/* ============================================================
   custom.css — Site-wide additions for nvnsthapa.github.io
   Dark mode · Scroll-reveal · Fieldwork map · Teaching section
   ============================================================ */

/* ----------------------------------------------------------
   1. CSS CUSTOM PROPERTIES (Light & Dark themes)
   ---------------------------------------------------------- */
:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-card: #ffffff;
  --bg-navbar: #f5f5f5;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-muted: #868e96;
  --border-color: #dee2e6;
  --accent-color: #0062cc;
  --accent-hover: #004fa3;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.07);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --transition-speed: 0.3s;
}

[data-theme="dark"] {
  --bg-primary: #121212;
  --bg-secondary: #1e1e1e;
  --bg-card: #1e1e1e;
  --bg-navbar: #1a1a1a;
  --text-primary: #e8e8e8;
  --text-secondary: #aaaaaa;
  --text-muted: #777777;
  --border-color: #333333;
  --accent-color: #4ea8ff;
  --accent-hover: #80c1ff;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.55);
}

/* ----------------------------------------------------------
   2. GLOBAL DARK-MODE OVERRIDES
   ---------------------------------------------------------- */
[data-theme="dark"] body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

[data-theme="dark"] .navbar {
  background-color: var(--bg-navbar) !important;
  border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .navbar-brand,
[data-theme="dark"] .nav-link {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .nav-link:hover {
  color: var(--accent-color) !important;
}

[data-theme="dark"] .content,
[data-theme="dark"] main {
  background-color: var(--bg-primary);
}

[data-theme="dark"] footer {
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
}

[data-theme="dark"] .card {
  background-color: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

[data-theme="dark"] .card-title,
[data-theme="dark"] .card-text {
  color: var(--text-primary);
}

[data-theme="dark"] h1, [data-theme="dark"] h2,
[data-theme="dark"] h3, [data-theme="dark"] h4,
[data-theme="dark"] h5, [data-theme="dark"] h6 {
  color: var(--text-primary);
}

[data-theme="dark"] p,
[data-theme="dark"] li {
  color: var(--text-secondary);
}

[data-theme="dark"] a {
  color: var(--accent-color);
}

[data-theme="dark"] a:hover {
  color: var(--accent-hover);
}

[data-theme="dark"] .academic-kicker,
[data-theme="dark"] .eyebrow {
  color: var(--text-muted);
}

[data-theme="dark"] .academic-hero {
  background-color: var(--bg-primary);
}

[data-theme="dark"] .academic-hero__profile > div {
  color: var(--text-secondary);
}

[data-theme="dark"] .research-focus {
  background-color: var(--bg-secondary);
}

[data-theme="dark"] .research-focus article {
  background-color: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .research-focus article h3 {
  color: var(--text-primary);
}

/* ----------------------------------------------------------
   RESEARCH FOCUS SPOTLIGHT
   ---------------------------------------------------------- */
.research-spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(260px, 0.72fr);
  gap: 1rem;
  align-items: stretch;
}

.research-spotlight__feature {
  position: relative;
  display: flex;
  min-width: 0;
  overflow: hidden;
  flex-direction: column;
  padding: 1.45rem;
  border: 1px solid var(--academic-line);
  border-radius: 8px;
  background: var(--academic-surface);
  box-shadow: 0 14px 34px rgba(32, 42, 51, 0.07);
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease;
}

.research-spotlight__feature::before {
  display: block;
  width: 86px;
  height: 4px;
  margin-bottom: 1.2rem;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--academic-accent), var(--academic-blue));
  content: "";
}

.research-spotlight__feature:hover {
  border-color: rgba(143, 29, 29, 0.2);
  transform: translateY(-3px);
  box-shadow: 0 18px 38px rgba(23, 33, 43, 0.12);
}

.research-spotlight__feature.is-updating h3,
.research-spotlight__feature.is-updating .research-focus__tagline,
.research-spotlight__feature.is-updating [data-research-feature-description],
.research-spotlight__feature.is-updating .research-spotlight__facts {
  animation: researchFeatureIn 0.24s ease;
}

