:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --success: #3fb950;
  --warning: #d29922;
  --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  --radius: 8px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

header {
  background: linear-gradient(135deg, #1a1f35 0%, #0d1117 100%);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
  text-align: center;
}

.header-content h1 {
  font-size: 2.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), #a371f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.3rem;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.last-updated {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

h2 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

/* Benchmark info cards */
.benchmark-info {
  margin-bottom: 2.5rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  transition: border-color 0.2s;
}

.card:hover {
  border-color: var(--accent);
}

.card .card-category {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.card .card-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.card .card-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Chart section */
.chart-section {
  margin-bottom: 2.5rem;
}

.chart-controls {
  margin-bottom: 1rem;
}

.chart-hint {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.model-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.model-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}

.model-toggle:hover {
  border-color: var(--accent);
}

.model-toggle.active {
  border-color: var(--accent);
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.model-toggle .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.chart-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  max-width: 700px;
  margin: 0 auto;
}

/* Table section */
.table-section {
  margin-bottom: 2.5rem;
}

.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead {
  background: var(--bg-tertiary);
  position: sticky;
  top: 0;
}

th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: normal;
  min-width: 4rem;
  user-select: none;
  transition: color 0.2s;
  border-bottom: 2px solid var(--border);
}

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

th.sorted-asc::after {
  content: " \25B2";
  font-size: 0.7rem;
}

th.sorted-desc::after {
  content: " \25BC";
  font-size: 0.7rem;
}

td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tr {
  background: var(--bg-secondary);
  transition: background 0.15s;
}

tr:hover {
  background: var(--bg-tertiary);
}

.rank-cell {
  font-weight: 700;
  text-align: center;
  width: 3rem;
}

.rank-1 { color: #ffd700; }
.rank-2 { color: #c0c0c0; }
.rank-3 { color: #cd7f32; }

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

.variant-cell {
  color: var(--text-secondary);
  font-size: 0.85em;
  font-family: monospace;
}

.provider-badge {
  display: inline-block;
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  margin-left: 0.4rem;
  vertical-align: middle;
}

.score-cell {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.score-best {
  color: var(--success);
  font-weight: 600;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.8rem;
  max-width: 1200px;
  margin: 0 auto;
}

footer p + p {
  margin-top: 0.3rem;
}

/* Responsive */
@media (max-width: 768px) {
  header {
    padding: 1.5rem 1rem;
  }

  .header-content h1 {
    font-size: 1.6rem;
  }

  main {
    padding: 1.5rem 1rem;
  }

  .cards {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  .chart-container {
    padding: 1rem;
  }

  th, td {
    padding: 0.5rem 0.6rem;
    font-size: 0.82rem;
  }
}

@media (max-width: 480px) {
  .cards {
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
  }

  .model-toggle {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
  }
}