*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  color-scheme: dark;
  --bg:             #18181b;
  --surface:        #27272a;
  --text:           #f4f4f5;
  --muted:          #a1a1aa;
  --accent:         #60a5fa;
  --accent-light:   #1e3a5f;
  --border:         #3f3f46;
  --text-secondary: #d4d4d8;
  --nav-bg:         rgba(24,24,27,.92);
  --max-w:          860px;
}

[data-theme="light"] {
  color-scheme: light;
  --bg:             #ffffff;
  --surface:        #f3f4f6;
  --text:           #111827;
  --muted:          #6b7280;
  --accent:         #2563eb;
  --accent-light:   #dbeafe;
  --border:         #e5e7eb;
  --text-secondary: #374151;
  --nav-bg:         rgba(255,255,255,0.92);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 15px;
}

/* ── Nav ── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-name {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
  text-decoration: none;
}
.nav-links { display: flex; gap: 24px; }
.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 400;
  transition: color .15s;
}
.nav-links a:hover  { color: var(--accent); }
.nav-links a.active { color: var(--text); font-weight: 500; }

/* ── Layout ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 56px 0; border-bottom: 1px solid var(--border); background: var(--bg); }
section:last-of-type { border-bottom: none; }
#news, #experience { background: var(--surface); }

h1.page-title {
  font-family: 'Lora', serif;
  font-size: 28px;
  font-weight: 600;
  padding: 56px 0 40px;
}

h2 {
  font-family: 'Lora', serif;
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--text);
}

h3 {
  font-family: 'Lora', serif;
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  font-style: normal;
}

/* ── Hero ── */
#about { padding-top: 64px; padding-bottom: 56px; }
.hero { display: flex; gap: 48px; align-items: flex-start; }
.hero-photo {
  flex-shrink: 0;
  width: 148px; height: 148px;
  border-radius: 10px;
  background: var(--accent-light);
  overflow: hidden;
  border: 3px solid var(--border);
}
.hero-photo img { width: 100%; height: 100%; object-fit: cover; }
.hero-photo-placeholder {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 48px; color: var(--accent);
  background: var(--accent-light);
}
.hero-info h1 {
  font-family: 'Lora', serif;
  font-size: 30px; font-weight: 600;
  margin-bottom: 4px;
}
.hero-title { color: var(--muted); font-size: 14px; margin-bottom: 16px; }
.hero-bio { font-size: 15px; line-height: 1.7; color: var(--text-secondary); margin-bottom: 20px; }
.hero-links { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-links a {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  text-decoration: none;
  color: var(--text);
  background: var(--surface);
  transition: border-color .15s, color .15s;
}
.hero-links a:hover { border-color: var(--accent); color: var(--accent); }

/* ── News ── */
.news-scroll {
  position: relative;
}
.news-scroll::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--surface));
  pointer-events: none;
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 210px;
  overflow-y: auto;
  padding-bottom: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.news-list::-webkit-scrollbar { width: 4px; }
.news-list::-webkit-scrollbar-track { background: transparent; }
.news-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.news-item { display: flex; gap: 16px; font-size: 14px; line-height: 1.55; }
.news-date {
  flex-shrink: 0; width: 80px;
  color: var(--muted); font-size: 13px; padding-top: 1px;
}
.news-text { color: var(--text-secondary); }
.news-text a { color: var(--accent); text-decoration: none; }
.news-text a:hover { text-decoration: underline; }

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 1px 7px; border-radius: 4px;
  font-size: 11px; font-weight: 500;
  margin-left: 4px; vertical-align: middle;
}
.badge-award { background: #3b2a0e; color: #fbbf24; }
.badge-new   { background: #0f2d1a; color: #4ade80; }

/* ── Publications ── */
.pub-list { display: flex; flex-direction: column; gap: 28px; }
.pub { display: flex; gap: 16px; }
.pub-year {
  flex-shrink: 0; width: 44px;
  font-size: 13px; color: var(--muted);
  padding-top: 3px; text-align: right;
}
.pub-title {
  font-size: 15px; font-weight: 500;
  color: var(--text); margin-bottom: 3px; line-height: 1.45;
}
.pub-authors { font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.pub-authors .me { color: var(--text); font-weight: 500; }
.pub-venue {
  font-size: 13px; color: #9ca3af;
  font-style: italic; margin-bottom: 7px;
}
.pub-venue .venue-name { font-style: normal; font-weight: 500; }
.pub-links { display: flex; flex-wrap: wrap; gap: 6px; }
.pub-link {
  font-size: 12px; padding: 2px 9px;
  border-radius: 4px; text-decoration: none;
  border: 1px solid var(--border);
  color: var(--accent); background: var(--surface);
  transition: background .15s, border-color .15s;
}
.pub-link:hover { background: var(--accent-light); border-color: var(--accent); }
.pub-award {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 12px; color: #fbbf24;
  background: #3b2a0e; border-radius: 4px;
  padding: 2px 8px; margin-bottom: 6px;
}

/* ── Section header with "see all" link ── */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 28px;
}
.section-header h2 { margin-bottom: 0; }
.see-all {
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}
.see-all:hover { text-decoration: underline; }

/* ── Experience ── */
.exp-list { display: flex; flex-direction: column; gap: 28px; }
.exp { display: flex; gap: 16px; align-items: flex-start; }
.exp-logo {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  overflow: hidden;
}
.exp-logo img {
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 6px;
}
.exp-logo-initial {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.exp-role { font-size: 15px; font-weight: 500; }
.exp-org  { font-size: 14px; color: var(--accent); margin-top: 1px; }
.exp-meta { font-size: 13px; color: var(--muted); margin-top: 2px; }
.exp-desc { font-size: 14px; color: var(--text-secondary); margin-top: 6px; line-height: 1.6; }
.exp-desc ul { padding-left: 18px; margin-top: 4px; }
.exp-desc li { margin-bottom: 3px; }

/* ── Service ── */
.service-list { display: flex; flex-direction: column; gap: 10px; }
.service-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  font-size: 14px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.service-item:last-child { border-bottom: none; }
.service-venue { color: var(--text-secondary); }
.service-years { flex-shrink: 0; color: var(--muted); font-size: 13px; }

/* ── Footer ── */
footer {
  text-align: center;
  padding: 32px 24px;
  font-size: 13px;
  color: var(--muted);
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--accent); }

/* ── Shared utility ── */
a.accent-link { color: var(--accent); text-decoration: none; }
a.accent-link:hover { text-decoration: underline; }

/* ── Theme toggle ── */
.theme-toggle {
  background: none; border: none; cursor: pointer;
  color: var(--muted); padding: 4px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px;
  transition: color .15s, background .15s;
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--text); background: var(--surface); }
.icon-moon { display: none; }
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }

/* ── Responsive ── */
@media (max-width: 600px) {
  .hero { flex-direction: column; gap: 24px; align-items: center; text-align: center; }
  .hero-links { justify-content: center; }
  .pub { flex-direction: column; gap: 6px; }
  .pub-year { width: auto; text-align: left; }
  .nav-links { gap: 16px; }
  h1.page-title { padding-top: 40px; }
}