Update app.py

app.py

@@ -265,7 +265,7 @@ custom_css = """
         transform: scale(0.95);
     }
     #clear-history {
-        background-color: linear-gradient(135deg, #ff0000 0%, #ff7300 100%); /* Red gradient */
+        background: linear-gradient(135deg, #e53e3e 0%, #f56565 100%); /* Red gradient */
         color: white;
         border: none;
         border-radius: 8px;
@@ -276,7 +276,7 @@ custom_css = """
         margin-top: 10px;
     }
     #clear-history:hover {
-        background-color: #f56565; /* Lighter red */
+        background: linear-gradient(135deg, #c53030 0%, #e53e3e 100%); /* Slightly darker red gradient on hover */
         box-shadow: 0 6px 8px rgba(229, 62, 62, 0.4);
     }
     #clear-history:active {