:root{
  --bg: #0b1020;
  --bg-elev: #11162a;
  --text: #e5e7eb;
  --muted: #a5b4fc;
  --brand: #0ea5e9;
  --brand-2: #22d3ee;
  --border: #1f253d;
  --card: #0f152b;
  --shadow: 0 10px 30px rgba(2,6,23,.35);
}

html[data-theme="light"]{
  --bg: #ffffff;
  --bg-elev: #f6f7fb;
  --text: #111827;
  --muted: #475569;
  --brand: #0ea5e9;
  --brand-2: #22d3ee;
  --border: #e5e7eb;
  --card: #ffffff;
  --shadow: 0 10px 30px rgba(2,6,23,.08);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.container{width:100%;max-width:1400px;margin:0 auto;padding:0 20px}
.section{padding:64px 0}
.section.alt{background:var(--bg-elev)}
.section-title{font-size:28px;margin:0 0 24px 0}

.skip-link{
  position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;
}
.skip-link:focus{position:static;width:auto;height:auto;padding:8px 12px;background:var(--brand);color:#fff}

.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,0.04);backdrop-filter: blur(8px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:64px}
.brand{font-weight:700;text-decoration:none;color:var(--text)}

.primary-nav{position:relative}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:transparent;border:0;color:var(--text);cursor:pointer}
.nav-toggle .bar{width:22px;height:2px;background:var(--text)}
.nav-list{display:flex;gap:16px;list-style:none;margin:0;padding:0}
.nav-link{color:var(--text);text-decoration:none;padding:8px 10px;border-radius:8px;transition:all 0.3s ease}
.nav-link:hover{background:var(--bg-elev)}
.nav-link.active{font-weight:600;font-size:1.1em;color:var(--brand)}

.theme-toggle{margin-left:12px;background:transparent;border:1px solid var(--border);border-radius:10px;padding:6px;cursor:pointer;color:var(--text)}
.theme-toggle .icon{width:20px;height:20px;display:block}

.hero{padding-top:48px}
.hero-inner{display:grid;grid-template-columns:140px 1fr;gap:24px;align-items:start}
.hero-avatar{margin-top:40px}
.avatar-container{width:140px;height:140px;border-radius:12px;overflow:hidden;background:var(--bg-elev);border:1px solid var(--border);box-shadow:var(--shadow);margin-bottom:16px}
/* .avatar-container img{width:100%;height:100%;object-fit:cover;object-position:top} */
.hero-content .title{font-size:32px;margin:0 0 8px 0}
.hero-content .subtitle{margin:0 0 12px 0;color:var(--muted)}
.hero-content .description{margin:0 0 16px 0}
.socials{display:flex;gap:10px;flex-direction:column;justify-content:flex-start}
.social{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 12px;border:1px solid var(--border);border-radius:10px;color:var(--brand);text-decoration:none;min-width:auto}
.social:hover{color:var(--brand-2);border-color:var(--brand-2)}
.social .icon{width:18px;height:18px;flex-shrink:0}
.social-text{font-size:14px;font-weight:500}

.timeline{list-style:none;margin:0;padding:0;display:grid;gap:10px;max-height:400px;overflow-y:auto;border:1px solid var(--border);border-radius:12px;padding:20px}
.timeline li{display:flex;gap:12px;align-items:center;padding:10px 12px;border:1px solid var(--border);border-radius:12px;background:var(--card)}
.timeline .time{font-weight:600;color:var(--brand)}
.timeline .event{opacity:.9;font-weight:600}
.timeline-link{color:#4ade80 !important}
.timeline-link:hover{color:#22c55e !important}

.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{border:1px solid var(--border);background:var(--card);border-radius:14px;padding:16px;box-shadow:var(--shadow)}

.pub-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.pub-item{border:1px solid var(--border);background:var(--card);border-radius:14px;padding:16px}
.pub-content{display:grid;grid-template-columns:480px 1fr;gap:24px;align-items:start}
.pub-image{width:480px;border-radius:12px;overflow:hidden;background:var(--bg-elev);border:1px solid var(--border)}
.pub-image img{width:100%;height:auto;display:block}
.pub-details{flex:1}
.pub-title{font-weight:600;margin-bottom:6px}
.pub-authors{color:var(--muted);margin-bottom:8px}
.badge{display:inline-block;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-radius:9999px;padding:4px 10px;font-size:12px}
.pub-links a{margin-right:12px}

