:root {
  /* Color System - Easy to customize! */
  /* Main purple colors */
  --primary: #5E2B97;           /* Dark purple - change this for main color */
  --primary-light: #F2EAFB;     /* Light purple - change this for accents */

  /* Alternative color schemes (uncomment to use) */
  /* Blue theme:
  --primary: #2563EB;
  --primary-light: #DBEAFE;
  */
  /* Teal theme:
  --primary: #0D9488;
  --primary-light: #CCFBF1;
  */
  /* Orange theme:
  --primary: #EA580C;
  --primary-light: #FFEDD5;
  */

  /* Text colors */
  --text: #222222;
  --text-light: #666666;

  /* Background colors */
  --bg: #FFFFFF;
  --bg-alt: #F9FAFB;
  --border: #EAEAEA;

  /* Shadows */
  --shadow: 0 2px 12px rgba(0,0,0,0.05);
  --shadow-hover: 0 6px 20px rgba(0,0,0,0.1);

  /* Spacing System */
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 40px;
  --space-xxl: 60px;

  /* Typography */
  --text-base: 16px;
  --text-sm: 14px;
  --text-lg: 18px;

  --radius: 6px;
  --radius-lg: 12px;
  --transition: all 0.2s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  line-height: 1.6;
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.teaser-item{
  flex:1;
  text-align:center;
}

.caption-group{
  display:flex;
  justify-content:space-between;
  margin-top:-2px;
  align-items:center;
  padding:0 6vw;
  flex-wrap:wrap;
}

.caption{
  font-weight:600;
  color:var(--text);
  background:none !important;
  padding:0 !important;
}

/* Hero Pipeline Animation */
.hero-pipeline {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: var(--space-lg) 0;
  padding: var(--space-md);
}

.hero-pipeline-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation-fill-mode: forwards;
}

.hero-video-box {
  width: 360px;
  height: 270px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-video-box video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-method-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 180px;
  height: 120px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  border: 2px solid var(--primary);
}

.hero-method-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
}

.hero-method-subtitle {
  font-size: 11px;
  opacity: 0.9;
}

.hero-3d-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 360px;
  height: 270px;
  background: linear-gradient(135deg, #1a1a1a, #2d2d2d);
  color: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  border: 2px solid #4CAF50;
  font-size: 40px;
  overflow: hidden;
  position: relative;
}

.hero-3d-box model-viewer {
  border-radius: var(--radius);
}

.hero-label {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
}

.hero-arrow {
  font-size: 40px;
  color: var(--primary);
  font-weight: bold;
  opacity: 0;
  animation-fill-mode: forwards;
}

/* Fade-in animations - sequential from left to right */
@keyframes fadeInSlide {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in-1 {
  animation: fadeInSlide 0.6s ease-out 0.2s forwards;
}

.fade-in-2 {
  animation: fadeInSlide 0.6s ease-out 0.5s forwards;
}

.fade-in-3 {
  animation: fadeInSlide 0.6s ease-out 0.6s forwards;
}

.fade-in-4 {
  animation: fadeInSlide 0.6s ease-out 1.1s forwards;
}

.fade-in-5 {
  animation: fadeInSlide 0.6s ease-out 1.4s forwards;
}

.meta-line {
  font-weight: 500;
  color: var(--text);
  text-align: center;
  margin-top: var(--space-sm);
}

/* TL;DR Section in Hero */
.tldr-section {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: var(--primary-light);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary);
}

.tldr-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 var(--space-sm) 0;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-align: left;
}

.tldr-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  margin: 0;
  text-align: left;
}

.tldr-text strong {
  color: var(--primary);
  font-weight: 600;
}

.content-width {
  max-width: 1000px;
  margin: 0 auto;
}

section {
  padding: var(--space-md) 0;
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.5s ease-out;
}

section.visible {
  opacity: 1;
  transform: translateY(0);
}

h1 {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  text-align: center;
  margin-top: var(--space-lg);
  background: linear-gradient(90deg, var(--primary), #8E44AD);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: var(--space-xl);
  position: relative;
  text-align: center;
}

h2:after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), #8E44AD);
  border-radius: 3px;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: var(--space-xl) 0 var(--space-md);
  color: var(--primary);
  text-align: center;
}

p {
  margin-bottom: var(--space-md);
  font-size: var(--text-base);
  text-align: center;
}

