:root {
  --bg: #0b1220;
  --panel: #121b2e;
  --border: #223049;
  --text: #e8edf7;
  --muted: #8ea0bd;
  --accent: #4fd1c5;
  --accent2: #f6ad55;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header { padding: 28px 24px 12px; text-align: center; }
h1 { margin: 0; font-size: 1.6rem; font-weight: 700; letter-spacing: -0.01em; }
.subtitle { margin: 4px 0 0; color: var(--muted); }
.muted { color: var(--muted); font-size: 0.85rem; }

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label { color: var(--muted); font-size: 0.85rem; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--accent); }
.stat-unit { color: var(--muted); font-size: 0.78rem; }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
}

.panel h2 { margin: 0 0 6px; font-size: 1.05rem; }
.chart-wrap { position: relative; height: 280px; margin-top: 10px; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--muted);
}
.legend span.swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  margin-right: 5px;
  vertical-align: middle;
}

footer { text-align: center; padding: 20px; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  margin: 6px 0 14px;
}

.breadcrumb button {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.9rem;
  padding: 2px 4px;
}

.breadcrumb button:hover { text-decoration: underline; }

.breadcrumb .crumb-sep { color: var(--muted); }

.breadcrumb .crumb-current { color: var(--text); font-weight: 600; }

.table-wrap {
  max-height: 520px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
}

#drilldown-chart-inner { position: relative; width: 100%; }