/* ═══════════════════════════════════════════════════════════════════════
   LAB — institutional technical document
   Not a variant of the personal site: a different layout language.
   Conventions borrowed from engineering documentation and radiology:
     · a document-control gate strip above everything
     · numbered index navigation (00–04)
     · an engineering title block in the hero
     · INVERTED bone section bars as dividers (black-on-bone)
     · figure numbering (FIG. 1.1 …), spec-sheet tables, margin annotations
     · the Projects × Platforms matrix rendered as an actual matrix table
   Structure expresses the OXMAN architecture: Position → Process spine,
   Projects × Platforms as navigable structure, branches posed as questions.
   ═══════════════════════════════════════════════════════════════════════ */

body{background:#030303;font-size:14.5px}
:root{--maxw:1280px}

/* ── deploy-gate strip — sits above the nav, cannot be missed ─── */
.gate{
  background:#160907;border-bottom:1px solid var(--hazard-dim);
  color:#E4A79D;font:600 11px/1.5 var(--mono);letter-spacing:.14em;
  text-transform:uppercase;
}
.gate .wrap{display:flex;gap:14px;align-items:center;padding-top:10px;padding-bottom:10px;flex-wrap:wrap}
.gate b{
  color:#0B0504;background:var(--hazard);padding:3px 8px;letter-spacing:.2em;
  white-space:nowrap;
}

/* ── nav — document index bar ─────────────────────────────────── */
.nav{
  position:sticky;top:0;z-index:50;background:rgba(3,3,3,.92);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:stretch;gap:0;min-height:54px;flex-wrap:wrap}
.mark{
  display:flex;align-items:center;gap:10px;text-decoration:none;
  font:600 12px/1 var(--mono);letter-spacing:.3em;white-space:nowrap;
  padding-right:22px;border-right:1px solid var(--line);margin-right:6px;
}
.mark .tick{width:8px;height:8px;background:var(--bone)}
.nav ul{display:flex;gap:0;list-style:none;margin:0 0 0 auto;padding:0;flex-wrap:wrap}
.nav ul a{
  display:flex;align-items:center;gap:8px;height:100%;min-height:54px;
  font:500 var(--t-micro)/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;
  color:var(--dim);text-decoration:none;padding:0 16px;
  border-left:1px solid var(--line-soft);
}
.nav ul a i{font-style:normal;color:var(--faint)}
.nav ul a:hover,.nav ul a:focus-visible{color:var(--bone);background:var(--panel)}
.nav ul a.on{color:var(--bone);background:var(--panel)}

/* ── hero — headline over grid field + engineering title block ── */
.hero{position:relative;border-bottom:1px solid var(--line);overflow:hidden}
.hero .field{ /* faint technical grid across the whole hero */
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background:
    linear-gradient(var(--line-soft) 1px,transparent 1px) 0 0/100% 96px,
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px) 0 0/96px 100%;
  mask-image:linear-gradient(#000 55%,transparent);
  -webkit-mask-image:linear-gradient(#000 55%,transparent);
}
.hero .wrap{position:relative;padding-top:clamp(48px,7vh,84px);padding-bottom:clamp(44px,6vh,72px)}
.hero .lbl{letter-spacing:.32em}
.hero h1{
  font-family:var(--display);font-weight:790;font-stretch:62%;
  font-size:clamp(46px,7.6vw,112px);line-height:.88;text-transform:uppercase;
  letter-spacing:.004em;margin:20px 0 0;max-width:15ch;
}
.hero .lede{margin:28px 0 0;max-width:56ch}

.hero-grid{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:clamp(24px,4vw,56px);align-items:end;
}

/* engineering title block — bordered cell table, the document's ID */
.titleblock{border:1px solid var(--line);background:rgba(3,3,3,.82)}
.titleblock table{width:100%;border-collapse:collapse}
.titleblock td{
  border:1px solid var(--line-soft);padding:9px 12px;vertical-align:top;
  font:400 var(--t-micro)/1.5 var(--mono);letter-spacing:.08em;color:var(--mid);
}
.titleblock td span{
  display:block;font-size:9px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--faint);margin-bottom:4px;
}
.titleblock td b{font-weight:600;color:var(--bone);letter-spacing:.06em}

/* hero image slot below the headline row */
.hero-img{margin-top:clamp(32px,5vh,52px)}
.hero-img .slot{aspect-ratio:16/9}

