:root {
  --bg: #f6f7f9; --panel: #ffffff; --text: #1d2330; --muted: #667085; --line: #e3e6eb;
  --accent: #2f6fed; --pos: #12805c; --neg: #c4320a; --warn: #b54708; --bad: #b42318;
  --ok-bg: #e6f4ee; --bad-bg: #fdecea; --warn-bg: #fef4e6; --neutral-bg: #eef1f5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11151c; --panel: #1a1f29; --text: #e6e8ec; --muted: #98a2b3; --line: #2b3240;
    --accent: #6d9bff; --pos: #4fd1a1; --neg: #ff8a65; --warn: #f5b25c; --bad: #ff6b5e;
    --ok-bg: #133a2c; --bad-bg: #3d1916; --warn-bg: #3a2a12; --neutral-bg: #252c38;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 1280px; margin: 0 auto; padding: 16px; }
h1 { font-size: 22px; margin: 8px 0 12px; } h2 { font-size: 17px; margin: 0 0 10px; } h3 { font-size: 15px; }
code { font: 13px ui-monospace, SFMono-Regular, Consolas, monospace; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: 13px; }
.topbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; padding: 10px 16px;
  background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 4px; flex: 1; }
.topbar nav a { padding: 6px 10px; border-radius: 6px; text-decoration: none; color: var(--text); }
.topbar nav a.active, .topbar nav a:hover { background: var(--neutral-bg); }
.logout { display: flex; align-items: center; gap: 8px; margin: 0; }
footer { max-width: 1280px; margin: 0 auto; padding: 8px 16px 24px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin: 0 0 16px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.stat .label { color: var(--muted); font-size: 13px; } .stat .value { font-size: 22px; font-weight: 650; margin: 2px 0; }
.stat .sub { color: var(--muted); font-size: 13px; }
.pos { color: var(--pos); } .neg { color: var(--neg); } .warn-text { color: var(--warn); font-size: 13px; }
.status { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 6px; }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 13px; font-weight: 600; }
.pill.ok { background: var(--ok-bg); color: var(--pos); } .pill.off, .pill.neutral { background: var(--neutral-bg); color: var(--text); }
.pill.bad { background: var(--bad-bg); color: var(--bad); } .pill.warn { background: var(--warn-bg); color: var(--warn); }
.note { background: var(--warn-bg); color: var(--warn); padding: 8px 12px; border-radius: 8px; margin: 0 0 16px; }
.note.ok { background: var(--ok-bg); color: var(--pos); }
.alert { background: var(--bad-bg); color: var(--bad); padding: 8px 12px; border-radius: 8px; }
.flash { background: var(--ok-bg); color: var(--pos); padding: 8px 12px; border-radius: 8px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: top; white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.wrap { white-space: normal; min-width: 240px; }
.chart { width: 100%; height: auto; display: block; }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 2; vector-effect: non-scaling-stroke; }
.chart .area { fill: var(--accent); opacity: 0.12; }
.chart .baseline { stroke: var(--muted); stroke-dasharray: 4 4; vector-effect: non-scaling-stroke; }
.axis { display: flex; justify-content: space-between; gap: 8px; color: var(--muted); font-size: 12px; flex-wrap: wrap; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0 0 12px; }
.kv dt { color: var(--muted); } .kv dd { margin: 0; }
.login { max-width: 380px; margin: 48px auto; }
form label { display: block; margin: 10px 0; font-size: 14px; }
input { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px; }
button { font: inherit; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--accent); color: #fff; cursor: pointer; font-weight: 600; }
button:disabled { opacity: 0.45; cursor: not-allowed; }
button.link { background: none; border: none; color: var(--accent); padding: 0; font-weight: 500; }
button.danger { background: var(--bad); }
.controls form { display: inline-block; margin: 0 8px 8px 0; }
.controls form.exit-form { display: block; max-width: 420px; }
.danger-zone { border-color: var(--bad); }
.pager { display: flex; gap: 16px; align-items: center; margin: 12px 0; }
hr { border: none; border-top: 1px solid var(--line); margin: 14px 0; }
@media (max-width: 640px) {
  main { padding: 12px; } .stat .value { font-size: 19px; }
  .brand { width: 100%; } .topbar { gap: 6px 12px; }
}