/* ===== Tokens ===== */
:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --text: #1b1c1e;
  --muted: #5d6066;
  --line: #e2e0d9;
  --accent: #1f4e79;      /* drafting blue */
  --accent-2: #c8501e;    /* safety orange, used sparingly */
  --ph: #e9e7e0;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
  --max: 1080px;
  --narrow: 720px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-2); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: var(--narrow); }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { font-weight: 600; color: var(--text); text-decoration: none; letter-spacing: -0.01em; }
.nav { display: flex; gap: 22px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav a:hover, .nav a.active { color: var(--text); }

/* ===== Hero ===== */
.hero { padding-top: 88px; padding-bottom: 56px; }
.hero h1 { font-size: clamp(36px, 6vw, 56px); line-height: 1.05; letter-spacing: -0.03em; margin: 0 0 20px; font-weight: 650; }
.hero .lede { font-size: clamp(19px, 2.4vw, 23px); max-width: 620px; margin: 0 0 18px; line-height: 1.45; }
.hero .meta { color: var(--muted); font-size: 15px; max-width: 620px; margin: 0; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.tag {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.02em;
  border: 1px solid var(--line); background: var(--surface);
  padding: 4px 10px; border-radius: 999px; color: var(--muted);
}
.tag.live { color: var(--accent-2); border-color: color-mix(in srgb, var(--accent-2) 35%, var(--line)); }

/* ===== Section labels ===== */
.section { padding-top: 48px; padding-bottom: 48px; }
.label {
  font-family: var(--mono); font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--muted); margin: 0 0 22px; display: flex; align-items: center; gap: 12px;
}
.label::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* ===== Project grid ===== */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.card { text-decoration: none; color: inherit; display: block; }
.card .thumb { border-radius: 10px; overflow: hidden; aspect-ratio: 4 / 3; background: var(--ph); }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.card:hover .thumb img { transform: scale(1.02); }
.card h3 { margin: 16px 0 2px; font-size: 20px; letter-spacing: -0.01em; }
.card .ctx { color: var(--muted); font-size: 14.5px; margin: 0; }
.card .part { font-size: 15px; margin: 8px 0 0; }
.card .part b { font-weight: 600; }
.card .stat { font-family: var(--mono); font-size: 13px; color: var(--accent); margin-top: 10px; display: inline-block; }
.card:hover h3 { color: var(--accent); }
.card.featured { grid-column: 1 / -1; display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; align-items: center; }
.card.featured .thumb { aspect-ratio: 16 / 10; }
.card.featured h3 { font-size: 28px; margin-top: 0; }

/* ===== Photo placeholder (swap for <img> when photos arrive) ===== */
.ph {
  width: 100%; height: 100%; min-height: 160px; margin: 0;
  display: flex; align-items: center; justify-content: center; text-align: center;
  background:
    repeating-linear-gradient(45deg, transparent 0 14px, rgba(0,0,0,.025) 14px 15px),
    var(--ph);
  color: var(--muted); font-family: var(--mono); font-size: 13px; padding: 16px;
  border-radius: 10px;
}

/* ===== About / contact ===== */
.about { display: grid; grid-template-columns: 220px 1fr; gap: 40px; align-items: start; }
.about .headshot { aspect-ratio: 1; border-radius: 10px; overflow: hidden; }
.about p { margin: 0 0 14px; }
.skills { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
.skills h4 { font-family: var(--mono); font-size: 12.5px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin: 0 0 6px; font-weight: 500; }
.skills p { margin: 0; font-size: 15.5px; }
.contact-list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 12px 28px; }

.site-footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; margin-top: 40px; }

/* ===== Project page ===== */
.back { display: inline-block; margin: 36px 0 0; font-size: 15px; color: var(--muted); text-decoration: none; }
.back:hover { color: var(--text); }
.p-head { padding: 28px 0 32px; }
.p-head h1 { font-size: clamp(32px, 5vw, 46px); line-height: 1.1; letter-spacing: -0.025em; margin: 12px 0 14px; }
.p-head .summary { font-size: 19px; color: var(--text); margin: 0 0 22px; max-width: 680px; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.facts div { padding: 14px 16px 14px 0; }
.facts dt { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.facts dd { margin: 2px 0 0; font-size: 15.5px; }

.hero-media { margin: 8px 0 8px; aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }

.numbers { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; margin: 36px 0 8px; }
.numbers div { background: var(--surface); padding: 18px 20px; }
.numbers .n { font-family: var(--mono); font-size: 28px; font-weight: 500; color: var(--accent); letter-spacing: -0.02em; line-height: 1.1; }
.numbers .l { font-size: 14px; color: var(--muted); margin-top: 6px; line-height: 1.4; }

.prose h2 { font-size: 24px; letter-spacing: -0.015em; margin: 48px 0 12px; }
.prose h3 { font-size: 18px; margin: 28px 0 6px; }
.prose p, .prose li { color: #2b2d31; }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 6px; }

.decision { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 8px; padding: 18px 22px; margin: 18px 0; }
.decision h3 { margin: 0 0 10px; font-size: 17px; }
.decision dl { margin: 0; display: grid; grid-template-columns: 110px 1fr; gap: 6px 16px; }
.decision dt { font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding-top: 3px; }
.decision dd { margin: 0; font-size: 15.5px; }

.figs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 20px 0; }
.figs figure { margin: 0; }
.figs .ph, .figs img { aspect-ratio: 4 / 3; border-radius: 8px; object-fit: cover; }
figcaption { font-size: 13.5px; color: var(--muted); margin-top: 8px; }
figure.wide { grid-column: 1 / -1; }
figure.wide .ph, figure.wide img { aspect-ratio: 16 / 9; }

/* bar chart */
.chart { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 20px 22px; margin: 20px 0; }
.chart h4 { margin: 0 0 14px; font-size: 15px; }
.bar-row { display: grid; grid-template-columns: 130px 1fr 64px; align-items: center; gap: 12px; margin: 10px 0; font-size: 14.5px; }
.bar { height: 22px; background: var(--ph); border-radius: 4px; overflow: hidden; }
.bar span { display: block; height: 100%; background: var(--accent); border-radius: 4px; }
.bar.old span { background: #9aa3ad; }
.bar-row .v { font-family: var(--mono); text-align: right; }
.chart .note { font-size: 13px; color: var(--muted); margin: 12px 0 0; }

.next-proj { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); margin-top: 64px; padding-top: 24px; font-size: 15px; }
.next-proj a { text-decoration: none; }

/* ===== Responsive ===== */
@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .nav { gap: 14px; }
  .nav a { font-size: 14px; }
  .brand { font-size: 15px; }
  .hero { padding-top: 56px; padding-bottom: 32px; }
  .grid, .card.featured, .about, .skills, .figs { grid-template-columns: 1fr; }
  .about .headshot { max-width: 180px; }
  .facts { grid-template-columns: 1fr 1fr; }
  .decision dl { grid-template-columns: 1fr; }
  .decision dt { padding-top: 6px; }
  .bar-row { grid-template-columns: 90px 1fr 54px; }
}