airmq.features.common.MockScreenScaffold
-import org.db3.airmq.features.common.ScreenAction
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberUpdatedState
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.viewinterop.AndroidView
+import androidx.core.content.ContextCompat
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.compose.LocalLifecycleOwner
+import kotlinx.coroutines.flow.collectLatest
+import org.db3.airmq.R
+import org.db3.airmq.features.common.metric.SensorType as MetricSensorType
+import org.db3.airmq.features.dashboard.DashboardChartMapper
+import org.db3.airmq.features.map.MapScreenContract.Action
+import org.db3.airmq.features.map.MapScreenContract.DevicePanelState
+import org.db3.airmq.features.map.MapScreenContract.DeviceSensorType
+import org.db3.airmq.features.map.MapScreenContract.Event
+import org.db3.airmq.features.map.MapScreenContract.SearchPanelState
+import org.db3.airmq.features.map.MapScreenContract.SearchResult
+import org.db3.airmq.features.map.MapScreenContract.SensorType
+import org.db3.airmq.features.map.MapScreenContract.State
+import org.db3.airmq.features.map.MapScreenContract.TimeRange
+import org.db3.airmq.ui.theme.AirMQTheme
+import org.osmdroid.config.Configuration
+import org.osmdroid.events.MapListener
+import org.osmdroid.events.ScrollEvent
+import org.osmdroid.events.ZoomEvent
+import org.osmdroid.tileprovider.tilesource.TileSourceFactory
+import org.osmdroid.util.BoundingBox
+import org.osmdroid.util.GeoPoint
+import org.osmdroid.views.CustomZoomButtonsController
+import org.osmdroid.views.MapView
+import org.osmdroid.views.overlay.Marker
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ModalBottomSheet
+import androidx.compose.material3.rememberModalBottomSheetState
+import androidx.core.graphics.createBitmap
+import androidx.core.graphics.drawable.toDrawable
 
 @Composable
 fun MapScreen(
-    onOpenDevice: () -> Unit,
-    onBackToDashboard: () -> Unit
+    viewModel: MapViewModel = hiltViewModel()
 ) {
-    MockScreenScaffold(
-        title = "Map",
-        subtitle = "Bottom-tab equivalent: map",
-        actions = listOf(
-            ScreenAction("Open Device", onOpenDevice),
-            ScreenAction("Back to Dashboard", onBackToDashboard)
-        )
+    val uiState by viewModel.uiState.collectAsState()
+    val context = LocalContext.current
+    LaunchedEffect(viewModel) {
+        viewModel.actions.collectLatest { action ->
+            when (action) {
+                is Action.ShowToast -> {
+                    Toast.makeText(context, action.message, Toast.LENGTH_SHORT).show()
+                }
+                is Action.OpenDeviceRequested -> {
+                    // Stub for future navigation integration.
+                    Toast.makeText(
+                        context,
+                        context.getString(R.string.map_open_device_not_wired, action.deviceId),
+                        Toast.LENGTH_SHORT
+                    ).show()
+                }
+            }
+        }
+    }
+
+    MapScreenContent(
+        uiState = uiState,
+        onEvent = viewModel::onEvent,
+        showMap = true
     )
 }
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun MapScreenContent(
+    uiState: State,
+    onEvent: (Event) -> Unit,
+    showMap: Boolean
+) {
+    val context = LocalContext.current
+    val centerOnMarker = uiState.selectedMarkerId?.let { id ->
+        uiState.items.find { it.id == id }
+    }
+    val sheetHeightFraction = if (uiState.devicePanelState != null) 0.5f else 0f
+
+    Box(modifier = Modifier.fillMaxSize()) {
+        if (showMap) {
+            AirMQMap(
+                items = uiState.items,
+                onMarkerClick = { onEvent(Event.MarkerClicked(it)) },
+                centerOnMarker = centerOnMarker,
+                sheetHeightFraction = sheetHeightFraction,
+                clusterEnabled = true,
+                modifier = Modifier.fillMaxSize()
+            )
+        } else {
+            Box(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .background(Color(0xFFE8F1E5))
+            )
+        }
+
+        MapTopControls(
+            selectedSensor = uiState.selectedTopSensor,
+            onSensorSelected = { onEvent(Event.TopSensorSelected(it)) },
+            onHelpClick = { onEvent(Event.HelpClicked) },
+            modifier = Modifier
+                .align(Alignment.TopEnd)
+                .statusBarsPadding()
+                .padding(top = 20.dp, end = 16.dp)
+        )
+
+        if (uiState.showHelpDialog) {
+            WhatDoesThisMeanDialog(onDismiss = { onEvent(Event.HelpDialogDismissed) })
+        }
+
+        if (uiState.searchPanelState == null && uiState.devicePanelState == null) {
+            MapFloatingActions(
+                onSearchClick = { onEvent(Event.SearchButtonClicked) },
+                onMyLocationClick = { onEvent(Event.MyLocationClicked) },
+                modifier = Modifier
+                    .align(Alignment.BottomEnd)
+                    .padding(bottom = 20.dp, end = 16.dp)
+            )
+        }
+
+        uiState.searchPanelState?.let { searchPanelState ->
+            MapSearchOverlay(
+                query = searchPanelState.query,
+                results = searchPanelState.results,
+                onQueryChanged = { onEvent(Event.SearchQueryChanged(it)) },
+                onClose = { onEvent(Event.SearchClosed) },
+                onResultClick = { onEvent(Event.SearchResultClicked(it.id)) },
+                modifier = Modifier.fillMaxSize()
+            )
+        }
+
+        uiState.devicePanelState?.let { panelData ->
+            val sheetState = rememberModalBottomSheetState(skipPartiallyExpanded = true)
+            ModalBottomSheet(
+                onDismissRequest = { onEvent(Event.DevicePanelClosed) },
+                sheetState = sheetState
+            ) {
+                MapDevicePanelContent(
+                    data = panelData,
+                    onOpenDevice = { onEvent(Event.DeviceOpenClicked) },
+                    onRangeSelected = { onEvent(Event.TimeRangeSelected(it)) },
+                    onDateBack = { onEvent(Event.DateBackClicked) },
+                    onDateForward = { onEvent(Event.DateForwardClicked) },
+                    onSensorSelected = { onEvent(Event.DeviceSensorSelected(it)) }
+                )
+            }
+        }
+
+        if (uiState.isLoading) {
+            Box(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .background(Color.Black.copy(alpha = 0.2f)),
+                contentAlignment = Alignment.Center
+            ) {
+                CircularProgressIndicator(modifier = Modifier.size(40.dp))
+            }
+        }
+
+    }
+}
+
+private const val MapClusterDebounceMs = 150L
+/** Max on-screen gap (in dp) for two markers to merge; lower = less aggressive clustering. */
+private const val MapClusterDistanceDp = 48f
+private const val MapClusterZoomPaddingPx = 64
+
+@Composable
+private fun AirMQMap(
+    items: List<MapMarker>,
+    onMarkerClick: (String) -> Unit,
+    centerOnMarker: MapMarker? = null,
+    sheetHeightFraction: Float = 0f,
+    clusterEnabled: Boolean = true,
+    modifier: Modifier = Modifier
+) {
+    val context = LocalContext.current
+    val lifecycleOwner = LocalLifecycleOwner.current
+
+    val latestItems = rememberUpdatedState(items)
+    val latestOnMarkerClick = rememberUpdatedState(onMarkerClick)
+    val latestClusterEnabled = rememberUpdatedState(clusterEnabled)
+    val latestCenterOnMarker = rememberUpdatedState(centerOnMarker)
+
+    val initialCameraDone = remember { AtomicBoolean(false) }
+
+    val mapView = remember {
+        Configuration.getInstance().userAgentValue = context.packageName
+        MapView(context).apply {
+            setTileSource(TileSourceFactory.MAPNIK)
+            setMultiTouchControls(true)
+            zoomController.setVisibility(CustomZoomButtonsController.Visibility.NEVER)
+            controller.setZoom(7.0)
+            controller.setCenter(GeoPoint(53.7098, 27.9534))
+        }
+    }
+
+    val handler = remember { Handler(Looper.getMainLooper()) }
+    val debouncedRebuild = remember(mapView) {
+        Runnable {
+            rebuildAirMqMapOverlays(
+                map = mapView,
+                items = latestItems.value,
+                onMarkerClick = latestOnMarkerClick.value,
+                clusterEnabled = latestClusterEnabled.value,
+                centerOnMarker = latestCenterOnMarker.value,
+                initialCameraDone = initialCameraDone
+            )
+        }
+    }
+
+    DisposableEffect(lifecycleOwner, mapView) {
+        val observer = LifecycleEventObserver { _, event ->
+            when (event) {
+                Lifecycle.Event.ON_RESUME -> mapView.onResume()
+                Lifecycle.Event.ON_PAUSE -> mapView.onPause()
+                else -> Unit
+            }
+        }
+        lifecycleOwner.lifecycle.addObserver(observer)
+        onDispose {
+            lifecycleOwner.lifecycle.removeObserver(observer)
+            mapView.onDetach()
+        }
+    }
+
+    DisposableEffect(mapView, debouncedRebuild) {
+        val listener = object : MapListener {
+            override fun onScroll(event: ScrollEvent?): Boolean {
+                scheduleMapClusterRebuildDebounced(handler, debouncedRebuild)
+                return false
+            }
+
+            override fun onZoom(event: ZoomEvent?): Boolean {
+                scheduleMapClusterRebuildDebounced(handler, debouncedRebuild)
+                return false
+            }
+        }
+        mapView.addMapListener(listener)
+        onDispose {
+            mapView.removeMapListener(listener)
+            handler.removeCallbacks(debouncedRebuild)
+        }
+    }
+
+    val mapAnimationSpeedMs = 200L
+    LaunchedEffect(centerOnMarker, sheetHeightFraction) {
+        centerOnMarker?.let { marker ->
+            val markerGeo = GeoPoint(marker.latitude, marker.longitude)
+            val zoomLevel = 15.5
+            if (sheetHeightFraction > 0f) {
+                mapView.post {
+                    val height = mapView.height
+                    val width = mapView.width
+                    if (height > 0 && width > 0) {
+                        val sheetHeightPx = (height * sheetHeightFraction).toInt()
+                        val offsetCenterY = height / 2 + sheetHeightPx / 2
+                        val projection = mapView.projection
+                        val offsetGeo = projection.fromPixels(width / 2, offsetCenterY)
+                        mapView.controller.animateTo(offsetGeo, zoomLevel, mapAnimationSpeedMs)
+                    }
+                }
+            } else {
+                mapView.controller.animateTo(markerGeo, zoomLevel, mapAnimationSpeedMs)
+            }
+        }
+    }
+
+    AndroidView(
+        modifier = modifier.fillMaxSize(),
+        factory = { mapView },
+        update = { map ->
+            map.post {
+                rebuildAirMqMapOverlays(
+                    map = map,
+                    items = latestItems.value,
+                    onMarkerClick = latestOnMarkerClick.value,
+                    clusterEnabled = latestClusterEnabled.value,
+                    centerOnMarker = latestCenterOnMarker.value,
+                    initialCameraDone = initialCameraDone
+                )
+            }
+        }
+    )
+}
+
+private fun scheduleMapClusterRebuildDebounced(
+    handler: Handler,
+    runnable: Runnable,
+    debounceMs: Long = MapClusterDebounceMs
+) {
+    handler.removeCallbacks(runnable)
+    handler.postDelayed(runnable, debounceMs)
+}
+
+private fun rebuildAirMqMapOverlays(
+    map: MapView,
+    items: List<MapMarker>,
+    onMarkerClick: (String) -> Unit,
+    clusterEnabled: Boolean,
+    centerOnMarker: MapMarker?,
+    initialCameraDone: AtomicBoolean
+) {
+    if (items.isEmpty()) {
+        map.removeHeatmapOverlaysRecycle()
+        map.overlays.removeAll { it is Marker }
+        initialCameraDone.set(false)
+        map.invalidate()
+        return
+    }
+
+    val density = map.context.resources.displayMetrics.density
+    val baseClusterPx = MapClusterDistanceDp * density
+    val zoom = map.zoomLevelDouble
+    // Zoomed in: require markers to overlap more on screen before merging (less aggressive).
+    val zoomScale = ((18.5 - zoom) / 11.0).coerceIn(0.38, 1.0).toFloat()
+    val clusterDistancePx = (baseClusterPx * zoomScale).coerceAtLeast(18f * density)
+    if (map.width <= 0 || map.height <= 0) {
+        // Compose AndroidView often invokes update before the MapView is measured; one-shot post
+        // can still see 0×0 and then nothing retriggers rebuild until the user pans the map.
+        val vto = map.viewTreeObserver
+        if (!vto.isAlive) {
+            map.post {
+                rebuildAirMqMapOverlays(
+                    map,
+                    items,
+                    onMarkerClick,
+                    clusterEnabled,
+                    centerOnMarker,
+                    initialCameraDone
+                )
+            }
+            return
+        }
+        val listener = object : ViewTreeObserver.OnGlobalLayoutListener {
+            override fun onGlobalLayout() {
+                if (map.width <= 0 || map.height <= 0) return
+                map.viewTreeObserver.removeOnGlobalLayoutListener(this)
+                rebuildAirMqMapOverlays(
+                    map,
+                    items,
+                    onMarkerClick,
+                    clusterEnabled,
+                    centerOnMarker,
+                    initialCameraDone
+                )
+            }
+        }
+        vto.addOnGlobalLayoutListener(listener)
+        return
+    }
+
+    val ctx = map.context
+    map.removeHeatmapOverlaysRecycle()
+    map.overlays.removeAll { it is Marker }
+
+    MapHeatmapOverlay.create(map, items)?.let { map.overlays.add(it) }
+
+    val displayItems = MapMarkerClustering.buildDisplayItems(
+        items = items,
+        projection = map.projection,
+        clusterDistancePx = clusterDistancePx,
+        clusterEnabled = clusterEnabled
+    )
+
+    for (entry in displayItems) {
+        when (entry) {
+            is MapMarkerDisplay.Single -> {
+                val item = entry.marker
+                val marker = Marker(map).apply {
+                    position = GeoPoint(item.latitude, item.longitude)
+                    title = listOfNotNull(item.title, item.city).joinToString(" - ")
+                    subDescription = if (item.isOnline) {
+                        ctx.getString(R.string.map_status_online)
+                    } else {
+                        ctx.getString(R.string.map_status_offline)
+                    }
+                    setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_CENTER)
+                    icon = createMarkerIcon(map, item)
+                    setOnMarkerClickListener { _, _ ->
+                        onMarkerClick(item.id)
+                        true
+                    }
+                }
+                map.overlays.add(marker)
+            }
+
+            is MapMarkerDisplay.Cluster -> {
+                val cluster = entry
+                val marker = Marker(map).apply {
+                    position = GeoPoint(cluster.latitude, cluster.longitude)
+                    title = ctx.getString(R.string.map_cluster_marker_title, cluster.members.size)
+                    subDescription = ""
+                    setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_CENTER)
+                    icon = createClusterMarkerIcon(map, cluster.members.size, cluster.members)
+                    setOnMarkerClickListener { _, _ ->
+                        val geoPoints = cluster.members.map { GeoPoint(it.latitude, it.longitude) }
+                        val box = BoundingBox.fromGeoPoints(geoPoints)
+                        map.zoomToBoundingBox(box, true, MapClusterZoomPaddingPx)
+                        true
+                    }
+                }
+                map.overlays.add(marker)
+            }
+        }
+    }
+
+    if (!initialCameraDone.get() && centerOnMarker == null && items.isNotEmpty()) {
+        initialCameraDone.set(true)
+        map.controller.animateTo(
+            GeoPoint(items.first().latitude, items.first().longitude),
+            map.zoomLevelDouble,
+            200L
+        )
+    }
+
+    map.invalidate()
+}
+
+private fun createMarkerIcon(mapView: MapView, item: MapMarker): BitmapDrawable {
+    val context = mapView.context
+    val iconView = LayoutInflater.from(context).inflate(R.layout.view_map_marker, null, false)
+    val markerBorder = iconView.findViewById<android.view.View>(R.id.marker_border)
+    val markerCenter = iconView.findViewById<android.view.View>(R.id.marker_center)
+    val markerText = iconView.findViewById<TextView>(R.id.marker_text)
+    val markerShade = iconView.findViewById<android.view.View>(R.id.marker_image_shade)
+    val markerImage = iconView.findViewById<ImageView>(R.id.marker_image)
+
+    val hasValue = item.value != null
+    val isNoValueStyled = !hasValue
+    val colorRes = if (isNoValueStyled) {
+        R.color.colorGrey
+    } else {
+        MapMarkerStyle.valueColorRes(item.value, item.sensorType)
+    }
+    val markerColor = ContextCompat.getColor(context, colorRes)
+    val centerColor = if (isNoValueStyled) R.color.colorGrey else R.color.white
+    markerBorder.backgroundTintList = android.content.res.ColorStateList.valueOf(markerColor)
+    markerCenter.backgroundTintList =
+        android.content.res.ColorStateList.valueOf(ContextCompat.getColor(context, centerColor))
+
+    markerText.text = MapMarkerStyle.formatValue(item.value, item.sensorType)
+    if (item.isOwned && !isNoValueStyled) {
+        markerImage.setImageResource(R.drawable.ic_marker_user)
+        markerImage.visibility = android.view.View.VISIBLE
+        markerShade.visibility = android.view.View.VISIBLE
+        markerText.setTextColor(ContextCompat.getColor(context, R.color.white))
+    } else {
+        markerImage.visibility = android.view.View.GONE
+        markerShade.visibility = android.view.View.GONE
+        markerText.setTextColor(
+            ContextCompat.getColor(
+                context,
+                if (isNoValueStyled) R.color.white else colorRes
+            )
+        )
+    }
+
+    iconView.measure(
+        android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View.MeasureSpec.UNSPECIFIED),
+        android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View.MeasureSpec.UNSPECIFIED)
+    )
+    iconView.layout(0, 0, iconView.measuredWidth, iconView.measuredHeight)
+    val bitmap = createBitmap(iconView.measuredWidth, iconView.measuredHeight)
+    iconView.draw(Canvas(bitmap))
+    return bitmap.toDrawable(context.resources)
+}
+
+private fun createClusterMarkerIcon(mapView: MapView, count: Int, members: List<MapMarker>): BitmapDrawable {
+    val context = mapView.context
+    val (modeValue, sensorForStyle) = MapMarkerClustering.clusterStyleInputs(members)
+    val iconView = LayoutInflater.from(context).inflate(R.layout.view_map_marker_cluster, null, false)
+    val background = iconView.findViewById<android.view.View>(R.id.cluster_background)
+    val text = iconView.findViewById<TextView>(R.id.cluster_text)
+    text.text = context.getString(R.string.map_cluster_count_label, count)
+    val colorRes = if (modeValue == null) {
+        R.color.colorGrey
+    } else {
+        MapMarkerStyle.valueColorRes(modeValue, sensorForStyle)
+    }
+    background.backgroundTintList =
+        android.content.res.ColorStateList.valueOf(ContextCompat.getColor(context, colorRes))
+    iconView.measure(
+        android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View.MeasureSpec.UNSPECIFIED),
+        android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View.MeasureSpec.UNSPECIFIED)
+    )
+    iconView.layout(0, 0, iconView.measuredWidth, iconView.measuredHeight)
+    val bitmap = createBitmap(iconView.measuredWidth, iconView.measuredHeight)
+    iconView.draw(Canvas(bitmap))
+    return bitmap.toDrawable(context.resources)
+}
+
+@Preview(showBackground = true, showSystemUi = true)
+@Composable
+private fun PreviewMapScreenDefault() {
+    AirMQTheme {
+        MapScreenContent(
+            uiState = State(
+                selectedTopSensor = SensorType.DUST,
+                items = listOf(
+                    MapMarker(
+                        id = "1",
+                        title = "AirMQ #1",
+                        city = "Minsk",
+                        latitude = 53.9,
+                        longitude = 27.56,
+                        isOnline = true,
+                        sensorType = SensorType.DUST,
+                        value = 12.0,
+                        isOwned = false
+                    )
+                )
+            ),
+            onEvent = {},
+            showMap = false
+        )
+    }
+}
+
+@Preview(showBackground = true, showSystemUi = true)
+@Composable
+private fun PreviewMapScreenSearch() {
+    AirMQTheme {
+        MapScreenContent(
+            uiState = State(
+                selectedTopSensor = SensorType.RADIOACTIVITY,
+                searchPanelState = SearchPanelState(
+                    query = "Minsk",
+                    results = listOf(
+                        SearchResult(id = "1", title = "AirMQ #42", subtitle = "Minsk"),
+                        SearchResult(id = "2", title = "AirMQ #91", subtitle = "Salihorsk")
+                    )
+                )
+            ),
+            onEvent = {},
+            showMap = false
+        )
+    }
+}
+
+@Preview(showBackground = true, showSystemUi = true)
+@Composable
+private fun PreviewMapScreenDevicePanel() {
+    AirMQTheme {
+        MapScreenContent(
+            uiState = State(
+                selectedTopSensor = SensorType.DUST,
+                devicePanelState = DevicePanelState(
+                    id = "42",
+                    name = "AirMQ #42",
+                    status = "Online",
+                    selectedRange = TimeRange.DAY,
+                    displayedDateRange = "Today",
+                    selectedSensor = DeviceSensorType.DUST,
+                    chartDataset = DashboardChartMapper.chartDataset(
+                        DashboardChartMapper.previewStaticRows(),
+                        MetricSensorType.DUST
+                    ),
+                    isChartLoading = false
+                )
+            ),
+            onEvent = {},
+            showMap = false
+        )
+    }
+}
+

