/* =========================================================
   Áreas de conocimiento
   ========================================================= */
.pagina-areas { overflow-x: clip; }
.area-ico { width: 26px; height: 26px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Encabezado con muro de portadas ---------- */
.areas-cabeza { position: relative; isolation: isolate; overflow: hidden; background: var(--noche-fijo); color: var(--blanco-fijo);
  padding-block: clamp(28px, 5vw, 56px) clamp(40px, 7vw, 88px); }
.areas-cabeza__muro { position: absolute; inset: 0 0 0 38%; z-index: -1; pointer-events: none;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 45%); mask-image: linear-gradient(90deg, transparent 0%, #000 45%); }
.areas-cabeza__muro > div { position: absolute; top: -18%; left: 0; width: 150%; display: grid; grid-template-columns: repeat(7, 1fr); gap: 14px;
  transform: rotate(-8deg); transform-origin: top left; opacity: .55; animation: muro 60s linear infinite alternate; }
.areas-cabeza__muro img { width: 100%; height: auto; aspect-ratio: 180 / 236; object-fit: cover; border-radius: 6px; box-shadow: 0 10px 24px -10px rgba(0, 0, 0, .6); }
@keyframes muro { to { translate: -6% 4%; } }
.areas-cabeza::after { content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(70% 110% at 0% 45%, var(--noche-fijo) 45%, transparent 82%), linear-gradient(0deg, var(--noche-fijo), transparent 30%); }
.areas-cabeza__texto { display: grid; gap: 16px; max-width: var(--ancho); }
.areas-cabeza .migas, .areas-cabeza .migas a, .areas-cabeza .migas [aria-current] { color: var(--azul-hielo); }
.areas-cabeza .migas [aria-current] { color: var(--blanco-fijo); }
.areas-cabeza .etiqueta { color: #7FE0FF; }
.areas-titulo { margin: 0; font-size: var(--t-titulo); font-weight: var(--semibold); line-height: 1.02; letter-spacing: -.03em; max-width: 9em; text-wrap: balance; }
.areas-titulo .clave { display: block; font-weight: var(--light); font-style: italic; color: var(--azul-brillante); }
.areas-cabeza .intro { max-width: 31em; color: var(--azul-hielo); font-size: var(--t-sub); line-height: 1.5; margin: 0; }
.areas-cifras { display: flex; flex-wrap: wrap; gap: 12px; margin: 10px 0 0; padding: 0; list-style: none; }
.areas-cifras li { display: grid; gap: 2px; min-width: 128px; padding: 14px 18px; border-radius: var(--radio);
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(127, 224, 255, .22); backdrop-filter: blur(6px); }
.areas-cifras b { font-size: clamp(1.625rem, 1.2rem + 1.4vw, 2.25rem); font-weight: var(--semibold); line-height: 1; font-variant-numeric: tabular-nums; }
.areas-cifras span { font-size: var(--t-etiqueta); color: var(--azul-hielo); }

/* ---------- Atajos fijos ---------- */
.areas-saltos { position: sticky; top: var(--nav-alto); z-index: 15; background: color-mix(in srgb, var(--fondo) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px); border-bottom: var(--filete); }
.areas-saltos ul { display: flex; gap: 8px; margin: 0; padding: 10px 0; list-style: none; overflow-x: auto; scrollbar-width: none; scroll-snap-type: x proximity; }
.areas-saltos ul::-webkit-scrollbar { display: none; }
.areas-saltos li { flex: none; scroll-snap-align: start; }
.areas-saltos a { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px; padding: 6px 12px; border-radius: 999px;
  border: var(--filete); background: var(--fondo); color: var(--gris-carbon); font-size: .9375rem; font-weight: var(--medium); text-decoration: none; white-space: nowrap;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease; }
.areas-saltos a b { font-weight: var(--semibold); color: var(--azul-texto); font-variant-numeric: tabular-nums; }
.areas-saltos a:hover { border-color: var(--azul-clave); }
.areas-saltos a[aria-current="true"] { background: var(--azul-tinta); border-color: var(--azul-tinta); color: var(--blanco-fijo); }
.areas-saltos a[aria-current="true"] b { color: #BFEFFF; }
.area-ico--chip { width: 20px; height: 20px; color: var(--azul-clave); }
.areas-saltos a[aria-current="true"] .area-ico--chip { color: #BFEFFF; }

