:root {
  --navy: #2c3e50;
  --navy-dark: #22313f;
  --grey: #f6f6f6;
  --text: #303030;
  --muted: #6b7280;
  --accent: #1f5fa8;
  --red: #c0392b;
  --line: #e3e6ea;
  --wrap: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 50px; }
body {
  margin: 0;
  font-family: Lato, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: #fff;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, .brand, .nav-links, .tabs button, .year, .sub { font-family: Montserrat, sans-serif; }
h2 {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin: 0 0 20px;
}
h4 { font-size: 18px; margin: 24px 0 6px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.section { padding: 64px 0; }
.section.alt { background: var(--grey); }
.section.alt .pub-card, .section.alt .bib pre { background: #fff; }
.muted { color: var(--muted); }

/* ---------------------------------------------------------------- nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: var(--navy);
}
.nav-inner {
  max-width: var(--wrap); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 50px;
}
.brand { color: #fff; font-weight: 400; font-size: 20px; letter-spacing: 3px; }
.brand:hover { text-decoration: none; }
.nav-links { list-style: none; display: flex; margin: 0; padding: 0; font-size: 12px; font-weight: 400; letter-spacing: 4px; height: 100%; }
.nav-links a { display: block; color: #fff; padding: 0 15px; line-height: 50px; text-transform: uppercase; }
.nav-links a:hover, .nav-links a.active { background: #fff; color: var(--navy); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; color: #fff; font-size: 24px; cursor: pointer; }

/* --------------------------------------------------------------- hero */
.hero {
  background: var(--navy);
  color: #fff;
  text-align: center;
  padding: 44px 24px 52px;
  font-family: Montserrat, sans-serif;
}
.hero h1 { font-size: 58px; font-weight: 400; margin: 0 0 12px; }
.hero-links { display: flex; justify-content: center; gap: 22px; }
.hero-links a { display: flex; flex-direction: column; align-items: center; gap: 6px; color: #fff; font-size: 12px; opacity: .9; }
.hero-links a:hover { opacity: 1; text-decoration: none; }
.hero-icon { width: 64px; height: 64px; display: block; transition: opacity .15s; }
.hero-links a:hover .hero-icon { opacity: .8; }
.hero .role { font-size: 24px; font-weight: 400; margin: 16px 0 6px; }
.hero .email { font-size: 15px; margin: 0; }

/* -------------------------------------------------------------- about */
.about { display: grid; grid-template-columns: 1fr 240px; gap: 48px; align-items: start; }
.about p { margin: 0 0 14px; }
.portrait { width: 240px; border-radius: 6px; margin-top: 44px; }

/* ------------------------------------------------------------- banner */
.banner-wrap { padding: 0 0 48px; }
.banner {
  display: flex; gap: 14px; align-items: flex-start;
  background: #fff8db; border: 1px solid #f3dd8a; border-left: 5px solid #e6b800;
  border-radius: 6px; padding: 16px 20px;
}
.banner p { margin: 0; }
.banner .badge {
  flex: none; background: #e6b800; color: #3a2e00; font-family: Montserrat, sans-serif; font-weight: 600;
  font-size: 11px; letter-spacing: 1px; text-transform: uppercase; border-radius: 4px; padding: 3px 8px; margin-top: 3px;
}

/* --------------------------------------------------------------- news */
.news { list-style: none; margin: 0; padding: 0; }
.news li { display: grid; grid-template-columns: 96px 1fr; gap: 16px; padding: 7px 0; border-bottom: 1px solid var(--line); }
.news li:last-child { border-bottom: 0; }
.news .date { font-weight: 700; white-space: nowrap; }
.news .ref { margin-left: 4px; font-size: 14px; }
.talks { list-style: none; margin: 0; padding: 0; }
.talks li { display: grid; grid-template-columns: 96px 1fr; gap: 16px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.talks li:last-child { border-bottom: 0; }
.talks .date { font-weight: 700; white-space: nowrap; }
.talks .venue { color: var(--muted); font-size: 15px; }
.more-news { margin-top: 12px; }
.more-news > summary { cursor: pointer; color: var(--accent); font-weight: 700; padding: 6px 0; }

/* ---------------------------------------------------------- transfers */
.transfers { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; margin-top: 20px; }
.transfer { border: 1px solid var(--line); border-radius: 8px; background: #fff; overflow: hidden; }
.transfer .thumb { height: 170px; background: var(--grey); border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: center; }
.transfer .thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.transfer .thumb.contain img { object-fit: contain; object-position: center; }
.transfer-body { padding: 18px 20px; }
.transfer-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.transfer h3 { font-size: 17px; margin: 0; }
.transfer .span { font-size: 13px; color: var(--muted); white-space: nowrap; }
.transfer p { font-size: 15px; margin: 8px 0 10px; }
.transfer-items { font-size: 14px; margin: -4px 0 10px; padding-left: 18px; }
.transfer-items li { margin: 3px 0; }

