:root {
  color-scheme: light;
  --ink: #1f2d2f;
  --muted: #5d6868;
  --paper: #f7f7f2;
  --white: #ffffff;
  --line: #d9ded6;
  --accent: #8f4433;
  --accent-2: #1f4c5c;
  --accent-3: #497760;
  --warm: #ca8b48;
  --shadow: 0 20px 60px rgba(31, 45, 47, 0.12);
  --radius: 8px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration-color: rgba(143, 68, 51, 0.45);
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--accent);
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 100;
  transform: translateY(-150%);
  background: var(--ink);
  color: var(--white);
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(31, 45, 47, 0.22);
  backdrop-filter: blur(16px);
  transition: background 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(247, 247, 242, 0.92);
  border-color: var(--line);
}

.nav {
  width: min(var(--max), calc(100% - 2rem));
  height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  font-weight: 760;
  letter-spacing: 0;
  color: var(--white);
  text-decoration: none;
}

.is-scrolled .brand {
  color: var(--ink);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 0.94rem;
  padding: 0.55rem 0.72rem;
  border-radius: var(--radius);
}

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

.nav-links a:hover,
.nav-links a.is-active {
  background: rgba(255, 255, 255, 0.16);
  color: var(--white);
}

.is-scrolled .nav-links a:hover,
.is-scrolled .nav-links a.is-active {
  background: rgba(143, 68, 51, 0.1);
  color: var(--accent);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  padding: 0;
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--white);
}

.is-scrolled .nav-toggle {
  border-color: var(--line);
  background: var(--white);
}

.is-scrolled .nav-toggle-line {
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: end;
  overflow: hidden;
}

.hero-media,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-media {
  background-image: url("assets/geometric-background.jpg");
  background-size: cover;
  background-position: center;
  transform: scale(1.02);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(31, 45, 47, 0.88), rgba(31, 45, 47, 0.54) 52%, rgba(31, 45, 47, 0.2)),
    linear-gradient(0deg, rgba(31, 45, 47, 0.58), rgba(31, 45, 47, 0.08) 42%);
}

.hero-content {
  position: relative;
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
  padding: 9rem 0 7rem;
  color: var(--white);
}

.eyebrow,
.section-kicker {
  margin: 0 0 0.8rem;
  color: var(--warm);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 900px;
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", serif;
  font-size: clamp(4rem, 10vw, 8.5rem);
  line-height: 0.9;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 720px;
  margin: 1.5rem 0 0;
  font-size: clamp(1.12rem, 2vw, 1.45rem);
  color: rgba(255, 255, 255, 0.88);
}

.hero-actions,
.profile-strip,
.pub-links,
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-actions {
  margin-top: 2rem;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  padding: 0.72rem 1rem;
  font-weight: 760;
  text-decoration: none;
  border: 1px solid transparent;
}

.button.primary {
  background: var(--accent);
  color: var(--white);
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.08);
}

.button:hover {
  transform: translateY(-1px);
}

.section {
  padding: clamp(4rem, 7vw, 7rem) 0;
}

.section-inner {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.intro-grid,
.two-column,
.teaching-grid,
.cv-grid,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.76fr) minmax(0, 1.24fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.portrait-wrap {
  position: relative;
}

.portrait {
  width: min(100%, 420px);
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 8px solid var(--white);
}

.intro-copy h2,
.section-heading h2,
.teaching-grid h2,
.cv-grid h2,
.contact-grid h2 {
  margin: 0;
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: 0;
}

.intro-copy p,
.teaching-copy p,
.cv-grid p,
.contact-grid p,
.section-note {
  color: var(--muted);
  font-size: 1.04rem;
}

.profile-strip {
  margin-top: 1.5rem;
}

.profile-strip a,
.pub-links a,
.contact-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  padding: 0.48rem 0.72rem;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.92rem;
}

.news-band,
.teaching-band {
  background: var(--white);
  border-block: 1px solid var(--line);
}

.section-heading {
  margin-bottom: 2rem;
}

.news-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.news-list article,
.research-item,
.timeline-item,
.publication-list li,
.facts div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.76);
  padding: 1.1rem;
}

.news-list time,
.timeline time,
.pub-year {
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.news-list p,
.timeline p,
.research-item p,
.publication-list p {
  margin-bottom: 0;
  color: var(--muted);
}

.sticky-heading {
  position: sticky;
  top: 96px;
}

.research-list {
  display: grid;
  gap: 1rem;
}

.research-item h3,
.timeline-item h3,
.publication-list h3 {
  margin: 0.45rem 0 0;
  font-size: 1.08rem;
  line-height: 1.35;
  letter-spacing: 0;
}

.publications-section {
  background: #eef2ed;
}

.publication-list {
  display: grid;
  gap: 0.85rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.publication-list li {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 1rem;
  background: var(--white);
}

.pub-links {
  margin-top: 0.9rem;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.teaching-copy {
  max-width: 720px;
}

.cv-section {
  background: var(--ink);
  color: var(--white);
}

.cv-section .section-kicker,
.contact-section .section-kicker {
  color: var(--warm);
}

.cv-section p {
  color: rgba(255, 255, 255, 0.76);
}

.cv-section .button.primary {
  margin-top: 1rem;
  background: var(--warm);
  color: var(--ink);
}

.facts {
  display: grid;
  gap: 1rem;
  margin: 0;
}

.facts div {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
}

.facts dt {
  color: var(--warm);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.facts dd {
  margin: 0.4rem 0 0;
  color: rgba(255, 255, 255, 0.86);
}

.contact-links {
  flex-direction: column;
  align-items: stretch;
}

.contact-links a {
  min-height: 52px;
  justify-content: space-between;
}

.site-footer {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 2rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav-links {
    position: absolute;
    top: 68px;
    left: 1rem;
    right: 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.45rem;
    background: rgba(247, 247, 242, 0.98);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a,
  .is-scrolled .nav-links a {
    color: var(--ink);
    padding: 0.75rem 0.85rem;
  }

  .nav-links a:hover,
  .nav-links a.is-active,
  .is-scrolled .nav-links a:hover,
  .is-scrolled .nav-links a.is-active {
    background: rgba(143, 68, 51, 0.1);
    color: var(--accent);
  }

  .hero {
    min-height: 86vh;
  }

  .hero-content {
    padding-bottom: 5rem;
  }

  .intro-grid,
  .two-column,
  .teaching-grid,
  .cv-grid,
  .contact-grid,
  .news-list {
    grid-template-columns: 1fr;
  }

  .sticky-heading {
    position: static;
  }

  .portrait {
    width: min(100%, 340px);
  }

  .publication-list li {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .hero h1 {
    font-size: clamp(3.2rem, 19vw, 5rem);
  }

  .hero-actions .button {
    flex: 1 1 100%;
  }

  .section {
    padding: 3.5rem 0;
  }

  .site-footer {
    flex-direction: column;
  }
}