Improve UI

Signed-off-by: denis0001-dev <denis0001.dev@ya.ru>

app/desktop/src/main/kotlin/ru/fromchat/desktop/Main.kt

@@ -1,5 +1,6 @@
 package ru.fromchat.desktop
 
+import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
@@ -7,28 +8,34 @@ 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.graphics.ImageBitmap
 import androidx.compose.ui.graphics.painter.BitmapPainter
 import androidx.compose.ui.graphics.painter.Painter
 import androidx.compose.ui.graphics.toComposeImageBitmap
+import androidx.compose.ui.input.key.Key
+import androidx.compose.ui.input.key.KeyEventType
+import androidx.compose.ui.input.key.KeyShortcut
+import androidx.compose.ui.input.key.isCtrlPressed
+import androidx.compose.ui.input.key.isShiftPressed
+import androidx.compose.ui.input.key.key
+import androidx.compose.ui.input.key.type
+import androidx.compose.ui.unit.DpSize
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.window.FrameWindowScope
+import androidx.compose.ui.window.MenuBar
 import androidx.compose.ui.window.Notification
 import androidx.compose.ui.window.Tray
 import androidx.compose.ui.window.Window
+import androidx.compose.ui.window.WindowPlacement
+import androidx.compose.ui.window.WindowPosition
 import androidx.compose.ui.window.application
 import androidx.compose.ui.window.rememberTrayState
 import androidx.compose.ui.window.rememberWindowState
 import com.pr0gramm3r101.utils.UtilsLibrary
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.SupervisorJob
-import kotlinx.coroutines.launch
-import org.jetbrains.skia.Image
-import ru.fromchat.AppForeground
-import ru.fromchat.api.ApiClient
-import ru.fromchat.api.local.workers.AttachmentTransferBootstrap
-import ru.fromchat.ui.App
-import ru.fromchat.ui.LocalExtraStatusBarTop
+import java.awt.Desktop
+import java.awt.KeyboardFocusManager
+import java.awt.event.ActionEvent
 import java.io.BufferedReader
 import java.io.InputStreamReader
 import java.io.OutputStreamWriter
@@ -37,8 +44,22 @@ import java.net.ServerSocket
 import java.net.Socket
 import java.nio.charset.StandardCharsets
 import java.util.concurrent.atomic.AtomicBoolean
+import javax.swing.JComponent
 import javax.swing.JRootPane
+import javax.swing.SwingUtilities
+import javax.swing.text.DefaultEditorKit
 import kotlin.concurrent.thread
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.launch
+import org.jetbrains.skia.Image
+import ru.fromchat.AppForeground
+import ru.fromchat.Logger
+import ru.fromchat.api.ApiClient
+import ru.fromchat.api.local.workers.AttachmentTransferBootstrap
+import ru.fromchat.ui.App
+import ru.fromchat.ui.LocalExtraStatusBarTop
 
 private object DesktopApplicationBootstrap {
     private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Default)
@@ -113,28 +134,19 @@ private object DesktopProtocolRegistration {
     fun registerBestEffort() {
         runCatching {
             when {
-                isMac() -> Unit // Packaged macOS builds declare CFBundleURLTypes in Info.plist.
-                isWindows() -> registerWindows()
-                isLinux() -> registerLinux()
+                isMacOs() -> Unit // Packaged macOS builds declare CFBundleURLTypes in Info.plist.
+                isWindowsOs() -> registerWindows()
+                isLinuxOs() -> registerLinux()
             }
         }
     }
 
-    private fun isMac(): Boolean =
-        System.getProperty("os.name").orEmpty().lowercase().contains("mac")
-
-    private fun isWindows(): Boolean =
-        System.getProperty("os.name").orEmpty().lowercase().contains("win")
-
-    private fun isLinux(): Boolean =
-        System.getProperty("os.name").orEmpty().lowercase().contains("linux")
-
     private fun javaLauncherCommand(): String {
         val javaHome = System.getProperty("java.home")
-        val javaBin = if (isWindows()) "$javaHome\\bin\\javaw.exe" else "$javaHome/bin/java"
+        val javaBin = if (isWindowsOs()) "$javaHome\\bin\\javaw.exe" else "$javaHome/bin/java"
         val classPath = System.getProperty("java.class.path")
         val main = "ru.fromchat.desktop.MainKt"
-        return if (isWindows()) {
+        return if (isWindowsOs()) {
             "\"$javaBin\" -cp \"$classPath\" $main"
         } else {
             "$javaBin -cp ${shellQuote(classPath)} $main"
@@ -183,6 +195,10 @@ private object DesktopProtocolRegistration {
 }
 
 fun main(args: Array<String>) {
+    if (isMacOs()) {
+        System.setProperty("apple.awt.application.name", "FromChat")
+        System.setProperty("apple.laf.useScreenMenuBar", "true")
+    }
     if (!DesktopSingleInstance.acquireOrForward(args)) return
     DesktopProtocolRegistration.registerBestEffort()
     args.filter { DesktopDeepLinkBus.isFromChatUri(it) }
@@ -193,10 +209,17 @@ fun main(args: Array<String>) {
         DesktopApplicationBootstrap.launchOnApplicationStart()
 
         val windowState = rememberWindowState()
+        val aboutWindowState = rememberWindowState(
+            position = WindowPosition.Aligned(Alignment.Center),
+            size = DpSize(440.dp, 640.dp),
+        )
         var windowVisible by remember { mutableStateOf(true) }
+        var aboutOpen by remember { mutableStateOf(false) }
         val trayState = rememberTrayState()
-        val appIcon = remember { loadAppIconPainter() }
+        val trayIcon = remember { loadAppIconPainter(tray = true) }
+        val windowIcon = remember { loadAppIconPainter(tray = false) }
         val traySupported = remember { java.awt.SystemTray.isSupported() }
+        val mac = remember { isMacOs() }
 
         DisposableEffect(trayState) {
             DesktopNotifier.sink = { title, body ->
@@ -210,14 +233,26 @@ fun main(args: Array<String>) {
             }
         }
 
+        LaunchedEffect(Unit) {
+            if (!mac || !Desktop.isDesktopSupported()) return@LaunchedEffect
+            val desktop = Desktop.getDesktop()
+            if (desktop.isSupported(Desktop.Action.APP_ABOUT)) {
+                desktop.setAboutHandler {
+                    SwingUtilities.invokeLater { aboutOpen = true }
+                }
+            }
+        }
+
         if (traySupported) {
             Tray(
-                icon = appIcon,
+                icon = trayIcon,
                 state = trayState,
                 tooltip = "FromChat",
                 onAction = { windowVisible = true },
                 menu = {
                     Item("Show") { windowVisible = true }
+                    Item("About FromChat") { aboutOpen = true }
+                    Separator()
                     Item("Quit") { exitApplication() }
                 },
             )
@@ -235,7 +270,31 @@ fun main(args: Array<String>) {
             title = "FromChat",
             state = windowState,
             visible = windowVisible || !traySupported,
-            icon = appIcon,
+            icon = windowIcon,
+            onPreviewKeyEvent = { event ->
+                if (mac || event.type != KeyEventType.KeyDown || !event.isCtrlPressed) {
+                    return@Window false
+                }
+                when {
+                    event.isShiftPressed && event.key == Key.A -> {
+                        aboutOpen = true
+                        true
+                    }
+                    event.isShiftPressed && event.key == Key.N -> {
+                        windowVisible = true
+                        true
+                    }
+                    event.key == Key.M -> {
+                        windowState.isMinimized = true
+                        true
+                    }
+                    event.key == Key.Q -> {
+                        exitApplication()
+                        true
+                    }
+                    else -> false
+                }
+            },
         ) {
             LaunchedEffect(window) {
                 enableEdgeToEdgeTitleBar(window.rootPane)
@@ -244,18 +303,109 @@ fun main(args: Array<String>) {
                 AppForeground.setForeground(true)
                 onDispose { }
             }
+
+            if (mac) {
+                FromChatMenuBar(
+                    onAbout = { aboutOpen = true },
+                    onShow = { windowVisible = true },
+                    onMinimize = { windowState.isMinimized = true },
+                    onZoom = {
+                        windowState.placement =
+                            if (windowState.placement == WindowPlacement.Maximized) {
+                                WindowPlacement.Floating
+                            } else {
+                                WindowPlacement.Maximized
+                            }
+                    },
+                )
+            }
+
             CompositionLocalProvider(
-                LocalExtraStatusBarTop provides if (isMacOs()) 28.dp else 0.dp,
+                LocalExtraStatusBarTop provides if (mac) 28.dp else 0.dp,
             ) {
                 App()
             }
         }
+
+        if (aboutOpen) {
+            Window(
+                onCloseRequest = { aboutOpen = false },
+                title = "About FromChat",
+                state = aboutWindowState,
+                icon = windowIcon,
+            ) {
+                DesktopAboutContent(onClose = { aboutOpen = false })
+            }
+        }
     }
 }
 
+@Composable
+private fun FrameWindowScope.FromChatMenuBar(
+    onAbout: () -> Unit,
+    onShow: () -> Unit,
+    onMinimize: () -> Unit,
+    onZoom: () -> Unit,
+) {
+    MenuBar {
+        Menu("Actions", mnemonic = 'A') {
+            Item("About FromChat", onClick = onAbout)
+            Item(
+                "Show FromChat",
+                shortcut = KeyShortcut(Key.N, meta = true, shift = true),
+                onClick = onShow,
+            )
+        }
+        Menu("Edit", mnemonic = 'E') {
+            Item(
+                "Cut",
+                shortcut = KeyShortcut(Key.X, meta = true),
+                onClick = { performAwtEditAction(DefaultEditorKit.cutAction) },
+            )
+            Item(
+                "Copy",
+                shortcut = KeyShortcut(Key.C, meta = true),
+                onClick = { performAwtEditAction(DefaultEditorKit.copyAction) },
+            )
+            Item(
+                "Paste",
+                shortcut = KeyShortcut(Key.V, meta = true),
+                onClick = { performAwtEditAction(DefaultEditorKit.pasteAction) },
+            )
+            Separator()
+            Item(
+                "Select All",
+                shortcut = KeyShortcut(Key.A, meta = true),
+                onClick = { performAwtEditAction(DefaultEditorKit.selectAllAction) },
+            )
+        }
+        Menu("Window", mnemonic = 'W') {
+            Item(
+                "Minimize",
+                shortcut = KeyShortcut(Key.M, meta = true),
+                onClick = onMinimize,
+            )
+            Item("Zoom", onClick = onZoom)
+        }
+    }
+}
+
+private fun performAwtEditAction(actionName: String) {
+    val focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().focusOwner as? JComponent
+        ?: return
+    val action = focusOwner.actionMap.get(actionName) ?: return
+    action.actionPerformed(ActionEvent(focusOwner, ActionEvent.ACTION_PERFORMED, actionName))
+}
+
 private fun isMacOs(): Boolean =
     System.getProperty("os.name").orEmpty().lowercase().contains("mac")
 
+private fun isWindowsOs(): Boolean =
+    System.getProperty("os.name").orEmpty().lowercase().contains("win")
+
+private fun isLinuxOs(): Boolean =
+    System.getProperty("os.name").orEmpty().lowercase().contains("linux")
+
 private fun enableEdgeToEdgeTitleBar(rootPane: JRootPane) {
     if (!isMacOs()) return
     rootPane.putClientProperty("apple.awt.fullWindowContent", true)
@@ -263,11 +413,43 @@ private fun enableEdgeToEdgeTitleBar(rootPane: JRootPane) {
     rootPane.putClientProperty("apple.awt.windowTitleVisible", false)
 }
 
-private fun loadAppIconPainter(): Painter {
-    val bytes = DesktopApplicationBootstrap::class.java.classLoader
-        .getResourceAsStream("app_icon.png")
-        ?.use { it.readBytes() }
-        ?: return BitmapPainter(ImageBitmap(32, 32))
-    val skiaImage = Image.makeFromEncoded(bytes)
-    return BitmapPainter(skiaImage.toComposeImageBitmap())
+/**
+ * Loads the desktop tray or window icon from packaged resources.
+ * Prefers PNG, then WebP; returns a tiny empty bitmap only if every decode fails.
+ */
+private fun loadAppIconPainter(tray: Boolean): Painter {
+    val names = if (tray) {
+        listOf("app_icon.png", "app_icon.webp", "app_window_icon.png", "app_window_icon.webp")
+    } else {
+        listOf("app_window_icon.png", "app_window_icon.webp", "app_icon.png", "app_icon.webp")
+    }
+    val loaders = listOfNotNull(
+        Thread.currentThread().contextClassLoader,
+        DesktopApplicationBootstrap::class.java.classLoader,
+        ClassLoader.getSystemClassLoader(),
+    )
+
+    for (name in names) {
+        for (loader in loaders) {
+            val stream = loader.getResourceAsStream(name)
+                ?: loader.getResourceAsStream("/$name")
+                ?: continue
+            val bytes = runCatching { stream.use { it.readBytes() } }.getOrNull() ?: continue
+            if (bytes.isEmpty()) continue
+            val bitmap = runCatching {
+                Image.makeFromEncoded(bytes).toComposeImageBitmap()
+            }.onFailure { error ->
+                Logger.w("DesktopIcon", "Failed to decode $name: ${error.message}")
+            }.getOrNull() ?: continue
+            if (bitmap.width < 16 || bitmap.height < 16) {
+                Logger.w("DesktopIcon", "Skipping $name — decoded size ${bitmap.width}x${bitmap.height}")
+                continue
+            }
+            Logger.i("DesktopIcon", "Loaded $name (${bitmap.width}x${bitmap.height}) tray=$tray")
+            return BitmapPainter(bitmap)
+        }
+    }
+
+    Logger.w("DesktopIcon", "No app icon resource decoded; using empty placeholder")
+    return BitmapPainter(ImageBitmap(32, 32))
 }

app/shared/src/androidMain/kotlin/ru/fromchat/config/DefaultEnterToSend.android.kt

@@ -0,0 +1,3 @@
+package ru.fromchat.config
+
+internal actual fun defaultEnterToSend(): Boolean = false

app/shared/src/androidMain/kotlin/ru/fromchat/ui/chat/ChatTextSelectionMenu.android.kt

@@ -0,0 +1,8 @@
+package ru.fromchat.ui.chat
+
+import androidx.compose.runtime.Composable
+
+@Composable
+internal actual fun ProvideChatTextSelectionMenu(content: @Composable () -> Unit) {
+    content()
+}

app/shared/src/commonMain/composeResources/values-ru/strings.xml

@@ -64,6 +64,8 @@
     <string name="auth_yandex_failed">Вход через Яндекс ID отменён или не удался.</string>
     <string name="chats">Чаты</string>
     <string name="select_chat_placeholder">Выберите чат, чтобы начать переписку</string>
+    <string name="select_contact_placeholder">Выберите контакт</string>
+    <string name="select_settings_placeholder">Выберите раздел настроек</string>
     <string name="contacts">Контакты</string>
     <string name="profile">Профиль</string>
     <string name="dms">Личные чаты</string>
@@ -299,6 +301,8 @@
     <string name="logout">Выйти</string>
     <string name="materialYou">Material You</string>
     <string name="materialYou_d">Цвета как на обоях. Работает с Android 12 и новее.</string>
+    <string name="enter_to_send">Отправка по Enter</string>
+    <string name="enter_to_send_d">Enter отправляет сообщение. Shift+Enter — новая строка.</string>
     <string name="theme">Оформление</string>
     <string name="as_system">Как на телефоне</string>
     <string name="light">Светлое</string>
@@ -374,6 +378,7 @@
     <string name="settings_security_step_confirm_body">Введите новый пароль ещё раз, чтобы убедиться, что без ошибок.</string>
     <string name="settings_next">Далее</string>
     <string name="settings_hub_about_sub">Версия, ссылки и другое</string>
+    <string name="settings_hub_profile_sub">Ваш профиль и публичная информация</string>
     <string name="logs_title">Журнал</string>
     <string name="settings_hub_logs_sub">Просмотр, отправка и очистка журнала</string>
     <string name="logs_empty">Записей пока нет</string>

app/shared/src/commonMain/composeResources/values/strings.xml

@@ -72,6 +72,8 @@
     <!-- Main Screen -->
     <string name="chats">Chats</string>
     <string name="select_chat_placeholder">Select a chat to start messaging</string>
+    <string name="select_contact_placeholder">Select a contact to view</string>
+    <string name="select_settings_placeholder">Select a setting to view</string>
     <string name="contacts">Contacts</string>
     <string name="profile">Profile</string>
     <string name="dms">Private chats</string>
@@ -328,6 +330,8 @@
     <string name="logout">Log out</string>
     <string name="materialYou">Material You</string>
     <string name="materialYou_d">Match colors to your wallpaper. Works on Android 12 and up.</string>
+    <string name="enter_to_send">Send on Enter</string>
+    <string name="enter_to_send_d">Enter sends the message. Shift+Enter adds a new line.</string>
     <string name="theme">Look</string>
     <string name="as_system">Same as phone</string>
     <string name="light">Light</string>
@@ -402,6 +406,7 @@
     <string name="settings_security_step_confirm_body">Type your new password again to make sure it matches.</string>
     <string name="settings_next">Next</string>
     <string name="settings_hub_about_sub">Version, links, and more</string>
+    <string name="settings_hub_profile_sub">Your profile and public info</string>
     <string name="logs_title">Logs</string>
     <string name="settings_hub_logs_sub">View, share, and manage app logs</string>
     <string name="logs_empty">No log entries yet</string>

app/shared/src/commonMain/kotlin/ru/fromchat/config/DefaultEnterToSend.kt

@@ -0,0 +1,4 @@
+package ru.fromchat.config
+
+/** Platform default for [Settings.enterToSend] when the key is unset. */
+internal expect fun defaultEnterToSend(): Boolean

app/shared/src/commonMain/kotlin/ru/fromchat/config/Settings.kt

@@ -17,6 +17,7 @@ import com.pr0gramm3r101.utils.settings.Settings as PlatformSettings
 object Settings {
     private const val MATERIAL_YOU_KEY = "materialYou"
     private const val THEME_KEY = "theme"
+    private const val ENTER_TO_SEND_KEY = "enter_to_send"
     /** Legacy single field "host:port" or hostname — migrated once to [SERVER_IP_KEY] / [API_PORT_KEY]. */
     private const val SERVER_URL_KEY = "server_url"
     private const val SERVER_IP_KEY = "server_ip"
@@ -80,6 +81,16 @@ object Settings {
         get() = runBlocking { Theme.entries[settings.getInt(THEME_KEY, Theme.AsSystem.ordinal)] }
         set(value) = runIO { settings.putInt(THEME_KEY, value.ordinal) }
 
