/* =====================================================================
   BIBLIOTECA — curaduría de contenidos para aprender
   Selección de artículos, vídeos, libros y podcasts (de otros).
   Reutiliza tokens y patrones del sistema TITONET (styles.css).
   Prefijo propio: .bib-*
   ===================================================================== */

/* ---------- Hero / banner editorial ---------- */
.bib-hero{
  border-bottom:1px solid var(--rule);
  background:var(--bg);
}
.bib-hero-inner{
  padding:56px 32px 40px;
  display:grid;
  grid-template-columns:1.15fr .85fr;
  column-gap:56px;
  align-items:end;
}
.bib-hero-eyebrow{ color:var(--muted); }
.bib-hero-title{
  font-family:var(--serif); font-weight:400;
  font-size:clamp(44px, 6vw, 72px); line-height:1.04;
  letter-spacing:-.015em; color:var(--ink);
  margin:14px 0 0;
}
.bib-hero-title em{ font-style:italic; color:var(--insight-2); }
.bib-hero-lede{
  font-size:18px; line-height:1.55; color:var(--ink-2);
  max-width:52ch; margin:20px 0 0;
}
.bib-hero-note{
  display:inline-flex; align-items:center; gap:10px;
  margin-top:22px; font-size:13.5px; color:var(--ink-2);
}
.bib-hero-note .bib-lock{
  width:26px; height:26px; flex:none;
  display:grid; place-items:center;
  border:1px solid var(--rule); background:var(--paper);
}
.bib-hero-note .bib-lock svg{ width:14px; height:14px; stroke:var(--ink-2); }

/* Hero figure (foto de la biblioteca) */
.bib-hero-figure{
  position:relative; margin:0; align-self:end;
  border:1px solid var(--rule); background:var(--paper); padding:8px;
}
.bib-hero-figure img{ display:block; width:100%; height:auto; }
.bib-hero-figure .fc{
  position:absolute; width:10px; height:10px; border:1.5px solid var(--insight-2);
}
.bib-hero-figure .fc.tl{ top:-1px; left:-1px; border-right:0; border-bottom:0; }
.bib-hero-figure .fc.tr{ top:-1px; right:-1px; border-left:0; border-bottom:0; }
.bib-hero-figure .fc.bl{ bottom:-1px; left:-1px; border-right:0; border-top:0; }
.bib-hero-figure .fc.br{ bottom:-1px; right:-1px; border-left:0; border-top:0; }


/* Stat panel */
.bib-hero-stats{
  border:1px solid var(--rule);
  background:var(--paper);
  display:grid; grid-template-columns:1fr 1fr;
}
.bib-stat{
  padding:22px 24px;
  border-bottom:1px solid var(--rule);
}
.bib-stat:nth-child(odd){ border-right:1px solid var(--rule); }
.bib-stat:nth-last-child(-n+2){ border-bottom:0; }
.bib-stat-num{
  font-family:var(--serif); font-size:38px; line-height:1; color:var(--ink);
  display:block;
}
.bib-stat-lbl{
  display:flex; align-items:center; gap:8px;
  margin-top:10px; font-size:12px; font-weight:600;
  letter-spacing:.04em; color:var(--muted); text-transform:uppercase;
}
.bib-stat-lbl svg{ width:16px; height:16px; stroke:var(--ink-2); flex:none; }

/* ---------- Sticky section nav ---------- */
.bib-secnav{
  position:sticky; top:var(--header-h, 64px); z-index:20;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:saturate(1.2) blur(8px);
  border-bottom:1px solid var(--rule);
}
.bib-secnav-inner{
  display:flex; align-items:center; gap:8px;
  padding:12px 32px; overflow-x:auto;
}
.bib-secnav-lbl{
  font-size:11px; font-weight:700; letter-spacing:.16em;
  text-transform:uppercase; color:var(--muted); margin-right:6px; flex:none;
}
.bib-secnav a{
  display:inline-flex; align-items:center; gap:8px; flex:none;
  padding:7px 14px; border:1px solid var(--rule);
  font-size:13.5px; font-weight:500; color:var(--ink);
  text-decoration:none; background:var(--paper);
  transition:border-color .15s, background .15s;
}
.bib-secnav a:hover{ border-color:var(--navy); background:var(--tint-hover); }
.bib-secnav a .c{ color:var(--muted); font-variant-numeric:tabular-nums; }

