:root {
  color-scheme: light;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --page: #f1f4f6;
  --surface: #fbfcfd;
  --ink: #101820;
  --ink-2: #47515b;
  --muted: #7f8892;
  --grid: #e2e6ea;
  --axis: #c3cad1;
  --border: rgba(16, 24, 32, 0.09);
  --dim: rgba(241, 244, 246, 0.74);
  --blue: #2a78d6;
  --band: rgba(42, 120, 214, 0.17);
  --spike: #a9bacb;
  --lost: #d03b3b;
  --nowifi: #ec835a;
  --gap: #aab3bc;
  --q50: #104281;
  --q95: #2a78d6;
  --q99: #86b6ef;
  --h0: #e8edf2;
  --h1: #cde2fb;
  --h2: #86b6ef;
  --h3: #3987e5;
  --h4: #1c5cab;
  --h5: #0d366b;
  --good: #0ca30c;
  --warning: #fab219;
  --critical: #d03b3b;
  --critical-wash: rgba(208, 59, 59, 0.08);
  --shadow: 0 6px 20px rgba(16, 24, 32, 0.12);
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0b0f13;
    --surface: #131a21;
    --ink: #edf1f4;
    --ink-2: #b3bcc5;
    --muted: #818b95;
    --grid: #222a32;
    --axis: #3a4550;
    --border: rgba(255, 255, 255, 0.08);
    --dim: rgba(19, 26, 33, 0.72);
    --blue: #3987e5;
    --band: rgba(57, 135, 229, 0.24);
    --spike: #4b5e71;
    --lost: #e04848;
    --nowifi: #ec835a;
    --gap: #5a6673;
    --q50: #cde2fb;
    --q95: #5598e7;
    --q99: #1c5cab;
    --h0: #1b242d;
    --h1: #173a66;
    --h2: #1c5cab;
    --h3: #3987e5;
    --h4: #86b6ef;
    --h5: #cde2fb;
    --critical-wash: rgba(224, 72, 72, 0.12);
    --shadow: 0 6px 20px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  background: var(--page);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 1200px; margin: 0 auto; padding: 28px 24px 72px; display: grid; gap: 18px; }

.top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 12px 24px; }
.top > div:first-child { display: grid; gap: 4px; min-width: 0; }
.eyebrow { font-family: var(--mono); font-size: 12px; color: var(--muted); letter-spacing: 0.02em; }
h1 { font-size: 30px; line-height: 1.15; font-weight: 600; letter-spacing: -0.015em; margin: 0; text-wrap: balance; }
.meta { font-family: var(--mono); font-size: 12.5px; color: var(--ink-2); }
.account { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--ink-2); }
.account form { margin: 0; }
.lede { max-width: 72ch; color: var(--ink-2); font-size: 15px; margin: 0; }
.lede b { color: var(--ink); font-weight: 600; }

.toolbar, .filters { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; }
.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--border); border-radius: 8px; padding: 2px; background: var(--page); }
.seg button, .btn {
  font: inherit; font-size: 12.5px; border: 0; background: transparent; color: var(--ink-2);
  padding: 4px 10px; border-radius: 6px; cursor: pointer; white-space: nowrap;
}
.seg button:hover, .btn:hover { color: var(--ink); }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 0 0 1px var(--border); font-weight: 500; }
.seg button:disabled, .btn:disabled { opacity: 0.45; cursor: default; }
.btn { border: 1px solid var(--border); background: var(--surface); padding: 5px 12px; }
.devices { justify-self: start; }
.devices button { font-size: 13.5px; padding: 6px 14px; display: inline-flex; align-items: center; gap: 8px; }
button:focus-visible, canvas:focus-visible, summary:focus-visible, input:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.linkbtn { font: inherit; font-size: 12.5px; color: var(--blue); background: none; border: 0; padding: 0; cursor: pointer; text-align: left; }
.linkbtn:hover { text-decoration: underline; }

