/* SWYFT Robotics - Official Design System */

/* CSS Variables - Light Theme (Matching SWYFT Robotics Website) */
:root {
    /* Typography - Arabic-inspired fonts */
    --font-stack: 'Cairo', 'Noto Sans Arabic', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-stack--monospace: 'JetBrains Mono', 'Fira Code', 'SFMono-Regular', Menlo, Consolas, Monaco, 'Liberation Mono', 'Lucida Console', monospace;
    --font-stack--headings: 'Cairo', 'Noto Sans Arabic', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Font Sizes - Increased by 1-2px */
    --font-size--normal: 14px;
    --font-size--small: 12px;
    --font-size--small--2: 11px;
    --font-size--small--3: 10px;
    --font-size--small--4: 8.5px;
    
    /* Body typography */
    --body-font-size: 14px;
    --body-line-height: 22px;
    --body-letter-spacing: 0.02em;
    
    --sidebar-caption-font-size: var(--font-size--small--2);
    --sidebar-item-font-size: var(--font-size--small);
    --code-font-size: var(--font-size--small);
    --header-height: 4rem;
    --sidebar-item-line-height: 1.2rem;
    --sidebar-item-spacing-vertical: 0.75rem;
    --sidebar-item-spacing-horizontal: 1.25rem;
    --sidebar-item-height: calc(var(--sidebar-item-line-height) + var(--sidebar-item-spacing-vertical) * 2);
    
    /* Palestinian Flag Color Palette */
    --color-foreground-primary: #000000; /* Black - Palestinian flag */
    --color-foreground-secondary: #333333; /* Dark grey */
    --color-foreground-muted: #666666;    /* Medium grey */
    --color-foreground-border: #007A3D;   /* Green border - Palestinian flag */
    --color-background-primary: #FFFFFF;  /* White - Palestinian flag */
    --color-background-secondary: #F5F5F5; /* Light grey */
    --color-background-hover: #E8F5E9;   /* Light green hover */
    --color-background-border: #007A3D;  /* Green border - Palestinian flag */
    --color-brand-primary: #000000;      /* Black - Palestinian flag */
    --color-brand-primary-rgb: 0, 0, 0; /* RGB values for #000000 */
    --color-brand-content: #CE1126;      /* Red - Palestinian flag link color */
    --color-accent: #CE1126;             /* Red - Palestinian flag */
    --color-success: #007A3D;            /* Green - Palestinian flag */
    --color-warning: #FFA500;            /* Orange warning */
    --color-error: #CE1126;              /* Red - Palestinian flag */
    --color-black: #000000;              /* Black - Palestinian flag */
    
    /* Button Colors - Palestinian Flag Style */
    --btn-1-color: #FFFFFF;
    --btn-1-bg: #000000;
    --btn-1-border: #000000;
    --btn-1-color-hover: #FFFFFF;
    --btn-1-bg-hover: #CE1126;
    --btn-1-border-hover: #CE1126;
    
    --color-sidebar-background: var(--color-background-primary);
    --color-sidebar-background-border: var(--color-background-border);
    --color-sidebar-brand-text: var(--color-foreground-primary);
    --color-sidebar-caption-text: var(--color-foreground-muted);
    --color-sidebar-link-text: var(--color-foreground-secondary);
    --color-sidebar-link-text--top-level: var(--color-brand-primary);
    --color-sidebar-item-background--hover: var(--color-background-hover);
    
    --color-header-background: var(--color-background-primary);
    --color-header-border: var(--color-background-border);
    --color-header-text: var(--color-foreground-primary);
    
    --color-code-background: #FFFFFF;
    --color-code-foreground: #000000;
    --color-inline-code-background: #E8F5E9;
    
    --color-link: #CE1126; /* Red - Palestinian flag link color */
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
  }
  
  /* Light Theme */
  @media (prefers-color-scheme: dark) {
    html:not([data-theme="dark"])[data-theme="light"],
      html:not([data-theme="dark"]):not([data-theme]) {
      /* Palestinian Flag Color Theme */
    --color-background-primary: #FFFFFF; /* White - Palestinian flag */
    --color-background-secondary: #F5F5F5; /* Light grey */
    --color-background-hover: #E8F5E9;   /* Light green hover */
    --color-background-border: #007A3D;  /* Green - Palestinian flag */
    --color-foreground-primary: #000000; /* Black - Palestinian flag */
    --color-foreground-secondary: #333333; /* Dark grey */
    --color-foreground-muted: #666666;    /* Medium grey */
    --color-foreground-border: #007A3D;   /* Green - Palestinian flag */
    --color-brand-primary: #000000;      /* Black - Palestinian flag */
    --color-brand-primary-rgb: 0, 0, 0; /* RGB values for #000000 */
    --color-brand-content: #CE1126;      /* Red - Palestinian flag link color */
    --color-code-background: #FFFFFF; /* White code background */
    --color-code-foreground: #000000; /* Black code text */
  
      
      /* Update derived sidebar colors for dark theme */
      --color-sidebar-background: var(--color-background-secondary);
      --color-sidebar-background-border: var(--color-background-border);
      --color-sidebar-brand-text: var(--color-foreground-primary);
      --color-sidebar-caption-text: var(--color-foreground-muted);
      --color-sidebar-link-text: var(--color-foreground-secondary);
      --color-sidebar-link-text--top-level: var(--color-brand-primary);
      --color-sidebar-item-background--hover: linear-gradient(90deg, var(--color-background-hover) 0%, var(--color-background-hover) var(--sidebar-item-spacing-horizontal), var(--color-background-hover) 100%);
      
      /* Update header colors for dark theme */
      --color-header-background: var(--color-background-primary);
      --color-header-border: var(--color-background-border);
      --color-header-text: var(--color-foreground-primary);
      
      /* Update other derived colors */
      --color-inline-code-background: var(--color-background-secondary);
      --color-link: var(--color-brand-content);
      }
  }
  
  /* Dark Theme - Palestinian Flag Colors */
  html[data-theme="dark"] {
    --color-foreground-primary: #FFFFFF;
    --color-foreground-secondary: #CCCCCC;
    --color-foreground-muted: #999999;
    --color-foreground-border: #007A3D;
    --color-background-primary: #000000;
    --color-background-secondary: #1a1a1a;
    --color-background-hover: #1a3d1a;
    --color-background-border: #007A3D;
    --color-brand-primary: #CE1126;
    --color-brand-primary-rgb: 206, 17, 38; /* RGB values for #CE1126 */
    --color-brand-content: #CE1126;
    --color-accent: #CE1126;
    --color-success: #007A3D;
    --color-warning: #FFA500;
    --color-error: #CE1126;
    --color-code-background: #000000;
    --color-code-foreground: #FFFFFF;
    
    /* Update derived sidebar colors for dark theme */
    --color-sidebar-background: var(--color-background-secondary);
    --color-sidebar-background-border: var(--color-background-border);
    --color-sidebar-brand-text: var(--color-foreground-primary);
    --color-sidebar-caption-text: var(--color-foreground-muted);
    --color-sidebar-link-text: var(--color-foreground-secondary);
    --color-sidebar-link-text--top-level: var(--color-brand-primary);
    --color-sidebar-item-background--hover: linear-gradient(90deg, var(--color-background-hover) 0%, var(--color-background-hover) var(--sidebar-item-spacing-horizontal), var(--color-background-hover) 100%);
    
    /* Update header colors for dark theme */
    --color-header-background: var(--color-background-primary);
    --color-header-border: var(--color-background-border);
    --color-header-text: var(--color-foreground-primary);
    
    /* Update other derived colors */
    --color-inline-code-background: var(--color-background-secondary);
    --color-link: var(--color-brand-content);
  }
  
  /* Dark theme header styling */
  html[data-theme="dark"] .mobile-header {
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-background-border);
  }
  
  /* Reset */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  /* Ensure viewport always shows correct background */
  html {
    background: var(--color-background-primary) !important;
    min-height: 100%;
  }
  
  /* Specific container background enforcement */
  .page, .main, .content, .article-container, .tab-content, .content-section {
    background: var(--color-background-primary) !important;
  }
  
  /* Base styles */
  html, body {
    height: 100%;
    background: var(--color-background-primary) !important;
    color: var(--color-foreground-primary);
  }
  
body {
    font-family: var(--font-stack);
    font-size: var(--body-font-size);
    line-height: var(--body-line-height);
    letter-spacing: var(--body-letter-spacing);
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: var(--color-background-primary) !important;
    overflow-x: hidden; /* Prevent horizontal overflow */
    max-width: 100vw; /* Ensure body doesn't exceed viewport width */
}
  
  /* Major containers already handled by consolidated rule above */
  
  /* Table styles */
  .table-container {
    margin: 1.5rem 0;
    overflow-x: auto;
    border-radius: 0; /* SWYFT: no border radius */
    box-shadow: none; /* SWYFT: no shadows */
    border: 1px solid var(--color-background-border);
  }
  
  .content-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--color-background-primary);
    font-size: var(--font-size--small);
    line-height: 1.5;
  }
  
  .content-table thead {
    background-color: var(--color-background-secondary);
    border-bottom: 2px solid var(--color-background-border);
  }
  
