/* ===================== RESET & BASE ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a2e;
  background: #ffffff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
code { font-family: 'JetBrains Mono', monospace; font-size: 0.85em; }
mark { background: #fef3c7; padding: 0 3px; border-radius: 3px; }
s { text-decoration: line-through; opacity: 0.5; }

/* ===================== LAYOUT ===================== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 860px; }
.section { padding: 36px 0; }
.section-alt { background: #f8fafc; }
.section-title {
  font-size: 1.6rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.section-desc {
  text-align: center;
  color: #64748b;
  max-width: 700px;
  margin: 0 auto 20px;
  font-size: 1.05rem;
}

/* ===================== HERO ===================== */
.hero {
  position: relative;
  padding: 90px 0 64px;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  color: #fff;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 600px 400px at 20% 50%, rgba(59,130,246,0.15), transparent),
    radial-gradient(ellipse 500px 350px at 80% 30%, rgba(139,92,246,0.12), transparent),
    radial-gradient(ellipse 400px 300px at 50% 80%, rgba(16,185,129,0.08), transparent);
  pointer-events: none;
}
.venue-badge {
  display: inline-block;
  padding: 6px 20px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.8);
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
  background: rgba(255,255,255,0.05);
}
.hero-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #fff 0%, #93c5fd 50%, #c4b5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: clamp(1.3rem, 3.5vw, 2rem);
  color: rgba(255,255,255,0.85);
  font-weight: 600;
  margin-bottom: 24px;
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.authors {
  font-size: 1.05rem;
  margin-bottom: 6px;
}
.authors a {
  color: rgba(255,255,255,0.9);
  transition: color 0.2s;
}
.authors a:hover { color: #93c5fd; }
.authors sup { font-size: 0.7em; margin-left: 1px; color: rgba(255,255,255,0.5); }
.affiliations {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 24px;
}
.affiliations sup { font-size: 0.7em; }
.hero-links { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  border: 1px solid transparent;
}
.btn-primary {
  background: #3b82f6;
  color: #fff;
  border-color: #3b82f6;
}
.btn-primary:hover { background: #2563eb; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(59,130,246,0.3); }
.btn-secondary {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border-color: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
}
.btn-secondary:hover { background: rgba(255,255,255,0.15); transform: translateY(-1px); }
.btn-icon { font-size: 1.1em; }

/* ===================== ABSTRACT ===================== */
.abstract-text {
  font-size: 1.08rem;
  line-height: 1.85;
  color: #334155;
  text-align: justify;
}

/* ===================== HIGHLIGHTS ===================== */
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.highlight-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 24px 24px;
  transition: all 0.25s;
}
.highlight-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.06);
  border-color: #cbd5e1;
}
.highlight-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}
.highlight-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.highlight-card p {
  font-size: 0.93rem;
  color: #64748b;
  line-height: 1.6;
}

/* ===================== OVERVIEW FLOW ===================== */
.overview-flow {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.flow-step {
  flex: 1;
  min-width: 200px;
  max-width: 260px;
  text-align: center;
  padding: 28px 20px;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
}
.flow-number {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  margin: 0 auto 16px;
}
.flow-step h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.flow-step p {
  font-size: 0.85rem;
  color: #64748b;
  line-height: 1.5;
}
.flow-arrow {
  font-size: 1.8rem;
  color: #cbd5e1;
  align-self: center;
  font-weight: 300;
  margin-top: 20px;
}
@media (max-width: 900px) {
  .flow-arrow { display: none; }
  .overview-flow { gap: 16px; }
}

/* ===================== DOMAINS ===================== */
.domains-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 20px;
}
.domain-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 22px;
  transition: all 0.25s;
}
.domain-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}
.domain-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.domain-icon { font-size: 1.6rem; }
.domain-header h3 { font-size: 1.05rem; font-weight: 700; }
.api-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.api-list li {
  font-size: 0.82rem;
  padding: 8px 12px;
  background: #f1f5f9;
  border-radius: 8px;
  color: #475569;
  overflow-x: auto;
  white-space: nowrap;
}
.api-list code {
  color: #1e40af;
  font-weight: 500;
  font-size: 0.78rem;
}

