/* ── Tokens ──────────────────────────────────────────────────── */
:root {
  color-scheme: light;
  --font: 'Plus Jakarta Sans', Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #f5f8fc;
  --surface: #ffffff;
  --surface-soft: #e4f2f0;
  --ink: #29333f;
  --muted: #4a5a68;
  --muted-strong: #2d3a48;
  --line: #c8d8da;
  --brand: #66a89e;
  --brand-deep: #4a8880;
  --brand-soft: #e4f2f0;
  --dark-bg: #172331;
  --shadow-sm: 0 1px 3px rgba(41,51,63,.07), 0 1px 2px rgba(41,51,63,.05);
  --shadow:    0 4px 8px rgba(41,51,63,.06), 0 14px 34px rgba(41,51,63,.09);
  --shadow-lg: 0 8px 16px rgba(41,51,63,.08), 0 24px 56px rgba(41,51,63,.12);
  --radius:    12px;
  --radius-sm: 8px;
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  line-height: 1.7;
  background: var(--bg);
  color: var(--ink);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(130deg, rgba(102,168,158,.09) 0%, transparent 40%),
    linear-gradient(310deg, rgba(41,51,63,.06)   0%, transparent 35%);
}

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

/* ── Layout ──────────────────────────────────────────────────── */
.container {
  width: min(1120px, 100% - 2.5rem);
  margin: 0 auto;
}

main {
  padding: 2.5rem 0 5rem;
}

section {
  margin-bottom: 3.5rem;
}

/* ── Header ──────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid rgba(12,28,26,.09);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 0.85rem 0;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--ink);
  text-decoration: none;
}

.site-brand img {
  height: 62px;
  width: auto;
  max-width: 340px;
}

.eyebrow {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--brand-deep);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  display: block;
  width: 16px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
  align-items: center;
  justify-content: flex-end;
}

.site-nav a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted-strong);
  text-decoration: none;
  font-size: 0.93rem;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: background .15s, color .15s;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.active {
  color: var(--brand-deep);
  background: var(--brand-soft);
}

a {
  color: var(--brand-deep);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}
a:hover { color: var(--brand); }

/* ── Typography ──────────────────────────────────────────────── */
h1, h2, h3 {
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 {
  margin: 0.75rem 0 1.1rem;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800;
}

h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
}

h3 {
  margin: 1.4rem 0 0.55rem;
  font-size: 1.08rem;
  font-weight: 700;
}

p {
  margin: 0.9rem 0;
  color: var(--muted-strong);
}

ul, ol { padding-left: 1.25rem; margin: 1rem 0; }
li     { margin: 0.45rem 0; color: var(--muted-strong); }

/* ── Buttons ─────────────────────────────────────────────────── */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  border: 1.5px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform .15s, box-shadow .15s, background .15s;
}

.button.primary {
  color: #fff;
  background: var(--brand-deep);
  box-shadow: 0 2px 8px rgba(74,136,128,.38);
}

.button.primary:hover {
  background: var(--brand);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(74,136,128,.42);
}

.button.secondary {
  color: var(--brand-deep);
  border-color: var(--line);
  background: var(--surface);
}

.button.secondary:hover {
  border-color: var(--brand);
  background: var(--brand-soft);
  transform: translateY(-1px);
}

/* ── Hero ────────────────────────────────────────────────────── */
.page-hero,
.home-hero {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.page-hero {
  padding: 1.25rem 2.5rem;
  background:
    linear-gradient(135deg, rgba(102,168,158,.14), rgba(255,255,255,.75)),
    var(--surface);
}

.home-hero {
  /* text-only, no photo */
}

.home-hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 2rem 2.5rem;
  position: relative;
}

/* Subtle dot-grid background fading across the card */
.home-hero-copy::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(102,168,158,.20) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(135deg, transparent 20%, rgba(0,0,0,.3) 55%, transparent 90%);
  -webkit-mask-image: linear-gradient(135deg, transparent 20%, rgba(0,0,0,.3) 55%, transparent 90%);
  pointer-events: none;
  z-index: 0;
}

.home-hero-copy > * { position: relative; z-index: 1; }

.hero-lead {
  margin: 0 0 0.25rem;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
}

.hero-pi {
  margin: 1rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.hero-pi a {
  font-weight: 600;
  color: var(--brand-deep);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

/* ── Intro ───────────────────────────────────────────────────── */
.intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0;
  position: relative;
  font-size: 1.05rem;
  line-height: 1.75;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.intro::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 1.5rem;
  bottom: 1.5rem;
  width: 1px;
  background: var(--line);
  pointer-events: none;
}

.intro > p {
  margin: 0;
  padding: 2.25rem 2.5rem;
  color: var(--muted-strong);
}

