/* ================================================
   TOKENS
   ================================================ */
:root {
  --ink: #0A0A0A;
  --paper: #FAFAF8;
  --grey: #6B6B65;
  --stone: #C7C2B8;
  --stone-soft: #E4E1D8;
  --accent: #B8460E;

  --cat-professional: #B8460E;
  --cat-teaching: #2A6B5A;
  --cat-research: #3D4F6F;

  --display: 'Inter Tight', 'Helvetica Neue', Arial, sans-serif;
  --body: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

  --max: 1280px;
  --gutter: clamp(24px, 5vw, 96px);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.dash {
  display: inline-block;
  width: 18px;
  height: 1px;
  background: var(--accent);
  margin-right: 10px;
  vertical-align: middle;
  transform: translateY(-2px);
}

/* subtle paper grain overlay */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.025;
  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");
  mix-blend-mode: multiply;
}

/* ================================================
   NAV
   ================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250, 250, 248, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--stone); }

.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-mark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 40px;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--grey);
  position: relative;
  padding-bottom: 2px;
  transition: color 0.25s var(--ease);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s var(--ease);
}
.nav-links a:hover,
.nav-links a.is-active { color: var(--ink); }
.nav-links a:hover::after,
.nav-links a.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 32px; height: 24px;
  position: relative;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle span:first-child { top: 8px; }
.nav-toggle span:last-child { top: 16px; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ================================================
   HERO
   ================================================ */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(140px, 22vw, 220px) var(--gutter) 100px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-annot {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--grey);
  margin-bottom: 28px;
  opacity: 0;
  animation: rise 0.8s var(--ease) 0.1s forwards;
}

.hero-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(56px, 10vw, 132px);
  line-height: 0.96;
  letter-spacing: -0.03em;
  margin: 0 0 32px;
  opacity: 0;
  animation: rise 0.9s var(--ease) 0.22s forwards;
}

.hero-sub {
  font-family: var(--body);
  font-size: clamp(17px, 2vw, 21px);
  color: var(--grey);
  max-width: 640px;
  margin: 0 0 56px;
  font-weight: 400;
  opacity: 0;
  animation: rise 0.9s var(--ease) 0.36s forwards;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--stone);
  opacity: 0;
  animation: rise 0.9s var(--ease) 0.5s forwards;
}

.hero-meta-item { display: flex; flex-direction: column; gap: 6px; }
.hm-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--grey);
  text-transform: uppercase;
}
.hm-value {
  font-family: var(--body);
  font-size: 15px;
  font-weight: 500;
}

.hero-scroll {
  margin-top: 72px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--ink);
  width: fit-content;
  opacity: 0;
  animation: rise 0.9s var(--ease) 0.65s forwards;
}
.hero-scroll-line {
  width: 40px; height: 1px;
  background: var(--ink);
  transition: width 0.3s var(--ease);
}
.hero-scroll:hover .hero-scroll-line { width: 64px; background: var(--accent); }

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ================================================
   SECTION HEAD (shared)
   ================================================ */
.section-head {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section-eyebrow {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--grey);
  margin-bottom: 20px;
}
.section-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(36px, 5vw, 56px);
  letter-spacing: -0.02em;
  margin: 0 0 48px;
}

/* ================================================
   PORTFOLIO PREVIEW (landing page)
   ================================================ */
.portfolio {
  padding: 140px 0 120px;
  border-top: 1px solid var(--stone);
}

.portfolio-intro {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  font-size: clamp(17px, 2vw, 20px);
  color: var(--grey);
  max-width: 680px;
  margin-bottom: 64px;
  line-height: 1.6;
}

/* Featured project cards grid (landing page) */
.featured-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 72px;
}

.project-card {
  position: relative;
  overflow: hidden;
  background: #1a1917;
  border-radius: 4px;
  text-decoration: none;
  color: var(--paper);
  display: flex;
  flex-direction: column;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 64px rgba(10, 10, 10, 0.18);
}

.project-card-img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}
.project-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.project-card:hover .project-card-img img {
  transform: scale(1.05);
}

