/* Coordinated palette: slate-gray navbar + soft blue homepage */

.navbar,
nav.quarto-secondary-nav.color-navbar,
.quarto-banner nav.quarto-secondary-nav {
  background-color: #5d6b78 !important;
  color: #f1f5f9 !important;
}

.navbar .navbar-nav .active {
  background-color: #4a5568 !important;
}

.navbar .navbar-brand,
.navbar .nav-link {
  color: #f1f5f9 !important;
}

.navbar .navbar-brand:hover,
.navbar .nav-link:hover,
.navbar .nav-link:focus {
  color: #ffffff !important;
}

/* Homepage light blue background */
body.quarto-home {
  background-color: #edf4fa !important;
}

body.quarto-home #quarto-content,
body.quarto-home .quarto-container,
body.quarto-home main.content {
  background-color: #edf4fa !important;
}

body.quarto-home footer.footer {
  background-color: #edf4fa !important;
  border-top: 1px solid #d5e3ef;
  padding: 2rem 1.5rem 2.5rem;
  text-align: center;
}

body.quarto-home footer.footer .site-tagline {
  margin: 0;
  font-style: italic;
  font-size: 0.95rem;
  color: #5d6b78;
}

body.quarto-home footer.footer .nav-footer {
  background-color: transparent;
}

/* Single-page homepage: title centered, tools on the right */
body.quarto-home .navbar-container {
  display: flex;
  align-items: center;
}

body.quarto-home .navbar-brand-container {
  flex: 1;
  display: flex;
  justify-content: center;
  margin: 0;
}

body.quarto-home .site-toolbar-left {
  flex-shrink: 0;
  margin-right: 0.5rem;
}

body.quarto-home .quarto-navbar-tools {
  margin-left: auto;
  flex-shrink: 0;
}

body.quarto-home .site-toolbar {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

body.quarto-home .site-tool-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.5rem;
  border: 1px solid rgba(241, 245, 249, 0.35);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  color: #f1f5f9;
  font-size: 0.8rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

body.quarto-home a.site-tool-btn {
  text-decoration: none;
}

body.quarto-home .site-cv-link {
  min-width: 2.4rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

body.quarto-home .site-tool-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(241, 245, 249, 0.55);
}

body.quarto-home .site-lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
}

body.quarto-home .site-lang-btn {
  min-width: 2.1rem;
  padding: 0 0.45rem;
  font-weight: 500;
}

body.quarto-home .site-lang-btn.active {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(241, 245, 249, 0.7);
}

body.quarto-home .site-lang-divider {
  color: rgba(241, 245, 249, 0.55);
  font-size: 0.75rem;
  user-select: none;
}

body.quarto-home.quarto-light .theme-icon-dark {
  display: none;
}

body.quarto-home.quarto-dark .theme-icon-light {
  display: none;
}

/* Night mode */
html[data-theme="dark"] body.quarto-home,
body.quarto-home.quarto-dark {
  background-color: #1a2332 !important;
}

html[data-theme="dark"] body.quarto-home #quarto-content,
html[data-theme="dark"] body.quarto-home .quarto-container,
html[data-theme="dark"] body.quarto-home main.content,
body.quarto-home.quarto-dark #quarto-content,
body.quarto-home.quarto-dark .quarto-container,
body.quarto-home.quarto-dark main.content {
  background-color: #1a2332 !important;
}

html[data-theme="dark"] body.quarto-home footer.footer,
body.quarto-home.quarto-dark footer.footer {
  background-color: #1a2332 !important;
  border-top-color: #2d3a4d;
}

body.quarto-home.quarto-dark .home-section-heading {
  color: #e2e8f0;
  border-bottom-color: #3d4f63;
}

body.quarto-home.quarto-dark .home-section-intro {
  color: #94a3b8;
}

body.quarto-home.quarto-dark .photo-card {
  background: #243044;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

body.quarto-home.quarto-dark .photo-card figcaption {
  color: #cbd5e1;
}

body.quarto-home.quarto-dark .title {
  color: #f1f5f9;
}

body.quarto-home .about-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
}

body.quarto-home.quarto-dark .about-link-text {
  color: #93c5fd;
}

/* Chinese name under photo: 行楷 */
body.quarto-home[data-lang="zh"] .about-entity h1.title {
  font-family: "STXingkai", "华文行楷", "Xingkai SC", "行楷", "KaiTi", "楷体", STKaiti, serif;
  font-weight: 400;
  letter-spacing: 0.06em;
}

