:root {
  --bg: #0f1115;
  --card: #1a1d24;
  --line: #2a2e38;
  --text: #e6e8ec;
  --muted: #9aa0ab;
  --ok: #2a9d8f;
  --down: #e63946;
  --warn: #e9a23b;
  --unknown: #6b7280;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.4 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
header h1 { font-size: 18px; margin: 0; }
#updated { color: var(--muted); font-size: 12px; }
main {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  padding: 20px;
}
footer { color: var(--muted); font-size: 12px; padding: 4px 20px 24px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--unknown);
  border-radius: 10px;
  padding: 14px;
}
.card.ok { border-left-color: var(--ok); }
.card.down { border-left-color: var(--down); }
.card.warn { border-left-color: var(--warn); }
.card .head { display: flex; align-items: center; gap: 8px; }
.card .head h2 { font-size: 15px; margin: 0; flex: 1; }
.card .host { color: var(--muted); font-size: 11px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--unknown); }
.card.ok .dot { background: var(--ok); }
.card.down .dot { background: var(--down); }
.card.warn .dot { background: var(--warn); }
.metrics { display: flex; gap: 14px; margin: 12px 0 8px; }
.metrics label { display: block; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; }
.metrics b { font-size: 16px; font-variant-numeric: tabular-nums; }
.graphs { display: flex; flex-direction: column; gap: 6px; }
.graphs label { color: var(--muted); font-size: 11px; }
.graphs svg { display: block; width: 100%; height: 36px; background: #12141a; border-radius: 6px; }