diff --git a/android/app/src/main/java/ru/daemonlord/messenger/ui/chat/ChatScreen.kt b/android/app/src/main/java/ru/daemonlord/messenger/ui/chat/ChatScreen.kt
index 2c5bfb4..049733c 100644
--- a/android/app/src/main/java/ru/daemonlord/messenger/ui/chat/ChatScreen.kt
+++ b/android/app/src/main/java/ru/daemonlord/messenger/ui/chat/ChatScreen.kt
@@ -1,6 +1,7 @@
 package ru.daemonlord.messenger.ui.chat
 
 import android.Manifest
+import android.app.Activity
 import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
@@ -67,6 +68,7 @@ import androidx.compose.material3.rememberModalBottomSheetState
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.SideEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.derivedStateOf
 import androidx.compose.animation.core.LinearEasing
@@ -81,7 +83,9 @@ import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.snapshotFlow
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.platform.LocalConfiguration
+import androidx.compose.ui.platform.LocalView
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.font.FontWeight
@@ -93,7 +97,10 @@ import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.graphics.Brush
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.compositeOver
+import androidx.compose.ui.graphics.luminance
 import androidx.compose.ui.graphics.StrokeCap
+import androidx.compose.ui.graphics.toArgb
 import androidx.compose.ui.viewinterop.AndroidView
 import androidx.compose.foundation.Canvas
 import androidx.compose.foundation.layout.WindowInsets
@@ -106,6 +113,7 @@ import androidx.compose.ui.layout.onSizeChanged
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.core.content.ContextCompat
+import androidx.core.view.WindowCompat
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.Forward
 import androidx.compose.material.icons.automirrored.filled.ArrowBack
@@ -125,10 +133,10 @@ import androidx.compose.material.icons.filled.RadioButtonUnchecked
 import androidx.compose.material.icons.filled.Search
 import androidx.compose.material.icons.filled.Notifications
 import androidx.compose.material.icons.filled.Pause
-import androidx.compose.material.icons.filled.Wallpaper
 import androidx.compose.material.icons.filled.Info
 import androidx.compose.material.icons.filled.Image
 import androidx.compose.material.icons.filled.Link
+import androidx.compose.material.icons.filled.Wallpaper
 import androidx.compose.material.icons.filled.PlayArrow
 import androidx.compose.material.icons.filled.Edit
 import androidx.compose.material.icons.filled.FormatBold
@@ -141,6 +149,7 @@ import androidx.compose.material.icons.filled.VisibilityOff
 import androidx.compose.material.icons.automirrored.filled.Reply
 import androidx.compose.material.icons.automirrored.filled.InsertDriveFile
 import coil.compose.AsyncImage
+import ru.daemonlord.messenger.R
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.Dispatchers
@@ -278,6 +287,9 @@ fun ChatRoute(
         onInlineSearchChanged = viewModel::onInlineSearchChanged,
         onJumpInlineSearch = viewModel::jumpInlineSearch,
         onVisibleIncomingMessageId = viewModel::onVisibleIncomingMessageId,
+        onToggleChatNotifications = viewModel::onToggleChatNotifications,
+        onClearHistory = viewModel::onClearHistory,
+        onDeleteChat = viewModel::onDeleteOrLeaveChat,
     )
 }
 
@@ -312,8 +324,12 @@ fun ChatScreen(
     onInlineSearchChanged: (String) -> Unit,
     onJumpInlineSearch: (Boolean) -> Unit,
     onVisibleIncomingMessageId: (Long?) -> Unit,
+    onToggleChatNotifications: () -> Unit,
+    onClearHistory: () -> Unit,
+    onDeleteChat: () -> Unit,
 ) {
     val context = LocalContext.current
+    val view = LocalView.current
     val listState = rememberLazyListState()
     val scope = rememberCoroutineScope()
     val allImageUrls = remember(state.messages) {
@@ -344,7 +360,25 @@ fun ChatScreen(
             .distinct()
     }
     val isChannelChat = state.chatType.equals("channel", ignoreCase = true)
+    val isPrivateChat = state.chatType.equals("private", ignoreCase = true)
     val timelineItems = remember(state.messages) { buildChatTimelineItems(state.messages) }
+    val senderNameByUserId = remember(state.messages) {
+        state.messages
+            .mapNotNull { message ->
+                val name = message.senderDisplayName?.trim().orEmpty()
+                if (name.isBlank()) null else message.senderId to name
+            }
+            .toMap()
+    }
+    val replyAuthorByMessageId = remember(state.messages, senderNameByUserId) {
+        state.messages.associate { message ->
+            val resolved = message.senderDisplayName
+                ?.takeIf { it.isNotBlank() }
+                ?: senderNameByUserId[message.senderId]
+                ?: "Unknown user"
+            message.id to resolved
+        }
+    }
     var didInitialAutoScroll by remember(state.chatId) { mutableStateOf(false) }
     var viewerImageIndex by remember { mutableStateOf<Int?>(null) }
     var viewerVideoUrl by remember { mutableStateOf<String?>(null) }
@@ -365,6 +399,8 @@ fun ChatScreen(
     var giphyErrorMessage by remember { mutableStateOf<String?>(null) }
     var isPickerSending by remember { mutableStateOf(false) }
     var showChatMenu by remember { mutableStateOf(false) }
+    var showClearHistoryDialog by remember { mutableStateOf(false) }
+    var showDeleteChatDialog by remember { mutableStateOf(false) }
     var showChatInfoSheet by remember { mutableStateOf(false) }
     var chatInfoTab by remember { mutableStateOf(ChatInfoTab.Media) }
     var composerValue by remember { mutableStateOf(TextFieldValue(state.inputText)) }
@@ -393,6 +429,22 @@ fun ChatScreen(
             lastVisibleIndex < lastIndex - 1
         }
     }
+    val isLightTheme = MaterialTheme.colorScheme.background.luminance() > 0.5f
+    val chatTopBarColor = if (isLightTheme) {
+        MaterialTheme.colorScheme.surface.copy(alpha = 0.98f)
+    } else {
+        MaterialTheme.colorScheme.surface
+            .copy(alpha = 0.92f)
+            .compositeOver(Color(0xFF1B1A22))
+    }
+    if (!view.isInEditMode) {
+        SideEffect {
+            val window = (context as? Activity)?.window ?: return@SideEffect
+            window.statusBarColor = chatTopBarColor.toArgb()
+            WindowCompat.getInsetsController(window, view)?.isAppearanceLightStatusBars =
+                chatTopBarColor.luminance() > 0.5f
+        }
+    }
 
