/* PROYECTO 2. ESTILOS CSS: cambia aquí colores, tamaños y espacios. */
:root{--azul:#1c4fa9;--texto:#162940;--fondo:#f3f7ff;--borde:#dce7f7;--suave:#eef5ff;--verde:#127548}*{box-sizing:border-box}body{margin:0;background:var(--fondo);color:var(--texto);font-family:system-ui,-apple-system,'Segoe UI',sans-serif;line-height:1.55}.contenedor{max-width:1280px;margin:auto;padding:24px}.cabecera{background:linear-gradient(110deg,#dcecff,#f9fcff);padding:32px;border-radius:28px;margin-bottom:24px}.marca,.etiqueta{color:var(--azul);font-size:.78rem;font-weight:850;letter-spacing:.14em}.cabecera-fila{display:flex;justify-content:space-between;align-items:center;gap:25px}.cabecera h1{font-size:clamp(2.1rem,4.2vw,3.4rem);line-height:1.12;margin:12px 0}.cabecera h1 span{color:#1a65c7}.cabecera p{max-width:800px;color:#486180;font-size:1.08rem;margin-bottom:0}.mascota{font-size:6rem}.columnas{display:grid;grid-template-columns:minmax(0,2.65fr) minmax(270px,1fr);gap:24px}.tarjeta{background:#fff;border:1px solid var(--borde);border-radius:25px;padding:30px;box-shadow:0 12px 35px #2547760a}.tarjeta h2{font-size:1.45rem;margin:0 0 6px}.subtitulo{color:#58708f;margin-top:5px}.formulario,.respuesta-formulario{display:grid;gap:14px;margin-top:28px}label{font-weight:750}input,select{font:inherit;width:100%;padding:14px 16px;border:1px solid #b9cee9;border-radius:12px;background:white;color:var(--texto)}input:focus,select:focus{outline:3px solid #b0d3ff}.boton{background:var(--azul);border:0;color:white;font:inherit;font-weight:800;padding:16px;border-radius:13px;cursor:pointer;width:100%;margin-top:8px}.boton:hover{background:#143d82}.instrucciones,.dato{background:#edf5ff;border-radius:17px;padding:20px;margin-top:28px}.instrucciones h3,.dato h3{margin:0 0 10px}.instrucciones li{margin:8px 0}.ranking{list-style:none;margin:23px 0;padding:0}.ranking li{display:flex;justify-content:space-between;gap:8px;align-items:center;padding:14px 0;border-bottom:1px solid var(--borde)}.ranking li strong:last-child{color:var(--azul);white-space:nowrap}.ranking small{display:block;color:#607899}.vacio{padding:22px;background:var(--fondo);border-radius:14px}.dato{font-size:.94rem}.dato p{margin-bottom:0}.dato.verde{background:#edfaf1}.juego-superior{display:flex;justify-content:space-between;gap:12px;background:var(--suave);padding:17px;border-radius:15px;flex-wrap:wrap}.juego-superior strong,.juego-superior .etiqueta{display:block}.progreso-texto{display:flex;justify-content:space-between;margin-top:28px}.barra{height:12px;border-radius:20px;background:#deecfa;overflow:hidden;margin:10px 0 22px}.barra div{height:100%;background:linear-gradient(90deg,#3e8cff,#37b9c5);transition:width .25s}.pregunta{text-align:center;border-radius:20px;padding:30px 10px;background:#f4f8ff}.pregunta p{color:#5b728e}.operacion{font-size:clamp(2.6rem,6vw,5rem);font-weight:900;letter-spacing:.02em}.respuesta-formulario{max-width:520px;margin:25px auto}.retroalimentacion{border:1px solid #80cfa3;background:#e8fff2;border-radius:18px;padding:24px;margin:22px 0}.retroalimentacion.mal{background:#fff4e2;border-color:#f1bf77}.retroalimentacion h3{margin-top:0}.abandonar{text-align:center;margin-top:16px}.boton-texto{border:0;background:none;color:var(--azul);cursor:pointer;text-decoration:underline;font:inherit}.resultado-final{text-align:center;padding:20px 0 34px}.emoji-grande{font-size:5rem}.numero-grande{font-weight:900;color:var(--azul);font-size:4.4rem}.numero-grande small{font-size:1rem}footer{text-align:center;color:#69809c;padding:34px}.alerta{background:#ffebeb;color:#8c1623;padding:15px;border-radius:12px;margin-bottom:16px}code{overflow-wrap:anywhere}@media(max-width:800px){.columnas{grid-template-columns:1fr}.mascota{font-size:3rem}.contenedor{padding:12px}.cabecera,.tarjeta{padding:22px}.cabecera-fila{align-items:start}}