/* ============ Braitoli Research — VTON Dossier ============ */
/* Design: fashion-tech dossier. Display serif (Petrona) for editorial
   authority, grotesk (Manrope) for body/UI, mono (Space Mono) for
   data/specs. Warm bone paper, near-black ink, terracotta-rose accent —
   deliberately not "AI purple" or generic dark-mode acid green. */

:root {
  --paper: #F2EFEA;
  --paper-raised: #FFFFFF;
  --ink: #1C1B1F;
  --ink-soft: #5B5750;
  --ink-faint: #8A8479;
  --line: #DDD8CE;
  --line-strong: #C7C1B4;
  --accent: #C4443A;
  --accent-deep: #8F2F27;
  --accent-bg: #F6E3DF;
  --good: #3F6E52;
  --good-bg: #E6EFE7;
  --warn: #96691E;
  --warn-bg: #F4EBD8;
  --bad: #A23A34;
  --bad-bg: #F6E1DE;
  --radius: 4px;
  --maxw: 1080px;
  --serif: 'Petrona', Georgia, serif;
  --sans: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'Space Mono', 'IBM Plex Mono', monospace;
}

:root[data-theme="dark"] {
  --paper: #17161A;
  --paper-raised: #201F24;
  --ink: #EDEAE3;
  --ink-soft: #B4AEA2;
  --ink-faint: #7C766B;
  --line: #34322F;
  --line-strong: #47443E;
  --accent: #E2685D;
  --accent-deep: #F2897D;
  --accent-bg: #3A211E;
  --good: #7FB893;
  --good-bg: #1E2C22;
  --warn: #D3A653;
  --warn-bg: #2E2818;
  --bad: #E17A72;
  --bad-bg: #362320;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #17161A;
    --paper-raised: #201F24;
    --ink: #EDEAE3;
    --ink-soft: #B4AEA2;
    --ink-faint: #7C766B;
    --line: #34322F;
    --line-strong: #47443E;
    --accent: #E2685D;
    --accent-deep: #F2897D;
    --accent-bg: #3A211E;
    --good: #7FB893;
    --good-bg: #1E2C22;
    --warn: #D3A653;
    --warn-bg: #2E2818;
    --bad: #E17A72;
    --bad-bg: #362320;
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  transition: background .25s ease, color .25s ease;
}

a { color: var(--accent-deep); text-decoration-thickness: 1px; }
a:hover { color: var(--accent); }
a:focus-visible, button:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

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

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-in {
  max-width: var(--maxw); margin: 0 auto; padding: 14px 28px;
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
}
.brand {
  font-family: var(--serif); font-weight: 600; font-style: italic;
  font-size: 18px; color: var(--ink); text-decoration: none; letter-spacing: .01em;
}
.brand b { font-style: normal; font-weight: 700; }
.crumb {
  font-family: var(--mono); font-size: 11px; letter-spacing: .06em;
  text-transform: uppercase; color: var(--ink-faint);
}
.topnav { display: flex; gap: 2px; flex-wrap: wrap; margin-left: auto; }
.topnav a {
  font-family: var(--mono); font-size: 11.5px; font-weight: 700; letter-spacing: .03em;
  text-decoration: none; color: var(--ink-soft);
  padding: 6px 11px; border-radius: 99px; text-transform: uppercase;
}
.topnav a:hover { background: var(--paper-raised); color: var(--accent-deep); }
.topnav a.current { background: var(--ink); color: var(--paper); }
.theme-toggle {
  border: 1.5px solid var(--line-strong); background: var(--paper-raised);
  color: var(--ink-soft); font-family: var(--mono); font-size: 11px;
  padding: 6px 10px; border-radius: 99px; cursor: pointer; letter-spacing: .04em;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent-deep); }

/* ---------- hero ---------- */
header.hero { padding: 64px 0 52px; border-bottom: 1px solid var(--line); }
.eyebrow {
  font-family: var(--mono); font-size: 11.5px; font-weight: 700;
  letter-spacing: .14em; text-transform: uppercase; color: var(--accent-deep);
  display: flex; align-items: center; gap: 10px; margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 30px; height: 1.5px; background: var(--accent); }
h1 {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(36px, 5.6vw, 62px); line-height: 1.05; letter-spacing: -.01em;
  margin-bottom: 20px; text-wrap: balance;
}
h1 em { font-style: italic; color: var(--accent-deep); font-weight: 500; }
.dek { font-size: 18px; color: var(--ink-soft); max-width: 62ch; margin-bottom: 26px; }
.meta-row {
  display: flex; gap: 22px; flex-wrap: wrap; font-family: var(--mono);
  font-size: 12px; color: var(--ink-faint); letter-spacing: .02em;
}
.meta-row b { color: var(--ink-soft); font-weight: 700; }

/* ---------- section scaffolding ---------- */
section { padding: 56px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }
.sec-head { margin-bottom: 30px; }
.sec-eyebrow {
  font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: .1em;
  color: var(--ink-faint); text-transform: uppercase; margin-bottom: 8px; display: block;
}
h2 {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(26px, 3.4vw, 36px); letter-spacing: -.005em; text-wrap: balance;
}
.sec-lede { color: var(--ink-soft); max-width: 68ch; margin-top: 12px; font-size: 16px; }
.sec-lede strong { color: var(--ink); }
h3 { font-family: var(--serif); font-weight: 700; font-size: 21px; margin-bottom: 6px; }
p { max-width: 68ch; }
p + p { margin-top: 12px; }