.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex: none; background: var(--muted); }
.dot.live { background: var(--good); }
.dot.delayed { background: var(--warning); }
.dot.offline { background: var(--critical); }

.status {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 22px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 10px 16px; font-size: 13px;
}
.status.offline { background: var(--critical-wash); border-color: var(--critical); }
.pill { display: inline-flex; align-items: center; gap: 7px; font-weight: 600; }
.status .item { display: inline-flex; gap: 6px; color: var(--ink-2); }
.status .item b { color: var(--ink); font-weight: 500; font-variant-numeric: tabular-nums; }
.readout { font-family: var(--mono); font-size: 12px; color: var(--ink-2); font-variant-numeric: tabular-nums; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px 13px; display: grid; gap: 2px; align-content: start; }
.tile .label { font-size: 12.5px; color: var(--ink-2); }
.tile .value { font-size: 28px; line-height: 1.2; font-weight: 600; letter-spacing: -0.01em; }
.tile .value.text { font-size: 19px; line-height: 1.45; }
.tile .unit { font-size: 15px; font-weight: 500; color: var(--ink-2); margin-left: 3px; }
.tile .note { font-size: 12.5px; color: var(--muted); }
.empty { background: var(--surface); border: 1px dashed var(--axis); border-radius: 10px; padding: 18px; color: var(--ink-2); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px 16px; min-width: 0; }
.card-head { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 10px 20px; margin-bottom: 12px; }
h2 { font-size: 16px; font-weight: 600; margin: 0; letter-spacing: -0.005em; }
.sub { color: var(--ink-2); font-size: 13px; margin: 3px 0 0; max-width: 78ch; }
.loading { opacity: 0.55; transition: opacity 0.15s; }
@media (prefers-reduced-motion: reduce) { .loading { transition: none; } }

.statusline { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; margin: 2px 0 8px; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 12px; color: var(--ink-2); align-items: center; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.k { display: inline-block; flex: none; width: 14px; background: var(--c, var(--muted)); }
.k-line { height: 2px; border-radius: 1px; }
.k-band { height: 10px; border-radius: 2px; }
.k-spike { width: 2px; height: 12px; margin: 0 6px; }
.k-tick { width: 3px; height: 11px; margin: 0 5px; border-radius: 1px; }
.k-gap { width: 12px; height: 11px; border-radius: 2px; }
.k-cell { width: 11px; height: 11px; border-radius: 2px; }
.c-blue { --c: var(--blue); } .c-band { --c: var(--band); } .c-spike { --c: var(--spike); }
.c-lost { --c: var(--lost); } .c-nowifi { --c: var(--nowifi); } .c-gap { --c: var(--gap); }
.c-q50 { --c: var(--q50); } .c-q95 { --c: var(--q95); } .c-q99 { --c: var(--q99); }

.chart { position: relative; }
.chart canvas { display: block; width: 100%; touch-action: none; }
#tl { cursor: crosshair; }
#ov { margin-top: 6px; cursor: crosshair; }
.xhair { position: absolute; width: 1px; background: var(--ink-2); opacity: 0.45; pointer-events: none; }
.selbox { position: absolute; background: var(--band); border-left: 1px solid var(--blue); border-right: 1px solid var(--blue); pointer-events: none; }
.hint { font-size: 12px; color: var(--muted); margin-top: 8px; }

.tip {
  position: absolute; z-index: 10; pointer-events: none; min-width: 170px; max-width: 280px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow);
  padding: 8px 10px 7px; font-size: 12px; display: grid; gap: 2px;
}
.tip .when { font-family: var(--mono); font-size: 11.5px; color: var(--ink-2); margin-bottom: 3px; }
.tip .row { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.tip .name { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-2); }
.tip .row b { font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.tip .foot { color: var(--muted); font-size: 11.5px; margin-top: 3px; }