+    /**
+     * When true, Enter sends the message and Shift+Enter inserts a newline.
+     * When false, Enter inserts a newline (previous composer behavior).
+     *
+     * Default: ON on desktop (JVM), OFF on mobile (Android / iOS).
+     */
+    var enterToSend: Boolean
+        get() = runBlocking { settings.getBoolean(ENTER_TO_SEND_KEY, defaultEnterToSend()) }
+        set(value) = runIO { settings.putBoolean(ENTER_TO_SEND_KEY, value) }
+
     var httpsEnabled: Boolean
         get() = runBlocking {
             if (settings.contains(HTTPS_ENABLED_KEY)) {

app/shared/src/commonMain/kotlin/ru/fromchat/ui/App.kt

@@ -12,13 +12,9 @@ import androidx.compose.animation.scaleIn
 import androidx.compose.animation.scaleOut
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.BoxWithConstraints
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.width
 import androidx.compose.material3.SnackbarDuration
 import androidx.compose.material3.SnackbarHostState
-import androidx.compose.material3.VerticalDivider
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.DisposableEffect
@@ -99,15 +95,22 @@ import ru.fromchat.ui.calls.CallOverlay
 import ru.fromchat.ui.chat.panels.dm.DmChatRoute
 import ru.fromchat.ui.chat.panels.dm.DmNav
 import ru.fromchat.ui.chat.panels.dm.DmProfileRoute
+import ru.fromchat.ui.chat.panels.dm.navigateToDmChat
 import ru.fromchat.ui.chat.panels.publicchat.PublicChatChatRoute
 import ru.fromchat.ui.chat.panels.publicchat.PublicChatNav
 import ru.fromchat.ui.chat.panels.publicchat.PublicChatProfileRoute
+import ru.fromchat.ui.chat.panels.publicchat.navigateToPublicChat
 import ru.fromchat.ui.main.ConversationListDetailShell
 import ru.fromchat.ui.main.ConversationProfileThirdPaneMinWidth
+import ru.fromchat.ui.main.EmptyContactsPlaceholder
 import ru.fromchat.ui.main.EmptyConversationPlaceholder
+import ru.fromchat.ui.main.EmptySettingsPlaceholder
 import ru.fromchat.ui.main.MAIN_PAGE_CHATS
+import ru.fromchat.ui.main.MAIN_PAGE_CONTACTS
+import ru.fromchat.ui.main.MAIN_PAGE_SETTINGS
 import ru.fromchat.ui.main.MainScreen
 import ru.fromchat.ui.main.chats.ChatsSearchScreen
+import ru.fromchat.ui.main.navigateReplacingMainDetail
 import ru.fromchat.ui.main.settings.LOG_FILE_OPEN_RESULT_KEY
 import ru.fromchat.ui.main.settings.LogFilesScreen
 import ru.fromchat.ui.main.settings.LogsScreen
@@ -140,10 +143,45 @@ private fun isConversationProfileRoute(route: String?): Boolean =
     route == PublicChatNav.PROFILE_ROUTE ||
         (route != null && route.startsWith("dm/") && route.endsWith("/profile"))
 
-private fun isConversationShellRoute(route: String?): Boolean =
-    route == "chat" ||
-        isConversationChatRoute(route) ||
-        isConversationProfileRoute(route)
+private fun isStandaloneProfileRoute(route: String?): Boolean =
+    route != null && route.startsWith("profile/")
+
+private fun standaloneProfileUserId(route: String?): Int? {
+    if (route == null || !isStandaloneProfileRoute(route)) return null
+    return route
+        .substringAfter("profile/")
+        .substringBefore("?")
+        .toIntOrNull()
+        ?.takeIf { it > 0 }
+}
+
+private fun isConversationShellRoute(
+    route: String?,
+    previousRoute: String?,
+    ownUserId: Int?,
+): Boolean {
+    if (route == "chat" || isConversationChatRoute(route) || isConversationProfileRoute(route)) {
+        return true
+    }
+    if (isStandaloneProfileRoute(route)) {
+        if (isConversationChatRoute(previousRoute)) return true
+        return ownUserId != null && standaloneProfileUserId(route) == ownUserId
+    }
+    if (route != null && route.startsWith("settings/")) return true
+    if (route == "about") return true
+    if (route == SettingsRoutes.ServerConfig) {
+        return previousRoute == "chat" ||
+            previousRoute == "about" ||
+            (previousRoute != null && previousRoute.startsWith("settings/"))
+    }
+    return false
+}
+
+private fun isSettingsDetailRoute(route: String?): Boolean {
+    if (route == null) return false
+    if (route.startsWith("settings/") || route == "about") return true
+    return route == SettingsRoutes.ServerConfig
+}
 
 private fun dmUserIdFromRoute(route: String?): Int? {
     if (route == null || !route.startsWith("dm/")) return null
@@ -427,15 +465,10 @@ fun App(
                                 "navigating to dm user=${target.dmConversationUserId} " +
                                     "messageId=${target.scrollToMessageId} launchId=${target.launchId}"
                             )
-                            navController.navigate(
-                                DmNav.chatRoute(
-                                    otherUserId = target.dmConversationUserId,
-                                    sourceMessageId = target.scrollToMessageId,
-                                )
-                            ) {
-                                launchSingleTop = true
-                                popUpTo("chat") { saveState = true }
-                            }
+                            navController.navigateToDmChat(
+                                otherUserId = target.dmConversationUserId,
+                                sourceMessageId = target.scrollToMessageId,
+                            )
                         }
 
                         target.startAtPublicChat -> {
@@ -443,9 +476,7 @@ fun App(
                                 "NotificationLaunch",
                                 "navigating to public chat launchId=${target.launchId}"
                             )
-                            navController.navigate(PublicChatNav.CHAT_ROUTE) {
-                                launchSingleTop = true
-                            }
+                            navController.navigateToPublicChat()
                         }
                     }
                 }
@@ -458,19 +489,47 @@ fun App(
                 if (startDestination != null) {
                     val currentEntry by navController.currentBackStackEntryAsState()
                     val currentRoute = currentEntry?.destination?.route
+                    val previousRoute =
+                        navController.previousBackStackEntry?.destination?.route
                     val widthSizeClass = currentWindowAdaptiveInfo().widthSizeClass
                     var pendingMainTab by remember { mutableIntStateOf(MAIN_PAGE_CHATS) }
+                    val ownUserId = ApiClient.user?.id
                     val showConversationListDetail =
                         widthSizeClass != WindowWidthSizeClass.COMPACT &&
-                            isConversationShellRoute(currentRoute)
+                            isConversationShellRoute(currentRoute, previousRoute, ownUserId)
 
                     ScreenSurface {
                         Box(Modifier.fillMaxSize()) {
                             BoxWithConstraints(Modifier.fillMaxSize()) {
+                                val canFitProfileThirdPane =
+                                    maxWidth >= ConversationProfileThirdPaneMinWidth
                                 val showProfileThirdPane =
                                     showConversationListDetail &&
-                                        isConversationProfileRoute(currentRoute) &&
-                                        maxWidth >= ConversationProfileThirdPaneMinWidth
+                                        canFitProfileThirdPane &&
+                                        (
+                                            isConversationProfileRoute(currentRoute) ||
+                                                (
+                                                    isStandaloneProfileRoute(currentRoute) &&
+                                                        isConversationChatRoute(previousRoute)
+                                                    )
+                                            )
+                                val settingsProfileSplit =
+                                    showConversationListDetail &&
+                                        isStandaloneProfileRoute(currentRoute) &&
+                                        !showProfileThirdPane &&
+                                        standaloneProfileUserId(currentRoute) == ownUserId
+                                val listPaneWidth =
+                                    if (widthSizeClass == WindowWidthSizeClass.EXPANDED) {
+                                        448.dp
+                                    } else {
+                                        360.dp
+                                    }
+                                val forceSettingsListTab =
+                                    settingsProfileSplit ||
+                                        (
+                                            showConversationListDetail &&
+                                                isSettingsDetailRoute(currentRoute)
+                                            )
 
                                 @Composable
                                 fun AppNavHost(modifier: Modifier = Modifier) {
@@ -575,12 +634,12 @@ fun App(
                                     animatedVisibilityScope = this,
                                     onOpenProfile = { userId: Int ->
                                         if (userId != 0) {
-                                            navController.navigate("profile/$userId")
+                                            navController.navigateReplacingMainDetail("profile/$userId")
                                         }
                                     },
                                     onOpenConversation = { userId: Int ->
                                         if (userId != 0) {
-                                            navController.navigate(DmNav.chatRoute(userId))
+                                            navController.navigateToDmChat(userId)
                                         }
                                     }
                                 )
@@ -620,9 +679,9 @@ fun App(
                                 ProfileScreen(
                                     userId = userId,
                                     username = profileUsername,
-                                    showBackButton = true,
+                                    showBackButton = !settingsProfileSplit,
                                     onBack = { navController.navigateUp() },
-                                    onChat = { navController.navigate(DmNav.chatRoute(it)) },
+                                    onChat = { navController.navigateToDmChat(it) },
                                     sharedTransitionScope = this@SharedTransitionLayout,
                                     animatedVisibilityScope = this@composable,
                                     showErrorAsToast = fromDeepLink
@@ -802,56 +861,72 @@ fun App(
 
                                 if (showConversationListDetail) {
                                     ConversationListDetailShell(
-                                        widthSizeClass = widthSizeClass,
                                         showProfilePane = showProfileThirdPane,
+                                        listPaneWidth = listPaneWidth,
                                         listPane = {
                                             MainScreen(
                                                 sharedTransitionScope = this@SharedTransitionLayout,
                                                 snackbarHostState = profileLookupSnackbarHostState,
-                                                listPaneOnly = true,
+                                                embeddedInListDetail = true,
+                                                initialPage = pendingMainTab,
+                                                forceSettingsTab = forceSettingsListTab,
+                                                onPageChanged = { pendingMainTab = it },
                                             )
                                         },
                                         detailPane = {
-                                            if (showProfileThirdPane) {
-                                                androidx.compose.animation.AnimatedVisibility(
-                                                    visible = true,
-                                                    enter = EnterTransition.None,
-                                                    exit = ExitTransition.None,
-                                                ) {
-                                                    val dmUserId = dmUserIdFromRoute(currentRoute)
-                                                    when {
-                                                        dmUserId != null -> DmChatRoute(
-                                                            otherUserId = dmUserId,
-                                                            scrollToMessageId = null,
-                                                            navController = navController,
-                                                            sharedTransitionScope = this@SharedTransitionLayout,
-                                                            animatedVisibilityScope = this,
-                                                        )
-                                                        currentRoute == PublicChatNav.PROFILE_ROUTE ||
-                                                            currentRoute == PublicChatNav.CHAT_ROUTE -> {
-                                                            PublicChatChatRoute(
-                                                                scrollToMessageId = scrollToMessageId,
+                                            when {
+                                                showProfileThirdPane -> {
+                                                    androidx.compose.animation.AnimatedVisibility(
+                                                        visible = true,
+                                                        enter = EnterTransition.None,
+                                                        exit = ExitTransition.None,
+                                                    ) {
+                                                        val chatRouteForDetail =
+                                                            when {
+                                                                isConversationProfileRoute(currentRoute) ->
+                                                                    currentRoute
+                                                                isConversationChatRoute(previousRoute) ->
+                                                                    previousRoute
+                                                                else -> null
+                                                            }
+                                                        val dmUserId = dmUserIdFromRoute(chatRouteForDetail)
+                                                            ?: dmUserIdFromRoute(currentRoute)
+                                                        when {
+                                                            dmUserId != null -> DmChatRoute(
+                                                                otherUserId = dmUserId,
+                                                                scrollToMessageId = null,
                                                                 navController = navController,
                                                                 sharedTransitionScope = this@SharedTransitionLayout,
                                                                 animatedVisibilityScope = this,
                                                             )
+                                                            chatRouteForDetail == PublicChatNav.PROFILE_ROUTE ||
+                                                                chatRouteForDetail == PublicChatNav.CHAT_ROUTE ||
+                                                                currentRoute == PublicChatNav.PROFILE_ROUTE -> {
+                                                                PublicChatChatRoute(
+                                                                    scrollToMessageId = scrollToMessageId,
+                                                                    navController = navController,
+                                                                    sharedTransitionScope = this@SharedTransitionLayout,
+                                                                    animatedVisibilityScope = this,
+                                                                )
+                                                            }
                                                         }
                                                     }
                                                 }
-                                            } else {
-                                                AppNavHost(Modifier.fillMaxSize())
+                                                isSettingsDetailRoute(currentRoute) ->
+                                                    AppNavHost(Modifier.fillMaxSize())
+                                                currentRoute == "chat" -> {
+                                                    when (pendingMainTab) {
+                                                        MAIN_PAGE_CONTACTS -> EmptyContactsPlaceholder()
+                                                        MAIN_PAGE_SETTINGS -> EmptySettingsPlaceholder()
+                                                        else -> EmptyConversationPlaceholder()
+                                                    }
+                                                }
+                                                else -> AppNavHost(Modifier.fillMaxSize())
                                             }
                                         },
                                         profilePane = {
                                             AppNavHost(Modifier.fillMaxSize())
                                         },
-                                        onSelectMainTab = { page ->
-                                            pendingMainTab = page
-                                            navController.navigate("chat") {
-                                                popUpTo("chat") { inclusive = true }
-                                                launchSingleTop = true
-                                            }
-                                        },
                                     )
                                 } else {
                                     AppNavHost(Modifier.fillMaxSize())

app/shared/src/commonMain/kotlin/ru/fromchat/ui/chat/ChatInput.kt

@@ -36,6 +36,8 @@ import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.text.BasicTextField
+import androidx.compose.foundation.text.KeyboardActions
+import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.rounded.Reply
 import androidx.compose.material.icons.rounded.ArrowUpward
@@ -63,14 +65,22 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.SolidColor
 import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.input.key.Key
+import androidx.compose.ui.input.key.KeyEventType
+import androidx.compose.ui.input.key.isShiftPressed
+import androidx.compose.ui.input.key.key
+import androidx.compose.ui.input.key.onPreviewKeyEvent
+import androidx.compose.ui.input.key.type
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import coil3.compose.AsyncImage
+import com.pr0gramm3r101.utils.conditional
 import dev.chrisbanes.haze.HazeState
 import dev.chrisbanes.haze.blur.blurEffect
 import dev.chrisbanes.haze.hazeEffect
@@ -85,6 +95,7 @@ import ru.fromchat.cd_pick_file
 import ru.fromchat.cd_pick_image
 import ru.fromchat.cd_remove
 import ru.fromchat.cd_send
+import ru.fromchat.config.Settings
 import ru.fromchat.message_corrupted_short
 import ru.fromchat.message_editing_title
 import ru.fromchat.message_placeholder
@@ -290,6 +301,7 @@ fun ChatInput(
     }
 
     val canSend = !isReadOnly && (text.isNotBlank() || attachments.isNotEmpty())
+    val enterToSend = Settings.enterToSend
     val cdClose = stringResource(Res.string.cd_close)
     val cdRemove = stringResource(Res.string.cd_remove)
     val cdPickImage = stringResource(Res.string.cd_pick_image)
@@ -301,6 +313,15 @@ fun ChatInput(
     val blockedMessage = stringResource(Res.string.suspend_chat_banner_message)
     val cdVoiceUnavailable = "Функция пока не готова. Следите за обновлениями!"
 
