:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --s1: #2a78d6;
  --s2: #eb6834;
  --s3: #1baf7a;
  --s4: #eda100;
  --s5: #e87ba4;
  --s6: #008300;
  --s7: #6250d6;
  --s8: #e34948;
  --bar: #86b6ef;
  --good: #0ca30c;
  --good-text: #006300;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --cell-line: rgba(82, 81, 78, 0.28);
  --div-pos: #2a78d6;
  --div-neg: #e34948;
  --div-mid: #f0efec;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #232321;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --s1: #3987e5;
    --s2: #d95926;
    --s3: #199e70;
    --s4: #c98500;
    --s5: #d55181;
    --s6: #008300;
    --s7: #9085e9;
    --s8: #e66767;
    --bar: #256abf;
    --good-text: #0ca30c;
    --cell-line: rgba(195, 194, 183, 0.22);
    --div-pos: #3987e5;
    --div-neg: #e66767;
    --div-mid: #383835;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #232321;
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --s1: #3987e5;
  --s2: #d95926;
  --s3: #199e70;
  --s4: #c98500;
  --s5: #d55181;
  --s6: #008300;
  --s7: #9085e9;
  --s8: #e66767;
  --bar: #256abf;
  --good-text: #0ca30c;
  --cell-line: rgba(195, 194, 183, 0.22);
  --div-pos: #3987e5;
  --div-neg: #e66767;
  --div-mid: #383835;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 14px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
}
code { font: 12px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
a { color: var(--s1); }
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* header */
.top {
  position: sticky; top: 0; z-index: 10;
  background: var(--page);
  border-bottom: 1px solid var(--border);
}
.status {
  display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center;
  padding: 8px 16px 4px;
  font-size: 13px;
}
.status .item { display: inline-flex; gap: 5px; align-items: baseline; white-space: nowrap; }
.status .k { color: var(--muted); }
.status .v { font-variant-numeric: tabular-nums; }
.meter { align-self: center; width: 48px; height: 6px; border-radius: 3px; background: var(--border); overflow: hidden; }
.meter .fill { display: block; height: 100%; background: var(--good); }
.meter .fill.warning { background: var(--warning); }
.meter .fill.critical { background: var(--critical); }
.tabs {
  display: flex; gap: 2px; padding: 0 12px; overflow-x: auto; scrollbar-width: none;
}
.tabs a {
  padding: 8px 10px 7px; color: var(--ink-2); text-decoration: none; white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.tabs a.active { color: var(--ink); border-bottom-color: var(--s1); font-weight: 600; }
.tabs .theme {
  margin-left: auto; align-self: center;
  background: none; border: 1px solid var(--border); border-radius: 6px;
  color: var(--ink-2); font: inherit; font-size: 12px; padding: 2px 8px; cursor: pointer;
}

/* status chips: colour + icon + label, never colour alone */
.chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 1px 7px; border-radius: 10px; font-size: 12px; font-weight: 600;
  border: 1px solid var(--border); background: var(--surface);
}
.chip::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.chip.good::before { background: var(--good); }
.chip.warning::before { background: var(--warning); }
.chip.serious::before { background: var(--serious); }
.chip.critical { color: var(--critical); border-color: var(--critical); }
.chip.critical::before { background: var(--critical); }
.chip.off::before { background: transparent; border: 1.5px solid var(--muted); width: 5px; height: 5px; }

main { max-width: 1280px; margin: 0 auto; padding: 12px 16px 24px; }
.page { display: none; }
.page.active { display: block; }
.foot { max-width: 1280px; margin: 0 auto; padding: 0 16px 24px; color: var(--muted); font-size: 12px; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 14px; margin-bottom: 12px; min-width: 0;
}
.card h3 { margin: 0 0 8px; font-size: 14px; font-weight: 600; }
.card h3 .sub { font-weight: 400; color: var(--muted); font-size: 12px; margin-left: 6px; }
.note { color: var(--ink-2); font-size: 13px; margin: 0 2px 12px; }
.note:empty { display: none; }

