/* ============================================
   Base & Typography
   ============================================ */
body {
  font-family: 'Noto Sans', sans-serif;
  padding-top: 56px;
}

.dnerf {
  font-variant: small-caps;
}

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

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

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

.publication-venue {
  color: #555;
  width: fit-content;
  font-weight: bold;
}

.publication-awards {
  color: #ff3860;
  width: fit-content;
  font-weight: bolder;
}

.publication-authors a {
  color: hsl(204, 86%, 53%) !important;
}

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

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

.publication-video {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
  border-radius: 10px !important;
}

.publication-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.results-carousel {
  overflow: hidden;
}

.results-carousel .item {
  margin: 5px;
  overflow: hidden;
  padding: 20px;
  font-size: 0;
}

.results-carousel video {
  margin: 0;
}

.slider-pagination .slider-page {
  background: #000000;
}

.eql-cntrb {
  font-size: smaller;
}

.footer .icon-link {
  font-size: 25px;
  color: #000;
}

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

/* Smooth scroll, but respect users who prefer reduced motion */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

/* ============================================
   Layout helpers
   ============================================ */
.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 20px;
}

img,
video {
  max-width: 100%;
  height: auto;
}

/* Keep section headings clear of the sticky nav when jumping to anchors */
section[id],
div[id] {
  scroll-margin-top: 70px;
}

/* ============================================
   Sticky site navigation
   ============================================ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  z-index: 40;
  display: flex;
  align-items: center;
}

.site-nav__inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-nav__brand {
  font-family: 'Google Sans', sans-serif;
  font-weight: 700;
  color: #363636;
  text-decoration: none;
  letter-spacing: 0.02em;
  font-size: 0.95rem;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.site-nav__brand:hover {
  color: #667eea;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-nav__links::-webkit-scrollbar {
  display: none;
}

.site-nav__links a {
  display: inline-block;
  padding: 6px 12px;
  color: #4a4a4a;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 8px;
  transition: background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.site-nav__links a:hover,
.site-nav__links a:focus-visible {
  background: rgba(102, 126, 234, 0.1);
  color: #667eea;
  outline: none;
}

/* ============================================
   Hero / Title section
   ============================================ */
.hero-gradient {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.hero-gradient .hero-body {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.kicker {
  display: inline-block;
  padding: 4px 14px;
  margin-bottom: 0.75rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #5563d6;
  background: rgba(102, 126, 234, 0.12);
  border-radius: 999px;
  font-weight: 600;
}

.affiliations {
  display: block;
  margin-top: 1rem;
}

.author-notes {
  display: block;
  margin-top: 0.75rem;
  color: #6b7280;
  line-height: 1.6;
}

.author-notes small {
  font-size: 0.85em;
}

/* ============================================
   Conference badge & buttons
   ============================================ */
.conference-badge {
  display: inline-block;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 1rem;
  font-weight: 600;
  margin: 1rem 0 1.5rem 0;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease, color 0.3s ease;
  text-decoration: none;
}

.conference-badge:hover,
.conference-badge:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
  color: white;
  outline: none;
}

.external-link.button {
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.external-link.button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
  border-color: #667eea;
}

.external-link.button.is-disabled,
.external-link.button[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* ============================================
   Highlights cards
   ============================================ */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.highlight-card {
  background: white;
  padding: 2rem 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.highlight-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.highlight-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #667eea;
}

.highlight-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #363636;
  margin-bottom: 0.8rem;
}

.highlight-desc {
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  text-align: center;
}

/* ============================================
   Section titles & background rhythm
   ============================================ */
.section-title {
  position: relative;
  text-align: center;
}

.section-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
  margin: 1rem auto 1.5rem;
  border-radius: 2px;
}

.section-accent {
  background: linear-gradient(180deg, #f5f3ff 0%, #ffffff 100%);
}

/* ============================================
   Abstract block
   ============================================ */
.abstract-content {
  background: #f8f9fa;
  padding: 2rem;
  border-radius: 10px;
  border-left: 4px solid #667eea;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.abstract-content p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #4a4a4a;
}

/* ============================================
   Image & Video containers
   ============================================ */
.image-container {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  margin: 0 auto 1.5rem;
  text-align: center;
  max-width: 1100px;
}

.image-container img {
  border-radius: 8px;
  max-width: 100%;
  width: 100%;
  height: auto;
}

.image-caption {
  color: #666;
  font-size: 0.95rem;
  line-height: 1.6;
  text-align: left;
  margin: 0 auto;
  max-width: 1100px;
  padding: 0 1rem;
}

.video-wrapper {
  max-width: 960px;
  margin: 0 auto;
}

.video-wrapper video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  background: #000;
}

/* ============================================
   BibTeX block with copy button
   ============================================ */
.bibtex-wrapper {
  position: relative;
}

.bibtex-wrapper pre {
  padding-right: 110px;
}

.copy-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 6px 12px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: white;
  color: #4a4a4a;
  font-size: 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
  font-family: inherit;
}

.copy-btn:hover,
.copy-btn:focus-visible {
  border-color: #667eea;
  color: #667eea;
  outline: none;
}

.copy-btn.is-copied {
  background: #667eea;
  border-color: #667eea;
  color: white;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background-color: #f5f7fa;
  padding: 2rem 1.5rem;
  margin-top: 3rem;
  border-top: 1px solid #e0e0e0;
}

.footer p {
  margin-bottom: 0.5rem;
  color: #4a4a4a;
}

.footer a {
  color: #667eea;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: #764ba2;
  text-decoration: underline;
}

/* ============================================
   Floating back-to-top button
   ============================================ */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: #667eea;
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
  transition: opacity 0.25s ease, transform 0.25s ease, background 0.2s ease;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background: #5563d6;
  outline: none;
}

/* ============================================
   Fade-in animation
   ============================================ */
.fade-in {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.not-visible {
  opacity: 0;
  transform: translateY(20px);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in,
  .fade-in.not-visible,
  .fade-in.visible,
  .highlight-card,
  .conference-badge,
  .external-link.button,
  .back-to-top {
    transition: none !important;
    transform: none !important;
  }
}

/* ============================================
   Responsive
   ============================================ */
@media screen and (min-width: 769px) {
  .container {
    max-width: 1200px;
  }

  .publication-title {
    font-size: 2rem;
  }
}

@media screen and (max-width: 768px) {
  body {
    padding-top: 52px;
  }

  .site-nav {
    height: 52px;
  }

  .site-nav__brand {
    font-size: 0.85rem;
  }

  .site-nav__links a {
    padding: 6px 10px;
    font-size: 0.85rem;
  }

  .hero-gradient .hero-body {
    padding-top: 2.5rem;
    padding-bottom: 2.5rem;
  }

  .publication-title {
    font-size: 1.5rem !important;
    line-height: 1.4;
  }

  .publication-authors {
    font-size: 0.9rem !important;
  }

  .author-block {
    display: inline-block;
    margin-bottom: 5px;
  }

  pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 14px;
  }

  .hero-body {
    padding: 2rem 1rem;
  }

  .highlights-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .conference-badge {
    font-size: 0.9rem;
    padding: 6px 16px;
  }

  .abstract-content {
    padding: 1.5rem;
  }

  .abstract-content p {
    font-size: 1rem;
  }

  .image-container {
    padding: 1rem;
  }

  .image-caption {
    font-size: 0.9rem;
  }

  .bibtex-wrapper pre {
    padding-right: 1rem;
    padding-top: 3rem;
  }

  .copy-btn {
    top: 0.5rem;
    right: 0.5rem;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
  }
}