/* ==========================================================================
   detail.css — project_*.html / research_*.html / app_*.html
   (TOC, breadcrumb, head, meta strip, numbered sections, callouts,
    diagrams, charts, evidence, artifacts, pager)
   Loaded INSTEAD of pages.css on detail pages.
   No colour literals: tokens.css only.
   ========================================================================== */

.detail-wrap{
  display:grid;grid-template-columns:220px 1fr;gap:var(--gap-lg);
  padding:26px var(--pad-x) 40px;
}
.detail-body{min-width:0}

/* --- table of contents ---------------------------------------------------- */
.toc{position:sticky;top:var(--toc-top);align-self:start;border-right:1px solid var(--line);padding-right:16px}
.toc .toc-label{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--slate);padding:0 10px 8px;
}
.toc a{
  display:block;padding:8px 10px 8px 23px;color:var(--slate);font-size:13px;
  border-left:3px solid transparent;margin-left:-16px;
  transition:color var(--t),border-color var(--t),background-color var(--t);
}
.toc a:hover{color:var(--navy);border-color:var(--blue);background:var(--tint)}
.toc a.is-active{color:var(--navy);border-color:var(--blue);background:var(--tint);font-weight:600}
.toc a .n{font-family:var(--mono);font-size:11px;margin-right:8px;color:var(--blue)}
.toc .back{
  margin:18px 0 0;padding:14px 10px 0;border-top:1px solid var(--line);
  border-left:0;font-weight:700;color:var(--blue);
}
.toc .back:hover{background:none}

/* --- breadcrumb ----------------------------------------------------------- */
.crumb{font-family:var(--mono);font-size:12px;color:var(--slate);margin-bottom:12px}
.crumb a{transition:color var(--t)}
.crumb a:hover{color:var(--blue)}
.crumb .sep{padding:0 4px}

/* --- head ----------------------------------------------------------------- */
.detail-head .badges{
  display:flex;gap:8px;align-items:center;flex-wrap:wrap;
  font-family:var(--mono);font-size:12px;color:var(--slate);
}
.detail-title{font-size:34px;line-height:1.15;letter-spacing:-.035em;margin:12px 0 8px}
.detail-desc{color:var(--slate);max-width:44em;margin:0 0 14px;font-size:15.5px}

/* --- meta strip ----------------------------------------------------------- */
.meta{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;
  margin:22px 0 6px;padding:16px 18px;
  border:1px solid var(--line);border-radius:var(--r-box);background:var(--tint);
}
.meta div span{
  display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--slate);margin-bottom:4px;
}
.meta div b{font-size:14px;color:var(--navy);font-weight:700;font-family:var(--display)}
.meta .links a{
  display:inline-flex;align-items:center;gap:5px;color:var(--blue);
  font-weight:700;font-size:13px;margin:0 12px 4px 0;
}
.meta .links a:hover{text-decoration:underline}
.meta .links svg{width:14px;height:14px;flex:none}

/* --- sections ------------------------------------------------------------- */
.detail-section{
  scroll-margin-top:var(--anchor-offset);
  padding:28px 0;border-top:1px solid var(--line);max-width:780px;
}
.detail-section:first-of-type{border-top:0}
.detail-section h2{
  font-size:21px;letter-spacing:-.02em;margin-bottom:10px;
  display:flex;align-items:baseline;gap:12px;
}
.detail-section h2 .num{font-family:var(--mono);font-size:12px;color:var(--blue);font-weight:600}
.detail-section p{margin:0 0 10px;max-width:65em}
.detail-section li{margin-bottom:8px}
.detail-section li b{color:var(--navy)}

/* --- callouts ------------------------------------------------------------- */
.question{
  margin:16px 0 0;background:var(--blue-soft);border-left:4px solid var(--blue);
  border-radius:var(--r-btn);padding:14px 18px;
}
.question small{
  display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--blue);margin-bottom:4px;
}
.question b{font-family:var(--display);font-size:17px;color:var(--navy)}
.takeaway{
  margin-top:14px;background:var(--tint);border:1px solid var(--line);
  border-radius:var(--r-box);padding:16px 18px;
}
.takeaway b{display:block;color:var(--navy);font-family:var(--display);margin-bottom:4px}
.case{display:grid;grid-template-columns:110px 1fr;gap:8px 14px;margin-top:12px;font-size:14px}
.case > span{
  font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--blue);padding-top:3px;
}

/* --- flow / findings ------------------------------------------------------ */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:14px}
.flow .step{
  border:1px solid var(--line);border-radius:var(--r-btn);padding:12px 10px;
  background:var(--tint);font-size:12.5px;color:var(--slate);position:relative;
}
.flow .step b{display:block;color:var(--navy);font-family:var(--display);font-size:13px;margin-bottom:4px}
.flow .step i{
  position:absolute;top:8px;right:9px;font-style:normal;
  font-family:var(--mono);font-size:10px;color:var(--blue);
}
.findings{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}
.finding{border:1px solid var(--line);border-radius:var(--r-btn);padding:14px;background:var(--paper)}
.finding .k{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--blue);margin-bottom:6px;
}
.finding p{margin:0;font-size:13.5px}

