/* Knowledge Builder Layout Styles */

.knowledge-builder-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--mud-palette-background);
}

.knowledge-builder-header {
    flex-shrink: 0;
    border-bottom: 1px solid var(--mud-palette-divider);
}

.knowledge-builder-content {
    flex-grow: 1;
    overflow: hidden;
}

/* Table of Contents Panel */
.knowledge-toc-panel {
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease;
}

.knowledge-toc-panel.collapsed {
    width: 60px !important;
}

/* TOC Item Styles */
.toc-item-content {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 4px 0;
}

.toc-item-text {
    flex-grow: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.toc-item-level-1 {
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.toc-item-level-1:hover {
    background-color: var(--mud-palette-action-default-hover);
}

.toc-item-level-2 {
    font-weight: 400;
    cursor: pointer;
    transition: background-color 0.2s ease;
    padding-left: 16px;
}

.toc-item-level-2:hover {
    background-color: var(--mud-palette-action-default-hover);
}

.toc-item-active {
    background-color: var(--mud-palette-primary-lighten) !important;
    color: var(--mud-palette-primary-text);
}

/* Canvas Scroll Container */
#knowledge-canvas-view {
    scroll-behavior: smooth;
}

/* Document View Mode - Clean A4 Document Style */
/* UPDATED: Match Document Page (Content/View.razor) padding and layout */
.document-view-canvas {
    /* A4 Paper Dimensions */
    width: 210mm; /* A4 width - match Document Page */
    min-height: 297mm; /* A4 height - match Document Page */
    max-width: 100%;
    margin: 0 auto;
    padding: 25mm 20mm; /* Standard document margins - match Document Page */
    background-color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); /* Match Document Page */
    min-height: calc(100vh - 200px);

    /* Enhanced Typography */
    line-height: 1.75;
    color: #1a1a1a;
    /* Softer than pure black */
    font-size: 16px;

    /* Smooth transitions */
    transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
}

/* View Mode - Clean Document (No Borders) */
.widget-canvas-item-readonly {
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
    padding: 0 !important;
    cursor: default !important;
    transition: opacity 0.2s ease;
}

/* Override MudBlazor default borders for all MudPaper in view mode */
.widget-canvas-item-readonly .mud-paper:not(.legacy-flat),
.widget-canvas-item-readonly.mud-paper:not(.legacy-flat) {
    border: none !important;
    border-width: 0 !important;
}

/* Focus States for Accessibility */
.widget-canvas-item-readonly:focus-visible {
    outline: 2px solid var(--mud-palette-primary);
    outline-offset: 4px;
    border-radius: 4px;
}

.widget-canvas-item-readonly:hover {
    background: transparent !important;
    box-shadow: none !important;
}

.widget-canvas-item-readonly .mud-paper-outlined {
    border: none !important;
}

/* Remove borders from Section widget in view mode - Override MudBlazor default */
.widget-canvas-item-readonly .knowledge-widget-section,
.widget-canvas-item-readonly .mud-paper.knowledge-widget-section {
    border: none !important;
    border-width: 0 !important;
    border-style: none !important;
    box-shadow: none !important;
}

/* Borderless Widgets (Text Content) - Remove ALL wrapper spacing */
.widget-wrapper-borderless {
    margin-bottom: 0 !important;
}

/* Text-based widgets in view mode - natural document flow */
.widget-wrapper-borderless .knowledge-widget-richtext,
.widget-wrapper-borderless .mud-stack {
    padding: 0 !important;
    margin-bottom: 0 !important;
}

/* Remove all MudPaper padding/borders in borderless widgets */
.widget-wrapper-borderless .mud-paper {
    padding: 0 !important;
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
}

/* View Mode Typography Spacing */
/* UPDATED: Reduced heading sizes for professional document appearance */
.widget-canvas-item-readonly h1,
.document-view-canvas h1 {
    margin-top: 2rem;          /* Reduced from 3rem */
    margin-bottom: 1.25rem;
    line-height: 1.2;
    font-weight: 700;
    font-size: 2rem;           /* Reduced from 3rem (48px → 32px) */
    /* Smaller for professional document context */
    letter-spacing: -0.02em;
    position: relative;
}

/* Section Divider for H1 (except first) */
.document-view-canvas h1:not(:first-child)::before {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, var(--mud-palette-primary), transparent);
    margin-bottom: 2rem;
    border-radius: 2px;
    opacity: 0.4;
}

.widget-canvas-item-readonly h2,
.document-view-canvas h2 {
    margin-top: 2rem;          /* Reduced from 2.5rem */
    margin-bottom: 1rem;
    line-height: 1.3;
    font-weight: 600;
    font-size: 1.5rem;         /* Reduced from 2rem (32px → 24px) */
    letter-spacing: -0.01em;
}

