:root {
  color-scheme: light dark;
  --bg: #f7f7f5;
  --card: #ffffff;
  --ink: #16171a;
  --muted: #6b6f78;
  --line: #e4e5e8;
  --accent: #5b4bf0;
  --good: #1f8a4c;
  --bad: #c2412d;
  --radius: 12px;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111214;
    --card: #1a1b1f;
    --ink: #eceef2;
    --muted: #9a9ea8;
    --line: #2a2c31;
    --accent: #9d93ff;
    --good: #4cc27d;
    --bad: #ff7a64;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 24px; border-bottom: 1px solid var(--line); background: var(--card); position: sticky; top: 0; z-index: 1; }
.brand { font-weight: 700; font-size: 18px; color: var(--ink); letter-spacing: -0.02em; }
.top nav { display: flex; gap: 18px; align-items: center; }
main { max-width: 1100px; margin: 0 auto; padding: 24px; }

h1 { font-size: 24px; margin: 0 0 4px; letter-spacing: -0.02em; }
h2 { font-size: 15px; margin: 0 0 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.sub { color: var(--muted); margin: 0 0 20px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 16px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.kpis { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); margin-bottom: 16px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.kpi .label { color: var(--muted); font-size: 13px; }
.kpi .value { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.delta { font-size: 13px; font-weight: 600; }
.delta.up { color: var(--good); }
.delta.down { color: var(--bad); }
.delta.flat { color: var(--muted); }

table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
td.num, th.num { text-align: right; }
tr:last-child td { border-bottom: 0; }
.tag { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.tag.warn { color: var(--bad); border-color: currentColor; }
.tag.open { color: var(--accent); border-color: currentColor; }

.controls { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
select, input, textarea, button { font: inherit; color: inherit; }
select, input, textarea { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; }
textarea { width: 100%; min-height: 110px; resize: vertical; }
button { background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 8px 14px; font-weight: 600; cursor: pointer; }
button.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); }
button.link { background: none; color: var(--accent); padding: 0; font-weight: 500; }
button:disabled { opacity: 0.5; cursor: default; }

.bars { display: flex; align-items: flex-end; gap: 3px; height: 140px; padding-top: 8px; }
.bar { flex: 1; background: var(--accent); border-radius: 3px 3px 0 0; min-height: 1px; opacity: 0.85; }
.bar:hover { opacity: 1; }
.axis { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; margin-top: 6px; }

.thread { display: grid; gap: 10px; }
.msg { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
.msg.support { border-color: var(--accent); }
.msg .meta { color: var(--muted); font-size: 12px; margin-bottom: 6px; white-space: normal; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 0; font-size: 14px; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; overflow-wrap: anywhere; }

.login { max-width: 380px; margin: 12vh auto; }
.login form { display: grid; gap: 12px; }
.error { color: var(--bad); }
.empty { color: var(--muted); padding: 12px 0; }
.demo-banner { background: #5b4bf0; color: #fff; text-align: center; padding: 8px 16px; font-size: 14px; font-weight: 600; }
.demo-banner a { color: #fff; text-decoration: underline; }