/* About bio (right of photo / name / email) */
body.quarto-home .bio-intro {
  max-width: 42rem;
  margin-top: 0.25rem;
}

body.quarto-home .bio-intro p {
  margin: 0 0 1rem;
  line-height: 1.7;
  font-size: 1rem;
  color: #475569;
}

body.quarto-home .bio-intro p:last-child {
  margin-bottom: 0;
}

html[data-theme="dark"] body.quarto-home footer.footer .site-tagline,
body.quarto-home.quarto-dark footer.footer .site-tagline {
  color: #94a3b8;
}

body.quarto-home.quarto-dark .bio-intro p {
  color: #cbd5e1;
}

@media (max-width: 768px) {
  body.quarto-home .bio-intro {
    margin-top: 1.25rem;
    max-width: none;
  }
}

/* Homepage sections: Research, Projects, Photos */
body.quarto-home .home-section {
  max-width: 1080px;
  margin: 2.5rem auto 0;
  padding: 0 1.5rem;
}

body.quarto-home .home-section:last-of-type {
  margin-bottom: 3rem;
}

body.quarto-home .home-section-heading {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
  font-weight: 600;
  color: #334155;
  border-bottom: 2px solid #c5d9e8;
  padding-bottom: 0.5rem;
}

body.quarto-home .home-section-intro {
  margin: 0 0 1.25rem;
  color: #64748b;
  font-size: 0.95rem;
}

/* Research / Projects cards */
body.quarto-home .item-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
}

body.quarto-home .item-card {
  margin: 0;
  min-height: 10.5rem;
  padding: 1.1rem 1.15rem;
  background: #ffffff;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(93, 107, 120, 0.12);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

body.quarto-home .item-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(93, 107, 120, 0.18);
}

body.quarto-home .item-card-tbd {
  border: 1px dashed #b8cfe0;
  background: rgba(255, 255, 255, 0.85);
}

body.quarto-home .item-card-ongoing .item-card-badge {
  color: #1d4ed8;
  background: #dbeafe;
}

body.quarto-home.quarto-dark .item-card-ongoing .item-card-badge {
  color: #93c5fd;
  background: #1e3a5f;
}

body.quarto-home .item-card-badge {
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #5d6b78;
  background: #e8f1f8;
  border-radius: 4px;
  padding: 0.2rem 0.45rem;
}

body.quarto-home .item-card-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: #334155;
  line-height: 1.35;
}

body.quarto-home .item-card-desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.55;
  color: #64748b;
  flex: 1;
}

body.quarto-home.quarto-dark .item-card {
  background: #243044;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

body.quarto-home.quarto-dark .item-card-tbd {
  border-color: #3d4f63;
  background: rgba(36, 48, 68, 0.9);
}

body.quarto-home.quarto-dark .item-card-badge {
  color: #cbd5e1;
  background: #334155;
}

body.quarto-home.quarto-dark .item-card-title {
  color: #e2e8f0;
}

body.quarto-home.quarto-dark .item-card-desc {
  color: #94a3b8;
}

/* Research → subtle publications list */
body.quarto-home .research-pubs {
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid #d5e3ef;
}

body.quarto-home .research-pubs-label {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #94a3b8;
}

body.quarto-home .research-pub-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

body.quarto-home .research-pub-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.75rem;
  padding: 0.35rem 0;
  font-size: 0.88rem;
  line-height: 1.5;
}

body.quarto-home .research-pub-link {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.5rem;
  color: #475569;
  text-decoration: none;
}

body.quarto-home .research-pub-link:hover .research-pub-title {
  color: #1d4ed8;
  text-decoration: underline;
}

body.quarto-home .research-pub-title {
  color: #475569;
}

body.quarto-home .research-pub-meta {
  font-size: 0.78rem;
  color: #94a3b8;
}

body.quarto-home .research-pub-links {
  font-size: 0.78rem;
  color: #94a3b8;
}

body.quarto-home .research-pub-links a {
  color: #64748b;
  text-decoration: none;
}

body.quarto-home .research-pub-links a:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

body.quarto-home.quarto-dark .research-pubs {
  border-top-color: #3d4f63;
}

body.quarto-home.quarto-dark .research-pub-link,
body.quarto-home.quarto-dark .research-pub-title {
  color: #cbd5e1;
}

body.quarto-home.quarto-dark .research-pub-link:hover .research-pub-title {
  color: #93c5fd;
}

body.quarto-home.quarto-dark .research-pub-links a:hover {
  color: #93c5fd;
}

/* Photo gallery */
body.quarto-home .photos-section-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  margin-bottom: 0.15rem;
}

