/* willdavis.uk */

@font-face { font-family: "Archivo"; src: url("../fonts/archivo-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Archivo"; src: url("../fonts/archivo-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Archivo"; src: url("../fonts/archivo-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "Archivo"; src: url("../fonts/archivo-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Archivo"; src: url("../fonts/archivo-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }

:root {
  --bg: #ffffff;
  --fg: #111417;
  --fg-2: #4a5159;
  --fg-3: #737b84;
  --rule: #d9dde1;
  --rule-strong: #111417;
  --panel: #eef0f2;
  --media-bg: #eef0f2;
  --link: #1d4f7c;
  --link-hover: #0f3557;
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --wrap: 1120px;
  --gutter: 24px;
  color-scheme: only light;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }

a { color: var(--link); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--link-hover); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }

h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.2; letter-spacing: -0.005em; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
ul { margin: 0; padding-left: 1.1em; }
li + li { margin-top: 0.35em; }

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

.skip { position: absolute; left: -999px; top: 0; background: var(--fg); color: var(--bg); padding: 8px 12px; }
.skip:focus { left: 8px; top: 8px; z-index: 10; }

.muted { color: var(--fg-2); }

/* ---------- header ---------- */
.site-header { border-bottom: 1px solid var(--rule); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.wordmark { font-weight: 700; font-size: 17px; color: var(--fg); text-decoration: none; letter-spacing: -0.01em; }
.wordmark:hover { color: var(--fg); }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--fg-2); text-decoration: none; font-size: 15px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--fg); }

/* ---------- intro ---------- */
.intro { padding: 72px 0 64px; border-bottom: 1px solid var(--rule); }
.intro .wrap { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: 64px; align-items: start; }
.intro h1 { font-size: 50px; font-weight: 700; letter-spacing: -0.02em; line-height: 1.05; }
.intro .role { margin-top: 12px; font-size: 21px; color: var(--fg-2); }
.intro .summary { margin-top: 28px; max-width: 58ch; }
.links { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 28px; font-size: 15px; }

.spec { margin: 6px 0 0; border-top: 1px solid var(--rule-strong); }
.spec div { display: grid; grid-template-columns: 96px 1fr; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--rule); font-size: 15px; line-height: 1.45; }
.spec dt { font-size: 14px; color: var(--fg-3); }
.spec dd { margin: 0; }

/* ---------- sections ---------- */
.section { padding: 64px 0; border-bottom: 1px solid var(--rule); }
.section .wrap { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 48px; }
.section-head h2 { font-size: 24px; font-weight: 700; letter-spacing: -0.01em; }
.section-head p { margin-top: 10px; font-size: 15px; color: var(--fg-2); }

/* experience / education rows */
.entries { border-top: 1px solid var(--rule-strong); }
.entry { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 24px; padding: 24px 0; border-bottom: 1px solid var(--rule); }
.entry:first-child { padding-top: 20px; }
.entry h3 { font-size: 18px; }
.entry .where { color: var(--fg-2); font-size: 15px; }
.entry .when { font-size: 15px; color: var(--fg-2); text-align: right; white-space: nowrap; padding-top: 2px; font-variant-numeric: tabular-nums; }
.entry .body { grid-column: 1 / -1; margin-top: 12px; }
.entry .body ul { color: var(--fg); }
.entry .body p { color: var(--fg-2); }

/* featured projects */
.featured { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.card { display: block; color: inherit; text-decoration: none; }
.card:hover { color: inherit; }
.card .media { position: relative; background: var(--media-bg); aspect-ratio: 4 / 3; overflow: hidden; }
.card .media img { position: absolute; inset: 0; width: 100%; height: 100%; padding: 4%; object-fit: contain; mix-blend-mode: multiply; transition: transform .4s ease; }
.card:hover .media img { transform: scale(1.025); }
.card.span-2 { grid-column: 1 / -1; }
.card .media.wide { aspect-ratio: 2.36 / 1; }
.card .media.wide img { padding: 0; object-fit: cover; }
.card h3 { margin-top: 16px; font-size: 19px; }
.card h3 span { color: var(--link); }
.card:hover h3 span { text-decoration: underline; text-underline-offset: 3px; }
.card p { margin-top: 6px; color: var(--fg-2); font-size: 15px; }
.card .tech { margin-top: 10px; font-size: 14px; color: var(--fg-3); }

.more { margin-top: 48px; border-top: 1px solid var(--rule-strong); }
.more-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 24px; padding: 22px 0; border-bottom: 1px solid var(--rule); }
.more-item h3 { font-size: 18px; }
.more-item .when { font-size: 15px; color: var(--fg-2); white-space: nowrap; padding-top: 2px; font-variant-numeric: tabular-nums; }
.more-item .body { grid-column: 1 / -1; margin-top: 8px; }
.more-item .body p { color: var(--fg-2); font-size: 16px; }
.more-item .tech { margin-top: 10px; font-size: 14px; color: var(--fg-3); }