.widget-canvas-item-readonly h3,
.document-view-canvas h3 {
    margin-top: 1.5rem;        /* Reduced from 2rem */
    margin-bottom: 0.875rem;
    line-height: 1.4;
    font-weight: 600;
    font-size: 1.25rem;        /* Reduced from 1.5rem (24px → 20px) */
}

.widget-canvas-item-readonly h4,
.widget-canvas-item-readonly h5,
.widget-canvas-item-readonly h6,
.document-view-canvas h4,
.document-view-canvas h5,
.document-view-canvas h6 {
    margin-top: 1.5rem;
    margin-bottom: 0.625rem;
    line-height: 1.4;
    font-weight: 600;
}

/* Rich text content spacing */
/* Rich Text & Paragraph Styling */
/* UPDATED: Tighter spacing for more professional appearance */
.widget-canvas-item-readonly p,
.document-view-canvas p,
.knowledge-widget-richtext p {
    margin-bottom: 1rem;       /* Reduced from 1.25rem */
    line-height: 1.75;
    color: var(--mud-palette-text-primary);
}

/* Lists - Tighter Spacing */
.widget-canvas-item-readonly ul,
.widget-canvas-item-readonly ol,
.document-view-canvas ul,
.document-view-canvas ol {
    margin-bottom: 1.5rem;
    margin-top: 0.75rem;
    padding-left: 2rem;
}

.widget-canvas-item-readonly li,
.document-view-canvas li {
    margin-bottom: 0.375rem;   /* Reduced from 0.5rem */
    line-height: 1.75;
}

.widget-canvas-item-readonly li:last-child,
.document-view-canvas li:last-child {
    margin-bottom: 0;
}

.widget-canvas-item-readonly blockquote,
.document-view-canvas blockquote {
    margin: 2rem 0;
    padding: 1.25rem;          /* Reduced from 1.5rem */
    padding-left: 2rem;
    border-left: 4px solid var(--mud-palette-primary);
    font-style: italic;
    font-size: 1.1rem;
    color: var(--mud-palette-text-secondary);
    background: rgba(var(--mud-palette-primary-rgb), 0.03);
}

.widget-canvas-item-readonly hr,
.document-view-canvas hr {
    margin: 2rem 0;
    border: none;
    border-top: 1px solid var(--mud-palette-divider);
}

/* Structured widgets (keep borders/cards) - add spacing between them */
.widget-canvas-item-readonly .knowledge-widget-checklist,
.widget-canvas-item-readonly .knowledge-widget-step,
.widget-canvas-item-readonly .knowledge-widget-codeblock {
    margin-top: 2rem;
    margin-bottom: 2rem;
}

/* Callout Widget - Enhanced Styling */
/* UPDATED: Reduced border-left and padding for refined appearance */
.widget-canvas-item-readonly .knowledge-widget-callout,
.document-view-canvas .knowledge-widget-callout {
    margin: 2.5rem 0;
    padding: 1.25rem;          /* Reduced from 1.5rem */
    border-left: 3px solid var(--mud-palette-primary);  /* Reduced from 4px */
    background: rgba(var(--mud-palette-primary-rgb), 0.04);
    font-size: 1.05rem;
    border-radius: 0 4px 4px 0;
}

.knowledge-widget-callout[data-type="warning"] {
    border-left-color: var(--mud-palette-warning);
    background: rgba(var(--mud-palette-warning-rgb), 0.05);
}

.knowledge-widget-callout[data-type="error"] {
    border-left-color: var(--mud-palette-error);
    background: rgba(var(--mud-palette-error-rgb), 0.05);
}

.knowledge-widget-callout[data-type="success"] {
    border-left-color: var(--mud-palette-success);
    background: rgba(var(--mud-palette-success-rgb), 0.05);
}

/* ===================================================================
   FORM INPUT WIDGETS - Custom Label & Field Styling
   Enhanced professional appearance for all form field widgets
   =================================================================== */

/* Form Field Labels - Refined Typography */
.mud-input-label,
.mud-select .mud-input-label,
.mud-picker .mud-input-label {
    font-size: 0.875rem !important;      /* 14px - smaller than body for distinction */
    font-weight: 500 !important;          /* Medium weight for emphasis */
    color: #64748B !important;            /* Subtle gray (not pure black) */
    letter-spacing: 0.01em !important;    /* Slight spacing for elegance */
    margin-bottom: 4px !important;        /* Tighter spacing to input */
}

