Update app.py

app.py

@@ -533,7 +533,7 @@ async def predict(image):
             display: inline-flex;
             align-items: center;
             padding: 12px 24px;
-            background-color: #00509E; 
+            background: linear-gradient(145deg, #00509E, #003F7F); 
             color: white;
             border-radius: 8px;
             text-decoration: none;
@@ -541,12 +541,18 @@ async def predict(image):
             transition: all 0.3s ease;
             font-weight: 600;
             font-size: 1.1em;
+            box-shadow: 
+                0 2px 4px rgba(0,0,0,0.1),
+                inset 0 1px 1px rgba(255,255,255,0.1);
         }}
         
         .akc-button:hover {{
-            background-color: #003F7F;
+            background: linear-gradient(145deg, #003F7F, #00509E);  /* 懸停時反轉漸層方向 */
             transform: translateY(-1px);
             color: white;
+            box-shadow: 
+               0 4px 8px rgba(0,0,0,0.15),
+               inset 0 1px 1px rgba(255,255,255,0.2);
         }}
         
         .warning-message {{