fix(web): code review round 2 -- messaging UI bugs and design fidelity

- DetailColumn: remark-edit draft and the history-search modal's open
  state weren't reset on contact switch (no key={topicId}, same long-
  lived instance) -- could silently save a typed remark against the
  WRONG contact. History-search state lifted to MessagesLayout so
  ConversationView's header search icon (previously wired to nothing)
  can open the same modal
- ConversationView: loadOlder's in-flight "restore scroll position"
  callback and its loading flag weren't guarded against a conversation
  switch happening mid-request, and the scroll-to-bottom effect keyed
  only on messages.length so two conversations that happened to load
  the same page size never got scrolled down on open
- ChatListColumn: pinned 系统消息/文件助手 rows used solid-color-square
  avatars like regular contacts; the actual design-code source
  (ChatList.dc.html) and reference screenshots use a light tinted
  background with a colored icon instead
- MessageBubble: own ("我") messages hash-colored their avatar like any
  contact instead of the design's fixed accent blue
- Every send/recall/favorite/forward action swallowed its own failure
  silently (empty .catch or, for forward, no catch at all) -- moved
  Toast from features/auth into app/ (shared) and wired real error
  feedback through it
- MessageContextMenu: added the recall countdown label, Escape-to-close,
  and viewport-edge clamping (a right-click near the window edge could
  render partially off-screen)
- EmojiPanel now defaults to 最近 per the reference (was defaulting to
  表情)
- HistorySearchModal: pagination (searchTopicMessages/getTopicMedia both
  supported cursor/next_cursor already, nothing used it -- silently
  truncated at one page), Escape-to-close, and a brief "没有找到" flash
  on the first keystroke before the debounce caught up
- A handful of design-token corrections (--shadow-btn, NavRail's border/
  spacing, LoginPage's logo radius/brand-panel padding, a placeholder
  icon color) verified against screens/*.dc.html's exact pixel values

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

web/src/app/AppShell.tsx

@@ -15,8 +15,11 @@ import { NavRail } from './NavRail';
 export function AppShell() {
   const contacts = useChatList();
   const bootstrap = useBootstrap();
+  // "sys"/"slf" have their own authoritative unread source in entry_badges (bootstrap.ts) -- excluded
+  // here in case they ever also show up as regular Tinode subscriptions in `contacts`, which would
+  // otherwise double-count the same unread messages into this badge.
   const unreadMessages =
-    contacts.reduce((sum, c) => sum + (c.unread || 0), 0) +
+    contacts.reduce((sum, c) => (c.topic === 'sys' || c.topic === 'slf' ? sum : sum + (c.unread || 0)), 0) +
     (bootstrap.data?.entry_badges?.system_unread_count || 0) +
     (bootstrap.data?.entry_badges?.file_assistant_unread_count || 0);
 

web/src/app/NavRail.tsx

@@ -45,8 +45,8 @@ function NavRailButton({ item }: { item: NavRailItem }) {
 /** Persistent 64px icon rail, visible at >=640px (see App.tsx for the <640 bottom-tab fallback). */
 export function NavRail({ selfInitial = '我', unreadMessages = 0 }: { selfInitial?: string; unreadMessages?: number }) {
   return (
-    <nav className="flex h-full w-16 flex-none flex-col items-center border-r border-border-panel bg-surface-rail pb-3 pt-3.5">
-      <div className="mb-5 grid h-[38px] w-[38px] place-items-center rounded-[10px] bg-accent text-base font-medium text-white">
+    <nav className="flex h-full w-16 flex-none flex-col items-center border-r border-[#e6e9ee] bg-surface-rail pb-3 pt-3.5">
+      <div className="mb-[22px] grid h-[38px] w-[38px] place-items-center rounded-[10px] bg-accent text-base font-medium text-white">
         {selfInitial}
       </div>
       <div className="flex flex-1 flex-col items-center gap-1.5">

web/src/app/Toast.tsx

@@ -0,0 +1,38 @@
+import { useEffect, useRef } from 'react';
+
+import { Icon } from '@/app/Icon';
+import { TOAST_DURATION } from '@/lib/config';
+
+interface ToastProps {
+  message: string;
+  variant?: 'success' | 'error';
+  onDone: () => void;
+}
+
+export function Toast({ message, variant = 'success', onDone }: ToastProps) {
+  // Call sites pass an inline `onDone` arrow, so a plain `[message, onDone]` dependency array
+  // restarts the auto-dismiss timer on every unrelated parent re-render (e.g. typing in an
+  // unrelated field after the toast appears) instead of only when a NEW message is shown.
+  const onDoneRef = useRef(onDone);
+  useEffect(() => {
+    onDoneRef.current = onDone;
+  });
+
+  useEffect(() => {
+    if (!message) return undefined;
+    const timer = window.setTimeout(() => onDoneRef.current(), TOAST_DURATION);
+    return () => window.clearTimeout(timer);
+  }, [message]);
+
+  if (!message) return null;
+
+  return (
+    <div
+      role="status"
+      className="fixed bottom-8 left-1/2 z-50 flex -translate-x-1/2 items-center gap-2 rounded-lg bg-text-heading/94 px-4 py-3 text-sm text-white"
+    >
+      <Icon name={variant === 'error' ? 'error' : 'check_circle'} className={`text-[18px] ${variant === 'error' ? 'text-danger-text' : 'text-online'}`} />
+      {message}
+    </div>
+  );
+}

web/src/features/auth/EnterpriseRegisterPage.tsx

@@ -1,9 +1,9 @@
 import { useState } from 'react';
 
-import { Link } from 'react-router-dom';
+import { Link, useLocation } from 'react-router-dom';
 
 import { Icon } from '@/app/Icon';
-import { Toast } from '@/features/auth/components/Toast';
+import { Toast } from '@/app/Toast';
 import { ImApiError } from '@/lib/api/client';
 import { submitTenantApplication, uploadPublicFile } from '@/lib/api/tenant';
 
@@ -12,6 +12,7 @@ const EMAIL_RE = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
 
