:root {
  --bg: #0f1419;
  --panel: #1a222c;
  --text: #e7ecf3;
  --muted: #8b98a8;
  --accent: #3d9cf0;
  --border: #2a3542;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, #1b2a3d, var(--bg));
  color: var(--text);
  min-height: 100vh;
}

.top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

h1 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: 0.02em;
}

.sub {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: end;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--muted);
}

input,
select,
button {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
  font: inherit;
}

button {
  cursor: pointer;
  background: var(--accent);
  border-color: transparent;
  color: #041018;
  font-weight: 600;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  padding: 1rem 1.5rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.9rem 1rem;
}

.card .label {
  color: var(--muted);
  font-size: 0.8rem;
}

.card .value {
  font-size: 1.6rem;
  margin-top: 0.25rem;
  font-variant-numeric: tabular-nums;
}

.charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding: 0 1.5rem 1.5rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem 1rem 1rem;
}

.panel.wide {
  grid-column: 1 / -1;
}

.panel h2 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
}

.chart {
  width: 100%;
  height: 320px;
}

.chart.tall {
  height: 360px;
}

.error {
  color: #ff8f8f;
  padding: 0 1.5rem 1.5rem;
}

.ranking-panel {
  margin: 0 1.5rem 1.5rem;
}

.ranking-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.ranking-head h2 {
  margin: 0;
}

.ranking-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.ranking-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.ranking-table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.ranking-table th,
.ranking-table td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.ranking-table th {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(0, 0, 0, 0.2);
}

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

.ranking-table tbody tr:hover {
  background: rgba(61, 156, 240, 0.08);
}

.col-rank {
  width: 4rem;
}

.col-count,
.col-share {
  width: 7rem;
}

.col-last {
  width: 11rem;
  white-space: nowrap;
}

.rank-badge {
  display: inline-flex;
  min-width: 1.6rem;
  justify-content: center;
  font-weight: 700;
}

.rank-badge.top1 {
  color: #f5c542;
}

.rank-badge.top2 {
  color: #c0c8d4;
}

.rank-badge.top3 {
  color: #d08a4a;
}

.share-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.share-track {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: #243040;
  overflow: hidden;
  min-width: 48px;
  max-width: 120px;
}

.share-fill {
  height: 100%;
  background: var(--accent);
  border-radius: inherit;
}

.share-pct {
  min-width: 3.2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.ranking-empty {
  margin: 0.75rem 0 0;
  color: var(--muted);
}

@media (max-width: 900px) {
  .cards,
  .charts {
    grid-template-columns: 1fr;
  }

  .ranking-panel {
    margin-left: 1rem;
    margin-right: 1rem;
  }
}