@keyframes researchFeatureIn {
  from {
    opacity: 0.68;
    transform: translateY(5px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.research-spotlight__eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  margin-bottom: 0.85rem;
}

.research-spotlight__eyebrow span:first-child {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #17212b;
  color: #ffffff;
  font-size: 0.82rem;
  font-weight: 800;
}

.research-spotlight__eyebrow span:last-child {
  color: var(--academic-accent);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.research-spotlight__feature h3 {
  margin-bottom: 0.5rem;
  color: var(--academic-ink);
  font-family: "Roboto Slab", Georgia, serif;
  font-size: 1.32rem;
  line-height: 1.28;
}

.research-focus__tagline {
  margin: 0 0 0.9rem;
  color: var(--accent-color, #8f1d1d);
  font-size: 0.94rem;
  font-weight: 600;
  font-style: italic;
  line-height: 1.45;
}

.research-spotlight__feature p:not(.research-focus__tagline) {
  margin: 0;
  color: var(--text-secondary, var(--academic-muted));
  line-height: 1.75;
}

.research-spotlight__facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.85rem;
  margin: 1.3rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--academic-line);
}

.research-spotlight__facts div {
  min-width: 0;
}

.research-spotlight__facts dt {
  margin-bottom: 0.22rem;
  color: var(--academic-accent);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.research-spotlight__facts dd {
  margin: 0;
  color: var(--academic-ink);
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.35;
}

.research-spotlight__selector {
  display: grid;
  gap: 0.75rem;
  align-content: stretch;
}

.research-spotlight__item {
  position: relative;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  width: 100%;
  min-width: 0;
  padding: 0.85rem;
  border: 1px solid var(--academic-line);
  border-radius: 8px;
  background: var(--academic-surface);
  color: var(--academic-ink);
  cursor: pointer;
  font: inherit;
  text-align: left;
  box-shadow: 0 10px 24px rgba(32, 42, 51, 0.045);
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    background-color 0.18s ease;
}

.research-spotlight__item::before {
  position: absolute;
  top: 0.65rem;
  bottom: 0.65rem;
  left: 0;
  width: 3px;
  border-radius: 0 999px 999px 0;
  background: transparent;
  content: "";
}

.research-spotlight__item:hover,
.research-spotlight__item:focus {
  border-color: rgba(143, 29, 29, 0.24);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(23, 33, 43, 0.1);
  outline: none;
}

.research-spotlight__item:focus-visible {
  box-shadow: 0 0 0 3px rgba(143, 29, 29, 0.18), 0 14px 28px rgba(23, 33, 43, 0.1);
}

.research-spotlight__item.is-active {
  border-color: rgba(143, 29, 29, 0.34);
  background: linear-gradient(135deg, #fffdfa, #f7fafb);
}

.research-spotlight__item.is-active::before {
  background: var(--academic-accent);
}

.research-spotlight__item span {
  display: inline-flex;
  grid-row: 1 / span 2;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(32, 42, 51, 0.1);
  border-radius: 50%;
  background: var(--academic-panel);
  color: var(--academic-blue);
  font-size: 0.84rem;
  font-weight: 800;
}

.research-spotlight__item.is-active span {
  background: #17212b;
  color: #ffffff;
}

.research-spotlight__item strong,
.research-spotlight__item em {
  grid-column: 2;
}

.research-spotlight__item strong {
  overflow-wrap: anywhere;
  color: var(--academic-ink);
  font-size: 0.96rem;
  line-height: 1.25;
}

.research-spotlight__item em {
  color: var(--academic-muted);
  font-size: 0.82rem;
  font-style: normal;
  line-height: 1.35;
}

[data-theme="dark"] .research-focus__tagline,
[data-theme="dark"] .research-spotlight__eyebrow span:last-child,
[data-theme="dark"] .research-spotlight__facts dt {
  color: var(--accent-color);
}

[data-theme="dark"] .research-spotlight__feature,
[data-theme="dark"] .research-spotlight__item {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .research-spotlight__feature h3,
[data-theme="dark"] .research-spotlight__facts dd,
[data-theme="dark"] .research-spotlight__item,
[data-theme="dark"] .research-spotlight__item strong {
  color: var(--text-primary);
}

