/* ============================================================
   belschak.dev v4: /oss/ Register (Welle 1, Slot B)
   Shared stylesheet fuer die Open-Source-Abteilung: Index + Case-Seiten.
   Ladereihenfolge wie Blog: fonts.css, tokens.css, base.css, oss.css.

   Charakter-Move: "Registratur". Der Blog ist der Lesesaal, /oss/ ist
   die Werkbank-Kartei: Mono-Registerkarten mit Reg-Nummern und dem
   harten Offset-Schatten der Homepage-Sektion 03, Pruef-Stempel,
   Fakten-Rail als Spec-Sheet, Night-Terminals als Beweis-Blöcke.
   Palette/Fonts/Scale strikt aus tokens.css (MASTER.md), nichts erfunden.

   Gewicht: kein GSAP/Lenis/SplitText auf /oss/-Seiten. Motion =
   CSS-Load-Rise (.rise, wie Blog) + optionales Inline-IO-Snippet
   (~15 Zeilen, siehe _shell-reference.html). no-JS/reduced: alles
   sichtbar, Initial-Verstecken haengt an html.oss-io (setzt nur JS).

   Kontrast-Vertraege (gerechnet, QA-verifiziert):
   - ink auf paper 14:1, ink-soft auf paper 6.7:1, bone auf night 15:1
   - coral-deep auf paper 4.67:1 -> ok fuer Mono-Kleintext.
     coral-deep auf paper-deep nur 4.19:1 -> dort ink verwenden!
   - coral auf paper 3.14:1 -> NUR Display-Groessen/Deko, nie Kleintext
   - Stempel: coral-deep auf paper, lamplight auf night (7.7:1)
   ============================================================ */

:root{
  /* lokale Ableitungen, identische Werte wie blog.css (eine Familie) */
  --ink-2:#40382B;                       /* Zwischenton ink/ink-soft */
  --hair:rgba(26,21,13,0.18);
  --hair-2:rgba(26,21,13,0.12);
  --ease:cubic-bezier(.2,.6,.2,1);
  --stamp-ease:cubic-bezier(.2,.9,.3,1.2);  /* Stempel-Druck, leichtes Settle */
  --edge:min(6vw,58px);
  --frame:760px;                         /* Case-Lese-Spalte */
  --frame-wide:1140px;                   /* Index-Grid + Case-Layout mit Rail */
}

html{background:var(--paper)}

/* Sonnenfleck + Korn wie der Blog (Familien-Kontinuitaet der Subseiten),
   Fleck bewusst oben LINKS: die Registratur spiegelt den Lesesaal. */
body{
  min-height:100vh;
  background:
    radial-gradient(900px 480px at 10% -10%, rgba(232,88,61,0.05), transparent 60%),
    var(--paper);
}
body::after{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:6;opacity:0.4;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.86' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.028 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Spalten (ueberschreiben bewusst base.css .wrap, wie blog.css) */
.wrap{width:auto;max-width:var(--frame);margin:0 auto;padding:0 var(--edge)}
.wrap-wide{width:auto;max-width:var(--frame-wide);margin:0 auto;padding:0 var(--edge)}

/* ---------- Masthead (gleiche Stimme wie Blog + Landing) ---------- */
.masthead{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:26px 0 15px;border-bottom:1px solid var(--hair);
  font-family:var(--font-mono);font-size:11px;letter-spacing:0.2em;text-transform:uppercase;color:var(--ink-soft);
}
.masthead .brand{color:var(--ink-2);font-weight:500}
.masthead .brand .dot{color:var(--coral)}
a.brand{border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .3s var(--ease)}
a.brand:hover{border-color:var(--coral)}
.masthead .where{color:var(--ink-soft)}
.masthead .where a{color:var(--ink-soft);border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .3s var(--ease),color .3s var(--ease)}
.masthead .where a:hover{color:var(--ink-2);border-color:var(--coral)}

/* ---------- Seitenkopf (Index) ---------- */
.pagehead{padding:10vh 0 6vh}
.kicker{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:0.26em;text-transform:uppercase;
  color:var(--ink-soft);display:flex;align-items:center;gap:12px;margin-bottom:26px;
}
.kicker::before{content:'';width:34px;height:1px;background:var(--coral);flex:none}
.pagehead h1{
  font-family:var(--font-display);font-weight:560;
  font-size:clamp(42px,7vw,72px);line-height:0.96;letter-spacing:-0.02em;
  font-variation-settings:'opsz' 144;
}
.pagehead h1 .dot{color:var(--coral)}
.pagehead .standfirst{
  font-family:var(--font-display);font-weight:400;font-variation-settings:'opsz' 40;
  color:var(--ink-2);font-size:clamp(17px,2.2vw,20px);line-height:1.5;
  max-width:44ch;margin-top:22px;
}

