/* Version Comparison Tool Styles */

.version-comparison-tool {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    overflow: hidden;
}

/* Header Styles */
.comparison-header {
    padding: 1rem;
    border-bottom: 1px solid #e5e7eb;
    background: #f9fafb;
}

.comparison-header h3 {
    margin: 0 0 1rem 0;
    font-size: 1.125rem;
    font-weight: 600;
    color: #111827;
}

.selected-versions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.selected-version {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    background: #f3f4f6;
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.version-label {
    font-weight: 500;
    color: #374151;
}

.version-value {
    color: #4b5563;
}

.remove-version {
    border: none;
    background: none;
    color: #6b7280;
    cursor: pointer;
    padding: 0.125rem 0.25rem;
    font-size: 1rem;
    line-height: 1;
}

.remove-version:hover {
    color: #ef4444;
}

/* Timeline Styles */
.version-timeline {
    position: relative;
    padding: 2rem 1rem;
    overflow-x: auto;
    cursor: grab;
    user-select: none;
}

.version-timeline.active {
    cursor: grabbing;
}

.timeline-track {
    position: relative;
    height: 2px;
    background: #e5e7eb;
    margin: 0 2rem;
}

.timeline-point {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
}

.timeline-point::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: #fff;
    border: 2px solid #6b7280;
    border-radius: 50%;
    transition: all 0.2s;
}

.timeline-point.selected::before {
    background: #3b82f6;
    border-color: #3b82f6;
}

.impact-indicator {
    position: absolute;
    top: -24px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    border: 2px solid rgba(59, 130, 246, 0.2);
    transition: all 0.2s;
}

.timeline-labels {
    display: flex;
    position: absolute;
    bottom: 0.5rem;
    left: 0;
    right: 0;
    padding: 0 2rem;
}

.timeline-label {
    position: absolute;
    transform: translateX(-50%);
    text-align: center;
    min-width: 100px;
}

.version-name {
    font-weight: 500;
    font-size: 0.875rem;
    color: #374151;
    margin-bottom: 0.25rem;
}

.version-date {
    font-size: 0.75rem;
    color: #6b7280;
}

/* Comparison Actions */
.comparison-actions {
    display: flex;
    gap: 0.75rem;
}

.compare-button,
.rollback-button {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.compare-button {
    background-color: #3b82f6;
    color: white;
}

.compare-button:hover {
    background-color: #2563eb;
}

.rollback-button {
    background-color: #6b7280;
    color: white;
}

.rollback-button:hover {
    background-color: #4b5563;
}

/* Comparison Results */
.comparison-content {
    padding: 1rem;
}

.comparison-placeholder {
    text-align: center;
    padding: 2rem;
    color: #6b7280;
    font-size: 0.875rem;
}

.results-loading {
    text-align: center;
    padding: 2rem;
    color: #6b7280;
}

.diff-section {
    border: 1px solid #e5e7eb;
    border-radius: 0.375rem;
    margin-bottom: 1rem;
    overflow: hidden;
}

.diff-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: #f9fafb;
    border-bottom: 1px solid #e5e7eb;
}

.diff-header h4 {
    margin: 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
}

.diff-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: #6b7280;
}

.change-item {
    padding: 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.change-item:last-child {
    border-bottom: none;
}

.change-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.change-type {
    padding: 0.25rem 0.5rem;
    background: #f3f4f6;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: #374151;
}

.change-file {
    font-family: ui-monospace, monospace;
    font-size: 0.875rem;
    color: #4b5563;
}

.change-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.old-value,
.new-value {
    background: #f9fafb;
    border-radius: 0.375rem;
    overflow: hidden;
}

.value-header {
    padding: 0.5rem;
    background: #f3f4f6;
    font-size: 0.75rem;
    font-weight: 500;
    color: #4b5563;
    border-bottom: 1px solid #e5e7eb;
}

.change-content pre {
    margin: 0;
    padding: 0.75rem;
    font-size: 0.875rem;
    line-height: 1.5;
    overflow-x: auto;
}

/* Warning/Error Messages */
.comparison-warning,
.comparison-error {
    position: fixed;
    top: 1rem;
    right: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    animation: slideIn 0.3s ease-out;
}

.comparison-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #f59e0b;
}

.comparison-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .comparison-header {
        padding: 0.75rem;
    }

    .selected-versions {
        flex-direction: column;
    }

    .comparison-actions {
        flex-direction: column;
    }

    .compare-button,
    .rollback-button {
        width: 100%;
    }

    .change-content {
        grid-template-columns: 1fr;
    }

    .timeline-label {
        min-width: 80px;
    }
}