:root {
  --fg: #1a1a1a;
  --muted: #666;
  --accent: #c00;
  --bg: #fafafa;
  --row-hover: #f0f0f0;
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
}

header h1 { margin: 0 0 0.25rem; }
header p { color: var(--muted); margin: 0 0 1rem; }
nav { margin-top: 0.5rem; }
nav a {
  margin-right: 1rem;
  color: var(--accent);
  text-decoration: none;
}
nav a:hover { text-decoration: underline; }

.meta {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 1rem 0;
}

.filters {
  margin: 1rem 0;
  display: flex;
  gap: 0.5rem;
}
.filters input, .filters select {
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: #fff;
  font-size: 0.95rem;
}
.filters input { flex: 1; max-width: 320px; }

.leaderboard {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  background: #fff;
  border: 1px solid #eaeaea;
  border-radius: 6px;
  overflow: hidden;
}
.leaderboard th, .leaderboard td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid #eee;
  font-size: 0.95rem;
}
.leaderboard th {
  background: #f7f7f7;
  font-weight: 600;
}
.leaderboard tr:last-child td { border-bottom: none; }
.leaderboard tr:hover { background: var(--row-hover); }
.leaderboard small { color: var(--muted); }

footer {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}