  .content-table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--color-foreground-primary);
    border-bottom: 1px solid var(--color-background-border);
    white-space: nowrap;
  }
  
  .content-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-background-border);
    color: var(--color-foreground-secondary);
    vertical-align: top;
  }
  
  .content-table tbody tr:hover {
    background-color: var(--color-background-hover); /* SWYFT hover color */
  }
  
  .content-table tbody tr:last-child td {
    border-bottom: none;
  }
  
  .content-table code {
    background-color: var(--color-inline-code-background);
    padding: 0.125rem 0.25rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-stack--monospace);
    font-size: var(--font-size--small--2);
  }
  
  .content-table pre {
    margin: 0;
    padding: 0.5rem;
    background-color: var(--color-code-background);
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-size: var(--font-size--small--2);
  }
  
  .content-table pre code {
    background: none;
    padding: 0;
    border-radius: 0;
  }
  
  /* Responsive table */
  @media (max-width: 67em) {
    .table-container {
      margin: 1rem 0;
    }
    
    .content-table {
      font-size: var(--font-size--small--2);
    }
    
    .content-table th,
    .content-table td {
      padding: 0.5rem 0.75rem;
    }
  }
  
  @media (max-width: 48em) {
    .content-table th,
    .content-table td {
      padding: 0.375rem 0.5rem;
    }
    
    .content-table pre {
      padding: 0.375rem;
      font-size: var(--font-size--small--3);
    }
  }
  
  /* Utility classes */
  .visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
  }
  
  /* Page layout */
  .page {
    display: flex;
    min-height: 100%;
    overflow-x: hidden; /* Prevent horizontal overflow at page level */
    max-width: 100vw; /* Ensure page doesn't exceed viewport width */
  }
  
  /* Mobile header */
  /* .mobile-header {
    background-color: var(--color-header-background);
    border-bottom: 1px solid var(--color-header-border);
    color: var(--color-header-text);
    display: flex;
    height: var(--header-height);
    width: 100%;
    z-index: 100;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    transform: translateY(-100%);
    transition: transform 0.3s ease-in-out;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.95);
  } */
  .mobile-header {
    background-color: var(--color-background-primary); /* SWYFT: solid background */
    backdrop-filter: none; /* SWYFT: no blur effects */
    border-bottom: 1px solid var(--color-background-border);
    color: var(--color-header-text);
    display: flex;
    height: var(--header-height);
    width: 100%;
    z-index: 1000;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    box-shadow: none; /* SWYFT: no shadows */
    transition: transform 0.3s ease; /* SWYFT anchor-transition */
    transform: translateY(0); /* Default: visible */
  }
  
  .mobile-header:not(.visible) {
    transform: translateY(-100%);  /* Hide when scrolling down */
  }
  
  .mobile-header.visible {
    transform: translateY(0);  /* Show when scrolling up */
  }
  
  
  
  .mobile-header .header-left,
  .mobile-header .header-right {
    display: flex;
    height: var(--header-height);
    padding: 0 1rem;
    align-items: center;
  }
  
  .mobile-header .brand {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-header-text);
  }
  
  .mobile-header .icon {
    font-size: 1.5em; /* Adjust icon size */
  }
  
  /* Header Navigation */
  .header-navigation {
    display: flex;
    gap: 1rem;
    margin-left: 1rem;
  }
  
  .header-nav-link {
    color: var(--color-foreground-primary);
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: 0; /* SWYFT uses no border radius */
    font-size: 16px; /* SWYFT menu-lv1-size */
    font-weight: 700; /* SWYFT menu-lv1-weight */
    letter-spacing: 0.05em; /* SWYFT menu-lv1-letter-spacing */
    text-transform: uppercase; /* SWYFT menu-lv1-text-transform */
    line-height: 22px; /* SWYFT menu-lv1-line-height */
    transition: all ease 0.3s; /* SWYFT anchor-transition */
    position: relative;
  }
  
  .header-nav-link:hover {
    color: var(--color-foreground-primary);
    text-decoration: underline; /* SWYFT style hover */
  }
  
  .header-nav-link.active {
    color: var(--color-foreground-primary);
    font-weight: 700;
    text-decoration: underline;
  }
  
  /* Header Search Styles */
  .search-container-header {
    display: flex;
    align-items: center;
    margin-right: 1rem;
    position: relative;
  }
  
  .search-input-header {
    width: 240px;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-background-border); /* SWYFT: simple border */
    border-radius: 0; /* SWYFT: no border radius */
    background-color: var(--color-background-primary);
    color: var(--color-foreground-primary);
    font-size: 14px; /* Increased font size */
    letter-spacing: 0.02em; /* SWYFT body letter spacing */
    transition: all ease 0.3s; /* SWYFT anchor-transition */
    box-sizing: border-box;
    box-shadow: none; /* SWYFT: no shadows */
    font-family: var(--font-stack);
  }
  
  .search-input-header:focus {
    outline: none;
    border-color: var(--color-foreground-primary);
    background-color: var(--color-background-primary);
    /* SWYFT: no transforms or size changes */
  }
  
  .search-input-header::placeholder {
    color: var(--color-foreground-secondary);
  }
  
  /* Search Results Dropdown */
  .search-results {
    position: absolute;
    top: 100%;
    right: 0;
    width: 100%;
    max-width: min(400px, calc(100vw - 2rem)); /* Prevent overflow */
    max-height: 500px;
    background-color: var(--color-background-primary);
    border: 1px solid var(--color-background-border);
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    overflow-y: auto;
    overflow-x: hidden;
    margin-top: 0.5rem;
    box-sizing: border-box;
  }
  
  .search-results-list {
    padding: 0.5rem;
  }
  
  .search-result-item {
    border-bottom: 1px solid var(--color-background-border);
    padding: 0.75rem 0;
  }
  
  .search-result-item:last-child {
    border-bottom: none;
  }
  
  .search-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
  }
  
  .search-result-title {
    font-weight: 600;
    color: var(--color-foreground-primary);
    font-size: 0.9rem;
  }
  
  .search-result-section {
    font-size: 0.75rem;
    color: var(--color-foreground-secondary);
    background-color: var(--color-background-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
  }
  
  .search-result-matches {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
  }
  
  .search-result-match {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
  }
  
  .search-result-match:hover {
    background-color: var(--color-background-hover); /* SWYFT hover color */
  }
  
  .match-type {
    font-size: 0.75rem;
    color: var(--color-brand-primary);
    font-weight: 600;
    text-transform: uppercase;
    min-width: 60px;
  }
  
  .match-text {
    font-size: 0.85rem;
    color: var(--color-foreground-primary);
    line-height: 1.4;
    flex: 1;
  }
  
  .match-text mark {
    background-color: var(--color-brand-primary);
    color: var(--color-background-primary);
    padding: 0.1rem 0.2rem;
    border-radius: 0.2rem;
  }
  
  /* Link Grid Styles */
  .link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
  }
  
  .link-grid-button {
    background-color: var(--color-background-primary);
    border: 1px solid var(--color-background-border); /* SWYFT: simpler border */
    border-radius: 0; /* SWYFT: no border radius */
    color: var(--color-foreground-primary);
    cursor: pointer;
    font-size: 14px; /* SWYFT menu font size */
    font-weight: 400; /* SWYFT body weight */
    letter-spacing: 0.02em; /* SWYFT body letter spacing */
    padding: 1.5rem;
    text-align: center;
    transition: all ease 0.3s; /* SWYFT anchor-transition */
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: none; /* SWYFT: no shadows */
    position: relative;
    overflow: hidden;
  }
  
  /* Remove fancy gradient animation */
  .link-grid-button::before {
    display: none;
  }
  
  .link-grid-button:hover {
    background-color: var(--color-background-hover);
    border-color: var(--color-background-border);
    color: var(--color-foreground-primary);
    /* SWYFT: no transforms, just background change */
  }
  
  
  .nav-overlay-icon {
    cursor: pointer;
    /* display: none; */
    align-items: center;
    justify-content: center;
  }
  
  .nav-overlay-icon .icon {
    color: var(--color-foreground-secondary);
    height: 1.5rem;
    width: 1.5rem;
    font-size: 1.2rem;
  }
  
  /* Theme toggle */
  .theme-toggle-container {
    display: flex;
  }
  
  .theme-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    padding: 0;
    align-items: center;
    justify-content: center;
  }
  
  .theme-icon {
    font-size: 1.25rem;
    color: var(--color-foreground-primary);
  }
  
  .theme-icon {
    font-size: 1.25rem;
    color: var(--color-foreground-primary);
  }
  
  /* Sidebar */
  .sidebar-drawer {
    position: fixed;
    top: 0;
    left: calc(-1 * var(--sidebar-width, 15em));
    width: var(--sidebar-width, 15em);
    height: 100vh;
    background-color: var(--color-sidebar-background);
    transition: none; /* No animation - instant */
    z-index: 2;
    overflow: hidden;
    box-shadow: none; /* SWYFT: no shadows */
    backdrop-filter: none; /* SWYFT: no blur effects */
    border-right: 1px solid var(--color-background-border);
    min-width: 15em; /* Ensure minimum width */
    max-width: 600px; /* Maximum width for very wide content */
  }
  
