/* Version Compare View Styles */

.version-compare-view {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--bg-secondary);
}

/* TTL Expiration Warning (P0 bugfix #2) */
.version-ttl-warning {
    background: linear-gradient(to right, #fff3cd, #ffeaa7);
    border: 1px solid #ffc107;
    border-left: 4px solid #ff9800;
    color: #856404;
    padding: var(--space-3) var(--space-4);
    margin: var(--space-4);
    margin-bottom: 0;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.version-ttl-warning::before {
    content: '⚠️';
    font-size: 16px;
    flex-shrink: 0;
}

/* Header */
.version-compare-header {
    display: flex;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    min-height: 44px;
    margin: 0 var(--space-4);
    padding-right: 12px; /* Компенсация ширины scrollbar в aligned container */
}

.version-compare-header-cell {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
}

.version-compare-header-divider {
    width: 1px;
    background: var(--border-color);
    flex-shrink: 0;
    margin: var(--space-2) 0;
}

.version-compare-actions {
    display: flex;
    gap: var(--space-2);
}

.version-compare-actions button {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.version-compare-restore {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-2);
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.version-compare-restore:hover {
    background: var(--accent-hover);
}

.version-compare-restore svg {
    flex-shrink: 0;
}

.version-compare-close {
    position: relative; /* Required for data-tooltip CSS */
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    margin-left: auto;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
}

.version-compare-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Content area */
.version-compare-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Aligned comparison view */
.version-compare-aligned {
    flex: 1;
    overflow-y: scroll;
    background: var(--bg-secondary);
}

.compare-row {
    display: flex;
    margin: 0 var(--space-4) var(--space-2);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.compare-row:first-child {
    margin-top: var(--space-4);
}

.compare-row:last-child {
    margin-bottom: 0;
}

.compare-cell {
    flex: 1;
    padding: var(--space-3);
    min-height: 40px;
}

.compare-cell-left {
    background: var(--bg-primary);
}

.compare-cell-right {
    background: var(--bg-primary);
}

.compare-cell-divider {
    width: 1px;
    background: var(--border-color);
    flex-shrink: 0;
}

.compare-cell-placeholder {
    flex: 1;
    padding: var(--space-3);
    min-height: 40px;
    background: var(--bg-tertiary);
}

/* Row type backgrounds */
.compare-row-added .compare-cell-left {
    background: rgba(34, 197, 94, 0.05);
}

.compare-row-added .compare-cell-right {
    background: var(--bg-tertiary);
}

.compare-row-deleted .compare-cell-left {
    background: var(--bg-tertiary);
}

.compare-row-deleted .compare-cell-right {
    background: rgba(239, 68, 68, 0.05);
}

.compare-row-modified .compare-cell-left,
.compare-row-modified .compare-cell-right {
    background: rgba(245, 158, 11, 0.05);
}

/* Panels */
.version-compare-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.version-compare-divider {
    width: 1px;
    background: var(--border-color);
    flex-shrink: 0;
}

/* Labels */
.version-compare-label {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    min-height: 44px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.label-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.label-badge.current {
    background: rgba(33, 150, 243, 0.15);
    color: var(--accent-color);
}

.label-badge.version {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning-color, #f59e0b);
}

.version-label-meta {
    font-size: 11px;
    color: var(--text-secondary);
}

/* Document content */
.version-compare-document {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4);
    background: var(--bg-primary);
}

/* Pages */
.compare-page {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    overflow: hidden;
}

.compare-page:last-child {
    margin-bottom: 0;
}

.compare-page-header {
    padding: var(--space-2) var(--space-3);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.compare-page-content {
    padding: var(--space-4);
}

/* Blocks */
.compare-block {
    margin-bottom: var(--space-3);
    line-height: 1.6;
    color: var(--text-primary);
}

.compare-block:last-child {
    margin-bottom: 0;
}

.compare-block p {
    margin: 0 0 var(--space-2);
}

.compare-block p:last-child {
    margin-bottom: 0;
}

.compare-block-heading {
    font-weight: 600;
}

.compare-block img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
}

.compare-block pre {
    background: var(--bg-tertiary);
    padding: var(--space-3);
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-family: monospace;
    font-size: 13px;
}

.compare-block ul,
.compare-block ol {
    margin: 0;
    padding-left: var(--space-5);
}

.compare-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--space-3) 0;
}

/* Empty states */
.compare-empty,
.compare-empty-page {
    color: var(--text-tertiary);
    font-style: italic;
    text-align: center;
    padding: var(--space-4);
}

/* ============================================
   Diff Highlighting Styles
   ============================================ */