 /** README §10.5 / old app's EnterpriseRegister -- a company registering itself as a new tenant. */
 export function EnterpriseRegisterPage() {
+  const tenantCodeHint = (useLocation().state as { tenantCodeHint?: string } | null)?.tenantCodeHint || undefined;
   const [creditCode, setCreditCode] = useState('');
   const [email, setEmail] = useState('');
   const [file, setFile] = useState<File | null>(null);
@@ -32,7 +33,12 @@ export function EnterpriseRegisterPage() {
       if (file) {
         licenseFileId = (await uploadPublicFile(file, 'enterprise_license')).file_id;
       }
-      const data = await submitTenantApplication({ credit_code: creditCode, enterprise_email: email || undefined, license_file_id: licenseFileId });
+      const data = await submitTenantApplication({
+        credit_code: creditCode,
+        enterprise_email: email || undefined,
+        license_file_id: licenseFileId,
+        tenant_code_hint: tenantCodeHint,
+      });
       setReviewDays(Math.max(1, Math.round((data.estimated_review_hours || 24) / 24)));
       setSubmitted(true);
       setToast('提交成功，我们会尽快联系你');

web/src/features/auth/LoginPage.tsx

@@ -67,8 +67,8 @@ export function LoginPage() {
     <div className="flex h-dvh w-full">
       <div className="relative hidden shrink-0 flex-col justify-center overflow-hidden bg-gradient-to-br from-[#1677ff] to-[#0f56c4] px-16 text-white min-[900px]:flex min-[900px]:w-[56%]">
         <div className="pointer-events-none absolute inset-x-0 top-0 h-96 bg-[radial-gradient(circle_at_20%_-10%,rgba(255,255,255,0.25),transparent_60%)]" />
-        <div className="absolute left-16 top-10 flex items-center gap-2.5">
-          <div className="grid h-10 w-10 place-items-center rounded-xl bg-white text-lg font-bold text-accent">M</div>
+        <div className="absolute left-16 top-14 flex items-center gap-2.5">
+          <div className="grid h-10 w-10 place-items-center rounded-[10px] bg-white text-lg font-bold text-accent">M</div>
           <strong className="text-xl font-semibold">{BASE_APP_NAME}</strong>
         </div>
         <h2 className="m-0 max-w-md text-[40px] leading-tight font-semibold text-balance">
@@ -77,7 +77,7 @@ export function LoginPage() {
         <p className="mt-4 max-w-md text-base text-white/80">
           单聊、群聊、通讯录、文件与收藏、音视频通话，消息与回执在桌面端和手机端保持一致。
         </p>
-        <div className="absolute bottom-10 left-16 flex gap-5 text-[13px] text-white/75">
+        <div className="absolute bottom-14 left-16 flex gap-5 text-[13px] text-white/75">
           <span>下载桌面客户端</span>
           <span>iOS / Android</span>
           <span>帮助中心</span>

web/src/features/auth/ResetPasswordPage.tsx

@@ -3,8 +3,8 @@ import { useState } from 'react';
 import { Link, Navigate, useNavigate } from 'react-router-dom';
 
 import { Icon } from '@/app/Icon';
+import { Toast } from '@/app/Toast';
 import { PasswordInput } from '@/features/auth/components/PasswordInput';
-import { Toast } from '@/features/auth/components/Toast';
 import { VerificationCodeButton } from '@/features/auth/components/VerificationCodeButton';
 import { confirmPasswordReset, verifyPasswordResetCode } from '@/lib/api/auth';
 import { ImApiError } from '@/lib/api/client';

web/src/features/auth/TenantEntryPage.tsx

@@ -38,7 +38,7 @@ export function TenantEntryPage() {
 
   return (
     <div className="relative flex h-dvh w-full items-center justify-center bg-surface-page px-6">
-      <Link to="/enterprise-register" className="absolute right-6 top-6 text-sm text-accent no-underline">
+      <Link to="/enterprise-register" state={{ tenantCodeHint: code.trim() }} className="absolute right-6 top-6 text-sm text-accent no-underline">
         企业注册
       </Link>
       <form onSubmit={submit} className="flex w-full max-w-[380px] flex-col gap-5">
@@ -71,7 +71,7 @@ export function TenantEntryPage() {
           {submitting ? '进入中…' : '进入企业'}
         </button>
       </form>
-      <Link to="/feedback" className="absolute bottom-8 text-sm text-accent no-underline">
+      <Link to="/feedback" state={{ tenantCodeHint: code.trim() }} className="absolute bottom-8 text-sm text-accent no-underline">
         遇到问题？
       </Link>
     </div>

web/src/features/auth/TenantFeedbackPage.tsx

@@ -1,9 +1,9 @@
 import { useState } from 'react';
 
-import { Link } from 'react-router-dom';
+import { Link, useLocation } from 'react-router-dom';
 
 import { Icon } from '@/app/Icon';
-import { Toast } from '@/features/auth/components/Toast';
+import { Toast } from '@/app/Toast';
 import { ImApiError } from '@/lib/api/client';
 import { submitTenantEntryFeedback, uploadPublicFile } from '@/lib/api/tenant';
 
@@ -14,6 +14,7 @@ interface PendingImage {
 
 /** README §10.6 / `01/1j`'s 问题反馈, reached from the tenant-code screen's "遇到问题？" link. */
 export function TenantFeedbackPage() {
+  const tenantCodeHint = (useLocation().state as { tenantCodeHint?: string } | null)?.tenantCodeHint || undefined;
   const [description, setDescription] = useState('');
   const [contact, setContact] = useState('');
   const [images, setImages] = useState<PendingImage[]>([]);
@@ -45,7 +46,12 @@ export function TenantFeedbackPage() {
       for (const item of images) {
         screenshotFileIds.push((await uploadPublicFile(item.file, 'tenant_entry_feedback')).file_id);
       }
-      await submitTenantEntryFeedback({ description: description.trim(), screenshot_file_ids: screenshotFileIds, contact: contact.trim() || undefined });
+      await submitTenantEntryFeedback({
+        description: description.trim(),
+        tenant_code_hint: tenantCodeHint,
+        screenshot_file_ids: screenshotFileIds,
+        contact: contact.trim() || undefined,
+      });
       setToast('提交成功，我们会尽快联系你');
       images.forEach((item) => URL.revokeObjectURL(item.url));
       setDescription('');

web/src/features/auth/components/VerificationCodeButton.tsx

@@ -23,6 +23,14 @@ export function VerificationCodeButton({ phone, scene, onChallenge, onError }: V
   // reaches 0 -- a real resource leak, not just a React warning, since nothing else ever clears it.
   useEffect(() => () => window.clearInterval(timerRef.current), []);
 