/* Authors Section */
.authors-container {
  margin: var(--space-xl) 0;
  text-align: center;
}

.authors-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
  margin-bottom: 12px;
}

.author-block {
  font-size: 17px;
  line-height: 1.4;
}

.author-block a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.author-block a:hover {
  color: var(--primary);
}

/* Affiliations */
.affiliations {
  margin: var(--space-md) 0 var(--space-xl);
  text-align: center;
  font-size: 15px;
  color: var(--text-light);
}

.affiliation-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 20px;
  margin-bottom: 8px;
}

.equal-contrib {
  font-size: 14px;
  margin-top: 8px;
}

.conference {
  background-color: var(--primary-light);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 13px;
  display: inline-block;
  margin-bottom: var(--space-xl);
}

/* Links */
.links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
  font-size: var(--text-sm);
  transition: var(--transition);
}

.link-btn:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.link-btn.primary {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* Content Blocks */
.abstract-container {
  background-color: var(--primary-light);
  padding: var(--space-lg);
  border-radius: var(--radius);
  margin-bottom: var(--space-xl);
}

.abstract-container p {
  text-align: left;
  margin-bottom: var(--space-sm);
}

/* Overview Pipeline */
.overview-pipeline {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: var(--space-xl) 0;
  padding: var(--space-lg);
  background: linear-gradient(135deg, var(--bg-alt) 0%, var(--bg) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow-x: auto;
}

.overview-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.overview-video-box {
  width: 140px;
  height: 105px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--bg-alt);
}

.overview-video-box video,
.overview-video-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.overview-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 140px;
  height: 105px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 2px solid var(--border);
  gap: 4px;
}

.overview-stage1 {
  background: #5B7C99;
  border-color: #4A6378;
}

.overview-stage2 {
  background: #7B68A6;
  border-color: #635285;
}

.overview-stage3 {
  background: #9B7C94;
  border-color: #7D6376;
}

.overview-box-title {
  font-size: 11px;
  font-weight: 700;
  color: white;
  opacity: 0.9;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.overview-box-text {
  font-size: 13px;
  font-weight: 600;
  color: white;
  text-align: center;
  line-height: 1.3;
}

.overview-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  text-align: center;
}

.overview-arrow {
  font-size: 24px;
  color: var(--primary);
  font-weight: bold;
}

@media (max-width: 1024px) {
  .overview-pipeline {
    flex-direction: column;
  }

  .overview-arrow {
    transform: rotate(90deg);
  }

  .overview-video-box,
  .overview-box {
    width: 200px;
    height: 150px;
  }

  .overview-box-text {
    font-size: 15px;
  }
}

/* Method Container - Same style as Abstract */
.method-container {
  background-color: var(--primary-light);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
}

.method-container p {
  text-align: left;
  margin-bottom: var(--space-sm);
}

.method-container .method-block {
  margin-bottom: var(--space-md);
}

.method-container .method-block:last-child {
  margin-bottom: 0;
}

/* Media Elements */
.teaser {
  width: 100%;
  border-radius: var(--radius);
  margin: var(--space-xl) auto;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  display: block;
}

.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius);
  margin: var(--space-xl) auto;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Interactive Controls */
.controls-card {
  background-color: var(--primary-light);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  margin: var(--space-xl) auto;
  max-width: 600px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.controls-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary), #8E44AD);
}

.controls-title {
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-sm);
}

.control-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-sm);
  background: rgba(255,255,255,0.7);
  border-radius: var(--radius);
  transition: var(--transition);
}

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

.control-icon {
  width: 40px;
  height: 40px;
  background-color: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 8px;
}

.control-label {
  font-size: var(--text-sm);
  font-weight: 500;
  text-align: center;
}

