/* -------------------------------------------------------------
   Athiya Deviyani — academic site
   Plain CSS, no build step. Edit freely.
   Palette source: Color Hunt ff714b / c71e64 / 4d2d8c / f2f2f2
------------------------------------------------------------- */

:root {
  /* light theme (default) */
  --bg: #ffffff;
  --bg-raised: #f2f2f2;
  --ink: #2a1a4d;
  --ink-soft: #7057a3;
  --muted: #8b76b4;
  --rule: #e4e4e4;
  --purple: #4d2d8c;
  --pink: #c71e64;
  --orange: #ff714b;
  --grey: #f2f2f2;
  --accent: #c71e64;
  --accent-soft: #c71e6414;
  --on-accent: #ffffff;
  --max-w: 760px;

  --display: "Lora", Georgia, "Times New Roman", serif;
  --body: "Lora", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

[data-theme="dark"] {
  --bg: #1c1330;
  --bg-raised: #271c40;
  --ink: #ece8f7;
  --ink-soft: #c2b6df;
  --muted: #9183b8;
  --rule: #3a2c5c;
  --accent: #ff714b;
  --accent-soft: #ff714b22;
  --on-accent: #1c1330;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s ease, color 0.2s ease;
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s ease, color 0.15s ease;
}
a:hover, a:focus-visible {
  color: var(--accent);
  text-decoration-color: var(--accent);
}
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--purple);
}
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3 {
  color: var(--ink);
}

/* ---------- Shell ---------- */

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

header.site-header {
  border-bottom: 1px solid var(--rule);
  padding: 22px 0;
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.site-name {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--purple);
  white-space: nowrap;
}
[data-theme="dark"] .site-name { color: var(--ink); }
.site-name:hover { color: var(--accent); }

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

nav.site-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-family: var(--sans);
  font-size: 0.92rem;
}
nav.site-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}
nav.site-nav a:hover { color: var(--accent); }
nav.site-nav a.active {
  color: var(--accent);
  font-weight: 600;
}

/* theme toggle button */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--rule);
  background: var(--bg-raised);
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0;
  transition: all 0.15s ease;
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.theme-toggle .icon-dark { display: none; }
[data-theme="dark"] .theme-toggle .icon-light { display: none; }
[data-theme="dark"] .theme-toggle .icon-dark { display: inline; }

main { padding: 48px 0 80px; }

footer.site-footer {
  border-top: 1px solid var(--rule);
  padding: 24px 0 48px;
  color: var(--muted);
  font-size: 0.85rem;
  font-family: var(--sans);
}

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

.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
  margin-bottom: 8px;
}

.hero h1 {
  font-size: 2rem;
  margin: 0 0 8px;
}

.hero .subtitle {
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 1rem;
  margin: 0 0 22px;
}

.hero-photo {
  width: 190px;
  height: 190px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--rule);
  flex-shrink: 0;
}
.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.bio p { margin: 0 0 16px; color: var(--ink); }

.social-row {
  display: flex;
  gap: 10px;
  margin-top: 22px;
  margin-bottom: 28px;
  flex-wrap: wrap;
  font-family: var(--sans);
}
.social-row a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.85rem;
  border: 1px solid var(--rule);
  padding: 6px 14px;
  border-radius: 100px;
  transition: all 0.15s ease;
}
.social-row a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

@media (max-width: 600px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: left;
  }
  .hero-photo { width: 120px; height: 120px; order: -1; margin-bottom: 4px; }
  .hero h1 { font-size: 1.65rem; }
}

/* ---------- Section headers ---------- */

.section-title {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 48px 0 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}
.section-title:first-of-type { margin-top: 0; }

.section-link { margin-top: -8px; margin-bottom: 28px; }
.section-link a {
  font-family: var(--sans);
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--accent);
  font-weight: 600;
}
.section-link a:hover { text-decoration: underline; }
.section-link a::after { content: " →"; }

/* ---------- News: scrollable list ---------- */

.news-scroll {
  max-height: 440px;
  overflow-y: auto;
  border: none;
  border-radius: 16px;
  background: var(--bg-raised);
  padding: 8px 0;
  box-shadow: 0 1px 3px rgba(77, 45, 140, 0.08), 0 8px 24px rgba(77, 45, 140, 0.06);
}
.news-scroll::-webkit-scrollbar { width: 8px; }
.news-scroll::-webkit-scrollbar-track { background: transparent; }
.news-scroll::-webkit-scrollbar-thumb {
  background: rgba(77, 45, 140, 0.18);
  border-radius: 4px;
}
.news-scroll::-webkit-scrollbar-thumb:hover { background: rgba(77, 45, 140, 0.32); }