/* ---------- Sección ---------- */
.bib-section{
  padding:60px 0 8px;
  border-top:1px solid var(--rule);
  scroll-margin-top:120px;
}
.bib-section:first-of-type{ border-top:0; }
.bib-sec-head{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:start; column-gap:24px;
  padding-bottom:28px;
}
.bib-sec-n{
  font-family:var(--serif); font-size:34px; line-height:1;
  color:var(--muted); font-variant-numeric:tabular-nums;
}
.bib-sec-head-main{ min-width:0; }
.bib-sec-titlerow{ display:flex; align-items:center; gap:12px; flex-wrap:wrap; }
.bib-sec-icon{
  width:30px; height:30px; flex:none; display:grid; place-items:center;
}
.bib-sec-icon svg{ width:24px; height:24px; stroke:var(--ink); }
.bib-sec-title{
  font-family:var(--serif); font-weight:400; font-size:30px;
  line-height:1.1; color:var(--ink); margin:0;
}
.bib-sec-count{
  font-family:var(--mono); font-size:12px; color:var(--ink-2);
  border:1px solid var(--rule); padding:3px 9px; white-space:nowrap;
}
.bib-sec-lede{
  font-size:15.5px; line-height:1.5; color:var(--ink-2);
  max-width:62ch; margin:12px 0 0;
}
.bib-sec-viewall{
  align-self:center; display:inline-flex; align-items:center; gap:9px;
  white-space:nowrap; padding:11px 16px;
  border:1px solid var(--navy); background:transparent;
  color:var(--ink); font-size:13.5px; font-weight:600; text-decoration:none;
  transition:background .15s, color .15s;
}
.bib-sec-viewall:hover{ background:var(--ink-block); color:var(--on-ink); }
.bib-sec-viewall .theme-cta{ transition:none; }
.bib-sec-viewall:hover .theme-cta svg{ stroke:var(--on-amber); }

/* ---------- Grids ---------- */
.bib-grid{ display:grid; gap:20px; }
.bib-grid.cards-2{ grid-template-columns:repeat(2, 1fr); }
.bib-grid.cards-3{ grid-template-columns:repeat(3, 1fr); }
.bib-grid.cards-4{ grid-template-columns:repeat(4, 1fr); }

/* ---------- Artículo (tarjeta tipográfica, sin foto) ---------- */
.bib-art{
  display:flex; flex-direction:column;
  padding:22px; min-height:230px;
  border:1px solid var(--rule); background:var(--paper);
  text-decoration:none; color:inherit;
  transition:border-color .15s, transform .15s, box-shadow .15s;
}
.bib-art:hover{ border-color:var(--navy); transform:translateY(-2px); box-shadow:var(--shadow-card); }
.bib-art-src{
  font-size:10.5px; font-weight:700; letter-spacing:.14em; text-transform:uppercase;
  color:var(--amber-2);
}
.bib-art-title{
  font-family:var(--serif); font-weight:400; font-size:21px; line-height:1.25;
  color:var(--ink); margin:12px 0 0; text-wrap:pretty;
}
.bib-art-meta{
  margin-top:auto; padding-top:16px;
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  border-top:1px solid var(--rule);
}
.bib-art-byline{ font-size:13px; color:var(--ink-2); }
.bib-art-byline .yr{ color:var(--muted); }
.bib-ext{
  display:inline-flex; align-items:center; gap:7px;
  font-size:12.5px; font-weight:600; color:var(--ink); white-space:nowrap;
}
.bib-ext svg{ width:14px; height:14px; stroke:currentColor; }

