/* Document Editor Main Styles */

/* Override body to prevent page scroll */
body {
    padding: 0 !important;
    overflow: hidden;
}

/* Flex layout for app container - header takes natural height, content fills rest */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.document-editor-container {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0; /* Allow shrinking in flex context */
    background: var(--bg-secondary, #f5f5f5);
    overflow: hidden;
}

/* Editor Main Layout */
.editor-main {
    display: flex;
    flex: 1;
    min-height: 0; /* Allow shrinking in flex context */
    overflow: hidden;
}

/* Canvas Wrapper */
.editor-canvas-wrapper {
    flex: 1;
    overflow: auto;
    padding: 48px 24px 48px 24px; /* Symmetrical top/bottom padding (48px) for consistent gaps */
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

/* Pages Wrapper - contains pages (single, horizontal, or vertical mode) */
.pages-wrapper {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Horizontal view mode - pages displayed side by side with virtualization */
.pages-wrapper.horizontal {
    position: relative;
    /* Disable flexbox for absolute positioning of virtualized containers */
    display: block;
}

/* In horizontal mode, containers are absolutely positioned for virtualization */
.pages-wrapper.horizontal .page-container {
    position: absolute;
    top: 50px; /* Fixed top position (PAGE_GAP), not centered */
}

/* Vertical view mode - pages stacked vertically with virtualization */
.pages-wrapper.vertical {
    position: relative;
    /* Disable flexbox for absolute positioning of virtualized containers */
    display: block;
}

/* In vertical mode, containers are absolutely positioned for virtualization */
.pages-wrapper.vertical .page-container {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

/* Page Container - dimensions set dynamically by LayoutMenu */
.page-container {
    position: relative;
    /* Default A4 portrait - will be overridden by JS */
    width: 793.7px; /* 210mm at 96 DPI */
    height: 1122.52px; /* 297mm at 96 DPI */
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: visible; /* Allow per-page rulers to extend outside boundaries */
}

/* Right page in spread view */
.page-container.page-right {
    flex-shrink: 0;
}

/* Active page indicator in spread mode - soft blue glow */
.page-container.page-active {
    box-shadow:
        0 0 0 1px rgba(33, 150, 243, 0.4),
        0 0 8px rgba(33, 150, 243, 0.3),
        0 2px 8px rgba(0, 0, 0, 0.1);
}

/* All pages have same appearance - no dimming for inactive pages
   Document must always show real picture regardless of active page */

/* Readonly flow blocks on inactive page */
.page-container:not(.page-active) .flow-block-readonly {
    pointer-events: none;
    user-select: none;
}

/* Empty page placeholder (for spread view when no next page) */
.empty-page-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary, #999);
    font-size: 14px;
    font-style: italic;
}

/* Layers */
.pdf-layer,
.canvas-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.canvas-layer {
    z-index: 1;
}

/* Content Area: enforces physical margin boundaries
 * All content (dom-layer) is inside this container.
 * NOTE: overflow: visible allows flow-block-controls panel (positioned left: -106px) to be visible.
 * WASM LayoutEngine handles block distribution and splitting - visual overflow is prevented by proper pagination.
 * UI elements (drag handle, pagebreak btn) are positioned outside block boundaries. */
.content-area {
    position: absolute;
    top: var(--margin-top, 76px);
    bottom: var(--margin-bottom, 76px);
    left: var(--margin-left, 57px);
    right: var(--margin-right, 57px);
    overflow: visible;
    z-index: 2;
}

.content-area .dom-layer {
    position: relative;
    width: 100%;
    height: 100%;
    padding: 0;
}

.selection-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    pointer-events: none;
}

/* Page margins - interactive lines */
.margin-line {
    position: absolute;
    background: rgba(0, 0, 0, 0.08);
    pointer-events: none;
    z-index: 5;
    transition:
        background-color 0.15s,
        box-shadow 0.15s;
}

.margin-line.horizontal {
    height: calc(1px / var(--editor-zoom, 1));
    left: 0;
    right: 0;
}

.margin-line.vertical {
    width: calc(1px / var(--editor-zoom, 1));
    top: 0;
    bottom: 0;
}

/* Margin line positions (CSS custom properties set by JS in px for exact ruler alignment) */
/* Default values: 20mm = 75.59px, 15mm = 56.69px (at 96 DPI: mm * 96 / 25.4) */
.margin-line.top {
    top: var(--margin-top, 75.59px);
}
.margin-line.bottom {
    bottom: var(--margin-bottom, 75.59px);
}
.margin-line.left {
    left: var(--margin-left, 56.69px);
}
.margin-line.right {
    right: var(--margin-right, 56.69px);
}