     LaunchedEffect(state.isRecordingVoice) {
         if (!state.isRecordingVoice) return@LaunchedEffect
@@ -439,6 +491,11 @@ fun ChatScreen(
             onInlineSearchChanged("")
         }
     }
+    LaunchedEffect(state.chatDeletedNonce) {
+        if (state.chatDeletedNonce > 0L) {
+            onBack()
+        }
+    }
     LaunchedEffect(emojiPickerTab, gifSearchQuery, giphyApiKey) {
         if (emojiPickerTab != ComposerPickerTab.Gif) return@LaunchedEffect
         val query = gifSearchQuery.trim()
@@ -486,11 +543,19 @@ fun ChatScreen(
             .fillMaxSize()
             .background(
                 brush = Brush.verticalGradient(
-                    colors = listOf(
-                        Color(0xFF1B1A22),
-                        Color(0xFF242034),
-                        Color(0xFF1A202A),
-                    ),
+                    colors = if (isLightTheme) {
+                        listOf(
+                            Color(0xFFE1DCEC),
+                            Color(0xFFD8D2E4),
+                            Color(0xFFCFC8DC),
+                        )
+                    } else {
+                        listOf(
+                            Color(0xFF1B1A22),
+                            Color(0xFF242034),
+                            Color(0xFF1A202A),
+                        )
+                    },
                 ),
             )
             .windowInsetsPadding(WindowInsets.safeDrawing)
@@ -500,7 +565,7 @@ fun ChatScreen(
             Row(
                 modifier = Modifier
                     .fillMaxWidth()
-                    .background(MaterialTheme.colorScheme.surface.copy(alpha = 0.92f))
+                    .background(chatTopBarColor)
                     .padding(horizontal = 8.dp, vertical = 6.dp),
                 verticalAlignment = Alignment.CenterVertically,
                 horizontalArrangement = Arrangement.spacedBy(8.dp),
@@ -533,7 +598,7 @@ fun ChatScreen(
             Row(
                 modifier = Modifier
                     .fillMaxWidth()
-                    .background(MaterialTheme.colorScheme.surface.copy(alpha = 0.9f))
+                    .background(chatTopBarColor)
                     .padding(horizontal = 8.dp, vertical = 6.dp),
                 verticalAlignment = Alignment.CenterVertically,
                 horizontalArrangement = Arrangement.spacedBy(8.dp),
@@ -610,15 +675,15 @@ fun ChatScreen(
                         onDismissRequest = { showChatMenu = false },
                     ) {
                         DropdownMenuItem(
-                            text = { Text("Chat info") },
-                            leadingIcon = { Icon(Icons.Filled.Info, contentDescription = null) },
+                            text = { Text(stringResource(id = R.string.chat_menu_notifications)) },
+                            leadingIcon = { Icon(Icons.Filled.Notifications, contentDescription = null) },
                             onClick = {
                                 showChatMenu = false
-                                showChatInfoSheet = true
+                                onToggleChatNotifications()
                             },
                         )
                         DropdownMenuItem(
-                            text = { Text("Search") },
+                            text = { Text(stringResource(id = R.string.chat_menu_search)) },
                             leadingIcon = { Icon(Icons.Filled.Search, contentDescription = null) },
                             onClick = {
                                 showChatMenu = false
@@ -626,19 +691,28 @@ fun ChatScreen(
                             },
                         )
                         DropdownMenuItem(
-                            text = { Text("Change wallpaper") },
+                            text = { Text(stringResource(id = R.string.chat_menu_change_wallpaper)) },
                             leadingIcon = { Icon(Icons.Filled.Wallpaper, contentDescription = null) },
-                            onClick = { showChatMenu = false },
+                            onClick = {
+                                showChatMenu = false
+                                Toast.makeText(context, context.getString(R.string.chat_wallpaper_coming_soon), Toast.LENGTH_SHORT).show()
+                            },
                         )
                         DropdownMenuItem(
-                            text = { Text("Notifications") },
-                            leadingIcon = { Icon(Icons.Filled.Notifications, contentDescription = null) },
-                            onClick = { showChatMenu = false },
-                        )
-                        DropdownMenuItem(
-                            text = { Text("Clear history") },
+                            text = { Text(stringResource(id = R.string.chat_menu_clear_history)) },
                             leadingIcon = { Icon(Icons.Filled.DeleteOutline, contentDescription = null) },
-                            onClick = { showChatMenu = false },
+                            onClick = {
+                                showChatMenu = false
+                                showClearHistoryDialog = true
+                            },
+                        )
+                        DropdownMenuItem(
+                            text = { Text(if (isPrivateChat) stringResource(id = R.string.chat_delete_dialog) else stringResource(id = R.string.chat_leave_delete)) },
+                            leadingIcon = { Icon(Icons.Filled.DeleteOutline, contentDescription = null) },
+                            onClick = {
+                                showChatMenu = false
+                                showDeleteChatDialog = true
+                            },
                         )
                     }
                 }
@@ -657,7 +731,7 @@ fun ChatScreen(
                     value = state.inlineSearchQuery,
                     onValueChange = onInlineSearchChanged,
                     modifier = Modifier.weight(1f),
-                    label = { Text("Search in chat") },
+                    label = { Text(stringResource(id = R.string.chat_search_in_chat)) },
                     singleLine = true,
                 )
                 IconButton(
@@ -678,7 +752,7 @@ fun ChatScreen(
         }
         if (showInlineSearch && state.inlineSearchMatches.isNotEmpty()) {
             Text(
-                text = "Matches: ${state.inlineSearchMatches.size}",
+                text = stringResource(id = R.string.chat_search_matches, state.inlineSearchMatches.size),
                 modifier = Modifier.padding(horizontal = 12.dp, vertical = 2.dp),
                 style = MaterialTheme.typography.labelSmall,
             )
@@ -702,7 +776,7 @@ fun ChatScreen(
                 )
                 Column(modifier = Modifier.weight(1f)) {
                     Text(
-                        text = "Pinned message",
+                        text = stringResource(id = R.string.chat_pinned_message),
                         style = MaterialTheme.typography.labelSmall,
                         fontWeight = FontWeight.SemiBold,
                     )
@@ -823,6 +897,8 @@ fun ChatScreen(
                                 isSelected = isSelected,
                                 isMultiSelecting = state.actionState.mode == MessageSelectionMode.MULTI,
                                 isInlineHighlighted = state.highlightedMessageId == message.id,
+                                senderNameByUserId = senderNameByUserId,
+                                replyAuthorByMessageId = replyAuthorByMessageId,
                                 reactions = state.reactionByMessageId[message.id].orEmpty(),
                                 onAttachmentImageClick = { imageUrl ->
                                     val idx = allImageUrls.indexOf(imageUrl)
@@ -962,7 +1038,7 @@ fun ChatScreen(
                                 horizontalArrangement = Arrangement.spacedBy(12.dp),
                             ) {
                                 Icon(imageVector = Icons.AutoMirrored.Filled.Reply, contentDescription = null)
-                                Text("Reply", style = MaterialTheme.typography.bodyLarge)
+                                Text(stringResource(id = R.string.chat_action_reply), style = MaterialTheme.typography.bodyLarge)
                             }
                         }
                         Surface(
@@ -984,7 +1060,7 @@ fun ChatScreen(
                             ) {
                                 Icon(imageVector = Icons.Filled.Edit, contentDescription = null)
                                 Text(
-                                    "Edit",
+                                    stringResource(id = R.string.chat_action_edit),
                                     style = MaterialTheme.typography.bodyLarge,
                                     color = if (state.selectedCanEdit) {
                                         MaterialTheme.colorScheme.onSurface
@@ -1013,7 +1089,7 @@ fun ChatScreen(
                                 horizontalArrangement = Arrangement.spacedBy(12.dp),
                             ) {
                                 Icon(imageVector = Icons.AutoMirrored.Filled.Forward, contentDescription = null)
-                                Text("Forward", style = MaterialTheme.typography.bodyLarge)
+                                Text(stringResource(id = R.string.chat_action_forward), style = MaterialTheme.typography.bodyLarge)
                             }
                         }
                         Surface(
@@ -1041,7 +1117,7 @@ fun ChatScreen(
                                     tint = MaterialTheme.colorScheme.error,
                                 )
                                 Text(
-                                    "Delete",
+                                    stringResource(id = R.string.chat_action_delete),
                                     style = MaterialTheme.typography.bodyLarge,
                                     color = MaterialTheme.colorScheme.error,
                                 )
@@ -1053,7 +1129,7 @@ fun ChatScreen(
                                 onClearSelection()
                             },
                             modifier = Modifier.fillMaxWidth(),
-                        ) { Text("Close") }
+                        ) { Text(stringResource(id = R.string.common_close)) }
                     }
                 }
             }
@@ -1072,14 +1148,14 @@ fun ChatScreen(
                 ) {
                     Text(
                         text = if (state.forwardingMessageIds.size == 1) {
-                            "Forward message #${state.forwardingMessageIds.first()}"
+                            stringResource(id = R.string.chat_forward_one, state.forwardingMessageIds.first())
                         } else {
-                            "Forward ${state.forwardingMessageIds.size} messages"
+                            stringResource(id = R.string.chat_forward_many, state.forwardingMessageIds.size)
                         },
                         style = MaterialTheme.typography.labelLarge,
                     )
                     if (state.availableForwardTargets.isEmpty()) {
-                        Text("No available chats")
+                        Text(stringResource(id = R.string.chat_no_available_chats))
                     } else {
                         state.availableForwardTargets.forEach { target ->
                             Button(
@@ -1096,7 +1172,7 @@ fun ChatScreen(
                         enabled = !state.isForwarding,
                         modifier = Modifier.fillMaxWidth(),
                     ) {
-                        Text(if (state.isForwarding) "Forwarding..." else "Cancel")
+                        Text(if (state.isForwarding) stringResource(id = R.string.chat_forwarding) else stringResource(id = R.string.common_cancel))
                     }
                 }
             }
@@ -1262,9 +1338,14 @@ fun ChatScreen(
 