[data-theme="dark"] .research-spotlight__feature p:not(.research-focus__tagline),
[data-theme="dark"] .research-spotlight__item em {
  color: var(--text-secondary);
}

[data-theme="dark"] .research-spotlight__facts {
  border-color: var(--border-color);
}

[data-theme="dark"] .research-spotlight__item span {
  background: #151d22;
  border-color: var(--border-color);
  color: var(--accent-color);
}

[data-theme="dark"] .research-spotlight__item.is-active {
  background: #20282f;
}

[data-theme="dark"] .research-spotlight__item.is-active span,
[data-theme="dark"] .research-spotlight__eyebrow span:first-child {
  background: var(--accent-color);
  color: #0d1216;
}

@media (max-width: 820px) {
  .research-spotlight {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575px) {
  .research-spotlight__feature {
    padding: 1.1rem;
  }

  .research-spotlight__feature h3 {
    font-size: 1.12rem;
  }

  .research-spotlight__facts {
    grid-template-columns: 1fr;
  }

  .research-spotlight__item {
    grid-template-columns: 38px minmax(0, 1fr);
    padding: 0.75rem;
  }

  .research-spotlight__item span {
    width: 38px;
    height: 38px;
  }
}

/* ----------------------------------------------------------
   9. ORCID & GITHUB HERO LINK STYLES
   ---------------------------------------------------------- */

[data-theme="dark"] .academic-narrative {
  background-color: var(--bg-primary);
}

[data-theme="dark"] .selected-publications {
  background-color: var(--bg-secondary);
}

[data-theme="dark"] .selected-publications article {
  background-color: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .publication-grid article span {
  color: var(--text-muted);
}

/* ----------------------------------------------------------
   HOMEPAGE SELECTED PUBLICATIONS — visual cards
   ---------------------------------------------------------- */
.publication-grid .publication-card {
  display: flex;
  overflow: hidden;
  flex-direction: column;
  padding: 0;
}

.publication-card__figure {
  position: relative;
  height: clamp(104px, 12vw, 136px);
  margin: 0;
  overflow: hidden;
  border-bottom: 1px solid var(--academic-line);
  background: var(--academic-panel);
}

.publication-card__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left top;
  transition: transform 0.24s ease;
}

.publication-card:hover .publication-card__figure img {
  transform: scale(1.035);
}

.publication-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.1rem 1.2rem 1.2rem;
}

.publication-card .pub-card-actions {
  margin-top: auto;
  padding-top: 0.9rem;
}

[data-theme="dark"] .publication-card__figure {
  background: #151d22;
  border-color: var(--border-color);
}

[data-theme="dark"] .highlight-grid article {
  background-color: var(--bg-card);
}

/* ----------------------------------------------------------
   HOMEPAGE HIGHLIGHTS SPOTLIGHT
   ---------------------------------------------------------- */
.highlight-spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1.36fr) minmax(250px, 0.72fr);
  gap: 1rem;
  align-items: stretch;
}

.highlight-feature {
  display: flex;
  min-width: 0;
  overflow: hidden;
  flex-direction: column;
  border: 1px solid var(--academic-line);
  border-radius: 8px;
  background: var(--academic-surface);
  box-shadow: 0 14px 34px rgba(32, 42, 51, 0.07);
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease;
}

.highlight-feature:hover {
  border-color: rgba(143, 29, 29, 0.2);
  transform: translateY(-3px);
  box-shadow: 0 18px 38px rgba(23, 33, 43, 0.12);
}

.highlight-feature.is-updating .highlight-feature__media img,
.highlight-feature.is-updating .highlight-feature__body {
  animation: highlightFeatureIn 0.24s ease;
}

@keyframes highlightFeatureIn {
  from {
    opacity: 0.68;
    transform: translateY(5px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.highlight-feature__media {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 9;
  border-bottom: 1px solid var(--academic-line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.62), rgba(255, 255, 255, 0)),
    var(--academic-panel);
}