app/src/main/kotlin/org/db3/airmq/features/map/MapScreenContract.kt

@@ -0,0 +1,88 @@
+package org.db3.airmq.features.map
+
+import org.db3.airmq.features.common.chart.ChartDataset
+
+object MapScreenContract {
+
+    enum class SensorType {
+        DUST,
+        RADIOACTIVITY
+    }
+
+    enum class DeviceSensorType {
+        TEMPERATURE,
+        DUST,
+        RADIOACTIVITY
+    }
+
+    enum class TimeRange {
+        HOUR,
+        DAY,
+        WEEK,
+        MONTH
+    }
+
+    data class SearchResult(
+        val id: String,
+        val title: String,
+        val subtitle: String
+    )
+
+    data class DevicePanelState(
+        val id: String,
+        val name: String,
+        val status: String,
+        val selectedRange: TimeRange = TimeRange.DAY,
+        val displayedDateRange: String = "",
+        val selectedSensor: DeviceSensorType = DeviceSensorType.TEMPERATURE,
+        val supportedSensors: List<DeviceSensorType> = listOf(
+            DeviceSensorType.TEMPERATURE,
+            DeviceSensorType.DUST,
+            DeviceSensorType.RADIOACTIVITY
+        ),
+        val chartDataset: ChartDataset = ChartDataset.Single(emptyList()),
+        val isChartLoading: Boolean = false,
+        val chartErrorMessage: String? = null,
+        /** Non-positive: shift the window into the past; `0` ends at now. */
+        val chartWindowOffset: Int = 0,
+    )
+
+    data class SearchPanelState(
+        val query: String = "",
+        val results: List<SearchResult> = emptyList()
+    )
+
+    data class State(
+        val isLoading: Boolean = false,
+        val items: List<MapMarker> = emptyList(),
+        val selectedTopSensor: SensorType = SensorType.DUST,
+        val searchPanelState: SearchPanelState? = null,
+        val devicePanelState: DevicePanelState? = null,
+        val selectedMarkerId: String? = null,
+        val showHelpDialog: Boolean = false
+    )
+
+    sealed interface Action {
+        data class ShowToast(val message: String) : Action
+        data class OpenDeviceRequested(val deviceId: String) : Action
+    }
+
+    sealed interface Event {
+        data object RetryClicked : Event
+        data object SearchButtonClicked : Event
+        data object SearchClosed : Event
+        data class SearchQueryChanged(val value: String) : Event
+        data class SearchResultClicked(val resultId: String) : Event
+        data object MyLocationClicked : Event
+        data class TopSensorSelected(val sensor: SensorType) : Event
+        data object HelpClicked : Event
+        data object HelpDialogDismissed : Event
+        data class MarkerClicked(val itemId: String) : Event
+        data object DevicePanelClosed : Event
+        data object DeviceOpenClicked : Event
+        data class TimeRangeSelected(val range: TimeRange) : Event
+        data object DateBackClicked : Event
+        data object DateForwardClicked : Event
+        data class DeviceSensorSelected(val sensor: DeviceSensorType) : Event
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/map/MapUiComponents.kt

