changed css

app.py

@@ -85,7 +85,8 @@ button {
 }
 
 button:hover {
-    background-color: #a3a6a8;  /* Slightly darker on hover */
+    background-color: #343536;  /* Dark background on hover */
+    color: #bdc2c7;  /* Light text color on hover */
 }
 
 .slider {