* { box-sizing: border-box; }
body {
  font-family: -apple-system, Segoe UI, Roboto, sans-serif;
  background: #0f1117;
  color: #e6e6e6;
  margin: 0;
  padding: 24px;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 24px;
}
h1 { font-size: 20px; font-weight: 600; }
#last-update { color: #888; font-size: 13px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.card {
  background: #1a1d29;
  border-radius: 10px;
  padding: 16px 18px;
  border: 1px solid #2a2e3d;
}

.card h2 {
  font-size: 16px;
  margin: 0 0 12px 0;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 14px;
  border-bottom: 1px solid #23263280;
}

.metric-row:last-child { border-bottom: none; }

.metric-value { font-weight: 600; }
.ok { color: #4ade80; }
.warn { color: #facc15; }
.bad { color: #f87171; }

.timestamp {
  font-size: 11px;
  color: #666;
  margin-top: 10px;
}