:root {
  --background: #f7f5f0;
  --surface: #ffffff;
  --surface-muted: #eeeae2;
  --text: #1c2430;
  --text-muted: #5f6874;
  --accent: #345c56;
  --accent-strong: #24433f;
  --border: #d8d3c8;
  --shadow: 0 18px 55px rgba(28, 36, 48, 0.1);
  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --radius: 18px;
  --container: 1120px;
}

[data-theme="dark"] {
  --background: #131817;
  --surface: #1b2221;
  --surface-muted: #222b29;
  --text: #eef3f1;
  --text-muted: #b5bfbc;
  --accent: #9ccfc5;
  --accent-strong: #c2e8e0;
  --border: #34403d;
  --shadow: 0 18px 55px rgba(0, 0, 0, 0.26);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.7;
  transition: background 180ms ease, color 180ms ease;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

img {
  max-width: 100%;
}

code {
  padding: 0.1rem 0.35rem;
  background: var(--surface-muted);
  border-radius: 5px;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  transform: translateY(-150%);
  background: var(--text);
  color: var(--background);
  border-radius: 6px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--background) 86%, transparent);
  backdrop-filter: blur(14px);
}

.site-header.scrolled {
  border-color: var(--border);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--background);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.15rem;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

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

.nav-toggle,
.theme-toggle {
  border: 0;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 9px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: currentColor;
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 50%;
  font-size: 1.15rem;
}

.hero {
  padding: clamp(4.5rem, 9vw, 8rem) 0 5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.68fr);
  gap: clamp(3rem, 8vw, 7rem);
  align-items: center;
}

.eyebrow,
.section-kicker,
.label,
.publication-type {
  margin: 0 0 0.65rem;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: var(--serif);
  line-height: 1.05;
}

h1 {
  max-width: 800px;
  margin-bottom: 1.5rem;
  font-size: clamp(3.6rem, 9vw, 7.4rem);
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 2rem;
  font-size: clamp(2.25rem, 5vw, 4.25rem);
  letter-spacing: -0.04em;
}

h3 {
  line-height: 1.25;
}

.hero-summary {
  max-width: 760px;
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: clamp(1.18rem, 2vw, 1.55rem);
}

.hero-summary strong {
  color: var(--text);
  font-weight: 600;
}

.hero-meta {
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0 1.25rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.15rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

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

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

.button-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--accent);
}

.identity-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.identity-links a {
  font-size: 0.9rem;
  font-weight: 600;
}

.profile-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.portrait-placeholder {
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 4.25;
  background:
    radial-gradient(circle at 70% 25%, color-mix(in srgb, var(--accent) 25%, transparent), transparent 35%),
    linear-gradient(135deg, var(--surface-muted), var(--surface));
  color: var(--text-muted);
  text-align: center;
  font-family: var(--serif);
  font-size: 1.35rem;
}

.profile-card-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.25rem;
  padding: 1.5rem;
}

.profile-card-content p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.profile-card-content strong {
  color: var(--text);
}

.section {
  padding: clamp(4.5rem, 8vw, 7.5rem) 0;
}

.section-tinted {
  background: var(--surface-muted);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.45fr);
  gap: clamp(2rem, 8vw, 7rem);
}

.prose {
  max-width: 780px;
  color: var(--text-muted);
  font-size: 1.08rem;
}

.section-intro {
  max-width: 680px;
  margin-bottom: 2rem;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.status-note,
.teaching-note {
  margin-top: 2rem;
  padding: 1.25rem 1.4rem;
  border-left: 4px solid var(--accent);
  background: var(--surface);
  color: var(--text-muted);
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.three-column {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.skill-group {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.skill-group .label {
  margin-bottom: 1rem;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.skill-list li {
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.info-card,
.course-card {
  padding: 1.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.card-number {
  display: block;
  margin-bottom: 2.8rem;
  color: var(--accent);
  font-family: var(--serif);
  font-size: 1.25rem;
}

.info-card h3 {
  margin-bottom: 0.7rem;
  font-family: var(--serif);
  font-size: 1.5rem;
}

.info-card p,
.course-card p,
.course-card li {
  color: var(--text-muted);
}

.project-panel {
  display: grid;
  grid-template-columns: 0.8fr 1.35fr;
  gap: clamp(2rem, 7vw, 6rem);
  margin-top: 1.25rem;
  padding: clamp(1.8rem, 4vw, 3rem);
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--background);
}

.project-panel .label,
.project-panel a {
  color: var(--background);
}

.project-panel h3 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.7rem);
}

.research-link {
  display: inline-block;
  margin-top: 0.5rem;
}

.project-details {
  display: grid;
  gap: 0.8rem;
  margin: 1.5rem 0 0;
}

.project-details div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 1rem;
}

.project-details dt {
  font-weight: 700;
}

.project-details dd {
  margin: 0;
  opacity: 0.84;
}

.section-heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
}

.text-link {
  margin-bottom: 2.5rem;
  font-weight: 700;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.filter-button {
  padding: 0.58rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 600;
}

.filter-button.active,
.filter-button:hover {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--background);
}

.publication {
  display: grid;
  grid-template-columns: 95px minmax(0, 1fr);
  gap: 1.5rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.publication:last-child {
  border-bottom: 1px solid var(--border);
}