/* Block-level diff indicators */
.diff-block-added {
    border-left: 3px solid var(--success-color, #22c55e);
    background: rgba(34, 197, 94, 0.08);
    border-radius: var(--radius-sm);
    padding-left: var(--space-2);
}

.diff-block-deleted {
    border-left: 3px solid var(--error-color, #ef4444);
    background: rgba(239, 68, 68, 0.08);
    border-radius: var(--radius-sm);
    padding-left: var(--space-2);
}

.diff-block-modified {
    border-left: 3px solid var(--warning-color, #f59e0b);
    background: rgba(245, 158, 11, 0.08);
    border-radius: var(--radius-sm);
    padding-left: var(--space-2);
}

/* Inline diff highlighting */
.diff-added {
    background-color: rgba(34, 197, 94, 0.25);
    color: var(--success-color, #16a34a);
    padding: 1px 2px;
    border-radius: 2px;
}

.diff-deleted {
    background-color: rgba(239, 68, 68, 0.25);
    color: var(--error-color, #dc2626);
    text-decoration: line-through;
    padding: 1px 2px;
    border-radius: 2px;
}

/* Paragraph styles for compare blocks */
.compare-block.style-heading-1 {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.3;
}

.compare-block.style-heading-2 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.35;
}

.compare-block.style-heading-3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
}

.compare-block.style-quote {
    font-style: italic;
    padding-left: 16px;
    border-left: 3px solid var(--border-color);
    color: var(--text-secondary);
}

.compare-block.style-code {
    font-family: 'Consolas', 'Monaco', monospace;
    background: var(--bg-tertiary);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
}

/* Formatting change indicator (P1 bugfix #6) */
.diff-formatting-changed {
    display: inline-block;
    padding: 2px 8px;
    margin-right: 8px;
    margin-bottom: 4px;
    border-radius: 3px;
    background-color: rgba(251, 191, 36, 0.15);
    border: 1px solid rgba(251, 191, 36, 0.4);
    color: #b45309;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    vertical-align: middle;
}

.diff-formatting-changed::before {
    content: '✨';
    margin-right: 4px;
}

/* Style change badge */
.diff-style-badge {
    display: inline-block;
    padding: 2px 6px;
    margin-right: 8px;
    border-radius: 3px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    vertical-align: middle;
}

.diff-style-badge.diff-added {
    background-color: rgba(34, 197, 94, 0.2);
    color: var(--success-color, #16a34a);
    text-decoration: none;
}

.diff-style-badge.diff-deleted {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--error-color, #dc2626);
    text-decoration: line-through;
}

/* Stats bar (P2) */
.version-compare-stats {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-2) var(--space-4);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    font-weight: 500;
}

.version-compare-stats .stat-added {
    color: var(--success-color, #22c55e);
}

.version-compare-stats .stat-modified {
    color: var(--warning-color, #f59e0b);
}

.version-compare-stats .stat-deleted {
    color: var(--error-color, #ef4444);
}

/* Header/Footer comparison section (P2) */
.version-compare-hf {
    margin: var(--space-3) var(--space-4);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.hf-compare-title {
    padding: var(--space-2) var(--space-3);
    background: var(--bg-tertiary);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.hf-compare-row {
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--border-color);
}

.hf-compare-row:last-child {
    border-bottom: none;
}

.hf-compare-label {
    padding: var(--space-2) var(--space-3);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
}

.hf-compare-cells {
    display: flex;
}

.hf-compare-cell {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    font-size: 13px;
    line-height: 1.5;
}

.hf-compare-current {
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
}

.hf-compare-version {
    background: var(--bg-primary);
}

.hf-compare-row.diff-added .hf-compare-current {
    background: rgba(34, 197, 94, 0.08);
}

.hf-compare-row.diff-added .hf-compare-version {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
}

.hf-compare-row.diff-deleted .hf-compare-current {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
}

.hf-compare-row.diff-deleted .hf-compare-version {
    background: rgba(239, 68, 68, 0.08);
}

.hf-compare-row.diff-modified .hf-compare-current,
.hf-compare-row.diff-modified .hf-compare-version {
    background: rgba(245, 158, 11, 0.05);
}

/* Table comparison (P1) */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.compare-table th,
.compare-table td {
    border: 1px solid var(--border-color);
    padding: var(--space-2);
    text-align: left;
}

.compare-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
    .version-compare-content {
        flex-direction: column;
    }

    .version-compare-divider {
        width: 100%;
        height: 1px;
    }

    .version-compare-panel {
        max-height: 50vh;
    }
}