         if (state.replyToMessage != null || state.editingMessage != null) {
             val header = if (state.editingMessage != null) {
-                "Editing message #${state.editingMessage.id}"
+                stringResource(id = R.string.chat_editing_message, state.editingMessage.id)
             } else {
-                "Reply to ${state.replyToMessage?.senderDisplayName ?: "#${state.replyToMessage?.id}"}"
+                "${stringResource(id = R.string.chat_reply_to)} ${
+                    state.replyToMessage?.senderDisplayName
+                        ?.takeIf { it.isNotBlank() }
+                        ?: state.replyToMessage?.senderId?.let { senderNameByUserId[it] }
+                        ?: stringResource(id = R.string.common_unknown_user)
+                }"
             }
             Row(
                 modifier = Modifier
@@ -1275,7 +1356,7 @@ fun ChatScreen(
                 verticalAlignment = Alignment.CenterVertically,
             ) {
                 Text(text = header, style = MaterialTheme.typography.bodySmall)
-                Button(onClick = onCancelComposeAction) { Text("Cancel") }
+                Button(onClick = onCancelComposeAction) { Text(stringResource(id = R.string.common_cancel)) }
             }
         }
 
@@ -1288,6 +1369,7 @@ fun ChatScreen(
             )
         } else if (isChannelChat && !state.canSendMessages) {
             ChannelReadOnlyBar(
+                onToggleNotifications = onToggleChatNotifications,
                 modifier = Modifier
                     .fillMaxWidth()
                     .navigationBarsPadding()
@@ -1417,7 +1499,8 @@ fun ChatScreen(
                                 onInputChanged(it.text)
                             },
                             modifier = Modifier.weight(1f),
-                            placeholder = { Text("Message") },
+                            placeholder = { Text(stringResource(id = R.string.chat_message_placeholder)) },
+                            
                             shape = RoundedCornerShape(14.dp),
                             maxLines = 4,
                             colors = TextFieldDefaults.colors(
@@ -1486,13 +1569,13 @@ fun ChatScreen(
         if (showDeleteDialog) {
             AlertDialog(
                 onDismissRequest = { showDeleteDialog = false },
-                title = { Text("Delete message") },
+                title = { Text(stringResource(id = R.string.chat_delete_message_title)) },
                 text = {
                     Text(
                         if (pendingDeleteForAll) {
-                            "Delete selected message for everyone?"
+                            stringResource(id = R.string.chat_delete_message_for_everyone)
                         } else {
-                            "Delete selected message(s) for you?"
+                            stringResource(id = R.string.chat_delete_message_for_me)
                         }
                     )
                 },
@@ -1503,7 +1586,7 @@ fun ChatScreen(
                             showDeleteDialog = false
                             pendingDeleteForAll = false
                         },
-                    ) { Text("Delete") }
+                    ) { Text(stringResource(id = R.string.common_delete)) }
                 },
                 dismissButton = {
                     TextButton(
@@ -1511,7 +1594,51 @@ fun ChatScreen(
                             showDeleteDialog = false
                             pendingDeleteForAll = false
                         },
-                    ) { Text("Cancel") }
+                    ) { Text(stringResource(id = R.string.common_cancel)) }
+                },
+            )
+        }
+        if (showClearHistoryDialog) {
+            AlertDialog(
+                onDismissRequest = { showClearHistoryDialog = false },
+                title = { Text(stringResource(id = R.string.chat_menu_clear_history)) },
+                text = { Text(stringResource(id = R.string.chat_clear_history_confirm)) },
+                confirmButton = {
+                    TextButton(
+                        onClick = {
+                            onClearHistory()
+                            showClearHistoryDialog = false
+                        },
+                    ) { Text(stringResource(id = R.string.chat_clear)) }
+                },
+                dismissButton = {
+                    TextButton(onClick = { showClearHistoryDialog = false }) { Text(stringResource(id = R.string.common_cancel)) }
+                },
+            )
+        }
+        if (showDeleteChatDialog) {
+            AlertDialog(
+                onDismissRequest = { showDeleteChatDialog = false },
+                title = { Text(if (isPrivateChat) stringResource(id = R.string.chat_delete_dialog) else stringResource(id = R.string.chat_leave_chat)) },
+                text = {
+                    Text(
+                        if (isPrivateChat) {
+                            stringResource(id = R.string.chat_delete_dialog_confirm)
+                        } else {
+                            stringResource(id = R.string.chat_leave_delete_confirm)
+                        }
+                    )
+                },
+                confirmButton = {
+                    TextButton(
+                        onClick = {
+                            onDeleteChat()
+                            showDeleteChatDialog = false
+                        },
+                    ) { Text(if (isPrivateChat) stringResource(id = R.string.common_delete) else stringResource(id = R.string.chat_leave)) }
+                },
+                dismissButton = {
+                    TextButton(onClick = { showDeleteChatDialog = false }) { Text(stringResource(id = R.string.common_cancel)) }
                 },
             )
         }
@@ -1577,7 +1704,7 @@ fun ChatScreen(
                                 }
                             },
                             enabled = currentIndex > 0,
-                        ) { Text("Prev") }
+                        ) { Text(stringResource(id = R.string.chat_search_prev)) }
                         Button(
                             onClick = {
                                 viewerImageIndex = if (allImageUrls.isEmpty()) null else {
@@ -1585,7 +1712,7 @@ fun ChatScreen(
                                 }
                             },
                             enabled = currentIndex < allImageUrls.lastIndex,
-                        ) { Text("Next") }
+                        ) { Text(stringResource(id = R.string.chat_search_next)) }
                     }
                 }
             }
@@ -1826,7 +1953,7 @@ fun ChatScreen(
                                         onValueChange = { gifSearchQuery = it },
                                         modifier = Modifier.fillMaxWidth(),
                                         singleLine = true,
-                                        placeholder = { Text("Search GIFs") },
+                                        placeholder = { Text(stringResource(id = R.string.chat_search_gifs)) },
                                     )
                                     when {
                                         isGiphyLoading -> {
@@ -1945,6 +2072,8 @@ private fun MessageBubble(
     isSelected: Boolean,
     isMultiSelecting: Boolean,
     isInlineHighlighted: Boolean,
+    senderNameByUserId: Map<Long, String>,
+    replyAuthorByMessageId: Map<Long, String>,
     reactions: List<ru.daemonlord.messenger.domain.message.model.MessageReaction>,
     onAttachmentImageClick: (String) -> Unit,
     onAttachmentVideoClick: (String) -> Unit,
@@ -1981,6 +2110,20 @@ private fun MessageBubble(
     } else {
         MaterialTheme.colorScheme.onSurfaceVariant
     }
+    val senderName = message.senderDisplayName
+        ?.takeIf { it.isNotBlank() }
+        ?: senderNameByUserId[message.senderId]
+    val legacyTextUrl = message.text?.trim()?.takeIf { it.startsWith("http", ignoreCase = true) }
+    val hasLegacyStickerImage = message.attachments.isEmpty() &&
+        message.type.equals("image", ignoreCase = true) &&
+        !legacyTextUrl.isNullOrBlank() &&
+        isStickerAsset(fileUrl = legacyTextUrl, fileType = "image/url")
+    val singleImageAttachment = message.attachments.singleOrNull()?.takeIf {
+        it.fileType.lowercase().startsWith("image/")
+    }
+    val hasSingleStickerAttachment = singleImageAttachment?.let {
+        isStickerAsset(fileUrl = it.fileUrl, fileType = it.fileType)
+    } == true || hasLegacyStickerImage
 