.project-card-body {
  padding: 24px 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.project-card-cat {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(250, 250, 248, 0.5);
  display: flex;
  align-items: center;
  gap: 8px;
}
.project-card-cat::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.project-card-cat[data-cat="professional"]::before { background: var(--cat-professional); }
.project-card-cat[data-cat="teaching"]::before { background: var(--cat-teaching); }
.project-card-cat[data-cat="research"]::before { background: var(--cat-research); }

.project-card-title {
  font-family: var(--display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0;
}

.project-card-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  color: rgba(250, 250, 248, 0.45);
  margin-top: auto;
}

.project-card-arrow {
  position: absolute;
  bottom: 24px;
  right: 24px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(250, 250, 248, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), background 0.3s var(--ease);
}
.project-card:hover .project-card-arrow {
  opacity: 1;
  transform: translateX(0);
  background: var(--accent);
}

/* Category links row */
.category-links {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--ink);
  padding: 14px 24px;
  border: 1px solid var(--stone);
  border-radius: 100px;
  transition: all 0.3s var(--ease);
}
.category-link:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}
.category-link .cat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.category-link .cat-arrow {
  transition: transform 0.3s var(--ease);
}
.category-link:hover .cat-arrow {
  transform: translateX(4px);
}
.cat-soon {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--stone);
  background: rgba(199, 194, 184, 0.2);
  padding: 3px 8px;
  border-radius: 100px;
  margin-left: 2px;
}
.category-link:hover .cat-soon {
  color: rgba(250, 250, 248, 0.6);
  background: rgba(250, 250, 248, 0.15);
}

/* ================================================
   PORTFOLIO CATEGORY PAGE
   ================================================ */
.category-hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(140px, 18vw, 200px) var(--gutter) 64px;
}

.breadcrumb {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb a {
  text-decoration: none;
  color: var(--grey);
  transition: color 0.2s var(--ease);
}
.breadcrumb a:hover {
  color: var(--ink);
}
.breadcrumb .sep {
  color: var(--stone);
  font-size: 10px;
}
.breadcrumb .current {
  color: var(--ink);
}

.category-hero-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(44px, 7vw, 88px);
  letter-spacing: -0.03em;
  line-height: 0.96;
  margin: 0 0 24px;
}

.category-hero-desc {
  font-size: clamp(17px, 2vw, 20px);
  color: var(--grey);
  max-width: 600px;
  line-height: 1.6;
  margin: 0;
}

/* Category sub-navigation (on category pages) */
.cat-tabs {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  gap: 8px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.cat-tab {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  background: none;
  border: 1px solid var(--stone);
  color: var(--grey);
  padding: 10px 20px;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  border-radius: 100px;
  text-decoration: none;
  display: inline-block;
}
.cat-tab:hover { border-color: var(--ink); color: var(--ink); }
.cat-tab.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
  pointer-events: none;
}

/* Project grid (category pages) */
.project-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter) 120px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.project-grid .project-card {
  color: var(--paper);
}

.project-grid .project-card-img {
  aspect-ratio: 16 / 10;
}

/* ================================================
   COMING SOON EMPTY STATE
   ================================================ */
.coming-soon {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter) 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.coming-soon-visual {
  position: relative;
  width: 280px;
  height: 280px;
  margin-bottom: 40px;
}

.coming-soon-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0.7;
  filter: grayscale(0.2);
  border-radius: 50%;
}

.coming-soon-ring {
  position: absolute;
  inset: -12px;
  border: 1px dashed var(--stone);
  border-radius: 50%;
  animation: ring-spin 45s linear infinite;
}

@keyframes ring-spin {
  to { transform: rotate(360deg); }
}

.coming-soon-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone);
  margin-bottom: 16px;
}

.coming-soon-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 36px);
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--ink);
  margin: 0 0 16px;
}

.coming-soon-desc {
  font-size: 16px;
  color: var(--grey);
  line-height: 1.65;
  max-width: 480px;
  margin: 0 0 32px;
}

