:root{--morado:#4c1fd6;--gris-texto:#444;--fondo:#fafafa;color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--fondo);color:#111}.contenedor{max-width:420px;margin:0 auto;padding:32px 20px;min-height:100dvh;display:flex;flex-direction:column}.titulo{font-size:24px;font-weight:700;margin-bottom:4px}.subtitulo{color:var(--gris-texto);margin-bottom:24px;font-size:15px}.campo{width:100%;padding:14px 16px;font-size:17px;border:1px solid #ddd;border-radius:10px;margin-bottom:12px}.boton{width:100%;padding:14px;font-size:16px;font-weight:600;color:#fff;background:var(--morado);border:none;border-radius:10px;cursor:pointer}.boton:disabled{opacity:.5;cursor:default}.error{color:#c0392b;font-size:14px;margin-bottom:12px}