+  // A countdown started for one phone number must not block sending a code to a DIFFERENT one --
+  // otherwise correcting a mistyped number mid-cooldown leaves the button stuck disabled (still
+  // counting down for the old number) until the old timer happens to run out on its own.
+  useEffect(() => {
+    window.clearInterval(timerRef.current);
+    setSeconds(0);
+  }, [phone]);
+
   const tick = (initial: number) => {
     window.clearInterval(timerRef.current);
     setSeconds(initial);

web/src/features/messages/AttachmentPreview.tsx

@@ -60,7 +60,7 @@ export function FileAttachment({ data }: { data: FileData }) {
           {typeof data.size === 'number' ? formatFileSize(data.size) : ''} · {remote.loading ? '加载中…' : '点击下载'}
         </span>
       </span>
-      <Icon name="download" className="ml-auto flex-none text-[20px] text-text-placeholder-1" />
+      <Icon name="download" className="ml-auto flex-none text-[20px] text-text-placeholder-2" />
     </a>
   );
 }

web/src/features/messages/ChatListColumn.tsx

@@ -25,7 +25,7 @@ const PINNED_ENTRIES = [
     label: '系统消息',
     icon: 'notifications',
     route: '/chat/system',
-    colorClass: 'bg-warn',
+    colorClass: 'bg-warn-bg text-warn',
   },
   {
     key: 'file_assistant' as const,
@@ -33,7 +33,7 @@ const PINNED_ENTRIES = [
     label: '文件助手',
     icon: 'folder',
     route: '/files',
-    colorClass: 'bg-success',
+    colorClass: 'bg-success-bg text-success',
   },
 ];
 
@@ -75,7 +75,7 @@ export function ChatListColumn() {
               to={entry.route}
               className="grid min-h-[68px] grid-cols-[44px_minmax(0,1fr)_auto] items-center gap-3 border-b border-list-item bg-white px-4 py-2.5 no-underline hover:bg-[#f6f8fb]"
             >
-              <span className={`grid h-11 w-11 place-items-center rounded-lg text-white ${entry.colorClass}`}>
+              <span className={`grid h-11 w-11 place-items-center rounded-lg ${entry.colorClass}`}>
                 <Icon name={entry.icon} className="text-[22px]" />
               </span>
               <span className="flex min-w-0 flex-col gap-1">

web/src/features/messages/ConversationView.tsx

@@ -5,16 +5,17 @@ import type { StoredMessage } from 'tinode-sdk';
 import { Drafty } from 'tinode-sdk';
 
 import { Icon } from '@/app/Icon';
+import { Toast } from '@/app/Toast';
 import { EmojiPanel } from '@/features/messages/EmojiPanel';
 import { ForwardPickerModal } from '@/features/messages/ForwardPickerModal';
 import { MessageContextMenu } from '@/features/messages/MessageContextMenu';
 import { MessageRow } from '@/features/messages/MessageBubble';
 import { VoiceRecorder } from '@/features/messages/VoiceRecorder';
 import { useBootstrap } from '@/lib/api/hooks';
-import { favoriteMessages, recallMessage } from '@/lib/api/messages';
+import { favoriteMessages, type MediaType, recallMessage } from '@/lib/api/messages';
 import { avatarBgClass, avatarLetter } from '@/lib/avatar';
 import { FETCH_PAGE_TRIGGER, MESSAGES_PAGE } from '@/lib/config';
-import { availableActions, type MessageAction } from '@/lib/messages/actions';
+import { availableActions, recallRemainingSeconds, type MessageAction } from '@/lib/messages/actions';
 import { renderDrafty } from '@/lib/messages/drafty';
 import { sendFile, sendImage, sendVoice } from '@/lib/tinode/attachments';
 import { useChatList, useTinode, useTopicMessages } from '@/lib/tinode/hooks';
@@ -30,6 +31,9 @@ interface OutletCtx {
    *  960-1279px regardless of the drawer's real state, always grey at >=1280px despite the panel
    *  being permanently open there) rather than this actual state. */
   detailVisible: boolean;
+  /** Opens the shared history-search modal (owned by MessagesLayout, the closest common ancestor of
+   *  this view and DetailColumn, which can also open it from its own "查找聊天记录" row). */
+  onOpenHistory: (tab: 'text' | MediaType) => void;
 }
 
 interface ContextMenuState {
@@ -40,7 +44,7 @@ interface ContextMenuState {
 
 export function ConversationView() {
   const { topicId } = useParams();
-  const { onToggleDetail, detailVisible } = useOutletContext<OutletCtx>();
+  const { onToggleDetail, detailVisible, onOpenHistory } = useOutletContext<OutletCtx>();
   const myUserId = useSessionStore((s) => s.myUserId);
   const tinode = useTinode();
   const contacts = useChatList();
@@ -65,13 +69,26 @@ export function ConversationView() {
   const [replyTo, setReplyTo] = useState<StoredMessage | null>(null);
   const [forwardMsg, setForwardMsg] = useState<StoredMessage | null>(null);
   const [emojiOpen, setEmojiOpen] = useState(false);
+  const [errorToast, setErrorToast] = useState('');
   const streamRef = useRef<HTMLDivElement>(null);
   const autoScrollRef = useRef(true);
+  const topicIdRef = useRef(topicId);
+  useEffect(() => {
+    topicIdRef.current = topicId;
+  });
+
+  // Every "fire and forget" send/recall/favorite/forward action below used to swallow its own
+  // failure with an empty `.catch(() => {})` (or, for forward, no catch at all) -- e.g. an
+  // over-size-limit attachment would throw a friendly Chinese error from uploadFile() that then
+  // just vanished, leaving the user staring at nothing happening with no idea why.
+  const showError = (err: unknown, fallback: string) => setErrorToast(err instanceof Error ? err.message : fallback);
 
   useEffect(() => {
     if (!topicId) return undefined;
     openConversation(topicId).catch(() => {});
-    return () => closeConversation(topicId);
+    return () => {
+      closeConversation(topicId).catch(() => {});
+    };
   }, [topicId]);
 
   useEffect(() => {
@@ -87,13 +104,22 @@ export function ConversationView() {
     // onSend callback (re-created every render off the CURRENT topicId) would publish the eventual
     // recording into B instead of the conversation the user was actually recording in.
     setRecording(false);
+    // Without these two, a "加载更多" in flight when the user switches conversations leaves a
+    // stale spinner showing (never resolves against the topic it started on) and, if the PREVIOUS
+    // conversation had been scrolled up when it was left, the ref carries that `false` into the
+    // NEW conversation and silently skips scrolling it to the bottom on open.
+    setLoadingOlder(false);
+    autoScrollRef.current = true;
   }, [topicId]);
 