/* Required Asterisk Styling */
.mud-input-label .mud-input-required-indicator {
    color: #DC2626 !important;            /* Red for visibility */
    margin-left: 2px;
}

/* Helper Text (SubLabel) Styling */
.mud-input-helper-text {
    font-size: 0.75rem !important;        /* 12px */
    color: #94A3B8 !important;            /* Lighter gray */
    margin-top: 2px !important;
}

/* Form Input Fields - Consistent Spacing */
.knowledge-widget-input-wrapper {
    margin-bottom: 1.5rem;
}

/* Input Widget Container Spacing in View Mode */
.widget-canvas-item-readonly .mud-input,
.widget-canvas-item-readonly .mud-select,
.widget-canvas-item-readonly .mud-picker {
    margin-bottom: 1rem;
}

/* Table widget - clean professional look */
.widget-canvas-item-readonly .knowledge-widget-table {
    margin-top: 2rem;
    margin-bottom: 2rem;
}

/* Additional document refinements */
.document-view-canvas .mud-simple-table {
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid var(--mud-palette-table-lines);
    border-radius: 4px;
    overflow: hidden;
}

.document-view-canvas .mud-simple-table thead {
    background-color: var(--mud-palette-background-grey);
}

.document-view-canvas .mud-simple-table th {
    font-weight: 600;
    color: var(--mud-palette-text-primary);
    padding: 0.75rem 1rem;
}

.document-view-canvas .mud-simple-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--mud-palette-divider);
}

.document-view-canvas .mud-simple-table tr:last-child td {
    border-bottom: none;
}

/* Lists styling improvements */
.widget-canvas-item-readonly ul li,
.document-view-canvas ul li {
    list-style-type: disc;
}

.widget-canvas-item-readonly ol li,
.document-view-canvas ol li {
    list-style-type: decimal;
}

/* Text selection styling */
.document-view-canvas ::selection,
.widget-canvas-item-readonly ::selection {
    background-color: rgba(var(--mud-palette-primary-rgb), 0.2);
    color: var(--mud-palette-text-primary);
}

/* Link styling in document view */
.document-view-canvas a,
.widget-canvas-item-readonly a {
    color: var(--mud-palette-primary);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease;
}

.document-view-canvas a:hover,
.widget-canvas-item-readonly a:hover {
    border-bottom-color: var(--mud-palette-primary);
}

/* Code inline styling */
.document-view-canvas code:not([class*="language-"]),
.widget-canvas-item-readonly code:not([class*="language-"]) {
    background-color: #f6f8fa;
    padding: 3px 6px;
    border-radius: 3px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
    color: #e01e5a;
    border: 1px solid #e1e4e8;
}

/* Pre-formatted text blocks */
.document-view-canvas pre,
.widget-canvas-item-readonly pre {
    background-color: #f6f8fa;
    border: 1px solid #e1e4e8;
    border-radius: 6px;
    padding: 1rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Code Block Widget - Enhanced */
.knowledge-widget-codeblock {
    background: #f6f8fa;
    border-radius: 6px;
    padding: 1.25rem;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    overflow-x: auto;
    border: 1px solid #e1e4e8;
}

/* Strong and emphasis styling */
.document-view-canvas strong,
.widget-canvas-item-readonly strong {
    font-weight: 600;
    color: var(--mud-palette-text-primary);
}

.document-view-canvas em,
.widget-canvas-item-readonly em {
    font-style: italic;
}

/* Legacy class support */
.document-view-canvas .widget-container {
    border: none !important;
    padding: 0 !important;
    margin-bottom: 1.5rem;
    background: transparent !important;
}

.document-view-canvas .widget-container:hover {
    background: transparent !important;
}

/* Edit Mode - Widget Selection */
.widget-container.editable {
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    padding: 12px;
    border-radius: 4px;
    position: relative;
}

.widget-container.editable:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

.widget-container.selected {
    border: 2px solid var(--mud-palette-primary) !important;
    background-color: rgba(var(--mud-palette-primary-rgb), 0.05) !important;
    box-shadow: 0 0 0 3px rgba(var(--mud-palette-primary-rgb), 0.1);
}

/* Edit Mode Transitions */
.knowledge-builder-content>* {
    transition: width 0.3s ease, opacity 0.3s ease;
}

/* Responsive Breakpoints */
@media (max-width: 1400px) {
    .knowledge-toc-panel {
        width: 240px !important;
    }
}

@media (max-width: 1200px) {
    .knowledge-toc-panel {
        width: 200px !important;
    }

