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

/* ── TOKENS ── */
:root {
  --bg:           #FFFFFF;
  --bg-soft:      #F7F7F5;
  --border:       #E4E4E0;
  --text:         #1A1A1A;
  --text2:        #555550;
  --text3:        #999990;
  --accent:       #3654d6;
  --accent-dim:   rgba(54,84,214,0.06);
  --accent-bg:    rgba(54,84,214,0.08);
  --accent-ring:  rgba(54,84,214,0.22);
  --accent-line:  rgba(54,84,214,0.28);
  --t:            0.15s ease;
}

[data-theme="dark"] {
  --bg:           #141414;
  --bg-soft:      #1E1E1C;
  --border:       #333330;
  --text:         #EFEFEC;
  --text2:        #9A9A95;
  --text3:        #5A5A58;
  --accent:       #7B96F0;
  --accent-dim:   rgba(123,150,240,0.08);
  --accent-bg:    rgba(123,150,240,0.1);
  --accent-ring:  rgba(123,150,240,0.3);
  --accent-line:  rgba(123,150,240,0.35);
}


/* ── BASE ── */
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', ui-sans-serif, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background var(--t), color var(--t);
}

a { color: inherit; text-decoration: none; }

/* ── TOP ACCENT BAR ── */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #3654d6, #7B96F0 50%, #3654d6);
  z-index: 200;
  pointer-events: none;
}

/* ── NAVBAR ── */
nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2.5rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

nav.scrolled {
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: rgba(228,228,224,0.6);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

[data-theme="dark"] nav.scrolled {
  background: rgba(20,20,20,0.88);
  border-bottom-color: rgba(51,51,48,0.6);
  box-shadow: 0 4px 24px rgba(0,0,0,0.35);
}

.nav-name {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text);
  letter-spacing: -0.03em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  position: relative;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text3);
  transition: color var(--t);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1px;
  background: var(--text);
  transition: width 0.2s ease;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.theme-btn {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: none;
  color: var(--text3);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: border-color var(--t), color var(--t);
}
.theme-btn:hover { border-color: var(--text2); color: var(--text2); }
.theme-btn svg { width: 14px; height: 14px; }

/* ── PAGE ── */
.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2.5rem;
  position: relative;
  z-index: 1;
}

/* ── HERO ── */
.hero {
  display: flex;
  align-items: flex-start;
  gap: 3.5rem;
  padding: 6.5rem 0 4rem;
}

.avatar-wrap {
  flex-shrink: 0;
  width: 168px; height: 168px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-soft);
}
.avatar-wrap img {
  width: 100%; height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.bio-col {
  flex: 1;
  min-width: 0;
  padding-top: 0.25rem;
}

.hero-name {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 0.55rem;
}

.hero-role {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--accent);
  margin-bottom: 1.1rem;
}

.hero-bio {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text2);
  margin-bottom: 1.6rem;
  max-width: 640px;
}
.hero-bio p { margin: 0 0 0.8rem; }
.hero-bio p:last-child { margin-bottom: 0; }
.hero-bio a {
  color: var(--text);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  transition: color var(--t), border-color var(--t);
}
.hero-bio a:hover { color: var(--accent); border-color: var(--accent); }

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.hlink {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text2);
  transition: border-color var(--t), color var(--t), background var(--t);
}
.hlink svg { width: 12px; height: 12px; fill: currentColor; flex-shrink: 0; }
.hlink:hover { border-color: var(--text2); color: var(--text); }

.hlink.primary {
  background: var(--text);
  border-color: var(--text);
  color: var(--bg);
  font-weight: 600;
}
.hlink.primary svg { fill: var(--bg); }
.hlink.primary:hover { opacity: 0.85; }

.hlink.social {
  border-color: transparent;
  background: transparent;
  color: var(--text3);
}
.hlink.social:hover {
  border-color: var(--border);
  color: var(--text2);
  background: var(--bg-soft);
}

.hlink-sep {
  width: 1px;
  height: 18px;
  background: var(--border);
  align-self: center;
  flex-shrink: 0;
  margin: 0 0.1rem;
}