@@ -0,0 +1,921 @@
+package org.db3.airmq.features.map
+
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.wrapContentHeight
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Card
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.FilterChip
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.animation.core.tween
+import androidx.compose.animation.expandVertically
+import androidx.compose.animation.shrinkVertically
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.draw.rotate
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextDecoration
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import org.db3.airmq.R
+import org.db3.airmq.features.common.AirMQButton
+import org.db3.airmq.features.common.AirMQButtonStyle
+import org.db3.airmq.features.common.chart.AirMQChart
+import org.db3.airmq.features.common.chart.ChartConfig
+import org.db3.airmq.features.common.metric.SensorType as MetricSensorType
+import org.db3.airmq.features.dashboard.DashboardChartMapper
+import org.db3.airmq.features.map.MapScreenContract.DevicePanelState
+import org.db3.airmq.features.map.MapScreenContract.DeviceSensorType
+import org.db3.airmq.features.map.MapScreenContract.SearchResult
+import org.db3.airmq.features.map.MapScreenContract.SensorType
+import org.db3.airmq.features.map.MapScreenContract.TimeRange
+import org.db3.airmq.ui.theme.AirMQTheme
+
+private fun chartConfigForSensor(
+    sensor: DeviceSensorType,
+    leftTimeLabel: String = "",
+    rightTimeLabel: String = ""
+): ChartConfig {
+    val (lineColor, unit) = when (sensor) {
+        DeviceSensorType.TEMPERATURE -> Color(0xFFFFB357) to "°C"
+        DeviceSensorType.DUST -> Color(0xFFEAB839) to "µg/m³"
+        DeviceSensorType.RADIOACTIVITY -> Color(0xFF8F3BB8) to "μSv/h"
+    }
+    val fillColor = lineColor.copy(alpha = 0.5f)
+    return ChartConfig(
+        lineColor = lineColor,
+        fillColor = fillColor,
+        backgroundColor = Color(0x0F000000),
+        labelColor = Color(0x8A000000),
+        roundCorners = false,
+        leftTimeLabel = leftTimeLabel,
+        rightTimeLabel = rightTimeLabel,
+        unit = unit
+    )
+}
+
+private fun sensorTypeString(sensor: DeviceSensorType): String = when (sensor) {
+    DeviceSensorType.TEMPERATURE -> "sensor_temperature"
+    DeviceSensorType.DUST -> "sensor_dust"
+    DeviceSensorType.RADIOACTIVITY -> "sensor_radioactivity"
+}
+
+@Composable
+fun MapTopControls(
+    selectedSensor: SensorType,
+    onSensorSelected: (SensorType) -> Unit,
+    onHelpClick: () -> Unit,
+    initiallyExpanded: Boolean = false,
+    modifier: Modifier = Modifier
+) {
+    var isExpanded by remember(initiallyExpanded) { mutableStateOf(initiallyExpanded) }
+    val arrowRotation = if (isExpanded) 180f else 0f
+    val selectedLabel = when (selectedSensor) {
+        SensorType.DUST -> stringResource(id = R.string.text_air_quality)
+        SensorType.RADIOACTIVITY -> stringResource(id = R.string.sensor_radioactivity)
+    }
+
+    Box(
+        modifier = modifier
+            .width(234.dp)
+            .wrapContentHeight()
+    ) {
+        Column(
+            modifier = Modifier
+                .align(Alignment.TopStart)
+                .padding(start = 10.dp, top = 10.dp, end = 10.dp)
+        ) {
+            Surface(
+                modifier = Modifier
+                    .width(214.dp)
+                    .height(36.dp)
+                    .clickable { isExpanded = !isExpanded },
+                shape = RoundedCornerShape(18.dp),
+                shadowElevation = 10.dp,
+                color = Color.White
+            ) {
+                Row(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .padding(start = 12.dp, end = 48.dp),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Icon(
+                        painter = painterResource(id = R.drawable.ic_arrow_down_dark),
+                        contentDescription = null,
+                        tint = Color(0x8A000000),
+                        modifier = Modifier.rotate(arrowRotation)
+                    )
+                    Spacer(modifier = Modifier.width(8.dp))
+                    Text(
+                        text = selectedLabel.uppercase(),
+                        style = MaterialTheme.typography.labelLarge,
+                        color = Color(0x61000000)
+                    )
+                }
+            }
+
+            if (isExpanded) {
+                Surface(
+                    modifier = Modifier
+                        .width(214.dp)
+                        .padding(top = 8.dp),
+                    shape = RoundedCornerShape(18.dp),
+                    shadowElevation = 10.dp,
+                    color = Color.White
+                ) {
+                    Column(modifier = Modifier.padding(top = 8.dp, bottom = 10.dp)) {
+                        SensorTypeItem(
+                            iconRes = R.drawable.ic_dust,
+                            titleRes = R.string.text_air_quality,
+                            selected = selectedSensor == SensorType.DUST,
+                            onClick = {
+                                onSensorSelected(SensorType.DUST)
+                                isExpanded = false
+                            }
+                        )
+                        HorizontalDivider(color = Color(0x1F000000))
+                        SensorTypeItem(
+                            iconRes = R.drawable.ic_radiation,
+                            titleRes = R.string.sensor_radioactivity,
+                            selected = selectedSensor == SensorType.RADIOACTIVITY,
+                            onClick = {
+                                onSensorSelected(SensorType.RADIOACTIVITY)
+                                isExpanded = false
+                            }
+                        )
+                        Text(
+                            text = stringResource(id = R.string.text_what_does_it_mean),
+                            modifier = Modifier
+                                .align(Alignment.CenterHorizontally)
+                                .padding(top = 12.dp)
+                                .clickable {
+                                    onHelpClick()
+                                    isExpanded = false
+                                },
+                            style = MaterialTheme.typography.bodyMedium,
+                            color = Color(0x8A000000),
+                            textDecoration = TextDecoration.Underline
+                        )
+                    }
+                }
+            }
+        }
+
+        Box(
+            modifier = Modifier
+                .align(Alignment.TopEnd)
+                .size(56.dp)
+                .background(
+                    brush = Brush.linearGradient(
+                        colors = listOf(Color(0xFF00FF6D), Color(0xFF03AEF9))
+                    ),
+                    shape = CircleShape
+                ),
+            contentAlignment = Alignment.Center
+        ) {
+            Icon(
+                painter = painterResource(
+                    id = if (selectedSensor == SensorType.RADIOACTIVITY) {
+                        R.drawable.ic_radiation
+                    } else {
+                        R.drawable.ic_dust
+                    }
+                ),
+                contentDescription = null,
+                tint = Color.White,
+                modifier = Modifier.size(24.dp)
+            )
+        }
+    }
+}
+
+@Composable
+fun WhatDoesThisMeanDialog(
+    onDismiss: () -> Unit
+) {
+    Dialog(onDismissRequest = onDismiss) {
+        Card(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 32.dp, vertical = 128.dp),
+            shape = RoundedCornerShape(24.dp),
+            colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surface)
+        ) {
+            Column(
+                modifier = Modifier.padding(24.dp)
+            ) {
+                Text(
+                    text = stringResource(id = R.string.text_what_does_it_mean_title),
+                    style = MaterialTheme.typography.titleMedium,
+                    fontSize = 16.sp,
+                    fontWeight = FontWeight.Medium,
+                    modifier = Modifier.padding(bottom = 22.dp)
+                )
+                Column(
+                    modifier = Modifier
+                        .heightIn(max = 400.dp)
+                        .verticalScroll(rememberScrollState())
+                        .padding(horizontal = 0.dp)
+                ) {
+                    Text(
+                        text = stringResource(id = R.string.text_aqi_title),
+                        style = MaterialTheme.typography.bodyLarge,
+                        fontSize = 16.sp,
+                        fontWeight = FontWeight.Medium
+                    )
+                    Spacer(modifier = Modifier.height(16.dp))
+                    Text(
+                        text = stringResource(id = R.string.text_aqi),
+                        style = MaterialTheme.typography.bodyMedium
+                    )
+                    Spacer(modifier = Modifier.height(8.dp))
+                    Image(
+                        painter = painterResource(id = R.drawable.aqi_table),
+                        contentDescription = null,
+                        contentScale = ContentScale.Fit,
+                        modifier = Modifier
+                            .width(300.dp)
+                            .height(150.dp)
+                    )
+                    Spacer(modifier = Modifier.height(20.dp))
+                    Text(
+                        text = stringResource(id = R.string.text_rad_title),
+                        style = MaterialTheme.typography.bodyLarge,
+                        fontSize = 16.sp,
+                        fontWeight = FontWeight.Medium
+                    )
+                    Spacer(modifier = Modifier.height(16.dp))
+                    Text(
+                        text = stringResource(id = R.string.text_rad),
+                        style = MaterialTheme.typography.bodyMedium
+                    )
+                }
+                TextButton(
+                    onClick = onDismiss,
+                    modifier = Modifier.align(Alignment.End)
+                ) {
+                    Text(stringResource(id = R.string.button_ok))
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun SensorTypeItem(
+    iconRes: Int,
+    titleRes: Int,
+    selected: Boolean,
+    onClick: () -> Unit
+) {
+    val textColor = if (selected) Color(0xFF1C1C1C) else Color(0xFF616161)
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick)
+            .padding(horizontal = 16.dp, vertical = 10.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Icon(
+            painter = painterResource(id = iconRes),
+            contentDescription = null,
+            tint = textColor,
+            modifier = Modifier.size(18.dp)
+        )
+        Spacer(modifier = Modifier.width(10.dp))
+        Text(
+            text = stringResource(id = titleRes),
+            style = MaterialTheme.typography.bodyMedium,
+            color = textColor
+        )
+    }
+}
+
+@Composable
+fun MapFloatingActions(
+    onSearchClick: () -> Unit,
+    onMyLocationClick: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Column(
+        modifier = modifier,
+        verticalArrangement = Arrangement.spacedBy(12.dp),
+        horizontalAlignment = Alignment.End
+    ) {
+        RoundIconButton(
+            iconRes = R.drawable.ic_map_search,
+            contentDescription = stringResource(id = R.string.content_search),
+            onClick = onSearchClick
+        )
+        RoundIconButton(
+            iconRes = R.drawable.ic_map_my_location,
+            contentDescription = stringResource(id = R.string.content_my_location),
+            onClick = onMyLocationClick
+        )
+    }
+}
+
+@Composable
+private fun RoundIconButton(
+    iconRes: Int,
+    contentDescription: String,
+    onClick: () -> Unit
+) {
+    Surface(
+        modifier = Modifier
+            .size(44.dp)
+            .clickable(onClick = onClick),
+        shape = CircleShape,
+        shadowElevation = 8.dp,
+        color = Color.White
+    ) {
+        Box(contentAlignment = Alignment.Center) {
+            Icon(
+                painter = androidx.compose.ui.res.painterResource(id = iconRes),
+                contentDescription = contentDescription,
+                tint = Color(0xFF1C1C1C)
+            )
+        }
+    }
+}
+
+@Composable
+fun MapSearchOverlay(
+    query: String,
+    results: List<SearchResult>,
+    onQueryChanged: (String) -> Unit,
+    onClose: () -> Unit,
+    onResultClick: (SearchResult) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Column(
+        modifier = modifier
+            .fillMaxSize()
+            .background(Color.White)
+            .padding(12.dp),
+        verticalArrangement = Arrangement.spacedBy(12.dp)
+    ) {
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.spacedBy(10.dp),
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            AirMQButton(
+                text = stringResource(id = R.string.content_back),
+                onClick = onClose,
+                style = AirMQButtonStyle.Outlined
+            )
+            OutlinedTextField(
+                value = query,
+                onValueChange = onQueryChanged,
+                singleLine = true,
+                modifier = Modifier.fillMaxWidth(),
+                placeholder = { Text(stringResource(id = R.string.map_search_hint)) }
+            )
+        }
+
+        if (results.isEmpty()) {
+            Text(
+                text = stringResource(id = R.string.map_search_empty),
+                style = MaterialTheme.typography.bodyMedium,
+                color = Color.Gray,
+                modifier = Modifier.padding(top = 8.dp)
+            )
+        } else {
+            Column(
+                modifier = Modifier.fillMaxWidth(),
+                verticalArrangement = Arrangement.spacedBy(8.dp)
+            ) {
+                results.forEach { result ->
+                    Card(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .clickable { onResultClick(result) },
+                        colors = CardDefaults.cardColors(containerColor = Color(0xFFF7F7F7))
+                    ) {
+                        Column(modifier = Modifier.padding(12.dp)) {
+                            Text(
+                                text = result.title,
+                                style = MaterialTheme.typography.titleMedium
+                            )
+                            Spacer(modifier = Modifier.height(2.dp))
+                            Text(
+                                text = result.subtitle,
+                                style = MaterialTheme.typography.bodySmall,
+                                color = Color.Gray
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun MapDevicePanelContent(
+    data: DevicePanelState,
+    onOpenDevice: () -> Unit,
+    onRangeSelected: (TimeRange) -> Unit,
+    onDateBack: () -> Unit,
+    onDateForward: () -> Unit,
+    onSensorSelected: (DeviceSensorType) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Column(
+        modifier = modifier
+            .fillMaxWidth()
+            .padding(horizontal = 16.dp, vertical = 14.dp),
+        verticalArrangement = Arrangement.spacedBy(14.dp)
+    ) {
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.SpaceBetween,
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+                Column(
+                    modifier = Modifier.weight(1f),
+                    horizontalAlignment = Alignment.Start
+                ) {
+                    Text(text = data.name, style = MaterialTheme.typography.titleMedium)
+                    Text(
+                        text = data.status,
+                        style = MaterialTheme.typography.bodySmall,
+                        color = Color.Gray
+                    )
+                }
+                AirMQButton(
+                    text = stringResource(id = R.string.button_open),
+                    onClick = onOpenDevice,
+                    style = AirMQButtonStyle.Outlined
+                )
+            }
+
+            TimeRangeRow(selected = data.selectedRange, onSelected = onRangeSelected)
+
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                AirMQButton(
+                    text = stringResource(id = R.string.map_arrow_left),
+                    onClick = onDateBack,
+                    style = AirMQButtonStyle.Text
+                )
+                Text(
+                    text = data.displayedDateRange,
+                    style = MaterialTheme.typography.bodyMedium
+                )
+                AirMQButton(
+                    text = stringResource(id = R.string.map_arrow_right),
+                    onClick = onDateForward,
+                    style = AirMQButtonStyle.Text
+                )
+            }
+
+            Box(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(256.dp)
+            ) {
+                AirMQChart(
+                    data = data.chartDataset,
+                    config = chartConfigForSensor(
+                        data.selectedSensor,
+                        leftTimeLabel = stringResource(R.string.filter_hour),
+                        rightTimeLabel = stringResource(R.string.text_now)
+                    ),
+                    sensorType = sensorTypeString(data.selectedSensor),
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .height(220.dp)
+                        .align(Alignment.TopCenter)
+                )
+
+                if (data.isChartLoading) {
+                    CircularProgressIndicator(
+                        modifier = Modifier.align(Alignment.Center)
+                    )
+                }
+
+                data.chartErrorMessage?.let { err ->
+                    Text(
+                        text = err,
+                        style = MaterialTheme.typography.bodySmall,
+                        color = Color(0xFFB00020),
+                        modifier = Modifier
+                            .align(Alignment.TopCenter)
+                            .padding(top = 4.dp)
+                    )
+                }
+
+                DeviceSensorDropdown(
+                    selectedSensor = data.selectedSensor,
+                    supportedSensors = data.supportedSensors,
+                    onSelected = onSensorSelected,
+                    modifier = Modifier.align(Alignment.BottomCenter)
+                )
+            }
+        }
+}
+
+@Composable
+fun MapDevicePanel(
+    data: DevicePanelState,
+    onOpenDevice: () -> Unit,
+    onRangeSelected: (TimeRange) -> Unit,
+    onDateBack: () -> Unit,
+    onDateForward: () -> Unit,
+    onSensorSelected: (DeviceSensorType) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    Card(
+        modifier = modifier.fillMaxWidth(),
+        shape = RoundedCornerShape(topStart = 16.dp, topEnd = 16.dp),
+        colors = CardDefaults.cardColors(containerColor = Color.White)
+    ) {
+        MapDevicePanelContent(
+            data = data,
+            onOpenDevice = onOpenDevice,
+            onRangeSelected = onRangeSelected,
+            onDateBack = onDateBack,
+            onDateForward = onDateForward,
+            onSensorSelected = onSensorSelected
+        )
+    }
+}
+
+@Composable
+private fun TimeRangeRow(
+    selected: TimeRange,
+    onSelected: (TimeRange) -> Unit
+) {
+    Row(
+        modifier = Modifier.fillMaxWidth(),
+        horizontalArrangement = Arrangement.Center,
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Row(horizontalArrangement = Arrangement.spacedBy(4.dp)) {
+        TimeRangeChip(
+            label = stringResource(id = R.string.filter_hour),
+            selected = selected == TimeRange.HOUR,
+            onClick = { onSelected(TimeRange.HOUR) }
+        )
+        TimeRangeChip(
+            label = stringResource(id = R.string.filter_day),
+            selected = selected == TimeRange.DAY,
+            onClick = { onSelected(TimeRange.DAY) }
+        )
+        TimeRangeChip(
+            label = stringResource(id = R.string.filter_week),
+            selected = selected == TimeRange.WEEK,
+            onClick = { onSelected(TimeRange.WEEK) }
+        )
+        TimeRangeChip(
+            label = stringResource(id = R.string.filter_month),
+            selected = selected == TimeRange.MONTH,
+            onClick = { onSelected(TimeRange.MONTH) }
+        )
+        }
+    }
+}
+
+@Composable
+private fun TimeRangeChip(
+    label: String,
+    selected: Boolean,
+    onClick: () -> Unit
+) {
+    Box(
+        modifier = Modifier
+            .height(32.dp)
+            .clip(RoundedCornerShape(16.dp))
+            .then(
+                if (selected) {
+                    Modifier.background(
+                        brush = Brush.verticalGradient(
+                            colors = listOf(Color(0xFF53AFA1), Color(0xFF247C84))
+                        )
+                    )
+                } else {
+                    Modifier.background(Color.Transparent)
+                }
+            )
+            .clickable(onClick = onClick),
+        contentAlignment = Alignment.Center
+    ) {
+        Text(
+            text = label,
+            style = MaterialTheme.typography.labelMedium,
+            color = if (selected) Color.White else Color(0x8A000000),
+            modifier = Modifier.padding(horizontal = 16.dp, vertical = 6.dp)
+        )
+    }
+}
+
+@Composable
+private fun DeviceSensorDropdown(
+    selectedSensor: DeviceSensorType,
+    supportedSensors: List<DeviceSensorType>,
+    onSelected: (DeviceSensorType) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    var isExpanded by remember { mutableStateOf(false) }
+    val sensors = supportedSensors.ifEmpty {
+        listOf(DeviceSensorType.TEMPERATURE, DeviceSensorType.DUST, DeviceSensorType.RADIOACTIVITY)
+    }
+
+    Box(
+        modifier = modifier.fillMaxWidth(),
+        contentAlignment = Alignment.Center
+    ) {
+        Column(
+            modifier = Modifier.width(204.dp),
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            AnimatedVisibility(
+                visible = isExpanded,
+                enter = expandVertically(animationSpec = tween(durationMillis = 150)),
+                exit = shrinkVertically(animationSpec = tween(durationMillis = 150))
+            ) {
+                Surface(
+                    modifier = Modifier.fillMaxWidth(),
+                    shape = RoundedCornerShape(topStart = 18.dp, topEnd = 18.dp),
+                    shadowElevation = 10.dp,
+                    color = Color.White
+                ) {
+                    Column {
+                        sensors.forEachIndexed { index, sensorType ->
+                            if (index > 0) {
+                                HorizontalDivider(color = Color(0x1F000000))
+                            }
+                            DeviceSensorDropdownOption(
+                                sensorType = sensorType,
+                                selected = selectedSensor == sensorType,
+                                showSelectedBorder = isExpanded && selectedSensor == sensorType,
+                                onClick = {
+                                    onSelected(sensorType)
+                                    isExpanded = false
+                                }
+                            )
+                        }
+                    }
+                }
+            }
+
+            val triggerShape = if (isExpanded) {
+                RoundedCornerShape(bottomStart = 18.dp, bottomEnd = 18.dp)
+            } else {
+                RoundedCornerShape(18.dp)
+            }
+            Surface(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(36.dp)
+                    .clip(triggerShape)
+                    .clickable { isExpanded = !isExpanded },
+                shape = triggerShape,
+                shadowElevation = 10.dp,
+                color = Color.White
+            ) {
+                Row(
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .padding(horizontal = 8.dp, vertical = 4.dp),
+                    verticalAlignment = Alignment.CenterVertically
+                ) {
+                    Icon(
+                        painter = painterResource(id = sensorIconRes(selectedSensor)),
+                        contentDescription = null,
+                        tint = Color(0x8A000000),
+                        modifier = Modifier.size(24.dp)
+                    )
+                    Spacer(modifier = Modifier.width(8.dp))
+                    Text(
+                        text = stringResource(id = sensorLabelRes(selectedSensor)),
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = Color(0x8A000000)
+                    )
+                    Spacer(modifier = Modifier.weight(1f))
+                    Icon(
+                        painter = painterResource(id = R.drawable.ic_arrow_right_24),
+                        contentDescription = null,
+                        tint = Color(0x8A000000),
+                        modifier = Modifier.size(24.dp)
+                    )
+                }
+            }
+        }
+    }
+}
+
+private fun sensorIconRes(sensorType: DeviceSensorType): Int = when (sensorType) {
+    DeviceSensorType.TEMPERATURE -> R.drawable.ic_temperature
+    DeviceSensorType.DUST -> R.drawable.ic_dust
+    DeviceSensorType.RADIOACTIVITY -> R.drawable.ic_radiation
+}
+
+private fun sensorLabelRes(sensorType: DeviceSensorType): Int = when (sensorType) {
+    DeviceSensorType.TEMPERATURE -> R.string.sensor_temperature
+    DeviceSensorType.DUST -> R.string.sensor_dust
+    DeviceSensorType.RADIOACTIVITY -> R.string.sensor_radioactivity
+}
+
+@Composable
+private fun DeviceSensorDropdownOption(
+    sensorType: DeviceSensorType,
+    selected: Boolean,
+    showSelectedBorder: Boolean,
+    onClick: () -> Unit
+) {
+    val textColor = if (selected) Color(0xFF1C1C1C) else Color(0xFF616161)
+    val borderModifier = if (showSelectedBorder) {
+        Modifier.border(1.dp, Color(0x61000000), RoundedCornerShape(8.dp))
+    } else Modifier
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .then(borderModifier)
+            .clickable(onClick = onClick)
+            .padding(horizontal = 16.dp, vertical = 10.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Icon(
+            painter = painterResource(id = sensorIconRes(sensorType)),
+            contentDescription = null,
+            tint = textColor,
+            modifier = Modifier.size(24.dp)
+        )
+        Spacer(modifier = Modifier.width(16.dp))
+        Text(
+            text = stringResource(id = sensorLabelRes(sensorType)),
+            style = MaterialTheme.typography.bodyMedium,
+            color = textColor
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun PreviewMapTopControlsCollapsedDust() {
+    AirMQTheme {
+        MapTopControls(
+            selectedSensor = SensorType.DUST,
+            onSensorSelected = {},
+            onHelpClick = {}
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun PreviewMapTopControlsExpandedDust() {
+    AirMQTheme {
+        MapTopControls(
+            selectedSensor = SensorType.DUST,
+            onSensorSelected = {},
+            onHelpClick = {},
+            initiallyExpanded = true
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun PreviewMapTopControlsExpandedRadioactivity() {
+    AirMQTheme {
+        MapTopControls(
+            selectedSensor = SensorType.RADIOACTIVITY,
+            onSensorSelected = {},
+            onHelpClick = {},
+            initiallyExpanded = true
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun PreviewMapSearchOverlayEmpty() {
+    AirMQTheme {
+        MapSearchOverlay(
+            query = "Minsk",
+            results = emptyList(),
+            onQueryChanged = {},
+            onClose = {},
+            onResultClick = {}
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun PreviewMapSearchOverlayWithResults() {
+    AirMQTheme {
+        MapSearchOverlay(
+            query = "Minsk",
+            results = listOf(
+                SearchResult(id = "1", title = "AirMQ #42", subtitle = "Minsk"),
+                SearchResult(id = "2", title = "AirMQ #91", subtitle = "Salihorsk")
+            ),
+            onQueryChanged = {},
+            onClose = {},
+            onResultClick = {}
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun PreviewMapDevicePanelDust() {
+    AirMQTheme {
+        MapDevicePanel(
+            data = DevicePanelState(
+                id = "42",
+                name = "AirMQ #42",
+                status = "Online",
+                selectedRange = TimeRange.DAY,
+                displayedDateRange = "Today",
+                selectedSensor = DeviceSensorType.DUST,
+                chartDataset = DashboardChartMapper.chartDataset(
+                    DashboardChartMapper.previewStaticRows(),
+                    MetricSensorType.DUST
+                ),
+                isChartLoading = false
+            ),
+            onOpenDevice = {},
+            onRangeSelected = {},
+            onDateBack = {},
+            onDateForward = {},
+            onSensorSelected = {}
+        )
+    }
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun PreviewMapDevicePanelRadioactivity() {
+    AirMQTheme {
+        MapDevicePanel(
+            data = DevicePanelState(
+                id = "43",
+                name = "AirMQ #43",
+                status = "Offline",
+                selectedRange = TimeRange.WEEK,
+                displayedDateRange = "Last 7 days",
+                selectedSensor = DeviceSensorType.RADIOACTIVITY,
+                chartDataset = DashboardChartMapper.chartDataset(
+                    DashboardChartMapper.previewStaticRows(),
+                    MetricSensorType.RADIOACTIVITY
+                ),
+                isChartLoading = false
+            ),
+            onOpenDevice = {},
+            onRangeSelected = {},
+            onDateBack = {},
+            onDateForward = {},
+            onSensorSelected = {}
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/map/MapViewModel.kt