/* ---------- Mosaico de áreas ---------- */
.areas-mosaico { padding-block: clamp(48px, 7vw, 88px) clamp(32px, 5vw, 56px); }
.areas-mosaico .h2 .clave { font-weight: var(--light); font-style: italic; }
.at-rejilla { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); gap: 18px; margin: clamp(24px, 4vw, 36px) 0 0; padding: 0; list-style: none; }
.at__enlace { position: relative; display: grid; height: 100%; overflow: hidden; border-radius: calc(var(--radio) + 4px); border: var(--filete);
  background: var(--fondo); color: var(--gris-carbon); text-decoration: none; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.at__enlace:hover, .at__enlace:focus-visible { transform: translateY(-4px); border-color: var(--azul-clave); box-shadow: 0 22px 40px -24px rgba(0, 60, 90, .55); }
.at__abanico { position: relative; height: 150px; background: linear-gradient(160deg, var(--tinte-azul), var(--fondo)); overflow: hidden; }
.at__abanico img { position: absolute; bottom: -38px; left: 50%; width: 92px; height: auto; aspect-ratio: 180 / 236; object-fit: cover; border-radius: 4px;
  box-shadow: 0 12px 24px -10px rgba(0, 30, 50, .55); transition: transform .35s cubic-bezier(.2, .8, .2, 1); }
.at__abanico img:nth-child(1) { transform: translateX(-50%) rotate(0deg); z-index: 3; bottom: -26px; }
.at__abanico img:nth-child(2) { transform: translateX(-118%) rotate(-9deg); z-index: 2; }
.at__abanico img:nth-child(3) { transform: translateX(18%) rotate(9deg); z-index: 1; }
.at__enlace:hover .at__abanico img:nth-child(1) { transform: translateX(-50%) translateY(-10px); }
.at__enlace:hover .at__abanico img:nth-child(2) { transform: translateX(-140%) rotate(-14deg); }
.at__enlace:hover .at__abanico img:nth-child(3) { transform: translateX(40%) rotate(14deg); }
.at__cuerpo { display: grid; gap: 8px; align-content: start; padding: 20px 22px 22px; }
.at__cuerpo .area-ico { width: 34px; height: 34px; padding: 6px; border-radius: 10px; background: var(--tinte-azul); color: var(--azul-texto); }
.at__nombre { font-size: var(--t-h3); font-weight: var(--semibold); line-height: 1.2; }
.at__cifras { color: var(--gris-medio); font-size: .9375rem; font-variant-numeric: tabular-nums; }
.at__cifras b { color: var(--gris-carbon); font-weight: var(--semibold); }
.at__temas { color: var(--gris-claro); font-size: .875rem; line-height: 1.45; }
.at__peso { position: relative; height: 4px; margin-top: 4px; border-radius: 4px; background: var(--tinte-azul); overflow: hidden; }
.at__peso::after { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--p); border-radius: inherit; background: var(--azul-profundo); }
.at__ir { display: inline-flex; align-items: center; gap: 6px; margin-top: 6px; color: var(--azul-texto); font-weight: var(--semibold); font-size: .9375rem; }
.at__ir .icono { width: 18px; height: 18px; stroke: currentColor; transition: translate .2s ease; }
.at__enlace:hover .at__ir .icono { translate: 4px 0; }

/* ---------- Sección de cada área ---------- */
.area { padding-block: clamp(56px, 8vw, 104px); scroll-margin-top: calc(var(--nav-alto) + 4px); border-top: var(--filete); }
.area--banda { background: var(--blanco-hueso); }
.area__rejilla { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.5fr); gap: clamp(32px, 5vw, 72px); align-items: start; }
.area__info { display: grid; gap: 14px; position: sticky; top: calc(var(--nav-alto) + 76px); }
.area__info .etiqueta { display: inline-flex; align-items: center; gap: 10px; margin: 0; }
.area-ico--etq { width: 30px; height: 30px; padding: 5px; border-radius: 9px; background: var(--azul-tinta); color: var(--blanco-fijo); }
.area__titulo { margin: 0; }
.area__desc { margin: 0; color: var(--gris-medio); font-size: var(--t-sub); line-height: 1.5; }
.area__cifras { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin: 6px 0 0; }
.area__cifras div { padding: 12px 14px; border-radius: 12px; background: var(--fondo); border: var(--filete); }
.area__cifras dt { font-size: .8125rem; color: var(--gris-medio); line-height: 1.3; }
.area__cifras dd { margin: 4px 0 0; font-size: clamp(1.375rem, 1.1rem + .9vw, 1.75rem); font-weight: var(--semibold); line-height: 1; color: var(--azul-noche-texto); font-variant-numeric: tabular-nums; }
.area__nota { margin: -4px 0 0; font-size: .8125rem; color: var(--gris-claro); }
.area__sub { margin: 10px 0 0; font-size: var(--t-etiqueta); font-weight: var(--semibold); text-transform: uppercase; letter-spacing: .1em; color: var(--gris-medio); }
.area__temas { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.area__temas a { display: inline-flex; align-items: center; gap: 8px; min-height: 36px; padding: 5px 12px; border-radius: 999px; border: var(--filete);
  background: var(--fondo); color: var(--gris-carbon); font-size: .875rem; text-decoration: none; }
.area__temas a span { font-size: .75rem; color: var(--gris-claro); font-variant-numeric: tabular-nums; }
.area__temas a:hover { border-color: var(--azul-clave); color: var(--azul-texto); }
.area__botones { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.area__botones .icono { width: 20px; height: 20px; stroke: currentColor; }
.area__rel { margin: 0; font-size: .9375rem; color: var(--gris-medio); }
.area__rel a { color: var(--azul-texto); font-weight: var(--medium); text-underline-offset: 3px; }
.area__rel a + a::before { content: " · "; color: var(--gris-claro); display: inline-block; white-space: pre; text-decoration: none; }