.highlight-feature__media img {
  width: 100%;
  height: 100%;
  padding: 1rem;
  object-fit: contain;
}

.highlight-feature__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.25rem;
}

.highlight-feature__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.8rem;
}

.highlight-feature__meta span:first-child {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0.28rem 0.55rem;
  border: 1px solid rgba(143, 29, 29, 0.2);
  border-radius: 999px;
  background: rgba(143, 29, 29, 0.06);
  color: var(--academic-accent);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.highlight-feature__meta span:last-child {
  color: var(--academic-muted);
  font-size: 0.82rem;
  font-weight: 600;
}

.highlight-feature__body h3 {
  margin-bottom: 0.7rem;
  color: var(--academic-ink);
  font-family: "Roboto Slab", Georgia, serif;
  font-size: 1.28rem;
  line-height: 1.28;
}

.highlight-feature__body p {
  margin-bottom: 1.1rem;
  color: var(--academic-muted);
  line-height: 1.65;
}

.highlight-feature__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  margin-top: auto;
  padding: 0.45rem 0.82rem;
  border: 1px solid rgba(32, 42, 51, 0.14);
  border-radius: 999px;
  background: #17212b;
  color: #ffffff;
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.2;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background-color 0.18s ease;
}

.highlight-feature__link:hover,
.highlight-feature__link:focus {
  background: var(--academic-accent);
  color: #ffffff;
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(23, 33, 43, 0.18);
}

.highlight-feature__link--button {
  cursor: pointer;
  font-family: inherit;
}

.highlight-selector {
  display: grid;
  gap: 0.75rem;
  align-content: stretch;
}

.highlight-selector__item {
  position: relative;
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 0.75rem;
  align-items: center;
  width: 100%;
  min-width: 0;
  padding: 0.65rem;
  border: 1px solid var(--academic-line);
  border-radius: 8px;
  background: var(--academic-surface);
  color: var(--academic-ink);
  cursor: pointer;
  font: inherit;
  text-align: left;
  box-shadow: 0 10px 24px rgba(32, 42, 51, 0.045);
  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    background-color 0.18s ease;
}

.highlight-selector__item::before {
  position: absolute;
  top: 0.65rem;
  bottom: 0.65rem;
  left: 0;
  width: 3px;
  border-radius: 0 999px 999px 0;
  background: transparent;
  content: "";
}

.highlight-selector__item:hover,
.highlight-selector__item:focus {
  border-color: rgba(143, 29, 29, 0.24);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(23, 33, 43, 0.1);
  outline: none;
}

.highlight-selector__item:focus-visible {
  box-shadow: 0 0 0 3px rgba(143, 29, 29, 0.18), 0 14px 28px rgba(23, 33, 43, 0.1);
}

.highlight-selector__item.is-active {
  border-color: rgba(143, 29, 29, 0.34);
  background: linear-gradient(135deg, #fffdfa, #f7fafb);
}

.highlight-selector__item.is-active::before {
  background: var(--academic-accent);
}

.highlight-selector__item img {
  width: 74px;
  aspect-ratio: 4 / 3;
  border: 1px solid rgba(32, 42, 51, 0.08);
  border-radius: 6px;
  background: var(--academic-panel);
  object-fit: contain;
}

.highlight-selector__item span {
  display: grid;
  min-width: 0;
  gap: 0.18rem;
}

.highlight-selector__item small {
  color: var(--academic-accent);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.highlight-selector__item strong {
  overflow-wrap: anywhere;
  color: var(--academic-ink);
  font-size: 0.95rem;
  line-height: 1.25;
}

.highlight-selector__item em {
  color: var(--academic-muted);
  font-size: 0.8rem;
  font-style: normal;
  line-height: 1.35;
}

.highlight-lightbox:not([hidden]) {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.highlight-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(12, 20, 28, 0.74);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.highlight-lightbox__dialog {
  position: relative;
  z-index: 1;
  width: min(940px, 100%);
  max-height: calc(100vh - 2.5rem);
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  background: var(--academic-surface);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