/* Dataset Selector */
.dataset-selector {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin: var(--space-md) auto;
}

/* Remove margin from demo-selector when inside dataset-selector */
.dataset-selector .demo-selector {
  margin-top: 0;
  gap: 8px;
  margin-bottom: 0;
}

.dataset-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--space-sm);
}

.dataset-tab {
  padding: 8px 16px;
  border-radius: 20px;
  background-color: var(--bg);
  border: 1px solid var(--border);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: var(--transition);
}

.dataset-tab.active {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

.dataset-tab:hover:not(.active) {
  border-color: var(--primary);
}

.dataset-preview {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.dataset-preview-item {
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  aspect-ratio: 16/9;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: relative;
}

.dataset-preview-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.dataset-preview-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.dataset-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.dataset-name {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0,0,0,0.7);
  color: white;
  padding: 6px;
  font-size: 12px;
  text-align: center;
}

/* Table */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) auto;
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

th, td {
  padding: var(--space-sm);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: 600;
  background-color: var(--primary-light);
  color: var(--primary);
}

tr:hover {
  background-color: #FAFAFA;
}

.highlight {
  background-color: var(--primary-light);
  font-weight: 500;
}

/* Pipeline Results Table */
.pipeline-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) auto;
  box-shadow: var(--shadow);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.pipeline-table th,
.pipeline-table td {
  padding: var(--space-sm);
  text-align: center;
  border: 1px solid var(--border);
  vertical-align: middle;
}

.pipeline-table th {
  font-weight: 600;
  background-color: var(--primary-light);
  color: var(--primary);
  font-size: 14px;
}

.pipeline-table .row-label {
  font-weight: 700;
  background-color: var(--bg-alt);
  color: var(--primary);
  font-size: 16px;
  width: 60px;
}

.pipeline-table img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
  border-radius: var(--radius);
}

.pipeline-table tbody tr:hover {
  background-color: transparent;
}

/* Related Works / More From Authors Section */
.related-works {
  margin: var(--space-xxl) 0;
}

.work-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.work-tab {
  padding: 12px 24px;
  border-radius: var(--radius);
  background-color: var(--bg);
  border: 2px solid var(--border);
  cursor: pointer;
  font-size: var(--text-base);
  font-weight: 500;
  transition: var(--transition);
  color: var(--text);
}

.work-tab:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.work-tab.active {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}

.work-content {
  display: none;
  animation: fadeIn 0.3s ease-in;
}

.work-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.work-card {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  transition: var(--transition);
  box-shadow: var(--shadow);
}

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

.work-card h3 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  text-align: left;
}

.work-card p {
  text-align: left;
  color: var(--text-light);
  margin-bottom: var(--space-sm);
}

.work-card .work-links {
  display: flex;
  gap: 12px;
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

.work-card .work-link {
  padding: 8px 16px;
  background-color: var(--primary-light);
  color: var(--primary);
  text-decoration: none;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: var(--transition);
  border: 1px solid transparent;
}

.work-card .work-link:hover {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* Page Loader */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--primary-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 20px;
}

.loader-text {
  color: var(--primary);
  font-size: var(--text-lg);
  font-weight: 600;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Footer */
footer {
  padding: var(--space-xxl) 0;
  text-align: center;
  color: var(--text-light);
  font-size: var(--text-sm);
}

/* ==================== Utility Classes ==================== */

/* Text Utilities */
.underline-letter {
  text-decoration: underline;
}

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

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.font-semibold {
  font-weight: 600;
}

.font-medium {
  font-weight: 500;
}

/* Spacing Utilities */
.no-margin-top {
  margin-top: 0 !important;
}

.no-margin-bottom {
  margin-bottom: 0 !important;
}

.margin-top-sm {
  margin-top: var(--space-sm);
}

.margin-top-xl {
  margin-top: var(--space-xl);
}

.margin-bottom-sm {
  margin-bottom: var(--space-sm);
}

.margin-bottom-md {
  margin-bottom: var(--space-md);
}

/* TL;DR Box */
.tldr-box {
  margin: 0;
  font-weight: 500;
  color: var(--text);
  display: inline-block;
  background-color: var(--primary-light);
  padding: 8px 20px;
  border-radius: var(--radius);
}

