.alpha-backtest-section {
    margin: 2.5rem 0;
}

.alpha-backtest-shell {
    max-width: 1080px;
    margin: 0 auto;
}

.alpha-backtest-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.alpha-backtest-header h4 {
    margin: 0;
}

.alpha-backtest-meta {
    color: #94a3b8;
    font-size: 0.85rem;
    white-space: nowrap;
    flex-shrink: 0;
    padding-top: 0.15rem;
}

.alpha-backtest-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.alpha-backtest-layout {
    display: grid;
    grid-template-columns: minmax(260px, 0.42fr) minmax(0, 0.58fr);
    gap: 1.5rem;
    align-items: start;
}

.alpha-backtest-lead {
    color: #475569;
    margin: 0 0 1rem 0;
    font-size: 0.92rem;
    line-height: 1.55;
}

.alpha-backtest-summary {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #475569;
}

.alpha-backtest-summary .summary-item {
    display: block;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 0.5rem 0.75rem;
}

.alpha-backtest-summary .pct-gain {
    color: #059669;
    font-weight: 600;
}

.alpha-backtest-rules {
    margin: 0 0 1rem 0;
    padding-left: 1.15rem;
    color: #64748b;
    font-size: 0.85rem;
    line-height: 1.5;
}

.alpha-backtest-rules li + li {
    margin-top: 0.35rem;
}

.alpha-backtest-notes {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.alpha-backtest-note {
    border: 1px solid #e2e8f0;
    background: #f8fafc;
    border-radius: 12px;
    padding: 0.75rem 1rem;
}

.alpha-backtest-note-title {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.25rem;
    font-size: 0.85rem;
}

.alpha-backtest-note-body {
    color: #64748b;
    font-size: 0.82rem;
    line-height: 1.45;
}

.alpha-backtest-disclaimer {
    margin: 0;
    color: #94a3b8;
    font-size: 0.78rem;
    line-height: 1.45;
}

.alpha-backtest-chart {
    min-width: 0;
}

.alpha-backtest-plot-host {
    width: 100%;
    min-height: 360px;
}

.alpha-backtest-winners {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid #e2e8f0;
}

.alpha-backtest-winners-title {
    margin: 0 0 0.35rem 0;
    font-size: 0.95rem;
    color: #1e293b;
}

.alpha-backtest-winners-lead {
    margin: 0 0 0.75rem 0;
    font-size: 0.82rem;
    color: #64748b;
    line-height: 1.45;
}

.alpha-backtest-winners-table-wrap {
    overflow-x: auto;
}

.alpha-backtest-winners-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.84rem;
}

.alpha-backtest-winners-table th,
.alpha-backtest-winners-table td {
    padding: 0.5rem 0.65rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.alpha-backtest-winners-table th {
    color: #64748b;
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.alpha-backtest-winners-table tbody tr:last-child td {
    border-bottom: none;
}

.alpha-backtest-winners-table .hold-return-positive {
    color: #059669;
    font-weight: 600;
}

.alpha-backtest-winners-table .hold-return-negative {
    color: #dc2626;
    font-weight: 600;
}

.alpha-backtest-winners-table .hold-side-bull {
    color: #059669;
}

.alpha-backtest-winners-table .hold-side-bear {
    color: #dc2626;
}

.alpha-backtest-winners-note {
    margin: 0.65rem 0 0 0;
    font-size: 0.78rem;
    color: #94a3b8;
    line-height: 1.45;
}

@media (max-width: 900px) {
    .alpha-backtest-layout {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .alpha-backtest-chart {
        order: -1;
    }

    .alpha-backtest-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .alpha-backtest-meta {
        white-space: normal;
    }
}

@media (max-width: 768px) {
    .alpha-backtest-shell {
        max-width: none;
    }

    .alpha-backtest-card {
        padding: 1rem;
    }
}