.highlight-lightbox__dialog img {
  width: 100%;
  max-height: calc(100vh - 9rem);
  border-radius: 6px;
  background: var(--academic-panel);
  object-fit: contain;
}

.highlight-lightbox__dialog p {
  margin: 0.75rem 2.8rem 0 0;
  color: var(--academic-ink);
  font-weight: 600;
  line-height: 1.45;
}

.highlight-lightbox__close {
  position: absolute;
  right: 0.65rem;
  bottom: 0.65rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(32, 42, 51, 0.14);
  border-radius: 50%;
  background: #17212b;
  color: #ffffff;
  cursor: pointer;
  font-size: 1.4rem;
  line-height: 1;
}

.highlight-lightbox__close:hover,
.highlight-lightbox__close:focus {
  background: var(--academic-accent);
  outline: none;
}

body.highlight-lightbox-open {
  overflow: hidden;
}

[data-theme="dark"] .highlight-feature,
[data-theme="dark"] .highlight-selector__item,
[data-theme="dark"] .highlight-lightbox__dialog {
  background: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .highlight-feature__media,
[data-theme="dark"] .highlight-selector__item img,
[data-theme="dark"] .highlight-lightbox__dialog img {
  background: #151d22;
  border-color: var(--border-color);
}

[data-theme="dark"] .highlight-feature__media {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0)),
    #151d22;
}

[data-theme="dark"] .highlight-feature__body h3,
[data-theme="dark"] .highlight-selector__item,
[data-theme="dark"] .highlight-selector__item strong,
[data-theme="dark"] .highlight-lightbox__dialog p {
  color: var(--text-primary);
}

[data-theme="dark"] .highlight-feature__body p,
[data-theme="dark"] .highlight-feature__meta span:last-child,
[data-theme="dark"] .highlight-selector__item em {
  color: var(--text-secondary);
}

[data-theme="dark"] .highlight-selector__item.is-active {
  background: #20282f;
}

[data-theme="dark"] .highlight-feature__meta span:first-child,
[data-theme="dark"] .highlight-selector__item small {
  color: var(--accent-color);
}

[data-theme="dark"] .highlight-feature__link {
  color: #ffffff;
}

@media (max-width: 820px) {
  .highlight-spotlight {
    grid-template-columns: 1fr;
  }

  .highlight-selector {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575px) {
  .highlight-feature__body {
    padding: 1rem;
  }

  .highlight-feature__body h3 {
    font-size: 1.08rem;
  }

  .highlight-feature__media img {
    padding: 0.65rem;
  }

  .highlight-selector__item {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .highlight-selector__item img {
    width: 64px;
  }

  .highlight-lightbox:not([hidden]) {
    padding: 0.75rem;
  }
}

[data-theme="dark"] .home-section {
  background-color: var(--bg-primary);
}

[data-theme="dark"] .badge.primary-color {
  background-color: #004fa3 !important;
  color: #fff !important;
}

[data-theme="dark"] .project-portfolio-card {
  background-color: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .project-detail__hero,
[data-theme="dark"] .project-detail__card,
[data-theme="dark"] .project-detail__figure,
[data-theme="dark"] .project-detail__publication-card {
  background-color: var(--bg-card);
  border-color: var(--border-color);
}

[data-theme="dark"] .project-detail__publication-card figure {
  background: #151d22;
  border-color: var(--border-color);
}

[data-theme="dark"] .project-detail__hero figcaption,
[data-theme="dark"] .project-detail__figure figcaption,
[data-theme="dark"] .project-detail__lead,
[data-theme="dark"] .project-detail__card p,
[data-theme="dark"] .project-detail__publication-card p {
  color: var(--text-secondary);
}

[data-theme="dark"] .project-detail__publication-card h3,
[data-theme="dark"] .project-detail__publication-card em,
[data-theme="dark"] .project-detail__section-heading h2 {
  color: var(--text-primary);
}

[data-theme="dark"] .publication-item {
  border-color: var(--border-color);
}

[data-theme="dark"] .publication-year {
  color: var(--text-muted);
}

[data-theme="dark"] .activity-event {
  border-color: var(--border-color);
  background-color: var(--bg-card);
}

