Update app.py

app.py

@@ -571,6 +571,40 @@ h3 {
     margin-top: 1rem;
     gap: 0.5rem;
 }
+
+/* Dark Mode Support */
+.dark .message.bot {
+    background: #1f2937 !important;
+    border: 1px solid #374151 !important;
+    color: #e5e7eb !important;
+}
+.dark .thinking-block {
+    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
+    border-left: 4px solid #4f46e5;
+}
+.dark .thinking-content {
+    background: #111827;
+    color: #e5e7eb;
+    border: 1px solid #374151;
+}
+.dark .thinking-header {
+    color: #818cf8;
+}
+.dark .left-panel {
+    background: #111827;
+}
+.dark .left-column {
+    background: linear-gradient(to bottom, #1f2937 0%, #111827 100%);
+}
+.dark .input-box textarea {
+    background-color: #1f2937;
+    border-color: #374151 !important;
+    color: #e5e7eb;
+}
+.dark h3 {
+    color: #e5e7eb;
+}
+
 /* 滚动条美化 */
 ::-webkit-scrollbar {
     width: 8px;