Improve style

style/loading.css

@@ -0,0 +1,15 @@
+@layer components {
+    .loading {
+        @apply bg-surface dark:bg-dark_surface text-on_surface dark:text-dark_on_surface;
+        @apply min-h-screen p-5;
+        @apply flex flex-col justify-center;
+
+        & svg {
+            @apply mx-auto w-12 h-12;
+        }
+
+        & p {
+            @apply text-center;
+        }
+    }
+}