/* ---------- Vídeo (thumbnail YouTube) ---------- */
.bib-vid{
  display:flex; flex-direction:column;
  border:1px solid var(--rule); background:var(--paper);
  text-decoration:none; color:inherit;
  transition:border-color .15s, transform .15s, box-shadow .15s;
}
.bib-vid:hover{ border-color:var(--navy); transform:translateY(-2px); box-shadow:var(--shadow-card); }
.bib-vid-thumb{
  position:relative; aspect-ratio:16/9; overflow:hidden; background:var(--gris-calido);
  border-bottom:1px solid var(--rule);
}
.bib-vid-thumb img{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
}
.bib-vid-play{
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
  width:54px; height:54px; display:grid; place-items:center;
  background:rgba(11,29,58,.82); color:var(--insight);
}
.bib-vid-play svg{ width:22px; height:22px; margin-left:2px; }
.bib-vid:hover .bib-vid-play{ background:var(--insight); color:var(--azul-marino); }
.bib-vid-badge{
  position:absolute; left:10px; top:10px;
  font-family:var(--mono); font-size:10.5px; letter-spacing:.04em;
  color:#fff; background:rgba(11,29,58,.78);
  padding:3px 8px;
}
.bib-vid-body{ padding:16px 16px 18px; display:flex; flex-direction:column; flex:1; }
.bib-vid-chan{
  font-size:10.5px; font-weight:700; letter-spacing:.12em; text-transform:uppercase;
  color:var(--muted);
}
.bib-vid-title{
  font-family:var(--serif); font-weight:400; font-size:18px; line-height:1.28;
  color:var(--ink); margin:9px 0 0; text-wrap:pretty;
  display:-webkit-box; -webkit-box-orient:vertical; -webkit-line-clamp:2; line-clamp:2; overflow:hidden;
}
.bib-vid-foot{ margin-top:auto; padding-top:14px; }

/* ---------- Libro (portada tipográfica) ---------- */
.bib-book{
  display:flex; gap:18px;
  border:1px solid var(--rule); background:var(--paper); padding:18px;
  text-decoration:none; color:inherit;
  transition:border-color .15s, transform .15s, box-shadow .15s;
}
.bib-book:hover{ border-color:var(--navy); transform:translateY(-2px); box-shadow:var(--shadow-card); }
.bib-book-cover{
  position:relative; flex:none; width:92px; aspect-ratio:2/3;
  background:linear-gradient(160deg, var(--navy-2) 0%, var(--azul-marino) 100%);
  display:flex; flex-direction:column; justify-content:space-between;
  padding:12px 11px; overflow:hidden;
}
.bib-book-cover .bc-band{ height:2px; background:var(--insight); width:26px; }
.bib-book-cover .bc-t{
  font-family:var(--serif); font-size:12.5px; line-height:1.18; color:#FAF6EC;
  display:-webkit-box; -webkit-box-orient:vertical; -webkit-line-clamp:4; line-clamp:4; overflow:hidden;
}
.bib-book-cover .bc-a{ font-family:var(--mono); font-size:8.5px; letter-spacing:.04em; color:rgba(250,246,236,.7); text-transform:uppercase; }
.bib-book-body{ display:flex; flex-direction:column; min-width:0; }
.bib-book-cat{
  font-size:10.5px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--amber-2);
}
.bib-book-title{
  font-family:var(--serif); font-weight:400; font-size:18px; line-height:1.25;
  color:var(--ink); margin:8px 0 0; text-wrap:pretty;
}
.bib-book-author{ font-size:13px; color:var(--ink-2); margin-top:5px; }
.bib-book-foot{ margin-top:auto; padding-top:14px; }

/* ---------- Podcast ---------- */
.bib-pod{
  display:flex; flex-direction:column; gap:0;
  border:1px solid var(--rule); background:var(--paper);
  text-decoration:none; color:inherit;
  transition:border-color .15s, transform .15s, box-shadow .15s;
}
.bib-pod:hover{ border-color:var(--navy); transform:translateY(-2px); box-shadow:var(--shadow-card); }
.bib-pod-top{
  display:flex; align-items:center; gap:14px; padding:18px 18px 14px;
  border-bottom:1px solid var(--rule);
}
.bib-pod-art{
  flex:none; width:52px; height:52px; display:grid; place-items:center;
  background:var(--ink-block); color:var(--insight);
  overflow:hidden;
}
.bib-pod-art img{ width:100%; height:100%; object-fit:cover; display:block; }
.bib-pod-art svg{ width:24px; height:24px; stroke:currentColor; }
.bib-pod-kind{
  font-size:10.5px; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--muted);
}
.bib-pod-show{ font-size:13.5px; color:var(--ink-2); margin-top:3px; }
.bib-pod-body{ padding:14px 18px 18px; display:flex; flex-direction:column; flex:1; }
.bib-pod-title{
  font-family:var(--serif); font-weight:400; font-size:18px; line-height:1.28;
  color:var(--ink); margin:0; text-wrap:pretty;
  display:-webkit-box; -webkit-box-orient:vertical; -webkit-line-clamp:2; line-clamp:2; overflow:hidden;
}
.bib-pod-foot{ margin-top:auto; padding-top:14px; }
.bib-wave{ display:flex; align-items:flex-end; gap:2px; height:16px; }
.bib-wave span{ width:2px; background:var(--insight); }

