fix: 聊天页面适配暗黑模式

将 scoped CSS 硬编码颜色全部替换为 Tailwind 语义类：
- 背景色: bg-card, bg-muted, bg-accent, bg-primary
- 文字色: text-foreground, text-muted-foreground, text-primary-foreground
- 边框色: border-border
- 选中态: bg-primary/10 dark:bg-accent

apps/web-antd/src/views/im/index.vue

@@ -26,7 +26,7 @@ const activeMessages = computed(() => imStore.activeMessages);
 const sortedConversations = computed(() =>
   [...imStore.conversations].toSorted((a, b) => {
     const timeA = a.lastMessageAt ? new Date(a.lastMessageAt).getTime() : 0;
-    const timeB = b.lastMessageAt ? new Date(b.lastMessageAt).getTime() : 0;
+    const timeB = b.lastMessageAt ? new Date(a.lastMessageAt).getTime() : 0;
     return timeB - timeA;
   }),
 );
@@ -57,7 +57,6 @@ async function selectConversation(conversationId: string) {
   await imStore.loadMessages(conversationId);
   await nextTick();
   scrollToBottom();
-  // Mark as read
   const msgs = imStore.activeMessages;
   if (msgs.length > 0) {
     const lastMsg = msgs[msgs.length - 1];
@@ -66,7 +65,7 @@ async function selectConversation(conversationId: string) {
 }
 
 async function handleSend(e?: any) {
-  if (e?.shiftKey) return; // Shift+Enter for newline
+  if (e?.shiftKey) return;
   e?.preventDefault?.();
 
   const content = inputMessage.value.trim();
@@ -135,20 +134,30 @@ onUnmounted(() => {
 </script>
 
 <template>
-  <div class="chat-container">
+  <div
-    <div class="chat-sidebar">
+    class="flex h-[calc(100vh-120px)] overflow-hidden rounded-lg border border-border bg-card"
-      <div class="sidebar-header">
+  >
-        <h3 style=" padding: 16px;margin: 0">消息</h3>
+    <!-- Sidebar -->
+    <div
+      class="flex w-[300px] shrink-0 flex-col border-r border-border"
+    >
+      <div
+        class="flex items-center justify-between border-b border-border px-4 py-3"
+      >
+        <h3 class="m-0 p-0 text-base font-medium text-foreground">消息</h3>
         <a-button type="primary" size="small" @click="showCreateGroup = true">
           创建群聊
         </a-button>
       </div>
-      <div class="conversation-list">
+
+      <div class="flex-1 overflow-y-auto">
         <div
           v-for="conv in sortedConversations"
           :key="conv.id"
-          class="conversation-item"
+          class="flex cursor-pointer items-center px-4 py-3 transition-colors hover:bg-accent"
-          :class="{ active: conv.id === activeConversationId }"
+          :class="{
+            'bg-primary/10 dark:bg-accent': conv.id === activeConversationId,
+          }"
           @click="selectConversation(conv.id)"
         >
           <a-avatar v-if="conv.type === 2" :size="40">
@@ -157,16 +166,22 @@ onUnmounted(() => {
           <a-avatar v-else :size="40">
             {{ conv.otherUserName?.charAt(0) || 'U' }}
           </a-avatar>
-          <div class="conversation-info">
+
-            <div class="conversation-name">
+          <div class="ml-3 flex-1 overflow-hidden">
+            <div
+              class="truncate text-sm font-medium text-foreground"
+            >
               {{
-                conv.type === 2 ? conv.groupName : conv.otherUserName || '私聊'
+                conv.type === 2
+                  ? conv.groupName
+                  : conv.otherUserName || '私聊'
               }}
             </div>
-            <div class="conversation-last-msg">
+            <div class="mt-1 truncate text-xs text-muted-foreground">
               {{ conv.lastMessageContent || '暂无消息' }}
             </div>
           </div>
+
           <a-badge
             v-if="conv.unreadCount > 0"
             :count="conv.unreadCount"
@@ -176,9 +191,12 @@ onUnmounted(() => {
       </div>
     </div>
 
-    <div class="chat-main">
+    <!-- Main chat area -->
+    <div class="flex flex-1 flex-col">
       <template v-if="activeConversation">
-        <div class="chat-header">
+        <div
+          class="flex items-center justify-between border-b border-border px-4 py-3 font-medium text-foreground"
+        >
           <span>
             {{
               activeConversation.type === 2
@@ -195,28 +213,39 @@ onUnmounted(() => {
           </a-button>
         </div>
 
