:root {
  --bg: #0a0c10;
  --surface: #12151c;
  --surface-2: #181c25;
  --border: #232834;
  --ink: #eef1f6;
  --ink-soft: #8b93a5;
  --accent: #3ddc97;
  --accent-bright: #5cf0af;
  --danger: #ff5c6a;
  --on-accent: #04140d;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }

.topbar { display: flex; align-items: center; justify-content: space-between; padding: 1.1rem 1.5rem; border-bottom: 1px solid var(--border); flex-wrap: wrap; gap: 0.6rem; }
.wordmark { font-weight: 800; letter-spacing: 0.08em; color: var(--accent-bright); }
.badge-paper { background: rgba(255, 92, 106, 0.15); color: var(--danger); border: 1px solid var(--danger); padding: 0.3rem 0.8rem; border-radius: 999px; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.04em; }

main { max-width: 1100px; margin: 0 auto; padding: 1.5rem; display: flex; flex-direction: column; gap: 1.5rem; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.2rem; }
.stat-card h3 { margin: 0 0 0.8rem; font-size: 1rem; color: var(--accent-bright); }
.stat-row { display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--ink-soft); padding: 0.25rem 0; }
.stat-row span:last-child { color: var(--ink); font-weight: 600; }
.pnl-positive { color: var(--accent-bright) !important; }
.pnl-negative { color: var(--danger) !important; }

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; }
.panel-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.8rem; margin-bottom: 0.6rem; }
.panel h2 { margin: 0; font-size: 1.1rem; }
.hint { color: var(--ink-soft); font-size: 0.85rem; margin: 0 0 1rem; }

.btn { background: var(--accent); color: var(--on-accent); border: none; padding: 0.6rem 1.2rem; border-radius: 8px; font-weight: 700; font-size: 0.85rem; cursor: pointer; }
.btn:hover { background: var(--accent-bright); }
.btn:disabled { opacity: 0.6; cursor: default; }

.backtest-asset { display: flex; justify-content: space-between; align-items: center; padding: 0.7rem 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.backtest-asset:last-child { border-bottom: none; }
.backtest-asset .name { font-weight: 700; }

.chart-tabs { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.chart-tab { background: var(--surface-2); border: 1px solid var(--border); color: var(--ink-soft); padding: 0.5rem 1rem; border-radius: 6px; font-size: 0.82rem; font-weight: 600; cursor: pointer; }
.chart-tab.active { border-color: var(--accent); color: var(--accent-bright); }
#price-chart { width: 100%; height: 300px; background: var(--surface-2); border-radius: 8px; }

.trade-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.trade-table th { text-align: left; color: var(--ink-soft); font-weight: 600; padding: 0.6rem 0.5rem; border-bottom: 1px solid var(--border); }
.trade-table td { padding: 0.6rem 0.5rem; border-bottom: 1px solid var(--border); }
.dir-long { color: var(--accent-bright); font-weight: 700; }
.dir-short { color: var(--danger); font-weight: 700; }
.status-open { color: #e8c766; }
.status-closed { color: var(--ink-soft); }