/* ---------- Pie de sección: muro de acceso ---------- */
.bib-sec-foot{
  margin-top:24px; padding:18px 22px;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  border:1px solid var(--rule); border-left:2px solid var(--insight);
  background:var(--bg-soft);
}
.bib-sec-foot-txt{ font-size:14px; color:var(--ink-2); }
.bib-sec-foot-txt strong{ color:var(--ink); font-weight:600; }
.bib-sec-foot a{
  flex:none; display:inline-flex; align-items:center; gap:8px;
  font-size:13.5px; font-weight:600; color:var(--ink); text-decoration:none;
}
.bib-sec-foot a .theme-cta{ transform:translateY(0); }

/* ---------- Cierre: invitación a acceder ---------- */
.bib-gate-wrap{ padding:24px 0 8px; }

/* ---------- Artículo: thumb con wordmark de la fuente (pastilla .ar-card) ---------- */
.bib-srcthumb{
  background:var(--ink-block)!important;
  display:flex; align-items:center; justify-content:center;
}
.bib-srcthumb .bib-wm{
  font-family:var(--serif); font-weight:400; font-size:30px; line-height:1;
  color:#FAF6EC; letter-spacing:.01em;
}

/* ---------- Artículo: hueco de imagen rellenable (image-slot) ---------- */
.bib-slot-thumb{
  position:relative; width:100%; aspect-ratio:16/10; overflow:hidden;
  background:var(--bg-soft); border-bottom:1px solid var(--rule);
}
.bib-slot-thumb image-slot{ display:block; width:100%; height:100%; }

/* ---------- Libro: portada tipográfica provisional (molde .bk-card) ---------- */
.bib-cover-ph{
  height:100%; aspect-ratio:2/3; min-width:96px;
  background:linear-gradient(160deg, var(--navy-2) 0%, var(--azul-marino) 100%);
  display:flex; flex-direction:column; justify-content:space-between;
  padding:14px 12px;
  box-shadow:-1px 0 0 rgba(11,29,58,.12), 0 14px 22px rgba(11,29,58,.18), 0 4px 8px rgba(11,29,58,.1);
}
.bib-cph-band{ height:2px; width:24px; background:var(--insight); }
.bib-cph-t{ font-family:var(--serif); font-size:13px; line-height:1.2; color:#FAF6EC; }
.bib-cph-a{ font-family:var(--mono); font-size:8.5px; letter-spacing:.04em; text-transform:uppercase; color:rgba(250,246,236,.7); }

/* ---------- Marcador "por confirmar" ---------- */
.bib-prov{ color:var(--muted); font-size:11px; font-weight:600; letter-spacing:.02em; }

/* ---------- Responsive ---------- */
@media (max-width:1080px){
  .bib-grid.cards-4{ grid-template-columns:repeat(2, 1fr); }
  .bib-grid.cards-3{ grid-template-columns:repeat(2, 1fr); }
}
@media (max-width:900px){
  .bib-hero-inner{ grid-template-columns:1fr; row-gap:32px; padding:40px 20px 32px; }
}
@media (max-width:720px){
  .bib-sec-head{ grid-template-columns:auto 1fr; row-gap:16px; }
  .bib-sec-viewall{ grid-column:1 / -1; justify-content:center; }
  .bib-grid.cards-4, .bib-grid.cards-3{ grid-template-columns:1fr; }
  .bib-sec-foot{ flex-direction:column; align-items:flex-start; }
}
@media (max-width:560px){
  .bib-hero-stats{ grid-template-columns:1fr; }
  .bib-stat:nth-child(odd){ border-right:0; }
  .bib-stat{ border-bottom:1px solid var(--rule); }
  .bib-stat:last-child{ border-bottom:0; }
}