Update app.py

app.py

@@ -1109,6 +1109,15 @@ select {
         min-height: 70px !important;
     }
 }
+
+/* Loading Spinner */
+.loading::after {
+    content: "⌛";
+    animation: spin 1s linear infinite;
+}
+@keyframes spin {
+    100% { transform: rotate(360deg); }
+}
 """
 
 # Initialize storage and components (must be after get_topics_list)