/* Code Block */
.code-block {
  background-color: var(--primary-light);
  padding: var(--space-md);
  border-radius: var(--radius);
}

.code-block pre {
  overflow-x: auto;
  white-space: pre-wrap;
  margin: 0;
  font-size: var(--text-sm);
}

.flowchart {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin: var(--space-lg) 0;
}

.flow-node {
  padding: 12px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-alt);
  font-size: 0.95rem;
  text-align: center;
  min-width: 180px;
  box-shadow: var(--shadow);
}

.flow-arrow {
  font-size: 1.5rem;
  color: var(--text-light);
}

/* Simple Pipeline - Horizontal Text Boxes */
.simple-pipeline {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: var(--space-lg) 0;
  padding: var(--space-md);
  overflow-x: auto;
}

.simple-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 20px;
  background: white;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.simple-small {
  min-width: 140px;
}

.simple-large {
  min-width: 280px;
  padding: 0;
  align-items: stretch;
}

.simple-box i {
  font-size: 24px;
  color: var(--primary);
}

.simple-box small {
  font-size: 11px;
  color: var(--text-light);
}

.carla-icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.simple-box:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.simple-highlight {
  background: var(--primary-light);
  border-color: var(--primary);
}

.simple-success {
  background: #E8F5E9;
  border-color: #4CAF50;
}

.simple-success i {
  color: #4CAF50;
}

.simple-arrow {
  font-size: 24px;
  color: var(--primary);
  font-weight: bold;
}

/* Sample Text in First Box */
.box-title-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.box-sample {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  text-align: left;
  width: 100%;
}

.sample-item {
  padding: 3px 6px;
  background: var(--bg-alt);
  border-radius: 3px;
  line-height: 1.3;
}

.sample-item strong {
  color: var(--primary);
  font-weight: 600;
}

/* Large Box with Videos */
.box-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  background: var(--primary);
  color: white;
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.simple-success .box-title {
  background: #4CAF50;
}

.box-title i {
  font-size: 18px;
  color: white;
}

.box-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  padding: 12px;
}

.box-video-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-alt);
}

.box-video-item video,
.box-video-item img {
  width: 100%;
  height: 100px;
  object-fit: cover;
  display: block;
}

.box-video-label {
  position: absolute;
  top: 4px;
  left: 4px;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 3px 6px;
  font-size: 10px;
  font-weight: 600;
  border-radius: 3px;
  z-index: 1;
}

/* Data Comparison - Compact Boxes */
.data-comparison {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin: var(--space-lg) 0 var(--space-xl);
}

.data-box {
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: white;
  transition: var(--transition);
}

.data-box:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.data-box-header {
  background: var(--primary);
  color: white;
  padding: 12px;
  text-align: center;
  font-weight: 700;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-box-content {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mini-video {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-alt);
}

.mini-video video,
.mini-video img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  display: block;
}

.mini-label {
  position: absolute;
  top: 4px;
  left: 4px;
  background: rgba(0, 0, 0, 0.75);
  color: white;
  padding: 4px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 3px;
  z-index: 1;
}

/* Responsive */
@media (max-width: 1024px) {
  .simple-pipeline {
    flex-direction: column;
    align-items: center;
  }

  .simple-arrow {
    transform: rotate(90deg);
  }

  .simple-small,
  .simple-large {
    min-width: 280px;
    max-width: 400px;
    width: 100%;
  }

  .data-comparison {
    grid-template-columns: 1fr;
  }

  .mini-video video,
  .mini-video img {
    height: 150px;
  }

  .box-video-item video,
  .box-video-item img {
    height: 120px;
  }
}

.data-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.data-preview-grid video,
.data-preview-grid img {
  width: 100%;
  max-height: 200px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-top: var(--space-sm);
}

.data-preview-card {
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--bg-alt);
  box-shadow: var(--shadow);
}

