:root {
  color-scheme: light;
  --bg: #f6f6f4;
  --surface: #fcfcfb;
  --border: #e4e3de;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #7a7974;
  --series-1: #2a78d6;
  --grid: #ecebe6;
  --good: #1a7f37;
  --good-bg: #e8f5ec;
  --warn: #9a6700;
  --warn-bg: #fff6dd;
  --bad: #b42318;
  --bad-bg: #fdecea;
  --accent: #2a78d6;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #121211;
    --surface: #1a1a19;
    --border: #2c2c2a;
    --text: #f0efec;
    --text-2: #c3c2b7;
    --muted: #9b9a92;
    --series-1: #3987e5;
    --grid: #262624;
    --good: #4ac26b;
    --good-bg: #13261a;
    --warn: #e3b341;
    --warn-bg: #2b2210;
    --bad: #f47067;
    --bad-bg: #2f1513;
    --accent: #3987e5;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
h1 { font-size: 17px; margin: 0; font-weight: 600; }
h2 { font-size: 14px; margin: 0; font-weight: 600; }
code { font-family: var(--mono); font-size: 0.9em; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
button { font: inherit; cursor: pointer; border-radius: 8px; padding: 8px 14px;
  border: 1px solid var(--accent); background: var(--accent); color: #fff; }
button.ghost { background: transparent; color: var(--text-2); border-color: var(--border); padding: 6px 12px; }
button:focus-visible, a:focus-visible, input:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* layout */
.top { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 14px 24px;
  background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 2; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.mark { width: 22px; height: 22px; border-radius: 6px; background: var(--accent); }
.modes { display: flex; gap: 4px; }
.modes a { text-decoration: none; color: var(--text-2); padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border); font-size: 13px; }
.modes a[aria-current="page"] { background: var(--text); color: var(--surface); border-color: var(--text); }
.logout { display: flex; align-items: center; gap: 10px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 20px 16px 40px; display: grid; gap: 16px; }
.grid2 { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 860px) { .grid2 { grid-template-columns: 1fr; } .top { padding: 12px 16px; } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; min-width: 0; }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 10px; }
.card-head.sub { margin-top: 18px; }
.scroll { max-height: 360px; overflow: auto; }
.scroll.short { max-height: 180px; }
.foot { text-align: center; }

/* status banner */
.banner { border-radius: var(--radius); padding: 12px 16px; border: 1px solid var(--border); display: flex; gap: 10px; align-items: flex-start; }
.banner .dot { width: 10px; height: 10px; border-radius: 50%; margin-top: 6px; flex: none; }
.banner.ok { background: var(--good-bg); border-color: transparent; } .banner.ok .dot { background: var(--good); }
.banner.warn { background: var(--warn-bg); border-color: transparent; } .banner.warn .dot { background: var(--warn); }
.banner.bad { background: var(--bad-bg); border-color: transparent; } .banner.bad .dot { background: var(--bad); }
.banner strong { display: block; }

/* KPIs */
.kpis { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
@media (max-width: 860px) { .kpis { grid-template-columns: repeat(2, 1fr); } }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.kpi .label { color: var(--text-2); font-size: 12.5px; }
.kpi .value { font-size: 24px; font-weight: 600; font-variant-numeric: tabular-nums; margin-top: 2px; }
.kpi .sub { color: var(--muted); font-size: 12px; }
.pos { color: var(--good); } .neg { color: var(--bad); }

/* tables */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th { text-align: left; color: var(--text-2); font-weight: 500; font-size: 12.5px; padding: 6px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 7px 8px; border-bottom: 1px solid var(--grid); vertical-align: top; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
.tablewrap { overflow-x: auto; }
.empty { color: var(--muted); padding: 10px 0; font-size: 13.5px; }
.tag { display: inline-block; font-size: 11.5px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-2); white-space: nowrap; }
.tag.good { color: var(--good); border-color: currentColor; }
.tag.bad { color: var(--bad); border-color: currentColor; }
.tag.warn { color: var(--warn); border-color: currentColor; }

/* bar list (skip reasons) */
.bars { display: grid; gap: 8px; }
.bars .row { display: grid; grid-template-columns: 1fr auto; gap: 4px 10px; font-size: 13px; }
.bars .track { grid-column: 1 / -1; height: 6px; background: var(--grid); border-radius: 3px; overflow: hidden; }
.bars .fill { height: 100%; background: var(--series-1); border-radius: 3px; }