     Row(
         modifier = Modifier.fillMaxWidth(),
@@ -1996,26 +2139,43 @@ private fun MessageBubble(
         }
         Column(
             modifier = Modifier
-                .fillMaxWidth(if (renderAsChannelPost) 0.94f else 0.8f)
-                .widthIn(min = if (renderAsChannelPost) 120.dp else 82.dp)
-                .background(
-                    color = when {
-                        isSelected -> MaterialTheme.colorScheme.tertiaryContainer
-                        isInlineHighlighted -> MaterialTheme.colorScheme.secondaryContainer
-                        else -> bubbleColor
+                .fillMaxWidth(
+                    if (hasSingleStickerAttachment) {
+                        if (renderAsChannelPost) 0.58f else 0.52f
+                    } else if (renderAsChannelPost) {
+                        0.94f
+                    } else {
+                        0.8f
+                    },
+                )
+                .widthIn(min = if (hasSingleStickerAttachment) 96.dp else if (renderAsChannelPost) 120.dp else 82.dp)
+                .then(
+                    if (hasSingleStickerAttachment) {
+                        Modifier
+                    } else {
+                        Modifier.background(
+                            color = when {
+                                isSelected -> MaterialTheme.colorScheme.tertiaryContainer
+                                isInlineHighlighted -> MaterialTheme.colorScheme.secondaryContainer
+                                else -> bubbleColor
+                            },
+                            shape = bubbleShape,
+                        )
                     },
-                    shape = bubbleShape,
                 )
                 .combinedClickable(
                     onClick = onClick,
                     onLongClick = onLongPress,
                 )
-                .padding(horizontal = if (renderAsChannelPost) 11.dp else 10.dp, vertical = 7.dp),
+                .padding(
+                    horizontal = if (hasSingleStickerAttachment) 0.dp else if (renderAsChannelPost) 11.dp else 10.dp,
+                    vertical = if (hasSingleStickerAttachment) 2.dp else 7.dp,
+                ),
             verticalArrangement = Arrangement.spacedBy(3.dp),
         ) {
-            if ((!alignAsOutgoing || renderAsChannelPost) && !message.senderDisplayName.isNullOrBlank()) {
+            if ((!alignAsOutgoing || renderAsChannelPost) && !senderName.isNullOrBlank()) {
                 Text(
-                    text = message.senderDisplayName,
+                    text = senderName,
                     style = MaterialTheme.typography.labelMedium,
                     fontWeight = FontWeight.SemiBold,
                     color = MaterialTheme.colorScheme.primary,
@@ -2031,7 +2191,10 @@ private fun MessageBubble(
             }
 
             if (message.replyToMessageId != null) {
-                val replyAuthor = message.replyPreviewSenderName?.takeIf { it.isNotBlank() } ?: "#${message.replyToMessageId}"
+                val replyAuthor = message.replyPreviewSenderName
+                    ?.takeIf { it.isNotBlank() }
+                    ?: replyAuthorByMessageId[message.replyToMessageId]
+                    ?: "Unknown user"
                 val replySnippet = message.replyPreviewText?.takeIf { it.isNotBlank() } ?: "[media]"
                 Row(
                     modifier = Modifier
@@ -2092,15 +2255,25 @@ private fun MessageBubble(
                 )
             }
 
-            if (isLegacyImageUrlMessage && textUrl != null) {
-                val badgeLabel = mediaBadgeLabel(fileType = "image/url", url = textUrl)
+            if (isLegacyImageUrlMessage) {
+                val isLegacyStickerMessage = isStickerAsset(fileUrl = textUrl, fileType = "image/url")
+                val badgeLabel = if (isLegacyStickerMessage) null else mediaBadgeLabel(fileType = "image/url", url = textUrl)
+                val openable = !isLegacyStickerMessage && badgeLabel == null
                 Box(
                     modifier = Modifier
-                        .fillMaxWidth()
-                        .height(188.dp)
+                        .then(
+                            if (isLegacyStickerMessage) {
+                                Modifier
+                                    .size(176.dp)
+                            } else {
+                                Modifier
+                                    .fillMaxWidth()
+                                    .height(188.dp)
+                            },
+                        )
                         .clip(RoundedCornerShape(12.dp))
                         .let { base ->
-                            if (isGifOrStickerLegacyImage) {
+                            if (isGifOrStickerLegacyImage || !openable) {
                                 base
                             } else {
                                 base.clickable { onAttachmentImageClick(textUrl) }
@@ -2111,7 +2284,7 @@ private fun MessageBubble(
                         model = textUrl,
                         contentDescription = "Image",
                         modifier = Modifier.fillMaxSize(),
-                        contentScale = ContentScale.Crop,
+                        contentScale = if (isLegacyStickerMessage) ContentScale.Fit else ContentScale.Crop,
                     )
                     if (!badgeLabel.isNullOrBlank()) {
                         MediaTypeBadge(
@@ -2124,7 +2297,7 @@ private fun MessageBubble(
                 }
             }
 
-            if (isLegacyVideoUrlMessage && textUrl != null) {
+            if (isLegacyVideoUrlMessage) {
                 VideoAttachmentCard(
                     url = textUrl,
                     fileType = message.type,
@@ -2157,12 +2330,21 @@ private fun MessageBubble(
                 if (imageAttachments.isNotEmpty()) {
                     if (imageAttachments.size == 1) {
                         val single = imageAttachments.first()
-                        val badgeLabel = mediaBadgeLabel(fileType = single.fileType, url = single.fileUrl)
-                        val openable = badgeLabel == null
+                        val isStickerImage = isStickerAsset(fileUrl = single.fileUrl, fileType = single.fileType)
+                        val badgeLabel = if (isStickerImage) null else mediaBadgeLabel(fileType = single.fileType, url = single.fileUrl)
+                        val openable = !isStickerImage && badgeLabel == null
                         Box(
                             modifier = Modifier
-                                .fillMaxWidth()
-                                .height(188.dp)
+                                .then(
+                                    if (isStickerImage) {
+                                        Modifier
+                                            .size(176.dp)
+                                    } else {
+                                        Modifier
+                                            .fillMaxWidth()
+                                            .height(188.dp)
+                                    },
+                                )
                                 .clip(RoundedCornerShape(12.dp))
                                 .let { base ->
                                     if (openable) base.clickable { onAttachmentImageClick(single.fileUrl) } else base
@@ -2172,7 +2354,7 @@ private fun MessageBubble(
                                 model = single.fileUrl,
                                 contentDescription = "Image",
                                 modifier = Modifier.fillMaxSize(),
-                                contentScale = ContentScale.Crop,
+                                contentScale = if (isStickerImage) ContentScale.Fit else ContentScale.Crop,
                             )
                             if (!badgeLabel.isNullOrBlank()) {
                                 MediaTypeBadge(
@@ -2279,12 +2461,16 @@ private fun MessageBubble(
                 modifier = Modifier.fillMaxWidth(),
                 horizontalArrangement = Arrangement.End,
             ) {
-                val status = when (message.status) {
-                    "read" -> " ✓✓"
-                    "delivered" -> " ✓✓"
-                    "sent" -> " ✓"
-                    "pending" -> " …"
-                    else -> ""
+                val status = if (isOutgoing && !renderAsChannelPost) {
+                    when (message.status) {
+                        "read" -> " ✓✓"
+                        "delivered" -> " ✓✓"
+                        "sent" -> " ✓"
+                        "pending" -> " …"
+                        else -> ""
+                    }
+                } else {
+                    ""
                 }
                 Text(
                     text = if (renderAsChannelPost) {
@@ -2362,7 +2548,7 @@ private fun CircleVideoAttachmentPlayer(url: String) {
                 }
             },
         )
-        Text("Circle video", style = MaterialTheme.typography.labelSmall)
+        Text(stringResource(id = R.string.chat_circle_video), style = MaterialTheme.typography.labelSmall)
     }
 }
 