@@ -0,0 +1,497 @@
+package org.db3.airmq.features.map
+
+import android.content.Context
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+import javax.inject.Inject
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.db3.airmq.R
+import org.db3.airmq.features.common.chart.ChartDataset
+import org.db3.airmq.features.common.metric.SensorType
+import org.db3.airmq.features.dashboard.DashboardChartMapper
+import org.db3.airmq.features.map.MapScreenContract.Action
+import org.db3.airmq.features.map.MapScreenContract.DevicePanelState
+import org.db3.airmq.features.map.MapScreenContract.DeviceSensorType
+import org.db3.airmq.features.map.MapScreenContract.Event
+import org.db3.airmq.features.map.MapScreenContract.SearchResult
+import org.db3.airmq.features.map.MapScreenContract.SearchPanelState
+import org.db3.airmq.features.map.MapScreenContract.SensorType as MapSensorType
+import org.db3.airmq.features.map.MapScreenContract.State
+import org.db3.airmq.features.map.MapScreenContract.TimeRange
+import org.db3.airmq.sdk.auth.ApiTokenStore
+import org.db3.airmq.sdk.dashboard.DeviceTimeSeriesRepository
+import org.db3.airmq.sdk.dashboard.SensorSampleRow
+import org.db3.airmq.sdk.map.MapService
+import org.db3.airmq.sdk.map.domain.MapItem
+import org.db3.airmq.sdk.settings.SettingsService
+
+@HiltViewModel
+class MapViewModel @Inject constructor(
+    @ApplicationContext private val appContext: Context,
+    private val mapService: MapService,
+    private val apiTokenStore: ApiTokenStore,
+    private val settingsService: SettingsService,
+    private val deviceTimeSeriesRepository: DeviceTimeSeriesRepository,
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(State(isLoading = true))
+    val uiState: StateFlow<State> = _uiState.asStateFlow()
+    private var domainItems: List<MapItem> = emptyList()
+
+    private val _actions = MutableSharedFlow<Action>(extraBufferCapacity = 1)
+    val actions: SharedFlow<Action> = _actions.asSharedFlow()
+
+    private var showOfflineDevices = false
+    private var deviceChartRowsCache: List<SensorSampleRow> = emptyList()
+
+    init {
+        viewModelScope.launch {
+            apiTokenStore.observeToken().collectLatest {
+                refreshMapItems()
+            }
+        }
+    }
+
+    fun onEvent(event: Event) {
+        when (event) {
+            is Event.RetryClicked -> {
+                refreshMapItems()
+            }
+
+            is Event.SearchButtonClicked -> {
+                deviceChartRowsCache = emptyList()
+                _uiState.value = _uiState.value.copy(
+                    searchPanelState = SearchPanelState(),
+                    devicePanelState = null
+                )
+            }
+
+            is Event.SearchClosed -> {
+                _uiState.value = _uiState.value.copy(
+                    searchPanelState = null
+                )
+            }
+
+            is Event.SearchQueryChanged -> {
+                val searchPanelState = _uiState.value.searchPanelState ?: return
+                val results = resolveSearchResults(event.value)
+                _uiState.value = _uiState.value.copy(
+                    searchPanelState = searchPanelState.copy(
+                        query = event.value,
+                        results = results
+                    )
+                )
+            }
+
+            is Event.SearchResultClicked -> {
+                val selectedItem = _uiState.value.items.firstOrNull { it.id == event.resultId } ?: return
+                _uiState.value = _uiState.value.copy(
+                    searchPanelState = null,
+                    devicePanelState = selectedItem.toDevicePanelState(),
+                    selectedMarkerId = event.resultId
+                )
+                loadDeviceChart(forceFetch = true)
+            }
+
+            is Event.MyLocationClicked -> {
+                _actions.tryEmit(Action.ShowToast(appContext.getString(R.string.map_my_location_coming_soon)))
+            }
+
+            is Event.TopSensorSelected -> {
+                _uiState.value = _uiState.value.copy(selectedTopSensor = event.sensor)
+                remapMarkers()
+            }
+
+            Event.HelpClicked -> {
+                _uiState.value = _uiState.value.copy(showHelpDialog = true)
+            }
+
+            Event.HelpDialogDismissed -> {
+                _uiState.value = _uiState.value.copy(showHelpDialog = false)
+            }
+
+            is Event.MarkerClicked -> {
+                val selectedItem = _uiState.value.items.firstOrNull { it.id == event.itemId } ?: return
+                _uiState.value = _uiState.value.copy(
+                    searchPanelState = null,
+                    devicePanelState = selectedItem.toDevicePanelState(),
+                    selectedMarkerId = event.itemId
+                )
+                loadDeviceChart(forceFetch = true)
+            }
+
+            is Event.DevicePanelClosed -> {
+                deviceChartRowsCache = emptyList()
+                val previousMarkerId = _uiState.value.devicePanelState?.id
+                _uiState.value = _uiState.value.copy(
+                    devicePanelState = null,
+                    selectedMarkerId = previousMarkerId
+                )
+            }
+
+            is Event.DeviceOpenClicked -> {
+                val deviceId = _uiState.value.devicePanelState?.id ?: return
+                _actions.tryEmit(Action.OpenDeviceRequested(deviceId))
+            }
+
+            is Event.TimeRangeSelected -> {
+                val panelData = _uiState.value.devicePanelState ?: return
+                _uiState.value = _uiState.value.copy(
+                    devicePanelState = panelData.copy(
+                        selectedRange = event.range,
+                        displayedDateRange = rangeLabel(event.range),
+                        chartWindowOffset = 0
+                    )
+                )
+                loadDeviceChart(forceFetch = true)
+            }
+
+            is Event.DateBackClicked -> {
+                val panelData = _uiState.value.devicePanelState ?: return
+                _uiState.value = _uiState.value.copy(
+                    devicePanelState = panelData.copy(
+                        chartWindowOffset = panelData.chartWindowOffset - 1
+                    )
+                )
+                loadDeviceChart(forceFetch = true)
+            }
+
+            Event.DateForwardClicked -> {
+                val panelData = _uiState.value.devicePanelState ?: return
+                if (panelData.chartWindowOffset >= 0) return
+                _uiState.value = _uiState.value.copy(
+                    devicePanelState = panelData.copy(
+                        chartWindowOffset = (panelData.chartWindowOffset + 1).coerceAtMost(0)
+                    )
+                )
+                loadDeviceChart(forceFetch = true)
+            }
+            is Event.DeviceSensorSelected -> {
+                val panelData = _uiState.value.devicePanelState ?: return
+                _uiState.value = _uiState.value.copy(
+                    devicePanelState = panelData.copy(selectedSensor = event.sensor)
+                )
+                loadDeviceChart(forceFetch = false)
+            }
+        }
+    }
+
+    private fun loadDeviceChart(forceFetch: Boolean = true) {
+        viewModelScope.launch {
+            val panel = _uiState.value.devicePanelState ?: return@launch
+            val locationId = panel.id
+
+            if (!forceFetch && deviceChartRowsCache.isNotEmpty()) {
+                val current = _uiState.value.devicePanelState ?: return@launch
+                if (current.id != locationId) return@launch
+                _uiState.value = _uiState.value.copy(
+                    devicePanelState = current.copy(
+                        chartDataset = DashboardChartMapper.chartDataset(
+                            deviceChartRowsCache,
+                            current.selectedSensor.toMetricSensorType()
+                        ),
+                        isChartLoading = false,
+                        chartErrorMessage = null
+                    )
+                )
+                return@launch
+            }
+
+            if (locationId.startsWith(DUMMY_PREFIX) || apiTokenStore.getToken().isNullOrBlank()) {
+                deviceChartRowsCache = emptyList()
+                val current = _uiState.value.devicePanelState ?: return@launch
+                _uiState.value = _uiState.value.copy(
+                    devicePanelState = current.copy(
+                        chartDataset = ChartDataset.Single(emptyList()),
+                        isChartLoading = false,
+                        chartErrorMessage = null
+                    )
+                )
+                return@launch
+            }
+
+            val loadingPanel = panel.copy(isChartLoading = true, chartErrorMessage = null)
+            _uiState.value = _uiState.value.copy(devicePanelState = loadingPanel)
+
+            val now = System.currentTimeMillis()
+            val span = spanMillis(panel.selectedRange)
+            val tTo = now + panel.chartWindowOffset * span
+            val tFrom = tTo - span
+            val (intervalH, intervalD, intervalM) = intervalsForRange(panel.selectedRange)
+
+            val result = withContext(Dispatchers.IO) {
+                deviceTimeSeriesRepository.fetchTimeSeries(
+                    locationId = locationId,
+                    tFromEpochMillis = tFrom,
+                    tToEpochMillis = tTo,
+                    intervalHours = intervalH,
+                    intervalDays = intervalD,
+                    intervalMinutes = intervalM,
+                )
+            }
+
+            val currentPanel = _uiState.value.devicePanelState
+            if (currentPanel?.id != locationId) return@launch
+
+            result.fold(
+                onSuccess = { rows ->
+                    deviceChartRowsCache = rows
+                    val label = formatWindowRange(tFrom, tTo)
+                    _uiState.value = _uiState.value.copy(
+                        devicePanelState = currentPanel.copy(
+                            chartDataset = DashboardChartMapper.chartDataset(
+                                rows,
+                                currentPanel.selectedSensor.toMetricSensorType()
+                            ),
+                            isChartLoading = false,
+                            chartErrorMessage = null,
+                            displayedDateRange = label
+                        )
+                    )
+                },
+                onFailure = { throwable ->
+                    deviceChartRowsCache = emptyList()
+                    _actions.tryEmit(
+                        Action.ShowToast(
+                            throwable.message ?: appContext.getString(R.string.map_failed_to_load_items)
+                        )
+                    )
+                    _uiState.value = _uiState.value.copy(
+                        devicePanelState = currentPanel.copy(
+                            chartDataset = ChartDataset.Single(emptyList()),
+                            isChartLoading = false,
+                            chartErrorMessage = throwable.message
+                        )
+                    )
+                }
+            )
+        }
+    }
+
+    private fun refreshMapItems() {
+        _uiState.value = _uiState.value.copy(isLoading = true)
+        viewModelScope.launch(Dispatchers.IO) {
+            if (apiTokenStore.getToken().isNullOrBlank()) {
+                domainItems = emptyList()
+                val searchPanelState = _uiState.value.searchPanelState
+                val selectedSensorType = _uiState.value.selectedTopSensor
+                _uiState.value = _uiState.value.copy(
+                    isLoading = false,
+                    items = dummyMarkers(selectedSensorType),
+                    searchPanelState = searchPanelState?.copy(results = emptyList())
+                )
+                return@launch
+            }
+            val result = runCatching {
+                showOfflineDevices = settingsService.getOfflineDevicesVisible()
+                mapService.fetchMapItems(showOfflineDevices = showOfflineDevices)
+            }
+            _uiState.value = result.fold(
+                onSuccess = { items ->
+                    domainItems = items
+                    val searchPanelState = _uiState.value.searchPanelState
+                    val selectedSensorType = _uiState.value.selectedTopSensor
+                    val markers = items.toMarkers(selectedSensorType).ifEmpty {
+                        dummyMarkers(selectedSensorType)
+                    }
+                    _uiState.value.copy(
+                        isLoading = false,
+                        items = markers,
+                        searchPanelState = searchPanelState?.copy(
+                            results = resolveSearchResults(searchPanelState.query)
+                        )
+                    )
+                },
+                onFailure = { throwable ->
+                    domainItems = emptyList()
+                    _actions.tryEmit(
+                        Action.ShowToast(
+                            throwable.message ?: appContext.getString(R.string.map_failed_to_load_items)
+                        )
+                    )
+                    val searchPanelState = _uiState.value.searchPanelState
+                    val selectedSensorType = _uiState.value.selectedTopSensor
+                    _uiState.value.copy(
+                        isLoading = false,
+                        items = dummyMarkers(selectedSensorType),
+                        searchPanelState = searchPanelState?.copy(results = emptyList())
+                    )
+                }
+            )
+        }
+    }
+
+    private fun resolveSearchResults(query: String): List<SearchResult> {
+        if (query.isBlank()) return emptyList()
+        return _uiState.value.items
+            .filter { item ->
+                item.title.contains(query, ignoreCase = true) ||
+                    (item.city?.contains(query, ignoreCase = true) == true)
+            }
+            .take(20)
+            .map { item ->
+                SearchResult(
+                    id = item.id,
+                    title = item.title,
+                    subtitle = item.city ?: appContext.getString(R.string.map_no_city)
+                )
+            }
+    }
+
+    private fun rangeLabel(range: TimeRange): String = when (range) {
+        TimeRange.HOUR -> appContext.getString(R.string.map_time_last_hour)
+        TimeRange.DAY -> appContext.getString(R.string.map_time_today)
+        TimeRange.WEEK -> appContext.getString(R.string.map_time_this_week)
+        TimeRange.MONTH -> appContext.getString(R.string.map_time_this_month)
+    }
+
+    private fun formatWindowRange(tFrom: Long, tTo: Long): String {
+        val df = SimpleDateFormat("MMM d HH:mm", Locale.getDefault())
+        return "${df.format(Date(tFrom))} – ${df.format(Date(tTo))}"
+    }
+
+    private fun spanMillis(range: TimeRange): Long = when (range) {
+        TimeRange.HOUR -> HOUR_MS
+        TimeRange.DAY -> DAY_MS
+        TimeRange.WEEK -> WEEK_MS
+        TimeRange.MONTH -> MONTH_MS
+    }
+
+    private fun intervalsForRange(range: TimeRange): Triple<Int, Int, Int> = when (range) {
+        TimeRange.HOUR -> Triple(0, 0, 15)
+        TimeRange.DAY -> Triple(1, 0, 0)
+        TimeRange.WEEK -> Triple(0, 1, 0)
+        TimeRange.MONTH -> Triple(0, 1, 0)
+    }
+
+    private fun remapMarkers() {
+        val markers = domainItems.toMarkers(_uiState.value.selectedTopSensor)
+        _uiState.value = _uiState.value.copy(
+            items = markers.ifEmpty { dummyMarkers(_uiState.value.selectedTopSensor) }
+        )
+    }
+
+    private fun dummyMarkers(sensorType: MapSensorType): List<MapMarker> = listOf(
+        MapMarker(
+            id = "dummy-1",
+            title = "AirMQ Demo #1",
+            city = "Minsk",
+            latitude = 53.9,
+            longitude = 27.56,
+            isOnline = true,
+            sensorType = sensorType,
+            value = 12.0,
+            isOwned = false
+        ),
+        MapMarker(
+            id = "dummy-2",
+            title = "AirMQ Demo #2",
+            city = "Minsk",
+            latitude = 53.85,
+            longitude = 27.65,
+            isOnline = true,
+            sensorType = sensorType,
+            value = 45.0,
+            isOwned = true
+        ),
+        MapMarker(
+            id = "dummy-3",
+            title = "AirMQ Demo #3",
+            city = "Minsk",
+            latitude = 53.75,
+            longitude = 27.45,
+            isOnline = false,
+            sensorType = sensorType,
+            value = 8.5,
+            isOwned = false
+        ),
+        MapMarker(
+            id = "dummy-4",
+            title = "AirMQ Demo #4",
+            city = null,
+            latitude = 53.82,
+            longitude = 27.92,
+            isOnline = true,
+            sensorType = sensorType,
+            value = null,
+            isOwned = false
+        )
+    )
+
+    private fun List<MapItem>.toMarkers(sensorType: MapSensorType): List<MapMarker> {
+        return mapNotNull { item ->
+            val value = when (sensorType) {
+                MapSensorType.DUST -> item.dustValue
+                MapSensorType.RADIOACTIVITY -> item.radioactivityValue
+            }
+
+            // Return null if device is offline or value is missing
+            if (!showOfflineDevices && (!item.isOnline || value == null)) {
+                return@mapNotNull null
+            }
+
+            MapMarker(
+                id = item.id,
+                title = item.title,
+                city = item.city,
+                latitude = item.latitude,
+                longitude = item.longitude,
+                isOnline = item.isOnline,
+                sensorType = sensorType,
+                value = value,
+                isOwned = false // TODO: derive from authenticated user when ownership/auth is implemented.
+            )
+        }
+    }
+
+    private fun MapMarker.toDevicePanelState(): DevicePanelState {
+        val defaultSensor = when (sensorType) {
+            MapSensorType.DUST -> DeviceSensorType.DUST
+            MapSensorType.RADIOACTIVITY -> DeviceSensorType.RADIOACTIVITY
+        }
+        return DevicePanelState(
+            id = id,
+            name = title,
+            status = if (isOnline) {
+                appContext.getString(R.string.map_status_online)
+            } else {
+                appContext.getString(R.string.map_status_offline)
+            },
+            selectedRange = TimeRange.DAY,
+            displayedDateRange = rangeLabel(TimeRange.DAY),
+            selectedSensor = defaultSensor,
+            chartDataset = ChartDataset.Single(emptyList()),
+            isChartLoading = true,
+            chartErrorMessage = null,
+            chartWindowOffset = 0,
+        )
+    }
+
+    private fun DeviceSensorType.toMetricSensorType(): SensorType = when (this) {
+        DeviceSensorType.TEMPERATURE -> SensorType.TEMPERATURE
+        DeviceSensorType.DUST -> SensorType.DUST
+        DeviceSensorType.RADIOACTIVITY -> SensorType.RADIOACTIVITY
+    }
+
+    private companion object {
+        private const val DUMMY_PREFIX = "dummy-"
+        private const val HOUR_MS = 60L * 60L * 1000L
+        private const val DAY_MS = 24L * HOUR_MS
+        private const val WEEK_MS = 7L * DAY_MS
+        private const val MONTH_MS = 30L * DAY_MS
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/navigation/AirMQNavGraph.kt