.coming-soon-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--stone);
  padding: 12px 24px;
  border-radius: 100px;
  transition: all 0.25s var(--ease);
}

.coming-soon-cta:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.coming-soon-cta span {
  transition: transform 0.25s var(--ease);
}

.coming-soon-cta:hover span {
  transform: translateX(4px);
}

/* ================================================
   PROJECT DETAIL PAGE
   ================================================ */
.project-hero-figure {
  margin: 0;
  padding: 0;
  width: 100%;
}

.project-hero-img {
  width: 100%;
  max-height: 65vh;
  object-fit: cover;
  display: block;
}

.project-hero-caption {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px var(--gutter) 0;
  font-family: var(--body);
  font-size: 0.82rem;
  color: var(--grey);
  line-height: 1.55;
  display: flex;
  align-items: baseline;
  gap: 8px 12px;
  flex-wrap: wrap;
}

.project-hero-caption strong {
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.project-hero-caption strong::after {
  content: ' —';
  font-weight: 400;
  color: var(--stone);
  margin-left: 2px;
}

.project-detail {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.project-detail .breadcrumb {
  padding-top: clamp(100px, 14vw, 140px);
}

.project-header {
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--stone);
  margin-bottom: 56px;
}

.project-header-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(36px, 6vw, 72px);
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0 0 16px;
}

.project-header-subtitle {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(18px, 2.2vw, 24px);
  line-height: 1.4;
  color: var(--grey);
  letter-spacing: -0.015em;
  max-width: 840px;
  margin: 0 0 28px;
}

.project-header-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.project-tag {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey);
  padding: 6px 14px;
  border: 1px solid var(--stone-soft);
  border-radius: 100px;
}

.project-body {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: clamp(40px, 5vw, 80px);
  padding-bottom: 80px;
}

.project-text h3 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

.project-text h4 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 16.5px;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 28px 0 12px;
}

.project-text p {
  color: var(--grey);
  line-height: 1.75;
  margin: 0 0 24px;
  font-size: 16px;
}

/* Elegant & Stylish Bullet Lists */
.project-text ul,
.project-bullets {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.project-text ul li,
.project-bullets li {
  position: relative;
  padding-left: 28px;
  color: var(--grey);
  font-size: 15.5px;
  line-height: 1.7;
  transition: color 0.2s var(--ease);
}

.project-text ul li::before,
.project-bullets li::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cat-teaching);
  box-shadow: 0 0 0 3px rgba(42, 107, 90, 0.15);
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.project-text ul li:hover::before,
.project-bullets li:hover::before {
  transform: scale(1.35);
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(184, 70, 14, 0.2);
}

.project-text ul li strong,
.project-bullets li strong {
  font-family: var(--display);
  font-weight: 600;
  color: var(--ink);
}

.project-sidebar {
  padding-top: 4px;
}

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

.project-facts li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--stone-soft);
  font-size: 13.5px;
}

.project-facts li:first-child {
  border-top: 1px solid var(--stone-soft);
}

.project-fact-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--grey);
  line-height: 1.4;
}

.project-fact-value {
  font-family: var(--body);
  font-weight: 500;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink);
  text-align: left;
}

.project-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding-bottom: 80px;
}

.project-images.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.project-images.cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.project-images img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
}

.project-images.media-preview img,
.project-images.media-preview figure img {
  aspect-ratio: auto;
  max-height: 480px;
  object-fit: contain;
  background: rgba(10, 10, 10, 0.02);
  border: 1px solid var(--stone-soft);
}

.project-images.full-width {
  grid-template-columns: 1fr;
}

.project-images.full-width img {
  aspect-ratio: 16 / 9;
}

.project-images figure {
  margin: 0;
}

.project-images figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
}

.project-images figcaption {
  font-family: var(--body);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--grey);
  line-height: 1.5;
  margin-top: 10px;
  padding: 0 2px;
}

.project-images figcaption strong {
  display: block;
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--ink);
  margin-bottom: 2px;
}

.project-demo-box {
  margin: 24px 0 48px;
  border: 1px solid var(--stone-soft);
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper);
}