+    fun sendMessage() {
+        if (!canSend) return
+        val plaintext = text.trim().ifBlank { "" }
+        onSend(plaintext, attachments)
+        onTextChange("")
+        attachments = emptyList()
+        typingHandler.stopTyping()
+    }
+
     Box(
         modifier = Modifier
             .fillMaxWidth()
@@ -447,10 +468,27 @@ fun ChatInput(
                                 modifier = Modifier
                                     .weight(1f)
                                     .fillMaxWidth()
-                                    .align(Alignment.Bottom),
+                                    .align(Alignment.Bottom)
+                                    .conditional(enterToSend) {
+                                        onPreviewKeyEvent { event ->
+                                            if (event.type != KeyEventType.KeyDown) return@onPreviewKeyEvent false
+                                            if (event.key != Key.Enter && event.key != Key.NumPadEnter) {
+                                                return@onPreviewKeyEvent false
+                                            }
+                                            if (event.isShiftPressed) return@onPreviewKeyEvent false
+                                            sendMessage()
+                                            true
+                                        }
+                                    },
                                 textStyle = inputTextStyle,
                                 singleLine = false,
                                 maxLines = 5,
+                                keyboardOptions = KeyboardOptions(
+                                    imeAction = if (enterToSend) ImeAction.Send else ImeAction.Default,
+                                ),
+                                keyboardActions = KeyboardActions(
+                                    onSend = { sendMessage() },
+                                ),
                                 cursorBrush = SolidColor(MaterialTheme.colorScheme.primary),
                                 decorationBox = { innerTextField ->
                                     Box(
@@ -545,11 +583,7 @@ fun ChatInput(
                         .clip(CircleShape)
                         .clickable {
                             if (canSend) {
-                                val plaintext = text.trim().ifBlank { "" }
-                                onSend(plaintext, attachments)
-                                onTextChange("")
-                                attachments = emptyList()
-                                typingHandler.stopTyping()
+                                sendMessage()
                             } else {
                                 scope.launch {
                                     snackbarHostState?.showSnackbar(message = cdVoiceUnavailable)

app/shared/src/commonMain/kotlin/ru/fromchat/ui/chat/ChatScreen.kt

@@ -1075,13 +1075,18 @@ fun ChatScreen(
             Box(
                 modifier = Modifier
                     .fillMaxSize()
-                    .pointerInput(Unit) {
-                        detectTapGestures {
-                            if (contextMenuState.isOpen) {
-                                contextMenuState = contextMenuState.copy(isOpen = false)
+                    .then(
+                        if (contextMenuState.isOpen) {
+                            Modifier.pointerInput(Unit) {
+                                detectTapGestures {
+                                    contextMenuState =
+                                        contextMenuState.copy(isOpen = false)
+                                }
                             }
-                        }
-                    }
+                        } else {
+                            Modifier
+                        },
+                    ),
             ) {
                 if (panelState.isLoading && panelState.messages.isEmpty()) {
                     Box(

app/shared/src/commonMain/kotlin/ru/fromchat/ui/chat/ChatTextSelectionMenu.kt

@@ -0,0 +1,10 @@
+package ru.fromchat.ui.chat
+
+import androidx.compose.runtime.Composable
+
+/**
+ * On desktop, provides a [MessageContextMenu]-styled text selection menu (copy, etc.).
+ * On touch targets this is a no-op passthrough.
+ */
+@Composable
+internal expect fun ProvideChatTextSelectionMenu(content: @Composable () -> Unit)

app/shared/src/commonMain/kotlin/ru/fromchat/ui/chat/MessageContextMenu.kt

@@ -317,15 +317,114 @@ private fun ContextMenuContent(
     transformOriginX: Float = 0f,
     transformOriginY: Float = 0f,
 ) {
-    val menuShape = RoundedCornerShape(16.dp)
     val menuScrollState = rememberScrollState()
+    val labelReply = stringResource(Res.string.action_reply)
+    val labelEdit = stringResource(Res.string.action_edit)
+    val labelDelete = stringResource(Res.string.action_delete)
+    val labelCopy = stringResource(Res.string.action_copy)
+    val labelSave = stringResource(Res.string.action_save)
+    val labelCancelSend = stringResource(Res.string.action_cancel_send)
+    val labelRetrySend = stringResource(Res.string.action_retry_send)
+    val isQueued = message.isQueuedOutbound() && isAuthor
+    val sendFailed = isQueued && !message.uploadError.isNullOrBlank()
+    val canSave = resolveSavableMessageImage(message) != null ||
+        resolveSavableMessageFile(message) != null
+
+    ChatStyleContextMenuFrame(
+        modifier = modifier,
+        animated = animated,
+        withShadow = withShadow,
+        scale = scale,
+        alpha = alpha,
+        transformOriginX = transformOriginX,
+        transformOriginY = transformOriginY,
+    ) {
+        Column(
+            modifier = Modifier
+                .padding(horizontal = 8.dp, vertical = 8.dp)
+                .verticalScroll(menuScrollState),
+            verticalArrangement = Arrangement.spacedBy(2.dp),
+        ) {
+            if (!message.isContentCorrupted) {
+                ChatStyleContextMenuItem(
+                    icon = Icons.Rounded.ContentCopy,
+                    text = labelCopy,
+                    onClick = { onCopy(message) },
+                )
+            }
+            if (canSave) {
+                ChatStyleContextMenuItem(
+                    icon = Icons.Rounded.SaveAlt,
+                    text = labelSave,
+                    onClick = { onSave(message) },
+                )
+            }
+            if (sendFailed) {
+                ChatStyleContextMenuItem(
+                    icon = Icons.Rounded.Refresh,
+                    text = labelRetrySend,
+                    onClick = { onRetrySend(message) },
+                )
+                ChatStyleContextMenuItem(
+                    icon = Icons.Rounded.Close,
+                    text = labelCancelSend,
+                    onClick = { onCancelSend(message) },
+                    isError = true,
+                )
+            } else if (isQueued) {
+                ChatStyleContextMenuItem(
+                    icon = Icons.Rounded.Close,
+                    text = labelCancelSend,
+                    onClick = { onCancelSend(message) },
+                    isError = true,
+                )
+            } else if (!isReadOnly) {
+                ChatStyleContextMenuItem(
+                    icon = Icons.AutoMirrored.Rounded.Reply,
+                    text = labelReply,
+                    onClick = { onReply(message) },
+                )
+                if (isAuthor && !message.isContentCorrupted) {
+                    ChatStyleContextMenuItem(
+                        icon = Icons.Rounded.Edit,
+                        text = labelEdit,
+                        onClick = { onEdit(message) },
+                    )
+                }
+                if (canDelete) {
+                    ChatStyleContextMenuItem(
+                        icon = Icons.Rounded.Delete,
+                        text = labelDelete,
+                        onClick = { onDelete(message) },
+                        isError = true,
+                    )
+                }
+            }
+        }
+    }
+}
+
+private val chatStyleMenuItemShape = RoundedCornerShape(12.dp)
+
+/** Shared chrome for message + text-selection context menus. */
+@Composable
+internal fun ChatStyleContextMenuFrame(
+    modifier: Modifier = Modifier,
+    animated: Boolean = false,
+    withShadow: Boolean = true,
+    scale: Float = 1f,
+    alpha: Float = 1f,
+    transformOriginX: Float = 0f,
+    transformOriginY: Float = 0f,
+    content: @Composable () -> Unit,
+) {
+    val menuShape = RoundedCornerShape(16.dp)
     val density = LocalDensity.current
     val shadowElevationPx = if (withShadow) {
         with(density) { 12.dp.toPx() }
     } else {
         0f
     }
-
     val baseModifier = modifier.width(IntrinsicSize.Max)
     val containerModifier =
         if (animated) {
@@ -336,150 +435,78 @@ private fun ContextMenuContent(
                 transformOrigin = TransformOrigin(transformOriginX, transformOriginY),
                 shadowElevation = shadowElevationPx,
                 shape = menuShape,
-                clip = true
+                clip = true,
             )
         } else {
             baseModifier.graphicsLayer(
                 shadowElevation = shadowElevationPx,
                 shape = menuShape,
-                clip = true
+                clip = true,
             )
         }
 
-    val menuColor = MaterialTheme.colorScheme.surfaceContainer
-    val edgePadding = 8.dp
-    val itemSpacing = 2.dp
-    val labelReply = stringResource(Res.string.action_reply)
-    val labelEdit = stringResource(Res.string.action_edit)
-    val labelDelete = stringResource(Res.string.action_delete)
-    val labelCopy = stringResource(Res.string.action_copy)
-    val labelSave = stringResource(Res.string.action_save)
-    val labelCancelSend = stringResource(Res.string.action_cancel_send)
-    val labelRetrySend = stringResource(Res.string.action_retry_send)
-    val isQueued = message.isQueuedOutbound() && isAuthor
-    val sendFailed = isQueued && !message.uploadError.isNullOrBlank()
-    val savableImage = resolveSavableMessageImage(message)
-    val savableFile = resolveSavableMessageFile(message)
-    val canSave = savableImage != null || savableFile != null
-
     Box(modifier = containerModifier) {
-        Box(modifier = Modifier.matchParentSize().background(menuColor, menuShape))
-        Column(
+        Box(
             modifier = Modifier
-                .padding(horizontal = edgePadding, vertical = edgePadding)
-                .verticalScroll(menuScrollState),
-            verticalArrangement = Arrangement.spacedBy(itemSpacing)
-        ) {
-            if (!message.isContentCorrupted) {
-                ContextMenuItem(
-                    icon = Icons.Rounded.ContentCopy,
-                    text = labelCopy,
-                    onClick = { onCopy(message) }
-                )
-            }
-            if (canSave) {
-                ContextMenuItem(
-                    icon = Icons.Rounded.SaveAlt,
-                    text = labelSave,
-                    onClick = { onSave(message) }
-                )
-            }
-            if (sendFailed) {
-                ContextMenuItem(
-                    icon = Icons.Rounded.Refresh,
-                    text = labelRetrySend,
-                    onClick = { onRetrySend(message) },
-                )
-                ContextMenuItem(
-                    icon = Icons.Rounded.Close,
-                    text = labelCancelSend,
-                    onClick = { onCancelSend(message) },
-                    isError = true,
-                )
-            } else if (isQueued) {
-                ContextMenuItem(
-                    icon = Icons.Rounded.Close,
-                    text = labelCancelSend,
-                    onClick = { onCancelSend(message) },
-                    isError = true
-                )
-            } else if (!isReadOnly) {
-                ContextMenuItem(
-                    icon = Icons.AutoMirrored.Rounded.Reply,
-                    text = labelReply,
-                    onClick = { onReply(message) }
-                )
-                if (isAuthor && !message.isContentCorrupted) {
-                    ContextMenuItem(
-                        icon = Icons.Rounded.Edit,
-                        text = labelEdit,
-                        onClick = { onEdit(message) }
-                    )
-                }
-                if (canDelete) {
-                    ContextMenuItem(
-                        icon = Icons.Rounded.Delete,
-                        text = labelDelete,
-                        onClick = { onDelete(message) },
-                        isError = true
-                    )
-                }
-            }
-        }
+                .matchParentSize()
+                .background(MaterialTheme.colorScheme.surfaceContainer, menuShape),
+        )
+        content()
     }
 }
 
-private val itemShape = RoundedCornerShape(12.dp)
-
 @Composable
-private fun ContextMenuItem(
+internal fun ChatStyleContextMenuItem(
     icon: ImageVector,
     text: String,
     onClick: () -> Unit,
     isError: Boolean = false,
-    modifier: Modifier = Modifier
+    enabled: Boolean = true,
+    modifier: Modifier = Modifier,
 ) {
-    val textColor = if (isError) {
-        MaterialTheme.colorScheme.error
-    } else {
-        MaterialTheme.colorScheme.onSurface
-    }
-    val iconColor = if (isError) {
-        MaterialTheme.colorScheme.error
-    } else {
-        MaterialTheme.colorScheme.onSurface
+    val textColor = when {
+        !enabled -> MaterialTheme.colorScheme.onSurface.copy(alpha = 0.38f)
+        isError -> MaterialTheme.colorScheme.error
+        else -> MaterialTheme.colorScheme.onSurface
     }
+    val iconColor = textColor
     Box(
         modifier = modifier
             .fillMaxWidth()
             .padding(4.dp)
-            .clip(itemShape)
-            .scaleOnPress(
-                scale = 0.96f,
-                onClick = onClick,
-                indication = LocalIndication.current,
-                animationSpec = spring(
-                    dampingRatio = Spring.DampingRatioMediumBouncy,
-                    stiffness = Spring.StiffnessMedium,
-                ),
+            .clip(chatStyleMenuItemShape)
+            .then(
+                if (enabled) {
+                    Modifier.scaleOnPress(
+                        scale = 0.96f,
+                        onClick = onClick,
+                        indication = LocalIndication.current,
+                        animationSpec = spring(
+                            dampingRatio = Spring.DampingRatioMediumBouncy,
+                            stiffness = Spring.StiffnessMedium,
+                        ),
+                    )
+                } else {
+                    Modifier
+                },
             )
             .padding(horizontal = 12.dp, vertical = 8.dp),
-        contentAlignment = Alignment.CenterStart
+        contentAlignment = Alignment.CenterStart,
     ) {
         Row(
             horizontalArrangement = Arrangement.spacedBy(16.dp),
-            verticalAlignment = Alignment.CenterVertically
+            verticalAlignment = Alignment.CenterVertically,
         ) {
             Icon(
                 imageVector = icon,
                 contentDescription = text,
                 tint = iconColor,
-                modifier = Modifier.size(20.dp)
+                modifier = Modifier.size(20.dp),
             )
             Text(
                 text = text,
                 style = MaterialTheme.typography.bodyMedium,
-                color = textColor
+                color = textColor,
             )
         }
     }

app/shared/src/commonMain/kotlin/ru/fromchat/ui/chat/MessageItem.kt

@@ -11,6 +11,7 @@ import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
 import androidx.compose.animation.shrinkVertically
 import androidx.compose.foundation.background
+import androidx.compose.foundation.gestures.awaitEachGesture
 import androidx.compose.foundation.gestures.detectTapGestures
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -46,18 +47,16 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.geometry.Rect
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.TransformOrigin
 import androidx.compose.ui.graphics.graphicsLayer
-import androidx.compose.ui.input.pointer.PointerEventPass
-import androidx.compose.ui.input.pointer.PointerEventType
+import androidx.compose.ui.input.pointer.AwaitPointerEventScope
+import androidx.compose.ui.input.pointer.PointerEvent
+import androidx.compose.ui.input.pointer.changedToDown
 import androidx.compose.ui.input.pointer.isSecondaryPressed
 import androidx.compose.ui.input.pointer.pointerInput
 import androidx.compose.ui.layout.LayoutCoordinates
-import androidx.compose.ui.layout.boundsInRoot
 import androidx.compose.ui.layout.layout
 import androidx.compose.ui.layout.onGloballyPositioned
-import androidx.compose.ui.layout.positionInRoot
 import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.semantics.contentDescription
 import androidx.compose.ui.semantics.semantics
@@ -65,6 +64,7 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import androidx.compose.ui.util.fastAll
 import kotlin.math.roundToInt
 import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.launch
@@ -115,6 +115,37 @@ private fun isMessageCorrupted(message: Message): Boolean {
     }
 }
 
+/** First pointer-down event; does not require the press to be unconsumed. */
+private suspend fun AwaitPointerEventScope.awaitEventFirstDown(): PointerEvent {
+    var event: PointerEvent
+    do {
+        event = awaitPointerEvent()
+    } while (!event.changes.fastAll { it.changedToDown() })
+    return event
+}
+
+/**
+ * Secondary-click only. Primary clicks pass through so [SelectionContainer] can select text.
+ * Skips already-consumed presses (e.g. text-selection context menu).
+ */
+private fun Modifier.onMouseSecondaryClick(
+    key: Any?,
+    enabled: Boolean,
+    onSecondaryClick: (localOffset: Offset) -> Unit,
+): Modifier {
+    if (!enabled) return this
+    return pointerInput(key) {
+        awaitEachGesture {
+            val event = awaitEventFirstDown()
+            if (!event.buttons.isSecondaryPressed) return@awaitEachGesture
+            val change = event.changes.firstOrNull() ?: return@awaitEachGesture
+            if (change.isConsumed) return@awaitEachGesture
+            event.changes.forEach { it.consume() }
+            onSecondaryClick(change.position)
+        }
+    }
+}
+
 /**
  * Scales layout height with the exit animation so the list collapses in real time.
  */
@@ -470,27 +501,22 @@ fun MessageItem(
 
         val mouseMessageUi = supportsMouseMessageInteraction()
 
