body{margin:0;min-height:100vh;display:grid;place-items:center;background:#10131a;color:#f4f7fb;font:16px system-ui,sans-serif}.card{width:min(360px,calc(100vw - 40px));padding:28px;border:1px solid #30384a;border-radius:16px;background:#181d27;box-sizing:border-box}input,button{width:100%;box-sizing:border-box;padding:11px;margin-top:8px;border-radius:8px;font:inherit}input{border:1px solid #48536a;background:#10131a;color:#fff}button{margin-top:20px;border:0;background:#5b8cff;color:#fff}.error{min-height:20px;color:#ff9b9b;margin-top:12px}