:root{--tinta:#1a2b3c;--papel:#f5f7fa;--marca:#0f7b6c;--erro:#b3261e;--borda:#d5dbe2}*{box-sizing:border-box}body{color:var(--tinta);background:var(--papel);margin:0;font:16px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}.centro{place-items:center;min-height:100dvh;padding:1.5rem;display:grid}.cartao{border:1px solid var(--borda);background:#fff;border-radius:12px;width:100%;max-width:26rem;padding:2rem 1.5rem}h1{margin:0 0 .35rem;font-size:1.35rem}.sub{color:#5a6b7c;margin:0 0 1.5rem;font-size:.9rem}label{margin:1rem 0 .3rem;font-size:.85rem;font-weight:600;display:block}input{width:100%;font:inherit;border:1px solid var(--borda);color:inherit;background:#fff;border-radius:8px;padding:.7rem .8rem}input:focus{outline:2px solid var(--marca);outline-offset:1px}button{width:100%;font:inherit;color:#fff;background:var(--marca);cursor:pointer;border:0;border-radius:8px;margin-top:1.5rem;padding:.8rem;font-weight:600}button:disabled{opacity:.6;cursor:progress}.erro{color:var(--erro);background:#fdecea;border-radius:8px;margin-top:1rem;padding:.7rem .8rem;font-size:.9rem}