/* ---------- Registerkarten ----------
   Funktioniert als <a class="oss-card"> (ganze Karte -> Case-Seite,
   Muster A, Index-Default) und als <article class="oss-card"> mit
   .oss-links im Fuss (Muster B, wenn mehrere Ziele noetig sind). */
.oss-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));
  gap:clamp(22px,3vw,36px);
  padding:2vh 0 12vh;
  align-items:stretch;
}
.oss-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--paper);
  border:1px solid var(--ink);
  box-shadow:8px 8px 0 0 var(--paper-deep);
  text-decoration:none;color:inherit;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
a.oss-card:hover{
  transform:translate(-2px,-2px);
  box-shadow:11px 11px 0 0 var(--paper-deep);
  color:inherit;
}
.oss-card-head{
  display:flex;align-items:center;gap:12px;
  padding:12px 18px;border-bottom:1px solid var(--ink);
  font-family:var(--font-mono);
}
.oss-no{
  font-size:11px;letter-spacing:.08em;color:var(--coral-deep);
  font-variant-numeric:tabular-nums;flex:none;
}
.oss-path{font-size:12.5px;color:var(--ink);overflow-wrap:anywhere}
.oss-path strong{font-weight:700}
.oss-chip{
  margin-left:auto;flex:none;
  font-size:10px;letter-spacing:0.14em;text-transform:uppercase;
  border:1px solid var(--ink-soft);color:var(--ink-soft);
  padding:3px 8px;white-space:nowrap;
}
.oss-card-main{padding:18px 18px 20px;display:flex;flex-direction:column;gap:12px;flex:1}
.oss-card-title{
  font-family:var(--font-display);font-weight:500;font-variation-settings:'opsz' 40;
  font-size:clamp(20px,1.8vw,24px);line-height:1.16;letter-spacing:-0.012em;color:var(--ink);
}
/* Titel-Unterstreichung zeichnet beim Karten-Hover ein (per-line-safe) */
.oss-card-title .t{
  text-decoration:underline;text-decoration-color:transparent;
  text-decoration-thickness:2px;text-underline-offset:5px;
  transition:text-decoration-color .35s var(--ease);
}
a.oss-card:hover .oss-card-title .t{text-decoration-color:var(--coral)}
.oss-card-text{font-family:var(--font-body);font-size:15px;line-height:1.6;color:var(--ink-soft)}
/* Fusszeile der Kompakt-Karte: Case-CTA oder Meta-Notiz */
.oss-card-cta{
  margin-top:auto;padding-top:14px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--ink);
  display:flex;align-items:center;gap:8px;
}
.oss-card-cta .ar{transition:transform .3s var(--ease);color:var(--coral-deep)}
a.oss-card:hover .oss-card-cta .ar{transform:translateX(5px)}

/* Feature-Variante: volle Grid-Breite, groesserer Schatten + Titel,
   coral-deep Chip, ab 900px zweispaltiges Innenlayout (Text | Terminal). */
.oss-card--feature{grid-column:1 / -1;box-shadow:12px 12px 0 0 var(--paper-deep)}
.oss-card--feature .oss-chip{border-color:var(--coral-deep);color:var(--coral-deep)}
.oss-card--feature .oss-card-title{
  font-variation-settings:'opsz' 72;
  font-size:clamp(26px,3vw,40px);line-height:1.08;max-width:22ch;
}
.oss-card--feature .oss-card-main{padding:clamp(20px,2.6vw,30px) clamp(18px,2.2vw,26px) clamp(20px,2.6vw,28px)}
@media (min-width:900px){
  .oss-feature-body{
    display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
    gap:clamp(24px,3.5vw,56px);align-items:center;
  }
}

/* ---------- Case-Kopf (Artikel-Register wie Blog) ---------- */
.arthead{padding:9vh 0 0}
.artmeta{
  font-family:var(--font-mono);font-size:11px;letter-spacing:0.2em;text-transform:uppercase;
  color:var(--ink-soft);display:flex;align-items:center;gap:12px;flex-wrap:wrap;
}
.artmeta::before{content:'';width:34px;height:1px;background:var(--coral);flex:none}
.artmeta .repo{color:var(--ink-2)}
.arthead h1{
  font-family:var(--font-display);font-weight:560;
  font-size:clamp(34px,5.6vw,54px);line-height:1.04;letter-spacing:-0.018em;
  font-variation-settings:'opsz' 110;
  margin-top:24px;max-width:20ch;
}
.arthead h1 .dot{color:var(--coral)}
.arthead .standfirst{
  font-family:var(--font-display);font-weight:400;font-style:italic;font-variation-settings:'opsz' 40;
  color:var(--ink-2);font-size:clamp(17px,2.2vw,20px);line-height:1.5;
  max-width:36ch;margin-top:20px;
}
.artrule{border:none;width:100%;height:1px;background:var(--hair);margin:6vh 0 0}