  /* Completely hide sidebar when checkbox is disabled (homepage) */
  #__navigation:disabled ~ .page .sidebar-drawer {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
  }
  
  /* Hide sidebar toggle when checkbox is disabled (homepage) */
  #__navigation:disabled ~ .page .nav-overlay-icon {
    display: none !important;
  }
  
  /* Sidebar resize handle */
  .sidebar-resize-handle {
    position: absolute;
    top: 0;
    right: -4px;
    width: 8px;
    height: 100%;
    cursor: col-resize;
    background: transparent;
    z-index: 10;
    transition: background-color 0.2s ease;
  }
  
  .sidebar-resize-handle:hover,
  .sidebar-resize-handle.resizing {
    background-color: var(--color-brand-primary);
    opacity: 0.3;
  }
  
  .sidebar-resize-handle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 2px;
    height: 40px;
    background-color: var(--color-foreground-border);
    border-radius: 1px;
    opacity: 0;
    transition: opacity 0.2s ease;
  }
  
  .sidebar-resize-handle:hover::before,
  .sidebar-resize-handle.resizing::before {
    opacity: 1;
  }
  
  /* Hide resize handle on mobile */
  /* @media (max-width: 63em) {
    .sidebar-resize-handle {
      display: none;
    }
  } */
  
  /* Dark theme adjustments for resize handle */
  [data-theme="dark"] .sidebar-resize-handle::before {
    background-color: var(--color-foreground-border);
  }
  
  [data-theme="dark"] .sidebar-resize-handle:hover,
  [data-theme="dark"] .sidebar-resize-handle.resizing {
    background-color: var(--color-brand-primary);
    opacity: 0.4;
  }
    /* Sidebar Content */
  .sidebar-drawer .sidebar-container {
    padding-top: 0px;
    width: 100%; /* Take full width of parent */
  }
  
  .sidebar-container {
    box-sizing: border-box;
    width: 15em;
    min-width: 15em;
  }
  
  .sidebar-sticky {
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: sticky;
    top: 0;
  }
  
  /* Sidebar scroll area fills remaining height and always scrolls if needed */
  .sidebar-scroll {
      overflow-y: auto;
      overflow-x: hidden;
      height: calc(100vh - var(--header-height) - 4rem);
      padding-bottom: 4rem;
      padding-top: 1rem;
  }
  
  .sidebar-tree {
    display: flex;
    flex-direction: column;
  }
  
  .parent-folder {
    display: block;
  }
  
  .children-nav {
    display: none;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  
  .children-nav.expanded {
    display: block;
  }
  
  .sidebar-brand {
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    padding: var(--sidebar-item-spacing-vertical) var(--sidebar-item-spacing-horizontal);
    text-decoration: none;
  }
  
  .git-logo {
    width: 24px;
    height: 24px;
    margin-right: 8px;
  }
  
  [data-theme="light"] #git-logo {
    filter: invert(100%)
  }
  
  [data-theme="dark"] #git-logo {
    filter: invert(0%)
  }
  
  .sidebar-brand-text {
    color: var(--color-sidebar-brand-text);
    font-size: 1.5rem;
    font-weight: 700;
    overflow-wrap: break-word;
    margin: var(--sidebar-item-spacing-vertical) 0;
  }
  
  .sidebar-tree {
    font-size: var(--sidebar-item-font-size);
    margin-bottom: var(--sidebar-item-spacing-vertical);
    margin-top: 1.5rem;
    padding-bottom: 2rem; /* Add padding to ensure last items are visible */
  }
  
  /* Mobile sidebar navigation - hidden by default */
  .mobile-sidebar-nav {
    display: none;
  }
  
  .sidebar-tree ul {
    display: flex;
    flex-direction: column;
    list-style: none;
    margin-bottom: 0;
    margin-top: 0;
    padding: 0;
  }
  
  .sidebar-tree li {
    margin: 0;
    position: relative;
  }
  
  .sidebar-tree .caption,
  .sidebar-tree :not(.caption) > .caption-text {
    color: var(--color-sidebar-caption-text);
    font-size: var(--sidebar-caption-font-size);
    font-weight: 700;
    margin: 1rem 0 0 0;
    padding: var(--sidebar-item-spacing-vertical) var(--sidebar-item-spacing-horizontal);
    text-transform: uppercase;
  }
  
  
  
  /* Enhanced navigation item spacing for dynamic width */
  .sidebar-tree .reference {
    color: var(--color-sidebar-link-text);
    box-sizing: border-box;
    display: inline-block;
    height: 100%;
    line-height: var(--sidebar-item-line-height);
    overflow-wrap: anywhere;
    padding: var(--sidebar-item-spacing-vertical) var(--sidebar-item-spacing-horizontal);
    text-decoration: none;
    width: 100%;
    border-radius: 0; /* SWYFT: no border radius */
    margin: 0.125rem 0.5rem;
    transition: all ease 0.3s; /* SWYFT anchor-transition */
    position: relative;
    white-space: nowrap; /* Prevent text wrapping */
    overflow: hidden;
    text-overflow: ellipsis; /* Show ellipsis for very long text */
  }
  
  .sidebar-tree .reference:hover {
    background: var(--color-sidebar-item-background--hover);
    color: var(--color-sidebar-link-text);
    /* SWYFT: no transforms or shadows, just background change */
  }
  
  /* Better spacing for nested navigation */
  .children-nav {
    display: none;
    list-style: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    transition: all 0.3s ease;
  }
  
  .children-nav.expanded {
    display: block;
    animation: expandDown 0.3s ease-out;
  }
  
  .children-nav.collapsed {
    display: none;
    animation: collapseUp 0.3s ease-in;
  }
  
  /* Ensure child items have proper spacing */
  .child-tab {
    margin: 0;
    padding: 0;
  }
  
  .child-reference {
    padding-left: 2rem !important; /* Indent child items */
    font-size: 0.9em;
    color: var(--color-sidebar-link-text);
    transition: all ease 0.3s; /* SWYFT anchor-transition */
    border-radius: 0; /* SWYFT: no border radius */
  }
  
  /* Parent items with better visual hierarchy */
  .parent-reference {
    font-weight: 700; /* SWYFT menu weight */
    color: var(--color-sidebar-link-text--top-level);
    padding: var(--sidebar-item-spacing-vertical) var(--sidebar-item-spacing-horizontal);
    transition: all ease 0.3s; /* SWYFT anchor-transition */
    border-radius: 0; /* SWYFT: no border radius */
  }
  
  /* Expand icon positioning */
  .expand-icon {
    display: inline-block;
    margin-right: 0.5rem;
    transition: transform 0.2s ease;
    font-size: 0.75em;
    width: 1.2em;
    text-align: center;
    font-family: Arial, sans-serif;
    line-height: 1;
    font-weight: bold;
  }
  
  .sidebar-tree .toctree-l1 > .reference {
    color: var(--color-sidebar-link-text--top-level);
    font-weight: 600;
  }
  
  .sidebar-tree .current-page > .reference {
    font-weight: 700;
    background: var(--color-brand-primary);
    color: var(--color-background-primary);
    box-shadow: var(--shadow-sm);
  }
  
  /* Main content */
  .main {
    flex: 1; /* Take remaining space if using flexbox for layout */
    margin-left: 0; /* Start with full-width content */
    transition: margin-left 0.3s ease, max-width 0.3s ease; /* Smooth transition for content */
    padding-top: calc(var(--header-height)); /* Adjust 1rem as needed for spacing */
    overflow-x: hidden; /* Prevent horizontal overflow */
    max-width: 100%;
  }
  
  /* .content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 0 3em;
    width: 46em;
  } */
  .content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 100%; /* Allow content to take full width */
    max-width: 90%; /* Increase maximum width for better content display */
    margin: 0 auto; /* Center the content horizontally */
    overflow-x: hidden; /* Prevent horizontal overflow */
  }
  
  
  .article-container {
    color: var(--color-foreground-primary);
    overflow-wrap: break-word;
    overflow-x: hidden;
    max-width: 100%;
  }
  
  /* Additional section background */
  section {
    background: var(--color-background-primary);
  }
  
  /* Tab content */
  .tab-content {
    display: none;
  }
  
  .tab-content.active {
    display: block;
  }
  
  /* Typography */
  article {
    line-height: 1.5;
  }
  
h1, h2, h3, h4, h5, h6 {
    border-radius: 0.5rem;
    font-family: var(--font-stack--headings);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: 0.05em; /* SWYFT heading letter spacing */
    text-transform: uppercase; /* SWYFT headings are uppercase */
    margin: 0.5rem -0.5rem;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}
  
  h1 {
    font-size: 2.5em;
    margin-bottom: 1rem;
    margin-top: 1.75rem;
  }
  
  h2 {
    font-size: 2em;
    margin-top: 1.75rem;
  }
  
  h3 {
    font-size: 1.5em;
  }
  
  h4 {
    font-size: 1.25em;
  }
  
  h5 {
    font-size: 1.125em;
  }
  
  h6 {
    font-size: 1em;
  }
  
  h1 + p, h2 + p, h3 + p, h4 + p, h5 + p, h6 + p {
    margin-top: 0;
  }
  
  p {
    margin-bottom: 0.75rem;
    margin-top: 0.5rem;
    color: var(--color-foreground-primary);
  }
  