/* ===================== RADAR CHART ===================== */
.radar-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
#radar-canvas {
  max-width: 680px;
  width: 100%;
  height: auto;
}
.radar-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
}
.radar-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid #e2e8f0;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}
.radar-legend-item:hover {
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.radar-legend-item.disabled {
  opacity: 0.35;
}
.radar-legend-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ===================== RESULTS TABLE ===================== */
.table-wrapper {
  overflow-x: auto;
  border-radius: 16px;
  border: 1px solid #e2e8f0;
  background: #fff;
}
.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.results-table thead { background: #f8fafc; }
.results-table th {
  padding: 14px 18px;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  border-bottom: 2px solid #e2e8f0;
  color: #475569;
  font-size: 0.85rem;
}
.results-table th:first-child { text-align: left; }
.group-header {
  font-size: 0.78rem !important;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #94a3b8 !important;
  border-bottom: 1px solid #e2e8f0 !important;
  padding-bottom: 8px !important;
}
.results-table td {
  padding: 14px 18px;
  text-align: center;
  border-bottom: 1px solid #f1f5f9;
  font-variant-numeric: tabular-nums;
}
.results-table tbody tr:hover { background: #f8fafc; }
.results-table tbody tr:last-child td { border-bottom: none; }
.model-name {
  text-align: left !important;
  font-weight: 600;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 10px;
}
.model-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--dot-color);
  display: inline-block;
  flex-shrink: 0;
}
td.best {
  font-weight: 700;
  color: #1e40af;
  position: relative;
}
td.best::after {
  content: '';
  position: absolute;
  inset: 6px 8px;
  background: rgba(59,130,246,0.06);
  border-radius: 6px;
  z-index: -1;
}

/* ===================== CHART TABS ===================== */
.chart-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 10px 22px;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  background: #fff;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: #64748b;
  cursor: pointer;
  transition: all 0.2s;
}
.tab-btn:hover { border-color: #94a3b8; color: #1a1a2e; }
.tab-btn.active {
  background: #1e293b;
  color: #fff;
  border-color: #1e293b;
}
.tab-content { display: none; }
.tab-content.active { display: block; }
.chart-desc {
  text-align: center;
  color: #64748b;
  margin-bottom: 24px;
  font-size: 0.95rem;
}

/* ===================== BAR CHARTS ===================== */
.bar-chart-container {
  overflow-x: auto;
  padding-bottom: 8px;
}
.bar-chart {
  min-width: 700px;
}
.chart-row {
  display: flex;
  align-items: center;
  margin-bottom: 6px;
}
.chart-label {
  width: 140px;
  flex-shrink: 0;
  font-size: 0.82rem;
  font-weight: 600;
  text-align: right;
  padding-right: 16px;
  color: #475569;
}
.chart-bars {
  flex: 1;
  display: flex;
  gap: 3px;
  align-items: center;
}
.chart-bar {
  height: 22px;
  border-radius: 4px;
  transition: all 0.4s ease;
  position: relative;
  min-width: 2px;
}
.chart-bar:hover {
  filter: brightness(1.1);
  transform: scaleY(1.15);
}
.chart-bar-label {
  position: absolute;
  right: -4px;
  top: 50%;
  transform: translate(100%, -50%);
  font-size: 0.72rem;
  font-weight: 600;
  color: #475569;
  padding-left: 6px;
  white-space: nowrap;
}
.chart-legend {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: #64748b;
}
.legend-dot {
  width: 10px; height: 10px;
  border-radius: 3px;
}
/* Category headers in charts */
.chart-category-header {
  font-size: 0.75rem;
  font-weight: 700;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 12px 0 6px 156px;
}
.chart-category-header:first-child { padding-top: 0; }

/* ===================== AUDIO DEMOS ===================== */
.demo-filters {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 20px;
  border: 1px solid #e2e8f0;
  border-radius: 100px;
  background: #fff;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  color: #64748b;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn:hover { border-color: #94a3b8; }
.filter-btn.active {
  background: #1e293b;
  color: #fff;
  border-color: #1e293b;
}
.demos-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.demo-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.25s;
}
.demo-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}
.demo-card-header {
  padding: 24px 28px 20px;
  border-bottom: 1px solid #f1f5f9;
}
.demo-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}
.demo-domain-badge {
  padding: 3px 12px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.demo-domain-badge[data-domain="travel"] { background: #dbeafe; color: #1e40af; }
.demo-domain-badge[data-domain="finance"] { background: #dcfce7; color: #166534; }
.demo-domain-badge[data-domain="housing"] { background: #fef3c7; color: #92400e; }
.demo-domain-badge[data-domain="ecommerce"] { background: #fce7f3; color: #9d174d; }
.demo-difficulty {
  font-size: 0.75rem;
  color: #94a3b8;
  font-weight: 500;
}
.demo-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.demo-transcript {
  font-size: 0.88rem;
  color: #64748b;
  font-style: italic;
  line-height: 1.5;
}
.demo-card-body {
  padding: 20px 28px 24px;
}
.demo-channel-hint {
  font-size: 0.78rem;
  color: #94a3b8;
  font-weight: 500;
  margin-bottom: 12px;
  padding: 6px 12px;
  background: #f8fafc;
  border-radius: 8px;
  border-left: 3px solid #3b82f6;
}
.demo-audio-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid #f8fafc;
}
.demo-audio-row:last-child { border-bottom: none; }
.demo-audio-label {
  width: 130px;
  flex-shrink: 0;
  font-size: 0.82rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}
.demo-audio-label .model-dot {
  width: 8px; height: 8px;
}
.demo-audio-row audio {
  flex: 1;
  height: 36px;
  max-width: 500px;
}
.demo-audio-row audio::-webkit-media-controls-panel {
  background: #f8fafc;
}
.demo-status {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 100px;
  font-weight: 600;
}
.demo-status.pass { background: #dcfce7; color: #166534; }
.demo-status.fail { background: #fee2e2; color: #991b1b; }

