/* ============================================================
   REBOOT project page

   ============================================================ */

:root{
  --bg:        #FFFFFF;   /* white */
  --bg-alt:    #F6F7F8;   /* very light grey band */
  --panel:     #FFFFFF;   /* cards / panels */
  --line:      #E3E5E8;   /* borders */
  --line-soft: #EEF0F2;   /* faint grid / dividers */
  --ink:       #1A1D22;   /* primary text */
  --ink-dim:   #565B63;   /* secondary text */
  --ink-faint: #8A8F97;   /* captions / labels */

  --ok:    #1F9E5A;   /* success lane */
  --bad:   #E0492A;   /* failure/recovery lane */
  --steel: #2F63C7;   /* blueprint accent */

  --ok-glow:  rgba(31,158,90,.10);
  --bad-glow: rgba(224,73,42,.09);

  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --sans: 'Archivo', ui-sans-serif, system-ui, sans-serif;

  --wrap: 1160px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit}
sup{font-size:.62em}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}

/* blueprint grid backdrop */
.grid-bg{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:44px 44px;
  opacity:.7;
  mask-image:radial-gradient(ellipse 90% 60% at 50% 0%,#000 20%,transparent 70%);
}

/* full-width figure on top of a section (blends with paper background) */
.fig.full{margin:0 0 42px}
.fig.full img{width:100%;height:auto;display:block;border-radius:12px;border:none;background:transparent}

/* stacked body prose: full measure + clear spacing between paragraphs */
.prose{max-width:80ch}
.prose p{margin-bottom:1.4em;font-size:1.05rem;line-height:1.7}
.prose p:last-child{margin-bottom:0}

/* ---------- HERO ---------- */
.hero{padding:74px 0 0}
.eyebrow{
  font-family:var(--mono);
  font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-dim);
  display:inline-flex;align-items:center;gap:.6em;
  border:1px solid var(--line);
  padding:.5em .9em;border-radius:100px;
  background:var(--panel);
}
.eyebrow .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 0 3px var(--ok-glow);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

.title{margin:26px 0 0;line-height:.95}
.title-mark{
  display:block;
  font-weight:900;
  font-size:clamp(3.4rem,11vw,8rem);
  letter-spacing:-.03em;
  background:linear-gradient(100deg,var(--ink) 35%,var(--steel));
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.title-sub{
  display:block;
  font-weight:600;
  font-size:clamp(1.1rem,3vw,1.9rem);
  color:var(--ink-dim);
  letter-spacing:-.01em;
  margin-top:.35em;
}
.tagline{margin-top:1em;color:var(--ink-dim);font-size:1.05rem;max-width:640px}

.authors{margin-top:34px;display:flex;flex-wrap:wrap;gap:.4em 1.6em}
.author{
  font-weight:600;text-decoration:none;
  border-bottom:1px solid transparent;
  transition:border-color .2s,color .2s;
}
.author:hover{border-color:var(--steel);color:var(--steel)}
.affil{margin-top:.7em;display:flex;gap:1.4em;color:var(--ink-faint);font-size:.9rem;font-family:var(--mono)}

.links{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}
.pill{
  display:inline-flex;align-items:center;gap:.55em;
  font-family:var(--mono);font-size:.82rem;font-weight:500;letter-spacing:.02em;
  text-decoration:none;
  padding:.72em 1.15em;border-radius:8px;
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--ink);
  transition:transform .18s,border-color .18s,background .18s;
}
.pill:hover{transform:translateY(-2px);border-color:var(--steel);background:#fff;box-shadow:0 4px 14px rgba(26,29,34,.06)}
.pill::before{
  content:"";width:15px;height:15px;
  background:currentColor;opacity:.85;
  -webkit-mask-size:contain;mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;
}
.pill[data-icon="paper"]::before{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/><path d="M14 2v6h6M9 13h6M9 17h6"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"/><path d="M14 2v6h6M9 13h6M9 17h6"/></svg>')}
.pill[data-icon="data"]::before{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><ellipse cx="12" cy="5" rx="9" ry="3"/><path d="M3 5v14a9 3 0 0 0 18 0V5M3 12a9 3 0 0 0 18 0"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><ellipse cx="12" cy="5" rx="9" ry="3"/><path d="M3 5v14a9 3 0 0 0 18 0V5M3 12a9 3 0 0 0 18 0"/></svg>')}
.pill[data-icon="code"]::before{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M16 18l6-6-6-6M8 6l-6 6 6 6"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M16 18l6-6-6-6M8 6l-6 6 6 6"/></svg>')}
.pill[data-icon="viz"]::before{-webkit-mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M3 3v18h18"/><rect x="7" y="10" width="3" height="8"/><rect x="13" y="6" width="3" height="12"/></svg>');mask-image:url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M3 3v18h18"/><rect x="7" y="10" width="3" height="8"/><rect x="13" y="6" width="3" height="12"/></svg>')}

