Update app.py

app.py

@@ -148,6 +148,9 @@ with gr.Blocks() as demo:
             margin-top: 27px; /* Add margin-top to the button */
             background: linear-gradient(135deg, #4a00e0 0%, #8e2de2 100%); /* Purple gradient */
         }
+        #api_key_button:hover {
+            background: linear-gradient(135deg, #5b10f1 0%, #9f3ef3 100%); /* Slightly lighter */
+        }
     </style>
     """)