diff --git a/app/app.css b/app/app.css
index da21390..e29413d 100644
--- a/app/app.css
+++ b/app/app.css
@@ -58,3 +58,13 @@ model-viewer {
     color: rgb(156 163 175); /* gray-400 */
     opacity: 1;
 }
+
+@keyframes float {
+    0%, 100% { transform: translateY(0); }
+    50% { transform: translateY(-12px); }
+}
+
+@keyframes fade-up {
+    from { opacity: 0; transform: translateY(12px); }
+    to { opacity: 1; transform: translateY(0); }
+}