:root {
  --bg: #10131f;
  --bg-elevated: #171b2c;
  --bg-card: #1b2033;
  --ink: #ede9dd;
  --ink-dim: #9a9db3;
  --ink-faint: #6b6e85;
  --gold: #e1a340;
  --gold-soft: rgba(225, 163, 64, 0.14);
  --teal: #4fa69c;
  --line: rgba(237, 233, 221, 0.1);
  --line-strong: rgba(237, 233, 221, 0.2);

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --container: 920px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Nav ---------- */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  backdrop-filter: blur(10px);
  background: linear-gradient(to bottom, rgba(16,19,31,0.85), rgba(16,19,31,0));
}

.nav-mark {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold);
  border: 1px solid var(--line-strong);
  padding: 6px 10px;
  border-radius: 3px;
}

.nav-links { display: flex; gap: 28px; }

.nav-links a {
  font-size: 13.5px;
  color: var(--ink-dim);
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
  position: relative;
}

.nav-links a:hover { color: var(--ink); }

@media (max-width: 700px) {
  #nav { padding: 16px 20px; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 11.5px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 120px 40px 80px;
}

.hero-field {
  position: absolute;
  top: 50%;
  right: 2%;
  transform: translateY(-50%);
  width: min(66vw, 760px);
  height: min(66vw, 760px);
  opacity: 0.9;
}

#phase-portrait { width: 100%; height: 100%; }

.orbit-guide {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
}

.spiral {
  fill: none;
  stroke-width: 1.4;
  stroke-linecap: round;
  opacity: 0.65;
}

.spiral-growth { stroke: var(--teal); }

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--teal);
  text-transform: uppercase;
  margin: 0 0 18px;
}

.hero h1 {
  font-family: var(--font-display);
  font-optical-sizing: auto;
  font-weight: 500;
  font-size: clamp(48px, 7vw, 84px);
  line-height: 1;
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}

.tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(19px, 2.4vw, 24px);
  color: var(--gold);
  margin: 0 0 20px;
  max-width: 480px;
}

.hero-sub {
  font-size: 16px;
  color: var(--ink-dim);
  max-width: 480px;
  margin: 0 0 34px;
}

.hero-links { display: flex; gap: 14px; margin-bottom: 30px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 22px;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--gold);
  color: #171307;
}
.btn-primary:hover { background: #f0b455; }

.btn-ghost {
  border: 1px solid var(--line-strong);
  color: var(--ink);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); }

.hero-meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-faint);
}
.hero-meta .dot { margin: 0 8px; }
.hero-meta a { border-bottom: 1px solid var(--line-strong); }
.hero-meta a:hover { color: var(--teal); border-color: var(--teal); }

@media (max-width: 860px) {
  .hero-field { opacity: 0.35; width: 90vw; height: 90vw; right: -10%; }
  .hero { padding: 110px 22px 60px; }
}

/* ---------- Sections ---------- */
main { position: relative; z-index: 2; }

.section {
  max-width: var(--container);
  margin: 0 auto;
  padding: 100px 40px;
  border-top: 1px solid var(--line);
}

.section-wide { max-width: 1320px; }

@media (max-width: 700px) {
  .section { padding: 70px 22px; }
}

.reveal { transition: opacity 0.7s ease, transform 0.7s ease; }

/* Only hide sections up front if JS confirms it can reveal them again. */
.js-reveal .reveal {
  opacity: 0;
  transform: translateY(24px);
}

.js-reveal .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.section-head { margin-bottom: 48px; }

.section-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.25;
  margin: 0;
  max-width: 640px;
  color: var(--ink);
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 60px;
}

@media (max-width: 780px) {
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
}

.about-text p {
  color: var(--ink-dim);
  font-size: 16px;
  margin: 0 0 20px;
}
.about-text p:last-child { margin-bottom: 0; }

.about-facts {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 4px;
}

.fact { display: flex; flex-direction: column; gap: 6px; }

.fact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.fact-value { font-size: 14.5px; color: var(--ink); }

