/* Flow Mode (Writing Mode) Styles */

/* ============================================================================
   Mode Toggle Button
   ============================================================================ */
.mode-toggle-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border: 1px solid var(--border-color, #ddd);
    border-radius: 4px;
    background: var(--bg-primary, #fff);
    cursor: pointer;
    transition: all 0.2s;
}

.mode-toggle-btn:hover {
    background: var(--bg-hover, #f5f5f5);
    border-color: var(--primary, #2196f3);
}

.mode-toggle-btn .mode-icon {
    display: none;
    width: 16px;
    height: 16px;
}

.mode-toggle-btn[data-mode='commenting'] .mode-icon-commenting,
.mode-toggle-btn[data-mode='writing'] .mode-icon-writing {
    display: block;
}

.mode-toggle-btn .mode-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary, #333);
}

/* ============================================================================
   Page Container Mode States
   ============================================================================ */
.page-container.mode-commenting {
    /* PDF Mode - default behavior */
}

.page-container.mode-writing {
    /* Writing Mode - flow layout */
    /* overflow: visible inherited from base - allows per-page rulers to show */
}

/* content-area in writing mode: above rulers so flow-block-controls are visible */
.page-container.mode-writing .content-area {
    z-index: 11; /* Above rulers (z-index: 10) */
}

/* dom-layer inside content-area: no padding needed, content-area handles margins */
.page-container.mode-writing .content-area .dom-layer {
    position: relative;
    width: 100%;
    height: 100%; /* CRITICAL: inherit content-area height for multi-column to work */
    min-height: 100%;
    padding: 0; /* No padding - content-area boundaries are the margins */
    box-sizing: border-box;
    overflow: visible; /* Let content-area handle clipping */
}

/* Hide PDF layer in writing mode */
.page-container.mode-writing .pdf-layer {
    display: none;
}

/* ============================================================================
   Flow Blocks Container
   ============================================================================ */
.flow-blocks-container {
    display: flex;
    flex-direction: column;
    gap: 4px;
    /* No padding-bottom - margins from document settings define content area */
    height: 100%; /* Required for multi-column layout to work */
    width: 100%;
    max-width: 100%; /* Prevent overflow outside parent */
    box-sizing: border-box;
}

/* ============================================================================
   Flow Block
   ============================================================================ */
.flow-block {
    position: relative;
    border-radius: 2px;
    transition:
        background-color 0.15s,
        box-shadow 0.15s;
}

.flow-block:hover,
.flow-block.controls-hover {
    background-color: rgba(33, 150, 243, 0.04);
}

.flow-block:hover .flow-block-drag-handle,
.flow-block.controls-hover .flow-block-drag-handle {
    opacity: 1;
}

.flow-block.selected {
    background-color: rgba(33, 150, 243, 0.08);
    box-shadow: inset 0 0 0 2px var(--primary, #2196f3);
}

.flow-block.editing {
    background-color: rgba(33, 150, 243, 0.06);
    box-shadow: inset 0 0 0 2px var(--primary, #2196f3);
}

.flow-block.dragging {
    opacity: 0.5;
}

.flow-block.drag-over {
    box-shadow: 0 -2px 0 0 var(--primary, #2196f3);
}

/* ============================================================================
   Flow Block Controls Container
   ============================================================================ */
.flow-block-controls {
    position: absolute;
    left: -106px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 4px;
    background: var(--bg-primary, #fff);
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    opacity: 0;
    pointer-events: none; /* Don't capture hover when hidden */
    transition: opacity 0.15s;
    z-index: 100; /* Above ruler (which has no z-index) */
}

/* Invisible bridge between controls panel and block - prevents hover loss when moving cursor */
.flow-block-controls::after {
    content: '';
    position: absolute;
    top: -8px;
    bottom: -8px;
    right: -20px;
    width: 20px;
}

.flow-block:hover .flow-block-controls,
.flow-block.controls-hover .flow-block-controls {
    opacity: 1;
    pointer-events: auto; /* Enable interaction when visible */
}

/* ============================================================================
   Flow Block Drag Handle (Hamburger)
   ============================================================================ */
.flow-block-drag-handle {
    position: relative; /* Required for data-tooltip CSS */
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    cursor: grab;
    transition: background-color 0.15s;
    color: var(--text-tertiary, #999);
}