@@ -2488,43 +2674,28 @@ private fun DaySeparatorChip(label: String) {
 
 @Composable
 private fun ChannelReadOnlyBar(
+    onToggleNotifications: () -> Unit,
     modifier: Modifier = Modifier,
 ) {
     Row(
         modifier = modifier,
-        horizontalArrangement = Arrangement.spacedBy(8.dp),
+        horizontalArrangement = Arrangement.spacedBy(0.dp),
         verticalAlignment = Alignment.CenterVertically,
     ) {
-        Surface(
-            shape = CircleShape,
-            color = MaterialTheme.colorScheme.surface.copy(alpha = 0.94f),
-            modifier = Modifier.size(46.dp),
-        ) {
-            IconButton(onClick = { }) {
-                Icon(imageVector = Icons.Filled.Search, contentDescription = "Search in channel")
-            }
-        }
         Surface(
             shape = RoundedCornerShape(999.dp),
             color = MaterialTheme.colorScheme.surface.copy(alpha = 0.94f),
-            modifier = Modifier.weight(1f),
+            modifier = Modifier
+                .weight(1f)
+                .clickable { onToggleNotifications() },
         ) {
             Text(
-                text = "Включить звук",
+                text = stringResource(id = R.string.chat_enable_sound),
                 modifier = Modifier.padding(horizontal = 16.dp, vertical = 12.dp),
                 style = MaterialTheme.typography.bodyMedium,
                 textAlign = androidx.compose.ui.text.style.TextAlign.Center,
             )
         }
-        Surface(
-            shape = CircleShape,
-            color = MaterialTheme.colorScheme.surface.copy(alpha = 0.94f),
-            modifier = Modifier.size(46.dp),
-        ) {
-            IconButton(onClick = { }) {
-                Icon(imageVector = Icons.Filled.Notifications, contentDescription = "Channel notifications")
-            }
-        }
     }
 }
 
@@ -2553,7 +2724,7 @@ private fun MultiSelectActionBar(
                 enabled = canReply,
                 modifier = Modifier.fillMaxWidth(),
             ) {
-                Text("Reply")
+                Text(stringResource(id = R.string.chat_action_reply))
             }
         }
         Surface(
@@ -2566,7 +2737,7 @@ private fun MultiSelectActionBar(
                 enabled = selectedCount > 0,
                 modifier = Modifier.fillMaxWidth(),
             ) {
-                Text("Forward")
+                Text(stringResource(id = R.string.chat_action_forward))
             }
         }
     }
@@ -2578,7 +2749,7 @@ private fun parseMessageLocalDate(createdAt: String): LocalDate? {
     }.getOrNull()
 }
 
-private val daySeparatorFormatter: DateTimeFormatter = DateTimeFormatter.ofPattern("d MMMM", Locale("ru"))
+private val daySeparatorFormatter: DateTimeFormatter = DateTimeFormatter.ofPattern("d MMMM", Locale.getDefault())
 
 private fun formatDateSeparatorLabel(date: LocalDate): String {
     val today = LocalDate.now()
@@ -2630,8 +2801,8 @@ private fun VoiceRecordingStatusRow(
                 verticalAlignment = Alignment.CenterVertically,
             ) {
                 Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
-                    Button(onClick = onCancel) { Text("Cancel") }
-                    Button(onClick = onSend) { Text("Send") }
+                    Button(onClick = onCancel) { Text(stringResource(id = R.string.common_cancel)) }
+                    Button(onClick = onSend) { Text(stringResource(id = R.string.common_send)) }
                 }
             }
         }
@@ -3521,7 +3692,16 @@ private fun isGifLikeUrl(url: String): Boolean {
 private fun isStickerLikeUrl(url: String): Boolean {
     if (url.isBlank()) return false
     val normalized = url.lowercase(Locale.getDefault())
-    return normalized.contains("twemoji") || normalized.endsWith(".webp")
+    return normalized.contains("twemoji") ||
+        normalized.endsWith(".webp") ||
+        normalized.contains("sticker_") ||
+        normalized.contains("/stickers/")
+}
+
+private fun isStickerAsset(fileUrl: String, fileType: String): Boolean {
+    val normalizedType = fileType.lowercase(Locale.getDefault())
+    if (normalizedType.contains("webp")) return true
+    return isStickerLikeUrl(fileUrl)
 }
 