/* ── inverted section bars — the lab's signature divider ──────── */
.docbar{background:var(--bone);color:#050505}
.docbar .wrap{
  display:flex;align-items:baseline;gap:18px;flex-wrap:wrap;
  padding-top:12px;padding-bottom:12px;
}
.docbar .dno{
  font-family:var(--display);font-weight:780;font-stretch:64%;
  font-size:26px;line-height:1;letter-spacing:.01em;
}
.docbar .dti{
  font:600 13px/1.2 var(--mono);letter-spacing:.3em;text-transform:uppercase;
}
.docbar .dan{
  margin-left:auto;font:400 var(--t-micro)/1.4 var(--mono);letter-spacing:.12em;
  text-transform:uppercase;color:#4A4840;
}

/* ── document sections: content + right margin-annotation rail ── */
.doc{border-bottom:1px solid var(--line)}
.doc>.wrap{
  display:grid;grid-template-columns:minmax(0,1fr) 230px;
  gap:clamp(28px,4vw,64px);
  padding-top:clamp(44px,6vh,72px);padding-bottom:clamp(44px,6vh,72px);
}
.doc>.wrap>*{min-width:0}
.doc-margin{border-left:1px solid var(--line-soft);padding-left:22px}
.mnote{margin:0 0 26px;font:400 var(--t-micro)/1.7 var(--mono);letter-spacing:.05em;color:var(--dim)}
.mnote b{display:block;font-weight:600;color:var(--bone);letter-spacing:.16em;text-transform:uppercase;margin-bottom:5px}

.doc h2{
  font-family:var(--display);font-weight:740;font-stretch:66%;
  font-size:clamp(32px,4.4vw,58px);line-height:.92;text-transform:uppercase;
  margin:0 0 22px;
}

/* ── the three questions — full-width numbered rows ───────────── */
.qs{border-top:1px solid var(--line)}
.q{
  display:grid;grid-template-columns:minmax(64px,110px) minmax(0,1fr) auto;
  gap:clamp(16px,3vw,44px);align-items:center;
  padding:clamp(22px,3.5vh,34px) 0;border-bottom:1px solid var(--line);
  text-decoration:none;transition:background .15s ease;
}
.q:hover,.q:focus-visible{background:var(--panel)}
.q .qn{
  font-family:var(--display);font-weight:730;font-stretch:62%;
  font-size:clamp(38px,5vw,64px);line-height:1;color:transparent;
  -webkit-text-stroke:1px var(--dim);
}
.q:hover .qn{color:var(--bone);-webkit-text-stroke:1px var(--bone)}
.q .qb .lbl{margin-bottom:8px;letter-spacing:.24em}
.q .qb h3{
  font:600 clamp(16px,2vw,21px)/1.35 var(--sans);letter-spacing:-.014em;color:var(--bone);
}
.q .qb p{margin:8px 0 0;color:var(--dim);font-size:13.5px;max-width:56ch}
.q .qa{font:600 18px/1 var(--sans);color:var(--dim)}
.q:hover .qa{color:var(--bone)}

/* ── spec-sheet table ─────────────────────────────────────────── */
.spec-table{width:100%;border-collapse:collapse;border:1px solid var(--line)}
.spec-table th,.spec-table td{
  border:1px solid var(--line-soft);padding:11px 14px;text-align:left;
  font:400 12px/1.6 var(--mono);letter-spacing:.05em;color:var(--mid);
  vertical-align:top;
}
.spec-table th{
  font-weight:600;font-size:var(--t-micro);letter-spacing:.2em;text-transform:uppercase;
  color:var(--dim);background:var(--panel);white-space:nowrap;
}
.spec-table td b{color:var(--bone);font-weight:600}

/* ── figures ──────────────────────────────────────────────────── */
.fig{margin:clamp(28px,4vh,44px) 0}
.fig .slot,.fig .fig-art{border:1px solid var(--line)}
.fig-art{background:var(--near);padding:clamp(14px,2vw,28px)}
.figcap{
  display:flex;gap:14px;align-items:baseline;padding:10px 2px 0;
  font:400 var(--t-micro)/1.65 var(--mono);letter-spacing:.06em;color:var(--dim);
}
.figcap b{font-weight:600;color:var(--bone);letter-spacing:.16em;white-space:nowrap}