+        val openMessageMenu: (LayoutCoordinates?, Offset) -> Unit = { coords, localOffset ->
+            if (coords != null && coords.isAttached) {
+                onTapPosition(coords.localToRoot(localOffset))
+            }
+            isPressed = true
+            onLongPress()
+        }
+
         val rowLongPress =
             if (isContextMenuOpen) Modifier
-            else Modifier.pointerInput(message.id, onLongPress, mouseMessageUi) {
-                if (mouseMessageUi) {
-                    awaitPointerEventScope {
-                        while (true) {
-                            val event = awaitPointerEvent(PointerEventPass.Main)
-                            if (event.type == PointerEventType.Press &&
-                                event.buttons.isSecondaryPressed
-                            ) {
-                                event.changes.forEach { it.consume() }
-                                val local = event.changes.firstOrNull()?.position ?: continue
-                                val coords = rowLayoutCoords
-                                if (coords != null && coords.isAttached) {
-                                    onTapPosition(coords.localToRoot(local))
-                                }
-                                onLongPress()
-                            }
-                        }
-                    }
-                } else {
+            else if (mouseMessageUi) {
+                Modifier.onMouseSecondaryClick(message.id, enabled = true) { localOffset ->
+                    openMessageMenu(rowLayoutCoords, localOffset)
+                }
+            } else {
+                Modifier.pointerInput(message.id, onLongPress) {
                     detectTapGestures(
                         onPress = {
                             isPressed = true
@@ -501,11 +527,7 @@ fun MessageItem(
                             }
                         },
                         onLongPress = { localOffset ->
-                            val coords = rowLayoutCoords
-                            if (coords != null && coords.isAttached) {
-                                onTapPosition(coords.localToRoot(localOffset))
-                            }
-                            onLongPress()
+                            openMessageMenu(rowLayoutCoords, localOffset)
                         },
                     )
                 }
@@ -614,49 +636,40 @@ fun MessageItem(
                         if (isContextMenuOpen) Modifier
                         else Modifier
                             .onGloballyPositioned { bubbleContentCoords = it }
-                            .pointerInput(message.id, onBubbleTap, onLongPress, mouseMessageUi) {
+                            .then(
                                 if (mouseMessageUi) {
-                                    awaitPointerEventScope {
-                                        while (true) {
-                                            val event = awaitPointerEvent(PointerEventPass.Main)
-                                            when {
-                                                event.type == PointerEventType.Press &&
-                                                    event.buttons.isSecondaryPressed -> {
-                                                    event.changes.forEach { it.consume() }
-                                                    val local =
-                                                        event.changes.firstOrNull()?.position
-                                                            ?: continue
-                                                    val coords = bubbleContentCoords
-                                                    if (coords != null && coords.isAttached) {
-                                                        onTapPosition(coords.localToRoot(local))
-                                                    }
-                                                    isPressed = true
-                                                    onLongPress()
-                                                }
-                                            }
-                                        }
+                                    Modifier.onMouseSecondaryClick(
+                                        message.id,
+                                        enabled = true,
+                                    ) { localOffset ->
+                                        openMessageMenu(bubbleContentCoords, localOffset)
                                     }
                                 } else {
-                                    detectTapGestures(
-                                        onPress = {
-                                            isPressed = true
-                                            try {
-                                                awaitRelease()
-                                            } finally {
-                                                isPressed = false
-                                            }
-                                        },
-                                        onTap = { onBubbleTap?.invoke() },
-                                        onLongPress = { localOffset ->
-                                            val coords = bubbleContentCoords
-                                            if (coords != null && coords.isAttached) {
-                                                onTapPosition(coords.localToRoot(localOffset))
-                                            }
-                                            onLongPress()
-                                        },
-                                    )
-                                }
-                            }
+                                    Modifier.pointerInput(
+                                        message.id,
+                                        onBubbleTap,
+                                        onLongPress,
+                                    ) {
+                                        detectTapGestures(
+                                            onPress = {
+                                                isPressed = true
+                                                try {
+                                                    awaitRelease()
+                                                } finally {
+                                                    isPressed = false
+                                                }
+                                            },
+                                            onTap = { onBubbleTap?.invoke() },
+                                            onLongPress = { localOffset ->
+                                                openMessageMenu(
+                                                    bubbleContentCoords,
+                                                    localOffset,
+                                                )
+                                            },
+                                        )
+                                    }
+                                },
+                            )
 
                     Box {
                         Column(
@@ -697,11 +710,23 @@ fun MessageItem(
                                         Modifier.padding(start = 8.dp, end = 8.dp, bottom = 4.dp)
                                     val usernameInset =
                                         Modifier.padding(horizontal = 4.dp, vertical = 2.dp)
-                                    if (onUsernameClick != null) {
-                                        Box(
-                                            modifier = usernameOutset
-                                                .clip(usernameShape)
-                                                .pointerInput(message.id, onUsernameClick) {
+                                    val usernameGestures =
+                                        if (mouseMessageUi) {
+                                            Modifier
+                                                .onMouseSecondaryClick(
+                                                    message.id,
+                                                    enabled = !isContextMenuOpen,
+                                                ) { localOffset ->
+                                                    openMessageMenu(
+                                                        rowLayoutCoords,
+                                                        localOffset,
+                                                    )
+                                                }
+                                                .pointerInput(
+                                                    message.id,
+                                                    onUsernameClick,
+                                                    onBubbleTap,
+                                                ) {
                                                     detectTapGestures(
                                                         onPress = {
                                                             isPressed = true
@@ -711,25 +736,56 @@ fun MessageItem(
                                                                 isPressed = false
                                                             }
                                                         },
-                                                        onTap = { onUsernameClick.invoke() },
-                                                        onLongPress = {
-                                                            val coords = bubbleContentCoords
-                                                            if (
-                                                                coords != null &&
-                                                                coords.isAttached
-                                                            ) {
-                                                                val center = Offset(
-                                                                    coords.size.width / 2f,
-                                                                    coords.size.height / 2f,
-                                                                )
-                                                                onTapPosition(
-                                                                    coords.localToRoot(center),
-                                                                )
-                                                            }
-                                                            onLongPress()
+                                                        onTap = {
+                                                            onUsernameClick?.invoke()
+                                                                ?: onBubbleTap?.invoke()
                                                         },
                                                     )
                                                 }
+                                        } else {
+                                            Modifier.pointerInput(
+                                                message.id,
+                                                onUsernameClick,
+                                                onBubbleTap,
+                                                onLongPress,
+                                            ) {
+                                                detectTapGestures(
+                                                    onPress = {
+                                                        isPressed = true
+                                                        try {
+                                                            awaitRelease()
+                                                        } finally {
+                                                            isPressed = false
+                                                        }
+                                                    },
+                                                    onTap = {
+                                                        onUsernameClick?.invoke()
+                                                            ?: onBubbleTap?.invoke()
+                                                    },
+                                                    onLongPress = {
+                                                        val coords = bubbleContentCoords
+                                                        if (
+                                                            coords != null &&
+                                                            coords.isAttached
+                                                        ) {
+                                                            val center = Offset(
+                                                                coords.size.width / 2f,
+                                                                coords.size.height / 2f,
+                                                            )
+                                                            onTapPosition(
+                                                                coords.localToRoot(center),
+                                                            )
+                                                        }
+                                                        onLongPress()
+                                                    },
+                                                )
+                                            }
+                                        }
+                                    if (onUsernameClick != null) {
+                                        Box(
+                                            modifier = usernameOutset
+                                                .clip(usernameShape)
+                                                .then(usernameGestures),
                                         ) {
                                             Row(
                                                 verticalAlignment = Alignment.CenterVertically,
@@ -750,36 +806,7 @@ fun MessageItem(
                                         }
                                     } else {
                                         Box(
-                                            modifier = usernameOutset
-                                                .pointerInput(message.id, onBubbleTap) {
-                                                    detectTapGestures(
-                                                        onPress = {
-                                                            isPressed = true
-                                                            try {
-                                                                awaitRelease()
-                                                            } finally {
-                                                                isPressed = false
-                                                            }
-                                                        },
-                                                        onTap = { onBubbleTap?.invoke() },
-                                                        onLongPress = {
-                                                            val coords = bubbleContentCoords
-                                                            if (
-                                                                coords != null &&
-                                                                coords.isAttached
-                                                            ) {
-                                                                val center = Offset(
-                                                                    coords.size.width / 2f,
-                                                                    coords.size.height / 2f,
-                                                                )
-                                                                onTapPosition(
-                                                                    coords.localToRoot(center),
-                                                                )
-                                                            }
-                                                            onLongPress()
-                                                        },
-                                                    )
-                                                },
+                                            modifier = usernameOutset.then(usernameGestures),
                                         ) {
                                             Row(
                                                 verticalAlignment = Alignment.CenterVertically,
@@ -1079,13 +1106,17 @@ fun MessageItem(
                                             !isFilenameOnlyMessageCaption(message)
                                         ) {
                                             if (mouseMessageUi) {
-                                                SelectionContainer {
-                                                    Text(
-                                                        text = message.content,
-                                                        style = MaterialTheme.typography.bodyLarge,
-                                                        color = contentColor,
-                                                        modifier = Modifier.padding(horizontal = 14.dp)
-                                                    )
+                                                ProvideChatTextSelectionMenu {
+                                                    SelectionContainer {
+                                                        Text(
+                                                            text = message.content,
+                                                            style = MaterialTheme.typography.bodyLarge,
+                                                            color = contentColor,
+                                                            modifier = Modifier.padding(
+                                                                horizontal = 14.dp,
+                                                            ),
+                                                        )
+                                                    }
                                                 }
                                             } else {
                                                 Text(

app/shared/src/commonMain/kotlin/ru/fromchat/ui/chat/panels/dm/DmNav.kt

@@ -8,9 +8,10 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
+import androidx.navigation.NavController
+import androidx.navigation.NavOptionsBuilder
 import ru.fromchat.api.local.cache.CacheContext
 import androidx.compose.ui.Modifier
-import androidx.navigation.NavController
 import ru.fromchat.api.local.db.store.ProfileCache
 import ru.fromchat.ui.chat.rememberChatNavigationGate
 import ru.fromchat.utils.haptic.HapticFeedbackEvent
@@ -33,6 +34,22 @@ object DmNav {
     fun profileRoute(otherUserId: Int) = "dm/$otherUserId/profile"
 }
 
+/**
+ * Opens a DM chat, replacing any prior conversation/profile above the main `chat` root
+ * so large-screen switches do not stack previous chats.
+ */
+fun NavController.navigateToDmChat(
+    otherUserId: Int,
+    sourceMessageId: Int? = null,
+    builder: NavOptionsBuilder.() -> Unit = {},
+) {
+    navigate(DmNav.chatRoute(otherUserId, sourceMessageId)) {
+        popUpTo("chat") { saveState = true }
+        launchSingleTop = true
+        builder()
+    }
+}
+
 private const val DM_AVATAR_KEY_PREFIX = "dm-avatar-"
 
 @Composable
@@ -105,7 +122,7 @@ fun DmProfileRoute(
         onChat = {
             runNav {
                 haptic(HapticFeedbackEvent.ProfileClosed)
-                navController.popBackStack()
+                navController.navigateToDmChat(otherUserId)
             }
         },
         modifier = modifier.fillMaxSize(),

app/shared/src/commonMain/kotlin/ru/fromchat/ui/chat/panels/publicchat/PublicChatNav.kt

@@ -7,6 +7,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.navigation.NavController
+import androidx.navigation.NavOptionsBuilder
 import ru.fromchat.api.ApiClient
 import ru.fromchat.api.local.db.store.PublicChatProfileCache
 import ru.fromchat.ui.chat.rememberChatNavigationGate
@@ -23,6 +24,19 @@ object PublicChatNav {
     const val SHARED_HEADER_KEY = "public-chat-header"
 }
 
+/**
+ * Opens the public chat, replacing any prior conversation/profile above the main `chat` root.
+ */
+fun NavController.navigateToPublicChat(
+    builder: NavOptionsBuilder.() -> Unit = {},
+) {
+    navigate(PublicChatNav.CHAT_ROUTE) {
+        popUpTo("chat") { saveState = true }
+        launchSingleTop = true
+        builder()
+    }
+}
+
 @Composable
 fun PublicChatChatRoute(
     scrollToMessageId: Int? = null,
@@ -78,7 +92,7 @@ fun PublicChatProfileRoute(
         onChat = {
             runNav {
                 haptic(HapticFeedbackEvent.ProfileClosed)
-                navController.popBackStack()
+                navController.navigateToPublicChat()
             }
         },
         modifier = modifier.fillMaxSize(),

app/shared/src/commonMain/kotlin/ru/fromchat/ui/components/AppPanel.kt

@@ -0,0 +1,36 @@
+package ru.fromchat.ui.components
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.BoxScope
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.unit.dp
+
+/**
+ * Rounded lowest-surface container for list–detail panes and other full-area content.
+ * Size with [modifier]; content fills the panel.
+ */
+@Composable
+fun AppPanel(
+    modifier: Modifier = Modifier,
+    color: Color = MaterialTheme.colorScheme.surfaceContainerLowest,
+    shape: Shape = RoundedCornerShape(24.dp),
+    content: @Composable BoxScope.() -> Unit,
+) {
+    Surface(
+        modifier = modifier,
+        shape = shape,
+        color = color,
+    ) {
+        Box(
+            modifier = Modifier.fillMaxSize(),
+            content = content,
+        )
+    }
+}

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/ContactsTab.kt

@@ -4,6 +4,7 @@ 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.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
@@ -21,29 +22,44 @@ import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Surface
 import ru.fromchat.ui.components.Text
 import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import org.jetbrains.compose.resources.stringResource
 import ru.fromchat.Res
-import ru.fromchat.*
+import ru.fromchat.contacts
+import ru.fromchat.contacts_empty_body
+import ru.fromchat.contacts_empty_title
+import ru.fromchat.ui.extraStatusBars
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun ContactsTab() {
     Scaffold(
+        containerColor = Color.Transparent,
+        contentWindowInsets = WindowInsets(0, 0, 0, 0),
         topBar = {
             TopAppBar(
+                windowInsets = if (LocalMainChromeInsets.current.top > 0.dp) {
+                    WindowInsets.extraStatusBars
+                } else {
+                    WindowInsets(0, 0, 0, 0)
+                },
                 title = {
                     Text(
                         text = stringResource(Res.string.contacts),
                         maxLines = 1,
                         overflow = TextOverflow.Ellipsis
                     )
-                }
+                },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = Color.Transparent,
+                ),
             )
         }
     ) { innerPadding ->

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/ConversationListDetailShell.kt

@@ -1,195 +1,116 @@
 package ru.fromchat.ui.main
 
 import androidx.compose.animation.AnimatedVisibility
-import androidx.compose.animation.core.CubicBezierEasing
+import androidx.compose.animation.core.FastOutSlowInEasing
 import androidx.compose.animation.core.tween
-import androidx.compose.animation.slideInHorizontally
-import androidx.compose.animation.slideOutHorizontally
-import androidx.compose.foundation.background
+import androidx.compose.animation.expandHorizontally
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.shrinkHorizontally
+import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.BoxWithConstraints
-import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.WindowInsets
-import androidx.compose.foundation.layout.WindowInsetsSides
+import androidx.compose.foundation.layout.consumeWindowInsets
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.imePadding
-import androidx.compose.foundation.layout.navigationBars
-import androidx.compose.foundation.layout.only
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.safeDrawing
+import androidx.compose.foundation.layout.union
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.layout.widthIn
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.automirrored.filled.Chat
-import androidx.compose.material.icons.filled.Contacts
-import androidx.compose.material.icons.filled.Person
-import androidx.compose.material.icons.filled.Settings
-import androidx.compose.material3.Icon
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.NavigationBar
-import androidx.compose.material3.NavigationBarItem
-import androidx.compose.material3.VerticalDivider
+import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.IntSize
 import androidx.compose.ui.unit.dp
-import com.pr0gramm3r101.utils.NavigationItem
-import com.pr0gramm3r101.utils.SimpleNavigationRail
-import com.pr0gramm3r101.utils.WindowWidthSizeClass
-import org.jetbrains.compose.resources.stringResource
-import ru.fromchat.Res
-import ru.fromchat.chats
-import ru.fromchat.contacts
-import ru.fromchat.profile
-import ru.fromchat.settings
-import ru.fromchat.ui.components.Text
+import ru.fromchat.ui.components.AppPanel
+import ru.fromchat.ui.extraStatusBars
 
 /** Minimum width to show chat + profile side-by-side beside the list. */
 val ConversationProfileThirdPaneMinWidth = 1100.dp
 
-private val ProfilePaneSlideEasing = CubicBezierEasing(0.22f, 1f, 0.36f, 1f)
-private const val ProfilePaneAnimMs = 520
+private const val ProfilePaneAnimMs = 280
 
+/**
+ * List–detail (optional profile) shell. The list pane uses [AppPanel]; detail and profile
+ * panes stay plain (no rounded surface wrapper). Spacing alone separates panes.
+ *
+ * Pads with [WindowInsets.safeDrawing] ∪ [WindowInsets.extraStatusBars] so panes clear the
+ * macOS title bar / system bars, then consumes those insets so child top bars do not double-pad.
+ * Window background stays edge-to-edge behind this layer.
+ */
 @Composable
 fun ConversationListDetailShell(
-    widthSizeClass: WindowWidthSizeClass,
     showProfilePane: Boolean,
+    listPaneWidth: Dp,
     listPane: @Composable () -> Unit,
     detailPane: @Composable () -> Unit,
     profilePane: @Composable () -> Unit,
-    onSelectMainTab: (Int) -> Unit,
     modifier: Modifier = Modifier,
 ) {
-    val useRail = widthSizeClass == WindowWidthSizeClass.EXPANDED
-    val chatsLabel = stringResource(Res.string.chats)
-    val contactsLabel = stringResource(Res.string.contacts)
-    val settingsLabel = stringResource(Res.string.settings)
-    val profileLabel = stringResource(Res.string.profile)
-
     BoxWithConstraints(modifier.fillMaxSize()) {
-        val canFitProfilePane = maxWidth >= ConversationProfileThirdPaneMinWidth
-        val profileVisible = showProfilePane && canFitProfilePane
+        val profileVisible = showProfilePane && maxWidth >= ConversationProfileThirdPaneMinWidth
+        val fadeAnim = tween<Float>(
+            durationMillis = ProfilePaneAnimMs,
+            easing = FastOutSlowInEasing,
+        )
+        val sizeAnim = tween<IntSize>(
+            durationMillis = ProfilePaneAnimMs,
+            easing = FastOutSlowInEasing,
+        )
+        val paneInsets = WindowInsets.safeDrawing.union(WindowInsets.extraStatusBars)
 
