/* atlas-analytics dashboard — tokens are the validated data-viz palette
   (references/palette.md), stepped for light & dark. Theme is chosen, not
   auto-flipped: prefers-color-scheme sets the default, [data-theme] wins. */

:root {
  --surface-1: #fcfcfb;
  --plane: #f9f9f7;
  --card: #ffffff;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --border-2: rgba(11, 11, 11, 0.06);
  --series-1: #2a78d6;
  --seq-100: #cde2fb; --seq-300: #6da7ec; --seq-450: #2a78d6; --seq-600: #184f95;
  --good: #0ca30c; --good-ink: #006300; --warning: #fab219; --critical: #d03b3b;
  --shadow: 0 1px 2px rgba(11,11,11,.04), 0 4px 16px rgba(11,11,11,.05);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --surface-1: #1a1a19;
  --plane: #0d0d0d;
  --card: #181817;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --border-2: rgba(255, 255, 255, 0.06);
  --series-1: #3987e5;
  --seq-100: #104281; --seq-300: #256abf; --seq-450: #3987e5; --seq-600: #86b6ef;
  --good: #0ca30c; --good-ink: #0ca30c; --warning: #fab219; --critical: #d03b3b;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.35);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--plane);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--series-1); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; cursor: pointer; }
.tnum { font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }

/* ---- header ---- */
header.top {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 20px;
  background: color-mix(in srgb, var(--plane) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 650; letter-spacing: -.01em; }
.brand svg { width: 22px; height: 22px; }
.brand .dim { color: var(--muted); font-weight: 500; }
header .spacer { flex: 1; }
.livepill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--ink-2);
  padding: 4px 9px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface-1);
}
.livedot { width: 7px; height: 7px; border-radius: 50%; background: var(--good); box-shadow: 0 0 0 0 var(--good); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--good) 60%, transparent); } 70% { box-shadow: 0 0 0 6px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

.iconbtn {
  display: inline-grid; place-items: center; width: 34px; height: 34px;
  border: 1px solid var(--border); border-radius: 9px; background: var(--surface-1); color: var(--ink-2);
}
.iconbtn:hover { color: var(--ink); border-color: var(--axis); }

/* segmented range control */
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 9px; overflow: hidden; background: var(--surface-1); }
.seg button { padding: 6px 11px; border: 0; background: transparent; color: var(--ink-2); font-size: 12.5px; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--ink); color: var(--surface-1); }

/* ---- nav ---- */
nav.tabs { display: flex; gap: 4px; padding: 10px 20px 0; flex-wrap: wrap; }
nav.tabs button {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 12px; border: 1px solid transparent; border-radius: 9px;
  background: transparent; color: var(--ink-2); font-size: 13px;
}
nav.tabs button:hover { background: var(--surface-1); }
nav.tabs button.on { background: var(--surface-1); border-color: var(--border); color: var(--ink); font-weight: 600; box-shadow: var(--shadow); }
nav.tabs .swatch { width: 9px; height: 9px; border-radius: 3px; }

/* ---- layout ---- */
main { padding: 18px 20px 60px; max-width: 1280px; margin: 0 auto; }
.grid { display: grid; gap: 14px; }
.cols-kpi { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.cols-2 { grid-template-columns: 1fr 1fr; }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-sites { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
@media (max-width: 820px) { .cols-2, .cols-3 { grid-template-columns: 1fr; } }

.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); }
.card.pad { padding: 16px; }
.card h3 { margin: 0 0 2px; font-size: 13px; font-weight: 600; letter-spacing: .01em; }
.card .sub { color: var(--muted); font-size: 12px; margin-bottom: 10px; }
.cardhead { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 12px; }

/* KPI tile */
.kpi { padding: 14px 16px; }
.kpi .label { color: var(--muted); font-size: 12px; margin-bottom: 6px; }
.kpi .val { font-size: 28px; font-weight: 680; letter-spacing: -.02em; line-height: 1.1; }
.kpi .val small { font-size: 15px; font-weight: 600; color: var(--ink-2); }
.kpi .foot { margin-top: 6px; font-size: 12px; color: var(--muted); }

/* utilisation meter (server resources) */
.meter { height: 6px; border-radius: 4px; background: var(--border); overflow: hidden; margin-top: 9px; }
.meter span { display: block; height: 100%; border-radius: 4px; transition: width .5s ease; }

/* site cards (small multiples) */
.sitecard { padding: 14px; display: block; text-align: left; width: 100%; border: 1px solid var(--border); background: var(--card); border-radius: 12px; box-shadow: var(--shadow); }
.sitecard:hover { border-color: var(--axis); }
.sitecard .name { display: flex; align-items: center; gap: 8px; font-weight: 620; margin-bottom: 2px; }
.sitecard .host { color: var(--muted); font-size: 11.5px; }
.sitecard .figs { display: flex; gap: 16px; margin: 10px 0 8px; }
.sitecard .figs .n { font-size: 20px; font-weight: 680; letter-spacing: -.01em; }
.sitecard .figs .k { font-size: 11px; color: var(--muted); }

