/* "Survey" theme: field-sheet grey, ink, hairline ledgers, mono labels.
   One highlighter yellow (marks only) and one survey blue (data + links). Contours on the home page are drawn from real elevation data. */
/* Fonts are preloaded via _headers; "fallback" waits ~100ms for them before using system fonts, so a normal load never swaps visibly. */
@font-face { font-family: "Archivo"; src: url("/fonts/archivo-v2.woff2") format("woff2"); font-weight: 400 600; font-stretch: 70% 100%; font-display: fallback; }
@font-face { font-family: "Plex Mono"; src: url("/fonts/plexmono-400.woff2") format("woff2"); font-weight: 400; font-display: fallback; }
@font-face { font-family: "Plex Mono"; src: url("/fonts/plexmono-500.woff2") format("woff2"); font-weight: 500; font-display: fallback; }
:root {
  --bg: #f1f1ef;
  --surface: #ffffff;
  --ink: #111111;
  --muted: #62655f;
  --line: #d5d7d2;
  --accent: #1f55c8;
  --mark: #ffe500;
  --sans: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  color-scheme: light dark;
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e0f0f; --surface: #171818; --ink: #ecece9; --muted: #92958f; --line: #2a2c2a; --accent: #84a6ff; }
}
* { box-sizing: border-box; }
::selection { background: var(--mark); color: #111; }
body { margin: 0; background: var(--bg); color: var(--ink); }
.site, footer, .home main { max-width: 64rem; margin: 0 auto; padding: 0 1.5rem; }
main { max-width: 46rem; margin: 0 auto; padding: 0 1.5rem; }

/* Header: name left, mono nav right, ruled underneath. */
.site { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; justify-content: space-between; align-items: baseline; padding-top: 1.25rem; padding-bottom: 1.25rem; border-bottom: 1px solid var(--line); max-width: none; }
.site .name { font-weight: 600; font-size: 0.95rem; letter-spacing: -0.01em; text-decoration: none; color: var(--ink); }
.site nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; font: 400 0.75rem/1.6 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; }
h1 { font-size: clamp(2.2rem, 5.5vw, 3.1rem); line-height: 1.05; letter-spacing: -0.028em; margin: 0.75rem 0 1.25rem; text-wrap: balance; }

h1, h2, h3 { font-family: var(--sans); font-weight: 600; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5.5vw, 3.1rem); line-height: 1.05; letter-spacing: -0.035em; margin: 0.75rem 0 1.25rem; text-wrap: balance; }
h2 { font-size: 1.6rem; line-height: 1.15; margin: 3.5rem 0 1rem; }
h3 { font-size: 1.05rem; margin: 1.75rem 0 0.25rem; letter-spacing: -0.01em; }
p, ul, ol, dl { margin: 0 0 1rem; }
ul, ol { padding-left: 1.25rem; }
li + li { margin-top: 0.35rem; }
.lede { font-size: clamp(1.15rem, 2.4vw, 1.35rem); line-height: 1.45; letter-spacing: -0.01em; text-wrap: pretty; }
.muted, figcaption { color: var(--muted); }
.eyebrow, .meta { font: 400 0.75rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); margin: 2.5rem 0 0; }
mark { background: var(--mark); color: #111; padding: 0 0.12em; box-decoration-break: clone; -webkit-box-decoration-break: clone; }
strong, b { font-weight: 600; }
hr { border: 0; border-top: 1px solid var(--line); margin: 3rem 0; }
code { font: 0.86em var(--mono); }

a { color: inherit; text-decoration-color: color-mix(in srgb, currentColor 35%, transparent); text-decoration-thickness: 1px; text-underline-offset: 3px; transition: color 150ms ease, text-decoration-color 150ms ease; }
a[href^="http"]::after { content: "\2009↗"; font-size: 0.8em; opacity: 0.6; }
.card[href^="http"]::after, .nofollow::after { content: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Standout results: big condensed numerals in a ruled strip, mono labels. */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); margin: 2rem 0; border-block: 1px solid var(--ink); }
.stats div { display: flex; flex-direction: column; padding: 1rem 1rem 1.1rem 0; }
.stats div + div { border-left: 1px solid var(--line); padding-left: 1rem; }
.stats b { font-size: clamp(2.2rem, 5vw, 2.9rem); font-weight: 600; font-stretch: 75%; line-height: 1; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.stats span { font: 400 0.72rem/1.45 var(--mono); color: var(--muted); margin-top: 0.6rem; }

