/* ==================================================================
   Lumi · Estilos comunes del portal
   Colores y tipografías según el Manual de identidad v1.2.
   Texto y controles: siempre azul petróleo (#194F5A), 9.1:1 sobre
   blanco. Turquesa, coral y amarillo: solo decoración.
   ================================================================== */
:root{
  --pet:#194F5A; --tur:#45A6AD; --men:#6DCEC5; --ama:#F8C85F;
  --cor:#EF9275; --cie:#E8F5F6; --bla:#FFFFFF; --borde:#A9D3D6;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--bla);color:var(--pet);
  font:18px/1.55 Arial,"Helvetica Neue",system-ui,sans-serif}
h1,h2,h3,h4{font-family:"Trebuchet MS",system-ui,sans-serif;font-weight:700;line-height:1.25;margin:0}
a{color:var(--pet);text-underline-offset:3px}
a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{
  outline:3px solid var(--pet);outline-offset:2px;border-radius:6px}
img{max-width:100%;height:auto}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.saltar{position:absolute;left:-999px;top:0;z-index:20;background:var(--pet);color:#fff;padding:.7rem 1rem}
.saltar:focus{left:1rem}
.saltar:focus-visible{outline-color:var(--ama)}
.envoltura{max-width:1100px;margin:0 auto;padding:0 16px}

/* ---------- encabezado ---------- */
.cabecera{border-bottom:3px solid var(--men);background:#fff;position:sticky;top:0;z-index:10}
.cabecera .envoltura{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:76px;flex-wrap:wrap}
.marca{display:inline-flex;align-items:center;padding:.3rem 0}
.marca img{width:150px;display:block}
.menu{display:flex;gap:.3rem;flex-wrap:wrap;align-items:center}
.menu a{display:inline-flex;align-items:center;min-height:44px;padding:0 .8rem;border-radius:999px;
  font-weight:700;text-decoration:none}
.menu a:hover{background:var(--cie)}
.menu a[aria-current="page"]{background:var(--cie);text-decoration:underline}
.idioma{display:inline-flex;align-items:center;gap:.15rem;border:2px solid var(--pet);border-radius:999px;padding:2px}
.idioma a,.idioma span{display:inline-flex;align-items:center;min-height:40px;padding:0 .8rem;border-radius:999px;font-weight:700;text-decoration:none}
.idioma span[aria-current]{background:var(--pet);color:#fff}

/* ---------- portada ---------- */
.portada{background:var(--cie)}
.portada .envoltura{display:grid;grid-template-columns:260px minmax(0,1fr);gap:2rem;align-items:center;padding-top:2rem;padding-bottom:2rem}
.portada h1{font-size:clamp(1.9rem,4.5vw,2.8rem)}
.portada .lema{font-size:1.2rem;margin:.6rem 0 0}
.portada .figura{order:-1;background:#fff;border-radius:50%;aspect-ratio:1;display:grid;place-items:center;overflow:hidden;border:4px solid #fff;box-shadow:0 0 0 3px var(--men)}
.portada .figura img{width:82%}
.cifras{display:flex;gap:1.2rem;flex-wrap:wrap;margin:1.2rem 0 0;padding:0;list-style:none}
.cifras li{background:#fff;border-radius:12px;padding:.5rem .9rem}
.cifras b{font-size:1.4rem;font-family:"Trebuchet MS",sans-serif}

main{display:block;padding:1.5rem 0 3rem}
.bloque{margin:2rem 0}
.bloque > h2{font-size:1.6rem;margin-bottom:1rem}

/* chips de grados */
.chips{display:flex;flex-wrap:wrap;gap:.6rem;list-style:none;margin:0;padding:0}
.chips a,.chips span{display:inline-flex;flex-direction:column;justify-content:center;align-items:center;
  min-width:110px;min-height:64px;padding:.5rem .9rem;border-radius:16px;border:2px solid var(--pet);
  background:#fff;font-weight:700;text-decoration:none;text-align:center;line-height:1.2}
.chips a:hover{background:var(--cie)}
.chips small{font-weight:400;font-size:.85rem;margin-top:.15rem}
.chips span{border-style:dashed;border-color:#7FA9AE;font-weight:400}

