:root {
  --bg: #f4f6f9; --card: #ffffff; --text: #1b2430; --muted: #66717f; --line: #e2e6ec; --grid: #e9edf2;
  --accent: #1f4e8c; --accent-soft: #e6eef8; --bad: #b42318; --bad-soft: #fdecea; --warn: #9a6700; --warn-soft: #fff4d6;
  --series: #1f77b4, #e8730c, #2a9d4b, #c43c3c, #7b55c7, #8c5a3c, #d0559c, #6b7a8a, #17a2b8, #b5a00e;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161c; --card: #1b2129; --text: #e3e8ee; --muted: #93a0ae; --line: #2c3440; --grid: #262d37;
    --accent: #7fb0ec; --accent-soft: #1f2e42; --bad: #ff8a80; --bad-soft: #3a1e1e; --warn: #f2c14e; --warn-soft: #3a3018;
    --series: #5aa9e6, #f39a4a, #5cc27a, #ee6b6b, #a38ae6, #c08a66, #ec84bd, #9aa8b8, #4fc6d9, #d9c84a;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
h1 { font-size: 18px; margin: 0; }
h2 { font-size: 15px; margin: 0 0 10px; }
button { font: inherit; color: var(--text); background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 5px 10px; cursor: pointer; }
button:hover { border-color: var(--accent); }
button.on { background: var(--accent); border-color: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) { button.on { color: #10151b; } }
button.link { border: 0; background: none; color: var(--accent); padding: 2px 4px; }
input { font: inherit; color: var(--text); background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 4px 8px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.center { text-align: center; }
.bad { color: var(--bad); }
.warn { color: var(--warn); }

.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--line); }
.top .user { display: flex; align-items: center; gap: 6px; }
main { max-width: 1280px; margin: 0 auto; padding: 16px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }

.filters { display: grid; gap: 10px; }
.presets, .dates, .stations, .tabs, .card-tools { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.dates label { display: flex; gap: 6px; align-items: center; color: var(--muted); }
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border: 1px solid var(--line); border-radius: 999px; background: var(--card); cursor: pointer; user-select: none; }
.chip input { display: none; }
.chip.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; }
.kpi-l { color: var(--muted); font-size: 12px; }
.kpi-v { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; }
.kpi.bad .kpi-v { color: var(--bad); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 14px; min-width: 0; }
.card-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-bottom: 10px; }
.chk { display: inline-flex; gap: 4px; align-items: center; color: var(--muted); }
.chart-wrap { position: relative; height: 300px; }

.alerts { margin: 0; padding-left: 18px; display: grid; gap: 3px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 6px 10px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { font-weight: 600; color: var(--muted); font-size: 12px; background: var(--card); position: sticky; top: 0; }
th.sortable { cursor: pointer; }
th.sortable:hover { color: var(--accent); }
.num { text-align: right; }
tbody tr:hover td { background: var(--accent-soft); }
tfoot td { font-weight: 600; border-top: 2px solid var(--line); border-bottom: 0; }
.tag { display: inline-block; padding: 0 6px; border-radius: 4px; font-size: 12px; }
.tag.spike { background: var(--warn-soft); color: var(--warn); }
.tag.reboots { background: var(--bad-soft); color: var(--bad); }
.alert { background: var(--bad-soft); color: var(--bad); padding: 8px 10px; border-radius: 6px; }

.login-page { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 340px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 24px; display: grid; gap: 12px; }
.login-card p { margin: -6px 0 4px; }
.login-card label { display: grid; gap: 4px; color: var(--muted); }
.login-card button { background: var(--accent); border-color: var(--accent); color: #fff; padding: 8px; }

@media (max-width: 600px) {
  main { padding: 12px; }
  .top { padding: 10px 12px; }
  h1 { font-size: 16px; }
  .chart-wrap { height: 240px; }
  .kpi-v { font-size: 18px; }
}