/* ── Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Libre+Franklin:ital,wght@0,300;0,400;0,500;1,400&display=swap');

/* ── Variables ── */
:root {
  --clr-bg: #ffffff;
  --clr-text: #222222;
  --clr-text-light: #555555;
  --clr-accent: #222222;
  --clr-link: #333333;
  --clr-link-hover: #000000;
  --clr-border: #e5e5e5;
  --clr-muted: #999999;
  --font: 'Libre Franklin', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-w: 1060px;
  --nav-h: 60px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.75;
  font-size: 15.5px;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--clr-link);
  text-decoration: underline;
  text-decoration-color: var(--clr-border);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s;
}
a:hover {
  text-decoration-color: var(--clr-link-hover);
}

/* ── Nav ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--clr-bg);
  height: var(--nav-h);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  height: 100%;
  border-bottom: 1px solid var(--clr-border);
}
.nav-name {
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--clr-text);
  margin-right: auto;
  text-decoration: none;
}
.nav-name:hover { text-decoration: none; }
.nav-links {
  list-style: none;
  display: flex;
  gap: 4px;
}
.nav-links a {
  display: block;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--clr-text-light);
  text-decoration: none;
  border-radius: 4px;
  transition: color 0.15s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--clr-text);
}
.nav-toggle {
  display: none;
  background: none; border: none;
  font-size: 1.4rem; cursor: pointer;
  color: var(--clr-text);
}

/* ── Main ── */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px 40px 80px;
}

h1 {
  font-weight: 500;
  font-size: 1.6rem;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
h2 {
  font-weight: 500;
  font-size: 1.15rem;
  letter-spacing: -0.005em;
  margin: 48px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--clr-border);
}
h3 {
  font-weight: 500;
  font-size: 1rem;
  margin: 28px 0 8px;
}

p { margin-bottom: 16px; }

/* ────────────────────────────
   HOME — big photo + bio
   ──────────────────────────── */
.home-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 56px;
  align-items: start;
}
.home-photo img {
  width: 100%;
  display: block;
}
.photo-credit {
  display: block;
  font-size: 0.72rem;
  color: var(--clr-muted);
  margin-top: 8px;
}
.home-bio p:first-child {
  margin-top: 0;
}
.phd-note {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--clr-border);
  font-size: 0.88rem;
  color: var(--clr-text-light);
}

/* ── Home contact block ── */
.home-contact {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--clr-border);
  font-size: 0.92rem;
}
.home-contact p { margin-bottom: 6px; }
.email-obfuscated {
  color: var(--clr-text-light);
  font-style: italic;
}

/* ── Site footer (PhD note) ── */
.site-footer {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 40px 48px;
  border-top: 1px solid var(--clr-border);
  font-size: 0.85rem;
  color: var(--clr-text-light);
  line-height: 1.6;
}
.site-footer a {
  color: var(--clr-text-light);
}

/* ────────────────────────────
   RESEARCH — citation list
   ──────────────────────────── */
.cite {
  margin-bottom: 18px;
  line-height: 1.7;
}
.abstract-toggle {
  background: none;
  border: none;
  font-family: var(--font);
  font-size: 0.82rem;
  color: var(--clr-muted);
  cursor: pointer;
  padding: 0;
  margin-left: 2px;
}
.abstract-toggle:hover {
  color: var(--clr-text);
}
.abstract {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 0.88rem;
  color: var(--clr-text-light);
  line-height: 1.7;
  padding: 0 0 0 0;
}
.abstract.open {
  max-height: 800px;
  padding: 10px 0 6px 0;
}

/* ────────────────────────────
   MEDAL — research area cards
   ──────────────────────────── */
.research-areas {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 24px;
}
.area-card {
  padding: 28px;
  border: 1px solid var(--clr-border);
  border-radius: 2px;
}
.area-card h3 { margin-top: 0; }
.area-card ul {
  list-style: none;
  padding: 0;
}
.area-card li {
  padding: 3px 0 3px 16px;
  position: relative;
  font-size: 0.9rem;
  color: var(--clr-text-light);
}
.area-card li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--clr-muted);
}

/* ────────────────────────────
   MEDAL — team grid
   ──────────────────────────── */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 32px;
  margin-top: 24px;
}
.team-member { text-align: center; }
.team-member img {
  width: 120px; height: 120px;
  border-radius: 50%;
  object-fit: cover;
  filter: grayscale(15%);
  margin-bottom: 10px;
}
.team-member .name {
  font-weight: 400;
  font-size: 0.88rem;
}
.team-member .role {
  font-size: 0.78rem;
  color: var(--clr-muted);
}

/* ────────────────────────────
   RESOURCES
   ──────────────────────────── */
.resource-group { margin-bottom: 32px; }
.resource-group ul { list-style: none; padding: 0; }
.resource-group li {
  padding: 10px 0;
  border-bottom: 1px solid var(--clr-border);
  font-size: 0.92rem;
}
.resource-group li:last-child { border-bottom: none; }

/* ────────────────────────────
   CONTACT
   ──────────────────────────── */
.contact-card {
  padding: 0;
  max-width: 420px;
}
.contact-card p { margin-bottom: 6px; font-size: 0.95rem; }

/* ────────────────────────────
   TEACHING
   ──────────────────────────── */
.teaching-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--clr-border);
  font-size: 0.92rem;
}
.teaching-item:last-child { border-bottom: none; }

/* ────────────────────────────
   FOOTER
   ──────────────────────────── */
footer {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 24px 40px 56px;
  text-align: center;
  font-size: 0.78rem;
  color: var(--clr-muted);
  border-top: 1px solid var(--clr-border);
}

/* ────────────────────────────
   READING GROUP — schedule table
   ──────────────────────────── */
.schedule-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
  font-size: 0.9rem;
  table-layout: fixed;
}
.schedule-table th {
  text-align: left;
  font-weight: 500;
  padding: 10px 12px;
  border-bottom: 2px solid var(--clr-border);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--clr-text-light);
}
.schedule-table td {
  padding: 12px 12px;
  border-bottom: 1px solid var(--clr-border);
  vertical-align: top;
  line-height: 1.6;
}
.schedule-table td:first-child {
  white-space: nowrap;
  width: 80px;
  color: var(--clr-text-light);
}
.schedule-table td:nth-child(3) {
  white-space: nowrap;
  width: 100px;
}
.schedule-table .authors {
  font-size: 0.82rem;
  color: var(--clr-muted);
}
.schedule-table .break-row td {
  color: var(--clr-muted);
  font-style: italic;
}

/* ────────────────────────────
   MOBILE
   ──────────────────────────── */
@media (max-width: 768px) {
  .nav-inner { padding: 0 20px; }
  main { padding: 36px 20px 60px; }
  footer { padding: 24px 20px 40px; }

  .home-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .home-photo {
    max-width: 300px;
  }
  .research-areas {
    grid-template-columns: 1fr;
  }
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--clr-bg);
    border-bottom: 1px solid var(--clr-border);
    flex-direction: column;
    padding: 12px 20px;
    gap: 2px;
  }
  .nav-links.open { display: flex; }
}