/* GAICG design system
   -------------------------------------------------------------------------- */
:root {
  --ink-950: #071a2b;
  --ink-900: #0b2746;
  --ink-800: #143a5c;
  --ink-700: #25506f;
  --ink-600: #45677f;
  --ink-500: #637d91;
  --ink-300: #b8c7d2;
  --ink-200: #d8e1e8;
  --ink-100: #edf2f5;
  --ink-050: #f7f9fa;
  --white: #ffffff;
  --blue-700: #0b5d91;
  --blue-600: #1474ac;
  --blue-100: #dcecf6;
  --teal-700: #0f766e;
  --teal-100: #dff3ef;
  --success: #287a5b;

  --font-sans: Inter, Aptos, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Aptos Display", Inter, Aptos, "Segoe UI", "Helvetica Neue", Arial, sans-serif;

  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  --radius-sm: .5rem;
  --radius-md: .9rem;
  --radius-lg: 1.4rem;
  --radius-xl: 2rem;
  --shadow-sm: 0 10px 30px rgba(7, 26, 43, .07);
  --shadow-md: 0 24px 60px rgba(7, 26, 43, .12);
  --container: 74rem;
  --transition: 180ms ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink-950);
  background: var(--white);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--blue-700); text-underline-offset: .2em; text-decoration-thickness: .08em; }
a:hover { color: var(--ink-900); }
button, input, textarea, select { font: inherit; }
::selection { background: var(--blue-100); color: var(--ink-950); }

h1, h2, h3, h4 {
  margin: 0 0 .65em;
  color: var(--ink-950);
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.035em;
}
h1 { font-size: clamp(2.7rem, 7vw, 5.7rem); }
h2 { font-size: clamp(2rem, 4vw, 3.55rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.55rem); letter-spacing: -.02em; }
p { margin: 0 0 1.1rem; }
ul, ol { margin-top: 0; }

.container { width: min(calc(100% - 2rem), var(--container)); margin-inline: auto; }
.narrow { max-width: 54rem; margin-inline: auto; }
.sr-only {
  position: absolute !important; width: 1px !important; height: 1px !important; padding: 0 !important;
  margin: -1px !important; overflow: hidden !important; clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important; border: 0 !important;
}
.skip-link {
  position: fixed; left: 1rem; top: 1rem; z-index: 9999; padding: .75rem 1rem;
  background: var(--ink-950); color: var(--white); border-radius: var(--radius-sm);
  transform: translateY(-180%); transition: transform var(--transition);
}
.skip-link:focus { transform: translateY(0); }

/* Header + navigation */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,.93); border-bottom: 1px solid transparent;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-header.is-scrolled { border-color: var(--ink-100); box-shadow: 0 4px 18px rgba(7,26,43,.05); }
.header-inner { min-height: 5.25rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .8rem; color: var(--ink-950); text-decoration: none; min-width: 0; }
.brand-mark {
  display: grid; place-items: center; flex: 0 0 auto; width: 3.4rem; height: 3.4rem;
  border-radius: .8rem; background: var(--ink-900); color: var(--white); font-weight: 800; letter-spacing: -.05em;
}
.brand-text { display: grid; line-height: 1.1; }
.brand-text strong { font-size: 1.35rem; letter-spacing: .08em; }
.brand-text span { margin-top: .25rem; color: var(--ink-600); font-size: .9rem; white-space: nowrap; }
.primary-nav ul { display: flex; gap: .15rem; list-style: none; padding: 0; margin: 0; }
.primary-nav a {
  display: block; padding: .7rem .9rem; border-radius: .65rem; color: var(--ink-700);
  font-size: .94rem; font-weight: 650; text-decoration: none; transition: background var(--transition), color var(--transition);
}
.primary-nav a:hover, .primary-nav a[aria-current="page"] { background: var(--ink-050); color: var(--ink-950); }
.nav-toggle { display: none; width: 2.8rem; height: 2.8rem; padding: .65rem; border: 0; border-radius: .7rem; background: var(--ink-050); cursor: pointer; }
.nav-toggle span:not(.sr-only) { display: block; width: 100%; height: 2px; margin: 4px 0; background: var(--ink-900); transition: transform var(--transition), opacity var(--transition); }
.nav-toggle[aria-expanded="true"] span:nth-of-type(2) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-of-type(3) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-of-type(4) { transform: translateY(-6px) rotate(-45deg); }