.media-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.media-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.media-item span {
  font-size: 0.85rem;
  color: var(--text-light);
  text-align: center;
}

/* Inverted/Dark Section - Use this for sections with dark background */
.section-inverted {
  background-color: var(--primary);
  color: white;
  padding: var(--space-xxl) 0;
}

.section-inverted h2,
.section-inverted h3,
.section-inverted p {
  color: white;
}

.section-inverted h2:after {
  background: white;
}

.section-inverted .link-btn {
  background-color: white;
  color: var(--primary);
  border-color: white;
}

.section-inverted .link-btn:hover {
  background-color: var(--primary-light);
  border-color: var(--primary-light);
}

/* Light Background Section */
.section-light {
  background-color: var(--bg-alt);
  padding: var(--space-xxl) 0;
}

/* Accent Background Section */
.section-accent {
  background-color: var(--primary-light);
  padding: var(--space-xxl) 0;
}

/* Table Utilities */
.table-center td,
.table-center th {
  text-align: center;
}

.table-header-center th {
  text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --space-xxl: 48px;
    --space-xl: 28px;
  }

  .container {
    padding: 0 var(--space-md);
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .comparison-viewer {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .authors-row {
    gap: 8px 16px;
  }

  .controls-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-pipeline {
    flex-direction: column;
    gap: 12px;
  }

  .hero-arrow {
    transform: rotate(90deg);
  }

  .hero-video-box,
  .hero-method-box,
  .hero-3d-box {
    width: 150px;
    height: 110px;
  }

  .hero-method-title {
    font-size: 24px;
  }

  .hero-3d-box {
    font-size: 50px;
  }
}

.comparison-item iframe,
.single-viewer iframe {
  width: 100%;
  height: 100%;
  border: none;
}

#ourViewerContainer,
#baselineViewerContainer {
  width: 100%;
  height: 450px;
}

/* Floating animation */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

.floating {
  animation: float 3s ease-in-out infinite;
}

.inline-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px dashed var(--primary);
  transition: var(--transition);
}

.inline-link:hover {
  color: var(--primary);
  border-bottom-style: solid;
}

/* Demo Selector */
.demo-selector {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin: var(--space-md) auto;
}

.demo-thumb {
  flex: 0 0 auto;
  width: 200px;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.demo-thumb:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.demo-thumb.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.demo-thumb img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.demo-thumb-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0,0,0,0.7);
  color: white;
  padding: 6px;
  font-size: var(--text-sm);
  text-align: center;
}

.demo-thumb video {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  display: block;
}

.video-thumbnail {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
}

.video-thumbnail video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-placeholder {
  width: 100%;
  height: 100%;
  background-color: #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
}

.loading-indicator {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.loading-spinner {
  width: 30px;
  height: 30px;
  border: 3px solid rgba(94, 43, 151, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.demo-info {
  margin-top: var(--space-sm);
  text-align: center;
  font-size: 14px;
  color: var(--text-light);
}

/* Viewer Container */
.viewer-container {
  width: 100%;
  border-radius: var(--radius);
  margin: var(--space-md) auto;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.viewer-container:hover {
  box-shadow: var(--shadow-hover);
}

.single-viewer {
  height: 700px;
}

.loading-frame {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--bg);
  color: var(--text);
  z-index: 5;
}

.loading-frame .loading-spinner {
  margin-bottom: 16px;
  width: 40px;
  height: 40px;
}

.iframe-container {
  width: 100%;
  height: 100%;
  position: relative;
}

/* Video teaser container */
.video-teaser-container {
  border-radius: var(--radius);
  overflow: hidden;
  margin: var(--space-md) auto var(--space-xl);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.image-table th, .image-table td {
  padding: 8px;
  vertical-align: middle;
  text-align: center;
}

.image-table td:first-child {
  font-weight: 600;
  width: 80px;
}

.image-table img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* ==================== Dataset Gallery ==================== */

/* Gallery Town Tabs */
.gallery-town-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: var(--space-md);
}

