/* 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;
}

/* 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);
}

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

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

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

.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;
}

.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;
}

/* 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;
}

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

@media screen and (max-width: 480px) {
  .publication-title {
    font-size: 2rem !important;
  }
  
  .hero-body {
    padding: 1.5rem 0.75rem;
  }
  
  .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;
  }
}

/* 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;
}

/* Print styles */
@media print {
  
  .hero, .section {
    animation: none;
  }
  
  .button {
    background: transparent !important;
    color: var(--text-primary) !important;
    box-shadow: none !important;
  }
}

/* ---- tau-Emotion-Bench additions ---- */
.paper-figure {
  margin: 0 auto 1.5rem;
  text-align: center;
}

.paper-figure img {
  width: 100%;
  height: auto;
  background: #fff;
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: 12px;
  padding: 0.75rem;
}

.paper-figure figcaption {
  margin-top: 0.75rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary, #64748b);
  text-align: left;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 2rem 0 0;
}

.stat-tile {
  background: #fff;
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: 12px;
  padding: 1.25rem 0.75rem;
  text-align: center;
}

.stat-tile .stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--primary-color);
}

.stat-tile .stat-label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary, #64748b);
}

.section-lead {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary, #64748b);
  margin-bottom: 1.5rem;
}

.finding-block {
  margin-bottom: 3rem;
}

.finding-block h3 {
  margin-bottom: 0.75rem;
}

.table-wrap {
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: 12px;
}

.results-table {
  width: 100%;
  font-size: 0.82rem;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.results-table th,
.results-table td {
  padding: 0.5rem 0.4rem;
  text-align: right;
  border-bottom: 1px solid var(--border-color, #e2e8f0);
}

.results-table th:first-child,
.results-table td:first-child {
  text-align: left;
}

.results-table thead th {
  font-weight: 700;
  border-bottom-width: 2px;
}

.results-table tr.group-row td {
  text-align: center;
  font-style: italic;
  font-weight: 600;
  background: #f8fafc;
}

.results-table tr.ours td {
  font-weight: 700;
  background: #eff6ff;
}

.results-table td.avg,
.results-table th.avg {
  border-left: 2px solid var(--border-color, #e2e8f0);
  font-weight: 700;
}

.table-note {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-secondary, #64748b);
}

.button.is-static-soon {
  opacity: 0.6;
  cursor: default;
  pointer-events: none;
}

.emotion-chip {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  margin: 0 0.15rem 0.3rem 0;
}

.results-table th:first-child,
.results-table td:first-child {
  padding-left: 0.9rem;
}

.results-table th:last-child,
.results-table td:last-child {
  padding-right: 0.9rem;
}

.ood-table thead th[colspan] {
  text-align: center;
}

.ood-table td.pair,
.ood-table thead tr:last-child th:nth-child(odd) {
  border-left: 1px solid var(--border-color, #e2e8f0);
}

.section-lead code {
  font-size: 0.9em;
  background: #eef2f7;
  color: inherit;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.publication-logo {
  display: inline-block;
  width: 1.15em;
  height: 1.15em;
  margin-right: 0.3em;
  vertical-align: -0.22em;
}