-        Row(Modifier.fillMaxSize()) {
-            if (useRail) {
-                SimpleNavigationRail(
-                    selectedItem = MAIN_PAGE_CHATS,
-                    modifier = Modifier.fillMaxHeight(),
-                    NavigationItem(
-                        name = chatsLabel,
-                        selectedIcon = Icons.AutoMirrored.Filled.Chat,
-                        onClick = { onSelectMainTab(MAIN_PAGE_CHATS) },
-                    ),
-                    NavigationItem(
-                        name = contactsLabel,
-                        selectedIcon = Icons.Filled.Contacts,
-                        onClick = { onSelectMainTab(MAIN_PAGE_CONTACTS) },
-                    ),
-                    NavigationItem(
-                        name = settingsLabel,
-                        selectedIcon = Icons.Filled.Settings,
-                        onClick = { onSelectMainTab(MAIN_PAGE_SETTINGS) },
-                    ),
-                    NavigationItem(
-                        name = profileLabel,
-                        selectedIcon = Icons.Filled.Person,
-                        onClick = { onSelectMainTab(MAIN_PAGE_PROFILE) },
-                    ),
-                )
+        Row(
+            Modifier
+                .fillMaxSize()
+                .windowInsetsPadding(paneInsets)
+                .consumeWindowInsets(paneInsets)
+                .padding(8.dp),
+            horizontalArrangement = Arrangement.spacedBy(8.dp),
+        ) {
+            AppPanel(
+                Modifier
+                    .width(listPaneWidth)
+                    .fillMaxHeight(),
+            ) {
+                listPane()
             }
-
-            Column(Modifier.weight(1f).fillMaxHeight()) {
-                Row(Modifier.weight(1f).fillMaxWidth()) {
-                    Box(
-                        Modifier
-                            .width(360.dp)
-                            .fillMaxHeight(),
-                    ) {
-                        listPane()
-                    }
-                    VerticalDivider()
-                    Box(
-                        Modifier
-                            .weight(1f)
-                            .fillMaxHeight(),
-                    ) {
-                        detailPane()
-                    }
-                    AnimatedVisibility(
-                        visible = profileVisible,
-                        enter = slideInHorizontally(
-                            animationSpec = tween(
-                                durationMillis = ProfilePaneAnimMs,
-                                easing = ProfilePaneSlideEasing,
-                            ),
-                            initialOffsetX = { it },
-                        ),
-                        exit = slideOutHorizontally(
-                            animationSpec = tween(
-                                durationMillis = ProfilePaneAnimMs,
-                                easing = ProfilePaneSlideEasing,
-                            ),
-                            targetOffsetX = { it },
-                        ),
-                    ) {
-                        Row(Modifier.fillMaxHeight()) {
-                            VerticalDivider()
-                            Box(
-                                Modifier
-                                    .widthIn(min = 320.dp, max = 420.dp)
-                                    .fillMaxHeight()
-                                    .width(380.dp),
-                            ) {
-                                profilePane()
-                            }
-                        }
-                    }
-                }
-
-                if (!useRail) {
-                    NavigationBar(
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .background(MaterialTheme.colorScheme.surfaceContainer)
-                            .imePadding(),
-                        containerColor = Color.Transparent,
-                        tonalElevation = 0.dp,
-                        windowInsets = WindowInsets.navigationBars.only(WindowInsetsSides.Bottom),
-                    ) {
-                        NavigationBarItem(
-                            selected = true,
-                            onClick = { onSelectMainTab(MAIN_PAGE_CHATS) },
-                            label = { Text(chatsLabel) },
-                            icon = {
-                                Icon(Icons.AutoMirrored.Filled.Chat, contentDescription = null)
-                            },
-                        )
-                        NavigationBarItem(
-                            selected = false,
-                            onClick = { onSelectMainTab(MAIN_PAGE_CONTACTS) },
-                            label = { Text(contactsLabel) },
-                            icon = {
-                                Icon(Icons.Filled.Contacts, contentDescription = null)
-                            },
-                        )
-                        NavigationBarItem(
-                            selected = false,
-                            onClick = { onSelectMainTab(MAIN_PAGE_SETTINGS) },
-                            label = { Text(settingsLabel) },
-                            icon = {
-                                Icon(Icons.Filled.Settings, contentDescription = null)
-                            },
-                        )
-                        NavigationBarItem(
-                            selected = false,
-                            onClick = { onSelectMainTab(MAIN_PAGE_PROFILE) },
-                            label = { Text(profileLabel) },
-                            icon = {
-                                Icon(Icons.Filled.Person, contentDescription = null)
-                            },
-                        )
-                    }
+            Box(
+                Modifier
+                    .weight(1f)
+                    .fillMaxHeight(),
+            ) {
+                detailPane()
+            }
+            AnimatedVisibility(
+                visible = profileVisible,
+                enter = fadeIn(animationSpec = fadeAnim) + expandHorizontally(
+                    animationSpec = sizeAnim,
+                    expandFrom = Alignment.End,
+                    clip = false,
+                ),
+                exit = fadeOut(
+                    animationSpec = tween(
+                        durationMillis = 220,
+                        easing = FastOutSlowInEasing,
+                    ),
+                ) + shrinkHorizontally(
+                    animationSpec = sizeAnim,
+                    shrinkTowards = Alignment.End,
+                    clip = false,
+                ),
+            ) {
+                Box(
+                    Modifier
+                        .widthIn(min = 320.dp, max = 420.dp)
+                        .width(380.dp)
+                        .fillMaxHeight(),
+                ) {
+                    profilePane()
                 }
             }
         }

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/EmptyConversationPlaceholder.kt

@@ -14,27 +14,57 @@ import androidx.compose.ui.unit.dp
 import org.jetbrains.compose.resources.stringResource
 import ru.fromchat.Res
 import ru.fromchat.select_chat_placeholder
+import ru.fromchat.select_contact_placeholder
+import ru.fromchat.select_settings_placeholder
 import ru.fromchat.ui.components.Text
 import ru.fromchat.ui.extraStatusBars
 
+/** Empty detail pane when nothing is selected in a list–detail layout. */
 @Composable
-fun EmptyConversationPlaceholder(modifier: Modifier = Modifier) {
-    val density = LocalDensity.current
-    val topInset = with(density) {
-        WindowInsets.extraStatusBars.getTop(this).toDp()
-    }
+fun EmptyPanePlaceholder(
+    text: String,
+    modifier: Modifier = Modifier,
+) {
     Box(
         modifier = modifier
             .fillMaxSize()
-            .padding(top = topInset)
+            .padding(
+                top = with(LocalDensity.current) {
+                    WindowInsets.extraStatusBars.getTop(this).toDp()
+                },
+            )
             .padding(horizontal = 32.dp),
         contentAlignment = Alignment.Center,
     ) {
         Text(
-            text = stringResource(Res.string.select_chat_placeholder),
+            text = text,
             style = MaterialTheme.typography.bodyLarge,
             color = MaterialTheme.colorScheme.onSurfaceVariant,
             textAlign = TextAlign.Center,
         )
     }
 }
+
+@Composable
+fun EmptyConversationPlaceholder(modifier: Modifier = Modifier) {
+    EmptyPanePlaceholder(
+        text = stringResource(Res.string.select_chat_placeholder),
+        modifier = modifier,
+    )
+}
+
+@Composable
+fun EmptyContactsPlaceholder(modifier: Modifier = Modifier) {
+    EmptyPanePlaceholder(
+        text = stringResource(Res.string.select_contact_placeholder),
+        modifier = modifier,
+    )
+}
+
+@Composable
+fun EmptySettingsPlaceholder(modifier: Modifier = Modifier) {
+    EmptyPanePlaceholder(
+        text = stringResource(Res.string.select_settings_placeholder),
+        modifier = modifier,
+    )
+}

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/MainDetailNav.kt

@@ -0,0 +1,20 @@
+package ru.fromchat.ui.main
+
+import androidx.navigation.NavController
+import androidx.navigation.NavOptionsBuilder
+
+/**
+ * Opens a main-hub detail destination, replacing any prior conversation/settings/profile
+ * above the main `chat` root so large-screen switches do not stack previous panes.
+ * Matches [ru.fromchat.ui.chat.panels.dm.navigateToDmChat] / public chat.
+ */
+fun NavController.navigateReplacingMainDetail(
+    route: String,
+    builder: NavOptionsBuilder.() -> Unit = {},
+) {
+    navigate(route) {
+        popUpTo("chat") { saveState = true }
+        launchSingleTop = true
+        builder()
+    }
+}

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/MainScreen.kt

@@ -6,17 +6,13 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.BoxWithConstraints
 import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.WindowInsetsSides
-import androidx.compose.foundation.layout.asPaddingValues
-import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.imePadding
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.only
-import androidx.compose.foundation.layout.statusBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.pager.HorizontalPager
 import androidx.compose.foundation.pager.rememberPagerState
@@ -47,8 +43,6 @@ import androidx.compose.ui.layout.onSizeChanged
 import androidx.compose.ui.platform.LocalDensity
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.zIndex
-import com.pr0gramm3r101.utils.NavigationItem
-import com.pr0gramm3r101.utils.SimpleNavigationRail
 import com.pr0gramm3r101.utils.WindowWidthSizeClass
 import com.pr0gramm3r101.utils.currentWindowAdaptiveInfo
 import com.pr0gramm3r101.utils.widthSizeClass
@@ -71,12 +65,12 @@ import ru.fromchat.ui.LocalNavController
 import ru.fromchat.ui.chat.rememberChatSurfaceContainerHazeStyle
 import ru.fromchat.ui.components.FromChatSnackbarHost
 import ru.fromchat.ui.components.Text
+import ru.fromchat.ui.extraStatusBars
 import ru.fromchat.ui.main.chats.ChatContextMenuOverlayController
 import ru.fromchat.ui.main.chats.ChatContextMenuOverlayHost
 import ru.fromchat.ui.main.chats.ChatsTab
 import ru.fromchat.ui.main.settings.SettingsTab
 import ru.fromchat.ui.profile.ProfileScreen
-import ru.fromchat.ui.extraStatusBars
 
 const val MAIN_PAGE_CHATS = 0
 const val MAIN_PAGE_CONTACTS = 1
@@ -90,9 +84,12 @@ private const val PAGE_PROFILE = MAIN_PAGE_PROFILE
 private const val PAGE_COUNT = 4
 
 /**
- * @param listPaneOnly When true, renders only the chats list (no nav rail/bar) for use as the
- * list side of a list–detail conversation layout. Host owns navigation chrome.
+ * @param embeddedInListDetail When true, this screen is the left pane of a list–detail layout.
+ * Nav chrome stays inside this pane (bottom bar), never spanning the window.
  * @param initialPage Pager page when showing the full MainScreen.
+ * @param forceSettingsTab When true, scrolls the pager to settings (settings/profile detail open).
+ * Does not snap back when cleared — avoids fighting user tab changes.
+ * @param onPageChanged Invoked when the pager settles on a page (for list–detail empty panes).
  */
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -100,8 +97,10 @@ fun MainScreen(
     sharedTransitionScope: SharedTransitionScope? = null,
     animatedVisibilityScope: AnimatedVisibilityScope? = null,
     snackbarHostState: SnackbarHostState? = null,
-    listPaneOnly: Boolean = false,
+    embeddedInListDetail: Boolean = false,
     initialPage: Int = PAGE_CHATS,
+    forceSettingsTab: Boolean = false,
+    onPageChanged: (Int) -> Unit = {},
 ) {
     val effectiveSnackbarHostState = snackbarHostState ?: remember { SnackbarHostState() }
     val navController = LocalNavController.current
@@ -117,29 +116,34 @@ fun MainScreen(
     val chatContextMenuOverlay = remember { ChatContextMenuOverlayController() }
 
     val widthClass = currentWindowAdaptiveInfo().widthSizeClass
-    // Compact/medium: bottom bar. Expanded: rail. List pane never owns chrome.
-    val useNavigationRail = !listPaneOnly && widthClass == WindowWidthSizeClass.EXPANDED
-    val useBottomBar = !listPaneOnly && !useNavigationRail
 
-    LaunchedEffect(initialPage) {
-        if (!listPaneOnly && pagerState.currentPage != initialPage) {
-            pagerState.scrollToPage(initialPage.coerceIn(0, PAGE_COUNT - 1))
+    LaunchedEffect(forceSettingsTab) {
+        if (forceSettingsTab && pagerState.currentPage != PAGE_SETTINGS) {
+            pagerState.scrollToPage(PAGE_SETTINGS)
         }
     }
 
     val selectedPage = pagerState.currentPage
+    LaunchedEffect(selectedPage) {
+        onPageChanged(selectedPage)
+    }
     val isChatsPage = selectedPage == PAGE_CHATS
     val chatMenuBlurProgress = chatContextMenuOverlay.blurProgress
 
-    val statusBarTop = with(density) {
-        WindowInsets.extraStatusBars.getTop(this).toDp()
+    // List–detail shell already pads/consumes safeDrawing ∪ extraStatusBars; do not re-apply top.
+    val statusBarTop = if (embeddedInListDetail) {
+        0.dp
+    } else {
+        with(density) {
+            WindowInsets.extraStatusBars.getTop(this).toDp()
+        }
     }
     var bottomChromeHeightDp by remember { mutableStateOf(0.dp) }
 
-    val mainChromeInsets = remember(statusBarTop, bottomChromeHeightDp, useNavigationRail, useBottomBar) {
+    val mainChromeInsets = remember(statusBarTop, bottomChromeHeightDp) {
         MainChromeInsets(
             top = statusBarTop,
-            bottom = if (useBottomBar) bottomChromeHeightDp else 0.dp,
+            bottom = bottomChromeHeightDp,
         )
     }
 
@@ -148,71 +152,82 @@ fun MainScreen(
     val settingsLabel = stringResource(Res.string.settings)
     val profileLabel = stringResource(Res.string.profile)
 
-    BoxWithConstraints(Modifier.fillMaxSize()) {
-        Row(Modifier.fillMaxSize()) {
-            if (useNavigationRail) {
-                SimpleNavigationRail(
-                    selectedItem = selectedPage,
-                    modifier = Modifier.fillMaxHeight(),
-                    NavigationItem(
-                        name = chatsLabel,
-                        selectedIcon = Icons.AutoMirrored.Filled.Chat,
-                        onClick = {
-                            scope.launch { pagerState.animateScrollToPage(PAGE_CHATS) }
-                        },
-                    ),
-                    NavigationItem(
-                        name = contactsLabel,
-                        selectedIcon = Icons.Filled.Contacts,
-                        onClick = {
-                            scope.launch { pagerState.animateScrollToPage(PAGE_CONTACTS) }
-                        },
-                    ),
-                    NavigationItem(
-                        name = settingsLabel,
-                        selectedIcon = Icons.Filled.Settings,
-                        onClick = {
-                            scope.launch { pagerState.animateScrollToPage(PAGE_SETTINGS) }
-                        },
-                    ),
-                    NavigationItem(
-                        name = profileLabel,
-                        selectedIcon = Icons.Filled.Person,
-                        onClick = {
-                            scope.launch { pagerState.animateScrollToPage(PAGE_PROFILE) }
-                        },
-                    ),
-                )
-            }
+    fun clearConversationStack() {
+        // Pop above chat only — inclusive pop remounts the chat destination and briefly
+        // drops the shell route, which remounts list–detail ↔ compact and blinks forever.
+        navController.popBackStack("chat", inclusive = false)
+    }
 