[data-theme="dark"] .activity-date {
  color: var(--text-muted);
}

[data-theme="dark"] .btn-primary {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

/* ----------------------------------------------------------
   3. DARK MODE TOGGLE BUTTON
   ---------------------------------------------------------- */
#dark-mode-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: transparent;
  transition: background var(--transition-speed), transform 0.2s;
  margin-left: 8px;
  color: var(--text-primary);
  font-size: 1.1rem;
  vertical-align: middle;
}

#dark-mode-toggle:hover {
  background-color: rgba(128,128,128,0.15);
  transform: rotate(20deg);
}

#dark-mode-toggle .icon-sun,
#dark-mode-toggle .icon-moon {
  display: none;
  line-height: 1;
}

[data-theme="light"] #dark-mode-toggle .icon-moon,
:root:not([data-theme]) #dark-mode-toggle .icon-moon {
  display: inline;
}

[data-theme="dark"] #dark-mode-toggle .icon-sun {
  display: inline;
}

/* ----------------------------------------------------------
   4. SCROLL-REVEAL ANIMATIONS
   ---------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.reveal--left {
  transform: translateX(-28px);
}

.reveal.reveal--right {
  transform: translateX(28px);
}

.reveal.is-visible {
  opacity: 1;
  transform: translate(0, 0);
}

/* Stagger children inside a reveal container */
.reveal-group > * {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal-group.is-visible > *:nth-child(1) { transition-delay: 0.05s; opacity:1; transform:none; }
.reveal-group.is-visible > *:nth-child(2) { transition-delay: 0.15s; opacity:1; transform:none; }
.reveal-group.is-visible > *:nth-child(3) { transition-delay: 0.25s; opacity:1; transform:none; }
.reveal-group.is-visible > *:nth-child(4) { transition-delay: 0.35s; opacity:1; transform:none; }
.reveal-group.is-visible > *:nth-child(5) { transition-delay: 0.45s; opacity:1; transform:none; }
.reveal-group.is-visible > *:nth-child(6) { transition-delay: 0.55s; opacity:1; transform:none; }

/* ----------------------------------------------------------
   5. FIELDWORK MAP SECTION
   ---------------------------------------------------------- */
.fieldwork-map-section {
  padding: 4rem 0;
  background-color: var(--bg-secondary);
}

[data-theme="dark"] .fieldwork-map-section {
  background-color: #161616;
}

.fieldwork-map-section .academic-section__heading {
  margin-bottom: 2rem;
}

#fieldwork-map {
  width: 100%;
  height: 380px;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.fieldwork-map-section .map-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-top: 1.25rem;
  justify-content: center;
}

.fieldwork-map-section .map-legend-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.fieldwork-map-section .map-legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.map-legend-dot--institution { background-color: #2563eb; }
.map-legend-dot--fieldwork   { background-color: #16a34a; }
.map-legend-dot--origin      { background-color: #dc2626; }
.map-legend-dot--workshop    { background-color: #d97706; }

/* Leaflet dark-mode adjustments */
[data-theme="dark"] .leaflet-tile-pane {
  filter: invert(1) hue-rotate(180deg) brightness(0.85) saturate(0.9);
}

[data-theme="dark"] .leaflet-container {
  background: #242424;
}

[data-theme="dark"] .leaflet-popup-content-wrapper,
[data-theme="dark"] .leaflet-popup-tip {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
}

/* ----------------------------------------------------------
   6. TEACHING / MENTORING SECTION
   ---------------------------------------------------------- */
.teaching-section {
  padding: 4rem 0;
  background-color: var(--bg-primary);
}

[data-theme="dark"] .teaching-section {
  background-color: var(--bg-primary);
}

.teaching-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.teaching-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1.6rem 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}

.teaching-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-color);
  border-radius: 4px 0 0 4px;
}

.teaching-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.teaching-card__role {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.teaching-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.3rem;
}

.teaching-card__meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.teaching-card p {
  font-size: 0.87rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* ----------------------------------------------------------
   7. FOOTER ENHANCEMENTS
   ---------------------------------------------------------- */
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1.25rem 2rem;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-back-top {
  color: var(--text-muted);
  font-size: 0.8rem;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-back-top:hover {
  color: var(--accent-color);
}

