/* Academic researcher site template
   - Pure HTML/CSS/JS (no build step)
   - Designed for GitHub Pages
   - Replace placeholder content and assets in /assets/
*/

:root {
  /* Typography */
  --font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Layout */
  --maxw: 1120px;
  --radius: 8px;

  /* Light theme (default) */
  --bg: #ffffff;
  --surface: #f7f7fb;
  --surface-2: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --shadow: rgba(2, 6, 23, 0.08);
  --accent: #0f766e;
  --accent-2: #b45309;
  --link: #0f5f8f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --surface: rgba(255, 255, 255, 0.06);
    --surface-2: rgba(255, 255, 255, 0.04);
    --text: #e5e7eb;
    --muted: #a1a1aa;
    --border: rgba(255, 255, 255, 0.14);
    --shadow: rgba(0, 0, 0, 0.35);
    --accent: #5eead4;
    --accent-2: #fbbf24;
    --link: #7dd3fc;
  }
}

/* Explicit override via JS toggle */
html[data-theme="light"] {
  --bg: #ffffff;
  --surface: #f7f7fb;
  --surface-2: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --border: #e2e8f0;
  --shadow: rgba(2, 6, 23, 0.08);
  --accent: #0f766e;
  --accent-2: #b45309;
  --link: #0f5f8f;
}

html[data-theme="dark"] {
  --bg: #0b1220;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-2: rgba(255, 255, 255, 0.04);
  --text: #e5e7eb;
  --muted: #a1a1aa;
  --border: rgba(255, 255, 255, 0.14);
  --shadow: rgba(0, 0, 0, 0.35);
  --accent: #5eead4;
  --accent-2: #fbbf24;
  --link: #7dd3fc;
}

* { box-sizing: border-box; }

html {
  color-scheme: light dark;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

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

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 10px 12px;
  border-radius: 10px;
}

.skip-link:focus {
  left: 12px;
  z-index: 999;
}

header.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg), transparent 10%);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 20px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 220px;
}

.brand a {
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand .subtitle {
  color: var(--muted);
  font-size: 0.92rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
}

.nav a[aria-current="page"] {
  color: var(--text);
  background: var(--surface);
  border-color: var(--border);
  text-decoration: none;
}

.nav .cta {
  color: var(--text);
  background: linear-gradient(135deg, color-mix(in oklab, var(--accent), transparent 10%), color-mix(in oklab, var(--accent-2), transparent 10%));
  border: 1px solid color-mix(in oklab, var(--border), transparent 10%);
}

.nav .cta:hover { text-decoration: none; filter: brightness(1.03); }

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
  cursor: pointer;
}

.hero {
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  overflow: hidden;
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--bg), transparent 0%), color-mix(in oklab, var(--bg), transparent 0%)),
    url("../img/postal-square-building.jpg");
  background-size: cover;
  background-position: center;
  box-shadow: 0 10px 30px var(--shadow);
}

.hero-inner {
  padding: 34px 26px;
  background: linear-gradient(135deg, color-mix(in oklab, var(--bg), transparent 6%), color-mix(in oklab, var(--bg), transparent 24%));
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.0rem, 4.2vw, 3.2rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.hero p.lede {
  margin: 14px 0 0 0;
  max-width: 72ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero .meta {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  color: var(--muted);
  font-size: 0.95rem;
}

.pills {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface), transparent 0%);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero .actions {
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.btn:hover { text-decoration: none; filter: brightness(1.02); }

.btn.primary {
  border-color: color-mix(in oklab, var(--accent), var(--border) 40%);
  background: linear-gradient(135deg, color-mix(in oklab, var(--accent), transparent 16%), color-mix(in oklab, var(--accent-2), transparent 18%));
}

.grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1.65fr 1fr;
  gap: 18px;
  align-items: start;
}

@media (max-width: 880px) {
  .grid { grid-template-columns: 1fr; }
  .brand { min-width: 0; }
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  box-shadow: 0 8px 22px var(--shadow);
}

.card.pad { padding: 18px; }

.card h2, .card h3 { margin: 0 0 10px 0; letter-spacing: -0.02em; }
.card p { margin: 10px 0; color: var(--muted); }

.section-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.section-title.stacked {
  display: block;
}

.section-title small {
  color: var(--muted);
  font-size: 0.9rem;
}

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

.list li {
  padding: 12px 0;
  border-top: 1px solid var(--border);
}

.list li:first-child { border-top: none; padding-top: 0; }

.entry {
  padding: 16px 0;
  border-top: 1px solid var(--border);
}

.entry:first-child { border-top: none; padding-top: 0; }

.entry h3 {
  margin: 8px 0 6px 0;
  font-size: 1.08rem;
}

.entry .byline,
.entry .venue {
  color: var(--muted);
  margin: 6px 0;
}

.entry-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}

.entry-links a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.9rem;
}

.entry-links a:hover {
  text-decoration: none;
  filter: brightness(1.02);
}

details {
  margin-top: 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  padding: 10px 12px;
}

summary {
  cursor: pointer;
  font-weight: 700;
}

details p {
  margin-top: 10px;
}

.kv {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 8px 12px;
  margin: 0;
}

.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

.profile {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 12px;
  align-items: center;
}

.avatar {
  width: 74px;
  height: 74px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
}

.avatar img { width: 74px; height: 74px; object-fit: cover; }

.profile .name { font-weight: 800; letter-spacing: -0.02em; }
.profile .role { color: var(--muted); font-size: 0.95rem; margin-top: 2px; }

.social {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.social a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  color: var(--text);
  font-size: 0.92rem;
}

.social a:hover { text-decoration: none; filter: brightness(1.02); }

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.82rem;
}

.timeline {
  border-left: 2px solid var(--border);
  padding-left: 14px;
  margin: 0;
}

.timeline .item {
  margin: 14px 0 0 0;
  padding: 12px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}

.timeline .item:first-child { margin-top: 0; }

.timeline .when {
  color: var(--muted);
  font-size: 0.92rem;
}

.timeline .what {
  margin-top: 6px;
  font-weight: 700;
}

.timeline .where {
  margin-top: 4px;
  color: var(--muted);
}

.timeline .bullets {
  margin: 10px 0 0 18px;
  color: var(--muted);
}

.form-row {
  display: grid;
  gap: 10px;
}

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font: inherit;
}

textarea { min-height: 140px; resize: vertical; }

footer {
  margin-top: 28px;
  border-top: 1px solid var(--border);
  padding: 16px 0 24px 0;
  color: var(--muted);
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.small { font-size: 0.92rem; color: var(--muted); }