/* HANG website. Desktop layout follows the original Wix site (980px content column);
   below 1000px wide everything stacks into one column. */
:root {
  --accent: #C7542E;
  --nav: #4A4C4E;
  --serif: 'Crimson Pro', serif;      /* stands in for Wix's Adobe Caslon */
  --sans: 'Nunito Sans', sans-serif;  /* stands in for Wix's Avenir Light */
  --text-weight: 300;                 /* Nunito Sans 300 matches Avenir Light's darkness; 400 = darker text */
  --head-lh: 1.48;                    /* Wix headings got Oswald's line box (1.48), taller than the font's own */
}
* { box-sizing: border-box; }
html { background: #fff; }
body { margin: 0; background: #fff; color: #000; font: var(--text-weight) 16px/1.4em var(--sans); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.wrap { position: relative; width: 980px; margin: 0 auto; }
main { min-height: calc(100vh - 175px); }   /* keeps the footer at the bottom on short pages */
.accent { color: var(--accent); }
.gn { font-family: var(--serif); font-weight: 600; }
.gn b { color: var(--accent); font-weight: inherit; }

/* ---------- header ---------- */
#hdr { position: relative; z-index: 10; height: 77px; background: #fff; box-shadow: 0 0 5px rgba(0,0,0,.7); }
.hdr-in { height: 69px; }
.site-title { position: absolute; left: 0; top: 28px; margin: 0; font-size: 20px; line-height: 22.4px; white-space: nowrap; }
nav { position: absolute; right: 0; top: 20px; height: 44px; }
nav ul { list-style: none; margin: 0; padding: 0; display: flex; height: 100%; }
nav a { display: flex; align-items: center; height: 100%; padding: 0 15px; font: var(--text-weight) 16px/1.4em var(--sans); color: var(--nav); transition: color .3s; }
nav a:hover, nav a.active { color: var(--accent); }
.burger { display: none; }

/* ---------- footer ---------- */
#ftr { position: relative; height: 98px; padding-top: 23px; text-align: center; background: rgba(255,255,255,.6); box-shadow: 0 0 5px rgba(0,0,0,.7); }
#ftr p { margin: 0; }
.tagline { font-size: 16px; line-height: 22.4px; }
.copyright { margin-top: 8px !important; font-size: 11px; line-height: 22.4px; }

/* ---------- page text (Markdown) ---------- */
.prose { padding: 41px 0 30px; }
.prose > p, .prose > ul, .prose > ol, .md > p, .md > ul, .md > ol {
  margin: 0 0 23.8px; font-size: 17px; line-height: 1.4em; text-align: justify;
}
.prose > h2, .md > h2 { margin: 0 0 11.4px; font: 600 20px/var(--head-lh) var(--serif); letter-spacing: .01em; color: var(--accent); }
.prose > h3, .md > h3 { margin: -3.4px 0 1.6px; font: 600 19px/var(--head-lh) var(--serif); letter-spacing: .01em; }
.prose > * + h2 { margin-top: 39.5px; }
.prose > h2:first-child { margin-top: -3.5px; }
.prose > h2 + .publications { margin-top: 25px; }
.prose > .small { font-size: 13px; }
.page-capabilities > .small { font-size: 12px; }
.page-opportunities > h3 { font-size: 18px; letter-spacing: normal; }
.page-capabilities > * + h2 { margin-bottom: 1.4px; }
.split { margin-bottom: 20px; }
.prose > h3 + .split { margin-top: 22px; }
.prose a:hover { text-decoration: underline; }
.prose a.cap { display: inline-block; font-family: var(--serif); font-weight: 600; color: #333; }
.prose a.cap::first-letter { color: var(--accent); }
.prose sup { font-size: 9px; vertical-align: baseline; }
.x-mark { font-size: 12px; }
.prose > p.tight { margin-bottom: 11px; }
.prose > ol.refs { margin-bottom: 13px; padding: 0; list-style-position: inside; font-size: 14px; line-height: 1.5em; text-align: left; }
.prose > p.refs-title { margin: 0; font-size: 14px; line-height: 1.5em; }

