/* Modern CSS Variables for consistent theming */
:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --accent-color: #0ea5e9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --background-primary: #ffffff;
  --background-secondary: #f8fafc;
  --background-accent: #f1f5f9;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-subtle: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth scrolling for better UX */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  background-color: var(--background-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Centering fallback */
.container {
  margin-left: auto !important;
  margin-right: auto !important;
}

section {
  width: 100%;
}


/* Modern Button Styles */
.button {
  border-radius: var(--border-radius) !important;
  font-weight: 600 !important;
  transition: var(--transition) !important;
  border: 2px solid transparent !important;
  position: relative;
  overflow: hidden;
}

.button.is-dark {
  background: var(--text-primary) !important;
  border: none !important;
  color: white !important;
  box-shadow: var(--shadow-md);
}

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

.button.is-dark:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.footer .icon-link {
  font-size: 25px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer .icon-link:hover {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.link-block a {
  margin: 8px 4px;
}

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


/* Hero Section Modernization */
.hero {
  position: relative;
  overflow: hidden;
}

.hero.is-light {
  background: var(--background-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.hero-body {
  padding: 4rem 1.5rem;
}

.teaser .hero-body {
  padding-top: 2rem;
  padding-bottom: 4rem;
}

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


/* Publication Content Styling */
.publication-title {
  font-family: 'Inter', sans-serif !important;
  font-weight: 800 !important;
  color: var(--text-primary) !important;
  margin-bottom: 2rem !important;
  line-height: 1.1 !important;
}

.publication-banner {
  max-height: 70vh;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  margin: 2rem 0;
}

.publication-banner video {
  position: relative;
  left: auto;
  top: auto;
  transform: none;
  object-fit: cover;
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius-lg);
}

.publication-header .hero-body {
  padding: 6rem 1.5rem 4rem;
}

.publication-authors {
  font-family: 'Inter', sans-serif !important;
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.publication-venue {
  color: var(--text-secondary);
  width: fit-content;
  font-weight: 600;
  background: var(--background-accent);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  margin-top: 1rem;
  display: inline-block;
}

.publication-awards {
  color: #ef4444;
  width: fit-content;
  font-weight: 700;
  background: linear-gradient(135deg, #fef2f2, #fee2e2);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  border-left: 4px solid #ef4444;
  margin-top: 1rem;
}

.publication-authors a {
  color: var(--primary-color) !important;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
}

.publication-authors a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 0;
  background: var(--gradient-accent);
  transition: var(--transition);
}

.publication-authors a:hover::after {
  width: 100%;
}

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

.author-block {
  display: inline-block;
  margin-right: 0.5rem;
}

.publication-banner img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.publication-banner img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-xl);
}

/* Modern Video and Carousel Styling */
.publication-video {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
  border-radius: var(--border-radius-lg) !important;
  box-shadow: var(--shadow-xl);
  transition: var(--transition);
}

.publication-video:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.publication-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius-lg);
}

.publication-body img {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.publication-body img:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.results-carousel {
  overflow: hidden;
  padding: 1rem 0;
}

.results-carousel .item {
  margin: 1rem;
  overflow: hidden;
  padding: 1.5rem;
  font-size: 0;
  background: var(--background-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.results-carousel .item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.results-carousel .item img,
.results-carousel video {
  margin: 0;
  border-radius: var(--border-radius);
  width: 100%;
  height: auto;
}

.results-carousel .subtitle {
  font-size: 1rem !important;
  color: var(--text-secondary);
  margin-top: 1rem;
  font-weight: 500;
}

/* Pagination and Misc Improvements */
.slider-pagination .slider-page {
  background: var(--primary-color);
  border-radius: 50%;
  transition: var(--transition);
}

.slider-pagination .slider-page.is-active {
  background: var(--primary-hover);
  transform: scale(1.2);
}

.eql-cntrb {
  font-size: 0.875rem;
  color: var(--text-light);
  font-style: italic;
}

/* Section Titles */
.title.is-3 {
  font-family: 'Inter', sans-serif !important;
  font-weight: 700 !important;
  color: var(--text-primary);
  margin-bottom: 2rem !important;
  position: relative;
  padding-bottom: 1rem;
}