-        <div ref="messageListRef" class="message-list" @scroll="onScroll">
+        <div
+          ref="messageListRef"
+          class="flex-1 overflow-y-auto px-4 py-4"
+          @scroll="onScroll"
+        >
           <div
             v-for="msg in activeMessages"
             :key="msg.id"
-            class="message-item"
+            class="mb-4"
-            :class="{ 'message-self': isSelfMessage(msg) }"
+            :class="{ 'text-right': isSelfMessage(msg) }"
           >
-            <div class="message-sender">
+            <div class="mb-1 text-xs text-muted-foreground">
               {{ msg.senderName || msg.senderId.substring(0, 8) }}
             </div>
-            <div class="message-content">
+            <div
+              class="inline-block max-w-[60%] break-words rounded-lg px-3 py-2"
+              :class="
+                isSelfMessage(msg)
+                  ? 'bg-primary text-primary-foreground'
+                  : 'bg-muted text-foreground'
+              "
+            >
               <template v-if="msg.contentType === 0">
                 {{ msg.content }}
               </template>
               <template v-else-if="msg.contentType === 1">
                 <img
                   :src="msg.metadata?.imageUrl"
-                  style="max-width: 200px; border-radius: 8px"
+                  class="max-w-[200px] rounded-lg"
                 />
               </template>
               <template v-else-if="msg.contentType === 4">
-                <span style="font-size: 24px">{{ msg.content }}</span>
+                <span class="text-2xl">{{ msg.content }}</span>
               </template>
               <template v-else>
                 [{{
@@ -224,11 +253,15 @@ onUnmounted(() => {
                 }}]
               </template>
             </div>
-            <div class="message-time">{{ formatTime(msg.createdAt) }}</div>
+            <div class="mt-1 text-[11px] text-muted-foreground/60">
+              {{ formatTime(msg.createdAt) }}
+            </div>
           </div>
         </div>
 
-        <div class="chat-input">
+        <div
+          class="flex gap-2 border-t border-border px-4 py-3"
+        >
           <a-textarea
             v-model:value="inputMessage"
             placeholder="输入消息..."
@@ -241,7 +274,10 @@ onUnmounted(() => {
         </div>
       </template>
 
-      <div v-else class="chat-empty">
+      <div
+        v-else
+        class="flex flex-1 items-center justify-center text-muted-foreground"
+      >
         <p>选择一个会话开始聊天</p>
       </div>
     </div>
@@ -263,146 +299,3 @@ onUnmounted(() => {
     </a-modal>
   </div>
 </template>
-
-<style scoped>
-.chat-container {
-  display: flex;
-  height: calc(100vh - 120px);
-  overflow: hidden;
-  background: #fff;
-  border-radius: 8px;
-}
-
-.chat-sidebar {
-  display: flex;
-  flex-direction: column;
-  width: 300px;
-  border-right: 1px solid #f0f0f0;
-}
-
-.sidebar-header {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: 12px 16px;
-  border-bottom: 1px solid #f0f0f0;
-}
-
-.conversation-list {
-  flex: 1;
-  overflow-y: auto;
-}
-
-.conversation-item {
-  display: flex;
-  align-items: center;
-  padding: 12px 16px;
-  cursor: pointer;
-  transition: background 0.2s;
-}
-
-.conversation-item:hover {
-  background: #f5f5f5;
-}
-
-.conversation-item.active {
-  background: #e6f4ff;
-}
-
-.conversation-info {
-  flex: 1;
-  margin-left: 12px;
-  overflow: hidden;
-}
-
-.conversation-name {
-  overflow: hidden;
-  text-overflow: ellipsis;
-  font-size: 14px;
-  font-weight: 500;
-  white-space: nowrap;
-}
-
-.conversation-last-msg {
-  margin-top: 4px;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  font-size: 12px;
-  color: #999;
-  white-space: nowrap;
-}
-
-.chat-main {
-  display: flex;
-  flex: 1;
-  flex-direction: column;
-}
-
-.chat-header {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  padding: 12px 16px;
-  font-weight: 500;
-  border-bottom: 1px solid #f0f0f0;
-}
-
-.message-list {
-  flex: 1;
-  padding: 16px;
-  overflow-y: auto;
-}
-
-.message-item {
-  margin-bottom: 16px;
-}
-
-.message-item.message-self {
-  text-align: right;
-}
-
-.message-sender {
-  margin-bottom: 4px;
-  font-size: 12px;
-  color: #999;
-}
-
-.message-content {
-  display: inline-block;
-  max-width: 60%;
-  padding: 8px 12px;
-  overflow-wrap: anywhere;
-  background: #f0f0f0;
-  border-radius: 8px;
-}
-
-.message-item.message-self .message-content {
-  color: #fff;
-  background: #1677ff;
-}
-
-.message-time {
-  margin-top: 4px;
-  font-size: 11px;
-  color: #ccc;
-}
-
-.chat-input {
-  display: flex;
-  gap: 8px;
-  padding: 12px 16px;
-  border-top: 1px solid #f0f0f0;
-}
-
-.chat-input .ant-input {
-  flex: 1;
-}
-
-.chat-empty {
-  display: flex;
-  flex: 1;
-  align-items: center;
-  justify-content: center;
-  color: #999;
-}
-</style>