   useEffect(() => {
     if (autoScrollRef.current) {
       streamRef.current?.scrollTo({ top: streamRef.current.scrollHeight });
     }
-  }, [messages.length]);
+    // `topicId` is included so switching between two conversations that both happen to have
+    // already loaded the same number of messages (e.g. both exactly MESSAGES_PAGE on first open)
+    // still scrolls the newly-opened one to the bottom -- `messages.length` alone wouldn't change.
+  }, [messages.length, topicId]);
 
   useEffect(() => {
     if (!topicId || messages.length === 0) return;
@@ -113,6 +139,7 @@ export function ConversationView() {
    */
   const loadOlder = async () => {
     if (loadingOlder) return;
+    const calledForTopicId = topicId;
     const el = streamRef.current;
     const min = topic.minMsgSeq();
     const max = topic.maxMsgSeq();
@@ -124,10 +151,17 @@ export function ConversationView() {
     try {
       await topic.getMessagesPage(MESSAGES_PAGE, gaps, min, max);
     } finally {
-      setLoadingOlder(false);
-      requestAnimationFrame(() => {
-        if (el) el.scrollTop = prevTop + (el.scrollHeight - prevHeight);
-      });
+      // If the user switched to a different conversation while this was in flight, `el` is now
+      // showing that OTHER topic's messages -- prevTop/prevHeight were measured against content
+      // that isn't there anymore, so applying them would jump the NEW conversation's scroll
+      // position to a meaningless spot. Only the topic that actually asked for more history should
+      // ever clear its own loading flag or touch the scroll position.
+      if (topicIdRef.current === calledForTopicId) {
+        setLoadingOlder(false);
+        requestAnimationFrame(() => {
+          if (el) el.scrollTop = prevTop + (el.scrollHeight - prevHeight);
+        });
+      }
     }
   };
 
@@ -186,7 +220,7 @@ export function ConversationView() {
 
   const bulkFavorite = () => {
     if (selectedSeqs.size === 0) return;
-    favoriteMessages([...selectedSeqs].map((seq) => ({ topic: topicId, seq }))).catch(() => {});
+    favoriteMessages([...selectedSeqs].map((seq) => ({ topic: topicId, seq }))).catch((err) => showError(err, '收藏失败'));
     exitSelectMode();
   };
 
@@ -194,7 +228,7 @@ export function ConversationView() {
     const target = tinode.getTopic(targetTopic);
     for (const seq of selectedSeqs) {
       const msg = topic.findMessage(seq);
-      if (msg) forwardMessage(topicId, msg, target);
+      if (msg) forwardMessage(topicId, msg, target).catch((err) => showError(err, '转发失败'));
     }
     setBulkForwardOpen(false);
     exitSelectMode();
@@ -211,7 +245,7 @@ export function ConversationView() {
       case 'recall':
         recallMessage(topicId, msg.seq)
           .then(() => topic.delMessagesList([msg.seq], true))
-          .catch(() => {});
+          .catch((err) => showError(err, '撤回失败'));
         break;
       case 'delete':
         topic.delMessagesList([msg.seq], false);
@@ -224,7 +258,7 @@ export function ConversationView() {
         setReplyTo(msg);
         break;
       case 'favorite':
-        favoriteMessages([{ topic: topicId, seq: msg.seq }]).catch(() => {});
+        favoriteMessages([{ topic: topicId, seq: msg.seq }]).catch((err) => showError(err, '收藏失败'));
         break;
       case 'forward':
         setForwardMsg(msg);
@@ -235,13 +269,13 @@ export function ConversationView() {
   const handlePickImage = (e: React.ChangeEvent<HTMLInputElement>) => {
     const file = e.target.files?.[0];
     e.target.value = '';
-    if (file) sendImage(topic, file).catch(() => {});
+    if (file) sendImage(topic, file).catch((err) => showError(err, '图片发送失败'));
   };
 
   const handlePickFile = (e: React.ChangeEvent<HTMLInputElement>) => {
     const file = e.target.files?.[0];
     e.target.value = '';
-    if (file) sendFile(topic, file).catch(() => {});
+    if (file) sendFile(topic, file).catch((err) => showError(err, '文件发送失败'));
   };
 
   return (
@@ -279,7 +313,11 @@ export function ConversationView() {
               <button type="button" className="grid h-9.5 w-9.5 place-items-center rounded-lg text-text-tertiary-1">
                 <Icon name="videocam" />
               </button>
-              <button type="button" className="grid h-9.5 w-9.5 place-items-center rounded-lg text-text-tertiary-1">
+              <button
+                type="button"
+                onClick={() => onOpenHistory('text')}
+                className="grid h-9.5 w-9.5 place-items-center rounded-lg text-text-tertiary-1"
+              >
                 <Icon name="search" />
               </button>
               <button
@@ -304,7 +342,6 @@ export function ConversationView() {
             mine={!!myUserId && msg.from === myUserId}
             isGroup={isGroup}
             peerName={peerName}
-            myUserId={myUserId}
             selectMode={selectMode}
             selected={typeof msg.seq === 'number' && selectedSeqs.has(msg.seq)}
             menuActive={typeof msg.seq === 'number' && menu?.msg.seq === msg.seq}
@@ -392,7 +429,7 @@ export function ConversationView() {
               onCancel={() => setRecording(false)}
               onSend={(blob, durationMs) => {
                 setRecording(false);
-                sendVoice(topic, blob, durationMs).catch(() => {});
+                sendVoice(topic, blob, durationMs).catch((err) => showError(err, '语音发送失败'));
               }}
             />
           ) : (
@@ -424,6 +461,7 @@ export function ConversationView() {
           x={menu.x}
           y={menu.y}
           actions={availableActions(menu.msg, myUserId, bootstrap.data?.message_policy)}
+          recallRemainingSeconds={recallRemainingSeconds(menu.msg, myUserId, bootstrap.data?.message_policy)}
           onAction={handleAction}
           onClose={() => setMenu(null)}
         />
@@ -433,13 +471,15 @@ export function ConversationView() {
         <ForwardPickerModal
           onClose={() => setForwardMsg(null)}
           onPick={(targetTopic) => {
-            forwardMessage(topicId, forwardMsg, tinode.getTopic(targetTopic));
+            forwardMessage(topicId, forwardMsg, tinode.getTopic(targetTopic)).catch((err) => showError(err, '转发失败'));
             setForwardMsg(null);
           }}
         />
       ) : null}
 
