:root{--fundo: #111111;--texto: #f5f5f5;--acento: #dd183b;--borda: #2a2a2a;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--fundo);color:var(--texto)}.centro{min-height:100vh;display:grid;place-items:center;padding:1rem}.cartao{width:min(24rem,100%);background:#191919;border:1px solid var(--borda);border-radius:10px;padding:2rem;display:grid;gap:1rem}h1{margin:0;font-size:1.4rem}h2{margin:0;font-size:1rem}label{display:grid;gap:.35rem;font-size:.9rem}input{padding:.6rem .7rem;border-radius:6px;border:1px solid var(--borda);background:#0e0e0e;color:var(--texto);font-size:1rem}button{padding:.6rem .9rem;border-radius:6px;border:1px solid var(--acento);background:var(--acento);color:#fff;font-size:.95rem;cursor:pointer}button:disabled{opacity:.5;cursor:default}ul{list-style:none;margin:0;padding:0;display:grid;gap:.5rem}[role=alert]{color:#ff8095;margin:0;font-size:.9rem}