-            Box(
+    fun openOwnProfileInDetailPane() {
+        val userId = ApiClient.user?.id?.takeIf { it > 0 } ?: return
+        navController.navigateReplacingMainDetail("profile/$userId")
+    }
+
+    fun selectMainPage(page: Int) {
+        when {
+            page == PAGE_PROFILE && widthClass != WindowWidthSizeClass.COMPACT -> {
+                scope.launch { pagerState.animateScrollToPage(PAGE_SETTINGS) }
+                openOwnProfileInDetailPane()
+            }
+            page == PAGE_CHATS -> {
+                scope.launch { pagerState.animateScrollToPage(PAGE_CHATS) }
+                if (embeddedInListDetail && selectedPage != PAGE_CHATS) {
+                    clearConversationStack()
+                }
+            }
+            else -> {
+                scope.launch { pagerState.animateScrollToPage(page) }
+                if (embeddedInListDetail) {
+                    clearConversationStack()
+                }
+            }
+        }
+    }
+
+    val navSelectedPage =
+        if (selectedPage == PAGE_SETTINGS &&
+            widthClass != WindowWidthSizeClass.COMPACT &&
+            navController.currentBackStackEntry?.destination?.route?.startsWith("profile/") == true
+        ) {
+            PAGE_PROFILE
+        } else {
+            selectedPage
+        }
+
+    BoxWithConstraints(Modifier.fillMaxSize()) {
+        Box(
+            modifier = Modifier
+                .fillMaxSize()
+                .hazeSource(contextMenuHazeState),
+        ) {
+            Scaffold(
+                snackbarHost = {
+                    FromChatSnackbarHost(
+                        hostState = effectiveSnackbarHostState,
+                        modifier = Modifier.padding(bottom = mainChromeInsets.bottom),
+                    )
+                },
+                containerColor = Color.Transparent,
+                contentWindowInsets = WindowInsets(0, 0, 0, 0),
                 modifier = Modifier
-                    .weight(1f)
-                    .fillMaxHeight()
-                    .hazeSource(contextMenuHazeState),
+                    .fillMaxSize()
+                    .imePadding(),
             ) {
-                Scaffold(
-                    snackbarHost = {
-                        FromChatSnackbarHost(
-                            hostState = effectiveSnackbarHostState,
-                            modifier = Modifier.padding(bottom = mainChromeInsets.bottom),
-                        )
-                    },
-                    containerColor = Color.Transparent,
-                    contentWindowInsets = WindowInsets(0, 0, 0, 0),
-                    modifier = Modifier
-                        .fillMaxSize()
-                        .imePadding(),
-                ) {
-                    CompositionLocalProvider(LocalMainChromeInsets provides mainChromeInsets) {
-                        Box(
-                            modifier = Modifier
-                                .fillMaxSize()
-                                .hazeSource(navBarHazeState),
-                        ) {
-                            if (listPaneOnly) {
-                                ChatsTab(
-                                    isVisible = true,
+                CompositionLocalProvider(LocalMainChromeInsets provides mainChromeInsets) {
+                    Box(
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .hazeSource(navBarHazeState),
+                    ) {
+                        HorizontalPager(
+                            state = pagerState,
+                            modifier = Modifier.fillMaxSize(),
+                            beyondViewportPageCount = 1,
+                            userScrollEnabled = widthClass == WindowWidthSizeClass.COMPACT,
+                        ) { page ->
+                            when (page) {
+                                PAGE_CHATS -> ChatsTab(
+                                    isVisible = isChatsPage,
                                     onOpenSearch = {
                                         navController.navigate("search/conversations")
                                     },
@@ -220,118 +235,90 @@ fun MainScreen(
                                     sharedTransitionScope = sharedTransitionScope,
                                     animatedVisibilityScope = animatedVisibilityScope,
                                 )
-                            } else {
-                                HorizontalPager(
-                                    state = pagerState,
-                                    modifier = Modifier.fillMaxSize(),
-                                    beyondViewportPageCount = 1,
-                                ) { page ->
-                                    when (page) {
-                                        PAGE_CHATS -> ChatsTab(
-                                            isVisible = isChatsPage,
-                                            onOpenSearch = {
-                                                navController.navigate("search/conversations")
-                                            },
-                                            chatContextMenuOverlay = chatContextMenuOverlay,
-                                            sharedTransitionScope = sharedTransitionScope,
-                                            animatedVisibilityScope = animatedVisibilityScope,
-                                        )
-                                        PAGE_CONTACTS -> ContactsTab()
-                                        PAGE_SETTINGS -> SettingsTab()
-                                        PAGE_PROFILE -> {
-                                            ProfileScreen(
-                                                userId = ApiClient.user?.id,
-                                                onBack = {},
-                                                onChat = { _ -> },
-                                                modifier = Modifier
-                                                    .fillMaxSize()
-                                                    .mainPagerBottomInset(),
-                                                onOpenSettings = {
-                                                    scope.launch {
-                                                        pagerState.animateScrollToPage(PAGE_SETTINGS)
-                                                    }
-                                                },
-                                            )
-                                        }
-                                        else -> Unit
-                                    }
+                                PAGE_CONTACTS -> ContactsTab()
+                                PAGE_SETTINGS -> SettingsTab()
+                                PAGE_PROFILE -> {
+                                    ProfileScreen(
+                                        userId = ApiClient.user?.id,
+                                        onBack = {},
+                                        onChat = { _ -> },
+                                        modifier = Modifier
+                                            .fillMaxSize()
+                                            .mainPagerBottomInset(),
+                                        onOpenSettings = {
+                                            scope.launch {
+                                                pagerState.animateScrollToPage(PAGE_SETTINGS)
+                                            }
+                                        },
+                                    )
                                 }
+                                else -> Unit
                             }
                         }
                     }
                 }
+            }
 
-                if (useBottomBar) {
-                    Column(
-                        modifier = Modifier
-                            .align(Alignment.BottomCenter)
-                            .fillMaxWidth()
-                            .zIndex(1f)
-                            .imePadding()
-                            .onSizeChanged { size ->
-                                val measured = with(density) { size.height.toDp() }
-                                if (measured != bottomChromeHeightDp) {
-                                    bottomChromeHeightDp = measured
-                                }
-                            }
-                            .background(MaterialTheme.colorScheme.surfaceContainer)
-                            .hazeEffect(state = navBarHazeState) {
-                                blurEffect {
-                                    style = navBarHazeStyle
-                                }
-                            },
-                    ) {
-                        NavigationBar(
-                            modifier = Modifier.fillMaxWidth(),
-                            containerColor = Color.Transparent,
-                            tonalElevation = 0.dp,
-                            windowInsets = WindowInsets.navigationBars.only(WindowInsetsSides.Bottom),
-                        ) {
-                            NavigationBarItem(
-                                selected = selectedPage == PAGE_CHATS,
-                                onClick = {
-                                    scope.launch { pagerState.animateScrollToPage(PAGE_CHATS) }
-                                },
-                                label = { Text(chatsLabel) },
-                                icon = {
-                                    Icon(
-                                        Icons.AutoMirrored.Filled.Chat,
-                                        contentDescription = null,
-                                    )
-                                },
-                            )
-                            NavigationBarItem(
-                                selected = selectedPage == PAGE_CONTACTS,
-                                onClick = {
-                                    scope.launch { pagerState.animateScrollToPage(PAGE_CONTACTS) }
-                                },
-                                label = { Text(contactsLabel) },
-                                icon = {
-                                    Icon(Icons.Filled.Contacts, contentDescription = null)
-                                },
-                            )
-                            NavigationBarItem(
-                                selected = selectedPage == PAGE_SETTINGS,
-                                onClick = {
-                                    scope.launch { pagerState.animateScrollToPage(PAGE_SETTINGS) }
-                                },
-                                label = { Text(settingsLabel) },
-                                icon = {
-                                    Icon(Icons.Filled.Settings, contentDescription = null)
-                                },
-                            )
-                            NavigationBarItem(
-                                selected = selectedPage == PAGE_PROFILE,
-                                onClick = {
-                                    scope.launch { pagerState.animateScrollToPage(PAGE_PROFILE) }
-                                },
-                                label = { Text(profileLabel) },
-                                icon = {
-                                    Icon(Icons.Filled.Person, contentDescription = null)
-                                },
-                            )
+            Column(
+                modifier = Modifier
+                    .align(Alignment.BottomCenter)
+                    .fillMaxWidth()
+                    .zIndex(1f)
+                    .imePadding()
+                    .onSizeChanged { size ->
+                        val measured = with(density) { size.height.toDp() }
+                        if (measured != bottomChromeHeightDp) {
+                            bottomChromeHeightDp = measured
                         }
                     }
+                    .background(MaterialTheme.colorScheme.surfaceContainer)
+                    .hazeEffect(state = navBarHazeState) {
+                        blurEffect {
+                            style = navBarHazeStyle
+                        }
+                    },
+            ) {
+                NavigationBar(
+                    modifier = Modifier.fillMaxWidth(),
+                    containerColor = Color.Transparent,
+                    tonalElevation = 0.dp,
+                    windowInsets = WindowInsets.navigationBars.only(WindowInsetsSides.Bottom),
+                ) {
+                    NavigationBarItem(
+                        selected = navSelectedPage == PAGE_CHATS,
+                        onClick = { selectMainPage(PAGE_CHATS) },
+                        label = { Text(chatsLabel) },
+                        icon = {
+                            Icon(
+                                Icons.AutoMirrored.Filled.Chat,
+                                contentDescription = null,
+                            )
+                        },
+                    )
+                    NavigationBarItem(
+                        selected = navSelectedPage == PAGE_CONTACTS,
+                        onClick = { selectMainPage(PAGE_CONTACTS) },
+                        label = { Text(contactsLabel) },
+                        icon = {
+                            Icon(Icons.Filled.Contacts, contentDescription = null)
+                        },
+                    )
+                    NavigationBarItem(
+                        selected = navSelectedPage == PAGE_SETTINGS,
+                        onClick = { selectMainPage(PAGE_SETTINGS) },
+                        label = { Text(settingsLabel) },
+                        icon = {
+                            Icon(Icons.Filled.Settings, contentDescription = null)
+                        },
+                    )
+                    NavigationBarItem(
+                        selected = navSelectedPage == PAGE_PROFILE,
+                        onClick = { selectMainPage(PAGE_PROFILE) },
+                        label = { Text(profileLabel) },
+                        icon = {
+                            Icon(Icons.Filled.Person, contentDescription = null)
+                        },
+                    )
                 }
             }
         }

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/chats/ChatListShared.kt

@@ -14,7 +14,9 @@ import androidx.compose.animation.scaleOut
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.background
 import androidx.compose.foundation.combinedClickable
+import androidx.compose.foundation.gestures.awaitEachGesture
 import androidx.compose.foundation.gestures.detectTapGestures
+import androidx.compose.foundation.gestures.waitForUpOrCancellation
 import androidx.compose.foundation.interaction.MutableInteractionSource
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.PaddingValues
@@ -60,6 +62,11 @@ import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.TransformOrigin
 import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.input.pointer.PointerEvent
+import androidx.compose.ui.input.pointer.PointerEventTimeoutCancellationException
+import androidx.compose.ui.input.pointer.PointerType
+import androidx.compose.ui.input.pointer.changedToDown
+import androidx.compose.ui.input.pointer.isSecondaryPressed
 import androidx.compose.ui.input.pointer.pointerInput
 import androidx.compose.ui.layout.onGloballyPositioned
 import androidx.compose.ui.layout.positionInRoot
@@ -67,6 +74,8 @@ import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.IntSize
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.util.fastAll
+import kotlinx.coroutines.withTimeout
 import ru.fromchat.ui.components.SearchBar
 import ru.fromchat.ui.components.SearchBarSharedElement
 import com.pr0gramm3r101.components.Category
@@ -126,6 +135,52 @@ private val ChatListCategoryMargin = PaddingValues(
     bottom = 12.dp,
 )
 
+/**
+ * Opens on primary click. Selection mode: touch/stylus long-press, or mouse secondary click.
+ * Mouse primary long-press does not enter selection.
+ */
+@OptIn(ExperimentalFoundationApi::class)
+private fun Modifier.chatRowOpenAndSelectGestures(
+    selectionEnabled: Boolean,
+    interactionSource: MutableInteractionSource,
+    onOpen: () -> Unit,
+    onEnterSelection: () -> Unit,
+): Modifier =
+    combinedClickable(
+        interactionSource = interactionSource,
+        indication = ripple(),
+        onClick = onOpen,
+    ).pointerInput(selectionEnabled) {
+        if (!selectionEnabled) return@pointerInput
+        awaitEachGesture {
+            var downEvent: PointerEvent
+            do {
+                downEvent = awaitPointerEvent()
+            } while (!downEvent.changes.fastAll { it.changedToDown() })
+            val down = downEvent.changes.firstOrNull() ?: return@awaitEachGesture
+            when (down.type) {
+                PointerType.Mouse -> {
+                    if (!downEvent.buttons.isSecondaryPressed || down.isConsumed) {
+                        return@awaitEachGesture
+                    }
+                    downEvent.changes.forEach { it.consume() }
+                    onEnterSelection()
+                }
+                PointerType.Touch, PointerType.Stylus -> {
+                    try {
+                        withTimeout(viewConfiguration.longPressTimeoutMillis) {
+                            waitForUpOrCancellation()
+                        }
+                    } catch (_: PointerEventTimeoutCancellationException) {
+                        onEnterSelection()
+                        waitForUpOrCancellation()
+                    }
+                }
+                else -> Unit
+            }
+        }
+    }
+
 @Composable
 internal fun ChatListHeadlineWithBadge(
     title: String,
@@ -721,15 +776,11 @@ internal fun PublicChatRow(
             .alpha(if (isHiddenForOverlay) 0f else 1f)
             .fillMaxWidth()
             .clip(clipShape)
-            .combinedClickable(
+            .chatRowOpenAndSelectGestures(
+                selectionEnabled = listMode == ChatsListMode.Normal,
                 interactionSource = rowInteractionSource,
-                indication = ripple(),
-                onClick = onOpenPublic,
-                onLongClick = if (listMode == ChatsListMode.Normal) {
-                    { onBodyLongPress() }
-                } else {
-                    null
-                },
+                onOpen = onOpenPublic,
+                onEnterSelection = onBodyLongPress,
             )
             .onGloballyPositioned { coords ->
                 rowRootOffset = coords.positionInRoot()
@@ -871,15 +922,11 @@ internal fun DmConversationRow(
             .alpha(if (isHiddenForOverlay) 0f else 1f)
             .fillMaxWidth()
             .clip(clipShape)
-            .combinedClickable(
+            .chatRowOpenAndSelectGestures(
+                selectionEnabled = listMode == ChatsListMode.Normal,
                 interactionSource = rowInteractionSource,
-                indication = ripple(),
-                onClick = onOpenConversation,
-                onLongClick = if (listMode == ChatsListMode.Normal) {
-                    { onBodyLongPress() }
-                } else {
-                    null
-                },
+                onOpen = onOpenConversation,
+                onEnterSelection = onBodyLongPress,
             )
             .onGloballyPositioned { coords ->
                 rowRootOffset = coords.positionInRoot()

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/chats/ChatsTab.kt

@@ -53,7 +53,6 @@ import androidx.compose.foundation.layout.asPaddingValues
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.statusBars
 import androidx.compose.foundation.layout.union
-import androidx.compose.material3.TopAppBar
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.derivedStateOf
@@ -141,7 +140,8 @@ import ru.fromchat.status_updating
 import ru.fromchat.account_suspended
 import ru.fromchat.ui.LocalNavController
 import ru.fromchat.ui.main.LocalMainChromeInsets
-import ru.fromchat.ui.chat.panels.dm.DmNav
+import ru.fromchat.ui.chat.panels.dm.navigateToDmChat
+import ru.fromchat.ui.chat.panels.publicchat.navigateToPublicChat
 import ru.fromchat.ui.components.BackHandler
 import ru.fromchat.ui.components.BrandTitle
 import ru.fromchat.ui.components.ConnectingEllipsis
@@ -337,7 +337,9 @@ private fun rememberSearchBarCollapseSnap(
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 private fun chatsTopAppBarColors(blurReveal: Float) = TopAppBarDefaults.topAppBarColors(
-    containerColor = MaterialTheme.colorScheme.surface.copy(alpha = 1f - blurReveal.coerceIn(0f, 1f)),
+    // Match AppPanel (`surfaceContainerLowest`) when unscrolled so the bar is not a separate stripe.
+    containerColor = MaterialTheme.colorScheme.surfaceContainerLowest
+        .copy(alpha = 1f - blurReveal.coerceIn(0f, 1f)),
     scrolledContainerColor = Color.Transparent,
 )
 
@@ -375,7 +377,12 @@ private fun ChatsNormalTopBar(
 ) {
     TopAppBar(
         modifier = modifier,
-        windowInsets = WindowInsets.extraStatusBars,
+        // Shell already applies/consumes status insets in list–detail; avoid double top padding.
+        windowInsets = if (LocalMainChromeInsets.current.top > 0.dp) {
+            WindowInsets.extraStatusBars
+        } else {
+            WindowInsets(0, 0, 0, 0)
+        },
         colors = chatsTopAppBarColors(blurReveal),
         title = {
             Row(
@@ -384,7 +391,7 @@ private fun ChatsNormalTopBar(
                 horizontalArrangement = Arrangement.Start,
             ) {
                 AsyncImage(
-                    model = Res.getUri("drawable/logo_square.svg"),
+                    model = Res.getUri("drawable/logo_square.png"),
                     contentDescription = null,
                     contentScale = ContentScale.Fit,
                     modifier = Modifier
@@ -469,7 +476,11 @@ private fun ChatsSelectionTopBar(
 
     TopAppBar(
         modifier = modifier,
-        windowInsets = WindowInsets.extraStatusBars,
+        windowInsets = if (LocalMainChromeInsets.current.top > 0.dp) {
+            WindowInsets.extraStatusBars
+        } else {
+            WindowInsets(0, 0, 0, 0)
+        },
         colors = chatsTopAppBarColors(blurReveal),
         navigationIcon = {
             IconButton(onClick = onClose) {
@@ -841,6 +852,7 @@ fun ChatsTab(
         PredictiveBackHandler(
             enabled = selectionMode,
             onProgress = { backProgress ->
+                if (!selectionMode) return@PredictiveBackHandler
                 scope.launch {
                     selectionTransitionProgress.snapTo((1f - backProgress).coerceIn(0f, 1f))
                 }
@@ -950,7 +962,7 @@ fun ChatsTab(
                             when {
                                 selectionMode && publicChatSelected -> publicChatSelected = false
                                 selectionMode -> publicChatSelected = true
-                                else -> navController.navigate("chats/publicChat")
+                                else -> navController.navigateToPublicChat()
                             }
                         },
                         onOpenConversation = { userId ->
@@ -961,7 +973,7 @@ fun ChatsTab(
 