/* Research tabs */
.research-tabs{display:flex;gap:14px;margin:0 0 20px 0;flex-wrap:wrap}
.research-tab{appearance:none;border:1px solid var(--border);background:var(--card);color:var(--text);padding:10px 28px !important;border-radius:12px !important;cursor:pointer;font-size:14px !important;line-height:1.1;display:inline-flex;align-items:center;justify-content:center;min-height:36px}
.research-tab:hover{border-color:var(--brand);color:var(--brand)}
.research-tab.is-active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent}

/* Research list layout similar to publications */
.research-list{grid-template-columns:1fr}

.team{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.team-item{display:flex;gap:20px;border:2px solid var(--border);background:var(--card);border-radius:14px;padding:0;box-shadow:var(--shadow);align-items:stretch}
.team-avatar{width:120px;border-radius:14px 0 0 14px;overflow:hidden;background:var(--bg-elev);border-right:1px solid var(--border);flex-shrink:0}
.team-avatar img{width:100%;height:100%;object-fit:cover}
.team-content{flex:1;padding:20px;display:flex;flex-direction:column}
.team-info{margin-bottom:8px}
.team-name{font-weight:600;font-size:18px;margin-bottom:4px}
.team-role{color:var(--brand);font-weight:500;font-size:14px;margin-bottom:6px}
.team-desc{color:var(--muted);margin-bottom:6px}
.team-period{color:var(--text-muted);font-size:12px}
.team-intro{color:var(--muted);margin-bottom:24px;font-size:16px}
.subsection-title{font-size:22px;margin:32px 0 16px 0;color:var(--text);font-weight:600}

/* Make team cards clickable when a data-url is present, without changing layout */
.team-item[data-url]{cursor:pointer}
.team-item[data-url]:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}

.services, .talks{list-style:disc;margin:0;padding-left:18px}

/* Funders and Collaborators section */
.funders-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:32px}
.funder-item{display:flex;align-items:center;justify-content:center;padding:24px;background:var(--card);border:1px solid var(--border);border-radius:12px;transition:all 0.3s ease}
.funder-item:hover{border-color:var(--brand);box-shadow:var(--shadow)}
.funder-item img{max-width:100%;max-height:80px;width:auto;height:auto;object-fit:contain}

.site-footer{border-top:1px solid var(--border);padding:24px 0;margin-top:40px;background:var(--bg-elev)}
.footer-inner{display:flex;justify-content:space-between;align-items:center}
.back-to-top{text-decoration:none;color:var(--brand)}

@media (max-width: 980px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .team{grid-template-columns:1fr}
  .funders-grid{grid-template-columns:repeat(2,1fr);gap:24px}
}
@media (max-width: 640px){
  .hero-inner{grid-template-columns:1fr}
  .avatar-container{width:96px;height:96px;border-radius:8px}
  .hero-avatar .socials{justify-content:flex-start}
  .nav-toggle{display:flex}
  .nav-list{position:absolute;right:0;top:120%;flex-direction:column;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:10px;display:none;min-width:220px}
  .nav-list.open{display:flex}
  .pub-content{grid-template-columns:1fr;gap:12px}
  .pub-image{width:100%}
  .team-item{flex-direction:column;text-align:center;gap:12px}
  .team-avatar{width:100%;height:120px;border-radius:14px 14px 0 0;border-right:none;border-bottom:1px solid var(--border)}
  .team-content{padding:16px}
  .funders-grid{grid-template-columns:1fr;gap:20px}
  .funder-item{padding:20px}
  .funder-item img{max-height:60px}
}
a{color:var(--brand);text-decoration:none}
a:visited{color:var(--brand)}
a:hover{color:var(--brand-2);text-decoration:none}
a:active{color:var(--brand-2)}
a:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}