/* Key facts: hairline key/value table. */
.facts { display: grid; grid-template-columns: 7rem 1fr; font-size: 0.92rem; border-top: 1px solid var(--line); }
.facts dt, .facts dd { padding: 0.55rem 0; border-bottom: 1px solid var(--line); margin: 0; }
.facts dt { font: 400 0.72rem/2.1 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }

/* Recognition ledger: title, date flush right. */
.awards { list-style: none; padding: 0; border-top: 1px solid var(--ink); }
.awards li { display: flex; justify-content: space-between; gap: 1.5rem; padding: 0.7rem 0; border-bottom: 1px solid var(--line); margin: 0; }
.awards .when { font: 400 0.75rem/2 var(--mono); color: var(--muted); white-space: nowrap; }

/* Figures: square corners, hairline frame, mono numbered captions. */
main { counter-reset: fig sec; }
figure { margin: 2.25rem 0; }
figure img, figure svg, figure video { display: block; width: 100%; height: auto; border: 1px solid var(--line); background: var(--surface); }
figure svg.chart { border: 0; background: none; }
figcaption { font: 400 0.75rem/1.55 var(--mono); margin-top: 0.6rem; }
main > figure > figcaption::before, .phones > figure:first-child > figcaption::before { counter-increment: fig; content: "Fig. " counter(fig) "  "; color: var(--ink); white-space: pre; }
.phones { display: grid; grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr)); gap: 1.25rem; background: var(--surface); border: 1px solid var(--line); padding: 1.75rem 1.75rem 0.5rem; margin: 2.25rem 0; }
.phones figure { margin: 0 0 1rem; }
.phones img { border-radius: 20px; max-width: 14rem; margin: 0 auto; }

/* Project-page section numbers: mono "§ 01" above each h2 in the article. */
main > h2::before { counter-increment: sec; content: "§ " counter(sec, decimal-leading-zero); display: block; font: 400 0.72rem/1 var(--mono); letter-spacing: 0.04em; color: var(--muted); margin-bottom: 0.6rem; }
.home main > h2::before { content: none; }

/* Technical layer: a bordered spec sheet admissions readers can skip. */
.tech { border: 1px solid var(--ink); background: var(--surface); padding: 0 1.5rem 0.75rem; margin: 3.5rem 0; font-size: 0.92rem; }
.tech > h2 { margin: 0 -1.5rem 1rem; padding: 0.7rem 1.5rem; border-bottom: 1px solid var(--ink); font: 500 0.75rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: 0.06em; display: flex; justify-content: space-between; }
.tech > h2::after { content: "for technical readers"; color: var(--muted); font-weight: 400; }
.tech h3 { font-size: 0.95rem; }

/* Home: big tight name, mono meta row, real contours. */
.home h1 { font-size: clamp(3.5rem, 13vw, 9.5rem); font-weight: 600; letter-spacing: -0.055em; line-height: 0.9; margin: 3.5rem 0 1.25rem; }
.hero-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.25rem 2rem; list-style: none; padding: 0.7rem 0; margin: 0 0 2.5rem; border-block: 1px solid var(--line); font: 400 0.75rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.hero-meta li { margin: 0; }
.hero-meta a { color: var(--ink); text-transform: none; }
.home .lede { font-size: clamp(1.3rem, 2.8vw, 1.8rem); line-height: 1.35; letter-spacing: -0.02em; max-width: 52rem; margin-bottom: 2.5rem; }
.topo { position: relative; margin: 0 0 1rem; aspect-ratio: 816 / 668; max-height: 26rem; width: 100%; color: var(--ink); overflow: hidden; }
.topo::before { content: ""; position: absolute; inset: -1.5%; background: currentColor; opacity: 0.55; -webkit-mask: url("/img/contours.svg") center / cover no-repeat; mask: url("/img/contours.svg") center / cover no-repeat; }
.topo figcaption { position: absolute; left: 0; bottom: 0; margin: 0; padding: 0.35rem 0.6rem 0 0; background: var(--bg); }
.home section > h2 { display: flex; align-items: baseline; gap: 1rem; font-size: clamp(1.8rem, 4vw, 2.6rem); letter-spacing: -0.035em; margin: 5rem 0 1.25rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--ink); }
.home main { counter-reset: hsec; }
.home section > h2::before { counter-increment: hsec; content: "[" counter(hsec, decimal-leading-zero) "]"; font: 400 0.75rem/1 var(--mono); letter-spacing: 0.04em; color: var(--muted); }
.home .rows p, .home .awards span:first-child { max-width: 44rem; }

