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

:root {
  --bg: #0a0a10;
  --ink: #eeedf0;
  --mid: #7a7a88;
  --dim: #6a6a7a;
  --line: rgba(238,237,240,0.07);
  --accent: #7b9cff;
  --accent2: rgba(123,156,255,0.18);
  --accent3: rgba(123,156,255,0.07);
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'DM Sans', -apple-system, sans-serif;
}

[data-theme="light"] {
  --bg: #f4f4f8;
  --ink: #16161e;
  --mid: #62627a;
  --dim: #888898;
  --line: rgba(0,0,0,0.07);
  --accent: #4060e0;
  --accent2: rgba(64,96,224,0.10);
  --accent3: rgba(64,96,224,0.04);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.4s, color 0.4s;
}

/* AMBIENT CANVAS — constant, no blinking */
#ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform;
}

.orb1 {
  width: 560px; height: 560px;
  background: radial-gradient(circle, rgba(100,130,255,0.28) 0%, transparent 65%);
  top: -160px; left: -100px;
  animation: drift1 20s ease-in-out infinite alternate;
}
.orb2 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(80,60,200,0.20) 0%, transparent 65%);
  bottom: 10%; right: -80px;
  animation: drift2 26s ease-in-out infinite alternate;
}
.orb3 {
  width: 260px; height: 260px;
  background: radial-gradient(circle, rgba(140,100,255,0.14) 0%, transparent 65%);
  top: 45%; left: 35%;
  animation: drift3 32s ease-in-out infinite alternate;
}

/* alternate direction so they never blink — just drift */
@keyframes drift1 {
  from { transform: translate(0px, 0px) scale(1); }
  to   { transform: translate(40px, -50px) scale(1.1); }
}
@keyframes drift2 {
  from { transform: translate(0px, 0px) scale(1); }
  to   { transform: translate(-30px, 40px) scale(1.06); }
}
@keyframes drift3 {
  from { transform: translate(0px, 0px) scale(1); }
  to   { transform: translate(25px, 30px) scale(0.92); }
}

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  height: 52px;
  border-bottom: 1px solid var(--line);
  background: rgba(10,10,16,0.78);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  transition: background 0.4s;
}
[data-theme="light"] nav { background: rgba(244,244,248,0.82); }

.nav-l { display: flex; align-items: center; gap: 2.5rem; }

.nav-name {
  font-family: var(--serif);
  font-style: italic;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  opacity: 0.55;
  letter-spacing: 0.01em;
  transition: opacity 0.2s;
}
.nav-name:hover { opacity: 1; }

.nav-links { display: flex; list-style: none; gap: 0.25rem; }
.nav-links a {
  font-size: 12px;
  color: var(--mid);
  text-decoration: none;
  padding: 5px 11px;
  border-radius: 6px;
  letter-spacing: 0.03em;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.on { color: var(--ink); background: var(--line); }

.tog {
  width: 32px; height: 18px;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
}
.tog-dot {
  position: absolute; top: 2px; left: 2px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent);
  transition: transform 0.25s cubic-bezier(.34,1.56,.64,1);
}
[data-theme="light"] .tog-dot { transform: translateX(14px); }

/* PAGE */
.page {
  position: relative; z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 2.5rem;
}

/* HERO */
.hero {
  padding-top: 8rem;
  padding-bottom: 5rem;
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 2rem;
  align-items: start;
}

.hero-kicker {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  opacity: 0;
  transform: translateY(4px);
  animation: up 0.6s 0.2s ease forwards;
}

.hero-name {
  font-family: var(--serif);
  font-size: clamp(2.8rem, 5vw, 4rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(4px);
  animation: up 0.7s 0.35s ease forwards;
}

.hero-bio {
  font-size: 14px;
  color: var(--mid);
  line-height: 1.9;
  max-width: none;
  opacity: 0;
  transform: translateY(4px);
  animation: up 0.6s 0.5s ease forwards;
}
.hero-bio a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.2s;
}
.hero-bio a:hover { border-color: var(--accent); }

.hero-links {
  display: flex; flex-wrap: wrap; gap: 1.5rem;
  margin-top: 2rem;
  opacity: 0;
  animation: up 0.6s 0.65s ease forwards;
}
.hl {
  font-size: 12px;
  color: var(--mid);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.2s;
  display: flex; align-items: center; gap: 3px;
}
.hl:hover { color: var(--accent); }
.hl .arr { font-size: 10px; opacity: 0.5; }

/* PHOTO */
.photo {
  width: 200px; height: 200px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  position: relative;
  opacity: 0;
  animation: up 0.7s 0.45s ease forwards;
  flex-shrink: 0;
  background: var(--accent3);
}
.photo::after {
  content: '';
  position: absolute; inset: 0;
  border-radius: 12px;
  box-shadow: inset 0 0 0 1px var(--line);
}
.photo img { width:100%; height:100%; object-fit:cover; display:block; }
.photo-init {
  width:100%; height:100%;
  display:flex; align-items:center; justify-content:center;
  font-family: var(--serif);
  font-style: italic;
  font-size: 2rem;
  color: var(--accent);
}