/* tables / bar lists */
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th { text-align: left; font-weight: 500; color: var(--muted); font-size: 11.5px; padding: 6px 8px; border-bottom: 1px solid var(--border); }
table.data td { padding: 7px 8px; border-bottom: 1px solid var(--border-2); vertical-align: middle; }
table.data tr:hover td { background: color-mix(in srgb, var(--series-1) 5%, transparent); }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink-2); white-space: nowrap; }
.barcell { position: relative; }
.barcell .bar { position: absolute; inset: 0 auto 0 0; border-radius: 4px; background: color-mix(in srgb, var(--series-1) 16%, transparent); z-index: 0; }
.barcell .lbl { position: relative; z-index: 1; display: block; padding: 2px 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 46ch; }
.flag { font-size: 14px; margin-right: 6px; }

.pill { font-size: 11px; padding: 1px 7px; border-radius: 999px; border: 1px solid var(--border); color: var(--ink-2); }
.tag-bot { color: var(--warning); border-color: color-mix(in srgb, var(--warning) 45%, var(--border)); }
.tag-log { color: var(--muted); }
.tag-live { color: var(--good-ink); border-color: color-mix(in srgb, var(--good) 40%, var(--border)); }
.approx { color: var(--muted); }

/* punch-card: sessions by weekday × hour */
.punchgrid { display: grid; grid-template-columns: 36px repeat(24, 1fr); gap: 3px; align-items: center; min-width: 620px; }
.punchgrid .pc-h { font-size: 10px; color: var(--muted); text-align: center; font-variant-numeric: tabular-nums; }
.punchgrid .pc-d { font-size: 11px; color: var(--muted); padding-right: 8px; text-align: right; }
.punchgrid .pc-c { height: 15px; border-radius: 3px; background: var(--surface-1); border: 1px solid var(--border-2); }
.punchgrid .pc-c[data-n]:hover { outline: 1.5px solid var(--axis); outline-offset: -1px; }

/* load-more button */
.loadmore { display: block; margin: 14px auto 0; padding: 8px 22px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface-1); color: var(--ink-2); }
.loadmore:hover { border-color: var(--axis); color: var(--ink); }

/* charts */
.chartwrap { position: relative; }
svg.chart { display: block; width: 100%; overflow: visible; }
svg.chart .grid line { stroke: var(--grid); stroke-width: 1; shape-rendering: crispEdges; }
svg.chart .axis text { fill: var(--muted); font-size: 10.5px; }
svg.chart .area { fill: color-mix(in srgb, var(--series-1) 14%, transparent); }
svg.chart .line { fill: none; stroke: var(--series-1); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
svg.chart .cross { stroke: var(--axis); stroke-width: 1; stroke-dasharray: 3 3; }
svg.chart .dot { fill: var(--series-1); stroke: var(--surface-1); stroke-width: 2; }
.tooltip {
  position: fixed; pointer-events: none; z-index: 60; opacity: 0; transition: opacity .08s;
  background: var(--ink); color: var(--surface-1); padding: 6px 9px; border-radius: 7px;
  font-size: 12px; box-shadow: var(--shadow); white-space: nowrap;
}
.tooltip b { font-variant-numeric: tabular-nums; }
.spark { display: block; width: 100%; height: 34px; }

/* map */
.mapwrap { position: relative; width: 100%; background: var(--surface-1); border-radius: 10px; overflow: hidden; }
svg.worldmap { display: block; width: 100%; height: auto; }
svg.worldmap path.land { fill: color-mix(in srgb, var(--ink) 8%, var(--surface-1)); stroke: var(--border); stroke-width: .5; }
svg.worldmap circle.city { fill: color-mix(in srgb, var(--series-1) 70%, transparent); stroke: var(--surface-1); stroke-width: .4; }
svg.worldmap circle.city:hover { fill: var(--series-1); }
.legend { display: flex; gap: 14px; align-items: center; font-size: 11.5px; color: var(--muted); margin-top: 8px; flex-wrap: wrap; }
.legend .k { display: inline-flex; align-items: center; gap: 5px; }
.legend .k i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

/* heatmap */
.heatstage { position: relative; background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px; overflow: auto; max-height: 620px; }
.heatstage canvas { display: block; }
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
select, input[type=text] { font: inherit; padding: 6px 9px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-1); color: var(--ink); }

/* session trail */
.trail { border: 1px solid var(--border); border-radius: 8px; background: var(--surface-1); }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--border-2); }
.timeline .t { color: var(--muted); font-size: 12px; width: 62px; flex: none; font-variant-numeric: tabular-nums; }
.timeline .p { flex: 1; }

.empty { color: var(--muted); text-align: center; padding: 40px 10px; }
.err { color: var(--critical); }
.row { display: flex; gap: 10px; align-items: center; }
.wrap { flex-wrap: wrap; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
.backbtn { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-2); background: none; border: 0; padding: 4px 0; margin-bottom: 8px; }