:root{
  --bg: #0b0c10;
  --bg2:#0f1220;
  --text:#eef0ff;
  --muted:#b7bdd9;
  --card: rgba(255,255,255,.06);
  --border: rgba(255,255,255,.12);
  --shadow: 0 18px 55px rgba(0,0,0,.42);
  --accent:#7c3aed;
  --accent2:#22c55e;
  --radius: 18px;
  --container: 1120px;
  --header-h: 74px;
  color-scheme: dark;
}
.iconLink svg { width: 20px; height: 20px; display: block; fill: currentColor; }

html.light{
  --bg: #fbfbfe;
  --bg2:#f3f6ff;
  --text:#0b1020;
  --muted:#4a536a;
  --card: rgba(0,0,0,.04);
  --border: rgba(0,0,0,.10);
  --shadow: 0 16px 50px rgba(0,0,0,.12);
  color-scheme: light;
}

*{ box-sizing:border-box; }
html, body{ height:100%; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  padding-top: var(--header-h);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(900px 420px at 15% -10%, rgba(124,58,237,.25), transparent 55%),
    radial-gradient(900px 420px at 90% 0%, rgba(34,197,94,.22), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  line-height:1.55;
}

.container{ width:min(var(--container), calc(100% - 2rem)); margin:0 auto; }

.skip-link{
  position:absolute;
  left:-999px;
  top:10px;
  padding:.65rem .9rem;
  border-radius:999px;
  background: var(--card);
  border:1px solid var(--border);
  color:var(--text);
  z-index:999;
}
.skip-link:focus{ left:10px; }

/* Fixed top bar */
.topbar{
  position:fixed;
  top:0; left:0; right:0;
  z-index:50;
  backdrop-filter: blur(14px);
  background: rgba(10,12,18,.55);
  border-bottom:1px solid rgba(255,255,255,.06);
}
html.light .topbar{ background: rgba(250,250,255,.72); border-bottom-color: rgba(0,0,0,.06); }

.topbar__inner{
  height: var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
}

.brand{
  display:flex;
  align-items:center;
  gap:.65rem;
  text-decoration:none;
  color: var(--text);
  font-weight: 850;
  letter-spacing:.2px;
}

/* Brand mark (DNA icon) */
.brand__icon,
.brand__dot{
  width: 36px; height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(124,58,237,.45), rgba(34,197,94,.35));
  border:1px solid var(--border);
  box-shadow: 0 10px 26px rgba(0,0,0,.20);
  display:grid;
  place-items:center;
}

.brand__icon svg{
  width: 22px;
  height: 22px;
  stroke: var(--text);
  fill: none;
  stroke-width: 2.1;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .92;
}

.brand__name{ white-space:nowrap; }

.nav{
  display:flex;
  align-items:center;
  gap:.25rem;
}

.nav a{
  text-decoration:none;
  color: var(--muted);
  font-weight: 750;
  padding:.55rem .75rem;
  border-radius: 999px;
}
.nav a:hover{ color: var(--text); background: rgba(255,255,255,.06); }

.topbar__actions{ display:flex; align-items:center; gap:.5rem; }

.btn{
  border:1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: .6rem .95rem;
  font-weight: 800;
  text-decoration:none;
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  cursor:pointer;
}

.btn:hover{ transform: translateY(-1px); }

.btn--ghost{ background: transparent; }

.btn--icon{
  width: 42px;
  height: 42px;
  padding:0;
  display:grid;
  place-items:center;
}

.topbar__menu{ display:none; }

.icon{ width: 18px; height: 18px; display:inline-block; }
.icon svg{ width:100%; height:100%; display:block; }

.mobileNav{
  border-top: 1px solid rgba(255,255,255,.06);
  padding: .35rem 0 1rem;
}
html.light .mobileNav{ border-top-color: rgba(0,0,0,.06); }

.mobileNav__inner a{
  display:block;
  padding:.75rem .65rem;
  border-radius: 12px;
  text-decoration:none;
  color: var(--muted);
  font-weight:800;
}
.mobileNav__inner a:hover{ background: rgba(255,255,255,.06); color: var(--text); }

/* Sections */
.page{ padding: 0 0 2.5rem; }
.section{ padding: 3.1rem 0; }
.hero{ padding: 2.4rem 0 1.4rem; }
section[id]{ scroll-margin-top: calc(var(--header-h) + 18px); }

