:root {
  --blue: #1a3a6b;
  --red: #c8102e;
  --light: #f5f6fa;
  --border: #dde1ea;
  --text: #1a1a2e;
  --muted: #6b7280;
  --card-bg: #fff;
  --radius: 10px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--light);
  color: var(--text);
  font-size: 15px;
}

header {
  background: linear-gradient(135deg, var(--blue) 0%, #0d2550 100%);
  color: #fff;
  padding: 2.5rem 2rem 2rem;
  border-bottom: 4px solid var(--red);
}

.header-inner { max-width: 1100px; margin: 0 auto; }

header h1 { font-size: 2rem; font-weight: 700; letter-spacing: -0.5px; }
header .subtitle { color: rgba(255,255,255,0.72); margin-top: 0.4rem; font-size: 1rem; }

main { max-width: 1100px; margin: 0 auto; padding: 2rem 1.5rem 4rem; }

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.card-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue);
  line-height: 1;
}

.card-label {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.4rem;
}

.card--accent { border-left: 4px solid var(--red); }
.card-value--sm { font-size: 1.4rem; }

.median-badge {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.3rem 0.9rem;
  background: var(--red);
  color: #fff;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* Filter bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.btn-group { display: flex; gap: 0.4rem; flex-wrap: wrap; }

.btn {
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: #fff;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text);
  transition: all 0.15s;
}

.btn:hover { border-color: var(--blue); color: var(--blue); }
.btn.active { background: var(--blue); color: #fff; border-color: var(--blue); }

/* Chart sections */
.chart-section {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.chart-section h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--blue);
}

.chart-desc {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.chart-controls {
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.chart-controls select, label select {
  margin-left: 0.4rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.85rem;
}

.chart-wrap { position: relative; height: 320px; }
.chart-wrap--tall { height: 420px; }
.chart-wrap--xl { height: 560px; }

/* Splits */
.splits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.split-card {
  padding: 1.25rem;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.split-card.positive { background: #fff1f2; border: 1px solid #fecdd3; }
.split-card.even { background: #f0fdf4; border: 1px solid #bbf7d0; }
.split-card.negative { background: #eff6ff; border: 1px solid #bfdbfe; }

.split-value {
  font-size: 2rem;
  font-weight: 700;
}

.positive .split-value { color: var(--red); }
.even .split-value { color: #16a34a; }
.negative .split-value { color: #2563eb; }

.split-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-top: 0.3rem;
}

.split-pct {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 0.3rem;
  color: var(--text);
}

/* Top runners */
.top-controls {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

thead th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 2px solid var(--border);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

tbody tr:hover { background: var(--light); }

tbody td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

tbody tr:first-child td { font-weight: 600; }

/* Nationality table */
.nat-table { font-size: 0.875rem; }
.nat-table th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
.nat-table th.sortable::after { content: ' ↕'; color: var(--border); font-size: 0.75rem; }
.nat-table th.sort-asc::after { content: ' ↑'; color: var(--blue); }
.nat-table th.sort-desc::after { content: ' ↓'; color: var(--blue); }
.nat-table td:nth-child(1) { color: var(--muted); width: 2.5rem; }
.nat-table td:nth-child(3),
.nat-table td:nth-child(4),
.nat-table td:nth-child(5) { font-variant-numeric: tabular-nums; }

footer {
  text-align: center;
  padding: 2rem;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

footer a { color: var(--blue); text-decoration: none; }

@media (max-width: 600px) {
  .splits-grid { grid-template-columns: 1fr; }
  .chart-wrap { height: 250px; }
  .chart-wrap--tall { height: 350px; }
  header h1 { font-size: 1.4rem; }
}