:root{color-scheme:dark;--bg: #0d1117;--bg-elev: #161b22;--bg-elev-2: #1f2630;--border: #30363d;--text: #c9d1d9;--muted: #8b949e;--bid: #2ea043;--bid-bg: rgba(46, 160, 67, .12);--ask: #f85149;--ask-bg: rgba(248, 81, 73, .12);--accent: #58a6ff}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;font-size:13px}.app{display:flex;flex-direction:column;height:100%}.app-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--border);background:var(--bg-elev)}.app-header h1{font-size:14px;font-weight:600;margin:0;letter-spacing:.4px}.connection-pill{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-size:11px;background:var(--bg-elev-2);border:1px solid var(--border)}.connection-pill .dot{width:8px;height:8px;border-radius:50%;background:var(--muted)}.connection-pill.open .dot{background:var(--bid)}.connection-pill.connecting .dot{background:#d29922}.connection-pill.closed .dot{background:var(--ask)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(420px,1fr));gap:12px;padding:12px;overflow:auto}.card{background:var(--bg-elev);border:1px solid var(--border);border-radius:8px;overflow:hidden;display:flex;flex-direction:column}.card-header{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;border-bottom:1px solid var(--border);background:var(--bg-elev-2)}.card-header .symbol{font-size:14px;font-weight:600;letter-spacing:.4px}.card-header .status{font-size:11px;color:var(--muted)}.card-body{display:grid;grid-template-columns:1fr 220px;min-height:280px}.chart-wrap{position:relative;min-height:260px;border-right:1px solid var(--border)}.book{display:flex;flex-direction:column;font-variant-numeric:tabular-nums}.book-section{flex:1;display:flex;flex-direction:column;font-size:11px}.book-row{position:relative;display:grid;grid-template-columns:1fr 1fr;padding:2px 8px}.book-row .price{font-weight:600}.book-row .size{text-align:right;color:var(--muted)}.book-row.bid .price{color:var(--bid)}.book-row.ask .price{color:var(--ask)}.book-row .depth-bar{position:absolute;top:0;bottom:0;z-index:0}.book-row .depth-bar.bid{right:0;background:var(--bid-bg)}.book-row .depth-bar.ask{right:0;background:var(--ask-bg)}.book-row>*{position:relative;z-index:1}.book-spread{text-align:center;padding:4px;border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--bg-elev-2);font-size:11px;color:var(--muted)}.error{padding:16px;color:var(--ask)}