.gallery-town-tab {
  padding: 8px 16px;
  border: 2px solid var(--border);
  border-radius: 20px;
  background: var(--bg);
  color: var(--text);
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.gallery-town-tab:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.gallery-town-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(94, 43, 151, 0.3);
}

/* Gallery Container */
.gallery-container {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
  align-items: center;
}

/* Camera Tabs (Left sidebar) */
.gallery-camera-tabs {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 140px;
  flex-shrink: 0;
  align-self: center;
}

.gallery-camera-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  font-weight: 500;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: left;
}

.gallery-camera-tab i {
  font-size: 14px;
  width: 18px;
  text-align: center;
  color: var(--primary);
}

.gallery-camera-tab:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.gallery-camera-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.gallery-camera-tab.active i {
  color: white;
}

/* Gallery Content Area - 3 columns x 2 rows */
.gallery-content {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(2, auto);
  gap: var(--space-sm);
}

/* Comparison Slider Card */
.comparison-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

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

.comparison-card-header {
  background: var(--primary-light);
  padding: 6px 12px;
  font-weight: 600;
  font-size: 11px;
  color: var(--primary);
  text-align: center;
}

.comparison-slider-wrap {
  position: relative;
  aspect-ratio: 16/9;
  cursor: ew-resize;
  overflow: hidden;
}

.comparison-slider-wrap img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}

.comparison-slider-wrap .img-dynamic {
  clip-path: inset(0 50% 0 0);
  z-index: 2;
}

.comparison-slider-wrap .img-static {
  z-index: 1;
}

.slider-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: white;
  transform: translateX(-50%);
  z-index: 10;
  box-shadow: 0 0 6px rgba(0,0,0,0.5);
  pointer-events: none;
}

.slider-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 28px;
  height: 28px;
  background: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  z-index: 11;
  font-size: 10px;
  color: var(--primary);
  pointer-events: none;
}

.comparison-label {
  position: absolute;
  bottom: 6px;
  padding: 3px 8px;
  background: rgba(0,0,0,0.75);
  color: white;
  font-size: 9px;
  font-weight: 600;
  border-radius: 3px;
  z-index: 5;
  pointer-events: none;
}

.comparison-label.left { left: 6px; }
.comparison-label.right { right: 6px; }

.comparison-label.left::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #ef4444;
  border-radius: 50%;
  margin-right: 4px;
}

.comparison-label.right::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #22c55e;
  border-radius: 50%;
  margin-right: 4px;
}

/* Gallery Responsive */
@media (max-width: 1000px) {
  .gallery-content {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(3, auto);
  }
}

@media (max-width: 768px) {
  .gallery-container {
    flex-direction: column;
  }

  .gallery-camera-tabs {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    min-width: auto;
  }

  .gallery-camera-tab {
    padding: 6px 10px;
    font-size: 11px;
  }

  .gallery-camera-tab span {
    display: none;
  }

  .gallery-camera-tab i {
    margin: 0;
  }

  .gallery-content {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-town-tab {
    padding: 6px 12px;
    font-size: 11px;
  }
}

/* ==================== Auto-Scrolling Wall ==================== */
.scroll-wall {
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: var(--space-sm) 0;
}

.scroll-row {
  display: flex;
  gap: 6px;
  animation: scrollLeft 40s linear infinite;
  position: relative;
  z-index: 1;
}

.scroll-row:nth-child(even) {
  animation: scrollRight 40s linear infinite;
}

.scroll-row:hover {
  animation-play-state: paused;
  z-index: 100;
}

.scroll-row-item {
  flex-shrink: 0;
  width: 220px;
  height: 124px;
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow);
  position: relative;
}

.scroll-row-item:hover {
  transform: scale(1.4);
  z-index: 10;
  box-shadow: var(--shadow-hover);
}

.scroll-row-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.scroll-row-item .scroll-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: white;
  padding: 20px 8px 6px;
  font-size: 10px;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.3s;
}

.scroll-row-item:hover .scroll-label {
  opacity: 1;
}

@keyframes scrollLeft {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes scrollRight {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}