 private fun mediaBadgeLabel(fileType: String, url: String): String? {
diff --git a/android/app/src/main/java/ru/daemonlord/messenger/ui/chats/ChatListScreen.kt b/android/app/src/main/java/ru/daemonlord/messenger/ui/chats/ChatListScreen.kt
index f6e3081..23049dd 100644
--- a/android/app/src/main/java/ru/daemonlord/messenger/ui/chats/ChatListScreen.kt
+++ b/android/app/src/main/java/ru/daemonlord/messenger/ui/chats/ChatListScreen.kt
@@ -30,9 +30,11 @@ import androidx.compose.material3.AssistChip
 import androidx.compose.material3.AssistChipDefaults
 import androidx.compose.material3.Button
 import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.Checkbox
 import androidx.compose.material3.DropdownMenu
 import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
@@ -40,6 +42,7 @@ import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.OutlinedTextFieldDefaults
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBar
 import androidx.compose.material3.pulltorefresh.PullToRefreshBox
 import androidx.compose.runtime.Composable
@@ -56,6 +59,7 @@ import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.ui.platform.LocalConfiguration
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
@@ -68,17 +72,21 @@ import androidx.compose.material.icons.filled.Close
 import androidx.compose.material.icons.filled.Check
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material.icons.filled.DoneAll
+import androidx.compose.material.icons.filled.Groups
 import androidx.compose.material.icons.filled.Inventory2
 import androidx.compose.material.icons.filled.FolderOpen
 import androidx.compose.material.icons.filled.LightMode
+import androidx.compose.material.icons.filled.BookmarkBorder
 import androidx.compose.material.icons.filled.MoreVert
 import androidx.compose.material.icons.filled.NotificationsOff
 import androidx.compose.material.icons.filled.PushPin
 import androidx.compose.material.icons.filled.Search
 import androidx.compose.material.icons.filled.DragHandle
 import androidx.compose.material.icons.filled.Clear
+import androidx.appcompat.app.AppCompatDelegate
 import kotlinx.coroutines.flow.collectLatest
 import coil.compose.AsyncImage
+import ru.daemonlord.messenger.R
 import ru.daemonlord.messenger.domain.chat.model.ChatItem
 import java.time.Instant
 import java.time.LocalDate
@@ -134,6 +142,7 @@ fun ChatListRoute(
         onUpdateChatProfile = viewModel::updateChatProfile,
         onClearChat = viewModel::clearChat,
         onDeleteChat = viewModel::deleteChatForMe,
+        onDeleteChatForAll = viewModel::deleteChatForAll,
         onToggleChatMute = viewModel::toggleChatMute,
         onSelectManageChat = viewModel::onManagementChatSelected,
         onCreateInvite = viewModel::createInvite,
@@ -173,6 +182,7 @@ fun ChatListScreen(
     onUpdateChatProfile: (Long, String?, String?) -> Unit,
     onClearChat: (Long) -> Unit,
     onDeleteChat: (Long) -> Unit,
+    onDeleteChatForAll: (Long) -> Unit,
     onToggleChatMute: (Long) -> Unit,
     onSelectManageChat: (Long?) -> Unit,
     onCreateInvite: (Long) -> Unit,
@@ -200,6 +210,13 @@ fun ChatListScreen(
     var selectedManageChatIdText by remember { mutableStateOf("") }
     var manageUserIdText by remember { mutableStateOf("") }
     var manageRoleText by remember { mutableStateOf("member") }
+    var showCreateGroupDialog by remember { mutableStateOf(false) }
+    var showCreateChannelDialog by remember { mutableStateOf(false) }
+    var quickCreateGroupTitle by remember { mutableStateOf("") }
+    var quickCreateChannelTitle by remember { mutableStateOf("") }
+    var quickCreateChannelHandle by remember { mutableStateOf("") }
+    var showDeleteChatsDialog by remember { mutableStateOf(false) }
+    var deleteSelectedForAll by remember { mutableStateOf(false) }
     val isTabletLayout = LocalConfiguration.current.screenWidthDp >= 840
     val listState = rememberLazyListState()
     val selectedChats = remember(state.chats, selectedChatIds) {
@@ -282,9 +299,9 @@ fun ChatListScreen(
                     when {
                         selectedChatIds.isNotEmpty() -> selectedChatIds.size.toString()
                         isSearchMode -> ""
-                        state.isConnecting -> "Connecting..."
-                        state.selectedTab == ChatTab.ARCHIVED -> "Archived"
-                        else -> "Chats"
+                        state.isConnecting -> stringResource(id = R.string.chats_connecting)
+                        state.selectedTab == ChatTab.ARCHIVED -> stringResource(id = R.string.chats_archived)
+                        else -> stringResource(id = R.string.nav_chats)
                     }
                 )
             },
@@ -311,8 +328,7 @@ fun ChatListScreen(
                         )
                     }
                     IconButton(onClick = {
-                        selectedChatIds.forEach { chatId -> onDeleteChat(chatId) }
-                        selectedChatIds = emptySet()
+                        showDeleteChatsDialog = true
                     }) {
                         Icon(
                             imageVector = Icons.Filled.Delete,
@@ -394,45 +410,45 @@ fun ChatListScreen(
                             onDismissRequest = { showDefaultMenu = false },
                         ) {
                             DropdownMenuItem(
-                                text = { Text("Day mode") },
+                                text = {
+                                    val isNight = AppCompatDelegate.getDefaultNightMode() == AppCompatDelegate.MODE_NIGHT_YES
+                                    Text(
+                                        if (isNight) {
+                                            stringResource(id = R.string.menu_day_mode)
+                                        } else {
+                                            stringResource(id = R.string.menu_night_mode)
+                                        }
+                                    )
+                                },
                                 leadingIcon = { Icon(Icons.Filled.LightMode, contentDescription = null) },
                                 onClick = {
                                     showDefaultMenu = false
-                                    Toast.makeText(context, "Theme switch in Settings.", Toast.LENGTH_SHORT).show()
+                                    val isNight = AppCompatDelegate.getDefaultNightMode() == AppCompatDelegate.MODE_NIGHT_YES
+                                    if (isNight) {
+                                        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)
+                                        Toast.makeText(context, context.getString(R.string.toast_day_mode_enabled), Toast.LENGTH_SHORT).show()
+                                    } else {
+                                        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES)
+                                        Toast.makeText(context, context.getString(R.string.toast_night_mode_enabled), Toast.LENGTH_SHORT).show()
+                                    }
                                 },
                             )
                             DropdownMenuItem(
-                                text = { Text("Create group") },
-                                leadingIcon = { Icon(Icons.Filled.FolderOpen, contentDescription = null) },
+                                text = { Text(stringResource(id = R.string.menu_create_group)) },
+                                leadingIcon = { Icon(Icons.Filled.Groups, contentDescription = null) },
                                 onClick = {
                                     showDefaultMenu = false
-                                    managementExpanded = true
+                                    showCreateGroupDialog = true
                                 },
                             )
                             DropdownMenuItem(
-                                text = { Text("Create channel") },
-                                leadingIcon = { Icon(Icons.Filled.FolderOpen, contentDescription = null) },
-                                onClick = {
-                                    showDefaultMenu = false
-                                    managementExpanded = true
-                                },
-                            )
-                            DropdownMenuItem(
-                                text = { Text("Saved") },
-                                leadingIcon = { Icon(Icons.Filled.Inventory2, contentDescription = null) },
+                                text = { Text(stringResource(id = R.string.menu_saved)) },
+                                leadingIcon = { Icon(Icons.Filled.BookmarkBorder, contentDescription = null) },
                                 onClick = {
                                     showDefaultMenu = false
                                     onOpenSaved()
                                 },
                             )
-                            DropdownMenuItem(
-                                text = { Text("Proxy") },
-                                leadingIcon = { Icon(Icons.Filled.NotificationsOff, contentDescription = null) },
-                                onClick = {
-                                    showDefaultMenu = false
-                                    Toast.makeText(context, "Proxy settings will be added next.", Toast.LENGTH_SHORT).show()
-                                },
-                            )
                         }
                     }
                 }
@@ -447,22 +463,22 @@ fun ChatListScreen(
                 horizontalArrangement = Arrangement.spacedBy(8.dp),
             ) {
                 FilterChip(
-                    label = "All",
+                    label = stringResource(id = R.string.filter_all),
                     selected = state.selectedFilter == ChatListFilter.ALL,
                     onClick = { onFilterSelected(ChatListFilter.ALL) },
                 )
                 FilterChip(
-                    label = "People",
+                    label = stringResource(id = R.string.filter_people),
                     selected = state.selectedFilter == ChatListFilter.PEOPLE,
                     onClick = { onFilterSelected(ChatListFilter.PEOPLE) },
                 )
                 FilterChip(
-                    label = "Groups",
+                    label = stringResource(id = R.string.filter_groups),
                     selected = state.selectedFilter == ChatListFilter.GROUPS,
                     onClick = { onFilterSelected(ChatListFilter.GROUPS) },
                 )
                 FilterChip(
-                    label = "Channels",
+                    label = stringResource(id = R.string.filter_channels),
                     selected = state.selectedFilter == ChatListFilter.CHANNELS,
                     onClick = { onFilterSelected(ChatListFilter.CHANNELS) },
                 )
@@ -475,7 +491,7 @@ fun ChatListScreen(
                 ) {
                     when {
                         state.isLoading -> {
-                            CenterState(text = "Loading chats...", loading = true)
+                            CenterState(text = stringResource(id = R.string.chats_loading), loading = true)
                         }
 
                         !state.errorMessage.isNullOrBlank() -> {
@@ -483,7 +499,7 @@ fun ChatListScreen(
                         }
 
                         state.chats.isEmpty() -> {
-                            CenterState(text = "No chats found", loading = false)
+                            CenterState(text = stringResource(id = R.string.chats_not_found), loading = false)
                         }
 
                         else -> {
@@ -759,6 +775,120 @@ fun ChatListScreen(
         }
     }
     }
+    if (showCreateGroupDialog) {
+        AlertDialog(
+            onDismissRequest = { showCreateGroupDialog = false },
+            title = { Text("Create group") },
+            text = {
+                OutlinedTextField(
+                    value = quickCreateGroupTitle,
+                    onValueChange = { quickCreateGroupTitle = it },
+                    label = { Text("Group title") },
+                    singleLine = true,
+                    modifier = Modifier.fillMaxWidth(),
+                )
+            },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        val title = quickCreateGroupTitle.trim()
+                        if (title.isNotBlank()) {
+                            onCreateGroup(title, emptyList())
+                            showCreateGroupDialog = false
+                            quickCreateGroupTitle = ""
+                        }
+                    },
+                ) { Text("Create") }
+            },
+            dismissButton = {
+                TextButton(onClick = { showCreateGroupDialog = false }) { Text("Cancel") }
+            },
+        )
+    }
+    if (showCreateChannelDialog) {
+        AlertDialog(
+            onDismissRequest = { showCreateChannelDialog = false },
+            title = { Text("Create channel") },
+            text = {
+                Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
+                    OutlinedTextField(
+                        value = quickCreateChannelTitle,
+                        onValueChange = { quickCreateChannelTitle = it },
+                        label = { Text("Channel title") },
+                        singleLine = true,
+                        modifier = Modifier.fillMaxWidth(),
+                    )
+                    OutlinedTextField(
+                        value = quickCreateChannelHandle,
+                        onValueChange = { quickCreateChannelHandle = it },
+                        label = { Text("Handle") },
+                        singleLine = true,
+                        modifier = Modifier.fillMaxWidth(),
+                    )
+                }
+            },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        val title = quickCreateChannelTitle.trim()
+                        val handle = quickCreateChannelHandle.trim()
+                        if (title.isNotBlank() && handle.isNotBlank()) {
+                            onCreateChannel(title, handle, null)
+                            showCreateChannelDialog = false
+                            quickCreateChannelTitle = ""
+                            quickCreateChannelHandle = ""
+                        }
+                    },
+                ) { Text("Create") }
+            },
+            dismissButton = {
+                TextButton(onClick = { showCreateChannelDialog = false }) { Text("Cancel") }
+            },
+        )
+    }
+    if (showDeleteChatsDialog) {
+        AlertDialog(
+            onDismissRequest = { showDeleteChatsDialog = false },
+            title = { Text("Delete selected chats") },
+            text = {
+                Column(verticalArrangement = Arrangement.spacedBy(8.dp)) {
+                    Text("Are you sure you want to delete selected chats?")
+                    Row(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .clickable { deleteSelectedForAll = !deleteSelectedForAll },
+                        verticalAlignment = Alignment.CenterVertically,
+                    ) {
+                        Checkbox(
+                            checked = deleteSelectedForAll,
+                            onCheckedChange = { deleteSelectedForAll = it },
+                        )
+                        Text("Delete for all (where allowed)")
+                    }
+                }
+            },
+            confirmButton = {
+                TextButton(
+                    onClick = {
+                        selectedChatIds.forEach { chatId ->
+                            if (deleteSelectedForAll) onDeleteChatForAll(chatId) else onDeleteChat(chatId)
+                        }
+                        selectedChatIds = emptySet()
+                        deleteSelectedForAll = false
+                        showDeleteChatsDialog = false
+                    },
+                ) { Text("Delete") }
+            },
+            dismissButton = {
+                TextButton(
+                    onClick = {
+                        showDeleteChatsDialog = false
+                        deleteSelectedForAll = false
+                    },
+                ) { Text("Cancel") }
+            },
+        )
+    }
 }
 
