:root {
  color-scheme: light;
  --surface-0: #f5f5f2;
  --surface-1: #fcfcfb;
  --surface-2: #f0efec;
  --border: #e2e1dc;
  --text-primary: #0b0b0b;
  --text-secondary: #52514e;
  --text-muted: #85847f;
  --accent: #2a78d6;
  --bull: #e34948;      /* Taiwan convention: red is up */
  --bear: #2a78d6;
  --neutral: #c9c8c2;
  --mixed: #eda100;
  --up: #d03b3a;        /* returns: red up, green down */
  --down: #17894a;
  --grid: #ebeae6;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --surface-0: #121211;
    --surface-1: #1a1a19;
    --surface-2: #242422;
    --border: #33332f;
    --text-primary: #ffffff;
    --text-secondary: #c3c2b7;
    --text-muted: #8d8c84;
    --accent: #3987e5;
    --bull: #e66767;
    --bear: #3987e5;
    --neutral: #55554f;
    --mixed: #c98500;
    --up: #ef6b6a;
    --down: #45c07a;
    --grid: #2a2a27;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --surface-0: #121211; --surface-1: #1a1a19; --surface-2: #242422; --border: #33332f;
  --text-primary: #ffffff; --text-secondary: #c3c2b7; --text-muted: #8d8c84;
  --accent: #3987e5; --bull: #e66767; --bear: #3987e5; --neutral: #55554f; --mixed: #c98500;
  --up: #ef6b6a; --down: #45c07a; --grid: #2a2a27;
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--surface-0); color: var(--text-primary);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "PingFang TC", sans-serif;
  font-variant-numeric: tabular-nums;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

header {
  position: sticky; top: 0; z-index: 5; background: var(--surface-1);
  border-bottom: 1px solid var(--border);
}
.bar { max-width: 1180px; margin: 0 auto; padding: 10px 16px; display: flex; gap: 18px; align-items: center; flex-wrap: wrap; }
.brand { font-weight: 700; letter-spacing: .2px; color: var(--text-primary); }
nav a { color: var(--text-secondary); padding: 4px 2px; margin-right: 12px; }
nav a.on { color: var(--text-primary); border-bottom: 2px solid var(--accent); }
.search { margin-left: auto; }
input, select, button {
  font: inherit; color: var(--text-primary); background: var(--surface-1);
  border: 1px solid var(--border); border-radius: 6px; padding: 5px 9px;
}
button { cursor: pointer; }
button:hover:not(:disabled) { background: var(--surface-2); }
button:disabled { opacity: .4; cursor: default; }

main { max-width: 1180px; margin: 0 auto; padding: 18px 16px 60px; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 28px 0 10px; }
.sub { color: var(--text-secondary); margin: 0 0 16px; }
.muted { color: var(--text-muted); }

.daypick { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 6px 0 18px; }
.daypick .dow { color: var(--text-secondary); min-width: 2.5em; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 18px; }
.tile { background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
.tile .k { color: var(--text-secondary); font-size: 12px; }
.tile .v { font-size: 24px; font-weight: 650; }
.tile .s { color: var(--text-muted); font-size: 12px; }

.card { background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px; padding: 4px 0; overflow-x: auto; }
table { border-collapse: collapse; width: 100%; }
th, td { padding: 7px 10px; text-align: left; white-space: nowrap; border-bottom: 1px solid var(--grid); }
th { color: var(--text-secondary); font-weight: 550; font-size: 12px; }
td.n, th.n { text-align: right; }
tr.rowx { cursor: pointer; }
tr.rowx:hover td { background: var(--surface-2); }
tr.samples td { white-space: normal; background: var(--surface-2); color: var(--text-secondary); font-size: 13px; }
tr.samples .c { margin: 3px 0; }
.cfilter { display: flex; flex-wrap: wrap; gap: 6px; margin: 2px 0 8px; }
.cfilter button { font: inherit; font-size: 12px; padding: 2px 10px; border-radius: 12px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface-1); color: var(--text-secondary); }
.cfilter button.on { border-color: var(--accent); color: var(--text-primary); font-weight: 600; }
.clist { max-height: 420px; overflow-y: auto; padding-right: 6px; }
.chip.st-bullish { border-color: var(--bull); color: var(--bull); }
.chip.st-bearish { border-color: var(--bear); color: var(--bear); }
.chip.st-mixed { border-color: var(--mixed); }
.chip { display: inline-block; font-size: 11px; padding: 1px 6px; border-radius: 9px; border: 1px solid var(--border); color: var(--text-secondary); margin-right: 4px; }
.grp { display: inline-block; font-size: 12px; font-weight: 600; padding: 1px 8px; border-radius: 9px; border: 1px solid; }
.grp-bullish { color: var(--bull); border-color: var(--bull); background: color-mix(in srgb, var(--bull) 12%, transparent); }
.grp-bearish { color: var(--bear); border-color: var(--bear); background: color-mix(in srgb, var(--bear) 12%, transparent); }
.grp-split { color: var(--text-secondary); border-color: var(--neutral); background: color-mix(in srgb, var(--neutral) 25%, transparent); }
.chip.top { border-color: var(--accent); }
.chip.spike { border-color: var(--mixed); }

.stancebar { display: inline-flex; width: 120px; height: 10px; border-radius: 3px; overflow: hidden; background: var(--surface-2); vertical-align: middle; gap: 2px; }
.stancebar span { display: block; height: 100%; }
.stancebar .b { background: var(--bull); }
.stancebar .r { background: var(--bear); }
.stancebar .u { background: var(--neutral); }
.stancebar .m { background: var(--mixed); }
.legend { display: flex; gap: 14px; color: var(--text-secondary); font-size: 12px; margin: 8px 0; flex-wrap: wrap; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }

.charts { display: grid; gap: 10px; }
.chartbox { background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.chartbox h3 { margin: 0 0 4px; font-size: 13px; color: var(--text-secondary); font-weight: 550; }
.chartbox .c { position: relative; height: 170px; }

.btgrid td.cell { line-height: 1.25; }
.btgrid .main { font-weight: 600; }
.up { color: var(--up); }
.down { color: var(--down); }
.btgrid .sm { color: var(--text-muted); font-size: 11px; }
.note { color: var(--text-secondary); font-size: 13px; max-width: 760px; }
.empty { padding: 30px; text-align: center; color: var(--text-muted); }

/* review */
.alias { background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 14px; }
.alias h3 { margin: 0 0 6px; font-size: 16px; }
.alias .row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 6px 0; }
.alias .cm { border-top: 1px solid var(--grid); padding: 6px 0; display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.alias .cm .t { flex: 1 1 320px; }
mark { background: color-mix(in srgb, var(--mixed) 35%, transparent); color: inherit; padding: 0 2px; border-radius: 2px; }
.toast { position: fixed; bottom: 18px; right: 18px; background: var(--text-primary); color: var(--surface-1); padding: 8px 14px; border-radius: 8px; opacity: 0; transition: opacity .2s; }
.toast.on { opacity: 1; }

@media (max-width: 640px) {
  .search { margin-left: 0; width: 100%; }
  .search input { width: 100%; }
  .tile .v { font-size: 20px; }
}