/* ----------------------------------------------------------
   8. HOMEPAGE SELECTED PUBLICATIONS — Dimensions badges
   ---------------------------------------------------------- */
.pub-card-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

.pub-card-actions a {
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--accent-color);
  transition: color 0.2s;
}

.pub-card-actions a:hover {
  color: var(--accent-hover);
}

/* ----------------------------------------------------------
   PROJECT DETAIL PAGES
   ---------------------------------------------------------- */
.project-detail {
  display: grid;
  gap: 1.5rem;
}

.project-detail__hero,
.project-detail__figure {
  margin: 0;
}

.project-detail__hero {
  overflow: hidden;
  border: 1px solid var(--academic-line);
  border-radius: 8px;
  background: var(--academic-surface);
  box-shadow: 0 14px 34px rgba(32, 42, 51, 0.07);
}

.project-detail__hero img {
  display: block;
  width: 100%;
  background: var(--academic-panel);
}

.project-detail__hero figcaption,
.project-detail__figure figcaption {
  margin: 0;
  padding: 0.8rem 1rem;
  color: var(--academic-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.project-detail__section {
  display: grid;
  gap: 1rem;
}

.project-detail__lead {
  max-width: 880px;
  margin: 0;
  color: var(--academic-muted);
  font-size: 1.04rem;
  line-height: 1.78;
}

.project-detail__card .project-detail__lead {
  max-width: none;
}

.project-detail__lead + .project-detail__lead {
  margin-top: 0.85rem;
}

.project-detail__card,
.project-detail__figure,
.project-detail__publication-card {
  border: 1px solid var(--academic-line);
  border-radius: 8px;
  background: var(--academic-surface);
  box-shadow: 0 12px 30px rgba(32, 42, 51, 0.05);
}

.project-detail__card {
  padding: 1.2rem;
}

.project-detail__publication-card h3,
.project-detail__section-heading h2 {
  color: var(--academic-ink);
  font-family: "Roboto Slab", Georgia, serif;
}

.project-detail__publication-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.project-detail__publication-card {
  display: flex;
  overflow: hidden;
  flex-direction: column;
}

.project-detail__publication-card figure {
  margin: 0;
  border-bottom: 1px solid var(--academic-line);
  background: var(--academic-panel);
}

.project-detail__publication-card figure img {
  display: block;
  width: 100%;
}

.project-detail__publication-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.15rem;
}

.project-detail__publication-card h3 {
  margin: 0 0 0.7rem;
  font-size: 1.12rem;
  line-height: 1.38;
}

.project-detail__publication-card p {
  margin: 0 0 0.45rem;
  color: var(--academic-muted);
  line-height: 1.58;
}

.project-detail__publication-card em {
  color: var(--academic-ink);
  font-style: normal;
  font-weight: 800;
}

.project-detail__section-heading h2 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.28;
}

.project-detail__figure {
  overflow: hidden;
}

.project-detail__figure img {
  display: block;
  width: 100%;
  background: var(--academic-panel);
}

@media (max-width: 820px) {
  .project-detail__publication-grid {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------------------------
   9. HERO SOCIAL ICON LINKS
   ---------------------------------------------------------- */
.academic-actions--icons {
  gap: 0.65rem;
}

.academic-actions--icons a {
  width: 44px;
  min-width: 44px;
  height: 44px;
  min-height: 44px !important;
  padding: 0 !important;
  border-radius: 50% !important;
  font-size: 1.18rem;
}

.academic-actions--icons a svg {
  width: 1.15em;
  height: 1.15em;
  margin: 0;
  vertical-align: middle;
}

.academic-actions--icons a:hover svg,
.academic-actions--icons a:focus svg {
  color: #ffffff;
}

