/* Theme variables */
:root {
  --bg-primary: #fff;
  --bg-secondary: #f5f5f5;
  --bg-card: #fff;
  --bg-card-img: #fff;
  --text-primary: #363636;
  --text-secondary: #555;
  --text-muted: #666;
  --text-caption: #444;
  --border-color: #dbdbdb;
  --shadow-sm: 0 1px 6px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
  --tab-active: hsl(155, 45%, 40%);
  --link-color: hsl(155, 45%, 35%);
  --accent: hsl(155, 50%, 42%);
  --accent-light: hsl(155, 50%, 95%);
  --placeholder-border: #dbdbdb;
  --placeholder-text: #aaa;
  --code-bg: #f5f5f5;
  --table-bg: #fff;
  --table-border: #dbdbdb;
  --table-hover: #eef4f1;
  --table-stripe: #f4f6f5;
  --table-text: #2d2d2d;
  --coming-soon-border: #dbdbdb;
  --coming-soon-text: #888;
  --footer-text: #888;
  --gradient-start: hsl(155, 50%, 42%);
  --gradient-end: hsl(200, 55%, 45%);
}

[data-theme="dark"] {
  --bg-primary: #09090b;
  --bg-secondary: #131316;
  --bg-card: #1c1c20;
  --bg-card-img: #141417;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --text-caption: #d4d4d8;
  --border-color: #2e2e33;
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.5);
  --tab-active: hsl(155, 50%, 60%);
  --link-color: hsl(155, 50%, 60%);
  --accent: hsl(155, 50%, 55%);
  --accent-light: hsl(155, 50%, 12%);
  --placeholder-border: #2e2e33;
  --placeholder-text: #52525b;
  --code-bg: #131316;
  --table-bg: #1c1c20;
  --table-border: #2e2e33;
  --table-hover: #26312c;
  --table-stripe: #232328;
  --table-text: #e4e4e7;
  --coming-soon-border: #2e2e33;
  --coming-soon-text: #71717a;
  --footer-text: #71717a;
  --gradient-start: hsl(155, 45%, 50%);
  --gradient-end: hsl(200, 50%, 55%);
}

body {
  font-family: 'Noto Sans', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.section {
  background-color: var(--bg-primary);
}

.has-background-light {
  background-color: var(--bg-secondary) !important;
}

.title, .subtitle {
  color: var(--text-primary) !important;
}

.content p, .content li {
  color: var(--text-secondary);
}

.content a {
  color: var(--link-color);
}

code {
  background-color: var(--code-bg);
  color: var(--text-primary);
}

/* Theme toggle button */
.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 100;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* EquiDexFlow branding */
.equidexflow {
  font-variant: small-caps;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.equidexflow-plain {
  font-variant: small-caps;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Footer links */
.footer .icon-link {
  font-size: 25px;
  color: var(--text-primary);
}

.link-block a {
  margin-top: 5px;
  margin-bottom: 5px;
}

/* Teaser */
.teaser .hero-body {
  padding-top: 0;
  padding-bottom: 3rem;
}

.teaser {
  font-family: 'Google Sans', sans-serif;
}

.teaser-image {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 1.5rem;
}

/* Teaser equivariance figure */
.teaser-equivariance {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  max-width: 750px;
  margin-left: auto;
  margin-right: auto;
}

.teaser-equivariance img {
  border-radius: 8px;
  background: var(--bg-card-img);
}

.teaser-equivariance .teaser-arrow {
  font-size: 1.6rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.teaser-equivariance .teaser-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-align: center;
  margin-top: 0.25rem;
}

.teaser-panel {
  text-align: center;
  flex: 0 0 auto;
}

.teaser-panel img {
  width: 140px;
  height: 140px;
  object-fit: contain;
}

.publication-title {
  font-family: 'Google Sans', sans-serif;
}

.title-logo {
  height: 0.92em;
  width: auto;
  vertical-align: -0.14em;
  margin-right: 0.32em;
}

.publication-authors {
  font-family: 'Google Sans', sans-serif;
}

.publication-venue {
  color: var(--text-secondary);
  width: fit-content;
  font-weight: bold;
}

.publication-authors a {
  color: var(--link-color) !important;
}

.has-text-info {
  color: var(--accent) !important;
}

.publication-authors a:hover {
  text-decoration: underline;
}

.author-block {
  display: inline-block;
}

/* Method cards */
.method-card {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 1.5rem 1rem;
  height: 100%;
  box-shadow: var(--shadow-md);
  border-top: 3px solid var(--accent);
}

