:root{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.4}body{margin:0;background:#f5f7fb}.container{max-width:560px;margin:32px auto;padding:0 16px}.card{display:grid;gap:12px;padding:16px;border-radius:10px;background:#fff;box-shadow:0 2px 10px #00000014}input{padding:10px 12px;border:1px solid #cfd6e4;border-radius:8px}button{padding:10px 14px;border:none;border-radius:8px;background:#2c63ff;color:#fff;cursor:pointer}button[disabled]{opacity:.7;cursor:not-allowed}.actions{display:flex;gap:8px}.error{color:#b00020}.message{color:#0a7a2f}