: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);
  --hover: rgba(11, 11, 11, 0.04);
  --accent: #2a78d6;
  --accent-ink: #1c5cab;
  --series-1: #2a78d6;
  --track: #cde2fb;
  --good: #0ca30c;
  --good-ink: #006300;
  --critical: #d03b3b;
  --warn-bg: #fdf1d3;
  --ok-bg: #e3f4e3;
  --err-bg: #fbe4e4;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --hover: rgba(255, 255, 255, 0.05);
    --accent: #3987e5;
    --accent-ink: #86b6ef;
    --series-1: #3987e5;
    --track: #184f95;
    --good-ink: #0ca30c;
    --critical: #e66767;
    --warn-bg: #3a2f10;
    --ok-bg: #12301a;
    --err-bg: #3a1717;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--page); color: var(--ink);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 20px; margin: 0 0 16px; }
h2 { font-size: 15px; margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.num { font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }

/* layout */
.shell { display: flex; min-height: 100vh; }
.nav {
  width: 208px; flex: none; padding: 16px 12px; background: var(--surface);
  border-right: 1px solid var(--border); display: flex; flex-direction: column; gap: 2px;
}
.nav .brand { font-weight: 600; padding: 4px 10px 14px; }
.nav a { display: flex; justify-content: space-between; padding: 7px 10px; border-radius: 6px; color: var(--ink-2); }
.nav a:hover { background: var(--hover); text-decoration: none; }
.nav a.on { background: var(--hover); color: var(--ink); font-weight: 600; }
.nav .who { margin-top: auto; padding: 12px 10px 0; border-top: 1px solid var(--border); }
.main { flex: 1; min-width: 0; padding: 24px 28px 48px; max-width: 1280px; }
@media (max-width: 760px) {
  .shell { flex-direction: column; }
  .nav { width: auto; flex-direction: row; flex-wrap: wrap; align-items: center; border-right: 0; border-bottom: 1px solid var(--border); }
  .nav .brand { padding: 4px 10px; }
  .nav .who { margin: 0 0 0 auto; padding: 0 10px; border: 0; display: flex; gap: 10px; align-items: center; }
  .main { padding: 16px; }
}

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.grid { display: grid; gap: 12px; }
.tiles { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); margin-bottom: 12px; }
.cols-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); margin-bottom: 12px; }
.cols-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.stack > * + * { margin-top: 12px; }

/* stat tiles */
.tile .label { color: var(--ink-2); font-size: 13px; }
.tile .value { font-size: 28px; font-weight: 600; line-height: 1.2; margin-top: 2px; }
.tile .sub { color: var(--muted); font-size: 12px; margin-top: 2px; }

/* charts */
.chart-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 6px; }
.chart-head .total { color: var(--ink-2); font-size: 13px; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .baseline { stroke: var(--axis); stroke-width: 1; }
.chart .bar { fill: var(--series-1); }
.chart .hit { fill: transparent; }
.chart .hit:hover { fill: var(--hover); }
.chart text { fill: var(--muted); font-size: 10px; font-variant-numeric: tabular-nums; }
.tip {
  position: fixed; z-index: 10; pointer-events: none; padding: 5px 8px; border-radius: 6px;
  background: var(--ink); color: var(--page); font-size: 12px; white-space: nowrap; display: none;
}
.tip b { font-weight: 600; }
.meter { height: 8px; border-radius: 4px; background: var(--track); overflow: hidden; min-width: 80px; }
.meter i { display: block; height: 100%; background: var(--series-1); border-radius: 4px; }

/* tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--ink-2); font-weight: 500; font-size: 12px; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--hover); }
td.r, th.r { text-align: right; }
.empty { padding: 28px; text-align: center; color: var(--muted); }

/* controls */
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 12px; }
.tabs { display: flex; gap: 2px; background: var(--hover); border-radius: 8px; padding: 2px; }
.tabs a { padding: 5px 12px; border-radius: 6px; color: var(--ink-2); }
.tabs a.on { background: var(--surface); color: var(--ink); box-shadow: 0 0 0 1px var(--border); }
.tabs a:hover { text-decoration: none; }
input[type=text], input[type=password], input[type=search] {
  font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--axis);
  border-radius: 6px; padding: 6px 9px; min-width: 0;
}
input:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
label { display: block; font-size: 12px; color: var(--ink-2); margin-bottom: 3px; }
.field { margin-bottom: 10px; }
.field input { width: 100%; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; }
.row .field { margin: 0; flex: 1 1 160px; }
button, .btn {
  font: inherit; cursor: pointer; border-radius: 6px; padding: 6px 12px; border: 1px solid var(--axis);
  background: var(--surface); color: var(--ink); white-space: nowrap; display: inline-block;
}
button:hover, .btn:hover { background: var(--hover); text-decoration: none; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: var(--critical); border-color: var(--critical); }
button.sm { padding: 3px 8px; font-size: 12px; }
button.link { border: 0; background: none; padding: 0; color: var(--accent-ink); }
form.inline { display: inline; }
.actions { display: flex; gap: 6px; justify-content: flex-end; flex-wrap: wrap; }
details > summary { cursor: pointer; color: var(--accent-ink); }
details[open] > summary { margin-bottom: 10px; }

.badge { display: inline-block; padding: 1px 7px; border-radius: 10px; font-size: 11px; font-weight: 600; border: 1px solid var(--border); color: var(--ink-2); white-space: nowrap; }
.badge.bad { color: var(--critical); border-color: var(--critical); }
.badge.good { color: var(--good-ink); border-color: var(--good); }
.badge.count { background: var(--critical); border-color: var(--critical); color: #fff; }

.flash { padding: 9px 12px; border-radius: 8px; margin-bottom: 12px; background: var(--ok-bg); }
.flash.error { background: var(--err-bg); }
.flash.warn { background: var(--warn-bg); }

.pager { display: flex; gap: 8px; align-items: center; justify-content: flex-end; margin-top: 12px; }

/* user card */
.avatar { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; background: var(--grid); flex: none; }
.person { display: flex; gap: 10px; align-items: center; min-width: 0; }
.person .name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.profile { display: flex; gap: 16px; flex-wrap: wrap; }
.profile img.photo { width: 180px; height: 220px; object-fit: cover; border-radius: 8px; background: var(--grid); }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 0; }
dl.facts dt { color: var(--ink-2); }
dl.facts dd { margin: 0; overflow-wrap: anywhere; }

/* chat */
.chat { display: flex; flex-direction: column; gap: 8px; }
.msg { max-width: min(560px, 85%); padding: 7px 10px; border-radius: 10px; background: var(--hover); border: 1px solid var(--border); }
.msg.a { align-self: flex-start; }
.msg.b { align-self: flex-end; background: var(--track); border-color: transparent; }
.msg .meta { display: flex; gap: 8px; align-items: baseline; font-size: 11px; color: var(--ink-2); }
.msg .meta button.link { color: inherit; text-decoration: underline; }
.msg .text { white-space: pre-wrap; overflow-wrap: anywhere; }
.msg img, .msg video { display: block; max-width: 260px; max-height: 320px; border-radius: 6px; margin: 4px 0; }
.msg audio { display: block; margin: 4px 0; max-width: 100%; }

/* login */
.login { max-width: 340px; margin: 12vh auto 0; padding: 0 16px; }