body.quarto-home .photos-section-titles {
  flex: 1;
  min-width: 12rem;
}

body.quarto-home .photos-section-titles .home-section-heading {
  margin-bottom: 0.35rem;
}

body.quarto-home .photos-section-titles .home-section-intro {
  margin-bottom: 0;
}

body.quarto-home .photos-location {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0 0 0.5rem;
  padding: 0.35rem 0.7rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: #475569;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid #c5d9e8;
  border-radius: 999px;
  box-shadow: 0 1px 6px rgba(93, 107, 120, 0.1);
}

body.quarto-home .photos-location .bi {
  font-size: 1rem;
  color: #5d6b78;
}

body.quarto-home.quarto-dark .photos-location {
  color: #cbd5e1;
  background: #243044;
  border-color: #3d4f63;
}

body.quarto-home.quarto-dark .photos-location .bi {
  color: #93c5fd;
}

body.quarto-home .photo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
  align-items: start;
}

body.quarto-home .photo-card {
  margin: 0;
  background: #ffffff;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(93, 107, 120, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

body.quarto-home .photo-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(93, 107, 120, 0.18);
}

body.quarto-home .photo-thumb {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 0.4rem 0.4rem 0;
  border: none;
  background: none;
  cursor: zoom-in;
}

body.quarto-home .photo-thumb img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 22rem;
  margin: 0 auto;
  border-radius: 6px 6px 0 0;
}

body.quarto-home .photo-card figcaption {
  padding: 0.65rem 0.85rem;
  font-size: 0.875rem;
  color: #475569;
  text-align: center;
}

body.quarto-home .photo-lightbox {
  max-width: min(92vw, 1100px);
  width: max-content;
  padding: 0;
  border: none;
  border-radius: 10px;
  background: #1e293b;
  color: #f8fafc;
}

body.quarto-home .photo-lightbox::backdrop {
  background: rgba(30, 41, 59, 0.75);
}

body.quarto-home .photo-lightbox-img {
  display: block;
  max-width: 92vw;
  max-height: 80vh;
  width: auto;
  height: auto;
  margin: 0 auto;
}

body.quarto-home .photo-lightbox-caption {
  margin: 0;
  padding: 0.75rem 1rem 1rem;
  text-align: center;
  font-size: 0.9rem;
  color: #e2e8f0;
}

body.quarto-home .photo-lightbox-close {
  position: absolute;
  top: 0.5rem;
  right: 0.65rem;
  border: none;
  background: transparent;
  color: #f8fafc;
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.15rem 0.4rem;
}

/* Visitor world map */
body.quarto-home .visitor-map-section {
  margin-bottom: 2rem;
}

body.quarto-home .visitor-map-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  margin-bottom: 0.75rem;
}

body.quarto-home .visitor-map-stats {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  font-size: 0.9rem;
  color: #475569;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid #c5d9e8;
  border-radius: 999px;
}

body.quarto-home .visitor-stat strong {
  color: #1d4ed8;
  font-weight: 700;
}

body.quarto-home .visitor-stat-divider {
  color: #94a3b8;
}

body.quarto-home .visitor-map-canvas {
  height: 22rem;
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #c5d9e8;
  box-shadow: 0 2px 14px rgba(93, 107, 120, 0.12);
  background: #e8f1f8;
  z-index: 0;
}

body.quarto-home .visitor-map-status {
  margin: 0.55rem 0 0;
  font-size: 0.8rem;
  color: #64748b;
  text-align: right;
}

body.quarto-home.quarto-dark .visitor-map-stats {
  color: #cbd5e1;
  background: #243044;
  border-color: #3d4f63;
}

body.quarto-home.quarto-dark .visitor-stat strong {
  color: #93c5fd;
}

body.quarto-home.quarto-dark .visitor-map-canvas {
  border-color: #3d4f63;
  background: #1e293b;
}

body.quarto-home.quarto-dark .visitor-map-status {
  color: #94a3b8;
}

@media (max-width: 768px) {
  body.quarto-home .item-grid,
  body.quarto-home .photo-gallery {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.85rem;
  }

  body.quarto-home .navbar-brand-container {
    justify-content: center;
  }

  body.quarto-home .site-toolbar-left {
    margin-right: 0.25rem;
  }

  body.quarto-home .site-toolbar {
    gap: 0.4rem;
  }

  body.quarto-home .site-cv-link {
    min-width: 2.1rem;
    padding: 0 0.4rem;
    font-size: 0.72rem;
  }

  body.quarto-home .site-tool-btn {
    min-width: 1.85rem;
    height: 1.85rem;
    font-size: 0.75rem;
  }
}