.flow-block-drag-handle:hover {
    background-color: var(--bg-hover, #f0f0f0);
    color: var(--text-secondary, #666);
}

.flow-block-drag-handle:active {
    cursor: grabbing;
}

/* ============================================================================
   Flow Block Add Button (+)
   ============================================================================ */
.flow-block-add-btn {
    position: relative; /* Required for data-tooltip CSS */
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    transition: background-color 0.15s;
    color: var(--text-tertiary, #999);
}

.flow-block-add-btn:hover {
    background-color: var(--bg-hover, #f0f0f0);
    color: var(--text-secondary, #666);
}

/* ============================================================================
   Flow Block PageBreak Button
   ============================================================================ */
.flow-block-pagebreak-btn {
    position: relative; /* Required for data-tooltip CSS */
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    transition: background-color 0.15s;
    color: var(--text-tertiary, #999);
    padding: 0;
}

.flow-block-pagebreak-btn:hover {
    background: var(--bg-hover, #f0f0f0);
    color: var(--text-primary, #333);
}

.flow-block-pagebreak-btn.active {
    color: var(--primary, #2196f3);
    background: rgba(33, 150, 243, 0.1);
}

.flow-block-pagebreak-btn .material-icons {
    font-size: 16px;
}

/* PageBreak status shown via button highlight (.active class on pagebreak button) */
/* No visual indicator element needed - button state is sufficient */

.flow-block.locked {
    opacity: 0.7;
}

.flow-block.locked::after {
    content: '';
    position: absolute;
    top: 4px;
    right: 4px;
    width: 12px;
    height: 12px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23999'%3E%3Cpath d='M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zm-6 9c-1.1 0-2-.9-2-2s.9-2 2-2 2 .9 2 2-.9 2-2 2zm3.1-9H8.9V6c0-1.71 1.39-3.1 3.1-3.1 1.71 0 3.1 1.39 3.1 3.1v2z'/%3E%3C/svg%3E");
    background-size: contain;
}

/* ============================================================================
   Continued Blocks (split across pages)
   ============================================================================ */
/* Block that continues to next page */
.flow-block.continued-to::after {
    content: '↓ продолжение на след. стр.';
    position: absolute;
    bottom: -18px;
    right: 0;
    font-size: 10px;
    color: var(--primary, #2196f3);
    opacity: 0.7;
    pointer-events: none;
}

/* Block that continues from previous page */
.flow-block.continued-from::before {
    content: '↑ продолжение с пред. стр.';
    position: absolute;
    top: -18px;
    right: 0;
    font-size: 10px;
    color: var(--primary, #2196f3);
    opacity: 0.7;
    pointer-events: none;
}

/* Visual link indicator on drag handle for continued blocks */
.flow-block.continued-from .flow-block-drag-handle,
.flow-block.continued-to .flow-block-drag-handle {
    color: var(--primary, #2196f3);
}

/* Chain indicator badge */
.flow-block-chain-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 16px;
    height: 16px;
    background: var(--primary, #2196f3);
    color: white;
    border-radius: 50%;
    font-size: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.15s;
}

.flow-block:hover .flow-block-chain-badge,
.flow-block.continued-from .flow-block-chain-badge,
.flow-block.continued-to .flow-block-chain-badge {
    opacity: 1;
}

/* ============================================================================
   Flow Block Wrapper (Number + Content)
   ============================================================================ */
.flow-block-wrapper {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

/* ============================================================================
   Flow Block Number
   ============================================================================ */
.flow-block-number {
    flex-shrink: 0;
    min-width: 28px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary, #666);
    text-align: right;
    line-height: 1.6;
    user-select: none;
}

/* ============================================================================
   Flow Block Content
   ============================================================================ */
.flow-block-content {
    flex: 1;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary, #333);
    outline: none;
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word; /* Force break for long words */
    max-width: 100%; /* Prevent overflow */
}

.flow-block-content.empty::before {
    content: attr(data-placeholder);
    color: var(--text-tertiary, #999);
    pointer-events: none;
}

