:root {
  --bg: #f4f6f9; --panel: #ffffff; --line: #dfe4ec; --text: #1a2233; --muted: #64708a;
  --accent: #1f5eff; --accent-soft: #e8efff; --ok: #1d9a5b; --ok-soft: #e3f6ec;
  --bad: #d13b3b; --bad-soft: #fdeaea; --warn: #b7791f; --warn-soft: #fff4dc;
  --buy: #1d9a5b; --sell: #d13b3b; --mono: ui-monospace, "Cascadia Mono", Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1420; --panel: #171e2e; --line: #273049; --text: #e6eaf2; --muted: #93a0b8;
    --accent: #6d95ff; --accent-soft: #1d2a4d; --ok: #3ccf83; --ok-soft: #123a27;
    --bad: #ff6b6b; --bad-soft: #43201f; --warn: #f0b24a; --warn-soft: #3d2f12;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--accent); }
.layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
nav { background: var(--panel); border-right: 1px solid var(--line); padding: 18px 12px; position: sticky; top: 0; height: 100vh; overflow: auto; }
nav .brand { font-weight: 700; font-size: 16px; letter-spacing: .3px; padding: 4px 8px 14px; }
nav .brand small { display: block; font-weight: 400; color: var(--muted); font-size: 11px; }
nav a { display: block; padding: 8px 10px; border-radius: 8px; color: var(--text); text-decoration: none; margin-bottom: 2px; }
nav a:hover { background: var(--accent-soft); }
nav a.active { background: var(--accent); color: #fff; }
nav .sec { font-size: 11px; text-transform: uppercase; color: var(--muted); padding: 12px 10px 4px; letter-spacing: .6px; }
main { padding: 22px 28px 60px; max-width: 1300px; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 0 0 10px; }
.sub { color: var(--muted); margin: 0 0 18px; }
.grid { display: grid; gap: 14px; }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1000px) { .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; } .layout { grid-template-columns: 1fr; } nav { position: static; height: auto; } }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.kpi .v { font-size: 24px; font-weight: 700; }
.kpi .l { color: var(--muted); font-size: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; }
tr.click:hover { background: var(--accent-soft); cursor: pointer; }
.tbl-wrap { overflow-x: auto; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.mono { font-family: var(--mono); font-size: 12px; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; white-space: nowrap; }
.b-ok { background: var(--ok-soft); color: var(--ok); }
.b-bad { background: var(--bad-soft); color: var(--bad); }
.b-warn { background: var(--warn-soft); color: var(--warn); }
.b-info { background: var(--accent-soft); color: var(--accent); }
.b-muted { background: var(--line); color: var(--muted); }
.side-BUY { color: var(--buy); font-weight: 700; }
.side-SELL { color: var(--sell); font-weight: 700; }
form.f { display: grid; gap: 10px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
form.f .full { grid-column: 1 / -1; }
label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 3px; }
input, select, textarea { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); font: inherit; }
textarea { min-height: 60px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
button { padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line); background: var(--panel); color: var(--text); font: inherit; cursor: pointer; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.buy { background: var(--buy); border-color: var(--buy); color: #fff; }
button.sell { background: var(--sell); border-color: var(--sell); color: #fff; }
button.danger { color: var(--bad); border-color: var(--bad); }
button.sm { padding: 4px 9px; font-size: 12px; }
button:disabled { opacity: .5; cursor: not-allowed; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.right { margin-left: auto; }
.gate { display: flex; gap: 10px; padding: 8px 10px; border-radius: 8px; margin-bottom: 6px; border: 1px solid var(--line); }
.gate.ok { background: var(--ok-soft); border-color: transparent; }
.gate.bad { background: var(--bad-soft); border-color: transparent; }
.gate .g { font-family: var(--mono); font-size: 12px; min-width: 190px; font-weight: 700; }
.gate .r { font-size: 13px; }
.bar { height: 8px; background: var(--line); border-radius: 4px; overflow: hidden; margin-top: 4px; }
.bar > div { height: 100%; background: var(--accent); }
