@font-face {
    /* This is the name you are creating for your font */
    font-family: 'Pixelify Sans'; 
    
    /* This is the path to the font file (relative to your CSS file) */
    src: url('../fonts/Pixelify_Sans/PixelifySans-VariableFont_wght.ttf') format('truetype-variations');
  }

@font-face {
    /* This is the name you are creating for your font */
    font-family: 'MS Sans Serif'; 
    
    /* This is the path to the font file (relative to your CSS file) */
    src: url('./fonts/MS Sans Serif.ttf') format('truetype-variations');
}

/* --- General Styling --- */
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; margin: 0; padding: 0; line-height: 1.6; background-color: #fdfdfd; }
.project-wrapper { display: flex; flex-direction: row; }

/* --- Sidebar Styling --- */
.sidebar { width: 300px; height: 100vh; position: fixed; top: 0; left: 0; background-color: #f7f7f7; border-right: 1px solid #e0e0e0; padding: 25px; overflow-y: auto; box-sizing: border-box; }
.sidebar h2 { margin-top: 0; font-size: 1.2rem; border-bottom: 1px solid #ccc; padding-bottom: 10px; }
.sidebar ul { list-style: none; padding-left: 0; }
.sidebar li { margin-bottom: 5px; position: relative; /* Needed for the toggle button */ }

/* The main navigation link (the text) */
.sidebar a.nav-link { 
    text-decoration: none; 
    color: #333; 
    display: block; 
    padding: 4px 8px 4px 28px; /* Added left padding to make space for the toggle */
    border-radius: 4px; 
    transition: background-color 0.2s ease; 
}
.sidebar a.nav-link:hover { background-color: #e9e9e9; }
.sidebar a.nav-link.active { background-color: #e0e7ff; color: #0044cc; font-weight: 600; }

/* The sub-chapter links */
.sidebar a.sub-link {
    text-decoration: none; 
    color: #333; 
    display: block; 
    padding: 4px 8px; 
    border-radius: 4px; 
    transition: background-color 0.2s ease;
}
.sidebar a.sub-link:hover { background-color: #e9e9e9; }

/* --- NEW: Accordion Styling --- */
.sidebar ul ul {
    padding-left: 20px;
    font-size: 0.95rem;
    display: none; /* Hide sub-menus by default */
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    margin-top: 5px;
}
.sidebar li.open > ul {
    display: block;
    max-height: 500px;
    transition: max-height 0.5s ease-in;
}



/* The toggle button (the arrow) */
.toggle-btn {
    position: absolute;
    left: 0;
    top: 0;
    width: 24px; /* Clickable area for the arrow */
    height: 28px; /* Same height as the link padding */
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    user-select: none; /* Prevent text selection */
}
.toggle-btn::after {
    content: '►'; /* Right-pointing arrow */
    font-size: 0.7em;
    color: #777;
    transition: transform 0.3s ease-out;
}

/* When open, rotate the arrow */
.sidebar li.open > .toggle-btn::after {
    transform: rotate(90deg);
}

/* Hide toggle button if there is no sub-menu */
.toggle-btn.no-submenu {
    display: none;
}

/* --- Content Area Styling --- */
.content { margin-left: 300px; padding: 40px 50px; width: 100%; max-width: 1200px; box-sizing: border-box; }
.content section { margin-bottom: 60px; padding-top: 20px; }
h1 {
    font-size: 5rem;
    padding-bottom: 15px;
    font-family: "Pixelify Sans", "sans-serif";
    margin-top: 5px;
    margin-bottom: 5px;
}
.subtitle { 
    font-family: 'Pixelify Sans', sans-serif;
    font-size: 2em;
    margin-top: 5px;
    margin-bottom: 5px;
    border-bottom: 1px solid #eee;
}
h2 { font-size: 2rem; margin-top: 40px; border-bottom: 1px solid #eee; background-color: #fff; padding-bottom: 10px; position: sticky; top: 0; z-index: 10; }
h3 { font-size: 1.5rem; margin-top: 30px; }
h4 { font-size: 1rem; margin-top: 25px; margin-bottom: 5px; }
blockquote { border-left: 4px solid #e0e0e0; padding-left: 20px; margin-left: 0; font-style: italic; color: #555; }
.lead {     font-size: 1.2rem; color: #a5a5a5; font-weight: 300; }
.prompt { background: #f4f4f4; border-left: 4px solid #ccc; padding: 15px 30px; margin: 20px 0; }
.chatbot { background: #e8f0fe; border-left: 4px solid #4a90e2; padding: 15px 30px; margin: 20px 0; }
.highlight { color: #0044cc; }