.publication[hidden] {
  display: none;
}

.publication-year {
  color: var(--accent);
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 700;
}

.publication h3 {
  max-width: 850px;
  margin-bottom: 0.55rem;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
}

.publication-authors,
.publication-venue {
  margin-bottom: 0.3rem;
  color: var(--text-muted);
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 0.8rem;
}

.publication-links a,
.copy-citation {
  font-size: 0.87rem;
  font-weight: 700;
}

.copy-citation {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font-family: var(--sans);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.editing-note {
  margin-top: 1.5rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.timeline {
  border-top: 1px solid var(--border);
}

.timeline-item {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

.timeline-date {
  color: var(--text-muted);
  font-weight: 600;
}

.timeline-item h3 {
  margin-bottom: 0.4rem;
  font-family: var(--serif);
  font-size: 1.45rem;
}

.timeline-item p:last-child {
  margin-bottom: 0;
  color: var(--text-muted);
}

.teaching-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.teaching-years {
  display: grid;
  gap: 0.75rem;
}

.teaching-year {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-muted);
}

.teaching-year summary {
  display: grid;
  grid-template-columns: minmax(120px, 0.6fr) minmax(0, 1fr) 1.5rem;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  list-style: none;
}

.teaching-year summary::-webkit-details-marker {
  display: none;
}

.teaching-year summary:hover {
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}

.year-label {
  color: var(--text);
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 700;
}

.year-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.year-toggle {
  position: relative;
  width: 1.1rem;
  height: 1.1rem;
  border: 1px solid var(--accent);
  border-radius: 50%;
}

.year-toggle::before,
.year-toggle::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.5rem;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: translate(-50%, -50%);
}

.year-toggle::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: transform 180ms ease;
}

.teaching-year[open] .year-toggle::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.teaching-year[open] summary {
  border-bottom: 1px solid var(--border);
}

.teaching-year .teaching-grid {
  padding: 1rem;
}

.course-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.course-card h3 {
  margin: 1.5rem 0 0.3rem;
  font-family: var(--serif);
  font-size: 1.65rem;
}

.course-card h3:first-child {
  margin-top: 0;
}

.course-role {
  font-weight: 700;
}

.course-card ul {
  margin: 1.25rem 0 0;
  padding-left: 1.2rem;
}

.teaching-note {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 2rem;
}

.teaching-note h3,
.teaching-note p {
  margin-bottom: 0;
}

.compact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.compact-grid article {
  min-height: 180px;
  padding: 1.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.compact-grid h3 {
  font-family: var(--serif);
  font-size: 1.35rem;
}

.compact-grid p {
  color: var(--text-muted);
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 9vw, 8rem);
  padding: clamp(2rem, 5vw, 4rem);
  border-radius: calc(var(--radius) + 6px);
  background: var(--text);
  color: var(--background);
}

.contact-panel .section-kicker,
.contact-panel a {
  color: color-mix(in srgb, var(--background) 85%, var(--accent));
}

.contact-intro {
  max-width: 600px;
  color: color-mix(in srgb, var(--background) 72%, transparent);
  font-size: 1.15rem;
}

.contact-details > a {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  font-weight: 700;
}

.contact-details p {
  margin: 1.5rem 0;
  color: color-mix(in srgb, var(--background) 72%, transparent);
}

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-content p {
  margin: 0;
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 200;
  padding: 0.75rem 1rem;
  transform: translateY(140%);
  border-radius: 8px;
  background: var(--text);
  color: var(--background);
  box-shadow: var(--shadow);
  font-size: 0.88rem;
  transition: transform 180ms ease;
}

.toast.visible {
  transform: translateY(0);
}

@media (max-width: 900px) {
  .hero-grid,
  .content-grid,
  .project-panel,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .three-column {
    grid-template-columns: 1fr;
  }

  .profile-card {
    max-width: 500px;
  }

  .project-panel {
    gap: 1rem;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 72px;
    right: 1rem;
    left: 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

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

  .nav-links a {
    padding: 0.55rem 0.4rem;
  }

  .theme-toggle {
    align-self: flex-start;
  }

  .hero {
    padding-top: 3.8rem;
  }

  .profile-card-content,
  .teaching-grid,
  .skills-grid,
  .compact-grid,
  .teaching-note {
    grid-template-columns: 1fr;
  }

  .section-heading-row {
    display: block;
  }

  .text-link {
    display: inline-block;
    margin-top: -1rem;
  }

  .publication,
  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .timeline-date {
    font-size: 0.86rem;
  }

  .course-meta,
  .footer-content {
    align-items: flex-start;
    flex-direction: column;
  }

  .teaching-year summary {
    grid-template-columns: 1fr auto;
  }

  .year-label,
  .year-meta {
    grid-column: 1;
  }

  .year-toggle {
    grid-column: 2;
    grid-row: 1 / 3;
  }

  .footer-content {
    gap: 0.4rem;
  }
}

@media print {
  .site-header,
  .hero-actions,
  .filter-row,
  .copy-citation,
  .toast {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .section,
  .hero {
    padding: 2rem 0;
  }

  .profile-card,
  .info-card,
  .course-card {
    box-shadow: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}