/* ===================== DISFLUENCY CARDS ===================== */
.disfluency-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}
.disfluency-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 22px;
}
.disfluency-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 700;
  background: #1e293b;
  color: #fff;
  margin-bottom: 14px;
}
.disfluency-example {
  font-size: 1rem;
  margin-bottom: 12px;
  line-height: 1.6;
  color: #1e293b;
}
.disfluency-desc {
  font-size: 0.85rem;
  color: #64748b;
  line-height: 1.5;
}

/* ===================== KEY FINDINGS ===================== */
.findings-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.finding {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.finding-number {
  width: 48px; height: 48px;
  flex-shrink: 0;
  background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  color: #475569;
}
.finding-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.finding-content p {
  font-size: 0.92rem;
  color: #64748b;
  line-height: 1.6;
}

/* ===================== CITATION ===================== */
.citation-block {
  position: relative;
  background: #1e293b;
  border-radius: 14px;
  padding: 28px 32px;
  overflow: hidden;
}
.citation-block pre {
  overflow-x: auto;
}
.citation-block code {
  color: #94a3b8;
  font-size: 0.82rem;
  line-height: 1.7;
  white-space: pre;
}
.copy-btn {
  position: absolute;
  top: 14px; right: 14px;
  padding: 6px 14px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  color: #94a3b8;
  font-family: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}
.copy-btn:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* ===================== FOOTER ===================== */
.footer {
  padding: 28px 0;
  text-align: center;
  color: #94a3b8;
  font-size: 0.85rem;
  border-top: 1px solid #f1f5f9;
}

/* ===================== FLOATING NAV ===================== */
.floating-nav {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  display: flex;
  gap: 4px;
  padding: 6px;
  background: rgba(15,23,42,0.92);
  backdrop-filter: blur(16px);
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.1);
  z-index: 100;
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.floating-nav.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.floating-nav a {
  padding: 8px 14px;
  font-size: 0.78rem;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
  border-radius: 10px;
  transition: all 0.2s;
  white-space: nowrap;
}
.floating-nav a:hover,
.floating-nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 768px) {
  .hero { padding: 64px 0 44px; }
  .section { padding: 28px 0; }
  .section-title { font-size: 1.6rem; }
  .highlights-grid { grid-template-columns: 1fr; }
  .domains-grid { grid-template-columns: 1fr; }
  .finding { flex-direction: column; gap: 12px; }
  .floating-nav { display: none; }
  .chart-label { width: 100px; font-size: 0.75rem; }
  .demo-audio-row { flex-wrap: wrap; }
  .demo-audio-label { width: 100%; }
  .disfluency-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-links { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 220px; justify-content: center; }
}

/* ===================== CITATION ===================== */
.bibtex-wrapper { position: relative; max-width: 900px; margin: 24px auto 0; }
.bibtex {
  background: #1e1e2e;
  color: #e6e6e6;
  padding: 1.5rem 1.75rem;
  border-radius: 10px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88rem;
  line-height: 1.6;
  border: 1px solid #2a2a3e;
}
.bibtex code { color: inherit; font-size: inherit; background: none; }
.bibtex-copy {
  position: absolute;
  top: 12px;
  right: 12px;
  background: #3a3a52;
  color: #e6e6e6;
  border: 1px solid #4a4a66;
  padding: 6px 14px;
  border-radius: 6px;
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}
.bibtex-copy:hover { background: #4a4a66; }
.bibtex-copy.copied { background: #4ade80; color: #0a0a0a; border-color: #4ade80; }