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

.alpha-backtest-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.alpha-backtest-subtitle {
    color: #64748b;
    margin: 0.35rem 0 0 0;
    font-size: 0.95rem;
}

.alpha-backtest-meta {
    color: #94a3b8;
    font-size: 0.85rem;
    white-space: nowrap;
}

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

.alpha-backtest-summary {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #475569;
}

.alpha-backtest-summary span {
    background: #f8fafc;
    border-radius: 999px;
    padding: 0.35rem 0.75rem;
}

.alpha-backtest-notes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.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;
}

.alpha-backtest-note-body {
    color: #64748b;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .alpha-backtest-header {
        flex-direction: column;
        align-items: flex-start;
    }
}