Update app.py

app.py

@@ -42,20 +42,20 @@ def respond(message, history, model, temperature, max_tokens):
 # -------------------------
 custom_css = """
 body {
-    background: linear-gradient(135deg, #0f172a, #1e293b);
+    background: linear-gradient(135deg, #ffd966, #1e293b);
 }
 
 #title {
     text-align: center;
     font-size: 40px;
     font-weight: bold;
-    color: #fbbf24;
+    color: #990000;
 }
 
 #subtitle {
     text-align: center;
     font-size: 24px;
-    color: #ffffff;
+    color: #660000;
 }
 """