/* Highlighted state when handle is hovered/active */
.margin-line.active {
    background: var(--primary-color, #2196f3);
    box-shadow: 0 0 4px rgba(33, 150, 243, 0.5);
}

/* Margin handles on rulers */
.margin-handle {
    position: absolute;
    z-index: 200;
    cursor: pointer;
    transition:
        opacity 0.15s,
        background-color 0.15s;
}

/* Horizontal ruler handles (for left/right margins) - above ruler */
.ruler-horizontal .margin-handle {
    width: 12px;
    height: 12px;
    top: -10px;
}

.ruler-horizontal .margin-handle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6px;
    height: 6px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 50%;
    transition: background-color 0.15s;
}

.ruler-horizontal .margin-handle:hover::before,
.ruler-horizontal .margin-handle.active::before {
    background: var(--primary-color, #2196f3);
}

.ruler-horizontal .margin-handle.left {
    left: var(--margin-left, 56.69px);
    transform: translateX(-50%);
    cursor: ew-resize;
}

.ruler-horizontal .margin-handle.right {
    right: var(--margin-right, 56.69px);
    transform: translateX(50%);
    cursor: ew-resize;
}

/* Vertical ruler handles (for top/bottom margins) - left of ruler */
.ruler-vertical .margin-handle {
    width: 12px;
    height: 12px;
    left: -10px;
}

.ruler-vertical .margin-handle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 6px;
    height: 6px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 50%;
    transition: background-color 0.15s;
}

.ruler-vertical .margin-handle:hover::before,
.ruler-vertical .margin-handle.active::before {
    background: var(--primary-color, #2196f3);
}

.ruler-vertical .margin-handle.top {
    top: var(--margin-top, 75.59px);
    transform: translateY(-50%);
    cursor: ns-resize;
}

.ruler-vertical .margin-handle.bottom {
    bottom: var(--margin-bottom, 75.59px);
    transform: translateY(50%);
    cursor: ns-resize;
}

/* Dragging state for margin handles */
.margin-handle.dragging::before {
    background: var(--primary-color, #2196f3) !important;
    transform: translate(-50%, -50%) scale(1.2);
}

/* Hide handles until document is fully loaded (prevents flash on page reload) */
.margin-handle,
.indent-handle,
.indent-handles-container,
.indent-add-btn {
    opacity: 0;
    pointer-events: none;
}

/* Show handles only when document is loaded */
.editor-canvas.document-loaded .margin-handle,
.editor-canvas.document-loaded .indent-handle,
.editor-canvas.document-loaded .indent-handles-container,
.editor-canvas.document-loaded .indent-add-btn {
    opacity: 1;
    pointer-events: auto;
}

/* Keep container pointer-events none even when loaded */
.editor-canvas.document-loaded .indent-handles-container {
    pointer-events: none;
}

.editor-canvas.document-loaded .indent-handles-container > * {
    pointer-events: auto;
}

/* Grid overlay (when enabled) */
.page-container.show-grid {
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 8px 8px;
}

/* Zoom indicator */
.zoom-indicator {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--bg-primary, white);
    padding: 8px 16px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    font-size: 12px;
    color: var(--text-secondary, #666);
    z-index: 1000;
}

/* Loading state - fullscreen overlay with centered content (like .editor-empty) */
.editor-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary, #f5f5f5);
    z-index: 1000;
}

/* Loading card - the visible box with text and spinner */
.editor-loading-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 32px;
    background: var(--bg-primary, #fff);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    color: var(--text-secondary, #666);
}

.editor-loading-card::after {
    content: '';
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color, #ddd);
    border-top-color: var(--primary-color, #2196f3);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 12px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Empty state - centered in canvas wrapper regardless of parent align-items */
.editor-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    /* Fill available space to enable centering */
    width: 100%;
    min-height: calc(100vh - 180px); /* Account for toolbar + header */
    align-self: stretch; /* Override parent's align-items: flex-start */
    color: var(--text-secondary, #666);
    text-align: center;
    padding: 48px;
    box-sizing: border-box;
}

.editor-empty svg {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.editor-empty h3 {
    margin: 0 0 8px;
    font-weight: 500;
}

.editor-empty p {
    margin: 0;
    font-size: 14px;
}

.editor-empty .create-doc-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    padding: 12px 24px;
    background: var(--primary-color, #2196f3);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.editor-empty .create-doc-btn:hover {
    background: var(--primary-dark, #1976d2);
}

.editor-empty .create-doc-btn svg {
    width: 16px;
    height: 16px;
    margin: 0;
    opacity: 1;
}