.project-demo-box img,
.project-demo-box video {
  width: 100%;
  height: auto;
  display: block;
  max-height: 620px;
  object-fit: contain;
  background: #0d0f12;
}

.project-demo-caption {
  padding: 14px 18px;
  background: var(--paper);
  border-top: 1px solid var(--stone-soft);
  font-family: var(--body);
  font-size: 0.82rem;
  color: var(--grey);
  line-height: 1.55;
}

.project-demo-caption strong {
  display: block;
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink);
  margin-bottom: 3px;
}

.fig-ref {
  color: var(--cat-teaching);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px dotted var(--cat-teaching);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.fig-ref:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ------------------------------------------------
   SIGNIFICANCE SECTION
   ------------------------------------------------ */
.significance {
  position: relative;
  margin: 0 auto;
  max-width: var(--max);
  padding: 0 var(--gutter) 80px;
}

.significance-inner {
  position: relative;
  background: linear-gradient(135deg, rgba(42,107,90,0.04) 0%, rgba(61,79,111,0.04) 100%);
  border: 1px solid var(--stone-soft);
  border-radius: 12px;
  padding: clamp(40px, 5vw, 64px);
  overflow: hidden;
}

.significance-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--cat-teaching), var(--cat-research));
  border-radius: 4px 0 0 4px;
}

.significance-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cat-teaching);
  margin-bottom: 20px;
}

.significance-label::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--cat-teaching);
  border-radius: 50%;
  animation: sig-pulse 2.5s ease-in-out infinite;
}

@keyframes sig-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.significance-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  line-height: 1.25;
  color: var(--ink);
  margin: 0 0 12px;
}

.significance-intro {
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--grey);
  max-width: 640px;
  margin-bottom: 36px;
}

.significance-claims {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0;
  counter-reset: claim;
}

.significance-claim {
  counter-increment: claim;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 0 16px;
  padding: 24px 0;
  border-top: 1px solid var(--stone-soft);
  align-items: start;
}

.significance-claim:last-child {
  padding-bottom: 0;
}

.significance-claim::before {
  content: counter(claim, decimal-leading-zero);
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--stone);
  padding-top: 2px;
  transition: color 0.3s var(--ease);
}

.significance-claim:hover::before {
  color: var(--cat-teaching);
}

.significance-claim-title {
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
  margin-bottom: 6px;
}

.significance-claim-text {
  font-family: var(--body);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--grey);
}

@media (max-width: 600px) {
  .significance-claim {
    grid-template-columns: 36px 1fr;
    gap: 0 12px;
  }
  .significance-claim::before {
    font-size: 1.2rem;
  }
}

/* Project navigation (prev / next) */
.project-nav {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--stone);
  padding: 48px 0 100px;
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.project-nav a {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: color 0.25s var(--ease);
}
.project-nav a:hover {
  color: var(--accent);
}

.project-nav-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
}

.project-nav-title {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(18px, 2.5vw, 24px);
  letter-spacing: -0.01em;
}

.project-nav .next {
  text-align: right;
  margin-left: auto;
}

/* ================================================
   ABOUT
   ================================================ */
.about {
  padding: 120px 0;
  border-top: 1px solid var(--stone);
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.about-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 96px;
}

.portrait-frame {
  aspect-ratio: 4 / 5;
  background: #2a2926;
  position: relative;
  overflow: hidden;
}
.portrait-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.portrait-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(250,250,248,0.3);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.portrait-caption {
  margin-top: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--grey);
}

.about-lede {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin: 0 0 28px;
}

.about-body {
  font-size: 16px;
  color: var(--grey);
  line-height: 1.7;
  max-width: 620px;
  margin: 0 0 20px;
}
.about-body a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.about-body a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.about-facts {
  display: flex;
  gap: 56px;
  margin: 48px 0 40px;
  padding-top: 32px;
  border-top: 1px solid var(--stone);
}
.fact { display: flex; flex-direction: column; gap: 6px; }
.fact-num {
  font-family: var(--display);
  font-weight: 800;
  font-size: 40px;
  letter-spacing: -0.02em;
}
.fact-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--grey);
  letter-spacing: 0.03em;
  max-width: 140px;
}

