.quality-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.quality-stat {
    background: var(--bg-main);
    padding: 12px;
    border-radius: 8px;
    text-align: center;
}

.quality-stat.warning {
    background: rgba(245, 158, 11, 0.1);
}

.quality-stat.warning .quality-stat-value {
    color: var(--warning);
}

.quality-stat-value {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.quality-stat-label {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

.quality-columns {
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.quality-columns-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    background: var(--bg-main);
    padding: 10px 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.quality-column-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding: 10px 12px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    cursor: pointer;
    transition: background 0.2s;
}

.quality-column-row:hover {
    background: rgba(26, 86, 219, 0.05);
}

.quality-col-name {
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.quality-col-type {
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 4px;
    text-align: center;
}

.quality-col-type.numeric {
    background: rgba(26, 86, 219, 0.1);
    color: var(--primary);
}

.quality-col-type.categorical {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.quality-col-missing {
    text-align: center;
}

.quality-col-missing.warning {
    color: var(--warning);
    font-weight: 600;
}

.quality-col-missing.danger {
    color: var(--danger);
    font-weight: 600;
}

.quality-col-unique {
    text-align: center;
    color: var(--text-secondary);
}

.quality-detail-item {
    background: var(--bg-main);
    padding: 8px 12px;
    border-radius: 6px;
}

.quality-detail-item .label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.quality-detail-item .value {
    font-weight: 600;
    color: var(--text-primary);
}

.cleaning-info {
    background: var(--bg-main);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 13px;
}

.cleaning-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.cleaning-option {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.cleaning-option:hover {
    border-color: var(--primary);
    background: rgba(26, 86, 219, 0.02);
}

.cleaning-option-icon {
    width: 36px;
    height: 36px;
    background: var(--bg-main);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.cleaning-option-content {
    flex: 1;
}

.cleaning-option-title {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 2px;
}

.cleaning-option-desc {
    font-size: 12px;
    color: var(--text-muted);
}

.transform-section {
    margin-bottom: 16px;
}

.transform-section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.history-empty {
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
    padding: 20px 0;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
    margin-bottom: 4px;
}

.history-item:hover {
    background: var(--bg-main);
}

.history-item.current {
    background: rgba(26, 86, 219, 0.1);
    border-left: 3px solid var(--primary);
}

.history-action {
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.history-time {
    font-size: 11px;
    color: var(--text-muted);
    margin-left: 8px;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.modal-overlay.show {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    width: 28px;
    height: 28px;
    border: none;
    background: var(--bg-main);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.modal-close:hover {
    background: var(--border);
    color: var(--text-primary);
}

.history-toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.history-btn {
    flex: 1;
    padding: 8px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.2s;
}

.history-btn:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.history-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    .quality-summary {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cleaning-options {
        grid-template-columns: 1fr;
    }
}