.backtest-page {
    padding: var(--space-7) 0 var(--space-10);
}

.backtest-summary,
.backtest-reports,
.backtest-replay {
    padding: var(--space-5);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
}

.backtest-grid {
    display: grid;
    grid-template-columns: minmax(320px, 380px) minmax(0, 1fr);
    gap: var(--space-5);
    align-items: start;
}

.report-toolbar {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.report-search {
    gap: var(--space-2);
}

.filter-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 32px;
    padding: 0 12px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-default);
    background: rgba(255, 255, 255, 0.015);
    color: var(--text-secondary);
    transition: border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.filter-chip:hover {
    transform: translateY(-1px);
    border-color: var(--border-strong);
}

.filter-chip.is-active {
    border-color: var(--accent-primary);
    color: var(--text-primary);
    box-shadow: var(--ring-accent);
}

.filter-chip__count {
    color: var(--text-tertiary);
    font-family: var(--mono-font);
    font-size: 0.74rem;
}

.report-list-shell {
    display: grid;
    gap: var(--space-3);
}

.report-list-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    color: var(--text-tertiary);
    font-family: var(--mono-font);
    font-size: 0.76rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.report-list {
    display: grid;
    gap: var(--space-3);
    max-height: 980px;
    overflow: auto;
    padding-right: 2px;
}

.report-item {
    width: 100%;
    padding: var(--space-4);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-default);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 30%),
        var(--bg-surface);
    color: var(--text-primary);
    text-align: left;
    transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.report-item:hover {
    transform: translateY(-1px);
    border-color: var(--border-strong);
}

.report-item.is-selected {
    border-color: var(--accent-primary);
    box-shadow: var(--ring-accent);
}

.report-item__head,
.report-item__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
}

.report-item__head {
    margin-bottom: var(--space-2);
}

.report-item__title {
    font-size: 0.98rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.report-item__time,
.report-item__url,
.report-item__preview {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.report-item__url,
.report-item__preview {
    overflow: hidden;
    display: -webkit-box;
    -webkit-box-orient: vertical;
}

.report-item__url {
    -webkit-line-clamp: 2;
}

.report-item__preview {
    -webkit-line-clamp: 3;
    margin-top: var(--space-2);
}

.report-item__meta {
    margin-top: var(--space-3);
    color: var(--text-tertiary);
    font-family: var(--mono-font);
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.report-item__meta .badge {
    min-height: 26px;
}

.detail-stack {
    display: grid;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.detail-grid,
.replay-result-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
}

.detail-grid > :first-child {
    grid-column: span 2;
}

.detail-card,
.replay-result-card,
.replay-status {
    padding: var(--space-4);
}

.detail-card__label {
    margin-bottom: var(--space-3);
    color: var(--text-tertiary);
    font-family: var(--mono-font);
    font-size: 0.76rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.detail-kv {
    display: grid;
    gap: var(--space-3);
    margin: 0;
}

.detail-kv div {
    display: grid;
    gap: 4px;
}

.detail-kv dt {
    color: var(--text-tertiary);
    font-family: var(--mono-font);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.detail-kv dd {
    margin: 0;
    color: var(--text-primary);
    word-break: break-word;
}

.detail-kv--compact {
    gap: var(--space-2);
}

.detail-pre {
    margin: 0;
    min-height: 220px;
    padding: var(--space-4);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-default);
    background: rgba(0, 0, 0, 0.18);
    color: var(--text-primary);
    font-family: var(--mono-font);
    font-size: 0.92rem;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
    overflow: auto;
}

.replay-form {
    display: grid;
    gap: var(--space-4);
}

.replay-form__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
}

.replay-form__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-3);
}

.field-help {
    margin: calc(var(--space-1) * -1) 0 0;
    color: var(--text-tertiary);
    font-size: 0.88rem;
}

.replay-status {
    border-color: var(--border-default);
    color: var(--text-secondary);
}

.replay-status.is-success {
    border-color: rgba(77, 163, 255, 0.5);
    color: var(--accent-soft);
}

.replay-status.is-error {
    border-color: rgba(251, 86, 91, 0.5);
    color: #ff9aa0;
}

.replay-result-pre {
    min-height: 180px;
}

.backtest-empty,
.backtest-error {
    padding: var(--space-5);
    color: var(--text-secondary);
}

.backtest-empty strong,
.backtest-error strong {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.report-item__type.badge[data-report-type="error"],
.badge[data-report-type="error"] {
    border-color: rgba(251, 86, 91, 0.5);
    color: #ff9aa0;
}

.report-item__type.badge[data-report-type="layout"],
.badge[data-report-type="layout"] {
    border-color: rgba(76, 179, 212, 0.45);
    color: var(--accent-info);
}

.report-item__type.badge[data-report-type="quality"],
.badge[data-report-type="quality"] {
    border-color: rgba(129, 140, 248, 0.5);
    color: var(--accent-secondary);
}

@media (max-width: 1100px) {
    .summary-grid,
    .detail-grid,
    .replay-result-grid,
    .replay-form__grid {
        grid-template-columns: 1fr;
    }

    .detail-grid > :first-child {
        grid-column: auto;
    }

    .backtest-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .backtest-page {
        padding-top: var(--space-5);
    }

    .backtest-summary,
    .backtest-reports,
    .backtest-replay {
        padding: var(--space-4);
    }

    .replay-form__header {
        flex-direction: column;
    }

    .report-list {
        max-height: none;
    }
}