/* --- NEW: Mobile Styling --- */

/* Mobile toggle buttons are hidden by default on desktop */
.sidebar-toggle {
    display: none;
    padding: 8px 12px;
    font-size: 1rem;
    background: #f0f0f0;
    border: 1px solid #ccc;
    border-radius: 4px;
    cursor: pointer;
}

.sidebar a.sub-link.sub-nested {
    padding-left: 35px; /* Extra indent */
    font-size: 0.9em;   /* Slightly smaller */
    color: #555;
}

.sidebar-footer {
    margin-top: 25px; /* Add space above the link */
    padding-top: 15px; /* Add padding above the line */
    border-top: 1px solid #e0e0e0; /* Separator line */
}

.sidebar-footer a {
    text-decoration: none;
    color: #555; /* Muted color */
    font-size: 0.95rem;
    font-weight: 500;
    display: flex; /* This aligns the icon and text nicely */
    align-items: center;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.sidebar-footer a:hover {
    background-color: #e9e9e9;
    color: #111; /* Darken text on hover */
}

@media (max-width: 900px) {
    .project-wrapper { flex-direction: column; }
    .sidebar { 
        position: static; /* It's open by default, as requested */
        width: 100%; 
        height: auto; 
        border-right: none; 
        border-bottom: 1px solid #e0e0e0; 
    }
    .content { margin-left: 0; padding: 20px 30px; }

    /* Show mobile toggle buttons */
    .sidebar-toggle {
        display: block;
    }

    #sidebar-close-btn {
        margin-bottom: 15px;
        width: 100%;
    }
    
    #sidebar-open-btn {
        position: fixed; /* Lets it float */
        bottom: 20px;
        right: 20px;
        z-index: 100;
        display: none; /* Hidden by default, only shown when sidebar is closed */
    }

    /* When sidebar is closed on mobile */
    body.sidebar-closed .sidebar {
        display: none;
    }
    body.sidebar-closed #sidebar-open-btn {
        display: block;
    }
}

.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content-wrapper {
    max-width: 90%;
    max-height: 90vh;
    position: relative;
}

#modal-content-container {
    position: relative;
}

/* This rule is fine for images and videos */
#modal-content-container img,
#modal-content-container video {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    height: auto;
}

/* THIS IS THE NEW, HYPER-SPECIFIC RULE. 
  By adding .modal-content-wrapper, this rule is now
  more specific than the one in customgallery.css
  and will win.
*/
.modal-content-wrapper #modal-content-container iframe {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    height: auto;
}

.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    color: white;
    font-size: 30px;
    cursor: pointer;
    z-index: 1001;
}

.modal-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.modal-nav button {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    cursor: pointer;
    border-radius: 4px;
}

.modal-nav button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.grid-item {
    cursor: pointer;
    transition: transform 0.2s;
}

.grid-item:hover {
    transform: scale(1.02);
}

/* --- Scroll to Top Button --- */
#scrollToTopBtn {
    position: fixed;
    bottom: 20px;
    right: 30px;
    z-index: 100; /* Keep it on top */
    border: none;
    outline: none;
    background-color: #555; /* A dark gray background */
    color: white;
    cursor: pointer;
    padding: 0; /* Reset padding */
    border-radius: 50%; /* Circular */
    width: 50px;
    height: 50px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: background-color 0.3s, opacity 0.3s, visibility 0.3s;
    
    /* Use flex to center the SVG icon */
    display: none; /* Hidden by default */
    align-items: center;
    justify-content: center;
  }
  
  #scrollToTopBtn:hover {
    background-color: #333; /* Darker on hover */
  }
  
  /* This class will be added by JavaScript to show the button */
  #scrollToTopBtn.show {
    display: flex; /* Show the button */
  }

  /* LLM Chat Styles */
  .prompt {
    background: #f8f9fa;
    border-left: 4px solid #007bff;
    padding: 18px 20px;
    margin: 25px 0 0 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.95em;
    line-height: 1.5;
    color: #2d3748;
    font-weight: 500;
    border-radius: 8px 0 0 8px;
}

.chatbot {
    background: #f7fafc;
    padding: 25px;
    border-left: 4px solid #38a169;
    margin: 0 0 25px 0;
    border-radius: 0 8px 8px 0;
    color: #4a5568;
    line-height: 1.6;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.chatbot ol,
.chatbot ul {
    margin: 15px 0;
    padding-left: 24px;
}