 @Composable
diff --git a/android/app/src/main/res/values-ru/strings.xml b/android/app/src/main/res/values-ru/strings.xml
new file mode 100644
index 0000000..362d282
--- /dev/null
+++ b/android/app/src/main/res/values-ru/strings.xml
@@ -0,0 +1,130 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">Benya Messenger</string>
+    <string name="nav_chats">Чаты</string>
+    <string name="nav_contacts">Контакты</string>
+    <string name="nav_settings">Настройки</string>
+    <string name="nav_profile">Профиль</string>
+
+    <string name="chats_connecting">Подключение...</string>
+    <string name="chats_archived">Архив</string>
+    <string name="chats_loading">Загрузка чатов...</string>
+    <string name="chats_not_found">Чаты не найдены</string>
+
+    <string name="filter_all">Все</string>
+    <string name="filter_people">Люди</string>
+    <string name="filter_groups">Группы</string>
+    <string name="filter_channels">Каналы</string>
+
+    <string name="menu_day_mode">Дневной режим</string>
+    <string name="menu_night_mode">Ночной режим</string>
+    <string name="menu_create_group">Создать группу</string>
+    <string name="menu_saved">Избранное</string>
+    <string name="toast_day_mode_enabled">Включен дневной режим.</string>
+    <string name="toast_night_mode_enabled">Включен ночной режим.</string>
+
+    <string name="common_cancel">Отмена</string>
+    <string name="common_close">Закрыть</string>
+    <string name="common_delete">Удалить</string>
+    <string name="common_send">Отправить</string>
+    <string name="common_unknown_user">Неизвестный пользователь</string>
+
+    <string name="chat_menu_notifications">Уведомления</string>
+    <string name="chat_menu_search">Поиск</string>
+    <string name="chat_menu_change_wallpaper">Изменить обои</string>
+    <string name="chat_menu_clear_history">Очистить историю</string>
+    <string name="chat_wallpaper_coming_soon">Смена обоев будет добавлена позже.</string>
+    <string name="chat_delete_dialog">Удалить диалог</string>
+    <string name="chat_leave_delete">Выйти и удалить чат</string>
+    <string name="chat_leave_chat">Выйти из чата</string>
+    <string name="chat_leave">Выйти</string>
+    <string name="chat_search_in_chat">Поиск по чату</string>
+    <string name="chat_search_prev">Назад</string>
+    <string name="chat_search_next">Далее</string>
+    <string name="chat_search_gifs">Поиск GIF</string>
+    <string name="chat_search_matches">Совпадений: %1$d</string>
+    <string name="chat_pinned_message">Закрепленное сообщение</string>
+    <string name="chat_message_placeholder">Сообщение</string>
+    <string name="chat_action_reply">Ответить</string>
+    <string name="chat_action_edit">Изменить</string>
+    <string name="chat_action_forward">Переслать</string>
+    <string name="chat_action_delete">Удалить</string>
+    <string name="chat_delete_message_title">Удалить сообщение</string>
+    <string name="chat_forward_one">Переслать сообщение #%1$d</string>
+    <string name="chat_forward_many">Переслать %1$d сообщений</string>
+    <string name="chat_no_available_chats">Нет доступных чатов</string>
+    <string name="chat_forwarding">Пересылка...</string>
+    <string name="chat_editing_message">Редактирование сообщения #%1$d</string>
+    <string name="chat_reply_to">Ответ</string>
+    <string name="chat_delete_message_for_everyone">Удалить выбранное сообщение для всех?</string>
+    <string name="chat_delete_message_for_me">Удалить выбранные сообщения у вас?</string>
+    <string name="chat_clear_history_confirm">Удалить все сообщения в этом чате? Это действие нельзя отменить.</string>
+    <string name="chat_clear">Очистить</string>
+    <string name="chat_delete_dialog_confirm">Удалить диалог у вас? История будет очищена.</string>
+    <string name="chat_leave_delete_confirm">Выйти из чата и убрать его из списка?</string>
+    <string name="chat_enable_sound">Включить звук</string>
+    <string name="chat_circle_video">Видеокружок</string>
+
+    <string name="settings_user_fallback">Пользователь</string>
+    <string name="settings_accounts_header">АККАУНТЫ</string>
+    <string name="settings_no_active_account">Нет активного аккаунта</string>
+    <string name="settings_add_account">Добавить аккаунт</string>
+    <string name="settings_folder_account">Аккаунт</string>
+    <string name="settings_folder_chat">Настройки чатов</string>
+    <string name="settings_folder_privacy">Конфиденциальность</string>
+    <string name="settings_folder_notifications">Уведомления</string>
+    <string name="settings_folder_data">Данные и память</string>
+    <string name="settings_folder_folders">Папки с чатами</string>
+    <string name="settings_folder_devices">Устройства</string>
+    <string name="settings_folder_power">Энергосбережение</string>
+    <string name="settings_folder_language">Язык</string>
+    <string name="settings_account_subtitle">Номер, имя пользователя, «О себе»</string>
+    <string name="settings_chat_subtitle">Обои, ночной режим, анимации</string>
+    <string name="settings_privacy_subtitle">Время захода, устройства, ключи доступа</string>
+    <string name="settings_notifications_subtitle">Звуки, звонки, счетчик сообщений</string>
+    <string name="settings_data_subtitle">Настройки загрузки медиафайлов</string>
+    <string name="settings_folders_subtitle">Сортировка чатов по папкам</string>
+    <string name="settings_devices_subtitle">Управление активными сессиями</string>
+    <string name="settings_power_subtitle">Экономия энергии при низком заряде</string>
+    <string name="settings_placeholder_data">Этот раздел будет расширен на следующем шаге.</string>
+    <string name="settings_placeholder_folders">Управление папками чатов будет добавлено на следующей итерации.</string>
+    <string name="settings_placeholder_power">Настройки энергосбережения будут добавлены отдельным этапом.</string>
+    <string name="settings_language_title">Язык приложения</string>
+    <string name="settings_language_system_subtitle">Использовать язык устройства</string>
+    <string name="settings_language_english_subtitle">Английский</string>
+    <string name="language_system">Системный</string>
+    <string name="language_russian">Русский</string>
+    <string name="language_english">Английский</string>
+    <string name="settings_accounts">Аккаунты</string>
+    <string name="settings_active">Активный</string>
+    <string name="settings_switch">Переключить</string>
+    <string name="settings_open_profile">Открыть профиль</string>
+    <string name="settings_logout">Выйти</string>
+    <string name="settings_appearance">Оформление</string>
+    <string name="theme_light">Светлая</string>
+    <string name="theme_dark">Темная</string>
+    <string name="theme_system">Системная</string>
+    <string name="settings_enable_notifications">Включить уведомления</string>
+    <string name="settings_show_preview">Показывать превью сообщений</string>
+    <string name="settings_refresh_notifications">Обновить историю уведомлений</string>
+    <string name="settings_recent_notifications">Последние уведомления</string>
+    <string name="settings_no_notifications_yet">Пока нет серверных уведомлений.</string>
+    <string name="privacy_private_messages">Личные сообщения</string>
+    <string name="privacy_last_seen">Время захода</string>
+    <string name="privacy_avatar">Аватар</string>
+    <string name="privacy_group_invites">Приглашения в группы</string>
+    <string name="privacy_save">Сохранить приватность</string>
+    <string name="settings_sessions_security">Сессии и безопасность</string>
+    <string name="settings_unknown_device">Неизвестное устройство</string>
+    <string name="settings_unknown_ip">Неизвестный IP</string>
+    <string name="settings_revoke">Отозвать</string>
+    <string name="settings_revoke_all">Отозвать все сессии</string>
+    <string name="settings_2fa_code">Код 2FA</string>
+    <string name="settings_enable">Включить</string>
+    <string name="settings_disable">Выключить</string>
+    <string name="settings_recovery_regen_code">Код для регенерации recovery</string>
+    <string name="settings_regenerate_recovery_codes">Сгенерировать recovery-коды заново</string>
+    <string name="privacy_everyone">все</string>