                                 selectionMode -> selectedOtherUserIds += userId
 
-                                userId != 0 -> navController.navigate(DmNav.chatRoute(userId))
+                                userId != 0 -> navController.navigateToDmChat(userId)
                             }
                         },
                         onAvatarContextMenuPressStart = { lazyIndex, target, userId, rowOffset, rowSize, position, groupCount ->
@@ -1084,9 +1096,9 @@ fun ChatsTab(
         }
         chatContextMenuOverlay.onMessage = {
             when (contextMenuState.target) {
-                ChatContextMenuTarget.Public -> navController.navigate("chats/publicChat")
+                ChatContextMenuTarget.Public -> navController.navigateToPublicChat()
                 ChatContextMenuTarget.Dm -> {
-                    contextMenuState.otherUserId?.let { navController.navigate(DmNav.chatRoute(it)) }
+                    contextMenuState.otherUserId?.let { navController.navigateToDmChat(it) }
                 }
             }
         }

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/settings/AboutScreen.kt

@@ -9,14 +9,11 @@ import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.outlined.Description
 import androidx.compose.material.icons.outlined.Shield
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.MediumTopAppBar
 import androidx.compose.material3.Scaffold
 import ru.fromchat.ui.components.Text
 import androidx.compose.material3.TopAppBarDefaults
@@ -47,7 +44,6 @@ import ru.fromchat.about_link_terms
 import ru.fromchat.about_link_website
 import ru.fromchat.about_version
 import ru.fromchat.app_desc
-import ru.fromchat.back
 import ru.fromchat.legal.DocumentType
 import ru.fromchat.ui.LocalNavController
 import ru.fromchat.ui.components.BrandTitle
@@ -59,30 +55,28 @@ private const val URL_WEBSITE = "https://fromchat.ru"
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun AboutScreen() {
+    val useCollapsing = settingsDetailUseCollapsingTopBar()
     val scrollBehavior = TopAppBarDefaults.exitUntilCollapsedScrollBehavior(rememberTopAppBarState())
     val navController = LocalNavController.current
     val uriHandler = LocalUriHandler.current
 
     Scaffold(
-        modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+        modifier = if (useCollapsing) {
+            Modifier.nestedScroll(scrollBehavior.nestedScrollConnection)
+        } else {
+            Modifier
+        },
         topBar = {
-            MediumTopAppBar(
+            SettingsDetailTopBar(
                 title = {
                     Text(
                         stringResource(Res.string.about),
                         maxLines = 1,
-                        overflow = TextOverflow.Ellipsis
+                        overflow = TextOverflow.Ellipsis,
                     )
                 },
-                navigationIcon = {
-                    IconButton(onClick = { navController.navigateUp() }) {
-                        Icon(
-                            imageVector = Icons.AutoMirrored.Filled.ArrowBack,
-                            contentDescription = stringResource(Res.string.back)
-                        )
-                    }
-                },
-                scrollBehavior = scrollBehavior
+                onBack = { navController.navigateUp() },
+                scrollBehavior = scrollBehavior,
             )
         },
     ) { innerPadding ->
@@ -100,7 +94,7 @@ fun AboutScreen() {
             ) {
                 Box(Modifier.padding(bottom = 12.dp)) {
                     AsyncImage(
-                        model = Res.getUri("drawable/logo_square.svg"),
+                        model = Res.getUri("drawable/logo_square.png"),
                         contentDescription = null,
                         contentScale = ContentScale.Fit,
                         modifier = Modifier

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/settings/AppearanceScreen.kt

@@ -11,18 +11,16 @@ import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.Brush
 import androidx.compose.material.icons.filled.DarkMode
+import androidx.compose.material.icons.filled.KeyboardReturn
 import androidx.compose.material.icons.filled.LightMode
 import androidx.compose.material.icons.filled.Settings
 import androidx.compose.material.icons.filled.Wallpaper
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.FilterChip
 import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.MediumTopAppBar
 import androidx.compose.material3.Scaffold
 import ru.fromchat.ui.components.Text
 import androidx.compose.material3.TopAppBarDefaults
@@ -44,9 +42,10 @@ import com.pr0gramm3r101.utils.materialYouAvailable
 import org.jetbrains.compose.resources.stringResource
 import ru.fromchat.Res
 import ru.fromchat.as_system
-import ru.fromchat.back
 import ru.fromchat.config.Settings
 import ru.fromchat.dark
+import ru.fromchat.enter_to_send
+import ru.fromchat.enter_to_send_d
 import ru.fromchat.light
 import ru.fromchat.materialYou
 import ru.fromchat.materialYou_d
@@ -59,24 +58,26 @@ import ru.fromchat.ui.theme
 @OptIn(ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
 @Composable
 fun AppearanceScreen(onBack: () -> Unit) {
+    val useCollapsing = settingsDetailUseCollapsingTopBar()
     val scrollBehavior = TopAppBarDefaults.exitUntilCollapsedScrollBehavior(rememberTopAppBarState())
 
     var materialYouSwitch by remember {
         mutableStateOf(Settings.materialYou && materialYouAvailable)
     }
+    var enterToSendSwitch by remember { mutableStateOf(Settings.enterToSend) }
     var themeChipIndex by remember { mutableIntStateOf(Settings.theme.ordinal) }
 
     Scaffold(
-        modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+        modifier = if (useCollapsing) {
+            Modifier.nestedScroll(scrollBehavior.nestedScrollConnection)
+        } else {
+            Modifier
+        },
         topBar = {
-            MediumTopAppBar(
+            SettingsDetailTopBar(
                 title = { Text(stringResource(Res.string.settings_category_appearance)) },
-                navigationIcon = {
-                    IconButton(onClick = onBack) {
-                        Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(Res.string.back))
-                    }
-                },
-                scrollBehavior = scrollBehavior
+                onBack = onBack,
+                scrollBehavior = scrollBehavior,
             )
         }
     ) { innerPadding ->
@@ -105,6 +106,19 @@ fun AppearanceScreen(onBack: () -> Unit) {
                         Icon(Icons.Filled.Wallpaper, null)
                     }
                 )
+                SwitchListItem(
+                    headline = stringResource(Res.string.enter_to_send),
+                    supportingText = stringResource(Res.string.enter_to_send_d),
+                    checked = enterToSendSwitch,
+                    onCheckedChange = {
+                        enterToSendSwitch = it
+                        Settings.enterToSend = it
+                    },
+                    divider = true,
+                    leadingContent = {
+                        Icon(Icons.Filled.KeyboardReturn, null)
+                    }
+                )
                 ListItem(
                     headline = stringResource(Res.string.theme),
                     leadingContent = { Icon(Icons.Filled.Brush, null) },
@@ -145,4 +159,4 @@ fun AppearanceScreen(onBack: () -> Unit) {
             }
         }
     }
-}
+}

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/settings/DevicesScreen.kt

@@ -434,8 +434,10 @@ fun DevicesScreen(onBack: () -> Unit) {
             TopAppBar(
                 title = {},
                 navigationIcon = {
-                    IconButton(onClick = onBack) {
-                        Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(Res.string.back))
+                    if (settingsDetailShowBackButton()) {
+                        IconButton(onClick = onBack) {
+                            Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(Res.string.back))
+                        }
                     }
                 },
                 colors = TopAppBarDefaults.topAppBarColors(

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/settings/LogsScreen.kt

@@ -376,6 +376,9 @@ fun LogsScreen() {
     }
 
     fun enterEntrySelection(entryId: Long) {
+        if (searchMode) {
+            exitSearchMode()
+        }
         haptic(HapticFeedbackEvent.SelectionModeEntered)
         scope.launch { selectionTransitionProgress.snapTo(0f) }
         listMode = LogsListMode.Selecting
@@ -467,6 +470,12 @@ fun LogsScreen() {
 
     LaunchedEffect(Unit) {
         AppLogStore.ensureLoaded()
+        listMode = LogsListMode.Normal
+        selectedEntryIds = emptySet()
+        searchMode = false
+        searchQuery = ""
+        selectionTransitionProgress.snapTo(0f)
+        searchTransitionProgress.snapTo(0f)
     }
 
     LaunchedEffect(navController.currentBackStackEntry) {
@@ -767,14 +776,16 @@ fun LogsScreen() {
                         }
                         .background(MaterialTheme.colorScheme.surfaceContainer),
                     navigationIcon = {
-                        IconButton(
-                            onClick = { navController.navigateUp() },
-                            enabled = selectionProgress < 1f && searchProgress < 1f,
-                        ) {
-                            Icon(
-                                imageVector = Icons.AutoMirrored.Filled.ArrowBack,
-                                contentDescription = stringResource(Res.string.back),
-                            )
+                        if (settingsDetailShowBackButton()) {
+                            IconButton(
+                                onClick = { navController.navigateUp() },
+                                enabled = selectionProgress < 1f && searchProgress < 1f,
+                            ) {
+                                Icon(
+                                    imageVector = Icons.AutoMirrored.Filled.ArrowBack,
+                                    contentDescription = stringResource(Res.string.back),
+                                )
+                            }
                         }
                     },
                     title = {
@@ -871,7 +882,7 @@ fun LogsScreen() {
                     },
                     scrollBehavior = scrollBehavior,
                 )
-                if (searchMode || searchProgress > 0f) {
+                if (searchMode) {
                     TopAppBar(
                         modifier = Modifier.graphicsLayer { alpha = searchProgress },
                         colors = logsTransparentTopAppBarColors(),
@@ -931,7 +942,7 @@ fun LogsScreen() {
                         },
                     )
                 }
-                if (selectionMode || selectionProgress > 0f) {
+                if (selectionMode) {
                     TopAppBar(
                         modifier = Modifier.graphicsLayer { alpha = selectionProgress },
                         navigationIcon = {

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/settings/NotificationsScreen.kt

@@ -6,13 +6,10 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.filled.Notifications
 import androidx.compose.material.icons.filled.Settings
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
-import androidx.compose.material3.MediumTopAppBar
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.TopAppBarDefaults
@@ -36,7 +33,6 @@ import ru.fromchat.Res
 import ru.fromchat.api.ensureFcmTokenRegistered
 import ru.fromchat.api.isFcmPushRegisteredLocally
 import ru.fromchat.api.unregisterFcmTokenFromServer
-import ru.fromchat.back
 import ru.fromchat.error_unexpected
 import ru.fromchat.settings_notification_settings
 import ru.fromchat.settings_notification_settings_d
@@ -51,6 +47,7 @@ import ru.fromchat.ui.components.Text
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun NotificationsScreen(onBack: () -> Unit) {
+    val useCollapsing = settingsDetailUseCollapsingTopBar()
     val scrollBehavior = TopAppBarDefaults.exitUntilCollapsedScrollBehavior(rememberTopAppBarState())
     val coroutineScope = rememberCoroutineScope()
     val snackbarHostState = remember { SnackbarHostState() }
@@ -63,16 +60,16 @@ fun NotificationsScreen(onBack: () -> Unit) {
 
     Scaffold(
         snackbarHost = { FromChatSnackbarHost(hostState = snackbarHostState) },
-        modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+        modifier = if (useCollapsing) {
+            Modifier.nestedScroll(scrollBehavior.nestedScrollConnection)
+        } else {
+            Modifier
+        },
         topBar = {
-            MediumTopAppBar(
+            SettingsDetailTopBar(
                 title = { Text(stringResource(Res.string.settings_notifications_title)) },
-                navigationIcon = {
-                    IconButton(onClick = onBack) {
-                        Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(Res.string.back))
-                    }
-                },
-                scrollBehavior = scrollBehavior
+                onBack = onBack,
+                scrollBehavior = scrollBehavior,
             )
         }
     ) { innerPadding ->

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/settings/SettingsDetailTopBar.kt

@@ -0,0 +1,67 @@
+package ru.fromchat.ui.main.settings
+
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MediumTopAppBar
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.TopAppBarScrollBehavior
+import androidx.compose.runtime.Composable
+import com.pr0gramm3r101.utils.WindowWidthSizeClass
+import com.pr0gramm3r101.utils.currentWindowAdaptiveInfo
+import com.pr0gramm3r101.utils.widthSizeClass
+import org.jetbrains.compose.resources.stringResource
+import ru.fromchat.Res
+import ru.fromchat.back
+import ru.fromchat.ui.LocalNavController
+
+/**
+ * Back is shown on compact (full-screen stack), and on large screens only when the
+ * previous destination is not the list–detail shell (`chat`) — i.e. when nested
+ * deeper than a settings detail opened as the right pane.
+ */
+@Composable
+fun settingsDetailShowBackButton(): Boolean {
+    if (currentWindowAdaptiveInfo().widthSizeClass == WindowWidthSizeClass.COMPACT) {
+        return true
+    }
+    val previousRoute = LocalNavController.current.previousBackStackEntry?.destination?.route
+    return previousRoute != null && previousRoute != "chat"
+}
+
+@Composable
+fun settingsDetailUseCollapsingTopBar(): Boolean =
+    currentWindowAdaptiveInfo().widthSizeClass == WindowWidthSizeClass.COMPACT
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun SettingsDetailTopBar(
+    title: @Composable () -> Unit,
+    onBack: () -> Unit,
+    scrollBehavior: TopAppBarScrollBehavior? = null,
+) {
+    val navigationIcon: @Composable () -> Unit = {
+        if (settingsDetailShowBackButton()) {
+            IconButton(onClick = onBack) {
+                Icon(
+                    imageVector = Icons.AutoMirrored.Filled.ArrowBack,
+                    contentDescription = stringResource(Res.string.back),
+                )
+            }
+        }
+    }
+    if (settingsDetailUseCollapsingTopBar()) {
+        MediumTopAppBar(
+            title = title,
+            navigationIcon = navigationIcon,
+            scrollBehavior = scrollBehavior,
+        )
+    } else {
+        TopAppBar(
+            title = title,
+            navigationIcon = navigationIcon,
+        )
+    }
+}

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/settings/SettingsTab.kt

@@ -2,6 +2,7 @@ package ru.fromchat.ui.main.settings
 
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ExperimentalLayoutApi
+import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
 import androidx.compose.material.icons.Icons
@@ -9,6 +10,7 @@ import androidx.compose.material.icons.filled.AccountCircle
 import androidx.compose.material.icons.filled.Devices
 import androidx.compose.material.icons.filled.Info
 import androidx.compose.material.icons.filled.Notifications
+import androidx.compose.material.icons.filled.Person
 import androidx.compose.material.icons.outlined.BugReport
 import androidx.compose.material.icons.filled.Palette
 import androidx.compose.material.icons.filled.Storage
@@ -21,17 +23,23 @@ import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.material3.rememberTopAppBarState
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.input.nestedscroll.nestedScroll
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import com.pr0gramm3r101.components.Category
 import com.pr0gramm3r101.components.ListItem
+import com.pr0gramm3r101.utils.WindowWidthSizeClass
+import com.pr0gramm3r101.utils.currentWindowAdaptiveInfo
 import com.pr0gramm3r101.utils.verticalScroll
+import com.pr0gramm3r101.utils.widthSizeClass
 import org.jetbrains.compose.resources.stringResource
 import ru.fromchat.Res
 import ru.fromchat.about
+import ru.fromchat.api.ApiClient
 import ru.fromchat.change_server
 import ru.fromchat.change_server_d
+import ru.fromchat.profile
 import ru.fromchat.settings
 import ru.fromchat.settings_category_account
 import ru.fromchat.settings_category_account_d
@@ -44,8 +52,12 @@ import ru.fromchat.settings_category_notifications_d
 import ru.fromchat.logs_title
 import ru.fromchat.settings_hub_about_sub
 import ru.fromchat.settings_hub_logs_sub
+import ru.fromchat.settings_hub_profile_sub
 import ru.fromchat.ui.LocalNavController
+import ru.fromchat.ui.extraStatusBars
+import ru.fromchat.ui.main.LocalMainChromeInsets
 import ru.fromchat.ui.main.mainPagerBottomInset
+import ru.fromchat.ui.main.navigateReplacingMainDetail
 
 val SettingsStepHorizontalPadding = 24.dp
 
@@ -54,14 +66,26 @@ val SettingsStepHorizontalPadding = 24.dp
 fun SettingsTab() {
     val scrollBehavior = TopAppBarDefaults.exitUntilCollapsedScrollBehavior(rememberTopAppBarState())
     val navController = LocalNavController.current
+    val isTwoPane = currentWindowAdaptiveInfo().widthSizeClass != WindowWidthSizeClass.COMPACT
 