/* Quill container (hidden, used for ephemeral editing) */
#quill-container {
    position: fixed;
    z-index: 1000;
    background: transparent;
}

#quill-container .ql-toolbar {
    display: none;
}

#quill-container .ql-container {
    border: none;
    font-family: inherit;
}

#quill-container .ql-editor {
    padding: 0;
    overflow: visible;
}

/* Quill Font Family Styles */
.ql-font-arial,
.ql-editor .ql-font-arial {
    font-family: Arial, Helvetica, sans-serif;
}

.ql-font-times-new-roman,
.ql-editor .ql-font-times-new-roman {
    font-family: 'Times New Roman', Times, serif;
}

.ql-font-courier-new,
.ql-editor .ql-font-courier-new {
    font-family: 'Courier New', Courier, monospace;
}

.ql-font-georgia,
.ql-editor .ql-font-georgia {
    font-family: Georgia, 'Times New Roman', serif;
}

.ql-font-verdana,
.ql-editor .ql-font-verdana {
    font-family: Verdana, Geneva, sans-serif;
}

.ql-font-trebuchet-ms,
.ql-editor .ql-font-trebuchet-ms {
    font-family: 'Trebuchet MS', Helvetica, sans-serif;
}

.ql-font-serif,
.ql-editor .ql-font-serif {
    font-family: Georgia, 'Times New Roman', serif;
}

.ql-font-sans-serif,
.ql-editor .ql-font-sans-serif {
    font-family: Arial, Helvetica, sans-serif;
}

.ql-font-monospace,
.ql-editor .ql-font-monospace {
    font-family: 'Courier New', Courier, monospace;
}

/* Responsive */
@media (max-width: 768px) {
    .editor-canvas-wrapper {
        padding: 12px;
    }

    .page-container {
        width: 100%;
        min-height: auto;
        aspect-ratio: 210 / 297;
    }
}

/* Print styles */
@media print {
    .document-toolbar,
    .editor-sidebar,
    .format-bar {
        display: none !important;
    }

    .editor-canvas-wrapper {
        padding: 0;
        overflow: visible;
    }

    .page-container {
        box-shadow: none;
        margin: 0;
    }

    .page-container::before {
        display: none;
    }
}

/* Toast Notifications */
.document-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    padding: 12px 24px;
    background: var(--bg-primary, #333);
    color: var(--text-primary, #fff);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    font-size: 14px;
    z-index: 1999;
    opacity: 0;
    transition:
        transform 0.3s ease,
        opacity 0.3s ease;
    pointer-events: none;
}

.document-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Success toast (default green accent) */
.document-toast-success {
    background: #2e7d32;
    color: #fff;
}

/* Error toast (red accent) */
.document-toast-error {
    background: #c62828;
    color: #fff;
}

[data-theme='dark'] .document-toast {
    background: #424242;
    color: #fff;
}

[data-theme='dark'] .document-toast-success {
    background: #388e3c;
}

[data-theme='dark'] .document-toast-error {
    background: #d32f2f;
}

/* ===== Rulers ===== */
/* Grid layout on editor-canvas for rulers + page */
.editor-canvas {
    display: grid;
    grid-template-columns: 20px auto;
    grid-template-rows: 20px auto;
    gap: 0;
    width: fit-content;
    margin: 0 auto;
    transform-origin: center top;
    transition: transform 0.1s ease;
}

/* Disable transition during Ctrl+wheel zoom to prevent "jump back" effect */
.editor-canvas.zooming {
    transition: none !important;
}

/* Horizontal mode: left-aligned, no auto-centering */
.editor-canvas.horizontal-mode {
    margin: 0;
    transform-origin: left top;
}

/* When in horizontal mode, wrapper should align to start (not center) */
/* overflow-y is controlled dynamically by NavigationManager based on page fit */
.editor-canvas-wrapper.horizontal-mode {
    justify-content: flex-start;
}

.editor-canvas.rulers-hidden {
    display: block;
}

.editor-canvas.rulers-hidden .ruler-corner,
.editor-canvas.rulers-hidden .ruler-horizontal,
.editor-canvas.rulers-hidden .ruler-vertical {
    display: none;
}

/* Multi-page mode: hide global rulers (per-page rulers with handles are used) */
.editor-canvas.multipage-mode {
    display: block;
}

.editor-canvas.multipage-mode > .ruler-corner,
.editor-canvas.multipage-mode > .ruler-horizontal,
.editor-canvas.multipage-mode > .ruler-vertical {
    display: none;
}

