style: enhance layout and spacing in site settings page for improved user experience

app/sites/[id]/settings/page.tsx

@@ -160,7 +160,8 @@ export default function SiteSettingsPage() {
   }
 
   return (
-    <div className="max-w-4xl mx-auto space-y-8 pb-12">
+    <div className="min-h-screen pt-12 pb-12 px-4 sm:px-6">
+      <div className="max-w-4xl mx-auto space-y-8">
         <div>
           <h1 className="text-3xl font-bold text-neutral-900 dark:text-white">Site Settings</h1>
           <p className="mt-2 text-neutral-600 dark:text-neutral-400">
@@ -519,5 +520,6 @@ export default function SiteSettingsPage() {
         </div>
       </div>
     </div>
+  </div>
   )
 }