:root {
  --bg:      #0f1117;
  --surface: #1a1d27;
  --border:  #252836;
  --text:    #cdd6f4;
  --muted:   #6c7086;
  --accent:  #89b4fa;
  --green:   #a6e3a1;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.75;
}

/* ── Nav ─────────────────────────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 12px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
}
.nav-name { color: var(--accent); font-weight: 700; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 28px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

/* ── Main layout ─────────────────────────────────────────────────────────── */
main {
  max-width: 840px;
  margin: 0 auto;
  padding: 64px 32px;
}
section { margin-bottom: 80px; }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
}
.hero-text { flex: 1; }
.hero-photo {
  width: 148px;
  height: 148px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
  flex-shrink: 0;
}

h1 {
  font-size: 2.4em;
  font-weight: 700;
  margin-bottom: 8px;
}
.hero-role { color: var(--muted); margin-bottom: 20px; }
.hero-summary { color: var(--text); max-width: 620px; margin-bottom: 24px; }

.contact-links { display: flex; gap: 24px; flex-wrap: wrap; }
.contact-links a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.contact-links a:hover { border-color: var(--accent); }

/* ── Section headings ────────────────────────────────────────────────────── */
h2 {
  font-size: 0.9em;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 36px;
}
.section-marker { color: var(--accent); margin-right: 8px; }

/* ── Entries (work & education) ──────────────────────────────────────────── */
.entry {
  margin-bottom: 44px;
  padding-left: 20px;
  border-left: 2px solid var(--border);
  transition: border-color 0.2s;
}
.entry:hover { border-color: var(--accent); }

.entry-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
}
.entry-org   { color: var(--accent); font-weight: 700; }
.entry-loc   { color: var(--muted); font-size: 0.9em; }

.role { margin-bottom: 20px; }
.role:last-child { margin-bottom: 0; }

.role-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}
.role-title  { color: var(--text); font-weight: 600; }
.role-period { color: var(--muted); font-size: 0.9em; }

ul { padding-left: 18px; margin-bottom: 10px; }
li { color: var(--text); margin-bottom: 3px; }
li::marker { color: var(--accent); }

.thesis {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.92em;
  font-style: italic;
}
.thesis-label { color: var(--accent); font-style: normal; margin-right: 4px; }

/* ── Tools / tags ────────────────────────────────────────────────────────── */
.tools { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.tag {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.85em;
}

/* ── Skills ──────────────────────────────────────────────────────────────── */
.skill-row {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.skill-row:last-child { border-bottom: none; }
.skill-cat  { color: var(--accent); }
.skill-desc { color: var(--text); }
.skill-desc a { color: var(--accent); text-decoration: none; }
.skill-desc a:hover { text-decoration: underline; }

/* ── Publications ────────────────────────────────────────────────────────── */
.pub-entry {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.pub-entry:last-of-type { border-bottom: none; }

.pub-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 110px;
  align-items: flex-start;
  padding-top: 2px;
}

.pub-type-journal     { color: var(--accent);  border-color: var(--accent); }
.pub-type-conference  { color: var(--green);   border-color: var(--green); }
.pub-type-chapter     { color: var(--muted);   border-color: var(--muted); }

.pub-body { flex: 1; }

.pub-title {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  display: block;
  margin-bottom: 6px;
  line-height: 1.5;
  transition: color 0.2s;
}
a.pub-title:hover { color: var(--accent); }

.pub-authors {
  color: var(--muted);
  font-size: 0.9em;
  margin-bottom: 4px;
}
.pub-authors strong { color: var(--text); }

.pub-venue { color: var(--muted); font-size: 0.88em; font-style: italic; }

.scholar-link {
  display: inline-block;
  margin-top: 24px;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9em;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.scholar-link:hover { border-color: var(--accent); }

/* ── Repo cards ──────────────────────────────────────────────────────────── */
.repos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.repo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 18px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.2s;
}
.repo-card:hover { border-color: var(--accent); }
.repo-name { color: var(--accent); font-weight: 700; }
.repo-desc { color: var(--muted); font-size: 0.9em; flex: 1; }
.repo-meta { display: flex; gap: 10px; align-items: center; }

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer {
  text-align: center;
  color: var(--muted);
  padding: 40px 32px;
  border-top: 1px solid var(--border);
  font-size: 0.88em;
}
footer a { color: var(--accent); text-decoration: none; }
.muted { color: var(--muted); }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  nav { padding: 12px 16px; }
  .nav-links { display: none; }
  main { padding: 40px 16px; }
  h1 { font-size: 1.8em; }
  .hero-inner { flex-direction: column-reverse; align-items: center; gap: 24px; }
  .hero-photo { width: 110px; height: 110px; }
  .entry-header,
  .role-header { flex-direction: column; gap: 2px; }
  .skill-row { grid-template-columns: 1fr; gap: 4px; }
}