/* Footer Styles (moved from inline in index.html) */
        .footer-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            max-width: 900px;
            margin: 0 auto;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 1rem 1rem 1.5rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            font-size: 0.85rem;
            display: flex;
            gap: 1.5rem;
            margin: 0;
        }
        .footer-link {
            color: var(--text-muted, #666);
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-link:hover {
            color: #667eea;
        }
        .footer-spacer {
            display: none;
        }
        .footer-copyright {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-muted, #666);
            font-size: 0.8rem;
            margin: 0;
            white-space: nowrap;
        }
        .footer-site {
            color: var(--text-muted, #666);
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-site:hover {
            color: #667eea;
        }
        .footer-social {
            display: inline-flex;
            gap: 0.5rem;
            align-items: center;
        }
        .social-gitlab {
            color: var(--text-muted, #666);
            transition: color 0.3s;
            display: inline-flex;
        }
        .social-gitlab:hover {
            color: #FC6D26;
        }
        .social-linkedin {
            color: var(--text-muted, #666);
            transition: color 0.3s;
            display: inline-flex;
        }
        .social-linkedin:hover {
            color: #0A66C2;
        }
        /* Search Autocomplete Styles (moved from index.html) */
        .search-container {
            position: relative;
        }

        .autocomplete-results {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--card-bg, #ffffff);
            border: 1px solid rgba(0,0,0,0.1);
            border-radius: 0 0 12px 12px;
            max-height: 300px;
            overflow-y: auto;
            z-index: 1000;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            display: none;
            margin-top: 4px;
        }

        .autocomplete-results.visible {
            display: block;
        }

        .autocomplete-item {
            padding: 12px 16px;
            cursor: pointer;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            color: var(--text-primary, #333);
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.2s;
        }

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

        .autocomplete-item:hover {
            background-color: rgba(0,0,0,0.05);
        }

        .autocomplete-item .match-tag {
            font-size: 0.75rem;
            color: var(--text-muted, #666);
            background: rgba(0,0,0,0.05);
            padding: 2px 8px;
            border-radius: 12px;
        }
        /* ============================================
           MAIN LANDING PAGE STYLES
           ============================================ */

        /* ============================================
           RESET & BASE STYLES
           ============================================ */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        /* ============================================
           CSS VARIABLES - COLOR PALETTE & THEMES
           ============================================ */
        :root {
            /* Raw Color Palette */
            --color-primary: #6366f1;
            --color-primary-dark: #4f46e5;
            --color-secondary: #8b5cf6;
            --color-accent: #ec4899;
            
            --color-bg-light: #f8fafc;
            --color-bg-dark: #0f172a;
            
            --color-card-light: #ffffff;
            --color-card-dark: #1e293b;
            
            --color-text-light: #0f172a;
            --color-text-dark: #f1f5f9;
            
            --color-muted-light: #64748b;
            --color-muted-dark: #94a3b8;
            
            --color-border-light: #e2e8f0;
            --color-border-dark: #334155;

            /* Default Theme (Light) - Semantic Names */
            --bg-body: var(--color-bg-light);
            --bg-surface: var(--color-card-light);
            --text-main: var(--color-text-light);
            --text-muted: var(--color-muted-light);
            --border-color: var(--color-border-light);
            --primary: var(--color-primary);
            --secondary: var(--color-secondary);
            --shadow-color: rgba(0, 0, 0, 0.1);

            /* Compatibility mappings for shared-styles.css */
            --card-bg: var(--bg-surface);
            --header-color: var(--text-main);
            --card-text: var(--text-main);
            --subheader-color: var(--primary);
            --code-bg: var(--bg-body);
            --code-text: var(--text-main);
            --badge-bg: var(--primary);
            --badge-text: #ffffff;
            --section-text: var(--text-main);
            --section-bg: var(--bg-surface);
        }