/* ============================================================================
   Flow Heading Styles
   ============================================================================ */
.flow-heading {
    margin: 0;
    font-weight: 600;
    color: var(--text-primary, #333);
}

h1.flow-heading {
    font-size: 24px;
    line-height: 1.3;
    margin-bottom: 8px;
}

h2.flow-heading {
    font-size: 20px;
    line-height: 1.35;
    margin-bottom: 6px;
}

h3.flow-heading {
    font-size: 16px;
    line-height: 1.4;
    margin-bottom: 4px;
}

h4.flow-heading,
h5.flow-heading,
h6.flow-heading {
    font-size: 14px;
    line-height: 1.5;
}

/* ============================================================================
   Flow Image
   ============================================================================ */
.flow-image {
    max-width: 100%;
    height: auto;
    display: block;
}

.flow-image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--bg-secondary, #f5f5f5);
    border: 2px dashed var(--border-color, #ddd);
    border-radius: 4px;
    color: var(--text-tertiary, #999);
    cursor: pointer;
}

.flow-image-placeholder:hover {
    border-color: var(--primary, #2196f3);
    color: var(--primary, #2196f3);
}

.flow-image-placeholder svg {
    margin-bottom: 8px;
}

/* ============================================================================
   Flow Divider
   ============================================================================ */
.flow-divider {
    border: none;
    border-top: 1px solid var(--border-color, #ddd);
    margin: 8px 0;
}

/* ============================================================================
   Flow Code Block
   ============================================================================ */
.flow-code {
    margin: 0;
    padding: 12px;
    background: var(--bg-secondary, #f5f5f5);
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
    overflow-x: auto;
}

.flow-code code {
    font-family: inherit;
}

/* ============================================================================
   Flow Table
   ============================================================================ */
.flow-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.flow-table th,
.flow-table td {
    border: 1px solid var(--border-color, #ddd);
    padding: 8px 12px;
    text-align: left;
}

.flow-table th {
    background: var(--bg-secondary, #f5f5f5);
    font-weight: 600;
}

/* ============================================================================
   Flow List
   ============================================================================ */
.flow-list {
    margin: 0;
    padding-left: 24px;
}

.flow-list li {
    margin-bottom: 4px;
    line-height: 1.6;
}

/* ============================================================================
   Flow Spacer
   ============================================================================ */
.flow-spacer {
    background: transparent;
}

/* ============================================================================
   Numbering Menu
   ============================================================================ */
.numbering-menu {
    position: fixed;
    z-index: 10000;
    min-width: 200px;
    background: var(--bg-primary, #fff);
    border: 1px solid var(--border-color, #ddd);
    border-radius: 6px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    padding: 4px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.15s;
}

.numbering-menu.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.numbering-menu-header {
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-tertiary, #999);
    border-bottom: 1px solid var(--border-color, #ddd);
}

.numbering-menu-items {
    padding: 4px 0;
}

.numbering-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    cursor: pointer;
    transition: background-color 0.15s;
}

.numbering-menu-item:hover {
    background: var(--bg-hover, #f5f5f5);
}

.numbering-menu-item.selected {
    background: rgba(33, 150, 243, 0.08);
}

.numbering-menu-icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary, #666);
}

.numbering-menu-label {
    flex: 1;
    font-size: 13px;
    color: var(--text-primary, #333);
}

.numbering-menu-preview {
    font-size: 12px;
    color: var(--text-tertiary, #999);
    font-family: 'Consolas', monospace;
}

.numbering-menu-check {
    font-size: 12px;
    color: var(--primary, #2196f3);
}

/* ============================================================================
   Toolbar Mode-Specific Button Visibility
   ============================================================================ */
.toolbar-group-mode {
    /* Divider created by JS after this group */
}

/* Writing mode tools group - hidden by default (PDF mode) */
.toolbar-group-writing {
    display: none;
}

/* Numbering button with dropdown arrow */
#numbering-btn {
    display: flex;
    align-items: center;
    gap: 2px;
}

#numbering-btn .dropdown-arrow {
    opacity: 0.6;
    margin-left: 2px;
}

/* ============================================================================
   Print Styles for Flow Mode
   ============================================================================ */
@media print {
    .flow-blocks-container {
        page-break-inside: auto;
    }

    .flow-block {
        page-break-inside: avoid;
        break-inside: avoid;
    }
}

/* ============================================================================
   Comments
   ============================================================================ */

/* Comment indicator on block */
.flow-block-comment-indicator {
    position: absolute;
    top: 4px;
    right: -24px;
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 2px 4px;
    background: var(--warning, #ff9800);
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 10px;
    font-weight: 600;
    z-index: 10;
    transition: all 0.2s;
}

