:root {
  color-scheme: light;
  --page: #f9f9f7; --surface: #fcfcfb; --surface-2: #f0efec;
  --text: #0b0b0b; --text-2: #52514e; --muted: #898781;
  --grid: #e1e0d9; --axis: #c3c2b7; --border: rgba(11,11,11,0.10);
  --accent: #2a78d6; --series-1: #2a78d6; --series-2: #eb6834;
  --good: #006300; --bad: #d03b3b; --warn-bg: #fff4dc;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d; --surface: #1a1a19; --surface-2: #262624;
    --text: #ffffff; --text-2: #c3c2b7; --muted: #898781;
    --grid: #2c2c2a; --axis: #383835; --border: rgba(255,255,255,0.10);
    --accent: #3987e5; --series-1: #3987e5; --series-2: #d95926;
    --good: #0ca30c; --bad: #e66767; --warn-bg: #3a2f14;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
header.top { display: flex; align-items: center; gap: 24px; padding: 12px 24px;
  background: var(--surface); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
header.top .brand { font-weight: 650; }
header.top nav { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
header.top nav a { color: var(--text-2); text-decoration: none; padding: 6px 12px; border-radius: 8px; }
header.top nav a.active, header.top nav a:hover { background: var(--surface-2); color: var(--text); }
main { max-width: 1200px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 32px 0 12px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; }
.grid { display: grid; gap: 12px; }
.tiles { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.charts { grid-template-columns: repeat(auto-fill, minmax(min(100%, 360px), 1fr)); }
.tile .lbl { color: var(--text-2); font-size: 13px; }
.tile .val { font-size: 28px; font-weight: 600; margin: 2px 0; }
.tile .val small { font-size: 14px; font-weight: 400; color: var(--text-2); margin-left: 4px; }
.tile .sub { color: var(--muted); font-size: 12px; }
.delta { font-size: 13px; color: var(--text-2); }
.delta.good { color: var(--good); } .delta.bad { color: var(--bad); }
.chart-card h3 { margin: 0 0 8px; font-size: 14px; font-weight: 600; color: var(--text-2); }
.chart-card .box { position: relative; height: 200px; }
.chart-card .empty { color: var(--muted); font-size: 13px; padding: 70px 0; text-align: center; }
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; background: var(--surface); color: var(--text-2); padding: 6px 12px; cursor: pointer; font: inherit; }
.seg button.on { background: var(--surface-2); color: var(--text); font-weight: 600; }
form.inline { display: inline; }
.btn { display: inline-block; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 7px 14px; border-radius: 8px; cursor: pointer; font: inherit; text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.small { padding: 3px 9px; font-size: 13px; }
.btn.danger { color: var(--bad); }
input, select, textarea { font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--axis); border-radius: 8px; padding: 7px 10px; width: 100%; }
label { display: block; font-size: 13px; color: var(--text-2); }
.form-grid { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); align-items: end; }
.form-grid .wide { grid-column: span 2; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--grid); }
th { color: var(--text-2); font-weight: 500; font-size: 13px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; border: 1px solid var(--border); background: var(--surface); }
.flash.error { border-color: var(--bad); color: var(--bad); }
.notice { background: var(--warn-bg); border-radius: 12px; padding: 14px 16px; margin-bottom: 16px; }
.muted { color: var(--muted); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chips button { border: 1px solid var(--border); background: var(--surface); color: var(--text-2);
  border-radius: 999px; padding: 3px 10px; font-size: 13px; cursor: pointer; }
.login { max-width: 360px; margin: 12vh auto; }
code { background: var(--surface-2); padding: 1px 5px; border-radius: 4px; font-size: 13px; }
@media (max-width: 600px) {
  .form-grid .wide { grid-column: 1 / -1; }
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile .val { font-size: 22px; }
  header.top { padding: 10px 16px; gap: 8px 16px; }
  header.top nav { order: 3; flex-basis: 100%; flex-wrap: nowrap; overflow-x: auto; }
  header.top nav a { white-space: nowrap; }
}
header.top > a.muted { margin-left: auto; }