:root {
  --page: #f9f9f7; --surface: #fcfcfb; --ink: #0b0b0b; --ink-2: #52514e; --muted: #898781;
  --grid: #e1e0d9; --axis: #c3c2b7; --border: #e1e0d9;
  --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a;
  --good: #0ca30c; --warning: #fab219; --serious: #ec835a; --critical: #d03b3b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --page: #0d0d0d; --surface: #1a1a19; --ink: #ffffff; --ink-2: #c3c2b7; --muted: #898781;
    --grid: #2c2c2a; --axis: #383835; --border: #2c2c2a;
    --s1: #3987e5; --s2: #d95926; --s3: #199e70;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--page); color: var(--ink);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px;
  padding: 12px 20px; background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.brand { font-size: 18px; font-weight: 650; letter-spacing: -0.01em; margin-right: auto;
  display: flex; align-items: center; gap: 10px; }
/* The logo is dark navy on transparent, so it always sits on a light plate. */
.brand .mark { display: flex; padding: 4px; border-radius: 8px; background: #f7f8f9; }
.login .logo { background: #f7f8f9; border-radius: 10px; padding: 18px 16px; margin-bottom: 18px; }
.login .logo img { display: block; width: 100%; height: auto; }
.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
label { color: var(--ink-2); font-size: 13px; display: flex; align-items: center; gap: 6px; }
select, .ranges button {
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid var(--axis); border-radius: 6px; padding: 5px 10px;
}
select { min-width: 150px; }
.ranges { display: flex; }
.ranges button { border-radius: 0; margin-left: -1px; cursor: pointer; }
.ranges button:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
.ranges button:last-child { border-radius: 0 6px 6px 0; }
.ranges button[aria-pressed="true"] { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.live { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-2); font-size: 13px; min-width: 64px; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); display: inline-block; flex: none; }
.live.on .dot { background: var(--good); }
.live.error .dot { background: var(--critical); }

main { max-width: 1400px; margin: 0 auto; padding: 16px 20px 40px; }
.notice { padding: 28px; text-align: center; color: var(--ink-2); background: var(--surface);
  border: 1px solid var(--border); border-radius: 10px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin-bottom: 12px; }
.tile, .card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; }
.tile { padding: 12px 16px; }
.tile .label { color: var(--ink-2); font-size: 13px; }
.tile .value { font-size: 28px; font-weight: 600; margin-top: 2px; display: flex; align-items: center; gap: 10px;
  font-variant-numeric: tabular-nums; }
.tile .value .dot { width: 12px; height: 12px; }
.tile .hint { color: var(--muted); font-size: 12px; min-height: 17px; }
.dot.ok { background: var(--good); } .dot.timeout { background: var(--warning); }
.dot.gw_down { background: var(--serious); } .dot.error { background: var(--critical); }
.tile.stale .value { color: var(--muted); }

.charts { display: grid; gap: 12px; }
.card { padding: 12px 12px 6px; }
.card h2 { font-size: 14px; font-weight: 600; margin: 0 4px 6px; }
.card h2 .sub { color: var(--muted); font-weight: 400; margin-left: 6px; }
.plot { min-height: 230px; }
.footnote { color: var(--muted); font-size: 12px; margin: 0 4px; }

.uplot { font: inherit; }
.u-legend { color: var(--ink-2); font-size: 12px; text-align: left; padding-left: 44px; }
.u-legend .u-series > * { padding: 2px 4px; }
.u-legend .u-marker { width: 14px; height: 3px; border-radius: 2px; }
.u-select { background: color-mix(in srgb, var(--s1) 18%, transparent); }

.tooltip {
  position: fixed; z-index: 10; pointer-events: none; min-width: 150px;
  background: var(--surface); color: var(--ink); border: 1px solid var(--axis); border-radius: 8px;
  padding: 8px 10px; font-size: 12px; box-shadow: 0 4px 14px rgb(0 0 0 / 0.14);
}
.tooltip .when { color: var(--ink-2); margin-bottom: 4px; }
.tooltip .row { display: flex; align-items: center; gap: 8px; font-variant-numeric: tabular-nums; }
.tooltip .row .swatch { width: 12px; height: 3px; border-radius: 2px; flex: none; }
.tooltip .row .name { color: var(--ink-2); margin-right: auto; }
.tooltip .row .val { font-weight: 600; }

[hidden] { display: none !important; }
.account { display: inline-flex; align-items: center; gap: 10px; color: var(--ink-2); font-size: 13px;
  padding-left: 16px; border-left: 1px solid var(--border); }
button { font: inherit; }
.account button, .login button {
  color: var(--ink); background: var(--surface); border: 1px solid var(--axis); border-radius: 6px;
  padding: 5px 10px; cursor: pointer;
}
.login { max-width: 400px; margin: 12vh auto 0; padding: 28px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 12px; }
.login p { color: var(--ink-2); margin: 0 0 20px; }
.login label { display: block; margin-bottom: 14px; }
.login input { display: block; width: 100%; margin-top: 5px; font: inherit; color: var(--ink);
  background: var(--page); border: 1px solid var(--axis); border-radius: 6px; padding: 8px 10px; }
.login button { width: 100%; padding: 9px; background: var(--ink); color: var(--surface); border-color: var(--ink);
  font-weight: 600; }
.login button:disabled { opacity: 0.6; cursor: default; }
.login .error { color: var(--critical); min-height: 20px; margin: 12px 0 0; font-size: 13px; }