/* ── SECTIONS ── */
.section {
  padding: 3.75rem 0 3rem;
  position: relative;
}
.section + .section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent-line) 25%, var(--accent-line) 75%, transparent);
}
.section-hd {
  margin-bottom: 2rem;
}

.section-label {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--text);
  display: inline-block;
  position: relative;
  padding-bottom: 0.9rem;
}
.section-label::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right,
    transparent,
    var(--accent) 8%,
    var(--accent) calc(50% - 10px),
    transparent calc(50% - 10px),
    transparent calc(50% + 10px),
    var(--accent) calc(50% + 10px),
    var(--accent) 92%,
    transparent
  );
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.65s cubic-bezier(0.16,1,0.3,1) 0.1s;
}
.section-label::after {
  content: '◆';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 50%);
  font-size: 0.65rem;
  color: var(--accent);
  line-height: 1;
  opacity: 0;
  transition: opacity 0.3s ease 0.65s;
}
.section-hd.in-view .section-label::before { transform: scaleX(1); }
.section-hd.in-view .section-label::after  { opacity: 1; }

/* ── PUBLICATIONS ── */
.pub-note {
  font-size: 0.8rem;
  color: var(--text3);
  margin: -0.25rem 0 0.75rem;
}

.pub-authors sup { font-size: 0.65em; vertical-align: super; }

.pub-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.pub-entry {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.3rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  transition: border-color var(--t), box-shadow var(--t), transform var(--t);
}

.pub-top {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 1.25rem;
}

.pub-thumb {
  flex-shrink: 0;
  width: 155px;
  height: 105px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.pub-meta {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0;
}
.pub-entry:hover {
  border-color: #C8C8C4;
  box-shadow: 0 4px 20px rgba(0,0,0,0.07);
  transform: translateY(-2px);
}
[data-theme="dark"] .pub-entry {
  background: var(--bg-soft);
}
[data-theme="dark"] .pub-entry:hover {
  border-color: #484844;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transform: translateY(-2px);
}

.pub-venue {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid var(--accent-ring);
  border-radius: 999px;
  padding: 0.18rem 0.65rem;
  align-self: flex-start;
  flex-shrink: 0;
}

.pub-title {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: clamp(1rem, 2vw, 1.15rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--text);
}

.pub-authors {
  font-size: 0.875rem;
  color: var(--text2);
  line-height: 1.6;
}
.pub-authors .me { color: var(--accent); font-weight: 600; }

.pub-tldr {
  border-left: 2.5px solid var(--accent-ring);
  padding-left: 0.75rem;
  font-size: 0.9rem;
  font-style: italic;
  color: var(--text2);
  line-height: 1.6;
}

.pub-links { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 0.1rem; }

.plink {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text2);
  background: var(--bg-soft);
  transition: border-color var(--t), color var(--t);
}
.plink svg { width: 11px; height: 11px; flex-shrink: 0; }
.plink:hover { border-color: var(--text2); color: var(--text); }

/* ── TIMELINE ── */
.tl-list {
  position: relative;
  display: flex;
  flex-direction: column;
}
.tl-list::before {
  content: '';
  position: absolute;
  left: 8.5rem;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--accent-line);
}

.tl-entry {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 0 2rem;
  position: relative;
  padding-bottom: 2.25rem;
}
.tl-entry:last-child { padding-bottom: 0; }

.tl-entry::before {
  content: '';
  position: absolute;
  left: 8.5rem;
  top: 6px;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  border: 1.5px solid var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
  transition: box-shadow var(--t);
}
.tl-entry:hover::before { box-shadow: 0 0 0 5px var(--accent-ring); }

.tl-time {
  text-align: right;
  padding-right: 1rem;
  padding-top: 0.1rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.01em;
  line-height: 1.4;
  white-space: nowrap;
}

.live-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 5px;
  vertical-align: middle;
  position: relative;
  top: -1px;
  animation: livepulse 2s ease-in-out infinite;
}

@keyframes livepulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.3; transform: scale(0.6); }
}