.fact-links { display: flex; gap: 14px; }
.fact-links a { border-bottom: 1px solid var(--line-strong); padding-bottom: 1px; }
.fact-links a:hover { color: var(--gold); border-color: var(--gold); }

/* ---------- Research pillars ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (max-width: 780px) {
  .pillars { grid-template-columns: 1fr; }
}

.pillar {
  background: var(--bg);
  padding: 34px 28px;
}

.pillar-mark {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  border: 1px solid rgba(79, 166, 156, 0.35);
  border-radius: 3px;
  padding: 4px 9px;
  margin-bottom: 18px;
}

.pillar h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 21px;
  margin: 0 0 12px;
  white-space: nowrap;
}

.pillar p {
  color: var(--ink-dim);
  font-size: 14.5px;
  margin: 0;
}

/* ---------- Publications ---------- */
.pub-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: pub;
}

.pub-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.pub-item:first-child { border-top: 1px solid var(--line); }

.pub-year {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--gold);
  padding-top: 2px;
}

.pub-title {
  font-size: 15.5px;
  color: var(--ink);
  margin: 0 0 6px;
  font-weight: 500;
  line-height: 1.45;
}

.pub-authors {
  font-size: 13.5px;
  color: var(--ink-faint);
  margin: 0 0 8px;
}

.pub-venue {
  font-size: 13.5px;
  color: var(--ink-dim);
  font-style: italic;
  margin: 0 0 8px;
}

.pub-doi {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal);
  border-bottom: 1px solid rgba(79, 166, 156, 0.3);
  padding-bottom: 1px;
}
.pub-doi:hover { color: var(--gold); border-color: var(--gold); }

@media (max-width: 600px) {
  .pub-item { grid-template-columns: 1fr; gap: 6px; }
}

/* ---------- Experience timeline ---------- */
.timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 56px;
}

@media (max-width: 780px) {
  .timeline { grid-template-columns: 1fr; gap: 36px; }
}

.tl-heading {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.tl-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.tl-item:last-child { border-bottom: none; }

.tl-years {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--gold);
  margin-bottom: 6px;
}

.tl-body { display: flex; flex-direction: column; gap: 3px; }

.tl-role { font-weight: 500; font-size: 14.5px; color: var(--ink); }

.tl-org { font-size: 13px; color: var(--ink-dim); }

.projects-block .project-row {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.projects-block .project-row:first-of-type { border-top: 1px solid var(--line); }

.project-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal);
  padding-top: 2px;
}

.project-row p { margin: 0; font-size: 14px; color: var(--ink-dim); line-height: 1.55; }
.project-row strong { color: var(--ink); font-weight: 500; }

@media (max-width: 600px) {
  .projects-block .project-row { grid-template-columns: 1fr; gap: 6px; }
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 56px;
}

@media (max-width: 780px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .skills-grid { grid-template-columns: 1fr; }
}

.skill-group {
  background: var(--bg);
  padding: 24px;
}

.skill-group h3 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 10px;
  font-weight: 500;
}

.skill-group p { margin: 0; font-size: 14px; color: var(--ink-dim); line-height: 1.6; }

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

.talk-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-dim);
  line-height: 1.55;
}
.talk-list li:first-child { border-top: 1px solid var(--line); }

.talk-year {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal);
  margin-right: 12px;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (max-width: 780px) {
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-card {
  background: var(--bg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background 0.2s ease;
}
.contact-card:hover { background: var(--bg-elevated); }

.contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.contact-value { font-size: 15px; color: var(--ink); }
.contact-card:hover .contact-value { color: var(--gold); }

/* ---------- Typography ---------- */

/* Justify all body text */
.hero-sub,
.about-text p,
.pillar p,
.pub-title,
.pub-authors,
.pub-venue,
.tl-org,
.project-row p,
.skill-group p,
.talk-list li,
.contact-value {
    text-align: justify;
    text-justify: inter-word;
}

/* ---------- Footer ---------- */
.site-footer {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 40px 60px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
  border-top: 1px solid var(--line);
}

@media (max-width: 600px) {
  .site-footer { flex-direction: column; gap: 8px; padding: 30px 22px 50px; }
}