/* stat tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; margin-bottom: 12px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; min-width: 0; }
.tile .label { color: var(--ink-2); font-size: 12px; }
.tile .value { font-size: 24px; font-weight: 600; line-height: 1.25; margin: 2px 0; overflow-wrap: anywhere; }
.tile .value .unit { font-size: 14px; font-weight: 400; color: var(--ink-2); margin-left: 2px; }
.tile .detail { color: var(--muted); font-size: 12px; overflow-wrap: anywhere; }

/* cell table */
.cells-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.cells table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.cells th { text-align: left; color: var(--muted); font-weight: 400; font-size: 12px; padding: 0 6px 4px; }
.cells td { padding: 2px 6px; height: 24px; }
.cells tr.cell { cursor: pointer; }
.cells tr.cell:hover td { background: var(--surface-2); }
.cells tr.cell.hl td:first-child { box-shadow: inset 3px 0 0 var(--hl); }
.cells td.n { color: var(--ink-2); width: 2.5em; }
.cells td.v { width: 5.5em; }
.cells td.d { width: 4.5em; text-align: right; color: var(--ink-2); }
.cells td.bar { width: 40%; }
.cells .barbox { height: 10px; position: relative; }
.cells .barfill { position: absolute; left: 0; top: 0; bottom: 0; background: var(--bar); border-radius: 0 4px 4px 0; min-width: 1px; }
.cells td.tags { white-space: nowrap; font-size: 11px; }
.tag { display: inline-block; padding: 0 5px; border-radius: 4px; border: 1px solid var(--border); color: var(--ink-2); margin-right: 3px; }
.tag.bal { color: var(--ink); border-color: var(--s2); }
.tag.bal::before { content: "\2193 "; color: var(--s2); }
.tag.ign { color: var(--muted); }
.stale { color: var(--muted); }

/* charts */
.chart-card { padding-bottom: 6px; }
.chart { width: 100%; min-height: 220px; position: relative; }
.chart .empty { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 13px; }
.chart.loading .u-wrap { opacity: 0.5; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.uplot { font-family: inherit; }
.u-legend { font-size: 12px; color: var(--ink-2); }
.u-legend .u-value { font-variant-numeric: tabular-nums; color: var(--ink); font-weight: 600; }
.u-legend th { font-weight: 400; }

/* filter row */
.filters { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-bottom: 12px; }
.filters button, .seg button {
  font: inherit; font-size: 13px; padding: 4px 10px; border-radius: 6px; cursor: pointer;
  background: var(--surface); color: var(--ink-2); border: 1px solid var(--border);
}
.filters button.on { color: var(--ink); border-color: var(--s1); box-shadow: inset 0 0 0 1px var(--s1); font-weight: 600; }
.filters input[type=search], .picker input[type=search], .filters input[type=datetime-local] {
  font: inherit; padding: 5px 8px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--surface); color: var(--ink); min-width: 0;
}
.filters input[type=search] { flex: 1; max-width: 420px; }
.filters .lbl { color: var(--muted); font-size: 12px; margin-left: 6px; }

/* tables */
.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th { text-align: left; font-weight: 400; color: var(--muted); font-size: 12px; padding: 4px 8px; border-bottom: 1px solid var(--border); }
.tbl td { padding: 3px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.tbl .num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl td.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }
.tbl tr.group td { background: var(--surface-2); color: var(--ink-2); font-weight: 600; font-size: 12px; }
.tbl tr.click { cursor: pointer; }
.tbl tr.click:hover td { background: var(--surface-2); }
.tbl tr.unknown td { color: var(--serious); }
.card > .tbl { margin: -4px 0; }
.card { overflow-x: auto; }

/* overview cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px; align-items: start; }
.cards .card { margin: 0; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; font-size: 13px; }
.kv .k { color: var(--ink-2); }
.kv .v { text-align: right; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.age { float: right; color: var(--muted); font-weight: 400; font-size: 12px; }