/* ── Position → Process spine ─────────────────────────────────── */
.pp{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,3.5vw,56px);margin-top:10px}
.pp>div{border-top:2px solid var(--bone);padding-top:16px}
.pp .lbl{color:var(--bone);letter-spacing:.3em;margin-bottom:14px}
.pp p{color:var(--mid);font-size:14px;line-height:1.7}

/* ── Projects × Platforms matrix ──────────────────────────────── */
.matrix-note{margin:14px 0 0;font:400 var(--t-micro)/1.7 var(--mono);color:var(--faint);letter-spacing:.05em}
.mx-dot{color:var(--bone);font-size:15px}
.mx-nil{color:var(--faint)}
.mx-ph td,.mx-ph th{color:var(--signal)!important;border-style:dashed!important;border-color:rgba(201,180,91,.4)!important}

/* ── contribute ───────────────────────────────────────────────── */
.contrib-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin:30px 0}
.contrib-cols>div{background:#030303;padding:20px 18px}
.contrib-cols .lbl{margin-bottom:10px}
.contrib-cols h3{font:600 15px/1.4 var(--sans);margin:0 0 8px}
.contrib-cols p{color:var(--dim);font-size:13px;margin:0}

/* ── document-control footer ──────────────────────────────────── */
.endmark{
  border-top:1px solid var(--line);
}
.endmark .wrap{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:16px;padding-bottom:16px;
  font:500 var(--t-micro)/1.5 var(--mono);letter-spacing:.18em;
  text-transform:uppercase;color:var(--faint);
}

/* ── responsive ───────────────────────────────────────────────── */
@media(max-width:960px){
  .hero-grid{grid-template-columns:minmax(0,1fr)}
  .titleblock{max-width:520px}
  .doc>.wrap{grid-template-columns:minmax(0,1fr)}
  .doc-margin{
    border-left:0;border-top:1px solid var(--line-soft);padding:22px 0 0;
    display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0 24px;
  }
  .pp{grid-template-columns:1fr}
  .contrib-cols{grid-template-columns:1fr}
}
@media(max-width:680px){
  .q{grid-template-columns:minmax(48px,64px) minmax(0,1fr)}
  .q .qa{display:none}
  .nav ul a{padding:0 10px;min-height:48px}
  .mark{padding-right:12px}
}

/* ── LIGHT MODE — bright clinical white: the printed controlled
   document. Coolest/brightest of the three light grounds, as the lab
   is the darkest of the three dark grounds. The signature INVERSION
   flips the other way: docbars go ink-on-page → page-on-ink, i.e.
   dark bone bars carrying paper text. Red stays the deploy gate. ──── */
:root[data-theme="light"]{
  --black:#FAFAF7;--near:#F3F3EE;
  --panel:#EFEFEA;--panel-2:#EAEAE4;
  --line:#D3D3CC;--line-soft:#E2E2DC;
  --bone:#121110;--bone-hi:#000;
  --mid:#454239;--dim:#575349;--faint:#615E56;
}
[data-theme="light"] body{background:#FAFAF7}
[data-theme="light"] .nav{background:rgba(250,250,247,.92)}
/* gate strip: pale incident red, dark warning text; the DO NOT DEPLOY
   badge keeps the solid hazard fill (white on #A72D1A = 6.9:1)       */
[data-theme="light"] .gate{background:#F6E3DE;border-bottom-color:var(--hazard-dim);color:#7C2415}
[data-theme="light"] .gate b{color:#fff}
/* the inverted section bars — inversion preserved, direction flipped */
[data-theme="light"] .docbar{background:#181713;color:#F4F2ED}
[data-theme="light"] .docbar .dan{color:#ABA79D}
[data-theme="light"] .titleblock{background:rgba(250,250,247,.88)}
[data-theme="light"] .contrib-cols>div{background:#FAFAF7}
[data-theme="light"] .mx-ph td,[data-theme="light"] .mx-ph th{border-color:rgba(122,90,0,.45)!important}

/* ── hero figure — was defined in about-lab.css, which was removed 2026-08-22.
   Restored here because lab.html still uses it.                          ── */
.al-figure{margin-top:clamp(28px,4vw,48px)}
.al-figure img{
  width:100%;height:auto;display:block;
  border:1px solid var(--line);background:var(--panel);
}
.al-figure .figcap{margin-top:10px}