/* biblioteca.css – Bibliothek der Download-Dokumente (src/pages/biblioteca.html, js/biblioteca.js) */
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.bb{overflow-x:clip}
.bb-hero{padding:150px 0 30px;background:radial-gradient(900px 500px at 70% 0%,rgba(123,92,196,.35),transparent 65%),radial-gradient(700px 400px at 0% 100%,rgba(95,212,240,.08),transparent 60%)}
.bb-hero h1{font-size:clamp(34px,5.4vw,62px);margin:14px 0 16px;letter-spacing:.02em;
  background:linear-gradient(180deg,#fff 25%,#c9b8ff 75%,#e3bf6e);-webkit-background-clip:text;background-clip:text;color:transparent}
.bb-lang{font-size:14px;color:var(--faint);margin:-4px 0 0;max-width:760px}
.bb-stats{margin:14px 0 0;font:600 12px/1.5 var(--font);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);min-height:1.5em}

/* Suche */
.bb-tools{margin-top:26px;max-width:760px}
.bb-search{position:relative}
.bb-search svg{position:absolute;left:18px;top:50%;width:20px;height:20px;transform:translateY(-50%);color:var(--faint);pointer-events:none}
.bb-search .field{width:100%;height:54px;padding:0 20px 0 50px;border-radius:999px;background:rgba(255,255,255,.05);font-size:16px;transition:border-color .2s,background .2s}
.bb-search .field:focus{outline:none;border-color:var(--gold);background:rgba(255,255,255,.07);box-shadow:0 0 0 4px rgba(227,191,110,.12)}
.bb-search .field::placeholder{color:var(--faint)}

/* Chips (wie im Blog) */
.bb-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.bb-chips .chip{display:inline-flex;align-items:center;gap:8px;min-height:40px;font:600 12px/1.2 var(--font);letter-spacing:.04em;color:var(--muted);background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:999px;padding:9px 14px;cursor:pointer;transition:.2s;text-align:left}
.bb-chips .chip span{font-weight:700;font-size:11px;color:var(--faint);background:rgba(255,255,255,.06);border-radius:999px;padding:2px 7px}
.bb-chips .chip:hover{color:var(--gold);border-color:var(--gold)}
.bb-chips .chip.on{color:#1a1405;background:var(--gold);border-color:var(--gold)}
.bb-chips .chip.on span{color:#1a1405;background:rgba(26,20,5,.14)}
.bb-chips[hidden]{display:none}
.bb-subs{margin-top:10px;padding-top:12px;border-top:1px dashed var(--line)}
.bb-subs .chip{padding:7px 12px;font-size:11.5px}
.bb-subs .chip b{color:var(--gold);font-weight:700}
.bb-subs .chip.on b{color:#1a1405}

/* Liste */
.bb-list{padding:6px 0 100px}
.bb-count{color:var(--faint);font-size:14px;margin:0 0 6px;min-height:1.4em}
.bb-cat{padding:0;margin-top:30px}
.bb-cat+.bb-cat{margin-top:64px}
.bb-cat-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px 28px;flex-wrap:wrap;padding-bottom:18px;margin-bottom:22px;border-bottom:1px solid var(--line)}
.bb-cat-head>div{flex:1 1 420px;min-width:0}
.bb-cat-head h2{font-size:clamp(24px,3vw,34px);margin:0 0 8px}
.bb-cat-head p{color:var(--muted);margin:0 0 6px;max-width:720px;font-size:15px;line-height:1.6}
.bb-cat-head small{font:600 11.5px/1.4 var(--font);letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}
.bb-zip{flex:0 0 auto;padding:12px 20px;font-size:12px}
.bb-zip svg,.bb-act svg,.bb-docx svg{width:16px;height:16px;flex:0 0 auto}
.bb-subsec+.bb-subsec{margin-top:34px}
.bb-subh{display:flex;align-items:center;gap:12px;font-size:19px;margin:0 0 16px;color:var(--text)}
.bb-subh span{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;border:1px solid rgba(227,191,110,.55);color:var(--gold);font:700 14px/1 var(--font);flex:0 0 auto}