/* thermistors */
.therms { display: grid; grid-template-columns: repeat(9, 1fr); gap: 6px; }
.therm { border: 1px solid var(--border); border-radius: 6px; padding: 4px 6px; text-align: center; }
.therm .n { color: var(--muted); font-size: 11px; }
.therm .t { font-weight: 600; font-variant-numeric: tabular-nums; }

/* history */
.hist-layout { display: grid; grid-template-columns: 300px 1fr; gap: 12px; align-items: start; }
.picker { position: sticky; top: 92px; max-height: calc(100vh - 110px); display: flex; flex-direction: column; gap: 8px; }
.picker input { width: 100%; }
.pick-list { overflow-y: auto; font-size: 12px; min-height: 120px; }
.pick-list .grp { color: var(--muted); margin: 8px 0 2px; font-weight: 600; }
.pick-list label { display: flex; gap: 6px; align-items: center; padding: 1px 0; cursor: pointer; overflow-wrap: anywhere; }
.picked { display: flex; flex-wrap: wrap; gap: 4px; }
.picked:empty::before { content: "Pick signals below. Charts are grouped by unit."; color: var(--muted); font-size: 12px; }
.picked button {
  font: inherit; font-size: 12px; display: inline-flex; gap: 5px; align-items: center;
  border: 1px solid var(--border); border-radius: 10px; padding: 1px 8px; background: var(--surface); color: var(--ink); cursor: pointer;
}
.picked button i { width: 12px; height: 2px; background: var(--c); display: inline-block; }
.hist-charts { min-width: 0; }

/* open wire */
.owchart { position: relative; min-height: 120px; }
.owchart svg, .owheat canvas { display: block; }
.owchart .empty, .owheat .empty { padding: 40px 0; text-align: center; color: var(--muted); font-size: 13px; }
.owsvg text { fill: var(--muted); font-size: 11px; font-family: inherit; font-variant-numeric: tabular-nums; }
.owsvg text.grp { fill: var(--ink-2); font-weight: 600; }
.owsvg text.val { fill: var(--ink-2); }
.owsvg .grid { stroke: var(--grid); stroke-width: 1; }
.owsvg .zero { stroke: var(--axis); stroke-width: 1; }
.owsvg .thr { stroke: var(--ink-2); stroke-width: 1; stroke-dasharray: 4 3; }
.owsvg .selband { fill: var(--surface-2); }
.owsvg .hit { fill: transparent; cursor: pointer; }
.owheat { position: relative; }
.owheat canvas { cursor: crosshair; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: center; font-size: 12px; color: var(--ink-2); margin: -2px 0 6px; }
.legend i { display: inline-block; width: 12px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }
.legend .ramp { display: inline-block; width: 160px; height: 10px; border-radius: 2px; vertical-align: -1px; margin: 0 6px; }
.tip {
  position: fixed; z-index: 30; pointer-events: none; display: none;
  background: var(--surface); color: var(--ink); border: 1px solid var(--border); border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15); padding: 6px 9px; font-size: 12px; max-width: 280px;
}
.tip .t { font-weight: 600; margin-bottom: 3px; }
.tip .kv { font-size: 12px; gap: 1px 10px; }
#ow-table tr.sel td:first-child { box-shadow: inset 3px 0 0 var(--s1); }
#ow-table td .chip { font-size: 11px; padding: 0 6px; margin-right: 3px; }

@media (max-width: 900px) {
  .cells-wrap, .grid2, .hist-layout { grid-template-columns: 1fr; }
  .picker { position: static; max-height: 50vh; }
  .therms { grid-template-columns: repeat(6, 1fr); }
}
@media (max-width: 480px) {
  .tiles { grid-template-columns: 1fr 1fr; }
  .tile .value { font-size: 20px; }
  .cells td.bar { width: 25%; }
  .therms { grid-template-columns: repeat(3, 1fr); }
}