/* teaser (top of hero) */
.teaser{margin-top:56px}
.teaser img{
  width:100%;
  display:block;
  border-radius:0;
  border:none;
  background:transparent;
  height:auto;
}
figcaption{
  margin-top:.9em;color:var(--ink-dim);font-size:.9rem;
  max-width:760px;line-height:1.55;
}

/* ---------- STATS STRIP ---------- */
.stats-strip{margin-top:64px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-alt)}
.stat-row{display:flex;flex-wrap:wrap;gap:0}
.stat{
  flex:1 1 0;min-width:130px;
  padding:30px 8px;text-align:center;
  border-right:1px solid var(--line-soft);
}
.stat:last-child{border-right:none}
.stat .num{
  display:block;font-family:var(--mono);font-weight:700;
  font-size:clamp(1.9rem,4vw,2.7rem);letter-spacing:-.02em;color:var(--ink);
}
.stat .num .pct{color:var(--steel);font-size:.6em}
.stat .lab{display:block;margin-top:.3em;font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint)}

/* ---------- SECTIONS ---------- */
.section{padding:92px 0}
.section.alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-tag{
  font-family:var(--mono);font-size:clamp(1.7rem,4vw,2.7rem);letter-spacing:-.02em;line-height:1.08;max-width:32ch;text-transform:uppercase;
  display:block;margin-bottom:1.1em;
}
h2{
  font-weight:800;font-size:clamp(1.7rem,4vw,2.7rem);
  letter-spacing:-.02em;line-height:1.08;max-width:32ch;
}
.section.alt h2,.section h2{margin-bottom:.7em}
.lead{color:var(--ink-dim);font-size:1.08rem;max-width:78ch;margin-bottom:2.2em}
p{color:var(--ink-dim)}
.section p strong{color:var(--ink);font-weight:600}

.two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start}
.two-col p{margin-bottom:1.1em}
.two-col h2{max-width:none}

.fig img{width:100%;display:block;border-radius:12px;border:1px solid var(--line);background:#fff}
.fig.wide{margin-top:40px}

/* ---------- PIPELINE (signature) ---------- */
.pipeline{
  display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:8px;
}
.phase{
  position:relative;
  border:1px solid var(--line);border-radius:12px;
  background:var(--panel);
  padding:22px 18px 20px;
  overflow:hidden;
  transition:border-color .25s,transform .25s;
  cursor:default;
}
.phase::after{ /* connecting arrow */
  content:"\2192";
  position:absolute;right:-13px;top:34px;
  font-family:var(--mono);color:var(--ink-faint);z-index:2;
  font-size:1.1rem;
}
.phase:last-child::after{display:none}
.phase:hover,.phase:focus-visible{
  border-color:var(--steel);transform:translateY(-4px);outline:none;
  box-shadow:0 10px 26px rgba(26,29,34,.08);
}
.pnum{font-family:var(--mono);font-size:.75rem;color:var(--steel);letter-spacing:.1em}
.pname{display:block;margin-top:.5em;font-weight:700;font-size:1.15rem;letter-spacing:-.01em}
.pname em{font-style:normal;font-weight:400;color:var(--ink-faint);font-size:.82em}
.pdesc{display:block;margin-top:.5em;font-size:.85rem;color:var(--ink-dim);min-height:2.5em}

.lanes{
  margin-top:16px;display:grid;gap:8px;
  max-height:0;opacity:0;
  transition:max-height .35s ease,opacity .3s ease,margin-top .35s ease;
}
.phase:hover .lanes,.phase:focus-visible .lanes{max-height:200px;opacity:1}
.lane{
  font-family:var(--mono);font-size:.72rem;line-height:1.4;
  padding:.6em .7em;border-radius:7px;border-left:3px solid;
}
.lane.ok{background:var(--ok-glow);border-color:var(--ok);color:#15613a}
.lane.bad{background:var(--bad-glow);border-color:var(--bad);color:#9e2f18}

.legend{margin-top:22px;display:flex;flex-wrap:wrap;gap:1.6em;font-size:.85rem;color:var(--ink-dim)}
.legend-item{display:inline-flex;align-items:center;gap:.55em}
.swatch{width:14px;height:14px;border-radius:4px;display:inline-block}
.swatch.ok{background:var(--ok)}
.swatch.bad{background:var(--bad)}

