:root {
  --bg: #0d1117;
  --panel: #161b22;
  --border: #283041;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --up: #3fb950;
  --down: #f85149;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 "Segoe UI", Roboto, system-ui, sans-serif;
  padding: 24px;
  max-width: 1100px;
  margin: 0 auto;
}

header { margin-bottom: 16px; }
.head-row { display: flex; align-items: center; gap: 12px; }
h1 { font-size: 26px; margin: 0; letter-spacing: -0.5px; }
.subtitle { color: var(--muted); margin: 6px 0 0; }
.subtitle strong { color: var(--accent); font-weight: 600; }

.badge {
  font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px;
  border: 1px solid var(--border);
}
.badge.live { color: var(--up); border-color: var(--up); }
.badge.live::before { content: "● "; }
.badge.sample { color: var(--muted); }

.controls {
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 14px 16px; margin-bottom: 16px;
}
.controls label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
.controls select {
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 8px; font-size: 14px;
}
.price-box { margin-left: auto; text-align: right; }
.price-label { display: block; font-size: 11px; color: var(--muted); text-transform: uppercase; }
.price { font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }

main { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; }
.chart-panel { grid-column: 1; }
.tape-panel { grid-column: 2; grid-row: 1 / span 2; }
.table-panel { grid-column: 1; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.panel h2 { font-size: 14px; margin: 0 0 12px; }
.muted { color: var(--muted); font-weight: 400; }

canvas { width: 100%; height: auto; display: block; }

.tape { list-style: none; margin: 0; padding: 0; max-height: 460px; overflow: hidden; font-variant-numeric: tabular-nums; }
.tape li { display: flex; justify-content: space-between; padding: 3px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.tape .px.up { color: var(--up); }
.tape .px.down { color: var(--down); }
.tape .qty { color: var(--muted); }

table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: right; padding: 5px 8px; border-bottom: 1px solid var(--border); font-size: 13px; }
th:first-child, td:first-child { text-align: left; color: var(--muted); }

footer { color: var(--muted); font-size: 12px; margin-top: 24px; }
footer a { color: var(--accent); }

@media (max-width: 720px) {
  main { grid-template-columns: 1fr; }
  .tape-panel { grid-column: 1; grid-row: auto; }
}