:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --accent: #0ea5e9;
  --teal: #0f766e;
  --teal-soft: #ccfbf1;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-light: #94a3b8;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-accent: #f1f5f9;
  --border-color: #e2e8f0;
  --border-strong: #cbd5e1;
  --shadow-sm: 0 1px 2px 0 rgb(15 23 42 / 0.06);
  --shadow-md: 0 4px 12px -2px rgb(15 23 42 / 0.08);
  --shadow-lg: 0 14px 32px -8px rgb(15 23 42 / 0.16);
  --shadow-xl: 0 24px 48px -12px rgb(15 23 42 / 0.22);
  --radius: 12px;
  --radius-lg: 16px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-primary);
  line-height: 1.65;
  font-size: 16px;
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.title, .subtitle { font-family: 'Inter', sans-serif; color: var(--text-primary); }

/* ---------- Publication header ---------- */
.publication-header { padding-top: 2rem; }
.publication-header .hero-body { padding: 4.5rem 1.5rem 4rem; }

.publication-title {
  font-weight: 800 !important;
  font-size: clamp(2.2rem, 4.6vw, 3.4rem) !important;
  line-height: 1.1 !important;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem !important;
}

.layert2v {
  background: linear-gradient(135deg, #2563eb 0%, #0ea5e9 50%, #0f766e 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-variant-ligatures: none;
}

.publication-venue {
  margin: 0.5rem 0 1.75rem;
  color: var(--text-primary);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.publication-venue .venue-tag {
  color: var(--primary);
  font-weight: 800;
}

.publication-authors {
  margin: 0.5rem auto 1rem;
  max-width: 920px;
  line-height: 1.8;
  font-weight: 500;
}

.author-block {
  display: inline-block;
  margin: 0 0.35rem;
  white-space: nowrap;
}

.author-block sup { font-size: 0.65em; color: var(--text-secondary); }

.publication-authors a {
  color: var(--primary) !important;
  font-weight: 600;
  position: relative;
  transition: var(--transition);
}

.publication-authors a:hover { color: var(--primary-hover) !important; }
.publication-authors a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  transition: var(--transition);
}
.publication-authors a:hover::after { width: 100%; }

.publication-affiliations {
  max-width: 940px;
  margin: 0.4rem auto 0.6rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.affil-block {
  display: inline-block;
  margin: 0 0.55rem;
  white-space: nowrap;
}

.eql-cntrb {
  margin: 0.5rem 0 0;
  color: var(--text-light);
  font-size: 0.85rem;
  font-style: italic;
}

.publication-links { margin-top: 1.75rem; }
.publication-links .link-block { display: inline-block; }
.publication-links .link-block a { margin: 6px 5px; }

.button.is-dark {
  background: var(--text-primary) !important;
  border: none !important;
  color: #fff !important;
  border-radius: 999px !important;
  font-weight: 600 !important;
  padding: 0.5rem 1.15rem !important;
  letter-spacing: 0.01em;
  box-shadow: var(--shadow-sm);
  transition: var(--transition) !important;
}

.button.is-dark:hover {
  background: var(--primary) !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.button.is-dark:active { transform: translateY(0); }

/* ---------- Layer grid (Results rows) ---------- */
.layer-grid {
  display: grid;
  gap: 8px;
  width: 100%;
}

.layer-grid.four { grid-template-columns: repeat(4, 1fr); }

.layer-cell {
  margin: 0;
  background: #0b1220;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.layer-cell video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #0b1220;
}

.layer-cell figcaption {
  position: absolute;
  left: 7px;
  bottom: 7px;
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(6px);
  border-radius: 999px;
}

/* ---------- Sections ---------- */
.section { padding: 4.5rem 1.5rem; }
.section.hero.is-light,
.section.tinted { background: var(--bg-secondary); border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }

.title.is-3 {
  font-weight: 700 !important;
  font-size: 2rem !important;
  letter-spacing: -0.015em;
  margin-bottom: 1rem !important;
  padding-bottom: 1rem;
  position: relative;
}

.title.is-3::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 56px;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.section-lead {
  max-width: 760px;
  margin: 0 auto 2.5rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

.section-lead strong { color: var(--text-primary); }

.content.has-text-justified {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.content.has-text-justified p { margin-bottom: 1.25rem; }
.content.has-text-justified strong { color: var(--text-primary); font-weight: 600; }

/* ---------- Paper figure ---------- */
.paper-figure {
  margin: 1.5rem 0 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.paper-figure img { display: block; width: 100%; height: auto; }

.paper-figure figcaption {
  padding: 1rem 1.25rem 1.1rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

.paper-figure figcaption strong { color: var(--text-primary); }
.paper-figure + .paper-figure { margin-top: 1.5rem; }