.bar.over > div { background: var(--bad); }
.stamp { font-family: var(--mono); font-size: 12px; padding: 6px 10px; border: 1px dashed var(--warn); color: var(--warn); border-radius: 8px; display: inline-block; }
.toast { position: fixed; right: 20px; bottom: 20px; background: var(--text); color: var(--bg); padding: 10px 14px; border-radius: 10px; max-width: 420px; z-index: 50; box-shadow: 0 6px 24px rgba(0,0,0,.25); white-space: pre-wrap; }
.toast.err { background: var(--bad); color: #fff; }
pre.json { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px; overflow: auto; font-size: 12px; max-height: 400px; white-space: pre-wrap; word-break: break-word; }
.chair { border-left: 3px solid var(--accent); padding: 8px 12px; margin: 8px 0; background: var(--bg); border-radius: 0 8px 8px 0; }
.chair b { text-transform: uppercase; font-size: 11px; letter-spacing: .5px; color: var(--muted); display: block; }
.empty { color: var(--muted); padding: 14px 0; font-style: italic; }
.hint { font-size: 12px; color: var(--muted); }
.chk { display: flex; align-items: flex-start; gap: 8px; padding: 6px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.chk input { width: auto; margin-top: 3px; }
.steps { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.steps span { padding: 4px 10px; border-radius: 999px; background: var(--line); font-size: 12px; }
.steps span.on { background: var(--accent); color: #fff; }

/* ---------- platform additions ---------- */
body.signed-out nav { display: none; }
body.signed-out .layout { grid-template-columns: 1fr; }
.admin-only { display: none; }
body.is-admin .admin-only { display: block; }
.nav-foot { padding: 14px 10px 4px; font-size: 11px; }
.nav-search { position: relative; padding: 0 4px 10px; }
.nav-search input { font-size: 13px; padding: 7px 9px; }
.search-results { position: absolute; left: 4px; right: 4px; top: 38px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; z-index: 40; max-height: 360px; overflow: auto; display: none; box-shadow: 0 8px 24px rgba(0,0,0,.15); }
.search-results a { display: block; padding: 7px 10px; border-radius: 0; margin: 0; font-size: 13px; }
.search-results a small { color: var(--muted); display: block; }
.auth-wrap { max-width: 420px; margin: 8vh auto; }
.auth-wrap h1 { font-size: 24px; }
.kpis { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.kpi .v.sm { font-size: 18px; }
.chart { width: 100%; height: 380px; }
.chart.sm { height: 150px; }
.chart.md { height: 260px; }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--muted); margin: 6px 0; }
.legend i { display: inline-block; width: 12px; height: 3px; vertical-align: middle; margin-right: 4px; border-radius: 2px; }
.score-ring { font-size: 34px; font-weight: 800; }
.pill { display: inline-block; padding: 3px 10px; border-radius: 999px; background: var(--line); font-size: 12px; margin: 2px 4px 2px 0; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
details.how { margin-top: 10px; font-size: 13px; }
details.how summary { cursor: pointer; color: var(--accent); }
details.how pre, pre.method { white-space: pre-wrap; font-size: 12px; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px; }
.warnbox { background: var(--warn-soft); color: var(--warn); border-radius: 8px; padding: 8px 12px; font-size: 13px; margin: 8px 0; }
.okbox { background: var(--ok-soft); color: var(--ok); border-radius: 8px; padding: 8px 12px; font-size: 13px; margin: 8px 0; }
.badbox { background: var(--bad-soft); color: var(--bad); border-radius: 8px; padding: 8px 12px; font-size: 13px; margin: 8px 0; }
.check { display: grid; grid-template-columns: 110px 1fr; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
@media (max-width: 1000px) { .chart { height: 300px; } }
.nav-toggle { display: none; }
@media (max-width: 1000px) {
  nav .brand { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
  nav .brand small { flex-basis: 100%; order: 3; }
  .nav-toggle { display: inline-block; margin-left: auto; }
  nav:not(.open) > a, nav:not(.open) > .sec, nav:not(.open) .admin-only, nav:not(.open) > .nav-foot { display: none; }
  main { padding: 16px max(16px, env(safe-area-inset-right, 0px)) 48px max(16px, env(safe-area-inset-left, 0px)); }
}