:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --series: #2a78d6;
  --series-wash: rgba(42, 120, 214, 0.10);
  --track: #cde2fb;
  --good: #0ca30c;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --good-text: #006300;
  --link: #1c5cab;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --series: #3987e5;
    --series-wash: rgba(57, 135, 229, 0.12);
    --track: rgba(57, 135, 229, 0.20);
    --good-text: #0ca30c;
    --link: #86b6ef;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --series: #3987e5;
  --series-wash: rgba(57, 135, 229, 0.12);
  --track: rgba(57, 135, 229, 0.20);
  --good-text: #0ca30c;
  --link: #86b6ef;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; font-weight: 600; }
h1 { font-size: 22px; }
h2 { font-size: 16px; }
h3 { font-size: 14px; }
.muted { color: var(--muted); }
.ink2 { color: var(--ink-2); }
.error { color: var(--critical); min-height: 1.5em; margin: 4px 0; }
button {
  font: inherit; cursor: pointer; border-radius: 8px; padding: 8px 14px;
  border: 1px solid var(--series); background: var(--series); color: #fff;
}
button.ghost { background: transparent; color: var(--ink-2); border-color: var(--border); padding: 4px 10px; }
button:focus-visible, a:focus-visible, input:focus-visible, summary:focus-visible { outline: 2px solid var(--series); outline-offset: 2px; }
[hidden] { display: none !important; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(380px, 100%); background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 24px; display: grid; gap: 8px; }
.login-card input { font: inherit; padding: 8px 10px; border-radius: 8px; border: 1px solid var(--axis); background: var(--page); color: var(--ink); }

.topbar {
  position: sticky; top: 0; z-index: 5; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px;
  padding: 12px 24px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { display: flex; gap: 8px; align-items: baseline; }
.topbar nav { display: flex; gap: 16px; }
.topbar nav a { color: var(--ink-2); padding: 4px 0; border-bottom: 2px solid transparent; }
.topbar nav a.active { color: var(--ink); border-bottom-color: var(--series); text-decoration: none; }
.status { margin-left: auto; display: flex; gap: 8px; align-items: center; font-size: 12px; }

main { max-width: 1200px; margin: 0 auto; padding: 24px; display: grid; gap: 16px; transition: opacity .2s; }
main.refetching { opacity: .6; }
.grid { display: grid; gap: 16px; }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.tiles { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; min-width: 0; }
.card-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 4px 12px; margin-bottom: 12px; }
.card-head h2 { white-space: nowrap; }
.card-head p { margin: 0; font-size: 12px; }
.tile .label { color: var(--ink-2); font-size: 12px; }
.tile .value { font-size: 28px; font-weight: 600; line-height: 1.2; margin-top: 4px; }
.tile .sub { color: var(--muted); font-size: 12px; }
.page-head { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: baseline; }
.empty { color: var(--muted); padding: 8px 0; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; font-weight: 500; color: var(--ink-2); border-bottom: 1px solid var(--axis); padding: 6px 8px; white-space: nowrap; }
td { border-bottom: 1px solid var(--grid); padding: 8px; vertical-align: top; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.badge .dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.badge .ico { font-size: 11px; font-weight: 700; width: 14px; text-align: center; }
.chip { display: inline-block; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); font-size: 12px; color: var(--ink-2); white-space: nowrap; }

.meter { display: grid; gap: 2px; min-width: 120px; }
.meter .bar { height: 6px; border-radius: 3px; background: var(--track); overflow: hidden; }
.meter .fill { height: 100%; border-radius: 3px; background: var(--series); }
.meter .txt { font-size: 12px; font-variant-numeric: tabular-nums; }

.alerts { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.alerts li { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; align-items: start; }
.alerts .detail { color: var(--ink-2); font-size: 13px; }

.chart { width: 100%; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { fill: var(--ink-2); font-size: 11px; }
.chart .tick text { fill: var(--muted); }
.chart .grid line { stroke: var(--grid); stroke-width: 1; }
.chart .baseline { stroke: var(--axis); stroke-width: 1; }
.chart .mark { fill: var(--series); }
.chart .mark.hover { filter: brightness(1.15); }
.chart .line { fill: none; stroke: var(--series); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .area { fill: var(--series-wash); }
.chart .dot { fill: var(--series); stroke: var(--surface); stroke-width: 2; }
.chart .crosshair { stroke: var(--axis); stroke-width: 1; }
.chart .value-label { fill: var(--ink); font-size: 12px; font-variant-numeric: tabular-nums; }
.chart .hit { fill: transparent; }

details.table-view { margin-top: 8px; font-size: 12px; }
details.table-view summary { color: var(--muted); cursor: pointer; }

.tooltip {
  position: fixed; z-index: 20; pointer-events: none; background: var(--surface); color: var(--ink);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; font-size: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}
.tooltip .v { font-weight: 600; font-size: 13px; font-variant-numeric: tabular-nums; }
.tooltip .k { color: var(--ink-2); }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; font-size: 13px; }
.kv dt { color: var(--ink-2); }
.kv dd { margin: 0; white-space: pre-wrap; }

@media (max-width: 760px) {
  main { padding: 16px; }
  .topbar { padding: 12px 16px; }
  .cols-2 { grid-template-columns: 1fr; }
  .status { margin-left: 0; }
  .table-wrap table { min-width: 640px; }
  .table-wrap td:first-child { min-width: 140px; }
}