: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-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

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

.button {
  border-radius: var(--border-radius) !important;
  font-weight: 600 !important;
  transition: var(--transition) !important;
}

.button.is-dark {
  background: var(--text-primary) !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;
}

.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; }

.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; }

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

.publication-video {
  position: relative;
  width: 100%;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.publication-video video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--border-radius-lg);
}

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

/* Results table */
.badge {
  display: inline-block;
  padding: 0.15rem 0.4rem;
  border-radius: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  vertical-align: middle;
  margin-left: .4rem;
}
.b-blue { background: #e8f0fe; color: #1a56db; }
.b-green { background: #e8f5e9; color: #1b5e20; }
.b-gray { background: #eeeeee; color: #424242; }
.runner-up { text-decoration: underline; text-underline-offset: 2px; }

/* BibTeX */
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;
}

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

.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; }

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

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

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

/* Scroll to top */
.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);
}

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

/* Animation */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* Responsive */
@media screen and (max-width: 768px) {
  .hero-body { padding: 2rem 1rem; }
  .publication-title { font-size: 2rem !important; line-height: 1.2 !important; }
  .publication-authors { font-size: 1rem !important; }
  .button { margin: 0.25rem !important; }
  .content.has-text-justified { font-size: 1rem; }
}