.intro > p:first-child { padding-right: 2rem; }
.intro > p:last-child  { padding-left: 2rem; }

/* ── Section heading ─────────────────────────────────────────── */
.section-heading {
  max-width: 720px;
  margin-bottom: 1.75rem;
}

.section-heading p:not(.eyebrow) { margin-bottom: 0; }

/* ── Research pillars ────────────────────────────────────────── */
.highlights,
.research-pillars,
.contact-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card,
.pillar,
.contact-card {
  padding: 1.6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.9);
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .2s;
}

.card:hover,
.pillar:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

/* Top accent for highlight cards */
.card {
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--brand-deep));
}

/* Pillar icon */
.pillar-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--brand-soft);
  color: var(--brand-deep);
  margin-bottom: 0.25rem;
}

.card h3,
.pillar h3,
.contact-card h3 { margin-top: 0; }

/* ── Metric cards ────────────────────────────────────────────── */
.metric {
  display: block;
  color: var(--brand-deep);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.1rem;
}

/* ── Gallery ─────────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(4, 1fr);
}

.gallery-item--wide { grid-column: span 2; }

.gallery-item {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  cursor: zoom-in;
  transition: transform .35s cubic-bezier(.22,.61,.36,1),
              box-shadow .35s cubic-bezier(.22,.61,.36,1);
}

.gallery-item:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 16px 48px rgba(41,51,63,.22);
  z-index: 2;
  position: relative;
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform .5s cubic-bezier(.22,.61,.36,1);
}

.gallery-item:hover img { transform: scale(1.1); }

/* ── Lightbox ────────────────────────────────────────────────── */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 900;
  background: rgba(10,18,30,.92);
  align-items: center;
  justify-content: center;
  padding: 2rem;
  cursor: zoom-out;
}

.lightbox.is-open {
  display: flex;
  animation: lb-fade .22s ease;
}

.lightbox-img {
  width: 88vw;
  height: 84vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 32px 96px rgba(0,0,0,.65);
  cursor: default;
  animation: lb-scale .28s cubic-bezier(.22,.61,.36,1);
}

.lightbox-close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s;
  z-index: 1;
}

.lightbox-close:hover { background: rgba(255,255,255,.28); }

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s, transform .15s;
  z-index: 1;
  user-select: none;
}

.lightbox-prev { left: 1.5rem; }
.lightbox-next { right: 1.5rem; }

.lightbox-nav:hover {
  background: rgba(255,255,255,.28);
  transform: translateY(-50%) scale(1.1);
}

@keyframes lb-fade  { from { opacity: 0; } to { opacity: 1; } }
@keyframes lb-scale { from { transform: scale(.92); opacity: 0; }
                      to   { transform: scale(1);   opacity: 1; } }

/* ── Person cards ────────────────────────────────────────────── */
.person-card {
  display: flex;
  gap: 1.35rem;
  align-items: flex-start;
  margin-bottom: 1rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.9);
  box-shadow: var(--shadow-sm);
}

.person-card img {
  width: 200px;
  min-width: 200px;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  align-self: flex-start;
}

.person-details h2,
.person-details h3 { margin-top: 0; margin-bottom: 0.35rem; }

/* ── Page hero ───────────────────────────────────────────────── */
.page-hero h2,
.home-hero h2 {
  max-width: 780px;
  color: var(--muted);
  font-size: 1.3rem;
  font-weight: 500;
}

/* ── Footer ──────────────────────────────────────────────────── */
.site-footer {
  background: #172331;
  border-top: none;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.1rem 0;
}

/* ── Funders section ─────────────────────────────────────────── */
.funders-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem 1.5rem;
  margin-top: 1.25rem;
  padding: 1.5rem 2rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  align-items: center;
  justify-items: center;
}

/* Uniform bounding box for all logos — same cell size ensures column alignment */
.funder-logo {
  display: block;
  width: 100%;
  height: 110px;
  object-fit: contain;
  object-position: center center;
  border-radius: 0;
  transition: transform .2s ease, opacity .2s ease;
}

.funder-logo:hover {
  transform: translateY(-2px);
  opacity: 0.8;
}

@media (max-width: 700px) {
  .funders-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    padding: 1.5rem;
  }
  .funder-logo { height: 80px; }
}

/* ── Grants table ────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  margin-top: 1.25rem;
}

.grants-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  line-height: 1.35;
}

/* Dark header — anchors the columns visually */
.grants-table thead tr {
  background: var(--dark-bg);
}

.grants-table th {
  color: rgba(255,255,255,.78);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 0.45rem 0.9rem;
  text-align: left;
  vertical-align: bottom;
  white-space: nowrap;
}

.grants-table th + th {
  border-left: 1px solid rgba(255,255,255,.12);
}

/* Body cells */
.grants-table td {
  padding: 0.45rem 0.9rem;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: inherit;
}

