:root {
  --bg: #0f1115;
  --surface: #181b22;
  --surface-2: #20242d;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --text-dim: #9aa0ab;
  --accent: #4ade80;
  --accent-dim: #22c55e33;
  --danger: #ef4444;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
}

header h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.meta {
  font-size: 12px;
  color: var(--text-dim);
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  text-align: center;
}

.kpi-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.kpi-value {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.1;
  margin-top: 8px;
  letter-spacing: -0.02em;
}

.kpi-sub {
  font-size: 13px;
  color: var(--text-dim);
  margin-top: 8px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.card h2 {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

canvas {
  max-height: 300px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

th {
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  font-weight: 600;
}

td.cost {
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.muted {
  color: var(--text-dim);
}

ul {
  margin: 0;
  padding-left: 20px;
}

ul li {
  padding: 4px 0;
}

footer {
  padding: 24px 32px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 12px;
}

footer code {
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 11px;
}

#error-banner {
  position: fixed;
  top: 16px;
  right: 16px;
  background: var(--danger);
  color: white;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 13px;
  max-width: 400px;
}

@media (max-width: 768px) {
  .grid {
    grid-template-columns: 1fr;
  }
  .kpi-value {
    font-size: 40px;
  }
  main {
    padding: 16px;
  }
  header {
    padding: 16px;
  }
}