/* Hero */
.hero { position: relative; overflow: hidden; padding: clamp(5rem, 10vw, 9rem) 0 clamp(5rem, 9vw, 8rem); background: linear-gradient(180deg, #f8fbfc 0%, #fff 78%); }
.hero::before {
  content: ""; position: absolute; width: 42rem; height: 42rem; right: -15rem; top: -20rem;
  border-radius: 50%; background: radial-gradient(circle, rgba(20,116,172,.12), rgba(20,116,172,0) 70%); pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(22rem, .88fr); gap: clamp(3rem, 7vw, 7rem); align-items: center; }
.eyebrow { margin: 0 0 1rem; color: var(--blue-700); font-size: .77rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow-light { color: #a9d7ef; }
.hero h1 { max-width: 12ch; }
.hero-lead, .page-intro { max-width: 46rem; color: var(--ink-600); font-size: clamp(1.12rem, 1.8vw, 1.35rem); line-height: 1.55; }
.button-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 3rem; padding: .78rem 1.15rem; border: 1px solid transparent; border-radius: .75rem; font-weight: 750; text-decoration: none; transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition); }
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--ink-900); color: var(--white); }
.button-primary:hover { background: var(--ink-950); color: var(--white); }
.button-secondary { border-color: var(--ink-200); background: var(--white); color: var(--ink-900); }
.button-secondary:hover { border-color: var(--ink-300); color: var(--ink-950); }
.button-light { background: var(--white); color: var(--ink-950); }
.button-light:hover { color: var(--ink-950); background: var(--ink-100); }

.hero-visual { position: relative; min-height: 31rem; padding: 2rem; border-radius: var(--radius-xl); background: var(--ink-900); box-shadow: var(--shadow-md); overflow: hidden; }
.hero-visual::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); background-size: 32px 32px; mask-image: linear-gradient(to bottom, black, transparent 85%); }
.signal-card { position: relative; z-index: 2; width: min(90%, 22rem); margin-left: auto; margin-bottom: 1rem; padding: 1.25rem; border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius-lg); background: rgba(255,255,255,.08); color: #d8e6f0; backdrop-filter: blur(8px); }
.signal-card-primary { margin-top: 2rem; margin-right: 2.5rem; background: rgba(255,255,255,.13); }
.signal-card strong { display: block; color: var(--white); font-size: 1.25rem; }
.signal-card p { margin: .35rem 0 0; font-size: .9rem; }
.signal-label { display: block; margin-bottom: .75rem; color: #9ecce6; font-size: .7rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.hero-mark { position: absolute; left: 1.8rem; bottom: 1.2rem; color: rgba(255,255,255,.09); font-size: clamp(4rem, 10vw, 7.6rem); font-weight: 900; letter-spacing: -.07em; }

/* Sections + cards */
.section { padding: clamp(4.5rem, 8vw, 8rem) 0; }
.section-tight { padding-top: clamp(3.5rem, 6vw, 5.5rem); }
.section-topless { padding-top: 1rem; }
.section-soft { background: var(--ink-050); }
.section-dark { background: var(--ink-900); color: #d9e5ed; }
.section-dark h2 { color: var(--white); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 2rem; }
.section-heading h2 { margin-bottom: 0; }
.text-link { display: inline-flex; gap: .4rem; align-items: center; color: var(--ink-900); font-weight: 750; text-decoration: none; border-bottom: 1px solid var(--ink-300); }
.text-link:hover { color: var(--blue-700); border-color: var(--blue-700); }
.card-grid { display: grid; gap: 1rem; }
.card-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.project-card { display: flex; min-height: 24rem; flex-direction: column; padding: 1.5rem; border: 1px solid var(--ink-100); border-radius: var(--radius-lg); background: var(--white); transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.project-card:hover { transform: translateY(-3px); border-color: var(--ink-200); box-shadow: var(--shadow-sm); }
.project-icon { display: grid; place-items: center; width: 3rem; height: 3rem; margin-bottom: 2rem; border-radius: .85rem; background: var(--blue-100); color: var(--blue-700); font-size: .82rem; font-weight: 900; }
.card-kicker { margin-bottom: .65rem; color: var(--ink-600); font-size: .76rem; font-weight: 750; letter-spacing: .05em; text-transform: uppercase; }
.project-card h3 { margin-bottom: .8rem; }
.project-card > p:not(.card-kicker) { color: var(--ink-600); }
.status { display: inline-flex; align-items: center; gap: .45rem; margin-top: auto; color: var(--success); font-size: .78rem; font-weight: 750; }
.status span { width: .55rem; height: .55rem; border-radius: 50%; background: var(--success); }
.split-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(3rem, 8vw, 8rem); align-items: start; }
.prose-large { color: var(--ink-700); font-size: clamp(1.1rem, 1.6vw, 1.3rem); }
.publication-stack { border-top: 1px solid var(--ink-200); }
.publication-row { display: grid; grid-template-columns: 6rem 1fr 2rem; gap: 1.5rem; align-items: start; padding: 1.65rem .5rem; border-bottom: 1px solid var(--ink-200); }
.publication-row h3 { margin-bottom: .35rem; font-size: 1.2rem; }
.publication-row p { margin-bottom: .2rem; color: var(--ink-600); }
.publication-year { color: var(--ink-500); font-weight: 750; font-variant-numeric: tabular-nums; }
.publication-meta { color: var(--ink-500) !important; font-size: .9rem; }
.publication-action { color: var(--ink-500); font-size: 1.3rem; }
.cta-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(3rem, 8vw, 8rem); align-items: end; }
.cta-grid p { max-width: 32rem; }