  /* Content section styling */
  .content-section {
    color: var(--color-foreground-primary);
  }
  
  /* Major layout elements background inheritance */
  article, main, aside {
    background-color: inherit;
  }
  
  .content-section h3,
  .content-section h4 {
    color: var(--color-foreground-primary);
  }
  
  .content-section p {
    color: var(--color-foreground-primary);
  }
  
  .content-section li {
    color: var(--color-foreground-primary);
  }
  
  .content-section strong {
    color: var(--color-foreground-primary);
    font-weight: 600;
  }
  
/* Links - always underlined */
a {
    color: var(--color-link);
    text-decoration: underline;
    transition: all ease 0.3s;
}

a:hover {
    color: var(--color-link);
    text-decoration: underline;
}
  
  .headerlink {
    font-weight: 100;
    user-select: none;
    margin-left: 0.5rem;
    visibility: hidden;
    text-decoration: none;
  }
  
  h1:hover > .headerlink,
  h2:hover > .headerlink,
  h3:hover > .headerlink,
  h4:hover > .headerlink,
  h5:hover > .headerlink,
  h6:hover > .headerlink {
    visibility: visible;
  }
  
  /* Code blocks */
  code, kbd, pre, samp {
    font-family: var(--font-stack--monospace);
  }
  
  code {
    background: var(--color-inline-code-background);
    border-radius: 0; /* SWYFT: no border radius */
    font-size: var(--font-size--small);
    padding: 0.1em 0.2em;
  }
  
  .code-block {
    background: var(--color-code-background);
    border: 2px solid var(--color-background-border); /* Green border - Palestinian flag */
    border-radius: 0; /* SWYFT: no border radius */
    margin: 1.5rem 0;
    overflow: hidden;
    box-shadow: none; /* SWYFT: no shadows */
    position: relative;
    max-height: calc(100vh - var(--header-height) - 2rem);
    display: flex;
    flex-direction: column;
  }
  
  /* Remove decorative top gradient border */
  .code-block::before {
    display: none;
  }
  
  .code-block pre {
    color: var(--color-code-foreground);
    font-family: var(--font-stack--monospace);
    font-size: var(--code-font-size);
    line-height: 1.6;
    margin: 0;
    padding: 1.5rem;
    overflow-x: auto;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-width: 100%;
    flex: 1;
    min-height: 0;
  }
  
  .code-block code {
    color: var(--color-code-foreground);
    background: transparent;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
  }

  /* Code copy button */
  .code-copy-button {
    user-select: none;
  }

  .code-copy-button:hover {
    background-color: var(--color-background-hover) !important;
  }

  .code-copy-button.copied {
    color: var(--color-success) !important;
  }

  .code-copy-button.copied .copy-icon {
    color: var(--color-success);
  }

  .code-copy-button:active {
    transform: scale(0.95);
  }
  
  /* Java Syntax Highlighting - Light Theme (Palestinian Flag Colors) */
  .code-block code .java-keyword {
    color: #000000;
    font-weight: 700;
  }
  
  .code-block code .java-type {
    color: #007A3D;
    font-weight: 600;
  }
  
  .code-block code .java-literal {
    color: #CE1126;
    font-weight: 500;
  }
  
  .code-block code .java-string {
    color: #007A3D;
  }
  
  .code-block code .java-number {
    color: #CE1126;
  }
  
  .code-block code .java-comment {
    color: #666666;
    font-style: italic;
  }
  
  .code-block code .java-annotation {
    color: #CE1126;
    font-weight: 600;
  }
  
  /* Java Syntax Highlighting - Dark Theme (Palestinian Flag Colors) */
  html[data-theme="dark"] .code-block code .java-keyword {
    color: #FFFFFF;
    font-weight: 700;
  }
  
  html[data-theme="dark"] .code-block code .java-type {
    color: #007A3D;
    font-weight: 600;
  }
  
  html[data-theme="dark"] .code-block code .java-literal {
    color: #CE1126;
    font-weight: 500;
  }
  
  html[data-theme="dark"] .code-block code .java-string {
    color: #007A3D;
  }
  
  html[data-theme="dark"] .code-block code .java-number {
    color: #CE1126;
  }
  
  html[data-theme="dark"] .code-block code .java-comment {
    color: #999999;
    font-style: italic;
  }
  
  html[data-theme="dark"] .code-block code .java-annotation {
    color: #CE1126;
    font-weight: 600;
  }
  
  /* Code header styles for minimize/maximize functionality */
  .code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--color-background-secondary);
    border-bottom: 1px solid var(--color-background-border);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    font-size: 0.9em;
    color: var(--color-foreground-secondary);
    font-weight: 500;
    flex-shrink: 0;
  }
  
  .code-toggle-btn {
    background: none;
    border: none;
    color: var(--color-foreground-secondary);
    cursor: pointer;
    font-size: 1.2em;
    font-weight: bold;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
    transition: background-color 0.2s;
  }
  
  .code-toggle-btn:hover {
    background-color: var(--color-background-hover);
  }
  
  .code-toggle-btn:active {
    background-color: var(--color-background-border);
  }
  
  /* Dark theme adjustments for code header */
  [data-theme="dark"] .code-header {
    background: var(--color-background-secondary);
    border-bottom-color: var(--color-background-border);
    color: var(--color-foreground-secondary);
  }
  
  [data-theme="dark"] .code-toggle-btn {
    color: var(--color-foreground-secondary);
  }
  
  [data-theme="dark"] .code-toggle-btn:hover {
    background-color: var(--color-background-hover);
  }
  
  /* Mobile adjustments for code header */
  @media (max-width: 48em) {
    .code-header {
      padding: 6px 10px;
      font-size: 0.85em;
    }
    
    .code-toggle-btn {
      width: 18px;
      height: 18px;
      font-size: 1.1em;
    }
  }
  
  /* Code tabs container - SWYFT style */
  .code-tabs-container {
    background: var(--color-code-background);
    border: 1px solid var(--color-background-border); /* SWYFT: simple border */
    border-radius: 0; /* SWYFT: no border radius */
    margin: 1.5rem 0;
    overflow: hidden;
    box-shadow: none; /* SWYFT: no shadows */
    position: relative;
    max-height: calc(100vh - var(--header-height) - 2rem);
    display: flex;
    flex-direction: column;
  }
  
  /* Remove decorative top gradient border */
  .code-tabs-container::before {
    display: none;
  }
  
  .code-tabs-header {
    display: flex;
    background: var(--color-background-primary); /* SWYFT: simple background */
    border-bottom: 1px solid var(--color-background-border);
    overflow-x: auto;
    padding-top: 0; /* SWYFT: no extra padding */
    flex-shrink: 0;
    align-items: center;
  }
  
  .code-tab-button {
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-bottom: 1px solid transparent; /* SWYFT: simpler border */
    color: var(--color-foreground-secondary);
    cursor: pointer;
    font-size: 14px; /* Increased font size */
    font-weight: 400; /* SWYFT body weight */
    white-space: nowrap;
    transition: all ease 0.3s; /* SWYFT anchor-transition */
    font-family: var(--font-stack--monospace);
    position: relative;
  }
  
  .code-tab-button:hover {
    background: var(--color-background-hover);
    /* SWYFT: no other changes on hover */
  }
  
  .code-tab-button[data-active="true"],
  .code-tab-button.active {
    background: var(--color-background-primary);
    border-bottom-color: var(--color-foreground-primary); /* SWYFT: use primary color */
    color: var(--color-foreground-primary);
    font-weight: 400; /* SWYFT: consistent weight */
  }
  
  .code-tabs-content {
    position: relative;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
  }
  
  .code-tab-content {
    display: none;
  }
  
  .code-tab-content.active {
    display: block;
  }
  
  .code-tab-content {
    height: 100%;
    display: flex;
    flex-direction: column;
  }
  
  .code-tab-content .code-block {
    border: none;
    border-radius: 0;
    margin: 0;
    box-shadow: none;
    max-height: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
  }
  
  .code-tab-content .code-block pre {
    flex: 1;
    min-height: 0;
  }
  
  .code-tab-content .code-block::before {
    display: none;
  }
  
  /* Dark theme adjustments for code tabs */
  html[data-theme="dark"] .code-tabs-container {
    background: var(--color-code-background);
    border-color: var(--color-background-border);
  }
  
  html[data-theme="dark"] .code-tabs-header {
    background: var(--color-background-secondary);
    border-bottom-color: var(--color-background-border);
  }
  
  html[data-theme="dark"] .code-tab-button {
    color: var(--color-foreground-secondary);
  }
  
  html[data-theme="dark"] .code-tab-button:hover {
    background: var(--color-background-hover);
  }
  
  html[data-theme="dark"] .code-tab-button[data-active="true"],
  html[data-theme="dark"] .code-tab-button.active {
    background: var(--color-background);
    border-bottom-color: var(--color-brand-primary);
    color: var(--color-brand-primary);
  }
  
  /* Mobile adjustments for code tabs */
  @media (max-width: 48em) {
    .code-tab-button {
      padding: 8px 12px;
      font-size: 0.85em;
    }
  }
  
