/* graph-site — visual language borrowed from Archify: serif display, mono meta,
   hairline rules, warm paper, one accent. No frameworks, no external fonts. */

:root {
  --paper: #fbfaf6;
  --sunk: #f3f1ea;
  --ink: #17181a;
  --muted: #6b6a66;
  --rule: #e4e0d6;
  --rule-strong: #cfcabc;
  --accent: #d8480f;
  --accent-soft: #fdf0e9;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(23, 24, 26, .05), 0 8px 24px rgba(23, 24, 26, .05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1113;
    --sunk: #16191c;
    --ink: #ecebe6;
    --muted: #9c9a93;
    --rule: #262a2e;
    --rule-strong: #363b41;
    --accent: #ff6a2a;
    --accent-soft: #1d1410;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 30px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.mono { font-family: var(--mono); font-size: 12.5px; letter-spacing: .01em; }

/* — masthead — */
.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 22px clamp(20px, 5vw, 64px) 18px;
  border-bottom: 1px solid var(--rule);
}
.wordmark {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: -.01em;
}
.wordmark span { color: var(--muted); }
.tagline {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}

main { flex: 1 0 auto; padding: clamp(28px, 5vw, 56px) clamp(20px, 5vw, 64px) 64px; max-width: 1440px; }

/* — lede — */
.lede { max-width: 62ch; margin-bottom: 40px; }
.lede h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin: 0 0 12px;
}
.lede p { margin: 0; color: var(--muted); font-size: 17px; max-width: 54ch; }

.crumbs { margin-bottom: 26px; color: var(--muted); }
.crumbs a { border-bottom: 1px solid var(--rule-strong); padding-bottom: 1px; }
.crumbs a:hover { color: var(--accent); border-color: var(--accent); }

/* — project cards — */
.grid { display: grid; gap: 22px; }
.grid.projects { grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); }

.project-cover {
  display: block;
  height: var(--fit-height, 208px);
  overflow: hidden;
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
  position: relative;
}
.project-cover iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 1280px;
  height: 800px;
  border: 0;
  transform: scale(var(--fit-scale, .26));
  transform-origin: top left;
  pointer-events: none;
  background: #fff;
}
.project-body { display: flex; flex-direction: column; gap: 8px; padding: 20px 22px 18px; }
.project-index { color: var(--muted); opacity: .7; letter-spacing: .14em; }

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  overflow: hidden;
  background: var(--sunk);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.project-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  border-radius: var(--radius) 0 0 var(--radius);
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .18s ease;
}
.project-card:hover { transform: translateY(-2px); border-color: var(--rule-strong); box-shadow: var(--shadow); }
.project-card:hover::before { transform: scaleY(1); }
.project-card h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 26px;
  letter-spacing: -.01em;
  margin: 0;
}
.project-card p { margin: 0; color: var(--muted); font-size: 15px; }
.project-count { color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.project-foot {
  margin-top: 4px;
  display: flex;
  gap: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
}
.project-go {
  color: var(--accent);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity .18s ease, transform .18s ease;
}
.project-card:hover .project-go { opacity: 1; transform: translateX(0); }

/* — diagram cards with live thumbnails — */
.grid.diagrams { grid-template-columns: repeat(auto-fill, 460px); align-items: start; }

.diagram-card { margin: 0; display: flex; flex-direction: column; gap: 12px; }

.thumb {
  position: relative;
  display: block;
  overflow: hidden;
  height: var(--fit-height, 288px);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--sunk);
  box-shadow: var(--shadow);
  transition: border-color .18s ease, transform .18s ease;
}
.thumb iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 1280px;
  height: 800px;
  border: 0;
  transform: scale(var(--fit-scale, .3594));
  transform-origin: top left;
  pointer-events: none;
  background: #fff;
}
.thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 62%, rgba(0,0,0,.10));
  pointer-events: none;
}
.thumb:hover { border-color: var(--accent); transform: translateY(-2px); }
.thumb-open {
  position: absolute;
  right: 10px;
  bottom: 10px;
  z-index: 2;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  color: var(--muted);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .18s ease, transform .18s ease;
}
.thumb:hover .thumb-open { opacity: 1; transform: translateY(0); }

.diagram-card h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 20px;
  line-height: 1.25;
  margin: 0;
}
.diagram-card .desc { margin: 0; color: var(--muted); font-size: 14.5px; }
.diagram-card .meta {
  margin: 2px 0 0;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .07em;
  font-size: 11.5px;
}

.empty {
  margin: 0;
  padding: 26px;
  border: 1px dashed var(--rule-strong);
  border-radius: var(--radius);
  color: var(--muted);
}
.empty code { font-family: var(--mono); font-size: 13px; }

/* — colophon — */
.colophon {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding: 20px clamp(20px, 5vw, 64px) 40px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 13px;
}
.colophon p { margin: 0; }

@media (max-width: 560px) {
  .grid.projects, .grid.diagrams { grid-template-columns: 1fr; }
}