       {bulkForwardOpen ? <ForwardPickerModal onClose={() => setBulkForwardOpen(false)} onPick={bulkForward} /> : null}
+
+      <Toast message={errorToast} variant="error" onDone={() => setErrorToast('')} />
     </div>
   );
 }

web/src/features/messages/DetailColumn.tsx

@@ -1,10 +1,11 @@
-import { useState } from 'react';
+import { useEffect, useState } from 'react';
 
 import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query';
 import { useNavigate } from 'react-router-dom';
 
 import { Icon } from '@/app/Icon';
-import { HistorySearchModal } from '@/features/messages/HistorySearchModal';
+import { Toast } from '@/app/Toast';
+import { fetchAllPages } from '@/lib/api/client';
 import {
   blockUser,
   deleteFriend,
@@ -24,6 +25,7 @@ interface DetailColumnProps {
   topicId: string;
   peerName: string;
   onClose?: () => void;
+  onOpenHistory: (tab: 'text' | MediaType) => void;
 }
 
 function Toggle({ checked, onChange, disabled }: { checked: boolean; onChange: () => void; disabled?: boolean }) {
@@ -43,16 +45,25 @@ function Toggle({ checked, onChange, disabled }: { checked: boolean; onChange: (
   );
 }
 
-export function DetailColumn({ topicId, peerName, onClose }: DetailColumnProps) {
+export function DetailColumn({ topicId, peerName, onClose, onOpenHistory }: DetailColumnProps) {
   const navigate = useNavigate();
   const tinode = useTinode();
   const queryClient = useQueryClient();
   const [remarkEditing, setRemarkEditing] = useState(false);
   const [remarkDraft, setRemarkDraft] = useState('');
-  const [historyTab, setHistoryTab] = useState<'text' | MediaType | null>(null);
+  const [errorToast, setErrorToast] = useState('');
+  const showError = (err: unknown, fallback: string) => setErrorToast(err instanceof Error ? err.message : fallback);
 
-  const friendsQuery = useQuery({ queryKey: ['friends'], queryFn: () => getFriends() });
-  const friend = friendsQuery.data?.items.find((f) => f.user_id === topicId);
+  // DetailColumn is reused across every contact when docked (no `key={topicId}`, same instance),
+  // so without this an in-progress remark edit for the PREVIOUS contact stays open and could be
+  // saved against the NEW one.
+  useEffect(() => {
+    setRemarkEditing(false);
+    setRemarkDraft('');
+  }, [topicId]);
+
+  const friendsQuery = useQuery({ queryKey: ['friends'], queryFn: () => fetchAllPages((cursor) => getFriends('', cursor)) });
+  const friend = friendsQuery.data?.find((f) => f.user_id === topicId);
 
   const profileQuery = useQuery({ queryKey: ['user-profile', topicId], queryFn: () => getUserProfile(topicId) });
   const idLine = [profileQuery.data?.public_account && `ID：${profileQuery.data.public_account}`, profileQuery.data?.region]
@@ -68,6 +79,7 @@ export function DetailColumn({ topicId, peerName, onClose }: DetailColumnProps)
     mutationFn: (patch: { pinned?: boolean; mute_notifications?: boolean }) =>
       updateConversationSettings(topicId, { ...patch, version: settingsQuery.data?.version ?? 0 }),
     onSuccess: (data) => queryClient.setQueryData(['conversation-settings', topicId], data),
+    onError: (err) => showError(err, '设置失败，请重试'),
   });
 
   const remarkMutation = useMutation({
@@ -76,15 +88,17 @@ export function DetailColumn({ topicId, peerName, onClose }: DetailColumnProps)
       queryClient.invalidateQueries({ queryKey: ['friends'] });
       setRemarkEditing(false);
     },
+    onError: (err) => showError(err, '备注保存失败'),
   });
 
   const blockMutation = useMutation({
     mutationFn: (blocked: boolean) => (blocked ? blockUser(topicId) : unblockUser(topicId)),
     onSuccess: () => queryClient.invalidateQueries({ queryKey: ['blocks'] }),
+    onError: (err) => showError(err, '设置失败，请重试'),
   });
 
-  const blocksQuery = useQuery({ queryKey: ['blocks'], queryFn: () => getBlocks() });
-  const isBlocked = !!blocksQuery.data?.items.some((b) => b.user_id === topicId);
+  const blocksQuery = useQuery({ queryKey: ['blocks'], queryFn: () => fetchAllPages((cursor) => getBlocks(cursor)) });
+  const isBlocked = !!blocksQuery.data?.some((b) => b.user_id === topicId);
 
   const deleteFriendMutation = useMutation({
     mutationFn: () => deleteFriend(topicId),
@@ -92,6 +106,7 @@ export function DetailColumn({ topicId, peerName, onClose }: DetailColumnProps)
       queryClient.invalidateQueries({ queryKey: ['friends'] });
       navigate('/messages');
     },
+    onError: (err) => showError(err, '删除好友失败'),
   });
 
   const clearHistory = () => {
@@ -149,7 +164,7 @@ export function DetailColumn({ topicId, peerName, onClose }: DetailColumnProps)
       </div>
 
       <div className="border-b border-list-item px-5 pb-3 pt-2 text-sm">
-        <button type="button" onClick={() => setHistoryTab('text')} className="flex w-full items-center justify-between py-2">
+        <button type="button" onClick={() => onOpenHistory('text')} className="flex w-full items-center justify-between py-2">
           <span className="text-text-body">查找聊天记录</span>
           <Icon name="chevron_right" className="text-[20px] text-icon-arrow" />
         </button>
@@ -162,7 +177,7 @@ export function DetailColumn({ topicId, peerName, onClose }: DetailColumnProps)
               { type: 'link' as const, label: '链接', icon: 'link' },
             ] satisfies { type: MediaType; label: string; icon: string }[]
           ).map((item) => (
-            <button key={item.type} type="button" onClick={() => setHistoryTab(item.type)} className="flex flex-col items-center gap-1 py-1">
+            <button key={item.type} type="button" onClick={() => onOpenHistory(item.type)} className="flex flex-col items-center gap-1 py-1">
               <Icon name={item.icon} className="text-[22px] text-text-tertiary-4" />
               <span className="text-xs text-text-secondary">{item.label}</span>
             </button>
@@ -242,7 +257,7 @@ export function DetailColumn({ topicId, peerName, onClose }: DetailColumnProps)
         删除好友
       </button>
 