.flow-block-comment-indicator:hover {
    background: var(--warning-dark, #f57c00);
    transform: scale(1.1);
}

.flow-block-comment-indicator svg {
    width: 12px;
    height: 12px;
}

.flow-block-comment-indicator .comment-count {
    min-width: 12px;
    text-align: center;
}

.flow-block.has-comments {
    border-right: 3px solid var(--warning, #ff9800);
}

/* Comment Popup */
.comment-popup {
    position: fixed;
    min-width: 280px;
    width: auto;
    max-width: 420px;
    max-height: 400px;
    background: var(--bg-primary, white);
    border: 1px solid var(--border-color, #e0e0e0);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

.comment-popup-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color, #e0e0e0);
    background: var(--bg-secondary, #f5f5f5);
    border-radius: 8px 8px 0 0;
}

.comment-popup-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary, #333);
}

.comment-popup-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-secondary, #666);
    line-height: 1;
    padding: 0;
}

.comment-popup-close:hover {
    color: var(--text-primary, #333);
}

.comment-popup-body {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

/* Comment list */
.comment-list {
    margin-bottom: 12px;
}

.comment-item {
    padding: 10px;
    background: var(--bg-secondary, #f9f9f9);
    border-radius: 6px;
    margin-bottom: 8px;
}

.comment-item.resolved {
    opacity: 0.6;
    background: var(--bg-tertiary, #f0f0f0);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.comment-author {
    font-weight: 600;
    font-size: 12px;
    color: var(--text-primary, #333);
}

.comment-date {
    font-size: 11px;
    color: var(--text-secondary, #888);
}

.comment-text {
    font-size: 13px;
    line-height: 1.4;
    color: var(--text-primary, #333);
    margin-bottom: 8px;
    white-space: pre-wrap;
}

.comment-actions {
    display: flex;
    gap: 8px;
}

.comment-actions button {
    padding: 4px 8px;
    font-size: 11px;
    border: 1px solid var(--border-color, #ddd);
    border-radius: 4px;
    background: var(--bg-primary, white);
    cursor: pointer;
    transition: all 0.2s;
}

.comment-actions button:hover {
    background: var(--bg-hover, #f0f0f0);
}

.comment-actions .resolve-btn:hover {
    background: var(--success-light, #e8f5e9);
    border-color: var(--success, #4caf50);
    color: var(--success, #4caf50);
}

.comment-actions .delete-btn:hover {
    background: var(--error-light, #ffebee);
    border-color: var(--error, #f44336);
    color: var(--error, #f44336);
}

/* Add comment form */
.add-comment-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.comment-input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border-color, #ddd);
    border-radius: 6px;
    font-size: 13px;
    font-family: inherit;
    resize: vertical;
    min-height: 50px;
}

.comment-input:focus {
    outline: none;
    border-color: var(--primary, #2196f3);
}

.submit-comment-btn {
    align-self: flex-end;
    padding: 6px 16px;
    background: var(--primary, #2196f3);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.submit-comment-btn:hover {
    background: var(--primary-dark, #1976d2);
}

.submit-comment-btn:disabled {
    background: var(--disabled, #ccc);
    cursor: not-allowed;
}

/* Empty state */
.comment-list-empty {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary, #888);
    font-size: 13px;
}

/* Dark theme */
[data-theme='dark'] .flow-block-comment-indicator {
    background: var(--warning, #ff9800);
}

[data-theme='dark'] .comment-popup {
    background: var(--bg-primary);
    border-color: var(--border-color);
}

[data-theme='dark'] .comment-item {
    background: var(--bg-secondary);
}

[data-theme='dark'] .comment-input {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* Mobile responsive for comments */
@media (max-width: 768px) {
    .comment-popup {
        max-width: calc(100vw - 32px);
        right: 16px !important;
        left: 16px !important;
    }
}

/* ============================================================================
   Footnotes
   ============================================================================ */

/* Footnote reference in text (superscript) */
.footnote-ref {
    font-size: 0.75em;
    vertical-align: super;
    line-height: 0;
    cursor: pointer;
    color: var(--primary, #0066cc);
    text-decoration: none;
    padding: 0 1px;
    transition: color 0.15s;
}

.footnote-ref:hover {
    color: var(--primary-dark, #004499);
    text-decoration: underline;
}