/* ---------- Case-Layout: Prosa + Fakten-Rail ----------
   Mobile: Rail als Block VOR der Prosa (Spec zuerst).
   Ab 1100px: Prosa links, Rail rechts sticky. */
.case{
  max-width:var(--frame-wide);margin:0 auto;padding:0 var(--edge);
  display:grid;grid-template-columns:minmax(0,1fr);gap:0 64px;
}
.case-rail{padding-top:5vh}
.case-body{min-width:0}
@media (min-width:1100px){
  .case{grid-template-columns:minmax(0,1fr) 272px}
  .case-body{grid-column:1;grid-row:1}
  .case-rail{grid-column:2;grid-row:1;padding-top:6vh}
  .case-rail .oss-facts{position:sticky;top:28px}
}

/* ---------- Fakten-Rail: das Spec-Sheet der Kartei ---------- */
.oss-facts{
  font-family:var(--font-mono);
  background:var(--paper);border:1px solid var(--ink);
  box-shadow:6px 6px 0 0 var(--paper-deep);
}
.oss-facts-title{
  display:flex;align-items:center;gap:10px;
  padding:10px 16px;border-bottom:1px solid var(--ink);
  font-size:10.5px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-soft);
}
.oss-facts-title::before{content:'';width:18px;height:1px;background:var(--coral);flex:none}
.oss-facts dl{margin:0;padding:6px 16px 10px}
.oss-facts .row{
  display:flex;justify-content:space-between;align-items:baseline;gap:14px;
  padding:8px 0;border-bottom:1px solid var(--hair-2);
}
.oss-facts .row:last-child{border-bottom:none}
.oss-facts dt{
  font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-soft);flex:none;
}
.oss-facts dd{
  margin:0;font-size:12.5px;color:var(--ink);text-align:right;overflow-wrap:anywhere;
}
.oss-facts dd a{
  color:var(--ink);text-decoration:underline;text-decoration-color:var(--coral);
  text-decoration-thickness:1.5px;text-underline-offset:3px;
  transition:color .2s var(--ease),text-decoration-color .2s var(--ease);
}
.oss-facts dd a:hover{color:var(--coral-deep);text-decoration-color:var(--coral-deep)}

/* ---------- Pruef-Stempel ----------
   Default coral-deep (4.67:1 auf paper). Auf paper-deep-Flaechen ink
   verwenden (--ink Variante), auf night-Flaechen lamplight (--night).
   Rotation pro Instanz variierbar: style="--stamp-rot:1.5deg". */
.oss-stamp{
  position:relative;display:inline-block;
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;
  color:var(--coral-deep);
  border:2px solid currentColor;
  padding:6px 12px 5px;
  transform:rotate(var(--stamp-rot,-2deg));
  white-space:nowrap;
}
.oss-stamp::before{
  content:'';position:absolute;inset:2px;border:1px solid currentColor;
  opacity:.5;pointer-events:none;
}
.oss-stamp--ink{color:var(--ink)}
.oss-stamp--night{color:var(--lamplight)}
/* im Prosa-Fluss: Stempel steht frei mit Luft */
.prose .oss-stamp{margin:.4em 0 1.35em}

/* ---------- Terminal-Block: der Beweis-Block der Kartei ---------- */
.oss-term{
  background:var(--night);color:var(--bone);
  font-family:var(--font-mono);font-size:12.5px;line-height:1.7;
  padding:16px 18px;border-radius:6px;
  overflow-wrap:anywhere;white-space:pre-wrap;
  margin:0;
}
.oss-term code{font-family:inherit;background:none;border:none;padding:0;font-size:inherit;color:inherit;white-space:inherit}
.oss-term-prompt{color:var(--coral)}   /* 5.4:1 auf night */
.oss-term-out{color:rgba(241,232,216,.72)}
.oss-cursor{
  display:inline-block;width:8px;height:15px;background:var(--bone);
  vertical-align:-2px;margin-left:4px;
}
@media (prefers-reduced-motion:no-preference){
  .oss-cursor{animation:oss-blink 1.1s step-end infinite}
  @keyframes oss-blink{0%,54%{opacity:1}55%,100%{opacity:0}}
}
.prose .oss-term{margin:1.7em 0}
.oss-feature-body .oss-term{align-self:stretch}