.kicker{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  padding:.3rem .65rem;
  border-radius:999px;
  border:1px solid var(--border);
  background: var(--card);
  color: var(--muted);
  font-weight: 850;
  letter-spacing:.2px;
  width: fit-content;
  margin:0;
}

h1{ font-size: clamp(2.1rem, 3vw + 1.2rem, 3.35rem); line-height: 1.08; margin: .75rem 0 .65rem; }

.h3{ font-size: 1.05rem; margin:0 0 .6rem; }

.lead{ margin:0 0 1rem; color: var(--muted); font-size: 1.08rem; }

.muted{ color: var(--muted); }
.small{ font-size:.92rem; }

.hero__grid{
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 1.2rem;
  align-items:start;
}

/* Nudge portrait down a bit so it aligns with the name/lead text block */
.hero__media{ padding-top: 1.35rem; }

.hero__media .card{ padding:0; overflow:hidden; }
.hero__media img{ width:100%; height:auto; display:block; }

.pillRow{ display:flex; flex-wrap:wrap; gap:.55rem; margin: 1rem 0 1.05rem; }
.pill{
  padding:.35rem .7rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-weight: 750;
  font-size: .92rem;
}

.callout{
  border:1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(124,58,237,.14), rgba(34,197,94,.10));
  padding: 1rem 1.05rem;
  box-shadow: var(--shadow);
}

.impactCard{ margin-top: 1rem; }

.list{ margin:.5rem 0 0; padding-left: 1.1rem; }
.list li{ margin:.35rem 0; }

.hero__links{ display:flex; flex-wrap:wrap; gap:.55rem; margin-top: 1.05rem; }

.linkChip{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:.55rem .85rem;
  border-radius: 999px;
  border:1px solid var(--border);
  background: var(--card);
  color: var(--text);
  text-decoration:none;
  font-weight: 800;
}
.linkChip:hover{ transform: translateY(-1px); }

.sectionHead{ display:flex; align-items:flex-end; justify-content:space-between; gap:1rem; }
.sectionHead h2{ margin:0; font-size: clamp(1.35rem, .85rem + 1vw, 1.9rem); letter-spacing:.2px; }
.sectionHead p{ margin:.25rem 0 0; }

.grid{ display:grid; gap: 1rem; }
.cols-2{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3{ grid-template-columns: repeat(3, minmax(0, 1fr)); }

.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem;
  box-shadow: var(--shadow);
}

.tagRow{ display:flex; flex-wrap:wrap; gap:.5rem; margin:.35rem 0 0; }
.tag{
  padding:.28rem .6rem;
  border-radius: 999px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  font-weight: 750;
  color: var(--muted);
  font-size: .92rem;
}

.card--media{ padding:0; overflow:hidden; }
.card--media__img img{ width:100%; height: 160px; object-fit: cover; display:block; }
.card--media__body{ padding: 1.05rem 1.1rem 1.1rem; }
.card--media__body h3{ margin:0 0 .35rem; }

/* Consistent space between section heading and content */
.sectionHead{ margin-bottom: 1rem; }

/* ✅ FIX: Experience card spacing matches Publications (.9rem) */
.timeline{
  display:grid;
  gap:.9rem;      /* same as .pubList */
  margin-top: 0;  /* keep your reverted heading spacing behavior */
}
/* Robust fallback spacing (won't hurt even if gap works) */
.timeline > .card + .card{
  margin-top:.9rem;
}

.filters{ margin-top: 0; }   /* was 1rem */
.pubList{ margin-top: 0; }   /* was 1rem */

.tl__meta{ display:flex; gap:.65rem; align-items:center; flex-wrap:wrap; }
.badge{
  padding:.25rem .6rem;
  border-radius:999px;
  background: rgba(124,58,237,.22);
  border:1px solid rgba(124,58,237,.35);
  color: var(--text);
  font-weight: 850;
  font-size:.9rem;
}

/* Experience cards with institution image on the right */
.tl--withMedia{
  display:grid;
  grid-template-columns: 1fr 220px;
  gap: 1rem;
  align-items:center;
}

.tl__aside{ align-self:stretch; display:flex; }
.orgImg{
  width: 100%;
  height: 135px;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--border);
  display:block;
}

/* Publications */
.filters{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:1rem;
  flex-wrap:wrap;
  margin-top:1rem;
}

.filters__left{ display:flex; gap:.85rem; flex-wrap:wrap; align-items:end; }

.field{ display:flex; flex-direction:column; gap:.35rem; min-width: 240px; }
.field span{ font-weight: 850; color: var(--muted); font-size:.92rem; }