/* ---------- exhibit card (competitor spread) ---------- */
.exhibit {
  display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.3fr);
  gap: 40px; align-items: start; margin-bottom: 52px;
}
.exhibit:last-child { margin-bottom: 0; }
.exhibit-frame {
  background: var(--paper-raised); border: 1px solid var(--line-strong);
  border-radius: var(--radius); overflow: hidden; position: relative;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.exhibit-frame img { display: block; width: 100%; height: auto; }
.exhibit-frame figcaption {
  font-family: var(--mono); font-size: 11px; color: var(--ink-faint);
  padding: 9px 13px; border-top: 1px solid var(--line); letter-spacing: .02em;
}
.exhibit-body .tag-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.tag {
  font-family: var(--mono); font-size: 10.5px; font-weight: 700; letter-spacing: .05em;
  text-transform: uppercase; padding: 4px 10px; border-radius: 99px;
  border: 1px solid currentColor;
}
.tag.good { color: var(--good); background: var(--good-bg); border-color: var(--good); }
.tag.warn { color: var(--warn); background: var(--warn-bg); border-color: var(--warn); }
.tag.bad { color: var(--bad); background: var(--bad-bg); border-color: var(--bad); }
.tag.neutral { color: var(--ink-soft); background: var(--paper-raised); border-color: var(--line-strong); }

.spec-list { margin-top: 16px; border-top: 1px dashed var(--line-strong); }
.spec-list > div {
  display: flex; justify-content: space-between; gap: 14px;
  padding: 9px 0; border-bottom: 1px dashed var(--line);
  font-size: 14px;
}
.spec-list dt { color: var(--ink-faint); flex-shrink: 0; }
.spec-list dd {
  font-family: var(--mono); font-weight: 700; text-align: right; color: var(--ink);
}

.quote-block {
  margin-top: 18px; padding: 14px 18px; border-left: 2.5px solid var(--accent);
  background: var(--accent-bg); border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14.5px; color: var(--ink-soft);
}
.quote-block b { color: var(--ink); }

@media (max-width: 860px) {
  .exhibit { grid-template-columns: 1fr; }
  .exhibit-frame img { max-width: 340px; margin: 0 auto; display: block; }
}

/* ---------- callout ---------- */
.callout {
  background: var(--accent-bg); border: 1px solid var(--accent);
  border-radius: var(--radius); padding: 20px 24px; margin: 28px 0;
}
.callout .stamp {
  font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--accent-deep); display: block; margin-bottom: 8px;
}
.callout p { font-size: 15px; color: var(--ink); max-width: none; }

/* ---------- refuted-claims strip ---------- */
.refuted-list { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.refuted-item {
  display: flex; gap: 12px; align-items: baseline; padding: 10px 14px;
  background: var(--paper-raised); border: 1px solid var(--line); border-radius: var(--radius);
  font-size: 14px;
}
.refuted-item .x {
  font-family: var(--mono); color: var(--bad); font-weight: 700; flex-shrink: 0;
}
.refuted-item span.claim { color: var(--ink-soft); }

/* ---------- opportunity grid ---------- */
.opp-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.opp {
  background: var(--paper-raised); border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: 22px 22px 20px; position: relative;
}
.opp .n {
  font-family: var(--serif); font-style: italic; font-weight: 600;
  font-size: 15px; color: var(--accent-deep); margin-bottom: 8px; display: block;
}
.opp p { font-size: 14.5px; color: var(--ink-soft); }

/* ---------- comparison table ---------- */
.table-wrap { overflow-x: auto; margin-top: 8px; }
table { border-collapse: collapse; width: 100%; min-width: 720px; font-size: 14px; }
thead th {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: .06em; text-transform: uppercase;
  color: var(--ink-faint); text-align: left; padding: 10px 14px; border-bottom: 2px solid var(--ink);
}
tbody td { padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr:hover { background: var(--paper-raised); }
tbody td:first-child { font-weight: 700; font-family: var(--serif); font-size: 15px; }

/* ---------- doc links / footer nav ---------- */
.doc-links { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 18px; }
.doc-link {
  display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12.5px;
  font-weight: 700; text-decoration: none; color: var(--ink); border: 1.5px solid var(--ink);
  padding: 10px 16px; border-radius: 99px; letter-spacing: .02em;
}
.doc-link:hover { background: var(--ink); color: var(--paper); }
.doc-link .arr { color: var(--accent); }
.doc-link:hover .arr { color: var(--paper); }

.page-nav {
  display: flex; justify-content: space-between; gap: 20px; padding: 40px 0 60px;
  font-family: var(--mono); font-size: 13px;
}
.page-nav a {
  text-decoration: none; color: var(--ink-soft); border: 1px solid var(--line-strong);
  padding: 12px 18px; border-radius: var(--radius); flex: 1; max-width: 340px;
}
.page-nav a:hover { border-color: var(--accent); color: var(--accent-deep); }
.page-nav .lbl { display: block; font-size: 10px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-faint); margin-bottom: 4px; }
.page-nav .next { text-align: right; margin-left: auto; }

footer {
  padding: 40px 0 60px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- index / cover page specific ---------- */
.cover-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px; margin-top: 8px;
}
.cover-card {
  background: var(--paper-raised); border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: 26px 24px; text-decoration: none;
  color: var(--ink); display: block; transition: transform .2s ease, border-color .2s ease;
  position: relative;
}
.cover-card:hover { transform: translateY(-3px); border-color: var(--accent); }
.cover-card .idx {
  font-family: var(--mono); font-size: 11px; color: var(--accent-deep);
  letter-spacing: .08em; margin-bottom: 10px; display: block;
}
.cover-card h3 { margin-bottom: 8px; }
.cover-card p { font-size: 14px; color: var(--ink-soft); max-width: none; }

@media (max-width: 560px) {
  section { padding: 44px 0; }
  header.hero { padding: 48px 0 40px; }
  .exhibit { gap: 24px; }
}