/* ---------- Link-Zeilen: mono, coral-Unterstreichung ---------- */
.oss-links{display:flex;flex-wrap:wrap;gap:10px 28px;padding:16px 18px 18px}
.prose .oss-links,.oss-card-main .oss-links{padding:0;margin:0}
.prose .oss-links{margin:1.5em 0}
.oss-link{
  font-family:var(--font-mono);font-size:13px;letter-spacing:0.04em;
  color:var(--ink);text-decoration:underline;
  text-decoration-color:var(--coral);text-decoration-thickness:1.5px;text-underline-offset:4px;
  transition:color .2s var(--ease),text-decoration-color .2s var(--ease);
}
.oss-link:hover{color:var(--coral-deep);text-decoration-color:var(--coral-deep)}

/* ---------- Case-Prosa (Register wie Blog, /oss/-Ergaenzungen oben) ---------- */
.prose{
  font-family:var(--font-body);font-weight:400;
  font-size:18px;line-height:var(--leading-body);color:var(--ink);
  max-width:36em;padding:6vh 0 4vh;
}
.prose p{margin:0 0 1.35em}
.prose strong{font-weight:600}
.prose em{font-style:italic}
.prose a{
  color:var(--ink);text-decoration:underline;text-decoration-color:rgba(232,88,61,.5);
  text-decoration-thickness:1px;text-underline-offset:3.5px;
  transition:text-decoration-color .3s var(--ease),color .3s var(--ease);
}
.prose a:hover{color:var(--coral-deep);text-decoration-color:var(--coral-deep)}
.prose h2{
  font-family:var(--font-display);font-weight:560;font-variation-settings:'opsz' 60;
  font-size:27px;line-height:1.2;letter-spacing:-0.01em;
  margin:2.3em 0 .75em;position:relative;
}
.prose h3{
  font-family:var(--font-display);font-weight:560;font-variation-settings:'opsz' 40;
  font-size:21px;line-height:1.3;margin:2em 0 .6em;position:relative;
}
.anchor{
  position:absolute;left:-1.15em;top:0;
  font-family:var(--font-mono);font-weight:400;font-size:.82em;line-height:inherit;
  color:var(--coral-deep);opacity:0;transition:opacity .25s var(--ease);
  text-decoration:none;
}
.prose h2:hover .anchor,.prose h3:hover .anchor,
.anchor:focus-visible{opacity:1}
@media (max-width:600px){
  .anchor{position:static;margin-right:.35em;opacity:.55}
}
.prose ul,.prose ol{margin:0 0 1.35em;padding-left:1.5em}
.prose li{margin-bottom:.45em}
.prose li::marker{color:var(--coral-deep);font-family:var(--font-mono);font-size:.85em}
.prose blockquote{
  border-left:2px solid var(--coral);
  margin:1.8em 0;padding:.2em 0 .2em 1.4em;
  font-family:var(--font-display);font-style:italic;font-variation-settings:'opsz' 40;
  color:var(--ink-2);font-size:1.04em;line-height:1.6;
}
.prose blockquote p{margin-bottom:.7em}
.prose blockquote p:last-child{margin-bottom:0}
.prose blockquote cite{
  display:block;font-style:normal;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);margin-top:.9em;
}
.prose hr{border:none;width:34px;height:2px;background:var(--coral);margin:3.2em 0;opacity:.9}

/* Tabelle */
.prose .tablewrap{overflow-x:auto;margin:1.7em 0}
.prose table{width:100%;border-collapse:collapse;font-family:var(--font-body);font-size:14.5px;line-height:1.5}
.prose th{
  font-family:var(--font-mono);font-weight:500;font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-soft);text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--hair);
}
.prose td{padding:12px 14px 12px 0;border-bottom:1px solid var(--hair-2);vertical-align:top;color:var(--ink-2)}
.prose td:first-child,.prose th:first-child{width:3.2em}
.prose td:first-child{font-family:var(--font-mono);color:var(--coral-deep);font-variant-numeric:tabular-nums}
.prose td:last-child,.prose th:last-child{padding-right:0}
.prose table code{white-space:nowrap}