.cv-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 4px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), gap 0.25s var(--ease);
}
.cv-link:hover { color: var(--accent); border-color: var(--accent); gap: 18px; }

@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .portrait-frame { max-width: 320px; }
}

/* ================================================
   PUBLICATIONS
   ================================================ */
.publications {
  padding: 120px 0;
  border-top: 1px solid var(--stone);
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.publications .section-title {
  margin-bottom: 16px;
}

.pub-intro {
  font-size: clamp(16px, 1.8vw, 18px);
  color: var(--grey);
  max-width: 640px;
  line-height: 1.65;
  margin: 0 0 16px;
}

.pub-stats {
  display: flex;
  gap: 32px;
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--stone);
}

.pub-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.pub-stat-num {
  font-family: var(--display);
  font-weight: 800;
  font-size: 28px;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.pub-stat-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--grey);
  text-transform: uppercase;
}

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

.pub-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--stone-soft);
  transition: background 0.3s var(--ease);
}

.pub-item:first-child {
  border-top: none;
}

.pub-item:hover {
  background: rgba(42, 107, 90, 0.025);
  padding-left: 16px;
  padding-right: 16px;
  margin-left: -16px;
  margin-right: -16px;
  border-radius: 6px;
}

.pub-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.pub-year {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--grey);
  text-transform: uppercase;
}

.pub-title {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.pub-title:hover {
  color: var(--accent);
}

.pub-authors {
  font-family: var(--body);
  font-size: 14px;
  color: var(--grey);
  line-height: 1.5;
}

.pub-venue {
  font-family: var(--body);
  font-size: 14px;
  font-style: italic;
  color: var(--grey);
  line-height: 1.5;
}

.pub-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.pub-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid var(--stone-soft);
  color: var(--grey);
  background: transparent;
  transition: all 0.25s var(--ease);
}

.pub-item:hover .pub-tag {
  border-color: var(--stone);
}

.pub-citations {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  min-width: 56px;
  padding-top: 4px;
}

.pub-cite-num {
  font-family: var(--display);
  font-weight: 800;
  font-size: 24px;
  letter-spacing: -0.02em;
  color: var(--cat-research);
  line-height: 1;
}

.pub-cite-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--grey);
}

.pub-scholar-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 48px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  padding: 14px 24px;
  border: 1px solid var(--stone);
  border-radius: 100px;
  transition: all 0.3s var(--ease);
}

.pub-scholar-link:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.pub-scholar-link .pub-link-arrow {
  transition: transform 0.3s var(--ease);
}

.pub-scholar-link:hover .pub-link-arrow {
  transform: translateX(4px);
}

@media (max-width: 760px) {
  .pub-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .pub-citations {
    flex-direction: row;
    gap: 6px;
    min-width: auto;
  }
  .pub-stats {
    gap: 24px;
  }
}

/* ================================================
   CONTACT
   ================================================ */
.contact {
  border-top: 1px solid var(--stone);
  background: var(--ink);
  color: var(--paper);
  padding: 130px 0 0;
}
.contact-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter) 100px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}
.contact .section-eyebrow { color: var(--stone); margin-bottom: 20px; }
.contact-header-wrap {
  grid-column: 1;
  display: flex;
  flex-direction: column;
}
.contact-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(32px, 4.4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
}
.contact-lede {
  color: var(--stone);
  font-size: 15.5px;
  line-height: 1.7;
  margin: 28px 0 0;
  max-width: 480px;
}

.contact-form { grid-column: 2; display: flex; flex-direction: column; gap: 22px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--stone);
  text-transform: uppercase;
}
.field input, .field textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(250,250,248,0.3);
  color: var(--paper);
  font-family: var(--body);
  font-size: 16px;
  padding: 10px 2px;
  resize: vertical;
  transition: border-color 0.25s var(--ease);
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.field input::placeholder, .field textarea::placeholder { color: rgba(250,250,248,0.35); }