/* Lead projects: ledger rows, text left, framed screenshot right. */
.cards { list-style: none; padding: 0; margin: 0; counter-reset: card; }
.cards li { margin: 0; }
.card { text-decoration: none; display: block; }
.cards.lead .card { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: 2rem; padding: 1.75rem 0; border-bottom: 1px solid var(--line); }
.cards.lead .card::before { counter-increment: card; content: counter(card, decimal-leading-zero); position: absolute; top: 1.75rem; font: 400 0.72rem/1 var(--mono); color: var(--muted); }
.card .body { display: flex; flex-direction: column; padding-top: 1.4rem; }
.card .tag { font: 400 0.72rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); margin-bottom: 0.5rem; }
.card h3 { margin: 0 0 0.6rem; font-size: clamp(1.4rem, 2.6vw, 1.85rem); line-height: 1.1; letter-spacing: -0.03em; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; line-height: 1.55; }
.card .win { display: block; margin-top: auto; padding-top: 1rem; font: 500 0.75rem/1.5 var(--mono); color: var(--accent); }
.thumb { order: 2; aspect-ratio: 16 / 10; overflow: hidden; background: var(--surface); border: 1px solid var(--line); padding: 1.5rem 1.5rem 0; }
.thumb img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-bottom: 0; transition: transform 300ms var(--ease-out); }
.thumb.phone img { width: 40%; margin: 0 auto; border-radius: 18px; border-bottom: 1px solid var(--line); }
.thumb.number { display: flex; flex-direction: column; justify-content: flex-end; padding-bottom: 1.25rem; }
.thumb.number b { font-size: 7rem; font-weight: 600; font-stretch: 70%; line-height: 0.85; letter-spacing: -0.04em; }
.thumb.number span { font: 400 0.72rem/1.5 var(--mono); color: var(--muted); max-width: 20rem; margin-top: 0.6rem; }

/* Supporting projects: plain rows with an arrow that nudges on hover. */
.card.small { padding: 1rem 0; border-bottom: 1px solid var(--line); }
.card.small h3 { font-size: 1.3rem; margin-bottom: 0.25rem; }
.card.small h3::after { content: "→"; display: inline-block; margin-left: 0.5rem; font-weight: 400; color: var(--muted); transition: transform 200ms var(--ease-out), color 150ms ease; }
.card.small .win { margin-top: 0.4rem; padding-top: 0; }

/* Ledger rows: research, more projects, activities. */
.rows { list-style: none; padding: 0; }
.rows li { padding: 1rem 0; border-bottom: 1px solid var(--line); margin: 0; }
.rows .head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; font-weight: 600; font-size: 1.1rem; letter-spacing: -0.015em; }
.rows .head .when { font: 400 0.75rem/1.5 var(--mono); color: var(--muted); white-space: nowrap; letter-spacing: 0; }
.rows p { margin: 0.3rem 0 0; color: var(--muted); font-size: 0.93rem; }

.back { display: inline-block; margin-top: 1.5rem; font: 400 0.75rem/1.5 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); text-decoration: none; }
footer { padding-top: 1.25rem; padding-bottom: 2.5rem; margin-top: 5rem; border-top: 1px solid var(--ink); font: 400 0.75rem/1.6 var(--mono); color: var(--muted); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 1rem; }
footer a { color: inherit; }

@media (max-width: 40rem) {
  .cards.lead .card { grid-template-columns: 1fr; gap: 1rem; }
  .thumb { order: 0; margin-top: 1.25rem; }
  .card .body { padding-top: 0; }
  .stats div:nth-child(odd) { border-left: 0; padding-left: 0; }
}
@media (hover: hover) and (pointer: fine) {
  a:hover { text-decoration-color: currentColor; }
  .site nav a:hover, .back:hover { color: var(--ink); }
  .card:hover h3 { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
  .card:hover .thumb img { transform: translateY(-4px); }
  .card.small:hover h3::after { transform: translateX(3px); color: var(--accent); }
}
@media (prefers-reduced-motion: reduce) {
  .thumb img, .card.small h3::after { transition: none; }
}
@media print {
  .site nav, footer, .topo { display: none; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 0.75em; }
}