-      {historyTab ? <HistorySearchModal topicId={topicId} initialTab={historyTab} onClose={() => setHistoryTab(null)} /> : null}
+      <Toast message={errorToast} variant="error" onDone={() => setErrorToast('')} />
     </aside>
   );
 }

web/src/features/messages/EmojiPanel.tsx

@@ -31,7 +31,7 @@ interface EmojiPanelProps {
 }
 
 export function EmojiPanel({ onPick }: EmojiPanelProps) {
-  const [tab, setTab] = useState<EmojiTab>('faces');
+  const [tab, setTab] = useState<EmojiTab>('recent');
   const recent = (() => {
     try {
       return JSON.parse(localStorage.getItem('im-recent-emoji') || '[]') as string[];

web/src/features/messages/ForwardPickerModal.tsx

@@ -2,6 +2,7 @@ import { useState } from 'react';
 
 import { Icon } from '@/app/Icon';
 import { avatarBgClass, avatarLetter } from '@/lib/avatar';
+import { useEscapeKey } from '@/lib/hooks';
 import { useChatList } from '@/lib/tinode/hooks';
 
 interface ForwardPickerModalProps {
@@ -17,6 +18,7 @@ interface ForwardPickerModalProps {
 export function ForwardPickerModal({ onPick, onClose }: ForwardPickerModalProps) {
   const contacts = useChatList();
   const [query, setQuery] = useState('');
+  useEscapeKey(onClose);
   const filtered = contacts.filter((c) => !query.trim() || (c.public?.fn || '').includes(query.trim()));
 
   return (

web/src/features/messages/HistorySearchModal.tsx

@@ -1,11 +1,11 @@
 import { useState } from 'react';
 
-import { useMutation, useQuery } from '@tanstack/react-query';
+import { useInfiniteQuery, useMutation } from '@tanstack/react-query';
 
 import { Icon } from '@/app/Icon';
 import { getTopicMedia, searchTopicMessages, type MediaFetchType, type MediaItem, type MediaType, type SearchHit } from '@/lib/api/messages';
 import { checkUrlSafety } from '@/lib/api/security';
-import { useAuthedBlobUrl, useDebouncedValue } from '@/lib/hooks';
+import { useAuthedBlobUrl, useDebouncedValue, useEscapeKey } from '@/lib/hooks';
 import { renderDrafty } from '@/lib/messages/drafty';
 import { formatEventTimestamp } from '@/lib/messages/time';
 
@@ -119,6 +119,14 @@ function LinkResult({ item }: { item: SearchHit & { url?: string; title?: string
   );
 }
 
+function LoadMoreButton({ onClick, loading }: { onClick: () => void; loading: boolean }) {
+  return (
+    <button type="button" onClick={onClick} disabled={loading} className="py-3 text-center text-sm text-accent disabled:opacity-60">
+      {loading ? '加载中…' : '加载更多'}
+    </button>
+  );
+}
+
 interface HistorySearchModalProps {
   topicId: string;
   initialTab?: Tab;
@@ -130,24 +138,34 @@ export function HistorySearchModal({ topicId, initialTab = 'text', onClose }: Hi
   const [tab, setTab] = useState<Tab>(initialTab);
   const [query, setQuery] = useState('');
   const debouncedQuery = useDebouncedValue(query, 300);
+  useEscapeKey(onClose);
 
-  const searchQuery = useQuery({
+  const searchQuery = useInfiniteQuery({
     queryKey: ['topic-search', topicId, debouncedQuery],
-    queryFn: () => searchTopicMessages(topicId, debouncedQuery, 'text'),
+    queryFn: ({ pageParam }) => searchTopicMessages(topicId, debouncedQuery, 'text', pageParam),
+    initialPageParam: '',
+    getNextPageParam: (lastPage) => lastPage.next_cursor || undefined,
     enabled: tab === 'text' && debouncedQuery.trim().length > 0,
   });
+  const searchItems = searchQuery.data?.pages.flatMap((p) => p.items) ?? [];
 
-  const mediaQuery = useQuery({
+  const mediaQuery = useInfiniteQuery({
     queryKey: ['topic-media', topicId, tab],
-    queryFn: () => getTopicMedia(topicId, tab as MediaFetchType),
+    queryFn: ({ pageParam }) => getTopicMedia(topicId, tab as MediaFetchType, pageParam),
+    initialPageParam: '',
+    getNextPageParam: (lastPage) => lastPage.next_cursor || undefined,
     enabled: tab === 'image' || tab === 'video',
   });
+  const mediaItems = mediaQuery.data?.pages.flatMap((p) => p.items) ?? [];
 
-  const fileLinkQuery = useQuery({
+  const fileLinkQuery = useInfiniteQuery({
     queryKey: ['topic-search-media', topicId, tab],
-    queryFn: () => searchTopicMessages(topicId, '', tab as 'file' | 'link'),
+    queryFn: ({ pageParam }) => searchTopicMessages(topicId, '', tab as 'file' | 'link', pageParam),
+    initialPageParam: '',
+    getNextPageParam: (lastPage) => lastPage.next_cursor || undefined,
     enabled: tab === 'file' || tab === 'link',
   });
+  const fileLinkItems = fileLinkQuery.data?.pages.flatMap((p) => p.items) ?? [];
 