/* Interior pages */
.page-hero { padding: clamp(5rem, 9vw, 8rem) 0 3rem; background: linear-gradient(180deg, var(--ink-050), var(--white)); }
.page-hero h1 { font-size: clamp(3rem, 7vw, 5.2rem); }
.project-list { border-top: 1px solid var(--ink-200); }
.project-feature { display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(2rem, 7vw, 7rem); padding: 3rem 0; border-bottom: 1px solid var(--ink-200); }
.project-feature h2 { font-size: clamp(1.8rem, 3vw, 2.7rem); }
.project-feature > div:last-child > p { max-width: 45rem; color: var(--ink-600); font-size: 1.08rem; }
.mini-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; margin: 1.8rem 0; }
.mini-meta div { padding: 1rem; border-radius: var(--radius-md); background: var(--ink-050); }
.mini-meta dt { color: var(--ink-500); font-size: .72rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.mini-meta dd { margin: .25rem 0 0; color: var(--ink-900); font-weight: 650; }
.team-section { margin-bottom: 5rem; }
.team-section-heading { margin-bottom: 1.5rem; }
.team-section-heading h2 { font-size: clamp(1.9rem, 3.5vw, 2.8rem); }
.team-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.person-card { display: grid; grid-template-columns: 4.6rem 1fr; gap: 1.2rem; padding: 1.4rem; border: 1px solid var(--ink-100); border-radius: var(--radius-lg); background: var(--white); }
.avatar { display: grid; place-items: center; width: 4.6rem; height: 4.6rem; border-radius: 1.15rem; background: linear-gradient(135deg, var(--ink-900), var(--blue-700)); color: var(--white); font-weight: 850; letter-spacing: .02em; }
.person-card h3 { margin-bottom: .2rem; }
.person-card p { color: var(--ink-600); font-size: .92rem; }
.person-role { margin-bottom: .6rem !important; color: var(--blue-700) !important; font-weight: 750; }
.profile-links { display: flex; flex-wrap: wrap; gap: .8rem; }
.profile-links a { font-size: .85rem; font-weight: 700; }
.publication-page { max-width: 64rem; }
.publication-year-group { display: grid; grid-template-columns: 7rem 1fr; gap: 2rem; padding: 2.5rem 0; border-top: 1px solid var(--ink-200); }
.publication-year-group h2 { margin: 0; font-size: 1.5rem; color: var(--ink-500); }
.publication-list { display: grid; gap: 1rem; }
.publication-card { padding-bottom: 1.5rem; border-bottom: 1px solid var(--ink-100); }
.publication-card:last-child { border-bottom: 0; }
.publication-card h3 { margin-bottom: .45rem; }
.publication-authors { margin-bottom: .25rem; color: var(--ink-700); }
.publication-links { display: flex; gap: .7rem; margin-top: .8rem; }
.publication-links a { font-size: .85rem; font-weight: 750; }
.placeholder-note { display: inline-block; margin-top: .6rem; padding: .3rem .55rem; border-radius: .4rem; background: #fff4d8; color: #765a12; font-size: .76rem; font-weight: 700; }
.collaborator-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.collaborator-card { display: grid; grid-template-columns: 4rem 1fr; gap: 1.25rem; padding: 2rem; border: 1px solid var(--ink-100); border-radius: var(--radius-lg); }
.collaborator-mark { display: grid; place-items: center; width: 4rem; height: 4rem; border-radius: 50%; background: var(--teal-100); color: var(--teal-700); font-size: 1.3rem; font-weight: 850; }
.collaborator-card h2 { font-size: 1.5rem; }
.collaborator-card p { color: var(--ink-600); }
.contact-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.contact-panel { min-height: 22rem; padding: 2rem; border-radius: var(--radius-lg); background: var(--ink-900); color: #d8e4ed; }
.contact-panel h2 { color: var(--white); }
.contact-panel-soft { background: var(--ink-050); color: var(--ink-700); }
.contact-panel-soft h2 { color: var(--ink-950); }
.contact-placeholder { display: inline-flex; margin-top: 1rem; padding: .7rem .85rem; border: 1px dashed rgba(255,255,255,.35); border-radius: .65rem; color: var(--white); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9rem; }

