:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --text: #1b1f24;
  --muted: #5d6673;
  --faint: #8b94a1;
  --line: #e3e6eb;
  --accent: #2f6fde;
  --up: #1f9d55;
  --slow: #c98a00;
  --down: #d93636;
  --none: #d5d9df;
  --shadow: 0 1px 2px rgba(20, 30, 45, .06), 0 2px 8px rgba(20, 30, 45, .04);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --panel: #171b21;
    --text: #e7eaee;
    --muted: #a0a8b3;
    --faint: #6f7883;
    --line: #262c34;
    --accent: #6ea1ff;
    --up: #3cc47a;
    --slow: #e3ad2b;
    --down: #ff5f5f;
    --none: #2c333c;
    --shadow: none;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: inherit; text-decoration: none; }
.wrap { width: min(1600px, 100% - 32px); margin: 0 auto; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* header */
.top {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.top-row { display: flex; align-items: center; gap: 16px; padding: 14px 0; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; letter-spacing: -.01em; }
.brand-mark {
  width: 22px; height: 22px; border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), #8a5cf6);
}
.summary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--line);
  font-size: 14px; color: var(--muted);
}
.summary .dot { width: 9px; height: 9px; }
.summary.ok { color: var(--text); }
.summary.bad { color: var(--down); border-color: color-mix(in srgb, var(--down) 40%, var(--line)); }
.search { margin-left: auto; flex: 0 1 320px; }
.search input {
  width: 100%; padding: 8px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  font: inherit; font-size: 14px;
}
.search input:focus { outline: 2px solid color-mix(in srgb, var(--accent) 50%, transparent); outline-offset: 0; }

/* groups */
main { padding: 8px 0 24px; }
.group { margin-top: 26px; }
.group h2 {
  display: flex; align-items: baseline; gap: 10px;
  margin: 0 0 12px; font-size: 13px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .06em; color: var(--muted);
}
.group h2 .count { font-weight: 500; color: var(--faint); letter-spacing: 0; text-transform: none; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 12px; }

/* cards */
.card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 14px 16px 12px; border-radius: 10px;
  background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow);
  transition: border-color .12s, transform .12s;
  min-width: 0;
}
.card:hover, .card:focus-visible { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); transform: translateY(-1px); outline: none; }
.card.down { border-color: color-mix(in srgb, var(--down) 45%, var(--line)); }
.card-head { display: flex; align-items: center; gap: 9px; min-width: 0; }
.dot { flex: none; width: 10px; height: 10px; border-radius: 50%; background: var(--none); }
.dot.up { background: var(--up); box-shadow: 0 0 0 3px color-mix(in srgb, var(--up) 18%, transparent); }
.dot.slow { background: var(--slow); box-shadow: 0 0 0 3px color-mix(in srgb, var(--slow) 18%, transparent); }
.dot.down { background: var(--down); box-shadow: 0 0 0 3px color-mix(in srgb, var(--down) 22%, transparent); }
.name { font-weight: 600; font-size: 15.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.host {
  margin-left: auto; flex: none;
  font-size: 11.5px; padding: 1px 7px; border-radius: 5px;
  color: var(--muted); background: color-mix(in srgb, var(--muted) 12%, transparent);
}
.desc { color: var(--muted); font-size: 13.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.domain { color: var(--faint); font-size: 12.5px; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.err { color: var(--down); font-size: 13px; }

.bars { display: grid; grid-template-columns: repeat(48, 1fr); gap: 2px; height: 22px; margin-top: 2px; }
.bars span { border-radius: 2px; background: var(--none); }
.bars span.up { background: var(--up); opacity: .75; }
.bars span.part { background: var(--slow); }
.bars span.down { background: var(--down); }

.stats { display: flex; gap: 6px 12px; font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; flex-wrap: wrap; }
.stats b { color: var(--text); font-weight: 600; }
.stats .warn b { color: var(--slow); }
.stats .bad b { color: var(--down); }

.empty { color: var(--muted); padding: 40px 0; text-align: center; }
.foot { color: var(--faint); font-size: 13px; padding: 8px 0 40px; border-top: 1px solid var(--line); }
.foot p { margin: 8px 0; }

@media (max-width: 640px) {
  .search { flex-basis: 100%; margin-left: 0; }
  .grid { grid-template-columns: 1fr; }
}