.title.is-3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

/* Content Improvements */
.content.has-text-justified {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.content.has-text-justified p {
  margin-bottom: 1.5rem;
}

/* Footer Improvements */
.footer {
  background: var(--background-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 1.5rem;
}

.footer .content {
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.footer a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* BibTeX Styling */
pre {
  background: var(--background-accent) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--border-radius) !important;
  padding: 1.5rem !important;
  font-size: 0.9rem !important;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

code {
  background: var(--background-accent) !important;
  color: var(--text-primary) !important;
  font-family: 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace !important;
}

/* BibTeX Section Improvements */
.bibtex-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.copy-bibtex-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.copy-bibtex-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.copy-bibtex-btn.copied .copy-text::after {
  content: "ied!";
}

/* Scroll to Top Button */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-lg);
}

.scroll-to-top:hover {
  background: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
}


/* More Works Dropdown */
.more-works-container {
  position: fixed;
  top: 2rem;
  right: 2rem;
  z-index: 1000;
}

.more-works-btn {
  background: var(--background-primary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Inter', sans-serif;
}

.more-works-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--background-secondary);
  border-color: var(--primary-color);
}

.more-works-btn .dropdown-arrow {
  transition: var(--transition);
  font-size: 0.8rem;
}

.more-works-btn.active .dropdown-arrow {
  transform: rotate(180deg);
}

.more-works-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  width: 400px;
  max-width: 90vw;
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  max-height: 70vh;
  overflow-y: auto;
}

.more-works-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.dropdown-header h4 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.close-btn:hover {
  background: var(--background-accent);
  color: var(--text-primary);
}

.works-list {
  padding: 1rem;
}

.work-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 1rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  margin-bottom: 0.5rem;
}

.work-item:hover {
  background: var(--background-accent);
  transform: translateX(4px);
}

.work-info h5 {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

.work-info p {
  margin: 0 0 0.5rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.work-venue {
  font-size: 0.8rem;
  color: var(--text-light);
  font-style: italic;
}

.work-item .fas {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
}


/* Mobile Responsive Improvements */
@media screen and (max-width: 768px) {
  .hero-body {
    padding: 2rem 1rem;
  }

  .publication-header .hero-body {
    padding: 3rem 1rem 2rem;
  }

  .publication-title {
    font-size: 2.5rem !important;
    line-height: 1.2 !important;
    margin-bottom: 1.5rem !important;
  }

  .publication-authors {
    font-size: 1rem !important;
  }

  .button {
    margin: 0.25rem !important;
    font-size: 0.875rem !important;
    padding: 0.75rem 1rem !important;
  }

  .more-works-container {
    bottom: 2rem;
    right: 1rem;
    top: auto;
  }

  .more-works-btn {
    padding: 0.6rem 1rem;
    font-size: 0.8rem;
  }

  .more-works-dropdown {
    width: calc(100vw - 2rem);
    right: -1rem;
    bottom: calc(100% + 0.5rem);
    top: auto;
  }

  .results-carousel .item {
    margin: 0.5rem;
    padding: 1rem;
  }

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

  .content.has-text-justified {
    font-size: 1rem;
  }
}

@media screen and (max-width: 480px) {
  .publication-title {
    font-size: 2rem !important;
  }

  .hero-body {
    padding: 1.5rem 0.75rem;
  }

  .more-works-container {
    position: fixed;
    bottom: 2rem;
    right: 1rem;
    z-index: 1000;
  }

  .more-works-btn {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }

  .more-works-dropdown {
    position: absolute;
    bottom: calc(100% + 0.5rem);
    right: 0;
    width: calc(100vw - 2rem);
    max-width: 90vw;
  }

  .link-block {
    display: block;
    margin-bottom: 0.5rem;
  }

  .button {
    width: 100%;
    justify-content: center;
  }
}

/* Tablet Responsive */
@media screen and (min-width: 769px) and (max-width: 1024px) {
  .hero-body {
    padding: 3rem 2rem;
  }