/* publications */
.pubs { list-style: none; padding: 0; border-top: 1px solid var(--rule-strong); counter-reset: pub; }
.pubs li { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--rule); margin: 0; }
.pubs .year { font-size: 15px; color: var(--fg-2); padding-top: 1px; font-variant-numeric: tabular-nums; }
.pubs .title { font-weight: 500; font-size: 17px; line-height: 1.4; }
.pubs .authors { margin-top: 6px; font-size: 15px; color: var(--fg-2); }
.pubs .authors b { color: var(--fg); font-weight: 500; }
.pubs .venue { margin-top: 2px; font-size: 15px; color: var(--fg-2); font-style: italic; }
.pubs .ref { margin-top: 8px; font-size: 14px; color: var(--fg-3); }
.pubs .ref a { color: var(--link); }

/* skills */
.skills { border-top: 1px solid var(--rule-strong); margin: 0; }
.skills div { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 24px; padding: 14px 0; border-bottom: 1px solid var(--rule); font-size: 15px; }
.skills dt { font-weight: 500; }
.skills dd { margin: 0; color: var(--fg-2); }

/* ---------- project pages ---------- */
.crumbs { padding-top: 32px; font-size: 14px; color: var(--fg-3); }
.crumbs a { color: var(--fg-2); }
.project-head { padding: 20px 0 40px; }
.project-head h1 { font-size: 42px; font-weight: 700; letter-spacing: -0.02em; }
.project-head .lede { margin-top: 16px; font-size: 20px; color: var(--fg-2); max-width: 60ch; line-height: 1.5; }
.meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 32px 0 0; border-top: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule); }
.meta div { padding: 12px 16px 12px 0; }
.meta div + div { padding-left: 16px; border-left: 1px solid var(--rule); }
.meta dt { font-size: 14px; color: var(--fg-3); }
.meta dd { margin: 4px 0 0; font-size: 15px; }

.viewer { position: relative; background: var(--media-bg); aspect-ratio: 16 / 9; }
.viewer model-viewer { width: 100%; height: 100%; --poster-color: transparent; background: transparent; }
.viewer .hint { position: absolute; left: 16px; bottom: 12px; font-size: 14px; color: #737b84; pointer-events: none; }
.viewer .reset { position: absolute; right: 12px; bottom: 10px; font: 500 14px var(--sans); color: #4a5159; background: #fff; border: 1px solid #d9dde1; padding: 5px 10px; cursor: pointer; }
.viewer .reset:hover { color: #111417; border-color: #737b84; }
.caption { margin-top: 10px; font-size: 14px; color: var(--fg-3); }

.gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.gallery figure { margin: 0; }
.gallery .frame { position: relative; background: var(--media-bg); aspect-ratio: 1 / 1; }
.gallery .frame img { position: absolute; inset: 0; width: 100%; height: 100%; padding: 6%; object-fit: contain; mix-blend-mode: multiply; }
.gallery .span-2 { grid-column: 1 / -1; }
.gallery.three { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 24px; }
.gallery .frame.wide { aspect-ratio: 2.36 / 1; }
.gallery .frame.wide img { padding: 0; object-fit: cover; }
.gallery figcaption { margin-top: 8px; font-size: 14px; color: var(--fg-3); }

.prose { max-width: 68ch; }
.prose h2 { font-size: 20px; margin: 40px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose ul { margin-bottom: 1em; }

.next { padding: 40px 0 64px; display: flex; justify-content: space-between; gap: 24px; font-size: 15px; }

/* ---------- footer ---------- */
.site-footer { padding: 32px 0 48px; font-size: 14px; color: var(--fg-3); }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer nav { display: flex; gap: 20px; }
.site-footer a { color: var(--fg-2); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .intro .wrap { grid-template-columns: 1fr; gap: 40px; }
  .section .wrap { grid-template-columns: 1fr; gap: 24px; }
  .skills div { grid-template-columns: 1fr; gap: 2px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  :root { --gutter: 16px; }
  .site-header .wrap { height: 56px; }
  .nav { gap: 18px; }
  .nav .opt { display: none; }
  .intro { padding: 44px 0 44px; }
  .intro h1 { font-size: 40px; }
  .intro .role { font-size: 18px; }
  .section { padding: 44px 0; }
  .featured { grid-template-columns: 1fr; gap: 40px; }
  .entry, .more-item { grid-template-columns: 1fr; }
  .entry .when, .more-item .when { text-align: left; }
  .pubs li { grid-template-columns: 1fr; gap: 4px; }
  .project-head h1 { font-size: 34px; }
  .project-head .lede { font-size: 18px; }
  .meta { grid-template-columns: 1fr; }
  .meta div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); }
  .viewer { aspect-ratio: 4 / 3; }
  .viewer .hint { display: none; }
  .gallery, .gallery.three { grid-template-columns: 1fr; }
  .next { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .card .media img { transition: none; }
}