.ruler-corner {
    background: transparent;
    border-right: 1px solid var(--border-color, #ddd);
    border-bottom: 1px solid var(--border-color, #ddd);
    grid-column: 1;
    grid-row: 1;
}

.ruler {
    position: relative;
    background: transparent;
    overflow: visible;
}

.ruler-horizontal {
    grid-column: 2;
    grid-row: 1;
    border-bottom: 1px solid var(--border-color, #ddd);
    height: 20px;
}

.ruler-vertical {
    grid-column: 1;
    grid-row: 2;
    border-right: 1px solid var(--border-color, #ddd);
    width: 20px;
}

.ruler-canvas {
    display: block;
}

/* Page in grid cell */
.page-container {
    grid-column: 2;
    grid-row: 2;
}

/* Ruler active state (toggle button) */
#toggle-rulers-btn.active,
#toggle-grid-btn.active {
    background: var(--primary-light, #e3f2fd);
    color: var(--primary-color, #2196f3);
}

/* Dark theme: Toggle buttons active state */
[data-theme='dark'] #toggle-rulers-btn.active,
[data-theme='dark'] #toggle-grid-btn.active {
    background: rgba(99, 102, 241, 0.2);
    color: var(--brand-primary-light, #a5b4fc);
}

/* Dark theme rulers */
[data-theme='dark'] .ruler-corner,
[data-theme='dark'] .ruler {
    background: transparent;
    border-color: var(--border-color, #444);
}

/* Dark theme: Document content (paper) - always black text on white background */
[data-theme='dark'] .dom-layer {
    color: #333;
}

[data-theme='dark'] .page-container {
    background-color: white; /* Paper stays white, preserves background-image (grid) */
}

/* Dark theme: Ruler margin handles - use light color on dark background */
[data-theme='dark'] .ruler-horizontal .margin-handle::before,
[data-theme='dark'] .ruler-vertical .margin-handle::before {
    background: rgba(255, 255, 255, 0.5);
}

[data-theme='dark'] .ruler-horizontal .margin-handle:hover::before,
[data-theme='dark'] .ruler-horizontal .margin-handle.active::before,
[data-theme='dark'] .ruler-vertical .margin-handle:hover::before,
[data-theme='dark'] .ruler-vertical .margin-handle.active::before {
    background: var(--primary-light, #64b5f6);
}

/* Print: hide rulers */
@media print {
    .ruler-corner,
    .ruler-horizontal,
    .ruler-vertical {
        display: none !important;
    }

    .editor-canvas {
        display: block !important;
    }
}

/* ===== Content Indent Lines (Multiple) ===== */
/* Indent lines are dashed vertical lines inside print area for block alignment */
/* Lines are created dynamically via JS with inline --indent-position */

/* Container for dynamically created indent lines */
.indent-lines-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 6;
}

/* Container for dynamically created indent handles */
.indent-handles-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.indent-handles-container > * {
    pointer-events: auto;
}

.indent-line {
    position: absolute;
    width: calc(1px / var(--editor-zoom, 1));
    top: var(--margin-top, 75.59px);
    bottom: var(--margin-bottom, 75.59px);
    border-left: 1px dashed rgba(255, 152, 0, 0.5);
    pointer-events: none;
    z-index: 6;
    transition:
        border-color 0.15s,
        box-shadow 0.15s;
}

.indent-line.left {
    left: calc(var(--margin-left, 56.69px) + var(--indent-position, 0px));
}

.indent-line.right {
    right: calc(var(--margin-right, 56.69px) + var(--indent-position, 0px));
}

/* Highlighted state when handle is hovered/active */
.indent-line.active {
    border-left-color: var(--accent-orange, #ff9800);
    box-shadow: 0 0 4px rgba(255, 152, 0, 0.5);
}

/* ===== Indent Handles on Horizontal Ruler (Multiple) ===== */
/* Triangular handles pointing toward content area */
/* Handles are created dynamically via JS with inline --indent-position */
.indent-handle {
    position: absolute;
    z-index: 201;
    cursor: ew-resize;
    top: -18px;
    transition: opacity 0.15s;
}

/* Left indent handle: ▶ (triangle pointing right toward content) */
.ruler-horizontal .indent-handle.left {
    left: calc(var(--margin-left, 56.69px) + var(--indent-position, 0px));
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-left: 8px solid rgba(255, 152, 0, 0.6);
    transform: translateX(-2px);
}

.ruler-horizontal .indent-handle.left:hover,
.ruler-horizontal .indent-handle.left.active {
    border-left-color: var(--accent-orange, #ff9800);
}