/* --- results / charts ----------------------------------------------------- */
.results{display:grid;grid-template-columns:1.3fr .7fr;gap:14px;margin-top:14px}
.chartbox{border:1px solid var(--line);border-radius:var(--r-box);padding:14px 14px 8px;background:var(--paper)}
.chartbox h4{font-size:13px;color:var(--slate);font-weight:600;margin-bottom:8px;font-family:var(--display)}
.chartbox svg{width:100%;height:auto;display:block}
.chartbox .metric-value{
  font-family:var(--mono);font-size:40px;font-weight:600;color:var(--blue);
  letter-spacing:-.02em;line-height:1;padding:10px 0 4px;
}
.chartbox .metric-caption{font-size:13px;color:var(--slate)}
.stats{display:flex;flex-direction:column;gap:10px}
.stat{border:1px solid var(--line);border-radius:var(--r-btn);padding:12px 14px;background:var(--tint)}
.stat .v{
  font-family:var(--mono);font-size:24px;font-weight:600;color:var(--navy);
  line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.stat .l{font-size:12px;color:var(--slate);margin-top:5px}

/* --- figures -------------------------------------------------------------- */
figure{margin:0}
figure.hero-illus{
  position:relative;margin:22px 0 0;aspect-ratio:3/1;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r-box);
  background:linear-gradient(150deg,var(--tint),var(--blue-soft));
}
figure.hero-illus::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),
                   linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:28px 28px;opacity:.45;
}
figure.hero-illus svg{position:relative;display:block;width:100%;height:100%}

figure.diagram{
  margin:16px 0 0;border:1px solid var(--line);border-radius:var(--r-box);
  padding:14px;background:var(--paper);
}
/* No forced aspect-ratio here: the scene's own viewBox gives the <svg> an
   intrinsic ratio (08 §4 allows 240–360px tall diagrams). min-height reserves
   space for the moment before Illus.render() runs. */
figure.diagram{min-height:120px}
figure.diagram svg{display:block;width:100%;height:auto}
figure.diagram figcaption,figure.evidence figcaption{
  font-size:13px;color:var(--slate);margin-top:10px;line-height:1.55;
}
figure.evidence{
  margin:16px 0 0;border:1px solid var(--line);border-radius:var(--r-box);
  padding:14px;background:var(--paper);
}
figure.evidence img{display:block;width:100%;height:auto;border-radius:var(--r-btn);background:var(--tint)}

/* --- app pages: screenshots, highlights, stat row (05 §3a) ---------------- */
.shots{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:14px}
.shots figure.evidence{margin:0;grid-column:span 6}
.shots figure.evidence.half{grid-column:span 3}
.shots figure.evidence.phone{grid-column:span 2;padding:10px}
.shots figure.evidence.phone img{border-radius:var(--r-btn);border:1px solid var(--line)}
.shots figure.evidence.phone figcaption{font-size:12px;margin-top:8px}
figure.evidence a.zoom{display:block;cursor:zoom-in}
.highlights{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.highlight{border:1px solid var(--line);border-radius:var(--r-btn);padding:14px 16px;background:var(--paper)}
.highlight b{display:block;color:var(--navy);font-family:var(--display);font-size:14.5px;margin-bottom:6px;line-height:1.35}
.highlight p{margin:0;font-size:13.5px;line-height:1.6}
.statrow{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:14px 0}

/* --- artifacts / pager ---------------------------------------------------- */
.artifacts{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.artifacts .btn svg{width:15px;height:15px}
.refs{margin:0;padding-left:20px;font-size:13.5px;color:var(--slate)}
.refs li{margin-bottom:8px}

.pager{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;
  margin-top:30px;padding-top:22px;border-top:1px solid var(--line);max-width:780px;
}
.pager a{
  border:1px solid var(--line);border-radius:var(--r-box);padding:14px 16px;
  display:flex;flex-direction:column;gap:4px;
  transition:border-color var(--t),transform var(--t);
}
.pager a:hover{border-color:var(--blue);transform:translateY(-1px)}
.pager a span{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--slate);
}
.pager a b{color:var(--navy);font-family:var(--display);font-size:14px}
.pager a.next{text-align:right;align-items:flex-end}

/* --- breakpoints ---------------------------------------------------------- */
@media (max-width:960px){
  .detail-wrap{grid-template-columns:1fr;gap:0}
  .toc{
    position:static;border-right:0;border-bottom:1px solid var(--line);
    padding:0 0 10px;display:flex;gap:4px;overflow:auto;margin-bottom:6px;
    scrollbar-width:none;
  }
  .toc::-webkit-scrollbar{display:none}
  .toc .toc-label,.toc .back{display:none}
  .toc a{white-space:nowrap;margin:0;padding:8px 10px;border-left:0;border-bottom:2px solid transparent}
  .toc a.is-active{border-bottom-color:var(--blue)}
  .results,.findings,.highlights{grid-template-columns:1fr}
  .shots figure.evidence.half{grid-column:span 6}
  .flow{grid-template-columns:1fr 1fr}
  .detail-title{font-size:28px}
  figure.hero-illus{aspect-ratio:2.4/1}
}
@media (max-width:600px){
  .meta,.findings,.pager,.flow{grid-template-columns:1fr}
  .shots figure.evidence.phone{grid-column:span 3}
  .case{grid-template-columns:1fr;gap:2px 0}
  .case > span{padding-top:8px}
  .pager a.next{text-align:left;align-items:flex-start}
  figure.hero-illus{aspect-ratio:2/1}
}