/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --bg-table-row: #13131b;
  --bg-table-row-alt: #16161f;
  --bg-table-hover: #1e1e2a;

  --text-primary: #e8e8ed;
  --text-secondary: #9d9db0;
  --text-muted: #6b6b80;

  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);

  --border: #232330;
  --border-light: #2a2a3a;

  --provider-anthropic: #d97706;
  --provider-openai: #10b981;
  --provider-google: #3b82f6;
  --provider-moonshot: #a855f7;
  --provider-xai: #ef4444;
  --provider-zhipu: #06b6d4;
  --provider-deepseek: #ec4899;
  --provider-openrouter: #8b5cf6;

  --gold: #fbbf24;
  --silver: #94a3b8;
  --bronze: #d97706;

  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: var(--accent-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent);
}

code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85em;
  background: var(--bg-card);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: 64px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 18px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  padding: 4px 10px;
  border: 2px solid var(--accent);
  border-radius: 8px;
}

.logo-text {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-github {
  display: flex;
  align-items: center;
  opacity: 0.7;
  transition: opacity var(--transition);
}

.nav-github:hover {
  opacity: 1;
}

/* ===== Hero ===== */
.hero {
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-light);
  background: var(--accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 72px;
  font-weight: 800;
  letter-spacing: -3px;
  line-height: 1;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 20px;
}

.hero-description {
  max-width: 640px;
  margin: 0 auto 48px;
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-value {
  font-size: 36px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent-light);
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ===== Sections ===== */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 640px;
  margin-bottom: 40px;
  line-height: 1.7;
}

/* ===== Filters ===== */
.filters {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.filter-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.filter-buttons {
  display: flex;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px;
}

.filter-btn {
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 500;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 6px;
  transition: all var(--transition);
  font-family: inherit;
}

.filter-btn:hover {
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--accent);
  color: white;
}

.sort-select {
  font-family: inherit;
  font-size: 13px;
  padding: 8px 32px 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239d9db0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

.sort-select:focus {
  outline: none;
  border-color: var(--accent);
}

/* ===== Leaderboard Table ===== */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 16px;
}

.leaderboard-table thead {
  background: var(--bg-card);
  position: sticky;
  top: 0;
}

.leaderboard-table th {
  padding: 16px 20px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  user-select: none;
}

.leaderboard-table th.sortable {
  cursor: pointer;
  transition: color var(--transition);
}

.leaderboard-table th.sortable:hover {
  color: var(--text-primary);
}

.sort-arrow {
  font-size: 10px;
  opacity: 0.3;
  margin-left: 4px;
}

.sort-arrow.active-sort {
  opacity: 1;
  color: var(--accent-light);
}

.leaderboard-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.leaderboard-table tbody tr {
  transition: background var(--transition);
}

.leaderboard-table tbody tr:nth-child(even) {
  background: var(--bg-table-row-alt);
}

.leaderboard-table tbody tr:hover {
  background: var(--bg-table-hover);
}

.col-rank {
  width: 48px;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
}

.col-model {
  min-width: 200px;
}

.col-provider {
  min-width: 100px;
}

.col-metric {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
}

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
}

.rank-1 { background: rgba(251, 191, 36, 0.15); color: var(--gold); }
.rank-2 { background: rgba(148, 163, 184, 0.15); color: var(--silver); }
.rank-3 { background: rgba(217, 119, 6, 0.15); color: var(--bronze); }

.model-name {
  font-weight: 600;
}

.model-tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tag-agentic {
  background: rgba(168, 85, 247, 0.15);
  color: #a855f7;
}

.tag-v2 {
  background: rgba(107, 114, 128, 0.2);
  color: #9ca3af;
}

.provider-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
}

.provider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.metric-value {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
  font-size: 15px;
}

.coverage-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.coverage-fill {
  width: 60px;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.coverage-fill-inner {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* ===== Findings ===== */
.findings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.finding-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}

.finding-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.finding-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border-radius: 12px;
  color: var(--accent-light);
  margin-bottom: 16px;
}

.finding-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.finding-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Charts ===== */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.chart-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.chart-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.chart-container {
  position: relative;
  height: 320px;
}

/* ===== Analysis ===== */
.analysis-stack {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.analysis-card-full {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.analysis-card-full h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}

.dual-chart {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 16px;
}

.dual-chart-panel h4 {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.chart-container-lg {
  position: relative;
  height: 340px;
}

/* ===== Methodology ===== */
.methodology-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.method-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
}

.method-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: white;
  font-weight: 700;
  font-size: 16px;
  border-radius: 50%;
  margin-bottom: 16px;
}

.method-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
}

.method-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.metrics-explainer {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.metrics-explainer h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
}

.metrics-table-wrapper {
  overflow-x: auto;
}

.metrics-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.metrics-table th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.metrics-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.metrics-table tr:last-child td {
  border-bottom: none;
}

.metrics-table th.num,
.metrics-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ===== Data Details ===== */
.data-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.data-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.data-stat-value {
  font-size: 28px;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.data-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.data-prose {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 14px;
}

.data-subhead {
  margin-top: 20px;
}

@media (max-width: 900px) {
  .data-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .data-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== About ===== */
.about-content {
  max-width: 700px;
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about-links {
  display: flex;
  gap: 16px;
  margin-top: 28px;
}

.about-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-weight: 500;
  font-size: 14px;
  transition: all var(--transition);
}

.about-link:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent-light);
}

/* ===== Footer ===== */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .findings-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .methodology-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
  .dual-chart {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 48px;
  }
  .hero-stats {
    gap: 24px;
  }
  .stat-value {
    font-size: 28px;
  }
  .findings-grid {
    grid-template-columns: 1fr;
  }
  .methodology-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    gap: 16px;
  }
  .filters {
    flex-direction: column;
    align-items: flex-start;
  }
  .section-title {
    font-size: 28px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 36px;
    letter-spacing: -2px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .nav-links a:not(.nav-github) {
    display: none;
  }
  .about-links {
    flex-direction: column;
  }
}