:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --surface-2: #fcfcfd;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --shadow: 0 10px 30px rgba(17, 24, 39, 0.06);
  --shadow-soft: 0 6px 18px rgba(17, 24, 39, 0.04);
  --radius: 18px;
  --radius-sm: 12px;
  --transition: 180ms ease;
  --max-width: 1440px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behaviour: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(to bottom, #ffffff 0%, #f7f8fa 100%);
  color: var(--text);
  line-height: 1.5;
}

h1,
h2,
h3,
p {
  margin: 0;
}

.header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  animation: fadeUp 500ms ease;
}

.header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.subheading {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.98rem;
}

.controls {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: lowercase;
}

.filter-group select {
  min-width: 180px;
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: var(--shadow-soft);
}

.filter-group select:hover {
  transform: translateY(-1px);
}

.filter-group select:focus {
  border-color: #cfd4dc;
  box-shadow: 0 0 0 4px rgba(17, 24, 39, 0.04);
}

.last-updated {
  font-size: 0.88rem;
  color: var(--muted);
  padding-bottom: 10px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 48px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.metric-card {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  animation: fadeUp 550ms ease both;
}

.metric-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: #d8dde6;
}

.metric-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 12px;
}

.metric-card p {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.leaderboards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.leaderboards.single-column {
  grid-template-columns: 1fr;
}

.leaderboard,
.table-section {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  animation: fadeUp 650ms ease both;
  overflow: hidden;
}

.leaderboard:hover,
.table-section:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: #d8dde6;
}

.leaderboard h2,
.table-section h2 {
  padding: 20px 22px 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-note {
  padding: 8px 22px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
}

thead th {
  text-align: left;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--muted);
  padding: 0 22px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody tr {
  transition: background-color var(--transition);
}

tbody tr:hover {
  background: #fafafa;
}

tbody td {
  padding: 14px 22px;
  border-bottom: 1px solid #f0f2f4;
  font-size: 0.94rem;
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: none;
}

.empty-row td,
.loading-row td,
.error-row td {
  color: var(--muted);
  padding: 18px 22px 22px;
}

.mono {
  font-variant-numeric: tabular-nums;
}

.table-section {
  padding-bottom: 18px;
}

.airtable-container {
  margin-top: 18px;
  padding: 0 22px 4px;
}

.airtable-embed {
  width: 100%;
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}

.fade-swap {
  animation: fadeSwap 220ms ease;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeSwap {
  from {
    opacity: 0.45;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1180px) {
  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .leaderboards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .header {
    flex-direction: column;
    align-items: stretch;
  }

  .controls {
    align-items: stretch;
  }

  .filter-group select {
    width: 100%;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 16px 36px;
  }

  .header {
    padding: 28px 16px 20px;
  }

  .metric-card p {
    font-size: 1.7rem;
  }

  thead th,
  tbody td {
    padding-left: 16px;
    padding-right: 16px;
  }

  .leaderboard h2,
  .table-section h2,
  .section-note,
  .airtable-container {
    padding-left: 16px;
    padding-right: 16px;
  }
}