/* === Custom Styles for Yueci Deng's Academic Homepage === */

/* --- CSS Custom Properties (Light Theme) --- */
:root {
  --c-bg: #ffffff;
  --c-surface: #f7f9fb;
  --c-surface-alt: #eef2f6;
  --c-text: #111111;
  --c-text-muted: #333333;
  --c-text-secondary: #444444;
  --c-text-note: #666666;
  --c-link: #1772d0;
  --c-link-hover: #f09228;
  --c-accent: #2f7f93;
  --c-accent-dark: #1c4c58;
  --c-border: #d0d7de;
  --c-btn-bg: #f0f3f6;
  --c-btn-hover: #e2e7ec;
  --c-tag-bg: #e8f0fe;
  --c-tag-text: #1a56a0;
  --c-highlight: #fff8c5;
  --c-sup: #c0392b;
}

/* --- Dark Theme --- */

.dark-theme,
html[data-theme="dark"] {
  --c-bg: #1e1e1e;
  --c-surface: #2d2d30;
  --c-surface-alt: #2d2d30;
  --c-text: #ffffff;
  --c-text-muted: #e0e0e0;
  --c-text-secondary: #cccccc;
  --c-text-note: #aaaaaa;
  --c-link: #5dade2;
  --c-link-hover: #85c1e9;
  --c-accent: #5dade2;
  --c-accent-dark: #85c1e9;
  --c-border: #555555;
  --c-btn-bg: #2d2d30;
  --c-btn-hover: #3d3d40;
  --c-tag-bg: #4a3d1a;
  --c-tag-text: #e0c97a;
  --c-highlight: #3a3a2a;
  --c-sup: #ff6b6b;
}



/* --- Base Typography --- */
body, td, th, tr, p, a, li {
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 16px;
  color: var(--c-text);
}

strong {
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 16px;
  color: var(--c-text);
}

h2 {
  margin: 0;
  font-weight: normal;
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 20px;
  color: var(--c-text);
}

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

a:focus, a:hover {
  color: var(--c-link-hover);
  text-decoration: none;
}

span.highlight {
  background-color: var(--c-highlight);
}

sup {
  font-size: 0.8em;
  color: var(--c-sup);
  font-weight: bold;
}

/* --- Page Layout (single-column, centered) --- */
.page {
  width: 100% !important;
  max-width: 900px !important;
  margin: 0 auto !important;
  padding: 0 !important;
  float: none !important;
}

.page__inner-wrap {
  width: 100% !important;
  max-width: none !important;
}

.page__content {
  width: 100% !important;
  max-width: none !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* --- Intro Section (photo + bio) --- */
.intro {
  display: flex;
  align-items: flex-start;
  gap: 2em;
  max-width: 1500px;
  margin: 0 auto 1.5em auto;
  padding: 1.5em 0;
}

.intro-photo {
  flex: 0 0 auto;
  width: 200px;
}

.intro-photo img {
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--c-accent);
}

.intro-bio {
  flex: 1 1 auto;
  min-width: 0;
}

.intro-name {
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--c-text);
  margin: 0 0 0.2em 0;
  border: none;
  padding: 0;
}

.intro-affil {
  font-size: 16px;
  color: var(--c-text-secondary);
  margin: 0 0 0.8em 0;
  font-style: italic;
}

.intro-text {
  color: var(--c-text);
  line-height: 1.7;
  margin: 0 0 1em 0;
  font-size: 15.5px;
}

.intro-text a {
  color: var(--c-link);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(23, 114, 208, 0.3);
  text-underline-offset: 2px;
}

.intro-text a:hover {
  color: var(--c-link-hover);
  text-decoration-color: var(--c-link-hover);
}

.intro-links {
  display: flex;
  gap: 1.2em;
  flex-wrap: wrap;
}

.intro-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  padding: 0.3em 0.8em;
  border: 1px solid var(--c-border);
  border-radius: 6px;
  font-size: 0.9em;
  color: var(--c-text-muted);
  background: var(--c-btn-bg);
  transition: all 0.2s ease;
}