/* ---------- home ---------- */
.banner { position: relative; height: 475px; overflow: hidden; display: flex; align-items: center; justify-content: center; background: #FAFAFA; }
.banner-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.banner-title { position: relative; margin: 0 10px; font: 300 38px/normal 'Oswald', sans-serif; letter-spacing: .05em; color: #E6E7E8; text-align: center; }
.page-home { padding: 62px 20px 61px; }
.page-home > .ack { margin: 57px 0 0; }

/* ---------- people ---------- */
.page-people { padding-top: 47px; }
.people { margin: 46px 0 0; }
.person { position: relative; display: flex; gap: 29px; margin-bottom: 68px; }
.person:last-child { margin-bottom: 52px; }
.person-photo { flex: none; width: 262px; height: 262px; object-fit: cover; }
.person-text { flex: 1; display: flex; flex-direction: column; min-height: 281.4px; margin-top: -9.4px; }
.person-name { margin: 0 0 6.5px; font: 600 19px/var(--head-lh) var(--serif); letter-spacing: .01em; color: var(--accent); }
.person-role { margin: 0 0 6.8px; font: 600 18px/var(--head-lh) var(--serif); letter-spacing: .01em; }
.person-email { margin-left: 18px; font-style: italic; }
.person-bio p { margin: 0 0 24.1px; font-size: 17px; line-height: 24.1px; text-align: justify; }
.person-bio p:last-child { margin-bottom: 0; }
/* icons sit at the photo's bottom-right corner, as on the original; site.js moves them below
   the text (.in-flow) if a long bio would run into them */
.person-links { position: absolute; right: 0; bottom: -9px; display: flex; gap: 5px; align-items: center; margin: 0; }
.person-links.in-flow { position: static; align-self: flex-end; margin: auto 0 0; padding-top: 6px; }
.person-links img { width: auto; }
.page-people > h2 { margin-top: 0; }

/* ---------- moments ---------- */
.moments { padding: 6px 0 0; }
.moment { display: flex; align-items: center; gap: 42px; margin-bottom: 62px; }
.moment.flip { flex-direction: row-reverse; }
.moment-media { flex: none; width: 470px; height: 255px; }
.moment-media img { width: 100%; height: 100%; object-fit: cover; }
.moment-media .video { height: 100%; }
.moment-text { flex: 1; }
.moment.flip .moment-text { text-align: right; }
.moment-text h3 { margin: 0 0 6.6px; font: 600 20px/var(--head-lh) var(--serif); letter-spacing: .01em; color: var(--accent); }
.moment-date { margin: 0 0 12.2px; font: 600 16px/var(--head-lh) var(--serif); letter-spacing: .01em; }
.moment-text p:not(.moment-date) { margin: 0 0 22.4px; font-size: 16px; line-height: 1.4em; }
.moment-text p:last-child { margin-bottom: 0; }

/* ---------- capabilities picture grid ---------- */
.services { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; margin: 0 0 9px; }
.service { margin: 0; min-height: 236.5px; }
.service img { width: 100%; height: 167px; object-fit: cover; }
.service figcaption { padding: 10px 4px 0; text-align: center; font: var(--text-weight) 15px/1.4 var(--sans); color: #333; }

/* ---------- research figures + lightbox ---------- */
.figures { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin: 0 0 25px; }
.figure img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.lightbox { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,.85); cursor: zoom-out; }
.lightbox img { max-width: 92vw; max-height: 92vh; }

/* ---------- publications ---------- */
.pubs { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; }
.pub { display: flex; flex-direction: column; justify-content: center; height: 156px; padding: 12px 18px; text-align: center; background: #FBFBFB; color: #333; transition: background .3s; }
.pub[hidden] { display: none; }
a.pub:hover { background: #F1F1F1; text-decoration: none !important; }
.pub-journal { font: 600 15px/1.35 var(--serif); color: var(--accent); }
.pub-title { margin-top: 6px; font: var(--text-weight) 13px/1.4 var(--sans); }
.pubs-more { display: block; margin: 14px auto 0; padding: 4px 18px; border: 0; background: none; font: var(--text-weight) 15px var(--sans); color: var(--nav); cursor: pointer; text-decoration: underline; }