/* Code: inline auf paper-deep, Bloecke als Night-Terminal (wie Blog) */
.prose code{
  font-family:var(--font-mono);font-size:.82em;
  background:var(--paper-deep);border:1px solid var(--hair-2);border-radius:3px;
  padding:1px 6px 2px;white-space:nowrap;
}
.prose pre{
  background:var(--night);border:none;border-radius:6px;
  padding:20px 22px;margin:1.7em 0;overflow-x:auto;line-height:1.62;
}
.prose pre code{
  background:none;border:none;padding:0;white-space:pre;
  font-size:13.5px;color:var(--bone);
}
/* Terminal in der Prosa: die .oss-term-Vertraege muessen die .prose-pre-
   Defaults schlagen (hoehere Spezifitaet): Umbruch statt Scrollen,
   kompaktes Padding, Schriftgroesse erbt vom Terminal. */
.prose pre.oss-term{white-space:pre-wrap;overflow-x:visible;overflow-wrap:anywhere;padding:16px 18px;line-height:1.7}
.prose pre.oss-term code{white-space:inherit;font-size:inherit;color:inherit}

/* handgetaggte Syntax-Toenung: bone + lamplight, kein Highlight-JS */
.tok-c{color:rgba(241,232,216,.6);font-style:italic}  /* comment  */
.tok-k{color:var(--bone);font-weight:600}             /* keyword  */
.tok-s{color:var(--lamplight)}                        /* string   */
.tok-p{color:rgba(241,232,216,.6)}                    /* punct/op */

/* ---------- Case-Fuss + Seiten-Footer ---------- */
.artfoot{border-top:1px solid var(--hair);margin-top:6vh;padding:26px 0 0;
  display:flex;justify-content:space-between;align-items:baseline;gap:18px;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}
.artfoot a{color:var(--ink-2);border-bottom:1px solid var(--hair);padding-bottom:2px;
  transition:border-color .3s var(--ease)}
.artfoot a:hover{border-color:var(--coral)}

footer.site{border-top:1px solid var(--hair);margin-top:10vh;padding:26px 0 56px}
footer.site .fgrid{
  display:flex;justify-content:space-between;align-items:baseline;gap:18px;flex-wrap:wrap;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:0.14em;text-transform:uppercase;color:var(--ink-soft);
}
footer.site a{color:var(--ink-2);border-bottom:1px solid var(--hair);padding-bottom:2px;
  transition:border-color .3s var(--ease);text-transform:none;letter-spacing:.02em}
footer.site a:hover{border-color:var(--coral)}

/* ---------- Motion 1: Load-Rise (CSS only, above the fold) ---------- */
@media (prefers-reduced-motion:no-preference){
  .rise{opacity:0;transform:translateY(14px);animation:rise .7s var(--ease) forwards}
  .rise.d1{animation-delay:.06s}
  .rise.d2{animation-delay:.14s}
  .rise.d3{animation-delay:.22s}
  .rise.d4{animation-delay:.3s}
  @keyframes rise{to{opacity:1;transform:none}}
}

/* html.oss-static: setzt das IO-Snippet bei reduced-motion oder ?reduced=1.
   Schaltet auch die CSS-only-Animationen statisch (voller QA-Pass per URL). */
html.oss-static .rise{animation:none;opacity:1;transform:none}
html.oss-static .oss-cursor{animation:none}

/* ---------- Motion 2: Scroll-Reveal (IO, progressive enhancement) ----------
   html.oss-io setzt NUR das Inline-Snippet (nie bei reduced-motion,
   nie bei ?reduced=1, nie ohne IntersectionObserver). Ohne die Klasse
   ist alles statisch sichtbar: no-JS-Garantie lebt hier. */
html.oss-io [data-io]{
  opacity:0;transform:translateY(16px);
  transition:opacity .65s var(--ease),transform .65s var(--ease);
  transition-delay:var(--io-delay,0s);
}
html.oss-io [data-io].in-view{opacity:1;transform:none}
/* Stempel-Druck: kommt gross an und setzt auf (Overshoot-Ease) */
html.oss-io .oss-stamp[data-io]{
  transform:rotate(var(--stamp-rot,-2deg)) scale(1.35);
  transition:opacity .35s var(--stamp-ease),transform .35s var(--stamp-ease);
}
html.oss-io .oss-stamp[data-io].in-view{transform:rotate(var(--stamp-rot,-2deg)) scale(1)}

/* ---------- Small screens ---------- */
@media (max-width:520px){
  .masthead{font-size:10px;letter-spacing:.14em}
  .pagehead{padding-top:8vh}
  .prose{font-size:17px}
  .prose pre{padding:16px 16px;margin-left:calc(-1 * min(4vw,16px));margin-right:calc(-1 * min(4vw,16px))}
  .oss-term{font-size:11.5px}
  .oss-card-head{flex-wrap:wrap;row-gap:6px}
}