  /* Lists */
  ol, ul {
    margin-bottom: 1rem;
    margin-top: 1rem;
    padding-left: 1.2rem;
  }
  
  ol li > p:first-child,
  ul li > p:first-child {
    margin-bottom: 0.25rem;
    margin-top: 0.25rem;
  }
  
  ol li > p:last-child,
  ul li > p:last-child {
    margin-top: 0.25rem;
  }
  
  /* Special content boxes - SWYFT style */
  .rules-box {
    background: var(--color-background-primary); /* SWYFT: flat background */
    border: 1px solid var(--color-background-border); /* SWYFT: simple border */
    border-radius: 0; /* SWYFT: no border radius */
    padding: 1.5rem;
    margin: 2rem 0;
    box-shadow: none; /* SWYFT: no shadows */
    position: relative;
    overflow: hidden;
  }
  
  /* Remove decorative left border */
  .rules-box::before {
    display: none;
  }
  
  .rules-box h3 {
    color: var(--color-brand-primary);
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    padding-left: 1rem;
  }
  
  .rules-box h4 {
    color: var(--color-foreground-secondary);
    font-size: 1rem;
    font-weight: 500;
    margin: 0.5rem 0 1rem 0;
    padding-left: 1rem;
  }
  
  .rules-box ul {
    margin: 0;
    padding-left: 1.5rem;
  }
  
  .rules-box li {
    margin-bottom: 0.75rem;
    line-height: 1.6;
    color: var(--color-foreground-primary);
    padding-left: 0.5rem;
  }
  
  .rules-box li:last-child {
    margin-bottom: 0;
  }
  
  .rules-box strong {
    color: var(--color-brand-primary);
    font-weight: 600;
  }
  
  .exercise-box {
    background: var(--color-background-primary);
    border: 1px solid var(--color-background-border); /* SWYFT: simple border */
    border-radius: 0; /* SWYFT: no border radius */
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: none; /* SWYFT: no shadows */
    position: relative;
    overflow: hidden;
  }
  
  /* Remove decorative gradient border */
  .exercise-box::before {
    display: none;
  }
  
  .hint-box {
    background-color: #faf2e6;
    border: 2px solid #ff9c08;
    color: #333333;
    padding: 1em;
    margin-top: 1em;
    border-radius: 4px;
  }
  
  .hint-box h5,
  .hint-box p {
    margin-top: 0;
    color: #333333;
  }
  
  
  .exercise-code {
    margin-top: 0.5rem;
    border-left: 4px solid var(--color-header-border);
    background: var(--color-code-background);
  }
  
  .exercise-code pre {
    margin: 0;
    padding: 1rem;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-width: 100%;
  }
  
  .exercise-code code {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--color-code-foreground);
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
  }
  
  
  
  
  .data-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
  }
  
  .data-type-card {
    background: var(--color-background-primary);
    color: var(--color-foreground-primary);
    padding: 2rem;
    border-radius: 0; /* SWYFT: no border radius */
    text-align: center;
    transition: all ease 0.3s; /* SWYFT anchor-transition */
    border: 1px solid var(--color-background-border); /* SWYFT: simple border */
    box-shadow: none; /* SWYFT: no shadows */
    position: relative;
    overflow: hidden;
  }
  
  /* Remove decorative top border gradient */
  .data-type-card::before {
    display: none;
  }
  
  .data-type-card:hover {
    background-color: var(--color-background-hover);
    border-color: var(--color-background-border);
    /* SWYFT: no transforms or shadows, just background change */
  }
  
  .data-type-card h4 {
    color: var(--color-brand-primary);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
  }
  
  .data-type-card code {
    background: var(--color-code-background);
    color: var(--color-code-foreground);
    display: block;
    margin: 1rem 0;
    padding: 1rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-stack--monospace);
    border: 1px solid var(--color-background-border);
  }
  
  
  
  /* Footer */
  footer {
    display: flex;
    flex-direction: column;
    font-size: var(--font-size--small);
    margin-top: 2rem;
  }
  
  .bottom-of-page {
    align-items: center;
    border-top: 1px solid var(--color-background-border);
    color: var(--color-foreground-secondary);
    display: flex;
    justify-content: space-between;
    line-height: 1.5;
    margin-top: 1rem;
    padding-bottom: 1rem;
    padding-top: 1rem;
  }
  
  .bottom-of-page .left-details {
    font-size: var(--font-size--small);
  }
  
  /* Overlay for mobile sidebar */
  .sidebar-toggle {
    display: none;
    position: absolute;
  }
  
  .overlay { /* semi-transparent background overlay while sidebar is visible */
    position: fixed;
    top: 0;
    left: 0;
    width: 0;  /* Initially hidden */
    height: 0;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: none; /* No animation - instant */
    z-index: 29;  /* Below sidebar, above content */
  }
  
  /* Show overlay when sidebar is open */
  @media (max-width: 63em) {
    #__navigation:checked ~ .sidebar-overlay.overlay {
      width: 100vw;
      height: 100vh;
      opacity: 1;
      transition: none; /* No animation - instant */
      pointer-events: auto;
      z-index: 29;
    }
    .sidebar-drawer {
      left: -50em;
      position: fixed;
      top: 0;
      width: 15em;
      height: 100vh;
      z-index: 30;
      transition: none; /* No animation - instant */
    }
    #__navigation:checked ~ .page .sidebar-drawer {
      left: 0;
      box-shadow: 2px 0 16px rgba(0,0,0,0.25);
      z-index: 30;
    }
    /* Do NOT shift main content on mobile overlay */
    #__navigation:checked ~ .page .main {
      margin-left: 0 !important;
      max-width: 100% !important;
      transition: none !important;
    }
  }
  
  /* #__navigation:checked ~ .sidebar-overlay {
    height: 100%;
    opacity: 1;
    width: 100%;
    transition: opacity 0.3s ease 0s, width 0s 0s, height 0s 0s; 
  } */
  
  #__navigation:checked ~ .page .sidebar-drawer {
    left: 0;
    top: 0;
  }
  
  /* Shift Main Content when checkbox is checked (sidebar visible)*/
  #__navigation:checked ~ .page .main {
    max-width: calc(100% - var(--sidebar-width, 15em));
    margin-left: var(--sidebar-width, 15em);
    transition: none; /* No animation - instant */
  }
  
  /* Prevent homepage from resizing when sidebar appears */
  #__navigation:disabled ~ .page .main {
    max-width: 100% !important;
    margin-left: 0 !important;
    transition: none !important;
  }
  
  /* No transition on main content */
  .main {
    transition: none; /* No animation - instant */
  }
  
  /* Responsive design */
  @media (max-width: 82em) {
    .sidebar-drawer {
      width: calc(50% - 18.5em);
    }
  }
  
  @media (max-width: 67em) {
    .content {
      margin-left: auto;
      margin-right: auto;
      padding: 0 1em;
      max-width: 95%; /* Allow more width on smaller screens */
    }
  }
  
  @media (max-width: 63em) {
    .nav-overlay-icon {
      display: flex;
    }
    
    .sidebar-drawer {
      height: 100vh;
      left: -50em;
      position: fixed;
      top: 0;
      width: 15em;
    }
    
    .theme-toggle-header {
      display: flex;
    }
    
    /* Hide header navigation and search on mobile */
    .header-navigation {
      display: none;
    }
    
    .search-container-header {
      display: flex;
      justify-content: center;
      align-items: center;
      width: 100%;
      margin: 0 auto;
      flex: 1 1 100%;
      order: 2;
    }
    .search-input-header {
      width: 50vw;
      min-width: 120px;
      max-width: 400px;
      margin: 0 auto;
      font-size: 1rem;
      padding: 0.75rem 1rem;
      box-sizing: border-box;
    }
    .mobile-header .header-center {
      display: none;
    }
    .mobile-header .header-right {
      flex: 1 1 100%;
      display: flex;
      justify-content: center;
      align-items: center;
      width: 100%;
      margin: 0;
      padding: 0;
    }
    
    /* Show mobile sidebar navigation on small screens */
    .mobile-sidebar-nav {
      display: block;
      padding: 1rem var(--sidebar-item-spacing-horizontal);
      border-bottom: 1px solid var(--color-background-border);
      background: var(--color-sidebar-background);
      margin-bottom: 1rem;
    }
    
    /* Mobile sidebar search styles */
    .mobile-sidebar-search-container {
      margin-bottom: 1rem;
      position: relative;
      z-index: 1001; /* Ensure search results appear above other sidebar content */
    }
    
    .mobile-sidebar-search-input {
      width: 100%;
      padding: 0.75rem 1rem;
      border: 2px solid var(--color-background-border);
      border-radius: 0.5rem;
      background: var(--color-background-primary);
      color: var(--color-foreground-primary);
      font-size: 0.95rem;
      font-family: var(--font-stack);
      transition: all 0.2s ease;
      outline: none;
    }
    
    .mobile-sidebar-search-input:focus {
      border-color: var(--color-brand-primary);
      box-shadow: 0 0 0 3px rgba(var(--color-brand-primary-rgb), 0.1);
      background: var(--color-background-primary);
    }
    
    .mobile-sidebar-search-input::placeholder {
      color: var(--color-foreground-muted);
      opacity: 0.8;
    }
    
