body{margin:0;font-family:Inter,Arial,sans-serif;background:#111827;color:#f9fafb}#app{position:relative}#overlay{position:absolute;top:16px;left:16px;background:#111827e6;border:1px solid #374151;border-radius:8px;padding:16px;width:280px}input,button{width:100%;margin-top:8px;padding:8px}