/* ---------- Results carousel (one slide visible, navigate to switch) ---------- */
.results-carousel { overflow: hidden; padding: 1rem 0 3.5rem; }

.results-carousel .item {
  padding: 14px 18px;
  background: var(--bg-primary);
  transition: box-shadow 0.2s ease;
}

.results-carousel .item > .layer-grid {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 12px;
  background: var(--bg-primary);
  box-shadow: var(--shadow-md);
}

/* Carousel navigation chrome (bulma-carousel) */
.slider-navigation-previous,
.slider-navigation-next {
  background: var(--bg-primary) !important;
  border: 1px solid var(--border-color) !important;
  box-shadow: var(--shadow-md) !important;
  width: 44px !important;
  height: 44px !important;
  border-radius: 50% !important;
  color: var(--text-primary) !important;
  opacity: 0.95;
  transition: var(--transition);
}

.slider-navigation-previous:hover,
.slider-navigation-next:hover {
  background: var(--primary) !important;
  color: #fff !important;
  border-color: var(--primary) !important;
  transform: translateY(-50%) scale(1.05);
}

.slider-pagination {
  position: relative !important;
  top: auto !important;
  bottom: auto !important;
  margin-top: 2.25rem !important;
}

.slider-pagination .slider-page {
  background: var(--border-strong) !important;
  border-radius: 999px !important;
  width: 8px !important;
  height: 8px !important;
  transition: var(--transition);
}

.slider-pagination .slider-page.is-active {
  background: var(--primary) !important;
  width: 22px !important;
}

/* ---------- Comparison tables ---------- */
.result-tables {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 1.75rem;
}

.result-table-card {
  padding: 1.5rem 1.6rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.result-table-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }

.result-table-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.result-table-card p {
  margin: 0 0 1rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.metric-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.metric-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0;
  border-bottom: 1px dashed var(--border-color);
  font-size: 0.92rem;
}

.metric-list li:last-child { border-bottom: none; }

.metric-list span {
  color: var(--text-secondary);
  font-weight: 500;
}

.metric-list strong {
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  letter-spacing: -0.01em;
}

.metric-list em {
  color: var(--text-light);
  font-style: normal;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  margin-left: 0.5rem;
}

/* ---------- BibTeX ---------- */
.bibtex-card {
  position: relative;
  margin-top: 1.5rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid #1e293b;
}

.bibtex-card pre {
  margin: 0 !important;
  padding: 1.6rem 1.8rem !important;
  background: #0f172a !important;
  color: #e2e8f0 !important;
  font-family: 'JetBrains Mono', 'SF Mono', monospace !important;
  font-size: 0.9rem !important;
  line-height: 1.7;
  overflow-x: auto;
}

.bibtex-card code {
  background: transparent !important;
  color: inherit !important;
  padding: 0 !important;
  font-family: inherit !important;
}

.copy-bibtex-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  background: rgba(255, 255, 255, 0.1);
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.copy-bibtex-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.4);
}

.copy-bibtex-btn.copied {
  background: #10b981;
  border-color: #10b981;
  color: #fff;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 1.5rem;
  color: var(--text-secondary);
}

.footer .content { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.7; }
.footer a { color: var(--primary); transition: var(--transition); }
.footer a:hover { color: var(--primary-hover); }

/* ---------- Scroll to top ---------- */
.scroll-to-top {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--text-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-lg);
}

.scroll-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.scroll-to-top:hover { background: var(--primary); transform: translateY(-3px); }

/* ---------- Responsive ---------- */
@media screen and (max-width: 960px) {
  .layer-grid.four { grid-template-columns: repeat(2, 1fr); }
  .result-tables { grid-template-columns: 1fr; }
}

@media screen and (max-width: 640px) {
  .publication-header .hero-body { padding: 2.5rem 1rem 2rem; }
  .publication-title { font-size: 1.9rem !important; }
  .section { padding: 3rem 1rem; }
  .title.is-3 { font-size: 1.55rem !important; }
  .section-lead { font-size: 0.95rem; }
  .layer-grid { gap: 6px; }
  .result-row { padding: 8px; }
  .author-block { white-space: normal; }
  .affil-block { display: block; margin: 0.15rem 0; }
  .copy-bibtex-btn { top: 10px; right: 10px; padding: 0.4rem 0.7rem; font-size: 0.78rem; }
  .bibtex-card pre { font-size: 0.78rem !important; padding: 1.1rem !important; }
  .scroll-to-top { right: 1rem; bottom: 1rem; }
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero, .section { animation: fadeInUp 0.55s ease-out; }

/* Focus accessibility */
button:focus-visible, a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}