.scrollx { overflow-x: auto; }
svg text { font-family: var(--mono); font-size: 11px; fill: var(--muted); }
svg text.lbl { font-family: var(--sans); font-size: 12px; fill: var(--ink-2); }
svg text.val { font-family: var(--sans); font-size: 12px; font-weight: 600; fill: var(--ink); }
svg text.strong { fill: var(--ink-2); }
svg .gridline { stroke: var(--grid); stroke-width: 1; }
svg .baseline { stroke: var(--axis); stroke-width: 1; }

.heat rect.cell { cursor: pointer; }
.heat rect.hot { stroke: var(--ink); stroke-width: 1.5; }
.c0 { fill: var(--h0); --c: var(--h0); } .c1 { fill: var(--h1); --c: var(--h1); } .c2 { fill: var(--h2); --c: var(--h2); }
.c3 { fill: var(--h3); --c: var(--h3); } .c4 { fill: var(--h4); --c: var(--h4); } .c5 { fill: var(--h5); --c: var(--h5); }
.swatches { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 12px; color: var(--ink-2); margin-bottom: 10px; }
.swatches span { display: inline-flex; align-items: center; gap: 5px; }

.qline { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.q50 { stroke: var(--q50); } .q95 { stroke: var(--q95); } .q99 { stroke: var(--q99); }
.qdot { stroke: var(--surface); stroke-width: 2; }
.qdot.q50 { fill: var(--q50); } .qdot.q95 { fill: var(--q95); } .qdot.q99 { fill: var(--q99); }
.bar { fill: var(--blue); }
.bar.hot { fill: var(--q50); }

.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
@media (max-width: 880px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }

.tail { display: grid; grid-template-columns: 1fr auto auto; gap: 0 18px; margin: 12px 0 0; font-size: 13px; }
.tail > div { display: contents; }
.tail dt, .tail dd { margin: 0; padding: 5px 0; border-top: 1px solid var(--grid); }
.tail dt { color: var(--ink-2); }
.tail dd { text-align: right; font-variant-numeric: tabular-nums; }
.tail dd.muted { color: var(--muted); }

table { border-collapse: collapse; width: 100%; font-size: 13px; }
th { font-weight: 500; color: var(--muted); font-size: 12px; text-align: right; padding: 6px 10px; white-space: nowrap; border-bottom: 1px solid var(--axis); }
td { text-align: right; padding: 6px 10px; border-top: 1px solid var(--grid); font-variant-numeric: tabular-nums; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; padding-left: 0; }
th:last-child, td:last-child { padding-right: 0; }
td.when { font-family: var(--mono); font-size: 12.5px; color: var(--ink); }
td.hi { color: var(--ink); font-weight: 600; }
tr.single td { color: var(--ink-2); }
.table-foot { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; margin-top: 10px; font-size: 12.5px; color: var(--muted); }

details summary { cursor: pointer; font-weight: 600; font-size: 16px; }
details summary .sub { font-weight: 400; display: block; }
details[open] summary { margin-bottom: 12px; }

footer { font-size: 12.5px; color: var(--muted); max-width: 80ch; display: grid; gap: 6px; }
footer a { color: var(--blue); }

/* Login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login form { width: min(360px, 100%); background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 24px; display: grid; gap: 14px; }
.login h1 { font-size: 22px; }
.login label { display: grid; gap: 5px; font-size: 13px; color: var(--ink-2); }
.login input { font: inherit; font-size: 15px; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--axis); background: var(--page); color: var(--ink); }
.login button { font: inherit; font-weight: 500; padding: 9px 12px; border-radius: 8px; border: 0; background: var(--blue); color: #fff; cursor: pointer; }
.login .error { color: var(--critical); font-size: 13px; margin: 0; }

@media (max-width: 600px) {
  .wrap { padding: 20px 14px 56px; }
  h1 { font-size: 25px; }
  .card { padding: 14px 14px 12px; }
}