.method-card .icon {
  margin-bottom: 0.75rem;
}

.method-card h4 {
  margin-bottom: 0.5rem !important;
}

.method-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Tables */
.table {
  background-color: var(--table-bg);
  color: var(--text-primary);
}

.table th {
  color: var(--text-primary) !important;
  border-color: var(--table-border) !important;
}

.table td {
  color: var(--table-text);
  border-color: var(--table-border) !important;
}

/* Let bold cells follow the row's text color instead of Bulma's fixed dark */
.table td strong,
.table th strong {
  color: inherit;
}

/* Zebra striping so rows are not flat white */
.table tbody tr:nth-child(even) {
  background-color: var(--table-stripe);
}

/* Override Bulma's hardcoded #fafafa hover (which is unreadable in dark mode) */
.table.is-hoverable tbody tr:hover {
  background-color: var(--table-hover) !important;
}
.table.is-hoverable tbody tr.is-highlight:hover {
  background-color: var(--accent-light) !important;
}

.table a {
  color: var(--link-color);
}

.table .is-best {
  font-weight: 700;
  color: var(--accent);
}

/* Highlighted row (our method): keep text readable on the accent tint */
.table tbody tr.is-highlight {
  background-color: var(--accent-light);
}
.table tbody tr.is-highlight td {
  color: var(--text-primary);
}
.table tbody tr.is-highlight td.is-best {
  color: var(--accent);
}

/* Gallery tabs */
.gallery-tabs ul {
  border-bottom: none;
}

.gallery-tabs li a {
  border-color: var(--border-color);
  color: var(--text-muted);
}

.gallery-tabs li.is-active a {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

/* Grasp gallery grid */
.grasp-grid {
  max-width: 1100px;
  margin: 0 auto;
}

.grasp-figure {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 0.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.grasp-figure:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.grasp-figure img {
  border-radius: 6px;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  width: 100%;
  background: var(--bg-card-img);
}

.grasp-figure figcaption {
  text-align: center;
  padding: 0.4rem 0 0.2rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-caption);
}

/* Equivariance strip */
.equiv-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.equiv-strip img {
  flex: 0 0 auto;
  height: 180px;
  object-fit: contain;
  border-radius: 6px;
  background: var(--bg-card-img);
}

.equiv-strip .equiv-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.equiv-strip .equiv-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-caption);
  text-align: center;
  margin-top: 0.3rem;
}

.equiv-panel {
  text-align: center;
}

/* Full equivariance gallery */
.equiv-gallery-img {
  width: 100%;
  max-width: 800px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  background: var(--bg-card-img);
}

/* Six-object equivariance gallery (Fig. 6 style: three object triples, wide strip) */
.equiv-sixtest-img {
  width: 100%;
  max-width: 1100px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  background: var(--bg-card-img);
  padding: 8px;
}

/* Compact hardware video layout: co-transformed 0/120 pairs + symmetric tiles */
.hw-pair-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 1rem auto 0.25rem;
  padding: 0 1rem;
}
.hw-pair-card {
  background: var(--bg-card);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  padding: 14px 14px 16px;
}
.hw-pair-name {
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 10px;
}
.hw-pair-sub {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.hw-pair-vids {
  display: flex;
  gap: 10px;
}
.hw-cell {
  flex: 1;
  text-align: center;
  position: relative;
}
.hw-vid {
  width: 100%;
  display: block;
  border-radius: 6px;
  background: var(--bg-card-img);
  cursor: zoom-in;
}
/* Always-visible zoom badge so first-time visitors notice the click-to-enlarge */
.hw-cell::after,
.zoom-badge {
  content: "\f00e";              /* fa-search-plus */
  font-family: "Font Awesome 5 Free", "FontAwesome";
  font-weight: 900;
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.85;
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.hw-cell:hover::after {
  opacity: 1;
  transform: scale(1.08);
  background: rgba(0, 0, 0, 0.75);
}
.hw-ort {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 5px;
}
/* Wrap zoomable still images (collages, equivariance strip) with a zoom badge too */
.zoom-wrap {
  position: relative;
  display: inline-block;
}
.zoom-wrap .zoom-badge {
  top: 10px;
  right: 10px;
}
/* Section-level hint so first-time visitors notice the zoom interaction */
.zoom-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-light);
  border-radius: 999px;
  padding: 4px 12px;
  margin: 0.6rem auto 0.2rem;
  width: auto;
}
.zoom-hint i {
  font-size: 0.85rem;
}
@media (max-width: 768px) {
  .hw-pair-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
  }
}