/* DIVIDER */
.rule {
  border: none;
  border-top: 1px solid var(--line);
  margin: 0;
  opacity: 0;
  animation: fade 0.5s 0.8s ease forwards;
}

/* SECTION LABEL */
.slabel {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
  padding: 3.5rem 0 1.75rem;
}

/* NEWS */
.news-row {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 2rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  transition: opacity 0.2s;
}
.news-row:first-child { border-top: 1px solid var(--line); }
.news-row:hover { opacity: 0.7; }
.ndate { font-size: 11px; color: var(--dim); white-space: nowrap; padding-top: 2px; }
.ntext { font-size: 13.5px; color: var(--mid); line-height: 1.65; }
.ntext strong { color: var(--ink); font-weight: 500; }
.ntext a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent2);
  transition: border-color 0.2s;
}
.ntext a:hover { border-color: var(--accent); }

/* CONTENT PAGES */
.content { padding-bottom: 6rem; }
.pg-top { padding: 7rem 0 2rem; }
.pg-kicker {
  font-size: 10px; font-weight: 500; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--dim); margin-bottom: 0.75rem;
}
.pg-intro { font-size: 14px; color: var(--mid); line-height: 1.85; max-width: 40ch; }

/* FILTER TABS */
.ftabs {
  display: flex; gap: 2rem;
  border-bottom: 1px solid var(--line);
  margin: 2rem 0 0;
}
.ftabs button {
  font-family: var(--sans); font-size: 12px; font-weight: 400;
  color: var(--dim); background: none; border: none;
  border-bottom: 1.5px solid transparent;
  margin-bottom: -1px; padding: 8px 0; cursor: pointer;
  letter-spacing: 0.04em;
  transition: color 0.2s, border-color 0.2s;
}
.ftabs button.on { color: var(--ink); border-bottom-color: var(--accent); }
.ftabs button:hover { color: var(--mid); }

/* PAPERS */
.paper {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--line);
  transition: opacity 0.2s;
}
.paper:first-of-type { border-top: 1px solid var(--line); }
.paper:hover { opacity: 0.8; }
.pt { font-size: 14.5px; font-weight: 500; color: var(--ink); line-height: 1.4; margin-bottom: 0.35rem; }
.pa { font-size: 12.5px; color: var(--dim); margin-bottom: 0.15rem; }
.pv { font-size: 12px; color: var(--accent); font-style: italic; }
.pchips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 0.8rem; }
.pchip {
  font-size: 10.5px; padding: 2px 10px; border-radius: 100px;
  border: 1px solid var(--line); color: var(--mid);
  letter-spacing: 0.03em;
}
.plink {
  display: inline-block; font-size: 12px; color: var(--accent);
  text-decoration: none; margin-top: 0.6rem;
  border-bottom: 1px solid var(--accent2);
  transition: border-color 0.2s;
}
.plink:hover { border-color: var(--accent); }

/* TEACH */
.trow {
  display: grid; grid-template-columns: 1fr auto auto;
  gap: 2rem; padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline; transition: opacity 0.2s;
}
.trow:first-child { border-top: 1px solid var(--line); }
.trow:hover { opacity: 0.75; }
.tc { font-size: 13.5px; color: var(--ink); }
.tr { font-size: 12px; color: var(--accent); }
.ts { font-size: 12px; color: var(--dim); text-align: right; white-space: nowrap; }

/* WORK */
.wrow {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--line);
  transition: opacity 0.2s;
}
.wrow:first-child { border-top: 1px solid var(--line); }
.wrow:hover { opacity: 0.8; }
.wtop { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 0.25rem; }
.wt { font-size: 14.5px; font-weight: 500; color: var(--ink); }
.wd { font-size: 12px; color: var(--dim); white-space: nowrap; flex-shrink: 0; }
.ws { font-size: 13px; color: var(--mid); }
.wchips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 0.75rem; }

/* SCROLL REVEAL */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.show { opacity: 1; transform: translateY(0); }

/* ANIMATIONS */
@keyframes up {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fade {
  to { opacity: 1; }
}

/* FOOTER */
footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--line);
  padding: 1.5rem 2.5rem;
  text-align: center;
  font-size: 11px; color: var(--dim);
  letter-spacing: 0.05em;
}

@media (max-width: 600px) {
  nav { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .page { padding: 0 1.25rem; }
  .hero { grid-template-columns: 1fr; padding-top: 5.5rem; gap: 2rem; }
  .photo { width: 72px; height: 72px; }
  .hero-name { font-size: 3.2rem; }
  .trow { grid-template-columns: 1fr; gap: 0.2rem; }
  .ts { text-align: left; }
}