/* ---------- datasets ---------- */
.datasets { margin-top: 8px; }
.dataset { display: flex; gap: 29px; margin-bottom: 56px; }
.dataset-image { flex: none; }
.dataset-image img { width: 300px; height: 200px; object-fit: cover; }
.dataset-text { flex: 1; min-width: 0; }
.dataset-title { margin: -4px 0 2px; font: 600 20px/var(--head-lh) var(--serif); letter-spacing: .01em; color: var(--accent); }
.dataset-meta { margin: 0; font: 600 16px/var(--head-lh) var(--serif); letter-spacing: .01em; }
.dataset-authors { margin: 0 0 10px; font-size: 15px; color: #333; }
.dataset-desc p { margin: 0 0 12px; font-size: 17px; line-height: 1.4em; text-align: justify; }
.dataset-links { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 22px; margin: 16px 0 0; font-size: 15px; }
.dataset-links a { color: var(--nav); text-decoration: underline; }
.prose .dataset-links a.dataset-button { padding: 5px 16px; border: 1px solid var(--accent); color: var(--accent); text-decoration: none; transition: background .2s, color .2s; }
.prose .dataset-links a.dataset-button:hover { background: var(--accent); color: #fff; }
.prose > .datasets-empty { color: #666; }

/* ---------- videos ---------- */
.video iframe { display: block; width: 100%; height: 100%; border: 0; background: #000; }
.video-grid { display: grid; grid-template-columns: 1fr 1fr; column-gap: 62px; row-gap: 24px; margin: 0 0 14px; }
.video-grid h3 { margin: -3.2px 0 0.6px; font: 600 18px/var(--head-lh) var(--serif); letter-spacing: .01em; }
.video-grid .video { aspect-ratio: 459 / 261; }

/* ---------- two columns: text + video/picture (Teaching) ---------- */
.split { display: flex; gap: 34px; align-items: flex-start; }
.split > .md { flex: 0 0 491px; }
.split > .video, .split > .split-media { flex: 1; margin-top: 25px; }
.split > .video { aspect-ratio: 454 / 262; }

/* ---------- small screens ---------- */
@media (max-width: 1000px) {
  .wrap { width: auto; padding: 0 16px; }
  #hdr, .hdr-in { height: 64px; }
  .site-title { left: 16px; top: 21px; font-size: 18px; }
  .burger { display: block; position: absolute; right: 12px; top: 14px; width: 40px; height: 36px; border: 0; background: none; cursor: pointer; }
  .burger span { display: block; height: 2px; margin: 6px; background: var(--nav); }
  nav { display: none; position: absolute; top: 64px; left: 0; right: 0; height: auto; background: #fff; box-shadow: 0 4px 6px rgba(0,0,0,.15); }
  nav ul { flex-direction: column; }
  nav a { padding: 12px 20px; }
  .nav-open nav { display: block; }

  .prose { padding: 24px 16px 32px; }
  .prose > p, .md > p { text-align: left; }
  .banner { height: 300px; }
  .banner-title { font-size: 28px; }
  .page-home { padding: 32px 16px; }
  .page-home > .ack { margin-top: 32px; }

  .person { flex-direction: column; gap: 14px; margin-bottom: 44px; }
  .person-photo { width: 220px; height: 220px; }
  .person-text { min-height: 0; margin-top: 0; }
  .person-bio p { text-align: left; }
  .person-links, .person-links.in-flow { position: static; align-self: flex-start; margin-top: 10px; padding-top: 0; }

  .moment, .moment.flip { flex-direction: column; align-items: stretch; gap: 14px; margin-bottom: 40px; }
  .moment-media { width: 100%; height: auto; aspect-ratio: 470 / 255; }
  .moment.flip .moment-text { text-align: left; }

  .services { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .service { min-height: 0; }
  .service img { height: auto; aspect-ratio: 4 / 3; }
  .figures { gap: 10px; }
  .pubs { grid-template-columns: 1fr; gap: 14px; }
  .pub { height: auto; min-height: 120px; }
  .video-grid { grid-template-columns: 1fr; }
  .dataset { flex-direction: column; gap: 14px; margin-bottom: 40px; }
  .dataset-image img { width: 100%; height: auto; aspect-ratio: 3 / 2; }
  .dataset-desc p { text-align: left; }
  .split { flex-direction: column; gap: 12px; }
  .split > .md { flex: none; }
  .split > .video, .split > .split-media { width: 100%; margin: 0 0 24px; }
  #ftr { height: auto; padding-bottom: 20px; }
}