/* Gráfica: libros por año */
.ag { margin: 6px 0 0; }
.ag figcaption { margin-bottom: 8px; font-size: var(--t-etiqueta); font-weight: var(--semibold); text-transform: uppercase; letter-spacing: .1em; color: var(--gris-medio); }
.ag__barras { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 6px; height: 112px; margin: 0; padding: 0; list-style: none; }
.ag__barras li { display: grid; grid-template-rows: auto 1fr auto; align-items: end; justify-items: center; gap: 4px; min-width: 0; }
.ag__valor { font-size: .75rem; font-weight: var(--semibold); color: var(--gris-carbon); font-variant-numeric: tabular-nums; }
.ag__barra { align-self: end; width: 100%; max-width: 30px; height: var(--h); min-height: 2px; border-radius: 4px 4px 0 0; background: var(--barra); }
.ag__anio { font-size: .6875rem; color: var(--gris-claro); font-variant-numeric: tabular-nums; }

/* Lo más consultado */
.area__libros { display: grid; gap: 14px; min-width: 0; }
.area__libros .area__sub:first-child { margin-top: 0; }
.al-lista { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px 18px; margin: 0 0 18px; padding: 0; list-style: none; }
.al__enlace { position: relative; display: grid; gap: 6px; color: var(--gris-carbon); text-decoration: none; }
.al__tapa { display: block; overflow: hidden; border-radius: 8px; background: var(--tinte-azul); box-shadow: 0 14px 28px -18px rgba(0, 40, 60, .55); }
.al__tapa img { display: block; width: 100%; height: auto; aspect-ratio: 180 / 236; object-fit: cover; transition: transform .4s cubic-bezier(.2, .8, .2, 1); }
.al__enlace:hover .al__tapa img { transform: scale(1.04); }
.al__rango { position: absolute; z-index: 2; top: -10px; left: -10px; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  background: var(--azul-tinta); color: var(--blanco-fijo); font-weight: var(--semibold); font-size: .9375rem; box-shadow: 0 6px 14px -6px rgba(0, 40, 60, .6); }
.al__meta { margin-top: 6px; font-size: .75rem; color: var(--gris-claro); letter-spacing: .02em; }
.al__titulo { font-weight: var(--semibold); line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.al__enlace:hover .al__titulo { color: var(--azul-texto); text-decoration: underline; text-underline-offset: 3px; }
.al__autor { font-size: .875rem; color: var(--gris-medio); }
.al__datos { display: flex; flex-wrap: wrap; gap: 4px 10px; font-size: .75rem; color: var(--azul-texto); font-weight: var(--medium); font-variant-numeric: tabular-nums; }

/* Recién publicados */
.ar-lista { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 0; padding: 0; list-style: none; }
.ar-lista a { display: flex; gap: 12px; height: 100%; padding: 12px; border-radius: 12px; border: var(--filete); background: var(--fondo); color: var(--gris-carbon); text-decoration: none;
  transition: border-color .2s ease; }
.ar-lista a:hover { border-color: var(--azul-clave); }
.ar-lista img { flex: none; width: 56px; height: auto; aspect-ratio: 180 / 236; object-fit: cover; border-radius: 4px; }
.ar-lista a > span { display: grid; gap: 3px; align-content: start; min-width: 0; }
.ar__fecha { font-size: .75rem; color: var(--azul-texto); font-weight: var(--medium); }
.ar__titulo { font-size: .9375rem; font-weight: var(--semibold); line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.ar__autor { font-size: .8125rem; color: var(--gris-medio); }

