:root {
  --bg: #ffffff;
  --text: #1d1d1f;
  --muted: #5f6368;
  --border: #e3e3e6;
  --accent: #1f4e8c;
  --accent-soft: #eaf0f8;
  --code-bg: #f6f7f9;
  --note: #9a3412;
  --note-bg: #fff1e6;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141517;
    --text: #e6e6e8;
    --muted: #a0a4ab;
    --border: #2c2e33;
    --accent: #8db4ea;
    --accent-soft: #1d2a3b;
    --code-bg: #1c1e22;
    --note: #fdba74;
    --note-bg: #3a2414;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2 { line-height: 1.25; }
h1 { font-size: 2rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.35rem; margin: 2.5rem 0 1rem; }

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 16px;
}

main.container { padding-top: 2.5rem; padding-bottom: 3rem; }

.muted { color: var(--muted); }

/* Header & nav */
.site-header { border-bottom: 1px solid var(--border); }

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.site-title { font-weight: 700; font-size: 1.1rem; color: var(--text); }

.nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav ul a { color: var(--muted); }
.nav ul a:hover, .nav ul a[aria-current="page"] { color: var(--text); }
.nav ul a[aria-current="page"] { font-weight: 600; }

/* Homepage profile */
.profile {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.profile-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.role { margin: 0 0 0.75rem; color: var(--muted); }

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.news { padding-left: 0; list-style: none; }
.news li { margin-bottom: 0.4rem; }
.news-date { display: inline-block; min-width: 5.5rem; color: var(--muted); font-variant-numeric: tabular-nums; }

/* Education & experience: two columns, each entry a badge + institution,
   then a small role line with italic dates on the right */
.cv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 2.5rem;
  margin: 2.25rem 0 0.5rem;
}
.cv-grid h2 { font-size: 1.1rem; margin: 0 0 0.6rem; }
.cv-list { margin: 0; padding: 0; list-style: none; }
.cv-entry { margin-bottom: 0.7rem; }
.cv-org { display: flex; align-items: center; gap: 0.45rem; line-height: 1.45; }
.cv-logo { display: block; flex-shrink: 0; width: 18px; height: 18px; border-radius: 3px; object-fit: contain; }
.cv-logo-blank { background: var(--border); }
.cv-sub { padding-left: calc(18px + 0.45rem); font-size: 0.8rem; line-height: 1.5; }
.cv-meta { display: flex; gap: 0.75rem; }
.cv-dates { margin-left: auto; margin-top: auto; white-space: nowrap; }

/* Publications */
.year-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.25rem 0 0.75rem;
  border-bottom: 1px solid var(--border);
}

.year-nav a {
  padding: 0.15rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.year-nav a:hover { background: var(--accent-soft); text-decoration: none; }

.pub-year { scroll-margin-top: 1rem; }
.pub-year h2 a { color: var(--text); }

.pub-list { margin: 0; padding: 0; list-style: none; }

.pub { margin-bottom: 1.5rem; }
.pub-title { font-weight: 600; }
.pub-title a { color: var(--text); }
.pub-title a:hover { color: var(--accent); }
.pub-authors, .pub-venue { font-size: 0.95rem; }
.pub-venue { color: var(--muted); }

.pub-note {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0 0.45rem;
  border-radius: 4px;
  background: var(--note-bg);
  color: var(--note);
  font-size: 0.8rem;
  font-weight: 600;
  font-style: normal;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.4rem;
}

.pill {
  display: inline-block;
  padding: 0 0.6rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--accent);
  cursor: pointer;
}

.pill:hover { background: var(--accent-soft); text-decoration: none; }

.bibtex { line-height: 0; }  /* keep the closed toggle aligned with the link pills */
.bibtex summary { list-style: none; vertical-align: top; }
.bibtex summary::-webkit-details-marker { display: none; }
.bibtex[open] { flex-basis: 100%; }

.bibtex pre {
  margin: 0.5rem 0 0;
  padding: 0.75rem 1rem;
  overflow-x: auto;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.5;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  h1 { font-size: 1.6rem; }
  .profile { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .profile-photo { width: 140px; height: 140px; }
  .cv-grid { grid-template-columns: 1fr; }
}