:root {
  color-scheme: light;
  --bg: #f4f4f2; --surface: #fcfcfb; --border: #e2e1dc;
  --text: #0b0b0b; --text-2: #52514e; --muted: #6b6a66;
  --accent: #2a78d6; --accent-wash: rgba(42,120,214,.10); --grid: #ebeae6;
  --good: #0a7f0a; --bad: #c03030; --neutral: #6b6a66;
  --warn-bg: #fff4d6; --warn-border: #e8b84a; --warn-text: #5a4300;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #111110; --surface: #1a1a19; --border: #2f2f2d;
    --text: #f0efec; --text-2: #c3c2b7; --muted: #9a998f;
    --accent: #3987e5; --accent-wash: rgba(57,135,229,.14); --grid: #2a2a28;
    --good: #3cc23c; --bad: #e66767; --neutral: #a3a299;
    --warn-bg: #2e2510; --warn-border: #8a6a1c; --warn-text: #f3d68d;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111110; --surface: #1a1a19; --border: #2f2f2d;
  --text: #f0efec; --text-2: #c3c2b7; --muted: #9a998f;
  --accent: #3987e5; --accent-wash: rgba(57,135,229,.14); --grid: #2a2a28;
  --good: #3cc23c; --bad: #e66767; --neutral: #a3a299;
  --warn-bg: #2e2510; --warn-border: #8a6a1c; --warn-text: #f3d68d;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; padding: 0 16px 32px; }
h1 { font-size: 1.35rem; margin: 0; }
h2 { font-size: 1.2rem; margin: 0; }
h3 { font-size: 1.02rem; margin: 28px 0 4px; }
.muted { color: var(--muted); } .small { font-size: .85rem; }
.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 0 8px;
  max-width: 1200px; margin: 0 auto; }
.detail, .cards { max-width: 1200px; margin-left: auto; margin-right: auto; }
button { font: inherit; cursor: pointer; }
button.link { background: none; border: 0; color: var(--accent); padding: 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(165px, 1fr)); gap: 10px; margin-top: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px;
  text-align: left; color: var(--text); }
.card[aria-pressed="true"] { outline: 2px solid var(--accent); }
.card .pair { font-weight: 600; } .card .price { font-size: 1.25rem; font-variant-numeric: tabular-nums; margin: 4px 0; }
.sig { display: inline-block; font-weight: 600; font-size: .78rem; letter-spacing: .02em; padding: 2px 8px;
  border-radius: 999px; border: 1px solid currentColor; }
.sig.COMPRAR { color: var(--good); } .sig.VENDER { color: var(--bad); } .sig.ESPERAR { color: var(--neutral); }
.up { color: var(--good); } .down { color: var(--bad); }
.detail { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-top: 16px; }
.detail-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; align-items: flex-start; }
.range button { background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 4px 10px; }
.range button:first-child { border-radius: 6px 0 0 6px; } .range button:last-child { border-radius: 0 6px 6px 0; }
.range button.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.grid2 { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 16px; margin-top: 12px; }
@media (max-width: 820px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }
figure { margin: 0; }
.chart-wrap { position: relative; height: 340px; }
.fc { border: 1px solid var(--border); border-radius: 10px; padding: 12px; font-size: .92rem; }
.fc dl { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; margin: 8px 0; }
.fc dt { color: var(--muted); } .fc dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.fc .big { font-size: 1.1rem; margin: 6px 0; }
.stats { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0; }
.stat { border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; min-width: 140px; }
.stat b { display: block; font-size: 1.15rem; font-variant-numeric: tabular-nums; }
.table-scroll { overflow-x: auto; max-height: 420px; overflow-y: auto; border: 1px solid var(--border); border-radius: 8px; }
table { border-collapse: collapse; width: 100%; font-size: .85rem; font-variant-numeric: tabular-nums; }
th, td { padding: 6px 8px; border-bottom: 1px solid var(--grid); text-align: right; white-space: nowrap; }
th { position: sticky; top: 0; background: var(--surface); color: var(--text-2); font-weight: 600; }
td:first-child, th:first-child { text-align: left; }
.login-page { display: grid; place-items: center; min-height: 100vh; }
.login-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 24px;
  width: 100%; max-width: 380px; }
.login-card label { display: block; margin: 12px 0; font-size: .9rem; color: var(--text-2); }
.login-card input { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px; }
.login-card button[type=submit] { width: 100%; padding: 9px; background: var(--accent); color: #fff; border: 0; border-radius: 6px; margin-top: 4px; }
.error { color: var(--bad); }
.freq { display: inline-block; font-size: .7rem; font-weight: 600; padding: 1px 6px; border-radius: 4px;
  border: 1px solid var(--border); color: var(--text-2); vertical-align: middle; }
.freq.diaria { background: var(--warn-bg); border-color: var(--warn-border); color: var(--warn-text); }
#d-meta { margin: 4px 0 0; }
.nw { white-space: nowrap; }