/* Cierre */
.areas-cta { padding-block: clamp(48px, 7vw, 88px); }
.areas-cta__caja { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px 32px; padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radio); background: var(--noche-fijo); color: #fff; }
.areas-cta .etiqueta { color: #7FE0FF; }
.areas-cta__titulo { margin: 6px 0; font-size: clamp(1.25rem, 1rem + 1vw, 1.75rem); font-weight: var(--semibold); line-height: 1.25; max-width: 24em; }
.areas-cta p:last-child { color: var(--azul-hielo); max-width: 40em; margin: 0; }
.areas-cta__botones { display: flex; flex-wrap: wrap; gap: 10px; }
.areas-cta .boton-contorno { color: var(--blanco-fijo); border-color: var(--azul-brillante); }
.areas-cta .boton-contorno:hover { background: rgba(255, 255, 255, .08); }

.areas-arriba { position: fixed; z-index: 30; right: calc(16px + env(safe-area-inset-right, 0px)); bottom: calc(88px + env(safe-area-inset-bottom, 0px));
  display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; border: var(--filete); background: var(--fondo); color: var(--azul-texto);
  box-shadow: 0 10px 24px -12px rgba(0, 40, 60, .5); cursor: pointer; }
.areas-arriba svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* Aparición suave */
.js .area .al, .js .area .ar-lista li { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s cubic-bezier(.2, .8, .2, 1); }
.js .area.visible .al, .js .area.visible .ar-lista li { opacity: 1; transform: none; }
.js .area.visible .al:nth-child(2) { transition-delay: .05s; } .js .area.visible .al:nth-child(3) { transition-delay: .1s; }
.js .area.visible .al:nth-child(4) { transition-delay: .15s; } .js .area.visible .al:nth-child(5) { transition-delay: .2s; } .js .area.visible .al:nth-child(6) { transition-delay: .25s; }
.js .area .ag__barra { transform: scaleY(0); transform-origin: bottom; transition: transform .7s cubic-bezier(.2, .8, .2, 1); }
.js .area.visible .ag__barra { transform: none; }

/* Modo nocturno */
html[data-tema="noche"] .area--banda { background: var(--marfil); }
html[data-tema="noche"] .areas-saltos a[aria-current="true"] { background: #0E5F86; border-color: #0E5F86; }
html[data-tema="noche"] .at__enlace:hover { box-shadow: 0 22px 40px -24px rgba(0, 0, 0, .9); }
html[data-tema="noche"] .area-ico--etq { background: #0E5F86; }

/* ---------- Tableta ---------- */
@media (max-width: 960px) {
  .area__rejilla { grid-template-columns: minmax(0, 1fr); }
  .area__info { position: static; }
  .areas-cabeza__muro { inset: 0 0 0 20%; }
}
/* ---------- Celular ---------- */
@media (max-width: 640px) {
  .areas-cabeza__muro { inset: 0; opacity: .5; -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 70%); mask-image: linear-gradient(180deg, #000 0%, transparent 70%); }
  .areas-cabeza__muro > div { grid-template-columns: repeat(5, 1fr); width: 170%; left: -20%; }
  .areas-cabeza::after { background: linear-gradient(180deg, color-mix(in srgb, var(--noche-fijo) 55%, transparent) 0%, var(--noche-fijo) 55%); }
  .areas-cifras { display: grid; grid-template-columns: 1fr 1fr; }
  .areas-cifras li { min-width: 0; }
  .al-lista { display: flex; gap: 14px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 12px 16px 6px; margin-inline: calc(-1 * var(--gutter)); padding-inline: var(--gutter);
    scrollbar-width: none; }
  .al-lista::-webkit-scrollbar { display: none; }
  .al { flex: 0 0 44%; scroll-snap-align: start; }
  .ar-lista { grid-template-columns: minmax(0, 1fr); }
  .area__cifras dd { font-size: 1.25rem; }
  .areas-cta__botones, .areas-cta__botones a { width: 100%; }
  .at-rejilla { gap: 12px; }
  .at__enlace { grid-template-columns: 112px minmax(0, 1fr); }
  .at__abanico { height: auto; min-height: 150px; }
  .at__abanico img { width: 56px; bottom: auto; top: 50%; }
  .at__abanico img:nth-child(1) { transform: translate(-50%, -50%); bottom: auto; }
  .at__abanico img:nth-child(2) { transform: translate(-88%, -56%) rotate(-10deg); }
  .at__abanico img:nth-child(3) { transform: translate(-12%, -44%) rotate(10deg); }
  .at__cuerpo { padding: 14px 16px 16px; gap: 6px; }
  .at__cuerpo .area-ico { display: none; }
  .at__nombre { font-size: 1.0625rem; }
  .at__cifras { font-size: .875rem; }
  .at__temas { display: none; }
  .at__ir { margin-top: 2px; }
}
@media (prefers-reduced-motion: reduce) {
  .areas-cabeza__muro > div { animation: none; }
  .js .area .al, .js .area .ar-lista li, .js .area .ag__barra { opacity: 1; transform: none; transition: none; }
}