        /* ============================================
           DARK MODE THEME OVERRIDES
           ============================================ */
        body.dark-mode {
            --bg-body: var(--color-bg-dark);
            --bg-surface: var(--color-card-dark);
            --text-main: var(--color-text-dark);
            --text-muted: var(--color-muted-dark);
            --border-color: var(--color-border-dark);
            --shadow-color: rgba(0, 0, 0, 0.4);
        }

        /* ============================================
           TYPOGRAPHY & BASE BODY
           ============================================ */
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            min-height: 100vh;
            transition: background 0.3s ease, color 0.3s ease;
        }

        /* ============================================
           COMPONENTS - Header & Navigation
           ============================================ */
        header {
            background: var(--bg-surface);
            border-bottom: 1px solid var(--border-color);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
            /* Use slightly transparent bg for blur effect if desired, specifically: */
            background: color-mix(in srgb, var(--bg-surface), transparent 10%);
            box-shadow: 0 1px 3px var(--shadow-color);
            transition: border-color 0.3s ease;
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--text-main);
            flex-shrink: 0;
        }

        .logo-icon {
            font-size: 2em;
        }

        .logo-text {
            font-size: 1.5em;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
        }

        .logo-wrapper {
            display: flex;
            flex-direction: column;
            margin-left: 10px;
        }

        .logo-subtitle {
            font-family: monospace;
            font-size: 11px;
            color: var(--text-muted);
        }

        .header-controls {
            display: flex;
            align-items: center;
            gap: 15px;
            flex: 1;
            justify-content: flex-end;
            max-width: 800px;
        }

        .search-container {
            flex: 1;
            max-width: 400px;
            position: relative;
        }

        .search-box {
            width: 100%;
            padding: 10px 40px 10px 40px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background: var(--bg-surface);
            color: var(--text-main);
            font-size: 15px;
            transition: all 0.3s ease;
        }

        .search-box::placeholder {
            color: var(--text-muted);
        }

        .search-box:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
        }

        .search-icon {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 16px;
            pointer-events: none;
        }

        .clear-search {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--text-muted);
            font-size: 18px;
            cursor: pointer;
            display: none;
            padding: 4px;
            line-height: 1;
        }

        .clear-search:hover {
            color: var(--text-main);
        }

        .theme-toggle {
            display: flex;
            align-items: center;
            gap: 0px;
            background: var(--bg-body); /* Uses body bg so it contrasts slightly with header if different */
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1.1em;
            flex-shrink: 0;
            color: var(--text-main);
        }

        .theme-toggle:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px var(--shadow-color);
            border-color: var(--primary);
        }

        /* ============================================
           COMPONENTS - Hero Section
           ============================================ */
        .hero {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px 20px;
            text-align: center;
        }

        .hero h1 {
            font-size: 2em;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .hero p {
            font-size: 1.1em;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 40px;
        }

        .hero-subtitle {
            font-size: 0.90rem;
        }

        .stats {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 10px;
            flex-wrap: wrap;
        }

        .stat {
            text-align: center;
        }

        .stat-number {
            font-size: 1.5em;
            font-weight: 700;
            color: var(--primary);
        }

        .stat-label {
            font-size: 0.9em;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ============================================
           LAYOUT - Container & Sidebar
           ============================================ */
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px 40px;
            display: flex;
            gap: 30px;
            position: relative;
        }

        /* Sticky Sidebar Navigation */
        .sidebar-nav {
            width: 250px;
            flex-shrink: 0;
            position: sticky;
            top: 80px;
            height: fit-content;
            background: var(--bg-surface);
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 4px 12px var(--shadow-color);
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .sidebar-nav.collapsed {
            transform: translateX(-100%);
            opacity: 0;
            pointer-events: none;
        }

        .sidebar-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--border-color);
        }

        .sidebar-header h3 {
            font-size: 1.2em;
            font-weight: 600;
            color: var(--text-main);
            margin: 0;
        }

        .sidebar-toggle {
            background: none;
            border: none;
            font-size: 1.2em;
            cursor: pointer;
            color: var(--text-muted);
            padding: 5px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }

        .sidebar-toggle:hover {
            background: var(--border-color);
            color: var(--text-main);
        }

        .sidebar-menu {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .sidebar-section {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .sidebar-category {
            font-size: 0.85em;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 5px;
        }

        .sidebar-link {
            display: block;
            padding: 8px 12px;
            color: var(--text-main);
            text-decoration: none;
            border-radius: 6px;
            font-size: 0.95em;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .sidebar-link:hover {
            background: var(--primary);
            color: white;
            transform: translateX(5px);
        }

        .sidebar-link.active {
            background: var(--primary);
            color: white;
            font-weight: 500;
        }

        .sidebar-link.disabled {
            color: var(--text-muted);
            cursor: not-allowed;
            opacity: 0.6;
        }

        .sidebar-link.disabled:hover {
            background: none;
            transform: none;
        }

        /* ============================================
           COMPONENTS - Main Content Area
           ============================================ */
        .main-content {
            flex: 1;
            min-width: 0;
        }

        .section-title {
            font-size: 2em;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
            color: var(--text-main);
        }

        .search-results-info {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.9em;
            margin-bottom: 20px;
            display: none;
        }

        .search-results-info.visible {
            display: block;
        }

        .highlight {
            background-color: #fef08a;
            color: #854d0e;
            padding: 2px 4px;
            border-radius: 3px;
            font-weight: 600;
        }

        /* Adjust highlight for dark mode specific contrast */
        body.dark-mode .highlight {
            background-color: #854d0e;
            color: #fef08a;
        }

        /* ============================================
           COMPONENTS - Cheatsheet Cards Grid
           ============================================ */
        .cheatsheets-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 10px;
            margin-bottom: 60px;
        }

        .cheatsheet-card {
            background: var(--bg-surface);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 20px;
            text-decoration: none;
            color: var(--text-main);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .cheatsheet-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .cheatsheet-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px var(--shadow-color);
        }

        .cheatsheet-card:hover::before {
            transform: scaleX(1);
        }

        .cheatsheet-card.hidden {
            display: none;
        }

        /* Update .card-icon to handle images correctly - Scoped to landing page cards */
        .cheatsheet-card .card-icon {
            font-size: 2em;
            display: flex;
            align-items: center;
            height: 1.2em; /* Keeps the height consistent with emojis */
            margin-right: 12px;
            flex-shrink: 0;
        }

        /* Ensure the image scales to match the emoji size */
        .cheatsheet-card .card-icon img {
            height: 0.8em; /* Slightly smaller than 1em to visually match emoji weight */
            width: auto;
        }

        #machine-learning .card-icon {
            overflow: hidden;
        }

        #machine-learning .card-icon-img {
            filter: drop-shadow(0 100px 0 #4c0808);
            transform: translateY(-100px);
        }

        .cheatsheet-card .card-title {
            font-size: 1.5em;
            font-weight: 700;
            margin: 0;
            flex: 1;
        }

        .cheatsheet-card .card-header {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }

        .cheatsheet-card .card-description {
            color: var(--text-muted);
            line-height: 1.2;
            margin-bottom: 20px;
        }

        .cheatsheet-card .card-meta {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .cheatsheet-card .card-tag {
            background: var(--bg-body);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 0.85em;
            font-weight: 600;
        }

        .cheatsheet-card .card-status {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 0.85em;
            color: var(--text-muted);
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
        }

        .status-dot.coming-soon {
            background: #eab308;
        }

        .coming-soon-card {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .coming-soon-card:hover {
            transform: none;
        }

        .add-card {
            border: 2px dashed var(--border-color);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 280px;
            cursor: pointer;
            background: transparent; /* Makes it blend with body */
        }

        .add-card:hover {
            border-color: var(--primary);
            background: rgba(99, 102, 241, 0.05);
        }