/* Footnote area at bottom of page */
.footnote-area {
    position: absolute;
    bottom: var(--margin-bottom, 76px);
    left: var(--margin-left, 57px);
    right: var(--margin-right, 57px);
    border-top: 1px solid var(--border-color, #333);
    padding-top: 12px;
    margin-top: 24px;
    font-size: 11px;
    line-height: 1.5;
    color: var(--text-secondary, #666);
}

.footnote-area:empty {
    display: none;
}

/* Individual footnote */
.footnote {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    padding: 4px 0;
    transition: background-color 0.3s;
}

.footnote:last-child {
    margin-bottom: 0;
}

/* Footnote number */
.footnote-number {
    flex-shrink: 0;
    min-width: 20px;
    font-weight: 600;
    color: var(--primary, #0066cc);
    cursor: pointer;
    transition: color 0.15s;
}

.footnote-number:hover {
    color: var(--primary-dark, #004499);
    text-decoration: underline;
}

/* Footnote content */
.footnote-content {
    flex: 1;
    outline: none;
    color: var(--text-primary, #333);
}

.footnote-content:empty::before {
    content: 'Type footnote text...';
    color: var(--text-tertiary, #999);
    font-style: italic;
}

.footnote-content:focus {
    background-color: rgba(33, 150, 243, 0.05);
    border-radius: 2px;
}

/* Format Painter active state */
.toolbar-btn.format-painter-active,
#format-painter-btn.active {
    background-color: var(--primary, #2196f3);
    color: white;
}

#format-painter-btn.locked {
    background-color: var(--primary-dark, #1976d2);
    box-shadow: inset 0 0 0 2px var(--primary, #2196f3);
}

/* Dark theme footnotes */
[data-theme='dark'] .footnote-area {
    border-top-color: var(--border-color);
}

[data-theme='dark'] .footnote-ref {
    color: var(--primary-light, #64b5f6);
}

[data-theme='dark'] .footnote-number {
    color: var(--primary-light, #64b5f6);
}

[data-theme='dark'] .footnote-content {
    color: var(--text-primary);
}

/* ============================================================================
   Paragraph Styles
   ============================================================================ */

/* Normal style - default */
.flow-block.style-normal .flow-block-content,
.flow-block:not([data-style-id]) .flow-block-content {
    font-size: 14px;
    font-weight: normal;
    line-height: 1.6;
    color: var(--text-primary, #333);
}

/* Heading 1 */
.flow-block.style-heading-1 .flow-block-content {
    font-size: 24px;
    font-weight: bold;
    line-height: 1.3;
    color: var(--text-primary, #333);
    margin-top: 16px;
    margin-bottom: 8px;
}

/* Heading 2 */
.flow-block.style-heading-2 .flow-block-content {
    font-size: 20px;
    font-weight: bold;
    line-height: 1.35;
    color: var(--text-primary, #333);
    margin-top: 14px;
    margin-bottom: 6px;
}

/* Heading 3 */
.flow-block.style-heading-3 .flow-block-content {
    font-size: 16px;
    font-weight: bold;
    line-height: 1.4;
    color: var(--text-primary, #333);
    margin-top: 12px;
    margin-bottom: 4px;
}

/* Quote */
.flow-block.style-quote .flow-block-content {
    font-size: 14px;
    font-style: italic;
    line-height: 1.6;
    color: var(--text-secondary, #666);
    background-color: var(--bg-secondary, #f9f9f9);
    border-left: 4px solid var(--border-color, #ddd);
    padding-left: 16px;
    padding-top: 8px;
    padding-bottom: 8px;
    margin-top: 8px;
    margin-bottom: 8px;
}

/* Code */
.flow-block.style-code .flow-block-content {
    font-size: 13px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    line-height: 1.5;
    color: var(--text-primary, #333);
    background-color: var(--bg-secondary, #f5f5f5);
    padding: 12px;
    border-radius: 4px;
    margin-top: 8px;
    margin-bottom: 8px;
    white-space: pre-wrap;
}

/* Style indicator badge */
.flow-block[data-style-id]:not([data-style-id='normal'])::before {
    content: attr(data-style-id);
    position: absolute;
    top: -8px;
    left: 4px;
    font-size: 9px;
    padding: 1px 4px;
    background: var(--primary-light, #e3f2fd);
    color: var(--primary, #2196f3);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.15s;
    text-transform: capitalize;
}