@@ -0,0 +1,311 @@
+package org.db3.airmq.features.navigation
+
+import android.app.Activity
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.material3.Icon
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.SideEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.material3.NavigationBar
+import androidx.compose.material3.NavigationBarItem
+import androidx.compose.material3.NavigationBarItemDefaults
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalView
+import androidx.compose.ui.graphics.Brush
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavType
+import androidx.navigation.NavGraph.Companion.findStartDestination
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.currentBackStackEntryAsState
+import androidx.navigation.compose.rememberNavController
+import androidx.navigation.navArgument
+import androidx.core.view.WindowCompat
+import org.db3.airmq.R
+import org.db3.airmq.features.city.CityScreen
+import org.db3.airmq.features.constructor.ChartConstructorScreen
+import org.db3.airmq.features.constructor.MapConstructorScreen
+import org.db3.airmq.features.constructor.NewsConstructorScreen
+import org.db3.airmq.features.constructor.SelectMapWidgetLocationScreen
+import org.db3.airmq.features.constructor.WidgetConstructorScreen
+import org.db3.airmq.features.dashboard.DashboardScreen
+import org.db3.airmq.features.debug.DebugScreen
+import org.db3.airmq.features.device.DeviceSettingsScreen
+import org.db3.airmq.features.entry.SplashScreen
+import org.db3.airmq.features.entry.WizardScreen
+import org.db3.airmq.features.location.LocationScreen
+import org.db3.airmq.features.login.EmailLoginScreen
+import org.db3.airmq.features.login.EmailRegisterScreen
+import org.db3.airmq.features.login.LoginScreen
+import org.db3.airmq.features.manage.ManageScreen
+import org.db3.airmq.features.map.MapScreen
+import org.db3.airmq.features.news.NewsDetailScreen
+import org.db3.airmq.features.news.NewsScreen
+import org.db3.airmq.features.settings.SettingsScreen
+import org.db3.airmq.features.setup.SetupScreen
+import org.db3.airmq.ui.theme.LegacyNavGradientEnd
+import org.db3.airmq.ui.theme.LegacyNavGradientStart
+import org.db3.airmq.ui.theme.LegacyNavSelected
+import org.db3.airmq.ui.theme.LegacyNavUnselected
+
+@Composable
+fun AirMQNavGraph(modifier: Modifier = Modifier) {
+    val navController = rememberNavController()
+    val tabItems = listOf(
+        BottomTabItem(route = AirMqRoutes.MAP, label = stringResource(id = R.string.title_map), iconRes = R.drawable.ic_map),
+        BottomTabItem(route = AirMqRoutes.DASHBOARD, label = stringResource(id = R.string.title_dashboard), iconRes = R.drawable.ic_dashboard),
+        BottomTabItem(route = AirMqRoutes.MANAGE, label = stringResource(id = R.string.title_manage), iconRes = R.drawable.ic_manage_active)
+    )
+    val tabRoutes = tabItems.map { it.route }.toSet()
+    val navBackStackEntry by navController.currentBackStackEntryAsState()
+    val currentRoute = navBackStackEntry?.destination?.route
+    val showBottomBar = currentRoute in tabRoutes
+
+    val view = LocalView.current
+    SideEffect {
+        val window = (view.context as? Activity)?.window ?: return@SideEffect
+        // Map: dark icons (light map background); Dashboard/Manage: white icons (dark nav bar)
+        val lightStatusBars = currentRoute == AirMqRoutes.MAP || !showBottomBar
+        WindowCompat.getInsetsController(window, view).isAppearanceLightStatusBars = lightStatusBars
+    }
+
+    Scaffold(
+        modifier = modifier,
+        contentWindowInsets = WindowInsets(0, 0, 0, 0),
+        bottomBar = {
+            if (showBottomBar) {
+                Box(
+                    modifier = Modifier.background(
+                        brush = Brush.linearGradient(
+                            colors = listOf(LegacyNavGradientEnd, LegacyNavGradientStart)
+                        )
+                    )
+                ) {
+                    NavigationBar(
+                        containerColor = Color.Transparent,
+                        tonalElevation = 0.dp
+                    ) {
+                        tabItems.forEach { tabItem ->
+                            NavigationBarItem(
+                                selected = currentRoute == tabItem.route,
+                                onClick = {
+                                    navController.navigate(tabItem.route) {
+                                        popUpTo(navController.graph.findStartDestination().id) {
+                                            saveState = true
+                                        }
+                                        launchSingleTop = true
+                                        restoreState = true
+                                    }
+                                },
+                                colors = NavigationBarItemDefaults.colors(
+                                    selectedIconColor = LegacyNavSelected,
+                                    unselectedIconColor = LegacyNavUnselected,
+                                    selectedTextColor = LegacyNavSelected,
+                                    unselectedTextColor = LegacyNavUnselected,
+                                    indicatorColor = Color.Transparent
+                                ),
+                                icon = {
+                                    Icon(
+                                        painter = painterResource(id = tabItem.iconRes),
+                                        contentDescription = tabItem.label
+                                    )
+                                },
+                                label = { Text(tabItem.label) }
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    ) { innerPadding ->
+        NavHost(
+            navController = navController,
+            startDestination = AirMqRoutes.DASHBOARD,
+            modifier = Modifier.padding(innerPadding)
+        ) {
+            composable(AirMqRoutes.SPLASH) {
+                SplashScreen(
+                    onContinue = { navController.navigate(AirMqRoutes.WIZARD) }
+                )
+            }
+            composable(AirMqRoutes.WIZARD) {
+                WizardScreen(
+                    onFinish = {
+                        navController.navigate(AirMqRoutes.DASHBOARD) {
+                            popUpTo(AirMqRoutes.SPLASH) { inclusive = true }
+                        }
+                    }
+                )
+            }
+            composable(AirMqRoutes.DASHBOARD) {
+                DashboardScreen(
+                    onOpenCity = { navController.navigate(AirMqRoutes.CITY) },
+                    onOpenDevice = { navController.navigate(AirMqRoutes.device()) },
+                    onOpenNews = { navController.navigate(AirMqRoutes.NEWS) },
+                    onOpenWidgetConstructor = { navController.navigate(AirMqRoutes.WIDGET_CONSTRUCTOR) }
+                )
+            }
+            composable(AirMqRoutes.MAP) {
+                MapScreen()
+            }
+            composable(AirMqRoutes.MANAGE) {
+                ManageScreen(
+                    onOpenDevice = { deviceId ->
+                        navController.navigate(AirMqRoutes.device(deviceId))
+                    },
+                    onOpenSetup = { navController.navigate(AirMqRoutes.SETUP) },
+                    onOpenSettings = { navController.navigate(AirMqRoutes.SETTINGS) },
+                    onOpenLogin = { navController.navigate(AirMqRoutes.LOGIN) },
+                    onOpenLocation = { navController.navigate(AirMqRoutes.LOCATION) },
+                    onOpenAddLocation = { /* TODO */ }
+                )
+            }
+            composable(
+                route = AirMqRoutes.DEVICE,
+                arguments = listOf(
+                    navArgument("deviceId") {
+                        type = NavType.StringType
+                        defaultValue = "mock-device-id"
+                    }
+                )
+            ) { backStackEntry ->
+                DeviceSettingsScreen(
+                    deviceId = backStackEntry.arguments?.getString("deviceId") ?: "mock-device-id",
+                    onOpenLocation = { navController.navigate(AirMqRoutes.LOCATION) },
+                    onShowOnMap = {
+                        navController.navigate(AirMqRoutes.MAP) {
+                            popUpTo(AirMqRoutes.MANAGE) {
+                                inclusive = true
+                            }
+                        }
+                    },
+                    onNavigateBack = { navController.popBackStack() }
+                )
+            }
+            composable(AirMqRoutes.CITY) {
+                CityScreen(
+                    onNavigateBack = { navController.popBackStack() }
+                )
+            }
+            composable(AirMqRoutes.SETTINGS) {
+                SettingsScreen(
+                    onOpenDebug = { navController.navigate(AirMqRoutes.DEBUG) },
+                    onOpenCity = { navController.navigate(AirMqRoutes.CITY) },
+                    onLogOutToManage = {
+                        navController.navigate(AirMqRoutes.MANAGE) {
+                            popUpTo(AirMqRoutes.MANAGE) { inclusive = true }
+                        }
+                    }
+                )
+            }
+            composable(AirMqRoutes.DEBUG) {
+                DebugScreen(
+                    onBackToSettings = { navController.popBackStack() }
+                )
+            }
+            composable(AirMqRoutes.LOCATION) {
+                LocationScreen(
+                    onBackToManage = { navController.navigate(AirMqRoutes.MANAGE) }
+                )
+            }
+            composable(AirMqRoutes.SETUP) {
+                SetupScreen(
+                    onFinishSetup = { navController.navigate(AirMqRoutes.MANAGE) },
+                    onCancelSetup = { navController.navigate(AirMqRoutes.MANAGE) }
+                )
+            }
+            composable(AirMqRoutes.LOGIN) {
+                LoginScreen(
+                    onLogInToManage = { navController.navigate(AirMqRoutes.MANAGE) },
+                    onOpenEmailLogin = { navController.navigate(AirMqRoutes.EMAIL_LOGIN) }
+                )
+            }
+            composable(AirMqRoutes.EMAIL_LOGIN) {
+                EmailLoginScreen(
+                    onLogInToManage = {
+                        navController.navigate(AirMqRoutes.MANAGE) {
+                            popUpTo(AirMqRoutes.LOGIN) { inclusive = true }
+                        }
+                    },
+                    onOpenRegister = { navController.navigate(AirMqRoutes.EMAIL_REGISTER) },
+                    onBack = { navController.popBackStack() }
+                )
+            }
+            composable(AirMqRoutes.EMAIL_REGISTER) {
+                EmailRegisterScreen(
+                    onRegisterSuccess = {
+                        navController.navigate(AirMqRoutes.MANAGE) {
+                            popUpTo(AirMqRoutes.LOGIN) { inclusive = true }
+                        }
+                    },
+                    onBack = { navController.popBackStack() }
+                )
+            }
+            composable(AirMqRoutes.NEWS) {
+                NewsScreen(
+                    onOpenNewsDetail = { navController.navigate(AirMqRoutes.newsDetail()) },
+                    onBackToDashboard = { navController.navigate(AirMqRoutes.DASHBOARD) }
+                )
+            }
+            composable(
+                route = AirMqRoutes.NEWS_DETAIL,
+                arguments = listOf(
+                    navArgument("newsId") {
+                        type = NavType.StringType
+                        defaultValue = "mock-news-id"
+                    }
+                )
+            ) { backStackEntry ->
+                NewsDetailScreen(
+                    newsId = backStackEntry.arguments?.getString("newsId") ?: "mock-news-id",
+                    onBackToNews = { navController.popBackStack() }
+                )
+            }
+            composable(AirMqRoutes.WIDGET_CONSTRUCTOR) {
+                WidgetConstructorScreen(
+                    onOpenSelectMapWidgetLocation = {
+                        navController.navigate(AirMqRoutes.SELECT_MAP_WIDGET_LOCATION)
+                    },
+                    onOpenMapConstructor = { navController.navigate(AirMqRoutes.MAP_CONSTRUCTOR) },
+                    onOpenChartConstructor = { navController.navigate(AirMqRoutes.CHART_CONSTRUCTOR) },
+                    onOpenNewsConstructor = { navController.navigate(AirMqRoutes.NEWS_CONSTRUCTOR) },
+                    onBackToManage = { navController.navigate(AirMqRoutes.MANAGE) }
+                )
+            }
+            composable(AirMqRoutes.SELECT_MAP_WIDGET_LOCATION) {
+                SelectMapWidgetLocationScreen(
+                    onDone = { navController.popBackStack() }
+                )
+            }
+            composable(AirMqRoutes.MAP_CONSTRUCTOR) {
+                MapConstructorScreen(
+                    onBackToWidgetConstructor = { navController.popBackStack() }
+                )
+            }
+            composable(AirMqRoutes.CHART_CONSTRUCTOR) {
+                ChartConstructorScreen(
+                    onBackToWidgetConstructor = { navController.popBackStack() }
+                )
+            }
+            composable(AirMqRoutes.NEWS_CONSTRUCTOR) {
+                NewsConstructorScreen(
+                    onBackToWidgetConstructor = { navController.popBackStack() }
+                )
+            }
+        }
+    }
+}
+
+private data class BottomTabItem(
+    val route: String,
+    val label: String,
+    val iconRes: Int
+)