.chatbot li {
    margin-bottom: 12px;
    line-height: 1.5;
}

.chatbot b {
    color: #2d3748;
    font-weight: 600;
}

.chatbot i {
    color: #718096;
    font-style: italic;
}

.chatbot ol {
    list-style-type: decimal;
    color: #4a5568;
}

.chatbot ol ol {
    list-style-type: lower-alpha;
    margin-left: 25px;
    margin-top: 10px;
}

.chatbot ul {
    list-style-type: disc;
}

.chatbot ul ul {
    list-style-type: circle;
    margin-left: 25px;
    margin-top: 10px;
}

/* Properties Section */
.properties-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid #e2e8f0;
}

.properties-section h5 {
    color: #2d3748;
    margin-bottom: 20px;
    font-size: 1.3em;
    font-weight: 600;
}

.properties-detailed {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 15px;
    margin-top: 25px;
}

.property-item {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
    transition: all 0.3s ease;
    border-left: 4px solid #667eea;
}

.property-item:hover {
    border-color: #667eea;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
    transform: translateY(-2px);
}

.property-item code {
    background: #f7fafc;
    padding: 6px 10px;
    border-radius: 6px;
    font-weight: 600;
    color: #2d3748;
    font-size: 0.95em;
    border: 1px solid #e2e8f0;
}

.property-description {
    color: #4a5568;
    margin-top: 12px;
    line-height: 1.5;
    font-size: 0.95em;
}

/* Новые стили для статичной структуры онтологии */
.ontology-structure {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin: 20px 0;
}

.class-category {
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    margin-bottom: 20px;
    overflow: hidden;
}

.category-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-header h6 {
    margin: 0;
    font-size: 1.1em;
    font-weight: 600;
}

.category-content {
    padding: 20px;
    background: #fafbfc;
}

.class-group {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e2e8f0;
}

.class-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.class-group h7 {
    font-size: 1em;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 10px;
    display: block;
}

.class-item {
    margin: 8px 0;
    padding: 8px 12px;
    background: #f7fafc;
    border-radius: 6px;
    border-left: 3px solid #667eea;
}

.subclasses {
    margin-left: 20px;
    margin-top: 8px;
}

.subclass-item {
    margin: 4px 0;
    padding: 4px 8px;
    color: #4a5568;
}

.nested-subclasses {
    margin-left: 20px;
    border-left: 2px solid #e2e8f0;
    padding-left: 15px;
    margin-top: 5px;
    margin-bottom: 5px;
}

.deep-nested {
    margin-left: 20px;
    border-left: 1px dashed #cbd5e0;
    padding-left: 15px;
    margin-top: 5px;
    margin-bottom: 5px;
}

.class-item code,
.subclass-item code {
    background: #edf2f7;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.9em;
}

.category-description {
    color: #4a5568;
    font-style: italic;
    margin-bottom: 15px;
    padding: 10px;
    background: #f0fff4;
    border-radius: 6px;
    border-left: 4px solid #38a169;
}

/* Query Examples */
.query-example {
    margin-top: 20px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #007bff;
}

.query-example h5 {
    margin-top: 0;
    color: #495057;
    font-size: 1.1em;
}

.query-description {
    color: #6c757d;
    font-size: 0.95em;
    margin-bottom: 15px;
}

.sparql-block {
    background-color: #2d3748;
    border-radius: 6px;
    padding: 0;
    overflow: hidden;
}

.sparql-content {
    color: #e2e8f0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.85em;
    line-height: 1.4;
    padding: 20px;
    margin: 0;
    overflow-x: auto;
    white-space: pre;
}

/* Стили для competency questions */
.competency-questions {
    margin-top: 30px;
}

.question-item {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid #e2e8f0;
}

.question-item:last-child {
    border-bottom: none;
}

.question-item h5 {
    font-size: 1.2em;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.question-item h5:before {
    content: "•";
    color: #667eea;
    font-size: 1.5em;
}

.question-item p {
    font-size: 1.1em;
    color: #4a5568;
    margin-bottom: 15px;
    font-style: italic;
}

.question-item p em {
    color: #2d3748;
    font-style: normal;
    font-weight: 500;
}

.finding {
    background: #f0fff4;
    border-left: 4px solid #38a169;
    padding: 16px 20px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}

.finding strong {
    font-size: 1.1em;
    color: #2d3748;
    display: block;
    margin-bottom: 8px;
}

