:root {
  --bg: #f6f7f9; --card: #ffffff; --ink: #1b1f24; --muted: #667085; --line: #e3e6ea;
  --accent: #1f6feb; --ok: #1a7f37; --warn: #b54708; --bad: #c62828;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1216; --card: #171b21; --ink: #e6e9ed; --muted: #98a2b3; --line: #2a3038;
          --accent: #58a6ff; --ok: #3fb950; --warn: #d29922; --bad: #f47067; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink);
       font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
main { max-width: 1200px; margin: 0 auto; padding: 20px 16px 48px; }
#hdr { display: flex; align-items: center; gap: 16px; padding: 12px 16px; background: var(--card);
       border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
#hdr .brand { font-weight: 700; letter-spacing: .04em; color: var(--ink); }
#hdr nav { flex: 1; color: var(--muted); }
button { font: inherit; padding: 9px 16px; border-radius: 8px; border: 1px solid var(--accent);
         background: var(--accent); color: #fff; cursor: pointer; }
button.link { background: none; border: none; color: var(--accent); padding: 4px; }
button.small { padding: 4px 10px; font-size: 13px; }
button.ghost { background: none; color: var(--accent); }
input, select { font: inherit; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px;
                background: var(--card); color: var(--ink); width: 100%; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.login { max-width: 380px; margin: 12vh auto 0; }
.login h1 { margin: 0 0 4px; font-size: 22px; }
.login p { color: var(--muted); margin: 0 0 18px; }
.login label { display: block; margin: 12px 0 4px; font-size: 13px; color: var(--muted); }
.login button { width: 100%; margin-top: 18px; }
.err { color: var(--bad); min-height: 1.4em; margin-top: 10px; font-size: 14px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.tile { display: block; padding: 22px; border-radius: 12px; background: var(--card); border: 1px solid var(--line);
        color: var(--ink); }
.tile h2 { margin: 0 0 6px; font-size: 20px; }
.tile p { margin: 0; color: var(--muted); }
.tile.off { opacity: .55; pointer-events: none; }
h1.page { font-size: 24px; margin: 4px 0 16px; }
.muted { color: var(--muted); }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
td.num { font-variant-numeric: tabular-nums; }
.pill { display: inline-block; padding: 1px 9px; border-radius: 999px; font-size: 12px; font-weight: 600;
        border: 1px solid currentColor; }
.pill.ok { color: var(--ok); } .pill.warn { color: var(--warn); } .pill.bad { color: var(--bad); }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.stat .k { font-size: 12px; color: var(--muted); }
.stat .v { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; }
.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 520px), 1fr)); gap: 16px; }
.chart { height: 280px; position: relative; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin: 18px 0 10px; }
.row h2 { margin: 0; font-size: 18px; flex: 1; }
.row select, .row input { width: auto; }
details { margin: 8px 0; }
summary { cursor: pointer; font-weight: 600; padding: 6px 0; }
pre.log { max-height: 480px; overflow: auto; background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
          padding: 10px; font-size: 12px; line-height: 1.35; white-space: pre; }