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web/static/css/style.css

@@ -529,6 +529,60 @@ header {
     gap: 12px;
 }
 
+.lang-switcher {
+    position: relative;
+}
+
+.lang-switcher-btn {
+    display: inline-flex;
+    align-items: center;
+    gap: 6px;
+    padding: 6px 10px;
+    border-radius: 6px;
+    border: 1px solid var(--border-color);
+    background: var(--bg-primary);
+    color: var(--text-primary);
+    cursor: pointer;
+    font-size: 0.8125rem;
+    font-weight: 400;
+    transition: all 0.2s ease;
+}
+
+.lang-switcher-btn:hover {
+    background: var(--bg-tertiary);
+    border-color: var(--accent-color);
+    color: var(--accent-color);
+}
+
+.lang-switcher-icon {
+    font-size: 0.9rem;
+}
+
+.lang-dropdown {
+    position: absolute;
+    right: 0;
+    top: calc(100% + 6px);
+    min-width: 120px;
+    background: var(--bg-primary);
+    border-radius: 8px;
+    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.16);
+    border: 1px solid var(--border-color);
+    padding: 4px 0;
+    z-index: 100;
+}
+
+.lang-option {
+    padding: 6px 12px;
+    font-size: 0.8125rem;
+    cursor: pointer;
+    white-space: nowrap;
+}
+
+.lang-option:hover {
+    background: var(--bg-tertiary);
+    color: var(--accent-color);
+}
+
 .header-actions button {
     display: inline-flex;
     align-items: center;
@@ -1748,6 +1802,7 @@ header {
 
 .chat-input-container textarea::placeholder {
     color: var(--text-muted);
+    opacity: 0.85;
 }
 
 .chat-input-container .send-btn {