  .publication-header .hero-body {
    padding: 4rem 2rem 3rem;
  }
}

/* Animation for page load */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

.hero,
.section {
  animation: fadeInUp 0.6s ease-out;
}

/* Improved focus states for accessibility */
.button:focus,
.related-works-btn:focus,
a:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}


/* ===== Overview Gallery ===== */

.overview-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.overview-cell {
  display: flex;
  flex-direction: column;
  gap: 3px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--background-accent);
  border: 1px solid var(--border-color);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.overview-cell:hover {
  transform: scale(1.04);
  box-shadow: var(--shadow-lg);
  z-index: 2;
}

.overview-cell video {
  width: 100%;
  display: block;
  background: #0b0f19;
  object-fit: contain;
}

/* ===== Collapsible Results ===== */

.results-header-row {
  text-align: center;
  margin-bottom: 0.5rem;
}

.results-header-row .title {
  margin-bottom: 0.75rem !important;
}

.collapse-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.5rem;
  border: 1.5px solid var(--border-color);
  border-radius: 100px;
  background: var(--background-primary);
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 1rem;
}

.collapse-toggle:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background: rgba(37, 99, 235, 0.04);
}

.collapse-icon {
  font-size: 0.75rem;
  transition: transform 0.35s ease;
}

.collapse-toggle.expanded .collapse-icon {
  transform: rotate(180deg);
}

.results-collapsible {
  max-height: 8000px;
  overflow: hidden;
  transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.4s ease;
  opacity: 1;
}

.results-collapsible.collapsed {
  max-height: 0;
  opacity: 0;
  pointer-events: none;
}

/* ===== Results Section ===== */

.results-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  font-weight: 400;
}

/* Filter Tabs */
.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.filter-tab {
  padding: 0.55rem 1.4rem;
  border: 1.5px solid var(--border-color);
  border-radius: 100px;
  background: var(--background-primary);
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.filter-tab:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background: rgba(37, 99, 235, 0.04);
}

.filter-tab.active {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

/* Video Grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(480px, 1fr));
  gap: 1.75rem;
}

/* Video Card */
.video-card {
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.video-card.hidden {
  display: none;
}

.video-card-header {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 1rem 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
}

.badge-sim {
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary-color);
}

.badge-real {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
}

/* Video Pair (side by side) */
.video-pair {
  display: flex;
  gap: 4px;
  padding: 0.65rem 0.75rem;
}

.video-pair video {
  width: 50%;
  border-radius: var(--border-radius);
  background: #0b0f19;
  object-fit: contain;
}

/* Prompt Label */
.video-prompt {
  text-align: center;
  font-family: 'Inter', sans-serif;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-primary);
  padding: 0.6rem 1rem 1rem;
  font-style: italic;
  line-height: 1.5;
  border-top: 1px solid var(--border-color);
  margin: 0 0.75rem;
}

/* Fade animation for filter */
@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

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

.video-card.fade-in {
  animation: cardFadeIn 0.4s ease-out both;
}

/* Responsive */
@media screen and (max-width: 1024px) {
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  }

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

@media screen and (max-width: 768px) {
  .video-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .overview-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .filter-tabs {
    gap: 0.4rem;
  }

  .filter-tab {
    padding: 0.45rem 1rem;
    font-size: 0.8rem;
  }
}

/* Print styles */
@media print {
  .more-works-container {
    display: none;
  }

  .hero,
  .section {
    animation: none;
  }

  .button {
    background: transparent !important;
    color: var(--text-primary) !important;
    box-shadow: none !important;
  }
}

/* ==================== COVER PAGE ==================== */

#cover {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

/* Cover — video background grid */
.cover-video-grid {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 4px;
  z-index: 0;
}

.cover-video-grid video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.30;
  filter: blur(1px) saturate(1.2);
}

/* Cover — gradient overlay */
.cover-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg,
      rgba(0, 0, 0, 0.88) 0%,
      rgba(10, 15, 40, 0.78) 40%,
      rgba(20, 30, 80, 0.68) 100%);
  backdrop-filter: blur(2px);
}