     Scaffold(
         modifier = Modifier.fillMaxSize().nestedScroll(scrollBehavior.nestedScrollConnection),
+        containerColor = Color.Transparent,
+        contentWindowInsets = WindowInsets(0, 0, 0, 0),
         topBar = {
             MediumTopAppBar(
+                windowInsets = if (LocalMainChromeInsets.current.top > 0.dp) {
+                    WindowInsets.extraStatusBars
+                } else {
+                    WindowInsets(0, 0, 0, 0)
+                },
                 title = {
                     Text(stringResource(Res.string.settings), maxLines = 1, overflow = TextOverflow.Ellipsis)
                 },
+                colors = TopAppBarDefaults.topAppBarColors(
+                    containerColor = Color.Transparent,
+                    scrolledContainerColor = Color.Transparent,
+                ),
                 scrollBehavior = scrollBehavior
             )
         }
@@ -73,11 +97,25 @@ fun SettingsTab() {
                 .mainPagerBottomInset()
                 .padding(innerPadding)
         ) {
+            if (isTwoPane) {
+                Category(Modifier.padding(top = 16.dp)) {
+                    ListItem(
+                        headline = stringResource(Res.string.profile),
+                        supportingText = stringResource(Res.string.settings_hub_profile_sub),
+                        onClick = {
+                            val userId = ApiClient.user?.id?.takeIf { it > 0 } ?: return@ListItem
+                            navController.navigateReplacingMainDetail("profile/$userId")
+                        },
+                        leadingContent = { Icon(Icons.Filled.Person, null) },
+                    )
+                }
+            }
+
             Category(Modifier.padding(top = 16.dp)) {
                 ListItem(
                     headline = stringResource(Res.string.settings_category_account),
                     supportingText = stringResource(Res.string.settings_category_account_d),
-                    onClick = { navController.navigate(SettingsRoutes.Account) },
+                    onClick = { navController.navigateReplacingMainDetail(SettingsRoutes.Account) },
                     leadingContent = { Icon(Icons.Filled.AccountCircle, null) },
                     divider = true
                 )
@@ -85,7 +123,7 @@ fun SettingsTab() {
                 ListItem(
                     headline = stringResource(Res.string.settings_category_devices),
                     supportingText = stringResource(Res.string.settings_category_devices_d),
-                    onClick = { navController.navigate(SettingsRoutes.Devices) },
+                    onClick = { navController.navigateReplacingMainDetail(SettingsRoutes.Devices) },
                     leadingContent = { Icon(Icons.Filled.Devices, null) },
                     divider = true
                 )
@@ -93,7 +131,7 @@ fun SettingsTab() {
                 ListItem(
                     headline = stringResource(Res.string.settings_category_appearance),
                     supportingText = stringResource(Res.string.settings_category_appearance_d),
-                    onClick = { navController.navigate(SettingsRoutes.Appearance) },
+                    onClick = { navController.navigateReplacingMainDetail(SettingsRoutes.Appearance) },
                     leadingContent = { Icon(Icons.Filled.Palette, null) },
                     divider = true
                 )
@@ -101,7 +139,7 @@ fun SettingsTab() {
                 ListItem(
                     headline = stringResource(Res.string.settings_category_notifications),
                     supportingText = stringResource(Res.string.settings_category_notifications_d),
-                    onClick = { navController.navigate(SettingsRoutes.Notifications) },
+                    onClick = { navController.navigateReplacingMainDetail(SettingsRoutes.Notifications) },
                     leadingContent = { Icon(Icons.Filled.Notifications, null) },
                     divider = true
                 )
@@ -109,7 +147,7 @@ fun SettingsTab() {
                 ListItem(
                     headline = stringResource(Res.string.change_server),
                     supportingText = stringResource(Res.string.change_server_d),
-                    onClick = { navController.navigate(SettingsRoutes.ServerConfig) },
+                    onClick = { navController.navigateReplacingMainDetail(SettingsRoutes.ServerConfig) },
                     leadingContent = { Icon(Icons.Filled.Storage, null) },
                     divider = true
                 )
@@ -117,7 +155,7 @@ fun SettingsTab() {
                 ListItem(
                     headline = stringResource(Res.string.about),
                     supportingText = stringResource(Res.string.settings_hub_about_sub),
-                    onClick = { navController.navigate(SettingsRoutes.About) },
+                    onClick = { navController.navigateReplacingMainDetail(SettingsRoutes.About) },
                     leadingContent = { Icon(Icons.Filled.Info, null) },
                     divider = true
                 )
@@ -125,10 +163,10 @@ fun SettingsTab() {
                 ListItem(
                     headline = stringResource(Res.string.logs_title),
                     supportingText = stringResource(Res.string.settings_hub_logs_sub),
-                    onClick = { navController.navigate(SettingsRoutes.Logs) },
+                    onClick = { navController.navigateReplacingMainDetail(SettingsRoutes.Logs) },
                     leadingContent = { Icon(Icons.Outlined.BugReport, null) }
                 )
             }
         }
     }
-}
+}

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/settings/account/AccountScreen.kt

@@ -9,7 +9,6 @@ import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.automirrored.filled.KeyboardArrowRight
 import androidx.compose.material.icons.automirrored.filled.Logout
 import androidx.compose.material.icons.filled.AccountCircle
@@ -17,9 +16,7 @@ import androidx.compose.material.icons.filled.Key
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.MediumTopAppBar
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBarDefaults
@@ -41,7 +38,6 @@ import org.jetbrains.compose.resources.stringResource
 import org.jetbrains.compose.resources.vectorResource
 import ru.fromchat.Res
 import ru.fromchat.api.ApiClient
-import ru.fromchat.back
 import ru.fromchat.cancel
 import ru.fromchat.ic_yandex
 import ru.fromchat.logout
@@ -55,6 +51,8 @@ import ru.fromchat.settings_account_title
 import ru.fromchat.settings_change_password
 import ru.fromchat.settings_security_change_password_sub
 import ru.fromchat.ui.components.Text
+import ru.fromchat.ui.main.settings.SettingsDetailTopBar
+import ru.fromchat.ui.main.settings.settingsDetailUseCollapsingTopBar
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -65,6 +63,7 @@ fun AccountScreen(
     onChangeYandexId: () -> Unit,
     onDeleteAccount: () -> Unit,
 ) {
+    val useCollapsing = settingsDetailUseCollapsingTopBar()
     val scrollBehavior = TopAppBarDefaults.exitUntilCollapsedScrollBehavior(rememberTopAppBarState())
     val scope = rememberCoroutineScope()
     var showLogoutConfirm by remember { mutableStateOf(false) }
@@ -76,16 +75,16 @@ fun AccountScreen(
     }
 
     Scaffold(
-        modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+        modifier = if (useCollapsing) {
+            Modifier.nestedScroll(scrollBehavior.nestedScrollConnection)
+        } else {
+            Modifier
+        },
         topBar = {
-            MediumTopAppBar(
+            SettingsDetailTopBar(
                 title = { Text(stringResource(Res.string.settings_account_title)) },
-                navigationIcon = {
-                    IconButton(onClick = onBack) {
-                        Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(Res.string.back))
-                    }
-                },
-                scrollBehavior = scrollBehavior
+                onBack = onBack,
+                scrollBehavior = scrollBehavior,
             )
         }
     ) { innerPadding ->

app/shared/src/commonMain/kotlin/ru/fromchat/ui/main/settings/server/ServerConfigScreen.kt

@@ -119,6 +119,7 @@ import ru.fromchat.ui.components.SettingsPasswordOutlineFieldShape
 import ru.fromchat.ui.components.rememberLazyListFocusScrollState
 import ru.fromchat.ui.components.trackLazyListFocus
 import ru.fromchat.ui.main.settings.SettingsStepHorizontalPadding
+import ru.fromchat.ui.main.settings.settingsDetailShowBackButton
 
 private object ServerConfigLazyListIndices {
     const val SERVER_IP_FIELD = 2
@@ -334,11 +335,13 @@ fun ServerConfigScreen() {
                 TopAppBar(
                     title = {},
                     navigationIcon = {
-                        IconButton(onClick = navController::navigateUp) {
-                            Icon(
-                                Icons.AutoMirrored.Filled.ArrowBack,
-                                contentDescription = stringResource(Res.string.back)
-                            )
+                        if (settingsDetailShowBackButton()) {
+                            IconButton(onClick = navController::navigateUp) {
+                                Icon(
+                                    Icons.AutoMirrored.Filled.ArrowBack,
+                                    contentDescription = stringResource(Res.string.back)
+                                )
+                            }
                         }
                     },
                     colors = TopAppBarDefaults.topAppBarColors(

app/shared/src/commonMain/kotlin/ru/fromchat/ui/profile/ProfileScreen.kt

@@ -63,7 +63,6 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.layout.statusBars
 import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.relocation.BringIntoViewRequester
@@ -192,6 +191,7 @@ import ru.fromchat.ui.components.ScreenSurface
 import ru.fromchat.ui.components.ShimmerBox
 import ru.fromchat.ui.components.Text
 import ru.fromchat.ui.components.showReplacingSnackbar
+import ru.fromchat.ui.extraStatusBars
 import ru.fromchat.utils.RegistrationDateFormatStrings
 import ru.fromchat.utils.formatLastSeen
 import ru.fromchat.utils.formatProfileRegistrationDate
@@ -269,7 +269,7 @@ fun ProfileScreen(
     val navController = LocalNavController.current
     val scope = rememberCoroutineScope()
     val density = LocalDensity.current
-    val statusBarTopDp = with(density) { WindowInsets.statusBars.getTop(this).toDp() }
+    val statusBarTopDp = with(density) { WindowInsets.extraStatusBars.getTop(this).toDp() }
     val profileAvatarTop = statusBarTopDp + 24.dp
 
     val profileLoadFailed = stringResource(Res.string.profile_load_failed)
@@ -881,7 +881,7 @@ fun PublicChatProfileScreen(
     val scope = rememberCoroutineScope()
     val snackbarHostState = remember { SnackbarHostState() }
     val density = LocalDensity.current
-    val statusBarTopDp = with(density) { WindowInsets.statusBars.getTop(this).toDp() }
+    val statusBarTopDp = with(density) { WindowInsets.extraStatusBars.getTop(this).toDp() }
     val profileAvatarTop = statusBarTopDp + 24.dp
     val profileLoadFailed = stringResource(Res.string.profile_load_failed)
     val profileNotFound = stringResource(Res.string.profile_not_found)
@@ -2058,7 +2058,7 @@ private fun ProfileFloatingBackBar(
             onClick = onBack,
             modifier = Modifier
                 .align(Alignment.TopStart)
-                .windowInsetsPadding(WindowInsets.statusBars),
+                .windowInsetsPadding(WindowInsets.extraStatusBars),
             colors = IconButtonDefaults.iconButtonColors(
                 contentColor = MaterialTheme.colorScheme.onSurface,
             ),

app/shared/src/iosMain/kotlin/ru/fromchat/config/DefaultEnterToSend.ios.kt

@@ -0,0 +1,3 @@
+package ru.fromchat.config
+
+internal actual fun defaultEnterToSend(): Boolean = false

app/shared/src/iosMain/kotlin/ru/fromchat/ui/chat/ChatTextSelectionMenu.ios.kt

@@ -0,0 +1,8 @@
+package ru.fromchat.ui.chat
+
+import androidx.compose.runtime.Composable
+
+@Composable
+internal actual fun ProvideChatTextSelectionMenu(content: @Composable () -> Unit) {
+    content()
+}

app/shared/src/jvmMain/kotlin/ru/fromchat/config/DefaultEnterToSend.jvm.kt

@@ -0,0 +1,3 @@
+package ru.fromchat.config
+
+internal actual fun defaultEnterToSend(): Boolean = true

app/shared/src/jvmMain/kotlin/ru/fromchat/desktop/DesktopAboutContent.kt

@@ -0,0 +1,80 @@
+package ru.fromchat.desktop
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.navigation.NavType
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.rememberNavController
+import androidx.navigation.navArgument
+import ru.fromchat.legal.DocumentScreen
+import ru.fromchat.legal.DocumentType
+import ru.fromchat.ui.FromChatTheme
+import ru.fromchat.ui.LocalNavController
+import ru.fromchat.ui.components.ScreenSurface
+import ru.fromchat.ui.main.settings.AboutScreen
+
+/**
+ * Hosts [AboutScreen] (and linked legal docs) for a dedicated desktop About window.
+ * Back from the root About destination closes via [onClose].
+ */
+@Composable
+fun DesktopAboutContent(onClose: () -> Unit) {
+    FromChatTheme {
+        ScreenSurface {
+            val navController = rememberNavController()
+            var aboutOpened by remember { mutableStateOf(false) }
+
+            CompositionLocalProvider(LocalNavController provides navController) {
+                NavHost(
+                    navController = navController,
+                    startDestination = ABOUT_GATE_ROUTE,
+                ) {
+                    composable(ABOUT_GATE_ROUTE) {
+                        LaunchedEffect(Unit) {
+                            if (!aboutOpened) {
+                                aboutOpened = true
+                                navController.navigate(ABOUT_ROUTE)
+                            } else {
+                                onClose()
+                            }
+                        }
+                    }
+
+                    composable(ABOUT_ROUTE) {
+                        AboutScreen()
+                    }
+
+                    composable(
+                        route = DocumentType.ROUTE,
+                        arguments = listOf(
+                            navArgument(DocumentType.ARG_DOCUMENT_TYPE) { type = NavType.StringType },
+                        ),
+                    ) { entry ->
+                        val type = entry.savedStateHandle
+                            .get<String>(DocumentType.ARG_DOCUMENT_TYPE)
+                            ?.let(DocumentType::typeFromArg)
+                            ?: return@composable
+                        DocumentScreen(
+                            type = type,
+                            onBack = { navController.navigateUp() },
+                            onOpenLegalDocument = { linkedType ->
+                                navController.navigate(DocumentType.route(linkedType)) {
+                                    launchSingleTop = true
+                                }
+                            },
+                        )
+                    }
+                }
+            }
+        }
+    }
+}
+
+private const val ABOUT_GATE_ROUTE = "_about_gate"
+private const val ABOUT_ROUTE = "about"

app/shared/src/jvmMain/kotlin/ru/fromchat/ui/chat/ChatTextSelectionMenu.jvm.kt

@@ -0,0 +1,121 @@
+package ru.fromchat.ui.chat
+
+import androidx.compose.foundation.ContextMenuArea
+import androidx.compose.foundation.ContextMenuItem
+import androidx.compose.foundation.ContextMenuRepresentation
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.LocalContextMenuRepresentation
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.text.LocalTextContextMenu
+import androidx.compose.foundation.text.TextContextMenu
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.rounded.ContentCopy
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.SideEffect
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.IntOffset
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.window.Popup
+import androidx.compose.ui.window.PopupProperties
+import org.jetbrains.compose.resources.stringResource
+import ru.fromchat.Res
+import ru.fromchat.action_copy
+import androidx.compose.foundation.ContextMenuState as FoundationContextMenuState
+
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+internal actual fun ProvideChatTextSelectionMenu(content: @Composable () -> Unit) {
+    val labelCopy = stringResource(Res.string.action_copy)
+    CompositionLocalProvider(
+        LocalContextMenuRepresentation provides ChatStyleTextContextMenuRepresentation,
+        LocalTextContextMenu provides ChatStyleTextContextMenu(labelCopy),
+        content = content,
+    )
+}
+
+@OptIn(ExperimentalFoundationApi::class)
+private class ChatStyleTextContextMenu(
+    private val copyLabel: String,
+) : TextContextMenu {
+    @Composable
+    override fun Area(
+        textManager: TextContextMenu.TextManager,
+        state: FoundationContextMenuState,
+        content: @Composable () -> Unit,
+    ) {
+        ContextMenuArea(
+            items = {
+                listOfNotNull(
+                    textManager.copy?.takeIf { it.enabled }?.let { action ->
+                        ContextMenuItem(copyLabel) { action.execute() }
+                    },
+                )
+            },
+            state = state,
+            // Empty selection: let secondary click reach the message menu handler.
+            enabled = textManager.selectedText.isNotEmpty(),
+            content = content,
+        )
+    }
+}
+
+private object ChatStyleTextContextMenuRepresentation : ContextMenuRepresentation {
+    @Composable
+    override fun Representation(
+        state: FoundationContextMenuState,
+        items: () -> List<ContextMenuItem>,
+    ) {
+        val status = state.status as? FoundationContextMenuState.Status.Open ?: return
+        val menuItems = items()
+        if (menuItems.isEmpty()) {
+            SideEffect {
+                state.status = FoundationContextMenuState.Status.Closed
+            }
+            return
+        }
+
+        Popup(
+            alignment = Alignment.TopStart,
+            offset = IntOffset(
+                status.rect.left.toInt(),
+                status.rect.bottom.toInt(),
+            ),
+            onDismissRequest = {
+                state.status = FoundationContextMenuState.Status.Closed
+            },
+            properties = PopupProperties(
+                focusable = true,
+                dismissOnBackPress = true,
+                dismissOnClickOutside = true,
+                clippingEnabled = false,
+            ),
+        ) {
+            ChatStyleContextMenuFrame {
+                Column(
+                    modifier = Modifier
+                        .padding(horizontal = 8.dp, vertical = 8.dp)
+                        .verticalScroll(rememberScrollState()),
+                    verticalArrangement = Arrangement.spacedBy(2.dp),
+                ) {
+                    for (item in menuItems) {
+                        ChatStyleContextMenuItem(
+                            icon = Icons.Rounded.ContentCopy,
+                            text = item.label,
+                            enabled = item.enabled,
+                            onClick = {
+                                state.status = FoundationContextMenuState.Status.Closed
+                                item.onClick()
+                            },
+                        )
+                    }
+                }
+            }
+        }
+    }
+}