/* Footer */
.site-footer { padding: 4rem 0 1.5rem; background: #061522; color: #c2d0da; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .6fr 1fr; gap: 3rem; padding-bottom: 3rem; }
.footer-brand { display: inline-block; margin-bottom: .8rem; color: var(--white); font-size: 1.45rem; font-weight: 850; letter-spacing: .08em; text-decoration: none; }
.site-footer a { color: #e4eef4; }
.site-footer .muted { color: #8da4b5; }
.footer-heading { margin: 0 0 1rem; color: var(--white); font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; }
.footer-links { list-style: none; margin: 0; padding: 0; }
.footer-links li + li { margin-top: .45rem; }
.footer-links a { text-decoration: none; }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.1); color: #8299aa; font-size: .82rem; }

/* Accessible motion */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
:focus-visible { outline: 3px solid #66b7e3; outline-offset: 3px; border-radius: .25rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .001ms !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 1050px) {
  .card-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 3rem; }
  .brand-text span { display: none; }
}

@media (max-width: 820px) {
  .header-inner { min-height: 4.6rem; }
  .nav-toggle { display: block; }
  .primary-nav {
    position: absolute; left: 1rem; right: 1rem; top: calc(100% + .4rem); padding: .65rem;
    border: 1px solid var(--ink-100); border-radius: var(--radius-lg); background: var(--white); box-shadow: var(--shadow-md);
    opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  }
  .primary-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .primary-nav ul { display: grid; }
  .primary-nav a { padding: .9rem; }
  .hero-grid, .split-layout, .cta-grid, .project-feature, .contact-grid { grid-template-columns: 1fr; }
  .hero-visual { min-height: 26rem; }
  .signal-card-primary { margin-right: 0; }
  .team-grid, .collaborator-grid { grid-template-columns: 1fr; }
  .publication-year-group { grid-template-columns: 1fr; gap: 1rem; }
  .publication-year-group h2 { font-size: 1.2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .container { width: min(calc(100% - 1.25rem), var(--container)); }
  h1 { font-size: clamp(2.5rem, 13vw, 4rem); }
  .hero { padding-top: 4rem; }
  .hero-grid { gap: 2.5rem; }
  .hero-visual { min-height: 23rem; padding: 1.2rem; }
  .signal-card { width: 100%; }
  .card-grid-4 { grid-template-columns: 1fr; }
  .project-card { min-height: auto; }
  .section-heading { align-items: start; flex-direction: column; gap: .8rem; }
  .publication-row { grid-template-columns: 3.5rem 1fr; gap: .8rem; }
  .publication-action { display: none; }
  .mini-meta { grid-template-columns: 1fr; }
  .person-card { grid-template-columns: 3.7rem 1fr; gap: 1rem; padding: 1rem; }
  .avatar { width: 3.7rem; height: 3.7rem; border-radius: .9rem; }
  .collaborator-card { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > div:first-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

/* avatar photos*/
.avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;

  display: flex;
  align-items: center;
  justify-content: center;

  font-weight: 700;
  font-size: 1.25rem;
  background: var(--surface-alt);
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}