.ranked-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.ranked-list li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  padding: 20px 22px;
  border-bottom: 1px solid rgba(77, 45, 140, 0.1);
}
.ranked-list li:last-child { border-bottom: none; }
.ranked-list li:hover { background: rgba(77, 45, 140, 0.04); }

.ranked-list .rank {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.78rem;
  color: var(--accent);
  padding-top: 2px;
}
.ranked-list .meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
}
.ranked-list .date {
  font-family: var(--sans);
  font-size: 0.74rem;
  color: var(--muted);
  white-space: nowrap;
}
.ranked-list p { margin: 0; color: var(--ink); font-size: 0.97rem; }

@media (max-width: 600px) {
  .ranked-list li { grid-template-columns: 1fr; gap: 6px; padding: 14px 16px; }
  .ranked-list .rank { display: none; }
  .news-scroll { max-height: 400px; }
}

/* ---------- Selected publications (homepage) ---------- */

.selected-pub {
  border: none;
  border-radius: 16px;
  padding: 20px 22px;
  margin-bottom: 14px;
  background: var(--bg-raised);
  box-shadow: 0 1px 3px rgba(77, 45, 140, 0.08), 0 8px 24px rgba(77, 45, 140, 0.06);
}
.selected-pub:last-child { margin-bottom: 0; }
.selected-pub .pub-title {
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--purple);
  margin: 0 0 6px;
}
[data-theme="dark"] .selected-pub .pub-title { color: var(--ink); }
.selected-pub .pub-authors {
  font-family: var(--sans);
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin: 0 0 4px;
}
.selected-pub .pub-authors .me { color: var(--ink); font-weight: 600; }
.selected-pub .pub-venue {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0 0 10px;
  font-style: italic;
}
.selected-pub .pub-links {
  display: flex;
  gap: 14px;
  font-family: var(--sans);
  font-size: 0.85rem;
}
.selected-pub .pub-links a { color: var(--accent); text-decoration: none; font-weight: 600; }
.selected-pub .pub-links a:hover { text-decoration: underline; }

/* ---------- Publication / project entries (publications.html) ---------- */

.pub-list, .project-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.pub-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}
.pub-item:first-child { padding-top: 0; }
.pub-item .pub-title {
  font-family: var(--display);
  font-size: 1.08rem;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--purple);
}
[data-theme="dark"] .pub-item .pub-title { color: var(--ink); }
.pub-item .pub-authors {
  font-family: var(--sans);
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin: 0 0 6px;
}
.pub-item .pub-authors .me {
  font-weight: 600;
  color: var(--ink);
}
.pub-item .pub-venue {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-style: italic;
  margin: 0 0 8px;
}
.pub-links {
  display: flex;
  gap: 14px;
  font-size: 0.86rem;
  font-family: var(--sans);
}
.pub-links a { text-decoration: none; color: var(--accent); font-weight: 600; }
.pub-links a:hover { text-decoration: underline; }

.year-heading {
  font-family: var(--sans);
  font-weight: 700;
  color: var(--accent);
  font-size: 1.25rem;
  margin: 36px 0 4px;
  letter-spacing: 0.02em;
}
.year-heading:first-of-type { margin-top: 8px; }

.page-intro {
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 0.92rem;
  margin: 0 0 8px;
}

.page-divider {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 48px 0 8px;
}

/* ---------- Teaching ---------- */

.teaching-block { margin-bottom: 36px; }
.teaching-block h3 {
  font-size: 1.08rem;
  margin: 0 0 12px;
  color: var(--purple);
}
[data-theme="dark"] .teaching-block h3 { color: var(--ink); }
.teaching-block p { color: var(--ink-soft); font-family: var(--sans); }
.teaching-block ul {
  margin: 0;
  padding-left: 20px;
}
.teaching-block li { margin-bottom: 10px; }
.teaching-block li ul { margin-top: 6px; }
.teaching-block li li { font-size: 0.94rem; color: var(--ink-soft); margin-bottom: 4px; }

/* ---------- CV page ---------- */

.cv-download {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 10px 20px;
  border-radius: 100px;
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.92rem;
  margin: 8px 0 8px;
  transition: all 0.15s ease;
}
.cv-download:hover {
  background: var(--accent);
  color: var(--on-accent);
}

embed.cv-embed {
  width: 100%;
  height: 75vh;
  border: 1px solid var(--rule);
  border-radius: 10px;
  margin-top: 24px;
}

/* ---------- misc ---------- */

.muted { color: var(--muted); font-family: var(--sans); font-size: 0.9rem; }
.tag {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 9px;
  border-radius: 100px;
  margin-right: 8px;
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  main { padding: 36px 0 64px; }
  .wrap { padding: 0 18px; }
  embed.cv-embed { height: 60vh; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}