/* chart */
.chart { position: relative; height: 260px; }
.chart svg { width: 100%; height: 100%; display: block; }
.chart .axis { fill: var(--muted); font-size: 11px; }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .baseline { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
.chart .line { fill: none; stroke: var(--series-1); stroke-width: 2; stroke-linejoin: round; }
.chart .cross { stroke: var(--text-2); stroke-width: 1; }
.chart .dot { fill: var(--series-1); stroke: var(--surface); stroke-width: 2; }
.tip { position: absolute; pointer-events: none; background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 10px; font-size: 12.5px; white-space: nowrap; box-shadow: 0 2px 8px rgba(0,0,0,.08); }
.tip b { font-variant-numeric: tabular-nums; }

/* report */
details summary { cursor: pointer; display: flex; align-items: baseline; gap: 10px; list-style: none; }
details summary::-webkit-details-marker { display: none; }
details summary::before { content: "▸"; color: var(--muted); }
details[open] summary::before { content: "▾"; }
.report { margin-top: 12px; font-size: 14px; }
.report h2 { font-size: 16px; margin: 18px 0 8px; } .report h3 { font-size: 14.5px; margin: 16px 0 6px; } .report h4 { font-size: 13.5px; margin: 14px 0 6px; }
.report td, .report th { font-size: 12.5px; }

/* login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login .card { width: 100%; max-width: 360px; display: grid; gap: 12px; padding: 24px; }
.login label { display: grid; gap: 4px; font-size: 13px; color: var(--text-2); }
.login input { font: inherit; padding: 9px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }
.login .error { background: var(--bad-bg); color: var(--bad); padding: 8px 10px; border-radius: 8px; margin: 0; font-size: 13.5px; }

/* v2 additions */
button.danger { background: transparent; color: var(--bad); border-color: var(--bad); padding: 6px 12px; }
button.danger:hover { background: var(--bad-bg); }
button.ghost:hover { border-color: var(--text-2); }
button:disabled { opacity: .5; cursor: not-allowed; }
.controls .ctl-row { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.code-field { display: grid; gap: 4px; font-size: 12.5px; color: var(--text-2); }
.code-field input, select { font: inherit; padding: 6px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }
.code-field input { width: 120px; letter-spacing: 2px; }
#ctl-msg:empty { display: none; }
#ctl-msg.ok { color: var(--good); } #ctl-msg.err { color: var(--bad); }
.chart.tall { height: 340px; }
.chart .up { fill: var(--good); stroke: var(--good); }
.chart .down { fill: var(--bad); stroke: var(--bad); }
.chart .wick { stroke-width: 1; }
.chart .bar-pos { fill: var(--good); } .chart .bar-neg { fill: var(--bad); }
.chart .mk-long { fill: var(--good); stroke: var(--surface); stroke-width: 1.5; }
.chart .mk-short { fill: var(--bad); stroke: var(--surface); stroke-width: 1.5; }
.chart .mk-exit { fill: var(--surface); stroke: var(--text); stroke-width: 1.5; }
.chart .stopline { stroke: var(--warn); stroke-width: 1.5; stroke-dasharray: 5 4; }
.chart .entryline { stroke: var(--text-2); stroke-width: 1; stroke-dasharray: 2 3; }
.legend { display: flex; gap: 6px 14px; align-items: center; flex-wrap: wrap; margin: 8px 0 0; }
.key { display: inline-block; width: 10px; height: 10px; margin-right: -8px; vertical-align: middle; }
.key.up { background: var(--good); clip-path: polygon(50% 0, 100% 100%, 0 100%); }
.key.down { background: var(--bad); clip-path: polygon(0 0, 100% 0, 50% 100%); }
.key.exit { border: 1.5px solid var(--text); border-radius: 50%; }
.key.stopline { height: 0; border-top: 2px dashed var(--warn); width: 14px; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button { background: transparent; color: var(--text-2); border: 0; border-radius: 0; padding: 4px 12px; font-size: 13px; }
.seg button[aria-pressed="true"] { background: var(--text); color: var(--surface); }
.reasons { color: var(--muted); font-size: 12px; margin-top: 2px; }

/* export */
.exp-row { display: flex; flex-wrap: wrap; gap: 8px; }
a.btn { display: inline-block; text-decoration: none; font: inherit; font-size: 14px; border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 12px; color: var(--text-2); background: transparent; }
a.btn:hover { border-color: var(--text-2); }
@media print {
  .top .logout, .modes, .export, .controls, #bt-filter, .legend { display: none !important; }
  body { background: #fff; color: #000; }
  .card { break-inside: avoid; box-shadow: none; border-color: #ccc; }
  .scroll { max-height: none !important; overflow: visible !important; }
  details > .report { display: block; }
}