    .knowledge-builder-content .pa-3 {
        padding: 12px !important;
    }
}

@media (max-width: 960px) {

    /* Mobile: Stack vertically, hide TOC */
    .knowledge-toc-panel {
        display: none;
    }

    .knowledge-builder-content {
        flex-direction: column !important;
    }
}

/* Responsive: Scale down on smaller screens - Match Document Page */
@media (max-width: 768px) {
    .document-view-canvas {
        width: 100%;
        min-height: auto;
        padding: 16px; /* Match Document Page responsive padding */
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .toc-item-active {
        background-color: var(--mud-palette-primary-darken) !important;
    }

    /* Dark Mode - Document Canvas */
    .document-view-canvas {
        background-color: #1e1e1e;
        color: #e0e0e0;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2); /* Match Document Page */
    }

    /* Dark Mode - Code Blocks */
    .document-view-canvas code:not([class*="language-"]),
    .widget-canvas-item-readonly code:not([class*="language-"]) {
        background-color: #2d2d2d;
        color: #ff6b6b;
        border: 1px solid #3d3d3d;
    }

    .document-view-canvas pre,
    .widget-canvas-item-readonly pre {
        background-color: #2d2d2d;
        border: 1px solid #3d3d3d;
    }

    .knowledge-widget-codeblock {
        background: #2d2d2d;
        border: 1px solid #3d3d3d;
    }

    /* Dark Mode - Blockquotes */
    .document-view-canvas blockquote,
    .widget-canvas-item-readonly blockquote {
        background: rgba(255, 255, 255, 0.03);
        border-left-color: var(--mud-palette-primary);
    }

    /* Dark Mode - Callouts */
    .knowledge-widget-callout {
        background: rgba(255, 255, 255, 0.04);
    }

    /* Dark Mode - Tables */
    .document-view-canvas .mud-simple-table {
        border: 1px solid #3d3d3d;
    }

    .document-view-canvas .mud-simple-table thead {
        background-color: #2d2d2d;
    }

    .document-view-canvas .mud-simple-table td {
        border-bottom: 1px solid #3d3d3d;
    }
}

/* Print Stylesheet - Optimized for Paper Output */
@media print {

    /* Hide UI Chrome */
    .knowledge-builder-header,
    .knowledge-toc-panel,
    .knowledge-builder-toolbar,
    .mud-appbar,
    .mud-drawer,
    nav,
    footer,
    button,
    .mud-button,
    .mud-fab {
        display: none !important;
    }

    /* Optimize Document Canvas for Print */
    .document-view-canvas {
        max-width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
        box-shadow: none !important;
        background: white !important;
        color: black !important;
        page-break-after: auto;
    }

    /* Remove Interactive Effects */
    .widget-container.editable:hover,
    .widget-container.selected {
        background: transparent !important;
        border: none !important;
        box-shadow: none !important;
    }

    /* Prevent Page Breaks Inside Elements */
    .knowledge-widget-header,
    .knowledge-widget-richtext,
    .knowledge-widget-callout,
    .knowledge-widget-codeblock,
    .knowledge-widget-table,
    blockquote,
    pre {
        page-break-inside: avoid;
    }

    /* Typography Adjustments for Print */
    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    h1 {
        font-size: 24pt;
    }

    h2 {
        font-size: 18pt;
    }

    h3 {
        font-size: 14pt;
    }

    h4 {
        font-size: 12pt;
    }

    /* Links */
    a {
        text-decoration: underline;
        color: black;
    }

    a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        font-style: italic;
    }

    /* Code Blocks */
    .knowledge-widget-codeblock,
    pre {
        background: #f9f9f9 !important;
        border: 1px solid #ddd !important;
        white-space: pre-wrap;
    }

    /* Tables */
    .mud-simple-table {
        border-collapse: collapse;
    }

    .mud-simple-table th,
    .mud-simple-table td {
        border: 1px solid #000;
        padding: 6pt;
    }

    .mud-simple-table thead {
        background: #f0f0f0 !important;
    }

    /* Page Margins */
    @page {
        margin: 2cm 1.5cm;
        size: A4;
    }
}

/* Header Widget Anchor Styles */
h1[id^="heading-"],
h2[id^="heading-"] {
    scroll-margin-top: 80px;
    /* Account for fixed header */
    position: relative;
}

h1[id^="heading-"]::before,
h2[id^="heading-"]::before {
    content: "";
    display: block;
    height: 80px;
    margin-top: -80px;
    visibility: hidden;
}

/* Widget Canvas Styles */
.knowledge-widget-header {
    transition: box-shadow 0.2s ease;
}

.knowledge-widget-header:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Edit Mode Indicator */
.mud-chip.editing-indicator {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}