    /* Mobile search results positioning */
    .mobile-sidebar-search-container .search-results {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      z-index: 1000;
      margin-top: 0.5rem;
      max-height: 60vh;
      overflow-y: auto;
      background: var(--color-sidebar-background);
      border: 2px solid var(--color-background-border);
      border-radius: 0.75rem;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
      /* Ensure results stay within sidebar bounds */
      max-width: 100%;
      box-sizing: border-box;
    }
    
    /* Ensure mobile search results are properly styled */
    .mobile-sidebar-search-container .search-results-list {
      max-height: 50vh;
      overflow-y: auto;
    }
    
    .mobile-sidebar-search-container .search-result-item {
      padding: 0.75rem;
      border-bottom: 1px solid var(--color-background-border);
    }
    
    .mobile-sidebar-search-container .search-result-item:last-child {
      border-bottom: none;
    }
    
    /* Adjust sidebar scroll height to account for mobile navigation */
    .sidebar-scroll {
      max-height: calc(100vh - 200px); /* Account for brand area + mobile navigation */
    }
    
    .mobile-sidebar-nav .header-nav-link {
      display: flex;
      align-items: center;
      margin-bottom: 0.75rem;
      padding: 0.75rem 1rem;
      border-radius: 0.5rem;
      color: var(--color-sidebar-link-text);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: all 0.2s ease;
      border: 1px solid transparent;
      position: relative;
      overflow: hidden;
    }
    
    .mobile-sidebar-nav .header-nav-link::before {
      display: none; /* SWYFT: no decorative left border */
    }
    
    .mobile-sidebar-nav .header-nav-link:hover {
      background-color: var(--color-sidebar-item-background--hover);
      border-color: var(--color-background-border);
      /* SWYFT: no transforms, just background change */
    }
    
    .mobile-sidebar-nav .header-nav-link:hover::before {
      display: none; /* SWYFT: no decorative elements */
    }
    
    .mobile-sidebar-nav .header-nav-link.active {
      background: var(--color-background-hover);
      color: var(--color-sidebar-link-text--top-level);
      border-color: var(--color-background-border);
      /* SWYFT: no gradients or shadows */
    }
    
    .mobile-sidebar-nav .header-nav-link.active::before {
      display: none; /* SWYFT: no decorative elements */
    }
    
    .mobile-sidebar-nav .header-nav-link:last-child {
      margin-bottom: 0;
    }
    
    .mobile-sidebar-nav {
      padding-bottom: 1rem; /* Add bottom padding to mobile navigation */
    }
    
    .page {
      flex-direction: column;
      justify-content: center;
    }
  
    .mobile-header {
      display: flex; /* Make sure it's displayed within this media query */
      /* The positioning and transform styles above will still apply */
    }
    
    /* Ensure the main content area accounts for the fixed header */
    .main {
      margin-top: var(--header-height);
    }
  }
  
  @media (max-width: 48em) {
    .content {
      overflow-x: auto;
      width: 100%;
      max-width: 98%; /* Use almost full width on very small screens */
      padding: 0 0.5em;
    }
    
    .code-block pre {
      padding: 1rem 0.75rem; /* Reduce padding on small screens */
      font-size: 0.9rem; /* Slightly smaller font for code on small screens */
    }
    
    .exercise-code pre {
      padding: 0.75rem;
      font-size: 0.9rem;
    }
  }
  
  @media (max-width: 46em) {
    .bottom-of-page {
      flex-direction: column-reverse;
      gap: 0.25rem;
      text-align: center;
    }
    
    .data-types-grid {
      grid-template-columns: 1fr;
    }
    
    .link-grid {
      grid-template-columns: 1fr;
    }
    
    .link-grid-button {
      padding: 1rem;
      font-size: 1rem;
      min-height: 60px;
    }
    
    /* Ensure header remains accessible on very small screens */
    .mobile-header {
      min-height: var(--header-height);
      padding: 0 0.5rem;
    }
    
    .mobile-header .header-left,
    .mobile-header .header-right {
      padding: 0 0.5rem;
    }
    
    .nav-overlay-icon .icon {
      font-size: 1.2em;
    }
    
    .theme-toggle {
      padding: 0.5rem;
    }
  }
  
  /* Extra small screens - ensure header buttons are always accessible */
  @media (max-width: 32em) {
    .mobile-header {
      padding: 0 0.25rem;
    }
    
    .mobile-header .header-left,
    .mobile-header .header-right {
      padding: 0 0.25rem;
    }
    
    .nav-overlay-icon {
      min-width: 44px; /* Ensure touch target is large enough */
      min-height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    
    .theme-toggle {
      min-width: 44px; /* Ensure touch target is large enough */
      min-height: 44px;
    }
    
    /* Mobile sidebar search adjustments for very small screens */
    .mobile-sidebar-search-input {
      padding: 0.875rem 1rem; /* Slightly larger padding for better touch targets */
      font-size: 1rem; /* Larger font for better readability */
    }
    
    .mobile-sidebar-search-container .search-results {
      max-height: 50vh; /* Slightly smaller on very small screens */
    }
  }
  
  /* Add hierarchical navigation styles at the end of the file */
  
  /* Parent Tab Styles */
  .parent-tab {
      position: relative;
  }
  
  .parent-reference {
      display: flex;
      align-items: center;
      font-weight: 600;
      color: var(--color-sidebar-brand-text);
      text-decoration: none;
      padding: 0.5rem var(--sidebar-item-spacing-horizontal);
      border-radius: 0.25rem;
      transition: all 0.15s ease;
  }
  
  .parent-reference:hover {
      background-color: var(--color-sidebar-item-background--hover);
      color: var(--color-sidebar-link-text--top-level);
      /* SWYFT: no transforms, just background change */
  }
  
  .expand-icon {
      margin-right: 0.5rem;
      font-size: 0.75rem;
      transition: transform 0.2s ease;
      user-select: none;
      font-family: Arial, sans-serif;
      line-height: 1;
      width: 1.2em;
      text-align: center;
      font-weight: bold;
  }
  
  /* Child Navigation Container */
  .children-nav {
      margin-left: 1rem;
      margin-top: 0.25rem;
      margin-bottom: 0.25rem;
      overflow: hidden;
      transition: all 0.3s ease;
  }
  
  .children-nav.expanded {
      max-height: none;
      opacity: 1;
  }
  
  .children-nav.collapsed {
      max-height: 0;
      opacity: 0;
      margin: 0;
  }
  
  /* Child Tab Styles */
  .child-tab {
      margin: 0;
      padding: 0;
  }
  
  .child-reference {
      display: block;
      color: var(--color-sidebar-link-text);
      text-decoration: none;
      padding: 0.375rem var(--sidebar-item-spacing-horizontal);
      border-radius: 0; /* SWYFT: no border radius */
      font-size: 0.9rem;
      transition: all ease 0.3s; /* SWYFT anchor-transition */
      border-left: none; /* SWYFT: no decorative borders */
  }
  
  .child-reference:hover {
      background-color: var(--color-sidebar-item-background--hover);
      color: var(--color-sidebar-link-text--top-level);
      /* SWYFT: no decorative borders, just background change */
  }
  
  /* Active/Current Page Styles - SWYFT style */
  .parent-tab.current-page > .parent-reference {
      background-color: var(--color-background-hover);
      color: var(--color-sidebar-link-text--top-level);
      font-weight: 700;
      /* SWYFT: no decorative borders */
  }
  
  .child-tab.current-page > .child-reference {
      background-color: var(--color-background-hover);
      color: var(--color-sidebar-link-text--top-level);
      font-weight: 700;
      /* SWYFT: no decorative borders */
  }
  
  /* Sidebar scroll */
  .sidebar-scroll {
      scroll-behavior: auto;
  }
  
  /* Responsive adjustments for mobile */
  @media (max-width: 67em) {
      .children-nav {
          margin-left: 0.5rem;
      }
      
      .child-reference {
          padding: 0.25rem var(--sidebar-item-spacing-horizontal);
          font-size: 0.95rem;
      }
      
      .parent-reference {
          padding: 0.375rem var(--sidebar-item-spacing-horizontal);
      }
  }
  
  /* Hide mobile sidebar navigation on larger screens */
  @media (min-width: 64em) {
      .mobile-sidebar-nav {
          display: none;
      }
  }
  
  /* Focus states for accessibility */
  .parent-reference:focus,
  .child-reference:focus {
      outline: 2px solid var(--color-brand-primary);
      outline-offset: 2px;
  }
  
  /* Enhanced visual hierarchy */
  .parent-reference {
      border-bottom: none; /* SWYFT: no decorative borders */
      margin-bottom: 0.25rem;
  }
  
  .parent-tab:last-child .parent-reference {
      border-bottom: none;
  }
  
  /* Smooth animations for expand/collapse */
  .children-nav {
      transform-origin: top;
  }
  
  .children-nav.expanded {
      animation: expandDown 0.3s ease-out;
  }
  
  .children-nav.collapsed {
      animation: collapseUp 0.3s ease-in;
  }
  
  @keyframes expandDown {
      from {
          max-height: 0;
          opacity: 0;
          transform: scaleY(0);
      }
      to {
          max-height: none;
          opacity: 1;
          transform: scaleY(1);
      }
  }
  
