:root{--verde:#0f5132;--fondo:#f4f6f4;--texto:#1b1f1d;--suave:#5c6661;--borde:#d9dfdb;--tarjeta:#fff;--error:#b42318;color:var(--texto);background:var(--fondo);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@media (prefers-color-scheme:dark){:root{--fondo:#111513;--texto:#e8ece9;--suave:#9aa59f;--borde:#2c3430;--tarjeta:#1a1f1c;--error:#f97066}}*{box-sizing:border-box}body{background:var(--fondo);margin:0}h1{margin:0 0 4px;font-size:1.5rem}p{line-height:1.5}code{font-size:.9em}.centro{place-items:center;min-height:100dvh;padding:16px;display:grid}.tarjeta{background:var(--tarjeta);border:1px solid var(--borde);border-radius:16px;width:100%;max-width:400px;padding:28px 24px}.marca{align-items:center;gap:12px;margin-bottom:28px;display:flex}.marca p{margin:0}.suave{color:var(--suave)}.error{color:var(--error)}button{cursor:pointer;border-radius:10px;justify-content:center;align-items:center;gap:10px;width:100%;min-height:48px;font-size:1rem;font-weight:600;display:flex}button:disabled{opacity:.6;cursor:wait}.boton-google{color:#1f1f1f;background:#fff;border:1px solid #c4c7c5}.boton-secundario{color:var(--texto);border:1px solid var(--borde);background:0 0;margin-top:16px}