/* ----------------------------------------------------------
   10. SITE-WIDE LAYOUT WIDTH
   Keep a consistent page frame across the site while preserving
   narrower text measures inside content-heavy sections.
   ---------------------------------------------------------- */
@media (min-width: 1200px) {
  #navbar.navbar .container-fluid,
  .navbar .container-fluid,
  .content,
  .container-fluid,
  .academic-home,
  body:not(.home-page) .content,
  .publication-page,
  .projects-page,
  .activities-page {
    max-width: 1380px;
  }

  .academic-home {
    padding-right: 1.75rem;
    padding-left: 1.75rem;
  }

  .academic-hero {
    grid-template-columns: minmax(0, 1.12fr) 380px;
    gap: 4rem;
  }

  .academic-hero__copy p:not(.academic-kicker) {
    max-width: 860px;
  }

  .academic-section {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 3rem;
  }

  body:not(.home-page) .content > h6,
  .page-intro h6,
  .activities-hero__content,
  .academic-narrative__body {
    max-width: 820px;
  }
}

/* ----------------------------------------------------------
   11. GLASS NAVBAR
   ---------------------------------------------------------- */
#navbar.navbar {
  min-height: 78px;
  padding: 0.7rem 0;
  border-bottom: 0 !important;
  background: rgba(20, 31, 42, 0.68) !important;
  backdrop-filter: blur(18px) saturate(170%);
  -webkit-backdrop-filter: blur(18px) saturate(170%);
  box-shadow: 0 18px 42px rgba(12, 20, 28, 0.16) !important;
}

#navbar.navbar::after {
  display: none;
}

#navbar.navbar .container-fluid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  column-gap: 1rem;
  min-height: 0;
  padding-right: 1.25rem !important;
  padding-left: 1.25rem !important;
}

#navbar .navbar-brand {
  display: none !important;
}

#navbar .navbar-toggler {
  grid-column: 1;
  justify-self: start;
  align-self: center;
  margin-left: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

#navbar .navbar-toggler:hover,
#navbar .navbar-toggler:focus {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.28);
}

#navbar .navbar-toggler-icon {
  filter: invert(1) grayscale(1) brightness(1.85);
}

#navbar .navbar-collapse {
  grid-column: 2;
  align-items: center;
  justify-content: center;
}

#navbar .navbar-nav {
  margin: 0;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
}

#navbar .navbar-nav .nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.45rem 0.92rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.82) !important;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0;
}

#navbar .navbar-nav .nav-link:hover,
#navbar .navbar-nav .nav-link:focus {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff !important;
  text-decoration: none;
}

#navbar .navbar-active .nav-link {
  border-color: rgba(255, 255, 255, 0.88);
  background: rgba(255, 248, 240, 0.96);
  color: #17212b !important;
  box-shadow: 0 10px 24px rgba(10, 18, 24, 0.14);
}

#navbar .navbar-active .nav-link::after {
  display: none !important;
}

#dark-mode-toggle {
  grid-column: 3;
  justify-self: end;
  width: 40px;
  height: 40px;
  margin-left: 0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

#dark-mode-toggle:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: rotate(16deg);
}

body {
  padding-top: 96px;
}

#progress,
.progress-container {
  top: 78px;
}

[data-theme="dark"] #navbar.navbar {
  background: rgba(10, 16, 23, 0.78) !important;
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.3) !important;
}

@media (max-width: 767.98px) {
  #navbar.navbar {
    min-height: 72px;
    padding: 0.5rem 0;
  }

  #navbar.navbar .container-fluid {
    grid-template-columns: auto 1fr auto;
    row-gap: 0.55rem;
  }

  #navbar .navbar-collapse {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100%;
    padding-top: 0.15rem;
    justify-content: flex-start;
  }

  #navbar .navbar-nav {
    align-items: stretch;
    gap: 0.35rem;
    padding: 0.65rem;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 18px;
    background: rgba(11, 19, 28, 0.68);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
  }

  #navbar .navbar-nav .nav-link {
    justify-content: flex-start;
    width: 100%;
    border-radius: 12px;
    padding: 0.62rem 0.9rem;
  }

  #dark-mode-toggle {
    width: 38px;
    height: 38px;
  }

  body {
    padding-top: 90px;
  }

  #progress,
  .progress-container {
    top: 72px;
  }
}