.flow-block[data-style-id]:hover::before {
    opacity: 1;
}

/* Dark theme paragraph styles */
[data-theme='dark'] .flow-block.style-quote .flow-block-content {
    background-color: var(--bg-secondary);
    border-left-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme='dark'] .flow-block.style-code .flow-block-content {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

/* ============================================================================
   Multi-Column Layout
   ============================================================================ */

/* Container with multiple columns - MUST disable flexbox for columns to work! */
.flow-blocks-container.multi-column {
    display: block !important; /* Override flex - CSS columns don't work with flexbox */
    column-fill: auto;
    column-rule: 1px solid var(--border-color, #e0e0e0);
    /* Content clipped by parent dom-layer's overflow: hidden */
}

/* Blocks inside multi-column container */
.flow-blocks-container.multi-column .flow-block {
    margin-bottom: 16px; /* Extra space for the + button (which is at bottom: -12px) */
    /* NO break-inside: avoid — allow blocks to split between columns to fill space */
}

/* ============================================================================
   Float Images - ImageLayerManager styles
   ============================================================================ */

.image-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none; /* Let text underneath be selectable */
    z-index: 0; /* Base layer for float images container */
}

.float-image-wrapper {
    position: absolute;
    pointer-events: auto;
    box-sizing: border-box;
    cursor: move;
    transition: box-shadow 0.15s;
}

.float-image-wrapper:hover {
    box-shadow: 0 0 0 2px var(--primary, #2196f3);
}

.float-image-wrapper.selected {
    box-shadow:
        0 0 0 2px var(--primary, #2196f3),
        0 4px 12px rgba(33, 150, 243, 0.25);
}

.float-image-wrapper img {
    display: block;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* Wrap mode classes */
.float-image-wrapper.wrap-behind {
    /* z-index: 1 set inline - below dom-layer (z-index: 2) */
    /* Inserted into image-layer (before dom-layer in DOM) */
    /* Visual "behind" effect via reduced opacity */
    opacity: 0.6;
}

.float-image-wrapper.wrap-front {
    /* z-index: 100 set inline - on top of everything */
    /* Appended after dom-layer in DOM */
    pointer-events: auto;
}

.float-image-wrapper.wrap-wrap-left,
.float-image-wrapper.wrap-wrap-right {
    /* z-index: 1 set inline - below dom-layer (z-index: 2) */
    /* Inserted before dom-layer in DOM - text remains clickable on top */
}

/* Resize handles for float images */
.float-image-wrapper .resize-handle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary, #2196f3);
    border: 2px solid white;
    border-radius: 50%;
    display: block; /* Override base display: none from blocks.css */
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 10; /* Above img element */
}

.float-image-wrapper:hover .resize-handle,
.float-image-wrapper.selected .resize-handle {
    opacity: 1;
}

.float-image-wrapper .resize-handle.nw {
    top: -5px;
    left: -5px;
    cursor: nw-resize;
}
.float-image-wrapper .resize-handle.ne {
    top: -5px;
    right: -5px;
    cursor: ne-resize;
}
.float-image-wrapper .resize-handle.sw {
    bottom: -5px;
    left: -5px;
    cursor: sw-resize;
}
.float-image-wrapper .resize-handle.se {
    bottom: -5px;
    right: -5px;
    cursor: se-resize;
}

/* Wrap mode badge */
.float-image-wrapper .wrap-mode-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    padding: 2px 6px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 10px;
    border-radius: 3px;
    opacity: 0;
    transition: opacity 0.15s;
    pointer-events: none;
    z-index: 10; /* Above img element */
}

.float-image-wrapper:hover .wrap-mode-badge,
.float-image-wrapper.selected .wrap-mode-badge {
    opacity: 1;
}

/* Dark theme */
[data-theme='dark'] .float-image-wrapper:hover {
    box-shadow: 0 0 0 2px var(--primary-light, #64b5f6);
}

[data-theme='dark'] .float-image-wrapper.selected {
    box-shadow:
        0 0 0 2px var(--primary-light, #64b5f6),
        0 4px 12px rgba(100, 181, 246, 0.25);
}

[data-theme='dark'] .float-image-wrapper .resize-handle {
    background: var(--primary-light, #64b5f6);
}