/* Karten */
.bb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(232px,1fr));gap:18px}
.bb-card{display:flex;flex-direction:column;overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s;min-width:0}
.bb-card:hover{border-color:rgba(227,191,110,.5);transform:translateY(-3px);box-shadow:0 18px 40px -22px rgba(0,0,0,.8)}
.bb-thumb{position:relative;display:flex;align-items:center;justify-content:center;aspect-ratio:4/3;padding:16px;overflow:hidden;
  background:radial-gradient(circle at 50% 40%,rgba(123,92,196,.28),transparent 70%),linear-gradient(160deg,var(--bg-3),var(--bg-2))}
.bb-thumb img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:3px;box-shadow:0 10px 26px -8px rgba(0,0,0,.75),0 0 0 1px rgba(255,255,255,.08);transition:transform .4s}
.bb-card:hover .bb-thumb img{transform:scale(1.04)}
.bb-thumb.is-video img{border-radius:8px}
.bb-play{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
.bb-play svg{width:54px;height:54px;filter:drop-shadow(0 4px 12px rgba(0,0,0,.6))}
.bb-kind{position:absolute;right:10px;top:10px;font:700 10px/1 var(--font);letter-spacing:.12em;color:var(--muted);background:rgba(7,10,28,.78);border:1px solid var(--line);border-radius:6px;padding:5px 7px;backdrop-filter:blur(4px)}
.bb-body{display:flex;flex-direction:column;flex:1;padding:16px 18px 18px;gap:6px;min-width:0}
.bb-body h3{display:flex;align-items:flex-start;gap:10px;font:600 15.5px/1.4 var(--font);letter-spacing:.005em;color:var(--text);overflow-wrap:break-word;hyphens:auto}
.bb-num{flex:0 0 auto;margin-top:1px;padding:3px 8px;border-radius:7px;background:rgba(227,191,110,.12);border:1px solid rgba(227,191,110,.4);color:var(--gold);font:700 12px/1.3 var(--font);letter-spacing:.02em}
.bb-orig{display:block;font-size:12.5px;line-height:1.4;color:var(--faint);font-style:italic}
.bb-meta{margin:0;padding-top:2px;font-size:12.5px;color:var(--faint);letter-spacing:.02em}
.bb-act{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:auto;padding-top:12px}
.bb-act .btn{justify-content:center;gap:7px;padding:11px 10px;font-size:11.5px;letter-spacing:.06em;min-width:0;min-height:40px}   /* Touch-Ziel ≥ 40 px */
.bb-docx{display:inline-flex;align-items:center;gap:6px;margin-top:0;min-height:40px;font-size:12.5px;color:var(--cyan);text-decoration:none;align-self:flex-start}
.bb-docx:hover{color:var(--gold)}

.bb-empty{padding:50px 0;text-align:center;color:var(--muted)}
.bb-empty a{color:var(--gold)}
.bb-empty .btn{margin-top:6px}
.bb-note{margin:60px auto 0;max-width:760px;text-align:center;font-size:13.5px;color:var(--faint);line-height:1.6}
.bb-note a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}   /* KU-06: Link im Fließtext nicht nur über die Farbe erkennbar */

@media (max-width:640px){
  .bb-hero{padding:118px 0 18px}
  .bb-hero .lead{font-size:16px}
  .bb-search .field{height:50px;font-size:15px}
  .bb-chips{gap:6px}
  .bb-chips .chip{padding:8px 11px;font-size:11.5px}
  .bb-cat{margin-top:22px}
  .bb-cat+.bb-cat{margin-top:48px}
  .bb-cat-head{align-items:flex-start;margin-bottom:16px}
  .bb-cat-head>div{flex-basis:100%}
  .bb-zip{width:100%;justify-content:center}
  .bb-subsec+.bb-subsec{margin-top:26px}
  .bb-subh{font-size:17px}
  .bb-grid{grid-template-columns:minmax(0,1fr);gap:10px}
  .bb-card{flex-direction:row;align-items:stretch}
  .bb-card:hover{transform:none}
  .bb-thumb{flex:0 0 96px;aspect-ratio:auto;padding:10px 8px;align-items:flex-start}
  .bb-thumb img{max-height:128px}
  .bb-play svg{width:36px;height:36px}
  .bb-kind{display:none}
  .bb-body{padding:12px 12px 12px 4px;gap:4px}
  .bb-body h3{font-size:14px;gap:8px}
  .bb-num{font-size:11px;padding:2px 6px}
  .bb-orig{font-size:12px}
  .bb-meta,.bb-docx{font-size:12px}
  .bb-act{gap:6px;padding-top:10px}
  .bb-act .btn{padding:10px 6px;font-size:12px;letter-spacing:0;text-transform:none}
  .bb-act .btn svg{display:none}
}
/* Brotkrumen (gleiches Bild wie im Blog, .b-crumbs in blog.css) */
.pg-crumbs{font-size:13px;line-height:1.5;color:var(--faint);margin-bottom:18px}
.pg-crumbs a{color:var(--gold);text-decoration:none}
.pg-crumbs a:hover,.pg-crumbs a:focus-visible{text-decoration:underline}
.pg-crumbs [aria-current]{color:var(--muted)}
/* Gegen Layoutsprünge (CLS): Platz für Liste und Kategorie-Chips, bis biblioteca.js gefüllt hat */
.bb-loading{min-height:150vh}
#bb-cats:empty{min-height:var(--bb-cats-h,90px)}
#bb-stats:empty::before{content:"\00a0"}