app/src/main/kotlin/org/db3/airmq/features/navigation/AirMqNavGraph.kt

@@ -1,184 +0,0 @@
-package org.db3.airmq.features.navigation
-
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.Modifier
-import androidx.navigation.NavType
-import androidx.navigation.compose.NavHost
-import androidx.navigation.compose.composable
-import androidx.navigation.compose.rememberNavController
-import androidx.navigation.navArgument
-import org.db3.airmq.features.city.CityScreen
-import org.db3.airmq.features.constructor.ChartConstructorScreen
-import org.db3.airmq.features.constructor.MapConstructorScreen
-import org.db3.airmq.features.constructor.NewsConstructorScreen
-import org.db3.airmq.features.constructor.SelectMapWidgetLocationScreen
-import org.db3.airmq.features.constructor.WidgetConstructorScreen
-import org.db3.airmq.features.dashboard.DashboardScreen
-import org.db3.airmq.features.debug.DebugScreen
-import org.db3.airmq.features.device.DeviceScreen
-import org.db3.airmq.features.entry.SplashScreen
-import org.db3.airmq.features.entry.WizardScreen
-import org.db3.airmq.features.location.LocationScreen
-import org.db3.airmq.features.login.LoginScreen
-import org.db3.airmq.features.manage.ManageScreen
-import org.db3.airmq.features.map.MapScreen
-import org.db3.airmq.features.news.NewsDetailScreen
-import org.db3.airmq.features.news.NewsScreen
-import org.db3.airmq.features.settings.SettingsScreen
-import org.db3.airmq.features.setup.SetupScreen
-
-@Composable
-fun AirMqNavGraph(modifier: Modifier = Modifier) {
-    val navController = rememberNavController()
-
-    NavHost(
-        navController = navController,
-        startDestination = AirMqRoutes.SPLASH,
-        modifier = modifier
-    ) {
-        composable(AirMqRoutes.SPLASH) {
-            SplashScreen(
-                onContinue = { navController.navigate(AirMqRoutes.WIZARD) }
-            )
-        }
-        composable(AirMqRoutes.WIZARD) {
-            WizardScreen(
-                onFinish = {
-                    navController.navigate(AirMqRoutes.DASHBOARD) {
-                        popUpTo(AirMqRoutes.SPLASH) { inclusive = true }
-                    }
-                }
-            )
-        }
-        composable(AirMqRoutes.DASHBOARD) {
-            DashboardScreen(
-                onOpenMap = { navController.navigate(AirMqRoutes.MAP) },
-                onOpenManage = { navController.navigate(AirMqRoutes.MANAGE) },
-                onOpenCity = { navController.navigate(AirMqRoutes.CITY) },
-                onOpenDevice = { navController.navigate(AirMqRoutes.device()) },
-                onOpenNews = { navController.navigate(AirMqRoutes.NEWS) },
-                onOpenWidgetConstructor = { navController.navigate(AirMqRoutes.WIDGET_CONSTRUCTOR) }
-            )
-        }
-        composable(AirMqRoutes.MAP) {
-            MapScreen(
-                onOpenDevice = { navController.navigate(AirMqRoutes.device()) },
-                onBackToDashboard = { navController.navigate(AirMqRoutes.DASHBOARD) }
-            )
-        }
-        composable(AirMqRoutes.MANAGE) {
-            ManageScreen(
-                onOpenDevice = { navController.navigate(AirMqRoutes.device()) },
-                onOpenSetup = { navController.navigate(AirMqRoutes.SETUP) },
-                onOpenSettings = { navController.navigate(AirMqRoutes.SETTINGS) },
-                onOpenLogin = { navController.navigate(AirMqRoutes.LOGIN) },
-                onOpenLocation = { navController.navigate(AirMqRoutes.LOCATION) },
-                onOpenWidgetConstructor = { navController.navigate(AirMqRoutes.WIDGET_CONSTRUCTOR) },
-                onBackToDashboard = { navController.navigate(AirMqRoutes.DASHBOARD) }
-            )
-        }
-        composable(
-            route = AirMqRoutes.DEVICE,
-            arguments = listOf(
-                navArgument("deviceId") {
-                    type = NavType.StringType
-                    defaultValue = "mock-device-id"
-                }
-            )
-        ) { backStackEntry ->
-            DeviceScreen(
-                deviceId = backStackEntry.arguments?.getString("deviceId") ?: "mock-device-id",
-                onOpenLocation = { navController.navigate(AirMqRoutes.LOCATION) },
-                onShowOnMap = { navController.navigate(AirMqRoutes.MAP) }
-            )
-        }
-        composable(AirMqRoutes.CITY) {
-            CityScreen(
-                onBackToDashboard = { navController.navigate(AirMqRoutes.DASHBOARD) }
-            )
-        }
-        composable(AirMqRoutes.SETTINGS) {
-            SettingsScreen(
-                onOpenDebug = { navController.navigate(AirMqRoutes.DEBUG) },
-                onOpenCity = { navController.navigate(AirMqRoutes.CITY) },
-                onLogOutToManage = {
-                    navController.navigate(AirMqRoutes.MANAGE) {
-                        popUpTo(AirMqRoutes.MANAGE) { inclusive = true }
-                    }
-                }
-            )
-        }
-        composable(AirMqRoutes.DEBUG) {
-            DebugScreen(
-                onBackToSettings = { navController.popBackStack() }
-            )
-        }
-        composable(AirMqRoutes.LOCATION) {
-            LocationScreen(
-                onBackToManage = { navController.navigate(AirMqRoutes.MANAGE) }
-            )
-        }
-        composable(AirMqRoutes.SETUP) {
-            SetupScreen(
-                onFinishSetup = { navController.navigate(AirMqRoutes.MANAGE) },
-                onCancelSetup = { navController.navigate(AirMqRoutes.MANAGE) }
-            )
-        }
-        composable(AirMqRoutes.LOGIN) {
-            LoginScreen(
-                onLogInToManage = { navController.navigate(AirMqRoutes.MANAGE) }
-            )
-        }
-        composable(AirMqRoutes.NEWS) {
-            NewsScreen(
-                onOpenNewsDetail = { navController.navigate(AirMqRoutes.newsDetail()) },
-                onBackToDashboard = { navController.navigate(AirMqRoutes.DASHBOARD) }
-            )
-        }
-        composable(
-            route = AirMqRoutes.NEWS_DETAIL,
-            arguments = listOf(
-                navArgument("newsId") {
-                    type = NavType.StringType
-                    defaultValue = "mock-news-id"
-                }
-            )
-        ) { backStackEntry ->
-            NewsDetailScreen(
-                newsId = backStackEntry.arguments?.getString("newsId") ?: "mock-news-id",
-                onBackToNews = { navController.popBackStack() }
-            )
-        }
-        composable(AirMqRoutes.WIDGET_CONSTRUCTOR) {
-            WidgetConstructorScreen(
-                onOpenSelectMapWidgetLocation = {
-                    navController.navigate(AirMqRoutes.SELECT_MAP_WIDGET_LOCATION)
-                },
-                onOpenMapConstructor = { navController.navigate(AirMqRoutes.MAP_CONSTRUCTOR) },
-                onOpenChartConstructor = { navController.navigate(AirMqRoutes.CHART_CONSTRUCTOR) },
-                onOpenNewsConstructor = { navController.navigate(AirMqRoutes.NEWS_CONSTRUCTOR) },
-                onBackToManage = { navController.navigate(AirMqRoutes.MANAGE) }
-            )
-        }
-        composable(AirMqRoutes.SELECT_MAP_WIDGET_LOCATION) {
-            SelectMapWidgetLocationScreen(
-                onDone = { navController.popBackStack() }
-            )
-        }
-        composable(AirMqRoutes.MAP_CONSTRUCTOR) {
-            MapConstructorScreen(
-                onBackToWidgetConstructor = { navController.popBackStack() }
-            )
-        }
-        composable(AirMqRoutes.CHART_CONSTRUCTOR) {
-            ChartConstructorScreen(
-                onBackToWidgetConstructor = { navController.popBackStack() }
-            )
-        }
-        composable(AirMqRoutes.NEWS_CONSTRUCTOR) {
-            NewsConstructorScreen(
-                onBackToWidgetConstructor = { navController.popBackStack() }
-            )
-        }
-    }
-}

app/src/main/kotlin/org/db3/airmq/features/navigation/AirMqRoutes.kt

@@ -12,6 +12,8 @@ object AirMqRoutes {
     const val LOCATION = "detail/location"
     const val SETUP = "detail/setup"
     const val LOGIN = "detail/login"
+    const val EMAIL_LOGIN = "detail/email-login"
+    const val EMAIL_REGISTER = "detail/email-register"
     const val NEWS = "detail/news"
     const val NEWS_DETAIL = "detail/news/{newsId}"
     const val DEVICE = "detail/device/{deviceId}"

app/src/main/kotlin/org/db3/airmq/features/news/NewsDetailScreen.kt

@@ -1,14 +1,16 @@
 package org.db3.airmq.features.news
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
 @Composable
 fun NewsDetailScreen(newsId: String, onBackToNews: () -> Unit) {
     MockScreenScaffold(
-        title = "News Detail",
-        subtitle = "Mock newsId: $newsId",
-        actions = listOf(ScreenAction("Back to News", onBackToNews))
+        title = stringResource(id = R.string.news_detail_title),
+        subtitle = stringResource(id = R.string.coming_soon),
+        actions = listOf(ScreenAction(stringResource(id = R.string.back_to_news), onBackToNews))
     )
 }

app/src/main/kotlin/org/db3/airmq/features/news/NewsScreen.kt

@@ -1,6 +1,8 @@
 package org.db3.airmq.features.news
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
@@ -10,11 +12,11 @@ fun NewsScreen(
     onBackToDashboard: () -> Unit
 ) {
     MockScreenScaffold(
-        title = "News",
-        subtitle = "Mock news list screen.",
+        title = stringResource(id = R.string.text_widget_news),
+        subtitle = stringResource(id = R.string.coming_soon),
         actions = listOf(
-            ScreenAction("Open News Detail", onOpenNewsDetail),
-            ScreenAction("Back to Dashboard", onBackToDashboard)
+            ScreenAction(stringResource(id = R.string.news_open_detail), onOpenNewsDetail),
+            ScreenAction(stringResource(id = R.string.back_to_dashboard), onBackToDashboard)
         )
     )
 }

app/src/main/kotlin/org/db3/airmq/features/settings/SettingsScreen.kt

@@ -1,22 +1,307 @@
 package org.db3.airmq.features.settings
 
+import android.widget.Toast
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Checkbox
+import androidx.compose.material3.CheckboxDefaults
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import org.db3.airmq.features.common.MockScreenScaffold
-import org.db3.airmq.features.common.ScreenAction
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import kotlinx.coroutines.flow.collectLatest
+import org.db3.airmq.R
+import org.db3.airmq.features.settings.SettingsScreenContract.Action
+import org.db3.airmq.features.settings.SettingsScreenContract.Event
+import org.db3.airmq.features.settings.SettingsScreenContract.State
+import org.db3.airmq.ui.theme.AirMQTheme
 