/* Click-to-enlarge lightbox */
.zoomable {
  cursor: zoom-in;
}
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.82);
  padding: 4vmin;
  cursor: zoom-out;
}
.lightbox-overlay.is-open {
  display: flex;
}
.lightbox-overlay video,
.lightbox-overlay img {
  max-width: 92vw;
  max-height: 88vh;
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  background: #fff;
}
.lightbox-close {
  position: absolute;
  top: 18px;
  right: 24px;
  font-size: 2.2rem;
  line-height: 1;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.85;
}
.lightbox-close:hover {
  opacity: 1;
}

/* Hardware figure */
.hardware-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
  max-width: 900px;
  margin: 0 auto;
}

.hardware-card {
  background: var(--bg-card);
  border-radius: 8px;
  padding: 0.5rem;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.hardware-card img {
  width: 100%;
  border-radius: 6px;
  object-fit: contain;
  background: var(--bg-card-img);
}

.hardware-card .hw-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-caption);
  padding: 0.3rem 0 0.1rem;
}

.hardware-phases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.hardware-phases img {
  width: 100%;
  border-radius: 4px;
  object-fit: contain;
  background: var(--bg-card-img);
}

/* Platform image */
.platform-image {
  max-width: 350px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  background: var(--bg-card-img);
}

/* Architecture figure */
.arch-figure {
  width: 100%;
  max-width: 900px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  background: var(--bg-card);
  padding: 1rem;
}

.arch-figure img {
  width: 100%;
  border-radius: 6px;
}

/* TTO figure */
.tto-figure {
  width: 100%;
  max-width: 340px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

/* Collage strip (for 2x8 gallery) */
.collage-2x8 {
  width: 100%;
  max-width: 1000px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  background: var(--bg-card-img);
  margin: 0 auto 1.5rem;
}

/* LEAP retarget grid */
.retarget-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  max-width: 960px;
  margin: 0 auto;
}

.retarget-card {
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 4px;
  border-radius: 8px;
  background: var(--bg-card-img);
  box-shadow: var(--shadow-sm);
  padding: 4px 4px 6px;
}

.retarget-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 4px;
  background: var(--bg-card-img);
}

.retarget-label {
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 600;
  line-height: 1.1;
}

/* Coming soon boxes */
.coming-soon-box {
  border: 2px dashed var(--coming-soon-border);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  color: var(--coming-soon-text);
}

.coming-soon-box p {
  max-width: 500px;
  margin: 0 auto;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Key results callout */
.key-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  max-width: 900px;
  margin: 1.5rem auto;
}

.key-result {
  background: var(--bg-card);
  border-radius: 10px;
  padding: 1.2rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border-left: 3px solid var(--accent);
}

.key-result .kr-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}

.key-result .kr-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
}

/* BibTeX */
#BibTeX pre {
  background-color: var(--code-bg);
  color: var(--text-primary);
}

/* Hero section */
.hero {
  background-color: var(--bg-primary);
}

.hero.teaser {
  background-color: var(--bg-primary);
}

/* Bulma overrides for dark mode */
[data-theme="dark"] .button.is-dark {
  background-color: #27272a;
  border-color: #3f3f46;
  color: #d4d4d8;
}

[data-theme="dark"] .button.is-dark:hover {
  background-color: #3f3f46;
}

[data-theme="dark"] .tabs.is-boxed a {
  background-color: var(--bg-secondary);
}

[data-theme="dark"] .tabs.is-boxed li.is-active a {
  background-color: var(--bg-card);
  border-bottom-color: var(--bg-card) !important;
}

/* Footer */
.footer {
  padding: 2rem 1.5rem;
  background-color: var(--bg-primary);
}

.footer .content p,
.footer .content a {
  color: var(--footer-text);
}

/* Responsive */
@media screen and (max-width: 768px) {
  .teaser-equivariance {
    flex-direction: column;
    gap: 0.5rem;
  }
  .teaser-panel img {
    width: 100px;
    height: 100px;
  }
  .equiv-strip {
    flex-direction: column;
  }
  .equiv-strip img {
    height: 120px;
  }
  .hardware-grid {
    grid-template-columns: 1fr;
  }
  .retarget-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .key-results {
    grid-template-columns: 1fr 1fr;
  }
}