        .add-icon {
            font-size: 3em;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .add-text {
            color: var(--text-muted);
            font-weight: 600;
        }

        .no-results {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            grid-column: 1 / -1;
        }

        .no-results-icon {
            font-size: 4em;
            margin-bottom: 20px;
            opacity: 0.5;
        }

        .no-results h3 {
            font-size: 1.5em;
            margin-bottom: 10px;
        }

        .no-results p {
            font-size: 1.1em;
        }

        /* ============================================
           COMPONENTS - Footer
           ============================================ */
        footer {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-color);
            padding: 40px 20px;
            margin-top: 80px;
            transition: border-color 0.3s ease;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }

        .footer-section h3 {
            font-size: 1.2em;
            margin-bottom: 15px;
            color: var(--primary);
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section ul li {
            margin-bottom: 8px;
        }

        .footer-section a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-section a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 40px auto 0;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            text-align: center;
            color: var(--text-muted);
        }

        /* ============================================
           RESPONSIVE DESIGN - Tablet & Mobile
           ============================================ */
        @media (max-width: 1024px) {
            .sidebar-nav {
                position: fixed;
                left: 0;
                top: 70px;
                height: calc(100vh - 70px);
                z-index: 1000;
                transform: translateX(-100%);
                box-shadow: 4px 0 12px var(--shadow-color);
            }

            .sidebar-nav.active {
                transform: translateX(0);
            }

            .container {
                flex-direction: column;
            }

            .main-content {
                width: 100%;
            }
        }

        @media (max-width: 768px) {
            .hero h1 { font-size: 2em; }
            .hero p { font-size: 1.1em; }
            .stats { gap: 20px; }
            .cheatsheets-grid { grid-template-columns: 1fr; }

            /* Mobile header layout - Logo first, then search, then theme toggle */
            .header-container {
                flex-wrap: wrap;
                gap: 10px;
            }

            .logo {
                order: 1;
                flex: 0 0 auto;
            }

            .header-controls {
                order: 2;
                flex: 1;
                justify-content: flex-end;
                max-width: none;
                gap: 10px;
            }

            .search-container {
                flex: 1;
                max-width: none;
                min-width: 120px;
            }

            .theme-toggle {
                order: 3;
                flex-shrink: 0;
            }

            .sidebar-nav {
                width: 80%;
                max-width: 300px;
            }
        }

        /* ============================================
           ANIMATIONS
           ============================================ */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .cheatsheet-card { animation: fadeInUp 0.6s ease-out; }
        .cheatsheet-card:nth-child(1) { animation-delay: 0.1s; }
        .cheatsheet-card:nth-child(2) { animation-delay: 0.2s; }
        .cheatsheet-card:nth-child(3) { animation-delay: 0.3s; }
        .cheatsheet-card:nth-child(4) { animation-delay: 0.4s; }
        .cheatsheet-card:nth-child(5) { animation-delay: 0.5s; }
        .cheatsheet-card:nth-child(6) { animation-delay: 0.6s; }

        /* ============================================
           MODAL STYLES
           ============================================ */
        .modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            overflow: auto;
            background-color: rgba(0, 0, 0, 0.7);
            -webkit-backdrop-filter: blur(5px);
            backdrop-filter: blur(5px);
            animation: fadeIn 0.3s ease;
        }

        .modal.show {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .modal-content {
            background-color: var(--bg-surface);
            margin: auto;
            padding: 30px;
            border-radius: 16px;
            max-width: 700px;
            width: 90%;
            max-height: 85vh;
            overflow-y: auto;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            animation: slideUp 0.4s ease;
            position: relative;
        }

        .modal-content h2 {
            color: var(--text-main);
            margin-bottom: 25px;
            font-size: 2em;
            border-bottom: 3px solid var(--primary);
            padding-bottom: 15px;
        }

        .modal-close {
            position: absolute;
            right: 20px;
            top: 20px;
            font-size: 32px;
            font-weight: bold;
            color: var(--text-muted);
            cursor: pointer;
            transition: all 0.3s ease;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }

        .modal-close:hover {
            color: var(--primary);
            background: var(--border-color);
            transform: rotate(90deg);
        }

        .about-content {
            color: var(--text-main);
        }

        .about-section {
            margin-bottom: 30px;
        }

        .about-section h3 {
            color: var(--primary);
            font-size: 1.4em;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .about-section p {
            color: var(--text-main);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .about-section ul,
        .about-section ol {
            color: var(--text-main);
            line-height: 1.8;
            margin-left: 25px;
            margin-bottom: 12px;
        }

        .about-section li {
            margin-bottom: 8px;
        }

        .about-section a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .about-section a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }

        .about-section .note {
            margin-top: 10px;
            color: var(--text-muted);
        }

        /* Modal Scrollbar */
        .modal-content::-webkit-scrollbar {
            width: 8px;
        }

        .modal-content::-webkit-scrollbar-track {
            background: var(--border-color);
            border-radius: 4px;
        }

        .modal-content::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 4px;
        }

        .modal-content::-webkit-scrollbar-thumb:hover {
            background: var(--secondary);
        }

        /* Modal Animations */
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Modal Responsive */
        @media (max-width: 768px) {
            .modal-content {
                width: 95%;
                padding: 25px 20px;
                max-height: 90vh;
            }

            .modal-content h2 {
                font-size: 1.6em;
                padding-right: 40px;
            }

            .about-section h3 {
                font-size: 1.2em;
            }
        }

        /* ============================================
           CHEATSHEET CONTENT STYLES (Expandable Cards)
           ============================================ */
        .section { margin-bottom: 40px; scroll-margin-top: 100px; }
        .section-header { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 1px solid var(--border-color); }
        .section-header .section-title { font-size: 1.8em; margin: 0; text-align: left; }

        .card { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: 12px; margin-bottom: 15px; overflow: hidden; transition: all 0.3s ease; }
        .card:hover { border-color: var(--primary); box-shadow: 0 4px 12px var(--shadow-color); }
        
        /* Specific overrides for expandable cards */
        .card .card-header { padding: 15px 20px; display: flex; justify-content: space-between; align-items: center; cursor: pointer; background: var(--bg-surface); -webkit-user-select: none; user-select: none; margin-bottom: 0; }
        .card .card-title { font-size: 1.1em; font-weight: 600; color: var(--text-main); margin: 0; }
        .card .card-icon { transition: transform 0.3s ease; color: var(--text-muted); margin-right: 0; height: auto; font-size: 1em; }
        .card.expanded .card-icon { transform: rotate(180deg); }
        
        .card-content { display: none; padding: 0 20px 20px; border-top: 1px solid var(--border-color); animation: slideDown 0.3s ease; }
        .card.expanded .card-content { display: block; }
        
        /* Content Typography */
        .card-content h4 { margin: 20px 0 10px; color: var(--primary); font-size: 1em; text-transform: uppercase; letter-spacing: 0.5px; }
        .card-content p { margin-bottom: 15px; line-height: 1.6; color: var(--text-main); }
        .card-content ul { margin-bottom: 15px; padding-left: 20px; color: var(--text-main); line-height: 1.6; }
        .card-content li { margin-bottom: 5px; }
        .card-content pre { background: var(--bg-body); padding: 15px; border-radius: 8px; overflow-x: auto; margin-bottom: 15px; border: 1px solid var(--border-color); }
        .card-content code { font-family: 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace; font-size: 0.8em; color: var(--text-main); }
        
        @keyframes slideDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
        
        /* Table styles */
        table { width: 100%; border-collapse: collapse; margin-bottom: 20px; }
        th, td { padding: 12px; text-align: left; border-bottom: 1px solid var(--border-color); }
        th { color: var(--text-muted); font-weight: 600; font-size: 0.9em; }
        td { color: var(--text-main); font-size: 0.95em; }