/* tarjetas de materias */
.materias{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem;list-style:none;margin:0;padding:0}
.materias a{display:flex;align-items:center;gap:.9rem;padding:1rem;min-height:88px;border-radius:16px;
  background:var(--cie);border:2px solid transparent;text-decoration:none;font-weight:700;font-size:1.1rem}
.materias a:hover{border-color:var(--pet)}
.materias li{display:flex}
.materias li>a{flex:1}  /* todas las tarjetas de materia con la misma altura */
.materias small{display:block;font-weight:400;font-size:.9rem}
.icono{flex:0 0 52px;width:52px;height:52px}

/* ---------- navegación interna (anclas) ---------- */
.anclas{display:flex;flex-wrap:wrap;gap:.4rem;list-style:none;padding:.8rem;margin:0 0 1rem;background:var(--cie);border-radius:14px}
.anclas a{display:inline-flex;align-items:center;min-height:44px;padding:0 .9rem;border-radius:999px;background:#fff;font-weight:700;text-decoration:none;border:2px solid var(--pet)}
.anclas a:hover{background:var(--pet);color:#fff}

/* ---------- secciones por grado / materia ---------- */
.seccion,.sub,#contenido{scroll-margin-top:96px}
.seccion{margin:2.2rem 0;padding-top:.4rem}
.seccion > h2{display:flex;align-items:center;gap:.7rem;font-size:1.7rem;padding-bottom:.4rem;border-bottom:3px solid var(--men)}
.seccion > h2 .icono{flex-basis:44px;width:44px;height:44px}
.sub{margin:1.3rem 0}
.sub > h3{font-size:1.25rem;margin-bottom:.7rem;display:flex;align-items:center;gap:.5rem}
.sub > h3 .icono{flex-basis:32px;width:32px;height:32px}
.vacio{background:var(--cie);border-radius:14px;padding:1rem 1.2rem;display:flex;gap:1rem;align-items:center}
.vacio img{width:72px;height:86px;object-fit:contain;border-radius:14px;background:#fff;flex:0 0 auto}
/* Encabezado de «Por grado» y «Por materia»: Lumi en un círculo, como en la portada */
.vacio.banner .circulo{flex:0 0 auto;width:104px;aspect-ratio:1;border-radius:50%;background:#fff;display:grid;place-items:center;overflow:hidden;border:3px solid #fff;box-shadow:0 0 0 3px var(--men)}
.vacio.banner .circulo img{width:80%;height:auto;border-radius:0;background:none}
.arriba{font-size:.95rem;margin:.8rem 0 0}

.series{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem}
.serie{border:2px solid var(--borde);border-radius:16px;padding:1rem 1.1rem;background:#fff;display:flex;flex-direction:column;gap:.5rem}
.serie .tipo{align-self:flex-start;font-size:.85rem;font-weight:700;background:var(--cie);border-radius:999px;padding:.15rem .7rem}
.serie h4{font-size:1.15rem}
.serie h4 a{display:inline-block;padding:.2rem 0}
.aviso{margin:0;font-size:.95rem;display:flex;gap:.4rem}
.aviso::before{content:"ⓘ";font-weight:700}
details{border-top:1px solid var(--borde);padding-top:.4rem}
summary{cursor:pointer;min-height:44px;display:flex;align-items:center;gap:.4rem;font-weight:700;list-style:none}
summary::-webkit-details-marker{display:none}
summary::before{content:"▸";font-size:1.1em}
details[open] > summary::before{content:"▾"}
details ol{margin:.3rem 0 .4rem;padding-left:1.6rem}
details li{margin:.25rem 0}

/* ---------- pie ---------- */
.pie{background:var(--pet);color:#fff;padding:1.5rem 0;text-align:center}
.pie a{color:#fff}
.pie a:focus-visible{outline-color:var(--ama)}
.pie p{margin:.3rem 0}
.pie img{width:110px}

@media (max-width:760px){
  body{font-size:17px}
  .portada .envoltura{grid-template-columns:minmax(0,1fr)}
  .portada .figura{width:190px;margin:0 auto;order:-1}
  .marca img{width:120px}
  .cabecera .envoltura{padding-top:.4rem;padding-bottom:.3rem;gap:.2rem .5rem;min-height:0}
  .cabecera .menu{order:3;width:100%;justify-content:space-between;gap:0}
  .menu a{padding:0 .5rem;font-size:.95rem}
  .idioma a,.idioma span{min-height:36px;padding:0 .6rem;font-size:.95rem}
  .seccion,.sub,#contenido{scroll-margin-top:130px}
}
@media print{
  .cabecera,.anclas,.arriba,.pie,.saltar{display:none}
  details{border:0} details:not([open]) ol{display:block}
}