 @Composable
 fun SettingsScreen(
     onOpenDebug: () -> Unit,
     onOpenCity: () -> Unit,
-    onLogOutToManage: () -> Unit
+    onLogOutToManage: () -> Unit,
+    viewModel: SettingsViewModel = hiltViewModel()
 ) {
-    MockScreenScaffold(
-        title = "Settings",
-        subtitle = "Settings and account actions.",
-        actions = listOf(
-            ScreenAction("Open Debug", onOpenDebug),
-            ScreenAction("Open City", onOpenCity),
-            ScreenAction("Log Out to Manage", onLogOutToManage)
-        )
+    val uiState by viewModel.uiState.collectAsState()
+    val context = LocalContext.current
+
+    LaunchedEffect(viewModel) {
+        viewModel.actions.collectLatest { action ->
+            when (action) {
+                Action.OpenDebug -> onOpenDebug()
+                Action.OpenCity -> onOpenCity()
+                Action.LogOutToManage -> onLogOutToManage()
+                is Action.ShowMessage -> Toast.makeText(context, action.message, Toast.LENGTH_SHORT).show()
+            }
+        }
+    }
+
+    SettingsScreenContent(
+        uiState = uiState,
+        onEvent = viewModel::onEvent
     )
 }
+
+@Composable
+private fun SettingsScreenContent(
+    uiState: State,
+    onEvent: (Event) -> Unit
+) {
+    val screenHorizontalPadding = 16.dp
+    val iconSize = 20.dp
+    val iconTextGap = 12.dp
+    val headerTextStart = iconSize + iconTextGap
+
+    Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
+        if (uiState.isLoading) {
+            Column(
+                modifier = Modifier
+                    .fillMaxSize()
+                    .padding(innerPadding),
+                verticalArrangement = Arrangement.Center,
+                horizontalAlignment = Alignment.CenterHorizontally
+            ) {
+                CircularProgressIndicator()
+            }
+            return@Scaffold
+        }
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(innerPadding)
+                .padding(horizontal = screenHorizontalPadding, vertical = 12.dp)
+                .verticalScroll(rememberScrollState()),
+            verticalArrangement = Arrangement.spacedBy(2.dp)
+        ) {
+            if (uiState.isAuthorized) {
+                Text(
+                    text = stringResource(id = R.string.pref_account_header),
+                    style = MaterialTheme.typography.labelLarge,
+                    color = Color(0xFF607D8B),
+                    modifier = Modifier.padding(start = headerTextStart, top = 4.dp, bottom = 4.dp)
+                )
+                PreferenceRow(
+                    iconName = "ic_pref_logout",
+                    iconFallbackRes = android.R.drawable.ic_lock_power_off,
+                    title = stringResource(id = R.string.pref_logout_title),
+                    iconSize = iconSize,
+                    iconTextGap = iconTextGap,
+                    onClick = { onEvent(Event.LogOutClicked) }
+                )
+            }
+            Text(
+                text = stringResource(id = R.string.pref_application_header),
+                style = MaterialTheme.typography.labelLarge,
+                color = Color(0xFF607D8B),
+                modifier = Modifier.padding(start = headerTextStart, top = 4.dp, bottom = 4.dp)
+            )
+            PreferenceRow(
+                iconName = "ic_pref_city",
+                iconFallbackRes = android.R.drawable.ic_menu_myplaces,
+                title = stringResource(id = R.string.pref_city_title),
+                summary = uiState.city,
+                iconSize = iconSize,
+                iconTextGap = iconTextGap,
+                onClick = { onEvent(Event.CityClicked) }
+            )
+            PreferenceCheckRow(
+                iconName = "ic_pref_notifications",
+                iconFallbackRes = android.R.drawable.ic_dialog_info,
+                title = stringResource(id = R.string.pref_notifications_title),
+                checked = uiState.deviceStatusNotificationsEnabled,
+                iconSize = iconSize,
+                iconTextGap = iconTextGap,
+                onToggle = { onEvent(Event.DeviceStatusNotificationsChanged(it)) }
+            )
+            PreferenceCheckRow(
+                iconName = "ic_pref_offline_devices",
+                iconFallbackRes = android.R.drawable.ic_menu_mylocation,
+                title = stringResource(id = R.string.pref_offline_devices_title),
+                checked = uiState.offlineDevicesVisible,
+                iconSize = iconSize,
+                iconTextGap = iconTextGap,
+                onToggle = { onEvent(Event.OfflineDevicesVisibilityChanged(it)) }
+            )
+            PreferenceRow(
+                iconName = "ic_pref_info",
+                iconFallbackRes = android.R.drawable.ic_dialog_info,
+                title = stringResource(id = R.string.pref_about),
+                iconSize = iconSize,
+                iconTextGap = iconTextGap,
+                onClick = { onEvent(Event.AboutClicked) }
+            )
+        }
+    }
+}
+
+@Composable
+private fun PreferenceRow(
+    iconName: String,
+    iconFallbackRes: Int,
+    title: String,
+    summary: String? = null,
+    iconSize: androidx.compose.ui.unit.Dp,
+    iconTextGap: androidx.compose.ui.unit.Dp,
+    onClick: () -> Unit
+) {
+    val context = LocalContext.current
+    val iconRes = remember(iconName, iconFallbackRes) {
+        context.resources.getIdentifier(iconName, "drawable", context.packageName)
+            .takeIf { it != 0 } ?: iconFallbackRes
+    }
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .heightIn(min = 64.dp)
+            .clickable(onClick = onClick)
+            .padding(vertical = 2.dp),
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.spacedBy(iconTextGap)
+    ) {
+        Icon(
+            painter = painterResource(id = iconRes),
+            contentDescription = null,
+            modifier = Modifier.size(iconSize),
+            tint = Color(0x99333333)
+        )
+        Column {
+            Text(text = title, style = MaterialTheme.typography.bodyLarge, color = Color(0xFF222222))
+            if (summary != null) {
+                Text(
+                    text = summary,
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = Color(0xFF6B6B6B)
+                )
+            }
+        }
+    }
+}
+
+@Composable
+private fun PreferenceCheckRow(
+    iconName: String,
+    iconFallbackRes: Int,
+    title: String,
+    checked: Boolean,
+    iconSize: androidx.compose.ui.unit.Dp,
+    iconTextGap: androidx.compose.ui.unit.Dp,
+    onToggle: (Boolean) -> Unit
+) {
+    val context = LocalContext.current
+    val iconRes = remember(iconName, iconFallbackRes) {
+        context.resources.getIdentifier(iconName, "drawable", context.packageName)
+            .takeIf { it != 0 } ?: iconFallbackRes
+    }
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .heightIn(min = 64.dp)
+            .clickable { onToggle(!checked) }
+            .padding(vertical = 2.dp),
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Icon(
+            painter = painterResource(id = iconRes),
+            contentDescription = null,
+            modifier = Modifier.size(iconSize),
+            tint = Color(0x99333333)
+        )
+        Spacer(modifier = Modifier.size(iconTextGap))
+        Text(
+            text = title,
+            style = MaterialTheme.typography.bodyLarge,
+            color = Color(0xFF222222),
+            modifier = Modifier.weight(1f)
+        )
+        Checkbox(
+            checked = checked,
+            onCheckedChange = onToggle,
+            colors = CheckboxDefaults.colors(
+                checkedColor = Color(0xFF2F6FA8),
+                uncheckedColor = Color(0xFF8C8C8C),
+                checkmarkColor = Color.White
+            )
+        )
+    }
+}
+
+@Preview(name = "Settings Anonymous", showBackground = true, showSystemUi = true)
+@Composable
+private fun SettingsScreenAnonymousPreview() {
+    AirMQTheme {
+        SettingsScreenContent(
+            uiState = State(
+                isAuthorized = false,
+                city = "Minsk",
+                deviceStatusNotificationsEnabled = true,
+                offlineDevicesVisible = false,
+                advancedEnabled = false,
+                isLoading = false
+            ),
+            onEvent = {}
+        )
+    }
+}
+
+@Preview(name = "Settings Advanced", showBackground = true, showSystemUi = true)
+@Composable
+private fun SettingsScreenAdvancedPreview() {
+    AirMQTheme {
+        SettingsScreenContent(
+            uiState = State(
+                isAuthorized = false,
+                city = "Minsk",
+                deviceStatusNotificationsEnabled = true,
+                offlineDevicesVisible = true,
+                advancedEnabled = true,
+                isLoading = false
+            ),
+            onEvent = {}
+        )
+    }
+}
+
+@Preview(name = "Settings Advanced", showBackground = true, showSystemUi = true)
+@Composable
+private fun SettingsScreenAuthorizedPreview() {
+    AirMQTheme {
+        SettingsScreenContent(
+            uiState = State(
+                isAuthorized = true,
+                city = "Minsk",
+                deviceStatusNotificationsEnabled = true,
+                offlineDevicesVisible = true,
+                advancedEnabled = true,
+                isLoading = false
+            ),
+            onEvent = {}
+        )
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/settings/SettingsScreenContract.kt

@@ -0,0 +1,29 @@
+package org.db3.airmq.features.settings
+
+object SettingsScreenContract {
+    data class State(
+        val isAuthorized: Boolean = false,
+        val city: String = "",
+        val deviceStatusNotificationsEnabled: Boolean = true,
+        val offlineDevicesVisible: Boolean = false,
+        val advancedEnabled: Boolean = false,
+        val isLoading: Boolean = true
+    )
+
+    sealed interface Action {
+        data object OpenDebug : Action
+        data object OpenCity : Action
+        data object LogOutToManage : Action
+        data class ShowMessage(val message: String) : Action
+    }
+
+    sealed interface Event {
+        data object CityClicked : Event
+        data object AboutClicked : Event
+        data object DebugClicked : Event
+        data object LogOutClicked : Event
+        data class DeviceStatusNotificationsChanged(val enabled: Boolean) : Event
+        data class OfflineDevicesVisibilityChanged(val enabled: Boolean) : Event
+        data class AdvancedChanged(val enabled: Boolean) : Event
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/settings/SettingsViewModel.kt

@@ -0,0 +1,122 @@
+package org.db3.airmq.features.settings
+
+import android.content.Context
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import javax.inject.Inject
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.MutableSharedFlow
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import org.db3.airmq.R
+import org.db3.airmq.features.settings.SettingsScreenContract.Action
+import org.db3.airmq.features.settings.SettingsScreenContract.Event
+import org.db3.airmq.features.settings.SettingsScreenContract.State
+import org.db3.airmq.sdk.auth.AuthService
+import org.db3.airmq.sdk.city.CityService
+import org.db3.airmq.sdk.settings.SettingsService
+
+@HiltViewModel
+class SettingsViewModel @Inject constructor(
+    @ApplicationContext private val appContext: Context,
+    private val settingsService: SettingsService,
+    private val authService: AuthService,
+    private val cityService: CityService
+) : ViewModel() {
+
+    private val _uiState = MutableStateFlow(State())
+    val uiState: StateFlow<State> = _uiState.asStateFlow()
+
+    private val _actions = MutableSharedFlow<Action>(extraBufferCapacity = 1)
+    val actions: SharedFlow<Action> = _actions.asSharedFlow()
+
+    init {
+        loadSettings()
+    }
+
+    fun onEvent(event: Event) {
+        when (event) {
+            Event.CityClicked -> _actions.tryEmit(Action.OpenCity)
+            Event.AboutClicked -> _actions.tryEmit(Action.ShowMessage(appContext.getString(R.string.coming_soon)))
+            Event.DebugClicked -> _actions.tryEmit(Action.OpenDebug)
+            Event.LogOutClicked -> logOut()
+            is Event.DeviceStatusNotificationsChanged -> {
+                updateToggle(
+                    toggle = { settingsService.setDeviceStatusNotificationsEnabled(event.enabled) },
+                    updateState = { copy(deviceStatusNotificationsEnabled = event.enabled) }
+                )
+            }
+            is Event.OfflineDevicesVisibilityChanged -> {
+                updateToggle(
+                    toggle = { settingsService.setOfflineDevicesVisible(event.enabled) },
+                    updateState = { copy(offlineDevicesVisible = event.enabled) }
+                )
+            }
+            is Event.AdvancedChanged -> {
+                updateToggle(
+                    toggle = { settingsService.setAdvancedEnabled(event.enabled) },
+                    updateState = { copy(advancedEnabled = event.enabled) }
+                )
+            }
+        }
+    }
+
+    private fun loadSettings() {
+        viewModelScope.launch(Dispatchers.IO) {
+            val session = authService.getUser()
+            val city = cityService.getSelectedCity()
+            val deviceStatus = settingsService.getDeviceStatusNotificationsEnabled()
+            val offlineVisible = settingsService.getOfflineDevicesVisible()
+            val advanced = settingsService.getAdvancedEnabled()
+            _uiState.value = _uiState.value.copy(
+                isAuthorized = session?.isAuthenticated == true,
+                city = city,
+                deviceStatusNotificationsEnabled = deviceStatus,
+                offlineDevicesVisible = offlineVisible,
+                advancedEnabled = advanced,
+                isLoading = false
+            )
+        }
+    }
+
+    private fun updateToggle(
+        toggle: suspend () -> Result<Unit>,
+        updateState: State.() -> State
+    ) {
+        viewModelScope.launch(Dispatchers.IO) {
+            val previous = _uiState.value
+            _uiState.value = previous.updateState()
+            val result = toggle()
+            if (result.isFailure) {
+                _uiState.value = previous
+                _actions.tryEmit(
+                    Action.ShowMessage(
+                        result.exceptionOrNull()?.message
+                            ?: appContext.getString(R.string.settings_save_failed)
+                    )
+                )
+            }
+        }
+    }
+
+    private fun logOut() {
+        viewModelScope.launch(Dispatchers.IO) {
+            val result = authService.signOut()
+            if (result.isSuccess) {
+                _actions.tryEmit(Action.LogOutToManage)
+            } else {
+                _actions.tryEmit(
+                    Action.ShowMessage(
+                        result.exceptionOrNull()?.message ?: appContext.getString(R.string.toast_error)
+                    )
+                )
+            }
+        }
+    }
+}

app/src/main/kotlin/org/db3/airmq/features/setup/SetupScreen.kt

@@ -1,6 +1,8 @@
 package org.db3.airmq.features.setup
 
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import org.db3.airmq.R
 import org.db3.airmq.features.common.MockScreenScaffold
 import org.db3.airmq.features.common.ScreenAction
 