   return (
     <div className="fixed inset-0 z-50 flex items-center justify-center bg-[#22262d]/25" onClick={onClose}>
@@ -190,25 +208,30 @@ export function HistorySearchModal({ topicId, initialTab = 'text', onClose }: Hi
               </div>
             </div>
             <div className="flex-1 overflow-y-auto px-5 pb-4">
-              {!query.trim() ? (
+              {!debouncedQuery.trim() ? (
                 <div className="py-10 text-center text-sm text-text-tertiary-4">输入关键词搜索这个会话的聊天记录</div>
               ) : searchQuery.isLoading ? (
                 <div className="py-10 text-center text-sm text-text-tertiary-4">搜索中…</div>
-              ) : !searchQuery.data?.items.length ? (
+              ) : !searchItems.length ? (
                 <div className="py-10 text-center text-sm text-text-tertiary-4">没有找到相关消息</div>
               ) : (
-                <ul className="flex flex-col gap-1">
-                  {searchQuery.data.items.map((item) => (
-                    <li key={item.seq} className="rounded-lg px-3 py-2.5 hover:bg-surface-rail">
-                      <div className="flex items-center justify-between text-xs text-text-tertiary-3">
-                        <span>{formatEventTimestamp(new Date(item.ts))}</span>
-                      </div>
-                      <div className="mt-0.5 truncate">
-                        <SnapshotContent item={item} />
-                      </div>
-                    </li>
-                  ))}
-                </ul>
+                <>
+                  <ul className="flex flex-col gap-1">
+                    {searchItems.map((item) => (
+                      <li key={item.seq} className="rounded-lg px-3 py-2.5 hover:bg-surface-rail">
+                        <div className="flex items-center justify-between text-xs text-text-tertiary-3">
+                          <span>{formatEventTimestamp(new Date(item.ts))}</span>
+                        </div>
+                        <div className="mt-0.5 truncate">
+                          <SnapshotContent item={item} />
+                        </div>
+                      </li>
+                    ))}
+                  </ul>
+                  {searchQuery.hasNextPage ? (
+                    <LoadMoreButton onClick={() => searchQuery.fetchNextPage()} loading={searchQuery.isFetchingNextPage} />
+                  ) : null}
+                </>
               )}
             </div>
           </div>
@@ -216,28 +239,38 @@ export function HistorySearchModal({ topicId, initialTab = 'text', onClose }: Hi
           <div className="flex-1 overflow-y-auto p-5">
             {mediaQuery.isLoading ? (
               <div className="py-10 text-center text-sm text-text-tertiary-4">加载中…</div>
-            ) : !mediaQuery.data?.items.length ? (
+            ) : !mediaItems.length ? (
               <div className="py-10 text-center text-sm text-text-tertiary-4">暂无内容</div>
             ) : (
-              <div className="grid grid-cols-4 gap-0.5 overflow-hidden rounded-lg">
-                {mediaQuery.data.items.map((item) => (
-                  <MediaThumb key={item.seq} item={item} isVideo={tab === 'video'} />
-                ))}
-              </div>
+              <>
+                <div className="grid grid-cols-4 gap-0.5 overflow-hidden rounded-lg">
+                  {mediaItems.map((item) => (
+                    <MediaThumb key={item.seq} item={item} isVideo={tab === 'video'} />
+                  ))}
+                </div>
+                {mediaQuery.hasNextPage ? (
+                  <LoadMoreButton onClick={() => mediaQuery.fetchNextPage()} loading={mediaQuery.isFetchingNextPage} />
+                ) : null}
+              </>
             )}
           </div>
         ) : (
           <div className="flex-1 overflow-y-auto p-5">
             {fileLinkQuery.isLoading ? (
               <div className="py-10 text-center text-sm text-text-tertiary-4">加载中…</div>
-            ) : !fileLinkQuery.data?.items.length ? (
+            ) : !fileLinkItems.length ? (
               <div className="py-10 text-center text-sm text-text-tertiary-4">暂无内容</div>
             ) : (
-              <div className="flex flex-col gap-2">
-                {fileLinkQuery.data.items.map((item) =>
-                  tab === 'link' ? <LinkResult key={item.seq} item={item} /> : <SnapshotContent key={item.seq} item={item} />,
-                )}
-              </div>
+              <>
+                <div className="flex flex-col gap-2">
+                  {fileLinkItems.map((item) =>
+                    tab === 'link' ? <LinkResult key={item.seq} item={item} /> : <SnapshotContent key={item.seq} item={item} />,
+                  )}
+                </div>
+                {fileLinkQuery.hasNextPage ? (
+                  <LoadMoreButton onClick={() => fileLinkQuery.fetchNextPage()} loading={fileLinkQuery.isFetchingNextPage} />
+                ) : null}
+              </>
             )}
           </div>
         )}

web/src/features/messages/MessageBubble.tsx

@@ -14,7 +14,6 @@ interface MessageRowProps {
   mine: boolean;
   isGroup: boolean;
   peerName: string;
-  myUserId: string | null;
   selectMode?: boolean;
   selected?: boolean;
   /** README §3.5: "选中气泡加 outline:2px solid #1677ff" -- true while this message is the open
@@ -30,7 +29,6 @@ export function MessageRow({
   mine,
   isGroup,
   peerName,
-  myUserId,
   selectMode,
   selected,
   menuActive,
@@ -81,7 +79,9 @@ export function MessageRow({
         className={`flex flex-1 items-end gap-2.5 ${mine ? 'flex-row-reverse' : ''}`}
       >
         <span
-          className={`grid h-9 w-9 flex-none place-items-center rounded-lg text-sm font-medium text-white ${avatarBgClass(mine ? myUserId || '' : msg.from || peerName)}`}
+          className={`grid h-9 w-9 flex-none place-items-center rounded-lg text-sm font-medium text-white ${
+            mine ? 'bg-accent' : avatarBgClass(msg.from || peerName)
+          }`}
         >
           {avatarLetter(mine ? '我' : peerName)}
         </span>

web/src/features/messages/MessageContextMenu.tsx

@@ -1,4 +1,4 @@
-import { useEffect } from 'react';
+import { useEffect, useLayoutEffect, useRef, useState } from 'react';
 
 import { Icon } from '@/app/Icon';
 import type { MessageAction } from '@/lib/messages/actions';
@@ -24,28 +24,55 @@ interface MessageContextMenuProps {
   x: number;
   y: number;
   actions: MessageAction[];
+  /** README §3.5: "撤回...右侧灰字剩余时限「1:42 内」" -- only meaningful when `actions` includes 'recall'. */
+  recallRemainingSeconds?: number | null;
   onAction: (action: MessageAction) => void;
   onClose: () => void;
 }
 
+function formatRecallCountdown(seconds: number): string {
+  return `${Math.floor(seconds / 60)}:${String(seconds % 60).padStart(2, '0')} 内`;
+}
+
 /** README §3.5: 180px popup, divider before the destructive-leaning tail (recall/delete). */
-export function MessageContextMenu({ x, y, actions, onAction, onClose }: MessageContextMenuProps) {
+export function MessageContextMenu({ x, y, actions, recallRemainingSeconds, onAction, onClose }: MessageContextMenuProps) {
+  const ref = useRef<HTMLDivElement>(null);
+  const [pos, setPos] = useState({ left: x, top: y });
+
   useEffect(() => {
-    const handler = () => onClose();
+    const handler = (e: KeyboardEvent | MouseEvent | Event) => {
+      if (e instanceof KeyboardEvent && e.key !== 'Escape') return;
+      onClose();
+    };
     window.addEventListener('click', handler);
     window.addEventListener('scroll', handler, true);
+    window.addEventListener('keydown', handler);
     return () => {
       window.removeEventListener('click', handler);
       window.removeEventListener('scroll', handler, true);
+      window.removeEventListener('keydown', handler);
     };
   }, [onClose]);
 