/* ---------- CARDS ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.card{
  border:1px solid var(--line);border-radius:12px;background:var(--panel);
  padding:26px 22px;transition:border-color .2s,transform .2s;
}
.card:hover{border-color:var(--steel);transform:translateY(-3px);box-shadow:0 8px 22px rgba(26,29,34,.07)}
.cnum{font-family:var(--mono);font-size:.8rem;color:var(--steel);letter-spacing:.12em}
.card h3{margin:.7em 0 .5em;font-size:1.12rem;font-weight:700;letter-spacing:-.01em}
.card p{font-size:.92rem;line-height:1.55}

/* ---------- TABLES ---------- */
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin-top:8px}
table.spec{width:100%;border-collapse:collapse;font-size:.92rem;min-width:560px}
table.spec th,table.spec td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line-soft)}
table.spec thead th{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-faint);background:var(--bg-alt);
}
table.spec tbody tr:last-child td{border-bottom:none}
table.spec tbody tr:hover td{background:rgba(47,99,199,.05)}
.spec .r{text-align:right}
.spec .mono{font-family:var(--mono);color:var(--ink)}

.tag{
  font-family:var(--mono);font-size:.72rem;font-weight:500;
  padding:.2em .6em;border-radius:5px;border:1px solid;
}
.tag.cont{color:var(--ok);border-color:rgba(31,158,90,.4);background:var(--ok-glow)}
.tag.c2{color:var(--bad);border-color:rgba(224,73,42,.4);background:var(--bad-glow)}
.tag.c1{color:var(--steel);border-color:rgba(47,99,199,.4);background:rgba(47,99,199,.10)}

/* ---------- VIDEO GRID ---------- */
.video-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.vid{position:relative}
.vid video{width:100%;display:block;border-radius:12px;border:1px solid var(--line);background:var(--bg-alt);aspect-ratio:16/10;object-fit:cover}
.vtag{
  position:absolute;top:12px;left:12px;z-index:2;
  font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;
  padding:.35em .7em;border-radius:6px;font-weight:500;backdrop-filter:blur(4px);
}
.vtag.ok{background:#eafaf1;color:#15613a;border:1px solid var(--ok)}
.vtag.bad{background:#fdece7;color:#9e2f18;border:1px solid var(--bad)}
.note{margin-top:16px;font-size:.8rem;color:var(--ink-faint)}
.note code{background:var(--panel);padding:.15em .45em;border-radius:5px;border:1px solid var(--line)}

/* ---------- FINDINGS ---------- */
.findings{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.finding{border:1px solid var(--line);border-radius:12px;background:var(--panel);padding:26px 22px}
.fstat{display:block;font-size:2rem;font-weight:700;color:var(--ink);letter-spacing:-.02em;margin-bottom:.5em}
.fstat .pct{color:var(--steel);font-size:.6em}
.finding p{font-size:.92rem;line-height:1.5}

/* ---------- BIBTEX ---------- */
.bibtex{position:relative;border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow:hidden}
.bibtex pre{padding:26px 24px;overflow-x:auto}
.bibtex code{font-family:var(--mono);font-size:.85rem;line-height:1.7;color:var(--ink)}
.copy{
  position:absolute;top:14px;right:14px;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  padding:.5em .9em;border-radius:7px;
  border:1px solid var(--line);background:var(--bg-alt);color:var(--ink-dim);
  cursor:pointer;transition:border-color .2s,color .2s;
}
.copy:hover{border-color:var(--steel);color:var(--steel)}
.copy.done{border-color:var(--ok);color:var(--ok)}

/* ---------- FOOTER ---------- */
.foot{padding:48px 0;border-top:1px solid var(--line);background:var(--bg-alt)}
.foot p{font-size:.9rem}
.foot a{color:var(--steel);text-decoration:none;border-bottom:1px solid transparent}
.foot a:hover{border-color:var(--steel)}
.foot .muted{margin-top:.5em;font-size:.78rem;color:var(--ink-faint)}
.mono{font-family:var(--mono)}

/* reveal on scroll */
.section{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.section.in{opacity:1;transform:none}

/* ---------- RESPONSIVE ---------- */
@media (max-width:900px){
  .two-col{grid-template-columns:1fr;gap:36px}
  .pipeline{grid-template-columns:1fr 1fr}
  .phase::after{display:none}
  .lanes{max-height:200px;opacity:1;margin-top:16px} /* always open on touch */
}
@media (max-width:560px){
  body{font-size:16px}
  .section{padding:64px 0}
  .video-grid{grid-template-columns:1fr}
  .pipeline{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line-soft);flex:1 1 100%}
}

/* accessibility */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .section{opacity:1;transform:none}
}
:focus-visible{outline:2px solid var(--steel);outline-offset:3px;border-radius:4px}