@@ -10,11 +12,11 @@ fun SetupScreen(
     onCancelSetup: () -> Unit
 ) {
     MockScreenScaffold(
-        title = "Setup",
-        subtitle = "Mock setup flow for device onboarding.",
+        title = stringResource(id = R.string.button_setup),
+        subtitle = stringResource(id = R.string.coming_soon),
         actions = listOf(
-            ScreenAction("Finish Setup", onFinishSetup),
-            ScreenAction("Cancel Setup", onCancelSetup)
+            ScreenAction(stringResource(id = R.string.button_finish), onFinishSetup),
+            ScreenAction(stringResource(id = R.string.button_cancel), onCancelSetup)
         )
     )
 }

app/src/main/kotlin/org/db3/airmq/ui/theme/Color.kt

@@ -2,10 +2,60 @@ package org.db3.airmq.ui.theme
 
 import androidx.compose.ui.graphics.Color
 
-val Purple80 = Color(0xFFD0BCFF)
-val PurpleGrey80 = Color(0xFFCCC2DC)
-val Pink80 = Color(0xFFEFB8C8)
+val LegacyPrimary = Color(0xFF295989)
+val LegacyPrimaryDark = Color(0xFF0069C0)
+val LegacyAccent = Color(0xFF295989)
+val LegacyBackground = Color(0xFFFAFAFA)
+val LegacySurface = Color(0xFFFFFFFF)
+val LegacyOnPrimary = Color(0xFFFFFFFF)
+val LegacyOnSecondary = Color(0xFFFFFFFF)
+val LegacyOnBackground = Color(0xFF000000)
+val LegacyOnSurface = Color(0xFF000000)
+val LegacyOutline = Color(0x61000000)
+val LegacyOutlineLight = Color(0x3B000000)
+val LegacyBlack12 = Color(0x1F000000)
+val LegacyBlack38 = Color(0x61000000)
+val LegacyNavSelected = Color(0xFFFFFFFF)
+val LegacyNavUnselected = Color(0x8AFFFFFF)
+val LegacyNavContainer = Color(0xFF295989)
+val LegacyNavGradientStart = Color(0xFF005BAB)
+val LegacyNavGradientEnd = Color(0xFF4997D1)
 
-val Purple40 = Color(0xFF6650a4)
-val PurpleGrey40 = Color(0xFF625b71)
-val Pink40 = Color(0xFF7D5260)
+/** Dashboard city selector pill (legacy vectors city_left / city_right / city_middle) */
+val DashboardCityChipGradientStart = Color(0xFF3EDEA5)
+val DashboardCityChipGradientEnd = Color(0xFF33B6EE)
+
+val LegacyButtonContained = Color(0xFF135CA5)
+val LegacyButtonContainedDisabledOverlay = Color(0x1F000000)
+val LegacyButtonPressedOverlayDark = Color(0x33000000)
+val LegacyButtonPressedOverlayLight = Color(0x33FFFFFF)
+val LegacyButtonOnContained = Color(0xFFFFFFFF)
+val LegacyButtonOnOutlined = Color(0xFF135CA5)
+val LegacyButtonOnText = Color(0xFF295989)
+val LegacyButtonGradientStart = Color(0xFF03B6EC)
+val LegacyButtonGradientEnd = Color(0xFF01DEA7)
+
+// Chart colors
+val ChartFill = Color(0xFFBBD3E9)
+val ChartBackground = Color(0x66FFFFFF) // More opaque for visibility on light/dark
+val ChartFillWidget = Color(0xFF84B0B3)
+val ChartBackgroundWidget = Color(0x33FFFFFF) // More visible on light
+val ChartLineWidget = Color(0xFF2C7575)
+
+// Sensor colors
+val SensorTemperature = Color(0xFFFFB357)
+val SensorHumidity = Color(0xFF96D98D)
+val SensorPressure = Color(0xFF4FC3F7)
+val SensorDust25 = Color(0xFF4A90D9)
+val SensorDust10 = Color(0xFF81C784)
+val SensorDust1 = Color(0xFF90A4AE)
+val SensorRadioactivity = Color(0xFFE57373)
+
+// AQI / metric gauge colors (EPA scale for dust)
+val SensorGreen = Color(0xFF00FF1E)
+val SensorYellow = Color(0xFFFFBF00)
+val SensorOrange = Color(0xFFFF6F00)
+val SensorRed = Color(0xFFFF0000)
+val SensorPink = Color(0xFFFF006A)
+val SensorPurple = Color(0xFF6200FF)
+val SensorGrey = Color(0xFF858585)

app/src/main/kotlin/org/db3/airmq/ui/theme/Theme.kt

@@ -1,51 +1,46 @@
 package org.db3.airmq.ui.theme
 
-import android.app.Activity
-import android.os.Build
-import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.darkColorScheme
-import androidx.compose.material3.dynamicDarkColorScheme
-import androidx.compose.material3.dynamicLightColorScheme
 import androidx.compose.material3.lightColorScheme
 import androidx.compose.runtime.Composable
-import androidx.compose.ui.platform.LocalContext
 
 private val DarkColorScheme = darkColorScheme(
-    primary = Purple80,
-    secondary = PurpleGrey80,
-    tertiary = Pink80
+    primary = LegacyPrimary,
+    onPrimary = LegacyOnPrimary,
+    secondary = LegacyAccent,
+    onSecondary = LegacyOnSecondary,
+    tertiary = LegacyPrimaryDark,
+    background = LegacyBackground,
+    onBackground = LegacyOnBackground,
+    surface = LegacySurface,
+    onSurface = LegacyOnSurface,
+    outline = LegacyOutline,
+    onSurfaceVariant = LegacyNavUnselected
 )
 
 private val LightColorScheme = lightColorScheme(
-    primary = Purple40,
-    secondary = PurpleGrey40,
-    tertiary = Pink40
-
-    /* Other default colors to override
-    background = Color(0xFFFFFBFE),
-    surface = Color(0xFFFFFBFE),
-    onPrimary = Color.White,
-    onSecondary = Color.White,
-    onTertiary = Color.White,
-    onBackground = Color(0xFF1C1B1F),
-    onSurface = Color(0xFF1C1B1F),
-    */
+    primary = LegacyPrimary,
+    onPrimary = LegacyOnPrimary,
+    secondary = LegacyAccent,
+    onSecondary = LegacyOnSecondary,
+    tertiary = LegacyPrimaryDark,
+    background = LegacyBackground,
+    onBackground = LegacyOnBackground,
+    surface = LegacySurface,
+    onSurface = LegacyOnSurface,
+    outline = LegacyOutline,
+    onSurfaceVariant = LegacyNavUnselected
 )
 
 @Composable
 fun AirMQTheme(
-    darkTheme: Boolean = isSystemInDarkTheme(),
-    // Dynamic color is available on Android 12+
-    dynamicColor: Boolean = true,
+    darkTheme: Boolean = false,
+    dynamicColor: Boolean = false,
     content: @Composable () -> Unit
 ) {
     val colorScheme = when {
-        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
-            val context = LocalContext.current
-            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
-        }
-
+        dynamicColor -> LightColorScheme
         darkTheme -> DarkColorScheme
         else -> LightColorScheme
     }

app/src/main/res/drawable/airmq_logo.xml

@@ -0,0 +1,39 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="168dp"
+    android:height="172.04dp"
+    android:viewportWidth="168"
+    android:viewportHeight="172.04">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M168,87.43l-0.01,0.18c-0.15,2.88 -0.45,5.72 -0.87,8.51c-10.82,5.07 -21.99,7.26 -33.8,6.64c-1.11,-0.06 -2.23,-0.15 -3.35,-0.25c-16.88,-1.62 -33.82,-8.8 -48.38,-15.4C51.18,73.32 27.31,64.9 0,82.7c0.01,-1.29 0.04,-2.6 0.11,-3.91c0.09,-1.68 0.22,-3.34 0.42,-4.99c28.44,-16 54.39,-6.85 84.09,6.62C114.02,93.74 139.82,102.87 168,87.43z" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M167.23,76.41c-10.52,4.77 -21.39,6.82 -32.86,6.21c-1.11,-0.06 -2.23,-0.15 -3.35,-0.25c-16.88,-1.62 -33.82,-8.8 -48.38,-15.4c-29.3,-13.28 -52.54,-21.58 -78.63,-6.24c1.17,-3.57 2.58,-7.04 4.2,-10.37l0,-0.01c25.89,-11.23 50.08,-2.49 77.46,9.93c28.31,12.83 53.28,21.78 80.25,8.64C166.48,71.38 166.92,73.87 167.23,76.41z" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M163.29,109.44c-1.19,3.32 -2.58,6.54 -4.17,9.65c-8.65,3.04 -17.56,4.3 -26.87,3.81c-1.11,-0.06 -2.23,-0.15 -3.35,-0.25c-16.88,-1.62 -33.82,-8.8 -48.38,-15.4c-29.1,-13.2 -52.22,-21.48 -78.11,-6.55c-0.6,-2.49 -1.08,-5.01 -1.44,-7.58c27.85,-14.85 53.41,-5.79 82.58,7.44C111.69,113.3 136.52,122.21 163.29,109.44z" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M164.15,58.63c-2.24,1.15 -4.47,2.14 -6.69,2.96c-9.18,-29.98 -36.29,-52.47 -69.41,-54.21C62.7,6.05 39.6,17.15 24.65,35.35c-3.52,0.42 -7.07,1.13 -10.64,2.16C29.92,13.62 57.67,-1.5 88.42,0.12C124.37,2.01 153.86,26.22 164.15,58.63z" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M145.98,64.48c-2.5,0.34 -4.99,0.51 -7.49,0.51c-7.51,-21.43 -27.37,-37.29 -51.44,-38.56c-13.41,-0.71 -25.99,3.23 -36.19,10.4c-3.24,-0.7 -6.49,-1.23 -9.75,-1.57c12.3,-10.82 28.67,-17.02 46.32,-16.09C115.24,20.64 138.05,39.4 145.98,64.48z" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M125.11,63.61c-2.99,-0.59 -6.01,-1.37 -9.06,-2.3l-0.01,0c-6.71,-9.45 -17.51,-15.84 -29.97,-16.49c-3.1,-0.16 -6.12,0.03 -9.05,0.56c-3.38,-1.4 -6.77,-2.72 -10.15,-3.91c6.01,-2.43 12.64,-3.61 19.54,-3.25C103.53,39.12 117.97,49.29 125.11,63.61z" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M53.01,128.35c0.17,0.25 0.37,0.47 0.6,0.66l-0.19,-0.19C53.28,128.68 53.14,128.51 53.01,128.35z" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M47.77,145.01c-0.31,-0.29 -0.66,-0.54 -1.05,-0.7C47.09,144.46 47.46,144.71 47.77,145.01z" />
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M55.74,149.93c-0.91,0 -1.77,0.15 -2.58,0.42l-7.05,-7.08c-0.24,-0.21 -0.49,-0.41 -0.76,-0.56c-0.1,-0.05 -0.19,-0.1 -0.29,-0.14c-0.19,-0.09 -0.4,-0.15 -0.6,-0.19c-0.24,-0.05 -0.44,-0.06 -0.66,-0.06h-8.68l-17.33,-17.31v-12.38h14.07v4.75c-2.75,1.26 -4.64,3.99 -4.64,7.19c0,4.35 3.55,7.9 7.9,7.9c4.34,0 7.9,-3.55 7.9,-7.9c0,-3.2 -1.9,-5.93 -4.64,-7.19v-8.01c0,-1.79 -1.44,-3.25 -3.26,-3.25H14.53c-1.82,0 -3.27,1.46 -3.27,3.25v16.98c0,0.1 0.01,0.19 0.01,0.29c0,0.02 0.02,0.04 0.02,0.04c0,0.11 0.02,0.21 0.04,0.29c0.05,0.21 0.11,0.42 0.17,0.62c0.16,0.4 0.39,0.77 0.72,1.07l19.22,19.22c0.57,0.58 1.39,0.96 2.3,0.96h8.68l5.88,5.87c-0.5,1.03 -0.77,2.19 -0.77,3.41c0,4.52 3.67,8.19 8.19,8.19s8.2,-3.67 8.2,-8.19S60.26,149.93 55.74,149.93zM35.12,121.33c1.57,0 2.86,1.12 3.2,2.58c0.04,0.24 0.06,0.46 0.06,0.68c0,1.82 -1.47,3.28 -3.26,3.28c-1.8,0 -3.26,-1.47 -3.26,-3.28c0,-0.22 0.01,-0.45 0.06,-0.68C32.25,122.45 33.56,121.33 35.12,121.33zM55.74,161.39c-1.79,0 -3.25,-1.47 -3.25,-3.26c0,-0.44 0.07,-0.83 0.22,-1.22c0.39,-0.97 1.23,-1.72 2.26,-1.97c0.25,-0.06 0.5,-0.1 0.76,-0.1c1.8,0 3.26,1.48 3.26,3.28C59,159.92 57.55,161.39 55.74,161.39z" />
+    <path
+        android:fillColor="#FFFFFF"
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+</vector>

app/src/main/res/drawable/circle_indicator.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="10dp"
+    android:height="10dp"
+    android:viewportWidth="10"
+    android:viewportHeight="10">
+  <path
+      android:fillColor="@color/sensorOrange"
+      android:pathData="M5,5m-5,0a5,5 0,1 1,10 0a5,5 0,1 1,-10 0"/>
+</vector>

app/src/main/res/drawable/circle_marker.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
+    <solid android:color="@color/white" />
+</shape>

app/src/main/res/drawable/circle_marker_shade.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
+    <solid android:color="#66000000" />
+</shape>

app/src/main/res/drawable/device_chip_offline.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="52dp"
+    android:height="18dp"
+    android:viewportWidth="52"
+    android:viewportHeight="18">
+  <path
+      android:pathData="M43,18H9c-4.97,0 -9,-4.03 -9,-9v0c0,-4.97 4.03,-9 9,-9l34,0c4.95,0 9,4.05 9,9v0C52,13.97 47.97,18 43,18z"
+      android:fillColor="#F1AF00"/>
+  <path
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+      android:fillColor="#FFFFFF"/>
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+      android:fillColor="#FFFFFF"/>
+  <path
+      android:pathData="M27.04,12.74h-1.08v-9h1.08V12.74z"
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+      android:fillColor="#FFFFFF"/>
+  <path
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+      android:fillColor="#FFFFFF"/>
+</vector>