/* Cover — content wrapper */
.cover-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: #fff;
  max-width: 800px;
  padding: 0 1.5rem;
}

/* Cover — title */
.cover-title {
  font-family: 'Inter', sans-serif;
  font-size: 5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 1rem;
  color: #fff;
  text-shadow: 0 2px 30px rgba(96, 165, 250, 0.25);
}

/* Cover — subtitle */
.cover-subtitle {
  font-size: 1.35rem;
  font-weight: 300;
  line-height: 1.55;
  opacity: 0.85;
  margin-bottom: 1.5rem;
}

.cover-highlight {
  background: linear-gradient(135deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* Cover — authors */
.cover-authors {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.2rem 1.2rem;
  margin-bottom: 0.75rem;
}

.cover-author {
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  opacity: 0.92;
}

.cover-author sup {
  font-size: 0.6em;
  margin-left: 1px;
  opacity: 0.7;
}

/* Cover — affiliation text */
.cover-affil-text {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.3rem 1.4rem;
  font-size: 0.88rem;
  opacity: 0.6;
  margin-bottom: 0.4rem;
}

.cover-affil-text sup {
  font-size: 0.65em;
  margin-right: 2px;
}

/* Cover — author notes */
.cover-author-notes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.3rem 0.6rem;
  font-size: 0.78rem;
  font-style: italic;
  opacity: 0.45;
  margin-bottom: 1.5rem;
}

/* Cover — tags */
.cover-tags {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.92rem;
  opacity: 0.55;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.cover-tag-dot {
  opacity: 0.4;
}

/* Cover — buttons */
.cover-buttons {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  justify-content: center;
}

.cover-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: 1.5px solid rgba(255, 255, 255, 0.25);
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
}

.cover-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  color: #fff;
}

.cover-btn--disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.cover-soon {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(255, 255, 255, 0.15);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  margin-left: 0.15rem;
}

/* Cover — affiliations */
.cover-affiliations {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 3.5rem;
  opacity: 0.8;
  flex-wrap: wrap;
}

.limx-logo {
  height: 24px;
  width: auto;
  color: white;
  /* Applies to fill="currentColor" */
}

.hkust-logo {
  height: 38px;
  width: auto;
  filter: brightness(0) invert(1);
  /* Ensure it is white if it wasn't already, though png name suggests it is */
}

.cover-affil-divider {
  width: 1px;
  height: 28px;
  background: rgba(255, 255, 255, 0.3);
}

/* Cover — scroll hint */
.cover-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255, 255, 255, 0.5);
  font-size: 1.5rem;
  cursor: pointer;
  animation: coverBounce 2s infinite;
  transition: color 0.3s ease;
}

.cover-scroll-hint:hover {
  color: rgba(255, 255, 255, 0.9);
}

@keyframes coverBounce {

  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  40% {
    transform: translateX(-50%) translateY(-12px);
  }

  60% {
    transform: translateX(-50%) translateY(-6px);
  }
}

/* Cover — entrance animation */
.cover-content {
  animation: coverFadeIn 1s ease-out;
}

@keyframes coverFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

/* Cover — responsive */
@media screen and (max-width: 768px) {
  .cover-title {
    font-size: 3rem;
  }

  .cover-subtitle {
    font-size: 1.05rem;
  }

  .cover-authors {
    gap: 0.15rem 0.8rem;
  }

  .cover-author {
    font-size: 0.9rem;
  }

  .cover-affil-text {
    font-size: 0.78rem;
    gap: 0.2rem 1rem;
  }

  .cover-author-notes {
    font-size: 0.7rem;
  }

  .cover-buttons {
    gap: 0.5rem;
  }

  .cover-btn {
    padding: 0.6rem 1.1rem;
    font-size: 0.85rem;
  }
}

@media screen and (max-width: 480px) {
  .cover-title {
    font-size: 2.4rem;
  }

  .cover-subtitle {
    font-size: 0.95rem;
  }

  .cover-btn {
    padding: 0.5rem 0.9rem;
    font-size: 0.8rem;
  }
}