:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --series-k: #2a78d6;     /* categorical slot 1: Slow %K */
  --series-d: #eb6834;     /* categorical slot 2: Slow %D */
  --series-price: #52514e; /* price line in secondary ink */
  --good: #0ca30c;         /* golden cross / BUY */
  --critical: #d03b3b;     /* dead cross / SELL */
  --zone: rgba(42, 120, 214, 0.07);
  --chip-buy-bg: #e3f5e3;
  --chip-sell-bg: #fbe4e4;
  --chip-hold-bg: #f0efec;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --series-k: #3987e5;
    --series-d: #d95926;
    --series-price: #c3c2b7;
    --good: #0ca30c;
    --critical: #d03b3b;
    --zone: rgba(57, 135, 229, 0.10);
    --chip-buy-bg: #163816;
    --chip-sell-bg: #3d1a1a;
    --chip-hold-bg: #383835;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --series-k: #3987e5;
  --series-d: #d95926;
  --series-price: #c3c2b7;
  --good: #0ca30c;
  --critical: #d03b3b;
  --zone: rgba(57, 135, 229, 0.10);
  --chip-buy-bg: #163816;
  --chip-sell-bg: #3d1a1a;
  --chip-hold-bg: #383835;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--page);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  padding: 0 16px 48px;
}
main { max-width: 1100px; margin: 0 auto; display: grid; gap: 20px; }
main > * { min-width: 0; } /* let the scrollable table shrink instead of widening the grid */

.top {
  max-width: 1100px; margin: 0 auto; padding: 24px 0 16px;
  display: flex; justify-content: space-between; align-items: flex-start; gap: 16px;
}
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 12px; }
.sub { margin: 4px 0 0; color: var(--ink-2); font-size: 14px; }
.repo { color: var(--ink-2); font-size: 14px; text-decoration: none; border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; white-space: nowrap; }
.repo:hover { color: var(--ink); }
.muted { color: var(--muted); font-weight: 400; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 8px; }
.toolbar h2 { margin: 0; margin-right: auto; }
.seg { display: flex; flex-wrap: wrap; gap: 4px; }
.seg button {
  font: inherit; font-size: 13px; cursor: pointer;
  color: var(--ink-2); background: transparent;
  border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px;
}
.seg button:hover { color: var(--ink); background: var(--chip-hold-bg); }
.seg button.on { color: var(--ink); background: var(--chip-hold-bg); border-color: var(--axis); font-weight: 600; }

.chart { width: 100%; height: 640px; }
@media (max-width: 640px) { .chart { height: 560px; } }
.hint { margin: 8px 0 0; color: var(--muted); font-size: 13px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--grid); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.02em; }
td.num { font-variant-numeric: tabular-nums; }
td.reasons { white-space: normal; color: var(--ink-2); }
td.price { line-height: 1.25; }
td.price .usd { display: block; }
td.price .krw { display: block; color: var(--muted); font-size: 12px; }
tbody tr { cursor: pointer; }
tbody tr:hover { background: var(--chip-hold-bg); }
tbody tr.on td:first-child { font-weight: 700; }
#history tbody tr { cursor: default; }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 2px 10px; border-radius: 999px; font-weight: 600; font-size: 13px;
  color: var(--ink);
}
.chip.BUY { background: var(--chip-buy-bg); }
.chip.SELL { background: var(--chip-sell-bg); }
.chip.HOLD { background: var(--chip-hold-bg); color: var(--ink-2); font-weight: 500; }
.chip .dot { width: 8px; height: 8px; border-radius: 50%; }
.chip.BUY .dot { background: var(--good); }
.chip.SELL .dot { background: var(--critical); }
.chip.HOLD .dot { background: var(--muted); }

.kd { font-variant-numeric: tabular-nums; }
.kd .up { color: var(--good); }
.kd .down { color: var(--critical); }

.disclaimer { color: var(--muted); font-size: 12px; margin: 0; }
.error { color: var(--critical); }

/* ---------- news & sentiment ---------- */
.sent {
  display: inline-block; min-width: 2.4em; text-align: center;
  padding: 1px 8px; border-radius: 999px; font-weight: 600; font-size: 13px;
  font-variant-numeric: tabular-nums; background: var(--chip-hold-bg); color: var(--ink-2);
}
.sent.pos { background: var(--chip-buy-bg); color: var(--good); }
.sent.neg { background: var(--chip-sell-bg); color: var(--critical); }
.news-sector { margin: 12px 0 0; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 14px; color: var(--ink-2); }
.news-sector .summary { color: var(--ink); }
.label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.02em; }
.small { font-size: 12px; }
.news-card { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--grid); }
.news-card h3 { font-size: 15px; margin: 0 0 8px; }
.news-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.news-summary { margin: 0 0 8px; padding-left: 18px; color: var(--ink); }
.news-summary li { margin: 2px 0; }
.headlines { margin: 0; padding-left: 18px; font-size: 14px; }
.headlines li { margin: 3px 0; }
.headlines a { color: var(--series-k); text-decoration: none; }
.headlines a:hover { text-decoration: underline; }
.news-card p.muted { margin: 0; font-size: 14px; }

/* ---------- hit-rate tracking ---------- */
.small-card h2 { margin-bottom: 4px; }
#tracking th { white-space: nowrap; }
#tracking tbody tr { cursor: default; }
#tracking td.up { color: var(--good); }
#tracking td.down { color: var(--critical); }