  @keyframes collapseUp {
      from {
          max-height: none;
          opacity: 1;
          transform: scaleY(1);
      }
      to {
          max-height: 0;
          opacity: 0;
          transform: scaleY(0);
      }
  }
  
  /* Dark theme adjustments */
  [data-theme="dark"] .parent-reference {
      color: var(--color-sidebar-brand-text);
  }
  
  [data-theme="dark"] .child-reference {
      color: var(--color-sidebar-link-text);
  }
  
  [data-theme="dark"] .parent-reference:hover,
  [data-theme="dark"] .child-reference:hover {
      color: var(--color-sidebar-link-text--top-level);
  }
  
  /* Answer button and section styles */
  .answer-toggle-btn {
      background: linear-gradient(135deg, var(--color-brand-primary), var(--color-accent));
      color: var(--color-background-primary);
      border: none;
      padding: 0.75rem 1.5rem;
      border-radius: 0.5rem;
      font-size: 0.9rem;
      font-weight: 600;
      cursor: pointer;
      margin-top: 1rem;
      transition: all 0.3s ease;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }
  
  .answer-toggle-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
      background: linear-gradient(135deg, var(--color-accent), var(--color-brand-primary));
  }
  
  .answer-toggle-btn:active {
      transform: translateY(0);
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }
  
  .answer-toggle-btn.active {
      background: linear-gradient(135deg, var(--color-error), var(--color-accent));
  }
  
  .answer-toggle-btn.active:hover {
      background: linear-gradient(135deg, var(--color-accent), var(--color-error));
  }
  
  .answer-section {
      margin-top: 1rem;
      border: 2px solid var(--color-background-border);
      border-radius: 0.5rem;
      padding: 1.5rem;
      background: var(--color-background-secondary);
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      overflow: hidden;
      /* Ensure proper spacing and prevent cutoff */
      margin-bottom: 2rem;
      word-wrap: break-word;
      overflow-wrap: break-word;
      transform-origin: top;
  }
  
  .answer-section.hidden {
      max-height: 0;
      padding: 0 1.5rem;
      border-width: 0;
      opacity: 0;
      transform: scaleY(0);
      pointer-events: none;
  }
  
  .answer-section.visible {
      max-height: none;
      opacity: 1;
      transform: scaleY(1);
      pointer-events: auto;
  }
  
  
  
  .answer-title {
      margin: 0 0 1rem 0;
      color: var(--color-brand-primary);
      font-size: 1.1rem;
      font-weight: 600;
      border-bottom: 2px solid var(--color-brand-primary);
      padding-bottom: 0.5rem;
  }
  
  .answer-item {
      margin-bottom: 1.5rem;
  }
  
  .answer-item:last-child {
      margin-bottom: 0;
  }
  
  .answer-task-label {
      margin: 0 0 0.5rem 0;
      color: var(--color-foreground-primary);
      font-size: 1rem;
      font-weight: 600;
  }
  
  .answer-code {
      margin-top: 0.5rem;
      border-left: 4px solid var(--color-brand-primary);
      background: var(--color-background-primary);
  }
  
  .answer-code pre {
      margin: 0;
      padding: 1rem;
      overflow-x: auto;
      white-space: pre-wrap;
      word-wrap: break-word;
      max-width: 100%;
  }
  
  .answer-code code {
      font-size: 0.95rem;
      line-height: 1.5;
      white-space: pre-wrap;
      word-wrap: break-word;
      overflow-wrap: break-word;
      max-width: 100%;
  }
  
  /* Ensure code blocks in answers don't get cut off */
  .answer-section .code-block {
      max-width: 100%;
      overflow-x: auto;
      word-wrap: break-word;
      overflow-wrap: break-word;
  }
  
  .answer-section .code-block pre {
      white-space: pre-wrap;
      word-wrap: break-word;
      overflow-wrap: break-word;
  }
  
  .answer-section .code-block code {
      white-space: pre-wrap;
      word-wrap: break-word;
      overflow-wrap: break-word;
  }
  
  /* Dark theme adjustments for answers */
  [data-theme="dark"] .answer-section {
      background: var(--color-background-primary);
      border-color: var(--color-background-border);
  }
  
  [data-theme="dark"] .answer-code {
      background: var(--color-background-secondary);
  }
  
  [data-theme="dark"] .answer-toggle-btn {
      box-shadow: 0 2px 4px rgba(255, 255, 255, 0.1);
  }
  
  [data-theme="dark"] .answer-toggle-btn:hover {
      box-shadow: 0 4px 8px rgba(255, 255, 255, 0.15);
  }
  
  /* Responsive adjustments for answers */
  @media (max-width: 67em) {
      .answer-toggle-btn {
          width: 100%;
          padding: 0.75rem;
          font-size: 0.95rem;
      }
      
      .answer-section {
          padding: 1rem;
      }
      
      .answer-section.hidden {
          padding: 0 1rem;
      }
      
      .answer-task-label {
          font-size: 0.9rem;
      }
      
      .answer-code code {
          font-size: 0.9rem;
      }
  }
  
  /* Notification animations */
  @keyframes slideIn {
      from {
          transform: translateX(100%);
          opacity: 0;
      }
      to {
          transform: translateX(0);
          opacity: 1;
      }
  }
  
  @keyframes slideOut {
      from {
          transform: translateX(0);
          opacity: 1;
      }
      to {
          transform: translateX(100%);
          opacity: 0;
      }
  } 
  
  @media (max-width: 63em) {
    .search-results {
      left: 0;
      right: 0;
      transform: none;
      width: 90%;
      min-width: 0;
      max-width: min(400px, calc(100vw - 2rem)); /* Prevent overflow */
      margin: 0 auto;
      border-radius: 0.75rem;
      box-sizing: border-box;
      overflow-x: hidden;
    }
  } 
  
  /* Keyboard Shortcuts Overlay Styles */
  .keyboard-shortcuts-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(4px);
      z-index: 9999;
      display: flex;
      align-items: center;
      justify-content: center;
      opacity: 0;
      visibility: hidden;
      transition: opacity 0.3s ease, visibility 0.3s ease;
  }
  
  .keyboard-shortcuts-overlay.visible {
      opacity: 1;
      visibility: visible;
  }
  
  .keyboard-shortcuts-modal {
      background-color: var(--color-background-primary);
      border: 1px solid var(--color-background-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-xl);
      max-width: 600px;
      width: 90%;
      max-height: 80vh;
      overflow-y: auto;
      position: relative;
      transform: scale(0.95);
      transition: transform 0.3s ease;
  }
  
  .keyboard-shortcuts-overlay.visible .keyboard-shortcuts-modal {
      transform: scale(1);
  }
  
  .keyboard-shortcuts-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1.5rem 1.5rem 1rem 1.5rem;
      border-bottom: 1px solid var(--color-background-border);
  }
  
  .keyboard-shortcuts-header h2 {
      margin: 0;
      font-size: 1.5rem;
      font-weight: 600;
      color: var(--color-foreground-primary);
  }
  
  .keyboard-shortcuts-close {
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--color-foreground-muted);
      cursor: pointer;
      padding: 0.5rem;
      border-radius: var(--radius-sm);
      transition: color 0.2s ease, background-color 0.2s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 2rem;
      height: 2rem;
  }
  
  .keyboard-shortcuts-close:hover {
      color: var(--color-foreground-primary);
      background-color: var(--color-background-hover);
  }
  
  .keyboard-shortcuts-close:focus {
      outline: 2px solid var(--color-brand-primary);
      outline-offset: 2px;
  }
  
  .keyboard-shortcuts-close:focus:not(:focus-visible) {
      outline: none;
  }
  
  .keyboard-shortcuts-content {
      padding: 1.5rem;
  }
  
  .shortcut-group {
      margin-bottom: 2rem;
      background: var(--color-background-primary);
      border: 1px solid var(--color-background-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
  }
  
  .shortcut-group:last-child {
      margin-bottom: 0;
  }
  
  .shortcut-group h3 {
      margin: 0 0 1rem 0;
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--color-foreground-primary);
      background: var(--color-background-secondary);
      border-bottom: 1px solid var(--color-background-border);
      border-radius: var(--radius-lg) var(--radius-lg) 0 0;
      padding: 8px 12px;
      font-size: 0.9em;
      color: var(--color-foreground-secondary);
      font-weight: 500;
  }
  
  .shortcut-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.75rem 1rem;
      border-bottom: 1px solid var(--color-background-border);
      background: var(--color-background-primary);
  }
  
  .shortcut-item:last-child {
      border-bottom: none;
  }
  
  .shortcut-item:hover {
      background: var(--color-background-hover);
  }
  
  .shortcut-key {
      background-color: var(--color-code-background);
      color: var(--color-code-foreground);
      padding: 0.25rem 0.5rem;
      border-radius: var(--radius-sm);
      font-family: var(--font-stack--monospace);
      font-size: 0.875rem;
      font-weight: 500;
      border-top: 2px solid var(--color-brand-primary);
      border-left: none;
      border-right: none;
      border-bottom: none;
      min-width: 120px;
      text-align: center;
      user-select: none;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
  }
  