+  // Right-clicking near the window's right/bottom edge would otherwise render this partially
+  // off-screen -- clamp against the menu's actual measured size once it's in the DOM.
+  useLayoutEffect(() => {
+    const el = ref.current;
+    if (!el) return;
+    const rect = el.getBoundingClientRect();
+    const left = Math.min(x, window.innerWidth - rect.width - 8);
+    const top = Math.min(y, window.innerHeight - rect.height - 8);
+    setPos({ left: Math.max(8, left), top: Math.max(8, top) });
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [x, y]);
+
   const leading = actions.filter((a) => a !== 'recall' && a !== 'delete');
   const trailing = actions.filter((a) => a === 'recall' || a === 'delete');
 
   return (
     <div
-      style={{ left: x, top: y }}
+      ref={ref}
+      style={pos}
       className="fixed z-50 w-[180px] rounded-[10px] border border-border-panel bg-white p-1.5 shadow-menu"
       onClick={(e) => e.stopPropagation()}
     >
@@ -77,6 +104,9 @@ export function MessageContextMenu({ x, y, actions, onAction, onClose }: Message
           >
             <Icon name={item.icon} className="text-[18px]" />
             {item.label}
+            {action === 'recall' && typeof recallRemainingSeconds === 'number' ? (
+              <span className="ml-auto text-xs text-text-tertiary-3">{formatRecallCountdown(recallRemainingSeconds)}</span>
+            ) : null}
           </button>
         );
       })}

web/src/features/messages/MessagesLayout.tsx

@@ -1,10 +1,12 @@
-import { useState } from 'react';
+import { useEffect, useState } from 'react';
 
 import { Outlet, useParams } from 'react-router-dom';
 
 import { ChatListColumn } from '@/features/messages/ChatListColumn';
 import { DetailColumn } from '@/features/messages/DetailColumn';
+import { HistorySearchModal } from '@/features/messages/HistorySearchModal';
 import { OfflineBanner } from '@/features/messages/OfflineBanner';
+import type { MediaType } from '@/lib/api/messages';
 import { useMediaQuery } from '@/lib/hooks';
 import { useChatList } from '@/lib/tinode/hooks';
 
@@ -22,6 +24,7 @@ import { useChatList } from '@/lib/tinode/hooks';
 export function MessagesLayout() {
   const { topicId } = useParams();
   const [detailOpen, setDetailOpen] = useState(false);
+  const [historyTab, setHistoryTab] = useState<'text' | MediaType | null>(null);
   const isDocked = useMediaQuery('(min-width: 1280px)');
   const showListOnNarrow = !topicId;
   const contacts = useChatList();
@@ -31,6 +34,11 @@ export function MessagesLayout() {
   // toggle state is. Previously hardcoded to the breakpoint itself instead of this real state.
   const detailVisible = isDocked || detailOpen;
 
+  // MessagesLayout is one long-lived instance reused across every conversation (route is
+  // `:topicId`) -- a history-search modal left open while switching topics would otherwise keep
+  // showing results for whichever topic it was opened against, not the one now on screen.
+  useEffect(() => setHistoryTab(null), [topicId]);
+
   return (
     <div className="relative flex h-full w-full">
       <div className="relative flex h-full min-w-0 flex-1">
@@ -41,27 +49,28 @@ export function MessagesLayout() {
           <ChatListColumn />
         </div>
         <div className={`h-full min-w-0 flex-1 ${showListOnNarrow ? 'hidden md:block' : ''}`}>
-          <Outlet context={{ onToggleDetail: () => setDetailOpen((v) => !v), detailVisible }} />
+          <Outlet context={{ onToggleDetail: () => setDetailOpen((v) => !v), detailVisible, onOpenHistory: setHistoryTab }} />
         </div>
       </div>
       {topicId ? (
         <div className="hidden h-full lg:block">
-          <DetailColumn topicId={topicId} peerName={peerName} />
+          <DetailColumn topicId={topicId} peerName={peerName} onOpenHistory={setHistoryTab} />
         </div>
       ) : null}
       {detailOpen && topicId ? (
         <div className="absolute inset-0 hidden md:block lg:hidden">
           <div className="absolute inset-0 bg-[#22262d]/25" onClick={() => setDetailOpen(false)} />
           <div className="absolute inset-y-0 right-0 shadow-[-8px_0_32px_rgba(0,0,0,0.12)]">
-            <DetailColumn topicId={topicId} peerName={peerName} onClose={() => setDetailOpen(false)} />
+            <DetailColumn topicId={topicId} peerName={peerName} onClose={() => setDetailOpen(false)} onOpenHistory={setHistoryTab} />
           </div>
         </div>
       ) : null}
       {detailOpen && topicId ? (
         <div className="fixed inset-0 z-30 bg-white md:hidden">
-          <DetailColumn topicId={topicId} peerName={peerName} onClose={() => setDetailOpen(false)} />
+          <DetailColumn topicId={topicId} peerName={peerName} onClose={() => setDetailOpen(false)} onOpenHistory={setHistoryTab} />
         </div>
       ) : null}
+      {historyTab && topicId ? <HistorySearchModal topicId={topicId} initialTab={historyTab} onClose={() => setHistoryTab(null)} /> : null}
     </div>
   );
 }

web/src/index.css

@@ -106,7 +106,7 @@
   --shadow-modal: 0 20px 60px rgba(0, 0, 0, 0.18);
   --shadow-menu: 0 12px 36px rgba(0, 0, 0, 0.16);
   --shadow-bubble: 0 1px 2px rgba(0, 0, 0, 0.06);
-  --shadow-btn: 0 4px 12px rgba(54, 139, 250, 0.2);
+  --shadow-btn: 0 6px 16px rgba(54, 139, 250, 0.2);
   --shadow-focus-ring: 0 0 0 3px rgba(22, 119, 255, 0.1);
 }