/* ---------- Tokens ---------- */
:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1c1f24;
  --muted: #5d6470;
  --line: #e6e2da;
  --accent: #1f4e79;        /* deep academic blue */
  --accent-soft: #e8eff6;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --radius: 10px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --surface: #171b21;
    --text: #e6e8eb;
    --muted: #9aa3ae;
    --line: #2a3038;
    --accent: #8cb8e6;
    --accent-soft: #1c2733;
  }
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.25; }
h2 {
  font-size: 1.55rem;
  margin: 0 0 1rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--line);
}
h3 {
  font-size: 1.05rem;
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  margin: 1.8rem 0 .8rem;
}
p { margin: 0 0 1rem; }
.muted, .note { color: var(--muted); }
.note { font-size: .92rem; margin-top: -.4rem; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .8rem clamp(16px, 4vw, 40px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { font-family: var(--serif); font-weight: 600; color: var(--text); font-size: 1.05rem; white-space: nowrap; }
.nav { display: flex; gap: 1.3rem; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { color: var(--muted); font-size: .92rem; white-space: nowrap; }
.nav a:hover { color: var(--accent); text-decoration: none; }

/* ---------- Layout ---------- */
.layout {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(24px, 5vw, 56px) clamp(16px, 4vw, 40px);
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

/* ---------- Profile card ---------- */
.profile {
  position: sticky; top: 88px;
  text-align: center;
}
.photo {
  width: 190px; height: 190px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--surface);
  box-shadow: 0 6px 24px rgba(0,0,0,.12);
}
.name { font-size: 1.6rem; margin: 1.1rem 0 .3rem; }
.role { color: var(--accent); font-weight: 600; margin: 0 0 .7rem; letter-spacing: .02em; }
.affil { font-size: .93rem; line-height: 1.5; margin-bottom: .5rem; }
.loc { font-size: .9rem; color: var(--muted); }

.links {
  list-style: none; padding: 0; margin: 1.2rem 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: .5rem;
}
.links a {
  display: flex; align-items: center; justify-content: center; gap: .45rem;
  padding: .5rem .6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-size: .9rem;
  transition: border-color .15s, transform .15s;
}
.links a:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-1px); }
.links svg { width: 18px; height: 18px; flex: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  width: 100%;
  padding: .75rem 1rem;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  transition: filter .15s;
}
.btn:hover { filter: brightness(1.1); text-decoration: none; }
.btn svg { width: 18px; height: 18px; }

/* ---------- Sections ---------- */
section { margin-bottom: 3.2rem; }

.tags { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.tags li {
  padding: .3rem .8rem;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  font-size: .88rem;
}

/* Publications / talks */
.pubs { list-style: none; padding: 0; margin: 0; }
.pub {
  display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.pub:last-child { border-bottom: 0; }
.pub p { margin: 0 0 .25rem; }
.year { font-weight: 600; color: var(--muted); font-size: .92rem; padding-top: .1rem; }
.pub-title { font-family: var(--serif); font-size: 1.1rem; font-weight: 600; line-height: 1.35; }
.pub-authors { font-size: .95rem; }
.me { font-weight: 600; text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; }
.pub-venue { font-size: .92rem; color: var(--muted); font-style: italic; }
.pub-abstract { font-size: .92rem; color: var(--muted); margin-top: .4rem !important; }
.pub-links { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .5rem !important; }
.pub-links a {
  font-size: .8rem; font-weight: 600;
  padding: .15rem .6rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
}
.pub-links a:hover { background: var(--accent); color: var(--bg); text-decoration: none; }
.badge {
  display: inline-block; font-style: normal; font-size: .75rem; font-weight: 600;
  padding: .05rem .5rem; margin-right: .4rem;
  border-radius: 4px; background: var(--accent-soft); color: var(--accent);
}
.empty { color: var(--muted); font-style: italic; padding: .5rem 0; }

/* Timeline (education / positions) */
.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li {
  display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 1rem;
  padding: .7rem 0;
}
.timeline p { margin: 0; }
.when { color: var(--muted); font-size: .9rem; padding-top: .1rem; }
.what { font-weight: 600; }
.where { color: var(--muted); font-size: .95rem; }
.detail { font-size: .92rem; margin-top: .2rem !important; }

.plain { padding-left: 1.1rem; margin: 0; }
.plain li { margin-bottom: .45rem; }

.skills { display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: .5rem 1rem; margin: 0; }
.skills dt { font-weight: 600; }
.skills dd { margin: 0; color: var(--muted); }

.footer { border-top: 1px solid var(--line); padding-top: 1.2rem; font-size: .85rem; color: var(--muted); }
.print-only { display: none; }

/* ---------- Mobile ---------- */
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .profile { position: static; max-width: 420px; margin: 0 auto; }
  .brand { display: none; }
  .topbar { justify-content: center; }
}
@media (max-width: 520px) {
  .photo { width: 150px; height: 150px; }
  .pub { grid-template-columns: 1fr; gap: .2rem; }
  .timeline li { grid-template-columns: 1fr; gap: 0; }
  .skills { grid-template-columns: 1fr; gap: 0; }
  .skills dd { margin-bottom: .6rem; }
}

/* ---------- Print = CV ---------- */
@media print {
  :root { --bg: #fff; --surface: #fff; --text: #000; --muted: #444; --line: #ccc; --accent: #1f4e79; --accent-soft: #fff; }
  @page { margin: 16mm 14mm; }
  body { font-size: 10.5pt; }
  .topbar, .btn, .links, .pub-links, .pub-abstract, #talks .empty, .footer { display: none !important; }
  .layout { display: block; padding: 0; }
  .profile {
    position: static; display: grid; grid-template-columns: 90px 1fr; gap: 0 16px;
    text-align: left; align-items: center; margin-bottom: 18px;
  }
  .photo { grid-row: span 4; width: 90px; height: 90px; box-shadow: none; border: 0; }
  .name { margin: 0; font-size: 18pt; }
  .name br { display: none; }
  .role, .affil, .loc { margin: 0; }
  section { margin-bottom: 14px; }
  h2, h3 { break-after: avoid; }
  .pub, .timeline li { break-inside: avoid; }
  h2 { font-size: 13pt; margin-bottom: 6px; }
  h3 { margin: 10px 0 4px; }
  .pub { padding: 5px 0; border: 0; }
  .tags li { padding: 0; border-radius: 0; }
  .tags li:not(:last-child)::after { content: " ·"; }
  #talks:has(.empty) { display: none; }
  .print-only { display: block; }
}