/* Draw mode */
.page-container.image-draw-mode {
    cursor: crosshair !important;
}
.page-container.image-draw-mode * {
    cursor: crosshair !important;
}

.image-draw-preview {
    position: absolute;
    border: 2px dashed #0066cc;
    background: rgba(0, 102, 204, 0.1);
    pointer-events: none;
    z-index: 1000;
    box-sizing: border-box;
}

[data-theme='dark'] .image-draw-preview {
    border-color: #64b5f6;
    background: rgba(100, 181, 246, 0.1);
}

/* ============================================================================
   Image Toolbar UI - Floating Panel for Float Images
   ============================================================================ */

.image-toolbar {
    position: absolute;
    left: 50%;
    bottom: calc(100% + 8px);
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: var(--bg-primary, #fff);
    border: 1px solid var(--border-color, #e0e0e0);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    z-index: 1001;
    white-space: nowrap;
}

/* Position below when no space above */
.image-toolbar.below {
    bottom: auto;
    top: calc(100% + 8px);
}

/* Toolbar group */
.image-toolbar .toolbar-group {
    display: flex;
    align-items: center;
    gap: 2px;
}

/* Toolbar divider */
.image-toolbar .toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border-color, #e0e0e0);
    margin: 0 4px;
}

/* Toolbar button */
.image-toolbar .toolbar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-secondary, #666);
    transition: all 0.15s;
}

.image-toolbar .toolbar-btn:hover {
    background: var(--bg-hover, #f0f0f0);
    color: var(--text-primary, #333);
}

.image-toolbar .toolbar-btn.active {
    background: var(--primary-light, #e3f2fd);
    color: var(--primary, #2196f3);
}

.image-toolbar .toolbar-btn:active {
    transform: scale(0.95);
}

/* Delete button - danger style */
.image-toolbar .toolbar-btn-danger {
    color: var(--text-secondary, #666);
}

.image-toolbar .toolbar-btn-danger:hover {
    background: rgba(244, 67, 54, 0.1);
    color: var(--danger, #f44336);
}

/* Material icons in toolbar */
.image-toolbar .toolbar-btn .material-icons {
    font-size: 20px;
}

/* Arrow pointer for toolbar */
.image-toolbar::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -6px;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid var(--bg-primary, #fff);
    filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.1));
}

/* Arrow for below position */
.image-toolbar.below::after {
    bottom: auto;
    top: -6px;
    border-top: none;
    border-bottom: 6px solid var(--bg-primary, #fff);
}

/* Dark theme image toolbar */
[data-theme='dark'] .image-toolbar {
    background: var(--bg-primary);
    border-color: var(--border-color);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

[data-theme='dark'] .image-toolbar .toolbar-btn:hover {
    background: var(--bg-hover);
}

[data-theme='dark'] .image-toolbar .toolbar-btn.active {
    background: rgba(33, 150, 243, 0.2);
}

[data-theme='dark'] .image-toolbar::after {
    border-top-color: var(--bg-primary);
}

[data-theme='dark'] .image-toolbar.below::after {
    border-bottom-color: var(--bg-primary);
}

/* ============================================================================
   Dark Theme: Document Content (Paper) - Always Black Text
   Document content represents "paper" - must stay white bg with black text
   ============================================================================ */

/* Flow block content - main text */
[data-theme='dark'] .flow-block-content {
    color: #333;
}

/* Flow headings */
[data-theme='dark'] .flow-heading {
    color: #333;
}

/* Block number */
[data-theme='dark'] .flow-block-number {
    color: #666;
}

/* Paragraph styles */
[data-theme='dark'] .flow-block.style-normal .flow-block-content,
[data-theme='dark'] .flow-block:not([data-style-id]) .flow-block-content {
    color: #333;
}

[data-theme='dark'] .flow-block.style-heading-1 .flow-block-content,
[data-theme='dark'] .flow-block.style-heading-2 .flow-block-content,
[data-theme='dark'] .flow-block.style-heading-3 .flow-block-content {
    color: #333;
}

/* Footnote content */
[data-theme='dark'] .footnote-content {
    color: #333;
}

/* Flow list items */
[data-theme='dark'] .flow-list {
    color: #333;
}

/* Flow table cells */
[data-theme='dark'] .flow-table th,
[data-theme='dark'] .flow-table td {
    color: #333;
}