:root {
  color-scheme: light;
  --bg: #fbfbfa;
  --surface: #ffffff;
  --surface-muted: #f3f4f2;
  --ink: #18201d;
  --muted: #66706b;
  --faint: #8a938e;
  --line: #e6e8e4;
  --accent: #0f766e;
  --accent-soft: rgba(15, 118, 110, 0.1);
  --shadow: 0 1px 2px rgba(24, 32, 29, 0.04);
  --max-width: 760px;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e1211;
  --surface: #161b19;
  --surface-muted: #161b19;
  --ink: #e8ebe9;
  --muted: #9aa39e;
  --faint: #7c857f;
  --line: #273029;
  --accent: #4fd1be;
  --accent-soft: rgba(79, 209, 190, 0.14);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 0.18em;
  transition: color 0.15s ease;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

h1 {
  margin-bottom: 6px;
  font-family: var(--serif);
  font-size: 2.45rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

h2 {
  margin-bottom: 22px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
}

h3 {
  margin-bottom: 8px;
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.35;
}

p {
  margin-bottom: 1rem;
}

/* Layout shell ---------------------------------------------------------- */

.nav-shell,
.hero,
.block,
.footer-inner {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  gap: 18px;
}

.wordmark {
  color: var(--ink);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
}

.wordmark:hover,
.wordmark:focus-visible {
  color: var(--accent);
  text-decoration: none;
}

.nav-cluster {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px 20px;
  font-size: 0.92rem;
}

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

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent);
  text-decoration: none;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

[data-theme-icon]::before {
  content: "\263E"; /* moon, shown in light mode */
}

html[data-theme="dark"] [data-theme-icon]::before {
  content: "\2600"; /* sun, shown in dark mode */
}

/* Hero ------------------------------------------------------------------ */

.hero {
  display: flex;
  align-items: center;
  gap: 30px;
  padding: 64px 0 52px;
}

.hero-portrait {
  flex: none;
  width: 200px;
  aspect-ratio: 4 / 5;
  height: auto;
  border-radius: 8px;
  object-fit: cover;
  object-position: center 25%;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-role {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 1.02rem;
}

.hero-bio {
  margin-bottom: 16px;
  font-size: 1.05rem;
  color: var(--ink);
  max-width: 56ch;
}

.hero-links {
  margin-bottom: 0;
  font-size: 0.95rem;
  color: var(--faint);
}

.hero-links span {
  margin: 0 8px;
  color: var(--line);
}

/* Generic block --------------------------------------------------------- */

.block {
  padding: 30px 0;
}

.block-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.block-head h2 {
  flex: 1;
}

.prose {
  color: var(--ink);
}

.prose p:last-child {
  margin-bottom: 0;
}

.focus-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.focus-tags li {
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.86rem;
}

/* Publications ---------------------------------------------------------- */

.result-count {
  margin: 0;
  color: var(--faint);
  font-size: 0.82rem;
  white-space: nowrap;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.filter-button {
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

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

.filter-button.is-active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

html[data-theme="dark"] .filter-button.is-active {
  color: #0e1211;
}

.publication-list {
  display: grid;
  gap: 26px;
}

.publication-card {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.publication-card[hidden] {
  display: none;
}

.pub-thumb {
  position: relative;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-muted);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pub-thumb::after {
  content: attr(data-label);
  padding: 0 8px;
  color: var(--faint);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-align: center;
}

.pub-thumb img,
.pub-thumb video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--surface);
}

.pub-body {
  min-width: 0;
}

.publication-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-bottom: 6px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.publication-card h3 {
  margin-bottom: 6px;
}

.publication-card .authors {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.publication-card .authors strong {
  color: var(--ink);
  font-weight: 600;
}

.publication-card .authors .role {
  color: var(--accent);
  font-weight: 600;
}

.publication-card p:not(.authors) {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.94rem;
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
}

.publication-links a {
  padding: 2px 9px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
}

.publication-links a:hover,
.publication-links a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* Footer ---------------------------------------------------------------- */

.site-footer {
  margin-top: 30px;
  padding: 30px 0 56px;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 32px;
}

.footer-note {
  margin: 0;
  max-width: 46ch;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--muted);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--accent);
}

/* Responsive ------------------------------------------------------------ */

@media (max-width: 620px) {
  body {
    font-size: 16px;
  }

  .nav-shell,
  .hero,
  .block,
  .footer-inner {
    width: min(var(--max-width), calc(100% - 32px));
  }

  .nav-links {
    gap: 4px 14px;
    font-size: 0.86rem;
  }

  .hero {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    padding: 40px 0 36px;
  }

  .hero-portrait {
    width: 150px;
  }

  h1 {
    font-size: 1.8rem;
  }

  .publication-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .pub-thumb {
    max-width: 200px;
  }
}

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

  * {
    transition: none !important;
  }
}