.input, .select{
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius: 14px;
  padding: .65rem .8rem;
  font-weight: 700;
  outline:none;
}

.input:focus, .select:focus{ box-shadow: 0 0 0 4px rgba(124,58,237,.20); }

/* Make year dropdown readable in dark mode */
.select{ color-scheme: dark; }
html.light .select{ color-scheme: light; }
.select option{ background: var(--bg); color: var(--text); }
html.light .select option{ background: #fff; color: #0b1020; }
.select option:checked{ background: var(--text); color: var(--bg); }

.btn--small{ padding:.62rem .9rem; }

.pubList{ display:grid; gap:.9rem; margin-top:1rem; }

.pub{
  padding: 1.05rem 1.1rem;
}

.pub h3{ margin:.05rem 0 .4rem; font-size: 1.05rem; }
.pub__meta{ display:flex; gap:.6rem; flex-wrap:wrap; align-items:center; }
.pub__meta .muted{ font-weight: 700; }

.pub__links{ display:flex; flex-wrap:wrap; gap:.55rem; margin-top:.75rem; }

.chip{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  padding:.45rem .65rem;
  border-radius: 999px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  text-decoration:none;
  font-weight: 800;
  font-size:.92rem;
}

.chip:hover{ transform: translateY(-1px); }

details.bib{ margin-top:.7rem; }
details.bib summary{ cursor:pointer; font-weight: 850; color: var(--muted); }
pre{
  margin:.6rem 0 0;
  padding:.75rem;
  border-radius: 14px;
  border:1px solid var(--border);
  background: rgba(0,0,0,.25);
  overflow:auto;
  white-space:pre;
}
html.light pre{ background: rgba(0,0,0,.04); }

/* Teaching / Skills */
.bullets{ margin:.5rem 0 0; padding-left: 1.1rem; }
.bullets li{ margin:.35rem 0; }
.teaching-img{ width:100%; border-radius: 14px; display:block; }

/* Used by the Teaching section illustration */
.mediaImg{
  width: 100%;
  height: 260px;
  max-height: 260px;
  object-fit: cover;
  border-radius: 14px;
  display:block;
}

/* Teaching illustration: keep it from stretching the card */
.mediaImg{
  width:100%;
  height: 260px;
  max-height: 260px;
  object-fit: cover;
  border-radius: 14px;
  display:block;
}

/* Timeline: add institution media on the right */
.tl--withMedia{
  display:grid;
  grid-template-columns: 1fr 220px;
  gap: 1rem;
  align-items:center;
}
.tl__aside{ justify-self:end; }
.orgImg{
  width:100%;
  height: 135px;
  object-fit: cover;
  border-radius: 14px;
  border:1px solid var(--border);
  display:block;
}

/* Footer */
.siteFooter{
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 1.4rem 0 2rem;
}
html.light .siteFooter{ border-top-color: rgba(0,0,0,.06); }

.footerCard{ padding: 1.05rem 1.15rem; }

.footer__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 1rem;
  flex-wrap:wrap;
}

.footerLinks{ display:flex; gap:.7rem; flex-wrap:wrap; }

.iconLink{
  width: 48px;
  height: 48px;
  display:grid;
  place-items:center;
  border-radius: 999px;
  border:1px solid var(--border);
  background: var(--card);
  color: var(--text);
  text-decoration:none;
}
.iconLink .icon{ width:24px; height:24px; }

.footerRight{ display:flex; flex-direction:column; gap:.35rem; align-items:flex-end; }

.backTop{ color: var(--muted); text-decoration:none; font-weight: 850; }
.backTop:hover{ color: var(--text); }

/* Responsive */
@media (max-width: 960px){
  .hero__grid{ grid-template-columns: 1fr; }
  .hero__media{ padding-top: 0; }
}

@media (max-width: 860px){
  .nav{ display:none; }
  .topbar__menu{ display:grid; }
}

@media (max-width: 860px){
  .cols-3{ grid-template-columns: 1fr; }
  .cols-2{ grid-template-columns: 1fr; }
  .field{ min-width: 220px; }

  .tl--withMedia{ grid-template-columns: 1fr; }
  .tl__aside{ width: 100%; justify-self:stretch; }
  .orgImg{ height: 190px; }
  .footerRight{ align-items:flex-start; }
}

/* About card placed inside hero (avoid section/container spacing) */
.heroAbout{ margin-top: 1rem; }