/* Vertical column dividers */
.grants-table td + td {
  border-left: 1px solid var(--line);
}

/* Alternating row shading */
.grants-table tbody tr:nth-child(odd)  td { background: var(--surface); }
.grants-table tbody tr:nth-child(even) td { background: var(--bg); }

.grants-table tbody tr:last-child td { border-bottom: none; }

.grants-table tbody tr:hover td {
  background: var(--brand-soft);
  transition: background .12s;
}

/* Secondary info inside funder cell — same size as body, lighter colour only */
.grants-table small {
  display: block;
  margin-top: 0.3rem;
  font-size: inherit;
  font-family: var(--font);
  color: var(--muted);
  line-height: 1.5;
}

/* Date column */
.grant-date {
  min-width: 108px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--muted-strong);
  white-space: nowrap;
}

/* Funder column */
.grant-funder { min-width: 180px; }

/* Role column */
.grant-role {
  min-width: 130px;
  white-space: nowrap;
  hyphens: none;
}

/* PI highlighted in brand teal */
.grant-role-pi {
  color: var(--brand-deep);
  font-weight: 700;
}

/* Title column */
.grant-title {
  font-weight: 600;
  min-width: 260px;
}

/* Amount column */
.grant-amount {
  white-space: nowrap;
  font-weight: 700;
  min-width: 110px;
  text-align: right;
}

.grant-amount small {
  display: block;
  font-weight: 400;
  font-size: inherit;
  color: var(--muted);
  margin-top: 0.15rem;
}

/* ── Spin-outs ───────────────────────────────────────────────── */
.spinouts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
}

.spinout-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow .2s, transform .2s;
}

.spinout-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.spinout-logo-link {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 2.5rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.spinout-logo {
  width: 100%;
  max-width: 280px;
  height: 80px;
  object-fit: contain;
}

.spinout-logo--square {
  max-width: 130px;
  height: 130px;
}

.spinout-logo--crop {
  height: 130px;
  clip-path: inset(0 6%);
}

.spinout-body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.spinout-body h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.spinout-body h3 a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}

.spinout-body h3 a:hover {
  color: var(--brand-deep);
}

.spinout-body p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted-strong);
  line-height: 1.6;
}

/* ── Footer layout ───────────────────────────────────────────── */
.footer-logo-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  text-decoration: none;
}

.footer-logo {
  height: 44px;
  width: auto;
  max-width: 260px;
}

.footer-center {
  flex: 1;
  text-align: center;
}

.uos-logo {
  height: 60px;
  width: auto;
  opacity: 0.75;
  flex-shrink: 0;
}

.site-footer .footer-uos-name {
  margin: 0;
  color: #cce4e1;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
}

.site-footer .footer-uos-dept {
  margin: 0.3rem 0 0;
  color: #7aa0a0;
  font-size: 0.85rem;
  line-height: 1.4;
}

.site-footer p {
  margin: 0;
  color: #99bab8;
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 900px) {
  .header-top,
  .intro {
    grid-template-columns: 1fr;
  }

  .header-top { display: grid; }
  .site-nav   { justify-content: flex-start; }

  .page-hero,
  .home-hero-copy { padding: 1.5rem 1.75rem; }

  .intro::after { display: none; }

  .intro > p:first-child,
  .intro > p:last-child { padding: 1.5rem 2rem; }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-item--wide { grid-column: 1 / -1; }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
  }

  .footer-center { text-align: center; }
}

@media (max-width: 700px) {
  .container { width: min(100% - 1.25rem, 1120px); }

  /* Alumni timeline — narrower labels on phones */
  .at-lbl { width: 88px; min-width: 88px; font-size: .65rem; }
  .at-section-hdr { padding-left: 88px; }

  main { padding-top: 1.5rem; }

  .site-brand img { height: 46px; max-width: 240px; }

  .site-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-nav a { width: 100%; }

  .page-hero,
  .home-hero-copy { padding: 1.5rem; }

  .intro > p:first-child,
  .intro > p:last-child { padding: 1.25rem 1.5rem; }

  .page-hero h2,
  .home-hero h2 { font-size: 1.05rem; }

  .person-card { display: grid; }

  .person-card img {
    width: 100%;
    max-width: 260px;
    height: auto;
    min-width: unset;
  }

  /* Spinout cards: single column on narrow phones */
  .spinouts-grid { grid-template-columns: 1fr; }

  /* Contact social links: stack vertically */
  .social-links { flex-direction: column; gap: .6rem; }
  .social-link  { justify-content: center; }

  /* Footer logos: smaller so row still fits */
  .footer-logo { height: 34px; }
  .uos-logo    { height: 42px; }
}