/* --------------------------------------------------------------- tabs */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 30px; }
.tabs button {
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 14px; font-size: 13px; font-weight: 500; color: var(--navy); cursor: pointer; white-space: nowrap;
}
.tabs button:hover { border-color: var(--navy); }
.tabs button[aria-selected="true"] { background: var(--navy); border-color: var(--navy); color: #fff; }
.tabs .count { font-size: 11px; background: var(--grey); color: var(--navy); border-radius: 999px; padding: 1px 7px; margin-left: 4px; }
.tabs button[aria-selected="true"] .count { background: rgba(255,255,255,.2); color: #fff; }
.sub { font-size: 14px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin: 8px 0 14px; }
.year { font-size: 18px; color: var(--navy); margin: 26px 0 6px; padding-bottom: 4px; border-bottom: 1px solid var(--line); }

/* -------------------------------------------------------- publications */
.pub-list { list-style: none; margin: 0; padding: 0; }
.pub { padding: 10px 0; scroll-margin-top: 80px; }
.pub.flash { animation: flash 3.6s ease-out; }
@keyframes flash { 0%, 40% { background: #fff3b0; } 100% { background: transparent; } }
.pub-title { font-weight: 700; font-size: 17px; line-height: 1.4; margin: 0; }
.pub-authors { font-size: 15px; }
.pub-venue { font-size: 15px; display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: baseline; }
.pub-venue .venue { font-style: italic; }
.pub-venue .award { color: var(--red); font-weight: 700; font-size: 14px; }
.pub-venue .note { color: var(--muted); font-size: 13px; }
.pub-links { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; align-items: flex-start; }
.pub-links a, .bib > summary {
  font-size: 12px; font-family: Montserrat, sans-serif; letter-spacing: .5px;
  border: 1px solid var(--line); border-radius: 4px; padding: 1px 8px; color: var(--navy); background: #fff;
}
.pub-links a:hover, .bib > summary:hover { background: var(--navy); color: #fff; text-decoration: none; }
.bib > summary { cursor: pointer; list-style: none; }
.bib > summary::-webkit-details-marker { display: none; }
.bib[open] { flex-basis: 100%; }
.bib pre {
  font-size: 12px; background: var(--grey); padding: 12px; border-radius: 4px; overflow-x: auto;
  margin: 8px 0 0; white-space: pre;
}

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; margin-bottom: 20px; }
.pub-card {
  border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #fff;
  display: flex; flex-direction: column; transition: box-shadow .2s;
}
.pub-card:hover { box-shadow: 0 6px 24px rgba(0,0,0,.08); }
.pub-card .thumb {
  height: 170px; background: var(--grey); display: flex; align-items: center; justify-content: center;
  border-bottom: 1px solid var(--line);
}
.pub-card .thumb img { max-width: 100%; max-height: 100%; object-fit: contain; }
.pub-card .thumb span { font-family: Montserrat, sans-serif; font-size: 28px; color: var(--navy); opacity: .5; }
.pub-card .pub-body { padding: 14px 16px 16px; }
.pub-card .pub-title { font-size: 16px; margin-bottom: 4px; }
.pub-card .pub-authors, .pub-card .pub-venue { font-size: 14px; }

/* ------------------------------------------------------------- footer */
.footer {
  background: var(--navy); color: rgba(255,255,255,.75); text-align: center; padding: 28px 24px;
  display: flex; flex-direction: column; gap: 6px; font-size: 14px;
}
.footer a { color: #fff; }

/* ------------------------------------------------------------- mobile */
@media (max-width: 760px) {
  body { font-size: 16px; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 50px; left: 0; right: 0; height: auto;
    flex-direction: column; background: var(--navy); padding: 8px 0;
  }
  .nav-links.open { display: flex; }
  .hero h1 { font-size: 44px; }
  .hero .role { font-size: 20px; }
  .about { grid-template-columns: 1fr; }
  .portrait { order: -1; margin: 0 auto; width: 180px; }
  .news li, .talks li { grid-template-columns: 1fr; gap: 0; }
  .hero-links { gap: 14px; }
  .hero-icon { width: 52px; height: 52px; }
  .banner { flex-direction: column; gap: 8px; }
  .tabs { gap: 6px; }
  .tabs button { padding: 6px 11px; font-size: 12px; }
}

/* ------------------------------------------------------- project pages */
.page-hero { padding: 40px 24px 44px; }
.page-hero h1 { font-size: 52px; margin-bottom: 4px; }
.page-hero .role { margin-top: 0; }
.wrap.narrow { max-width: 860px; }
.figure { margin: 0 0 24px; text-align: center; }
.figure img { max-width: 100%; border-radius: 6px; }
.section h3 { font-family: Montserrat, sans-serif; font-size: 18px; margin: 28px 0 10px; }
.stats { list-style: none; margin: 0; padding: 0; }
.stats li { padding: 6px 0; border-bottom: 1px solid var(--line); }
.stats li:last-child { border-bottom: 0; }
.stats strong { color: var(--navy); }
.stats span { color: var(--muted); font-size: 15px; }
pre.cite { font-size: 13px; background: #fff; border: 1px solid var(--line); padding: 14px; border-radius: 6px; overflow-x: auto; }
.warning { background: #fff8db; border-left: 4px solid #e6b800; padding: 10px 14px; border-radius: 4px; font-size: 15px; }