.intro-links a:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
  background: var(--c-surface-alt);
}

/* --- Page Content Text --- */
.page__content p,
.page__content li,
.page__content strong {
  color: var(--c-text);
}

/* --- Card Layout (replaces tables) --- */
.card {
  display: flex;
  align-items: center;
  gap: 1.5em;
  max-width: 1500px;
  margin: 1em auto;
  padding: 1em;
  border-radius: 8px;
  background: var(--c-surface);
}

.card:nth-child(odd) {
  background: var(--c-surface);
}

.card:nth-child(even) {
  background: var(--c-surface-alt);
}

.card-image {
  flex: 0 0 auto;
  width: 280px;
}

.card-image img {
  width: 100%;
  height: auto;
  border-radius: 4px;
}

.card-content {
  flex: 1 1 auto;
  min-width: 0;
}

.card-links {
  margin: 0.4em 0;
}

.card-authors {
  color: var(--c-text-muted);
  margin: 0.3em 0;
  line-height: 1.6;
}

.card-venue {
  color: var(--c-text-secondary);
  font-style: italic;
  margin: 0.2em 0;
}

.card-note {
  color: var(--c-text-note);
  font-size: 0.9em;
  margin: 0.2em 0;
}

.card-desc {
  color: var(--c-text);
  margin-top: 0.5em;
}

.card-desc strong {
  color: var(--c-accent);
}

/* --- Paper Title --- */
.papertitle {
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-accent);
  text-decoration: none;
  display: block;
  margin-bottom: 0.3em;
}

a.papertitle:hover {
  color: var(--c-accent-dark);
}

/* --- Publication Tag (e.g. "Position paper") --- */
.pub-tag {
  display: inline-block;
  background: var(--c-tag-bg);
  color: var(--c-tag-text);
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.85em;
  margin-left: 10px;
  vertical-align: middle;
}

/* --- Section Dividers --- */
.page__content h2 {
  padding-bottom: 0.35em;
  margin-top: 1.8em;
  margin-bottom: 1em;
  border-bottom: 3px solid var(--c-accent);
  font-weight: 700;
  font-size: 22px;
  color: var(--c-text);
  letter-spacing: 0.02em;
}

/* --- Publication Filter Bar --- */
#pub-filter-bar {
  display: flex;
  gap: 0.5em;
  flex-wrap: wrap;
  margin-bottom: 1.5em;
}

.pub-filter-btn {
  padding: 0.4em 1em;
  border: 1px solid var(--c-border);
  border-radius: 999px;
  background: var(--c-btn-bg);
  color: var(--c-text-muted);
  font-size: 0.9em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.pub-filter-btn:hover {
  background: var(--c-btn-hover);
  color: var(--c-text);
}

.pub-filter-btn.active {
  background: var(--c-accent);
  color: #fff;
  border-color: var(--c-accent);
}

.pub-card {
  transition: opacity 0.3s ease;
}

.pub-card.hidden {
  display: none;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
  .intro {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .intro-photo {
    width: 160px;
  }

  .intro-photo img {
    width: 160px;
    height: 160px;
  }

  .intro-links {
    justify-content: center;
  }

  .card {
    flex-direction: column;
    gap: 1em;
  }

  .card-image {
    width: 100%;
    max-width: 300px;
  }

  .page__content .archive {
    width: 100% !important;
    float: none !important;
  }

  .sidebar {
    width: 100% !important;
    margin-right: 0 !important;
    margin-bottom: 1em !important;
  }

  .initial-content {
    flex-direction: column !important;
  }

  .papertitle {
    font-size: 15px;
  }
}

/* --- Author name style (unused, kept for reference) --- */
.name {
  padding-top: 20px;
  margin: 0;
  font-family: 'Lato', Verdana, Helvetica, sans-serif;
  font-size: 32px;
}

.one {
  width: 160px;
  height: 160px;
  position: relative;
}

.two {
  width: 160px;
  height: 160px;
  position: absolute;
  transition: opacity .2s ease-in-out;
}

.fade {
  transition: opacity .2s ease-in-out;
}