.finding {
    font-size: 1em;
    color: #4a5568;
    line-height: 1.5;
}

/* Results Tables */
.results-table {
    margin-top: 20px;
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.results-table h6 {
    margin: 0 0 15px 0;
    color: #2d3748;
    font-size: 1.1em;
    font-weight: 600;
}

.table-container {
    overflow-x: auto;
}

.styled-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9em;
    min-width: 400px;
}

.styled-table thead tr {
    background-color: #4a5568;
    color: white;
    text-align: left;
}

.styled-table th,
.styled-table td {
    padding: 12px 15px;
    border-bottom: 1px solid #e2e8f0;
}

.styled-table tbody tr:nth-of-type(even) {
    background-color: #f7fafc;
}

.styled-table tbody tr:hover {
    background-color: #edf2f7;
}

.styled-table tbody tr:last-of-type {
    border-bottom: 2px solid #4a5568;
}

.styled-table td:first-child {
    font-weight: 500;
    color: #2d3748;
}

.styled-table td:last-child {
    color: #4a5568;
}

/* Knowledge Graph images styling */
.kg-figure {
    text-align: center;
    margin: 1.5rem 0.5rem;
  }
  .kg-figure-vertical {
    text-align: center;
    margin: 1.5rem 1.5rem;
  }
  .kg-figure img {
    display: block;
    margin: 0 auto;
    width: 50vw;
    max-width: 100vw;
    height: auto;
  }
    .kg-figure-vertical img {
    display: block;
    margin: 0 auto;
    max-width: 80vw;
    height: auto;
    max-height:500px;
  }

  /* On larger screens, limit to 80% of the viewport width */
  @media (max-width: 768px) {
    .kg-figure {text-align:center; margin: 0.1rem 0;}
    .kg-figure img { width: 90vw; max-width: 90vw; margin:0.1rem 0;  }
    .kg-figure-vertical {text-align:center; margin: 0.1rem 0;}
    .kg-figure-vertical img { width: 70vw; max-width: 70vw; margin:0.1rem 0;}
  }
  .kg-caption {
    margin-top: 0.5rem;
    font-size: 0.95rem;
    color: #333;
  }
  p { margin: 0.75rem 0; line-height: 1.5; color: #111; }

  /* Styles for the combination explainer boxes */
  .combination-explainer {
    display: grid;
    grid-template-columns: 1fr 1fr; /* Two columns */
    gap: 1.5rem;
    margin-top: 1rem;
  }

  .combo-box {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 16px;
  }

  .combo-box strong {
    font-size: 1.1rem;
    color: #333;
  }

  .combo-box ul {
    padding-left: 20px; /* Indent list */
    margin-top: 10px;
  }

  .combo-box li {
    margin-bottom: 5px; /* Spacing between list items */
  }

  /* Media query for smaller screens (mobile) */
  @media (max-width: 768px) {
    /* Stack grid items in a single column */
    .stats-figure-grid,
    .combination-explainer {
      grid-template-columns: 1fr; /* Single column */
      gap: 1rem;
    }
  }

/* Overview page flip-cards */

  .flip-card-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 columns for wider view */
    gap: 1.2rem;
    padding: 1rem;
  }
  
  .flip-card {
    background-color: transparent;
    width: 100%;
    perspective: 1000px;
  }
  
  
  .flip-card-inner {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    transition: transform 0.6s;
    transform-style: preserve-3d;
  }
  
  .flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
  }
  
  .flip-card-front,
  .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 10px;
    overflow: hidden;
  }
  
  .flip-card-front img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .flip-card-back {
    background-color: rgb(168, 167, 167);
    color: white;
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 1rem;
    box-sizing: border-box;
    font-size: 0.85rem;
    overflow-y: auto;
    height: 100%;
    max-height: 100%;
    overflow-y: auto;
    box-sizing: border-box;
    padding: 1rem;
  
  }
  
  .flip-card-back ul {
    list-style-position: inside;
    padding-left: 0;
    margin: 0 auto;
    text-align: center;
  }
  
  
@media (max-width: 768px) {
  .flip-card-container {
    grid-template-columns: repeat(2, 1fr);
  }
  .flip-card-back {
    font-size: 0.8rem;
    padding: 0.5rem;
  }
  .flip-card-back h3 {
    font-size: 0.75rem;
  }
}

@media (max-width: 576px) {
  .flip-card-container {
    grid-template-columns: repeat(1, 1fr);
  }
  .flip-card-back {
    font-size: 0.8rem;
    padding: 0.5rem;
  }
  .flip-card-back h3 {
    font-size: 0.75rem;
  }
}