.submit-btn {
  margin-top: 12px;
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--accent);
  color: var(--paper);
  border: none;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  padding: 16px 28px;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
  border-radius: 100px;
}
.submit-btn:hover { transform: translateX(4px); background: #d1550f; }
.submit-arrow { transition: transform 0.25s var(--ease); }
.submit-btn:hover .submit-arrow { transform: translateX(4px); }

.form-note {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--stone);
  min-height: 16px;
}

.contact-direct {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding-top: 4px;
}
.direct-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(250,250,248,0.12);
}
.direct-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.direct-item .hm-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--stone);
}
.direct-item span, .direct-item a {
  color: var(--paper);
  font-size: 15.5px;
  line-height: 1.55;
  text-decoration: none;
}
.direct-item a.direct-email {
  font-family: var(--display);
  font-size: clamp(20px, 2.2vw, 28px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--paper);
  border-bottom: 1px solid rgba(250,250,248,0.3);
  display: inline-block;
  padding-bottom: 2px;
  align-self: flex-start;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.direct-item a.direct-email:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.direct-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 4px;
}
.direct-links a {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--stone);
  border-bottom: 1px dotted rgba(250,250,248,0.3);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.direct-links a:hover {
  color: var(--paper);
  border-color: var(--paper);
}

@media (max-width: 860px) {
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
  .contact-header-wrap, .contact-title, .contact-form, .contact-direct { grid-column: 1; }
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
  border-top: 1px solid rgba(250,250,248,0.15);
  max-width: var(--max);
  margin: 0 auto;
  padding: 36px var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--stone);
  letter-spacing: 0.04em;
}

/* For footer used inside .contact (dark bg) */
.contact .footer a {
  color: var(--stone);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.contact .footer a:hover {
  color: var(--paper);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-align: right;
}

/* Standalone footer (for category/project pages with light bg) */
.footer-standalone {
  border-top: 1px solid var(--stone);
  max-width: var(--max);
  margin: 0 auto;
  padding: 36px var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--grey);
  letter-spacing: 0.04em;
}
.footer-standalone a {
  color: var(--grey);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.footer-standalone a:hover {
  color: var(--ink);
}

/* ================================================
   SCROLL-REVEAL ANIMATION SYSTEM
   ================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--reveal-delay, 0s);
}

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

/* ================================================
   BACK TO TOP BUTTON
   ================================================ */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 90;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), background 0.3s var(--ease);
  box-shadow: 0 4px 16px rgba(10, 10, 10, 0.2);
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent);
}

/* ================================================
   RESPONSIVE / MOBILE NAV
   ================================================ */
@media (max-width: 760px) {
  .nav-links {
    position: fixed;
    top: 65px; left: 0; right: 0; bottom: 0;
    background: var(--paper);
    flex-direction: column;
    padding: 40px var(--gutter);
    gap: 28px;
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
  }
  .nav-links.is-open { transform: translateX(0); }
  .nav-links a { font-size: 18px; color: var(--ink); }
  .nav-toggle { display: block; }

  .hero { padding-top: 140px; }
  .hero-meta { gap: 28px; }

  .featured-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .category-links {
    flex-direction: column;
    gap: 12px;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .project-body {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .project-sidebar {
    order: -1;
  }

  .project-images,
  .project-images.cols-3,
  .project-images.cols-4 {
    grid-template-columns: 1fr;
  }

  .project-nav {
    flex-direction: column;
    gap: 32px;
  }
  .project-nav .next {
    text-align: left;
  }

  .footer, .footer-standalone {
    flex-direction: column;
    gap: 16px;
  }
  .footer-copy {
    text-align: left;
  }
}

@media (max-width: 1024px) {
  .project-images.cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 761px) and (max-width: 960px) {
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-grid .project-card:last-child {
    grid-column: 1 / -1;
  }
}

.br-desktop { display: inline; }
@media (max-width: 600px) { .br-desktop { display: none; } }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}