+    <string name="privacy_contacts">контакты</string>
+    <string name="privacy_nobody">никто</string>
+</resources>
diff --git a/android/app/src/main/res/values/strings.xml b/android/app/src/main/res/values/strings.xml
index 5153ab7..e88aa43 100644
--- a/android/app/src/main/res/values/strings.xml
+++ b/android/app/src/main/res/values/strings.xml
@@ -1,4 +1,130 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string name="app_name">Benya Messenger</string>
+    <string name="nav_chats">Chats</string>
+    <string name="nav_contacts">Contacts</string>
+    <string name="nav_settings">Settings</string>
+    <string name="nav_profile">Profile</string>
+
+    <string name="chats_connecting">Connecting...</string>
+    <string name="chats_archived">Archived</string>
+    <string name="chats_loading">Loading chats...</string>
+
+    <string name="filter_all">All</string>
+    <string name="filter_people">People</string>
+    <string name="filter_groups">Groups</string>
+    <string name="filter_channels">Channels</string>
+
+    <string name="menu_day_mode">Day mode</string>
+    <string name="menu_night_mode">Night mode</string>
+    <string name="menu_create_group">Create group</string>
+    <string name="menu_saved">Saved</string>
+    <string name="toast_day_mode_enabled">Day mode enabled.</string>
+    <string name="toast_night_mode_enabled">Night mode enabled.</string>
+    <string name="chats_not_found">No chats found</string>
+
+    <string name="common_cancel">Cancel</string>
+    <string name="common_close">Close</string>
+    <string name="common_delete">Delete</string>
+    <string name="common_send">Send</string>
+    <string name="common_unknown_user">Unknown user</string>
+
+    <string name="chat_menu_notifications">Notifications</string>
+    <string name="chat_menu_search">Search</string>
+    <string name="chat_menu_change_wallpaper">Change wallpaper</string>
+    <string name="chat_menu_clear_history">Clear history</string>
+    <string name="chat_wallpaper_coming_soon">Wallpaper change will be added later.</string>
+    <string name="chat_delete_dialog">Delete dialog</string>
+    <string name="chat_leave_delete">Leave and delete chat</string>
+    <string name="chat_leave_chat">Leave chat</string>
+    <string name="chat_leave">Leave</string>
+    <string name="chat_search_in_chat">Search in chat</string>
+    <string name="chat_search_prev">Prev</string>
+    <string name="chat_search_next">Next</string>
+    <string name="chat_search_gifs">Search GIFs</string>
+    <string name="chat_search_matches">Matches: %1$d</string>
+    <string name="chat_pinned_message">Pinned message</string>
+    <string name="chat_message_placeholder">Message</string>
+    <string name="chat_action_reply">Reply</string>
+    <string name="chat_action_edit">Edit</string>
+    <string name="chat_action_forward">Forward</string>
+    <string name="chat_action_delete">Delete</string>
+    <string name="chat_delete_message_title">Delete message</string>
+    <string name="chat_forward_one">Forward message #%1$d</string>
+    <string name="chat_forward_many">Forward %1$d messages</string>
+    <string name="chat_no_available_chats">No available chats</string>
+    <string name="chat_forwarding">Forwarding...</string>
+    <string name="chat_editing_message">Editing message #%1$d</string>
+    <string name="chat_reply_to">Reply to</string>
+    <string name="chat_delete_message_for_everyone">Delete selected message for everyone?</string>
+    <string name="chat_delete_message_for_me">Delete selected message(s) for you?</string>
+    <string name="chat_clear_history_confirm">Delete all messages in this chat? This action cannot be undone.</string>
+    <string name="chat_clear">Clear</string>
+    <string name="chat_delete_dialog_confirm">Delete dialog for you? History will be cleared.</string>
+    <string name="chat_leave_delete_confirm">Leave the chat and remove it from your list?</string>
+    <string name="chat_enable_sound">Enable sound</string>
+    <string name="chat_circle_video">Circle video</string>
+
+    <string name="settings_user_fallback">User</string>
+    <string name="settings_accounts_header">ACCOUNTS</string>
+    <string name="settings_no_active_account">No active account</string>
+    <string name="settings_add_account">Add account</string>
+    <string name="settings_folder_account">Account</string>
+    <string name="settings_folder_chat">Chat settings</string>
+    <string name="settings_folder_privacy">Privacy</string>
+    <string name="settings_folder_notifications">Notifications</string>
+    <string name="settings_folder_data">Data and storage</string>
+    <string name="settings_folder_folders">Chat folders</string>
+    <string name="settings_folder_devices">Devices</string>
+    <string name="settings_folder_power">Power saving</string>
+    <string name="settings_folder_language">Language</string>
+    <string name="settings_account_subtitle">Phone number, username, bio</string>
+    <string name="settings_chat_subtitle">Wallpaper, night mode, animations</string>
+    <string name="settings_privacy_subtitle">Last seen, devices, passkeys</string>
+    <string name="settings_notifications_subtitle">Sounds, message counter</string>
+    <string name="settings_data_subtitle">Media download settings</string>
+    <string name="settings_folders_subtitle">Sort chats by folders</string>
+    <string name="settings_devices_subtitle">Manage active sessions</string>
+    <string name="settings_power_subtitle">Save power on low battery</string>
+    <string name="settings_placeholder_data">This section will be expanded in the next step.</string>
+    <string name="settings_placeholder_folders">Chat folders management will be added in next iteration.</string>
+    <string name="settings_placeholder_power">Power saving settings will be added in a separate step.</string>
+    <string name="settings_language_title">App language</string>
+    <string name="settings_language_system_subtitle">Use device language</string>
+    <string name="settings_language_english_subtitle">English</string>
+    <string name="language_system">System</string>
+    <string name="language_russian">Russian</string>
+    <string name="language_english">English</string>
+    <string name="settings_accounts">Accounts</string>
+    <string name="settings_active">Active</string>
+    <string name="settings_switch">Switch</string>
+    <string name="settings_open_profile">Open profile</string>
+    <string name="settings_logout">Logout</string>
+    <string name="settings_appearance">Appearance</string>
+    <string name="theme_light">Light</string>
+    <string name="theme_dark">Dark</string>
+    <string name="theme_system">System</string>
+    <string name="settings_enable_notifications">Enable notifications</string>
+    <string name="settings_show_preview">Show message preview</string>
+    <string name="settings_refresh_notifications">Refresh notification history</string>
+    <string name="settings_recent_notifications">Recent notifications</string>
+    <string name="settings_no_notifications_yet">No server notifications yet.</string>
+    <string name="privacy_private_messages">Private messages</string>
+    <string name="privacy_last_seen">Last seen</string>
+    <string name="privacy_avatar">Avatar</string>
+    <string name="privacy_group_invites">Group invites</string>
+    <string name="privacy_save">Save privacy</string>
+    <string name="settings_sessions_security">Sessions &amp; Security</string>
+    <string name="settings_unknown_device">Unknown device</string>
+    <string name="settings_unknown_ip">Unknown IP</string>
+    <string name="settings_revoke">Revoke</string>
+    <string name="settings_revoke_all">Revoke all sessions</string>
+    <string name="settings_2fa_code">2FA code</string>
+    <string name="settings_enable">Enable</string>
+    <string name="settings_disable">Disable</string>
+    <string name="settings_recovery_regen_code">Code for recovery regeneration</string>
+    <string name="settings_regenerate_recovery_codes">Regenerate recovery codes</string>
+    <string name="privacy_everyone">everyone</string>
+    <string name="privacy_contacts">contacts</string>
+    <string name="privacy_nobody">nobody</string>
 </resources>