:root {
  --bg: #0f1419;
  --panel: #1a212b;
  --panel-border: #2a3340;
  --text: #e6edf3;
  --muted: #8b96a3;
  --accent: #6ea8ff;
  --warm: #ff7a59;
  --cool: #4ec5ff;
  --rain: #5fb8ff;
}

* { 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;
  line-height: 1.5;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

header h1 {
  margin: 0 0 6px;
  font-size: 28px;
  letter-spacing: -0.01em;
}

.subtitle {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 14px;
}

.status {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 14px;
}

.status.error {
  border-color: var(--warm);
  color: var(--warm);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat .label {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat .value {
  font-size: 18px;
  font-weight: 600;
}

.card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 16px 18px 20px;
  margin-bottom: 20px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 16px;
  color: var(--muted);
  font-weight: 500;
}

.chart-wrap {
  position: relative;
  height: 340px;
}

footer {
  margin-top: 24px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

footer a {
  color: var(--accent);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}