/* Right indent handle: ◀ (triangle pointing left toward content) */
.ruler-horizontal .indent-handle.right {
    right: calc(var(--margin-right, 56.69px) + var(--indent-position, 0px));
    width: 0;
    height: 0;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
    border-right: 8px solid rgba(255, 152, 0, 0.6);
    transform: translateX(2px);
}

.ruler-horizontal .indent-handle.right:hover,
.ruler-horizontal .indent-handle.right.active {
    border-right-color: var(--accent-orange, #ff9800);
}

/* Dragging state for indent handles */
.indent-handle.dragging {
    opacity: 1 !important;
}

.indent-handle.left.dragging {
    border-left-color: var(--accent-orange, #ff9800) !important;
}

.indent-handle.right.dragging {
    border-right-color: var(--accent-orange, #ff9800) !important;
}

/* Indent handle number badge */
.indent-handle .indent-number {
    position: absolute;
    top: -8px;
    font-size: 8px;
    font-weight: 600;
    color: rgba(255, 152, 0, 0.8);
    pointer-events: none;
    user-select: none;
}

.indent-handle.left .indent-number {
    left: -12px;
}

.indent-handle.right .indent-number {
    right: -12px;
}

/* Add button (+) - appears on hover */
.indent-add-btn {
    position: absolute;
    top: -18px;
    width: 12px;
    height: 12px;
    background: rgba(255, 152, 0, 0.15);
    border: 1px solid rgba(255, 152, 0, 0.4);
    border-radius: 2px;
    color: rgba(255, 152, 0, 0.8);
    font-size: 10px;
    font-weight: bold;
    line-height: 10px;
    text-align: center;
    cursor: pointer;
    opacity: 0;
    transition:
        opacity 0.15s,
        background 0.15s;
    z-index: 202;
}

.indent-handle:hover + .indent-add-btn,
.indent-add-btn:hover {
    opacity: 1;
}

.indent-add-btn:hover {
    background: rgba(255, 152, 0, 0.3);
    border-color: var(--accent-orange, #ff9800);
}

.ruler-horizontal .indent-add-btn.left {
    /* Position after the left handle triangle (compensate for zoom) */
    left: calc(var(--margin-left, 56.69px) + var(--indent-position, 0px) + 10px / var(--editor-zoom, 1));
}

.ruler-horizontal .indent-add-btn.right {
    /* Position before the right handle triangle (compensate for zoom) */
    right: calc(var(--margin-right, 56.69px) + var(--indent-position, 0px) + 10px / var(--editor-zoom, 1));
}

/* Initial add button (visible by default, placed at margin edge) */
.indent-add-btn.initial {
    opacity: 0.5;
}

.indent-add-btn.initial:hover {
    opacity: 1;
}

/* ===== Per-Page Rulers (inside each page-container) ===== */
/* Rulers are positioned outside page boundaries but within container's coordinate system */

/* Hide rulers by default - show only on active page */
.page-container > .ruler-corner,
.page-container > .ruler {
    display: none;
}

.page-container.page-active > .ruler-corner,
.page-container.page-active > .ruler {
    display: block;
}

/* Ruler corner (top-left) */
.page-container > .ruler-corner {
    position: absolute;
    top: -20px;
    left: -20px;
    width: 20px;
    height: 20px;
    background: transparent;
    border-right: 1px solid var(--border-color, #ddd);
    border-bottom: 1px solid var(--border-color, #ddd);
    z-index: 10;
}

/* Horizontal ruler (top) */
.page-container > .ruler-horizontal {
    position: absolute;
    top: -20px;
    left: 0;
    width: 100%;
    height: 20px;
    background: transparent;
    border-bottom: 1px solid var(--border-color, #ddd);
    z-index: 10;
    overflow: visible;
}

/* Vertical ruler (left) */
.page-container > .ruler-vertical {
    position: absolute;
    left: -20px;
    top: 0;
    width: 20px;
    height: 100%;
    background: transparent;
    border-right: 1px solid var(--border-color, #ddd);
    z-index: 10;
    overflow: visible;
}

/* Canvas inside per-page rulers */
.page-container > .ruler .ruler-canvas {
    display: block;
}

/* Dark theme per-page rulers */
[data-theme='dark'] .page-container > .ruler-corner,
[data-theme='dark'] .page-container > .ruler {
    background: transparent;
    border-color: var(--border-color, #444);
}

/* Hide per-page rulers when rulers are globally disabled */
.editor-canvas.rulers-hidden .page-container > .ruler-corner,
.editor-canvas.rulers-hidden .page-container > .ruler {
    display: none !important;
}