  .shortcut-key:hover {
      transform: translateY(-1px);
      box-shadow: var(--shadow-md);
  }
  
  .shortcut-description {
      color: var(--color-foreground-secondary);
      font-size: 0.9rem;
      flex: 1;
      margin-left: 1rem;
  }
  
  /* Dark theme adjustments */
  [data-theme="dark"] .keyboard-shortcuts-modal {
      background-color: var(--color-background-secondary);
      border-color: var(--color-background-border);
  }
  
  [data-theme="dark"] .keyboard-shortcuts-header {
      border-bottom-color: var(--color-background-border);
  }
  
  [data-theme="dark"] .shortcut-group h3 {
      background: var(--color-background-secondary);
      border-bottom-color: var(--color-background-border);
      color: var(--color-foreground-secondary);
  }
  
  [data-theme="dark"] .shortcut-group {
      background: var(--color-background-secondary);
      border-color: var(--color-background-border);
  }
  
  [data-theme="dark"] .shortcut-item {
      border-bottom-color: var(--color-background-border);
      background: var(--color-background-secondary);
  }
  
  [data-theme="dark"] .shortcut-item:hover {
      background: var(--color-background-hover);
  }
  
  [data-theme="dark"] .shortcut-key {
      background-color: var(--color-code-background);
      color: var(--color-code-foreground);
      border-top-color: var(--color-brand-primary);
  }
  
  /* Responsive design */
  @media (max-width: 48em) {
      .help-toggle {
          width: 1.75rem;
          height: 1.75rem;
          font-size: 0.9rem;
      }
      
      .help-icon {
          font-size: 0.9rem;
      }
      
      .keyboard-shortcuts-modal {
          width: 95%;
          max-height: 90vh;
      }
      
      .keyboard-shortcuts-header {
          padding: 1rem 1rem 0.75rem 1rem;
      }
      
      .keyboard-shortcuts-header h2 {
          font-size: 1.25rem;
      }
      
      .keyboard-shortcuts-content {
          padding: 1rem;
      }
      
      .shortcut-item {
          flex-direction: column;
          align-items: flex-start;
          gap: 0.5rem;
      }
      
      .shortcut-key {
          min-width: auto;
          align-self: flex-start;
      }
      
      .shortcut-description {
          margin-left: 0;
      }
  }
  
  @media (max-width: 32em) {
      .keyboard-shortcuts-modal {
          width: 98%;
          max-height: 95vh;
      }
      
      .keyboard-shortcuts-header {
          padding: 0.75rem 0.75rem 0.5rem 0.75rem;
      }
      
      .keyboard-shortcuts-content {
          padding: 0.75rem;
      }
      
      .shortcut-group {
          margin-bottom: 1.5rem;
      }
      
      .shortcut-group h3 {
          font-size: 1rem;
          margin-bottom: 0.75rem;
      }
      
      .shortcut-item {
          padding: 0.5rem 0;
      }
  }
  
  /* Help toggle button styles */
  .help-toggle-container {
      display: flex;
      align-items: center;
  }
  
  .help-toggle {
      background: none;
      color: var(--color-foreground-secondary);
      border: none;
      border-radius: var(--radius-sm);
      box-shadow: none;
      padding: 0.5rem;
      display: flex;
      align-items: center;
      font-size: 0.9rem;
      font-weight: 500;
      cursor: pointer;
      margin-right: 0.75rem;
      outline: none;
      transition: color 0.18s, background 0.18s;
  }
  .help-toggle:hover, .help-toggle:focus {
      background: var(--color-background-hover);
      color: var(--color-foreground-primary);
  }
  .help-icon {
      font-size: 1rem;
      font-weight: bold;
      margin-right: 0;
  }
  
  /* Undo overlay/modal redesign, keep previous modal/card style */
  /* ...keep previous overlay/modal styles here... */
  
  /* Keyboard shortcut key: no border, background is lightest/darkest color */
  .shortcut-key {
      background: var(--color-background-primary);
      color: var(--color-code-foreground);
      padding: 0.25rem 0.5rem;
      border-radius: var(--radius-sm);
      font-family: var(--font-stack--monospace);
      font-size: 0.875rem;
      font-weight: 500;
      border: none;
      min-width: 120px;
      text-align: center;
      user-select: none;
      box-shadow: var(--shadow-sm);
      transition: all 0.2s ease;
  }
  [data-theme="dark"] .shortcut-key {
      background: var(--color-background-primary);
      color: var(--color-code-foreground);
  }
  :root .shortcut-key {
      background: var(--color-background-secondary);
      color: var(--color-code-foreground);
  }
  
  /* Notification popup styles */
  .notification-popup {
      position: fixed;
      top: calc(var(--header-height) + 10px);
      right: 20px;
      background: var(--color-background-secondary);
      color: var(--color-foreground-secondary);
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--color-background-border);
      font-family: var(--font-stack--monospace);
      font-size: 0.75rem;
      font-weight: 400;
      z-index: 10000;
      opacity: 0;
      transform: translateY(10px);
      transition: all 0.2s ease;
      max-width: 200px;
      word-wrap: break-word;
      cursor: pointer;
      user-select: none;
  }
  
  .notification-popup:hover {
      background: var(--color-background-hover);
      color: var(--color-foreground-primary);
      border-color: var(--color-brand-primary);
  }
  
  /* Dark theme adjustments for notification */
  [data-theme="dark"] .notification-popup {
      background: var(--color-background-secondary);
      color: var(--color-foreground-secondary);
      border-color: var(--color-background-border);
  }
  
  [data-theme="dark"] .notification-popup:hover {
      background: var(--color-background-hover);
      color: var(--color-foreground-primary);
      border-color: var(--color-brand-primary);
  }
  
  /* Mobile responsive adjustments */
  @media (max-width: 48em) {
      .notification-popup {
          top: calc(var(--header-height) + 5px);
          right: 10px;
          left: 10px;
          max-width: none;
          transform: translateY(5px);
      }
      
      .notification-popup:hover {
          transform: translateY(0);
      }
  }

/* Page Navigation Buttons */
.page-navigation {
    display: flex !important;
    justify-content: space-between;
    align-items: stretch;
    margin-top: 3rem;
    margin-bottom: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-background-border);
    gap: 1rem;
    width: 100%;
    min-height: 50px; /* Ensure it has height even if empty */
}

.nav-button {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 1rem 1.25rem;
    background-color: var(--color-background-primary);
    border: 1px solid var(--color-background-border); /* SWYFT: simple border */
    border-radius: 0; /* SWYFT: no border radius */
    color: var(--color-foreground-primary);
    font-family: var(--font-stack);
    font-size: 14px; /* Increased font size */
    font-weight: 400; /* SWYFT body weight */
    letter-spacing: 0.02em; /* SWYFT body letter spacing */
    cursor: pointer;
    transition: all ease 0.3s; /* SWYFT anchor-transition */
    text-decoration: none;
    max-width: 48%;
    min-width: 0;
    flex: 1;
    box-shadow: none; /* SWYFT: no shadows */
    position: relative;
    overflow: hidden;
    text-align: left;
}

.nav-button::before {
    display: none; /* SWYFT: no decorative gradients */
}

.nav-button:hover {
    background-color: var(--color-background-hover);
    border-color: var(--color-background-border);
    color: var(--color-foreground-primary);
    /* SWYFT: no transforms or shadows */
}


.nav-button-prev {
    justify-content: flex-start;
    text-align: left;
}

.nav-button-next {
    justify-content: flex-end;
    margin-left: auto;
    text-align: right;
}

.nav-button-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    min-width: 0;
    flex: 1;
    gap: 0.25rem;
    text-align: left;
}

.nav-button-next .nav-button-content {
    align-items: flex-end;
    text-align: right;
}

.nav-button-label {
    font-family: var(--font-stack);
    font-size: var(--font-size--small--2);
    color: var(--color-foreground-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    line-height: 1.2;
    text-align: inherit;
    display: block;
}

.nav-button-prev .nav-button-label {
    text-align: left;
}

.nav-button-next .nav-button-label {
    text-align: right;
}

.nav-button-title {
    font-family: var(--font-stack);
    font-size: 0.95rem;
    color: var(--color-foreground-primary);
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 100%;
    line-height: 1.4;
    text-align: inherit;
    display: block;
}

.nav-button-prev .nav-button-title {
    text-align: left;
}

.nav-button-next .nav-button-title {
    text-align: right;
}

.nav-button:hover .nav-button-title {
    color: var(--color-brand-primary);
}

.nav-button-icon {
    font-size: 1.5rem;
    color: var(--color-brand-primary);
    font-weight: normal;
    flex-shrink: 0;
    transition: transform 0.3s ease;
    line-height: 1;
    display: flex;
    align-items: center;
}

.nav-button-prev:hover .nav-button-icon {
    transform: translateX(-4px);
}

.nav-button-next:hover .nav-button-icon {
    transform: translateX(4px);
}

/* Mobile responsive styles for navigation buttons */
@media (max-width: 768px) {
    .page-navigation {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .nav-button {
        max-width: 100%;
        width: 100%;
    }
    
    .nav-button-next {
        margin-left: 0;
    }
    
    .nav-button-next .nav-button-content {
        align-items: flex-start;
        text-align: left;
    }
}