.tl-body { display: flex; flex-direction: column; gap: 0.15rem; }

.tl-role {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: clamp(1rem, 2vw, 1.1rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.3;
}

.tl-org {
  font-size: 0.875rem;
  font-style: italic;
  color: var(--text2);
}

.tl-advisor {
  font-size: 0.875rem;
  font-style: italic;
  color: var(--text2);
}

.tl-desc {
  font-size: 0.9rem;
  color: var(--text2);
  line-height: 1.65;
}

.tl-bullets {
  font-size: 0.9rem;
  color: var(--text2);
  line-height: 1.65;
  margin: 0;
  padding-left: 1.1rem;
}

.tl-bullets li {
  margin-bottom: 0.3rem;
}

.tl-bullets li:last-child {
  margin-bottom: 0;
}

.tl-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.55rem;
}
.tl-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text3);
  background: var(--bg-soft);
}

/* ── RESEARCH INTERESTS ── */
.research-body {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text2);
}
.research-body p { margin: 0 0 0.9rem; }
.research-body p:last-child { margin-bottom: 0; }
.research-body a {
  color: var(--text);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  transition: color var(--t), border-color var(--t);
}
.research-body a:hover { color: var(--accent); border-color: var(--accent); }

/* ── SERVICE ── */
.svc-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.svc-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  transition: border-color var(--t);
}
.svc-chip:hover { border-color: var(--text3); }

.svc-venue {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.svc-years {
  font-size: 0.75rem;
  color: var(--text3);
  white-space: nowrap;
}
.svc-years::before {
  content: '|';
  margin-right: 0.45rem;
  color: var(--border);
}

/* ── RECOGNITION ── */
.rec-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.rec-card {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: var(--bg);
  transition: border-color var(--t), box-shadow var(--t);
}
.rec-card:hover {
  border-color: #C8C8C4;
  box-shadow: 0 3px 12px rgba(0,0,0,0.06);
}
[data-theme="dark"] .rec-card { background: var(--bg-soft); }
[data-theme="dark"] .rec-card:hover { border-color: #484844; box-shadow: 0 3px 12px rgba(0,0,0,0.25); }
.rec-name {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.4;
}
.rec-desc {
  font-size: 0.875rem;
  color: var(--text2);
  line-height: 1.6;
}
.rec-venue {
  font-size: 0.72rem;
  color: var(--text3);
  margin-top: 0.25rem;
}

/* ── FOOTER ── */
footer {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text3);
}

/* ── NOISE TEXTURE ── */
html::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='250' height='250'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='250' height='250' filter='url(%23n)'/></svg>");
  background-repeat: repeat;
}
html[data-theme="dark"]::after { opacity: 0.055; }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.avatar-wrap { animation: fadeUp 0.55s cubic-bezier(0.16,1,0.3,1) both; }
.hero-name   { animation: fadeUp 0.55s 0.10s cubic-bezier(0.16,1,0.3,1) both; }
.hero-role   { animation: fadeUp 0.55s 0.18s cubic-bezier(0.16,1,0.3,1) both; }
.hero-bio    { animation: fadeUp 0.55s 0.26s cubic-bezier(0.16,1,0.3,1) both; }
.hero-links  { animation: fadeUp 0.55s 0.34s cubic-bezier(0.16,1,0.3,1) both; }

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s cubic-bezier(0.16,1,0.3,1),
              transform 0.55s cubic-bezier(0.16,1,0.3,1);
}
.reveal.in-view { opacity: 1; transform: none; }

/* ── RESPONSIVE ── */
@media (max-width: 680px) {
  nav { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .page { padding: 0 1.25rem; }
  .hero { flex-direction: column; gap: 1.5rem; padding-top: 5rem; }
  .avatar-wrap { width: 110px; height: 110px; }
  .hero-name { font-size: clamp(1.4rem, 8vw, 1.9rem); }
  .hero-bio { max-width: 100%; }
  .svc-chips { gap: 0.4rem; }
  .pub-top { flex-direction: column; }
  .pub-thumb { width: 100%; height: 160px; }
}