:root {
            --cream: #F5F1E8;
            --red: #D32F2F;
            --dark-blue: #1A237E;
            --gold: #FFC107;
            --charcoal: #2C2C2C;
            --paper: #FDFBF7;
            
            /* Matrix Mode Colors - Optimized for Night Viewing */
            --matrix-black: #0d0d0d;
            --matrix-card: #1a1a1a;
            --matrix-green: #00cc33;
            --matrix-green-dim: #009922;
            --matrix-green-bright: #00ff44;
            --matrix-text: #d0d0d0;
            --matrix-text-dim: #888888;
            --matrix-border: #1a3a1a;
            
            /* Modern Design Tokens */
            --border-radius: 12px;
            --border-radius-sm: 6px;
            --border-radius-lg: 16px;
            
            --shadow-sm: 0 1px 3px rgba(44, 44, 44, 0.12), 0 1px 2px rgba(44, 44, 44, 0.08);
            --shadow-md: 0 4px 6px rgba(44, 44, 44, 0.1), 0 2px 4px rgba(44, 44, 44, 0.06);
            --shadow-lg: 0 10px 15px rgba(44, 44, 44, 0.1), 0 4px 6px rgba(44, 44, 44, 0.05);
            --shadow-xl: 0 20px 25px rgba(44, 44, 44, 0.15), 0 10px 10px rgba(44, 44, 44, 0.08);
            
            --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'IBM Plex Mono', monospace;
            background: linear-gradient(135deg, var(--cream) 0%, #E8E4D9 100%);
            color: var(--charcoal);
            min-height: 100vh;
            padding: 0;
            padding-top: 80px;
            position: relative;
            overflow-x: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            transition: background 0.3s ease, color 0.3s ease;
            scroll-behavior: smooth;
        }

        /* Matrix Mode / Dark Mode */
        body.dark-mode {
            background: var(--matrix-black);
            color: var(--matrix-text);
        }

        /* Scanline effect for Matrix mode */
        body.dark-mode::after {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: repeating-linear-gradient(
                0deg,
                rgba(0, 255, 65, 0.03) 0px,
                transparent 1px,
                transparent 2px,
                rgba(0, 255, 65, 0.03) 3px
            );
            pointer-events: none;
            z-index: 9999;
            animation: scanlines 8s linear infinite;
        }

        @keyframes scanlines {
            0% { transform: translateY(0); }
            100% { transform: translateY(10px); }
        }

        /* Cyrillic Rain Effect (Matrix Mode only) */
        .cyrillic-rain {
            position: fixed;
            top: -100px;
            font-family: 'IBM Plex Mono', monospace;
            font-size: 1.3rem;
            color: var(--matrix-green);
            pointer-events: none;
            z-index: 9998;
            line-height: 1.4;
            letter-spacing: 2px;
            animation: rainFall 2.5s linear forwards;
            filter: blur(0px);
        }

        .cyrillic-rain::after {
            content: attr(data-trail);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            color: var(--matrix-green-dim);
            opacity: 0.3;
            white-space: pre-line;
        }

        @keyframes rainFall {
            0% {
                opacity: 0;
                transform: translateY(0);
                filter: blur(0px);
            }
            3% {
                opacity: 1;
            }
            97% {
                opacity: 0.9;
            }
            100% {
                opacity: 0;
                transform: translateY(100vh);
                filter: blur(1px);
            }
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: var(--dark-blue);
            border-bottom: 4px solid var(--charcoal);
            z-index: 1000;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            transition: background 0.3s ease, border-color 0.3s ease;
        }

        body.dark-mode nav {
            background: var(--matrix-black);
            border-bottom: 4px solid var(--matrix-green);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .nav-logo {
            font-family: 'Bebas Neue', sans-serif;
            font-size: 2rem;
            letter-spacing: 6px;
            color: white;
            text-decoration: none;
            transition: color 0.3s ease;
            display: inline-block;
        }

        body.dark-mode .nav-logo {
            color: var(--matrix-green);
        }

        .nav-logo .letter-l,
        h1 .letter-l {
            color: var(--gold);
            position: relative;
            display: inline-block;
            margin: 0 3px;
            font-size: 1.1em;
            cursor: pointer;
        }

        body.dark-mode .nav-logo .letter-l,
        body.dark-mode h1 .letter-l {
            color: var(--matrix-green-bright);
        }

        /* Confetti container - hidden by default */
        .letter-l .confetti-burst {
            position: fixed;
            pointer-events: none;
            z-index: 10000;
            display: none;
        }

        /* Show confetti on hover or when clicked */
        .letter-l:hover .confetti-burst,
        .letter-l.burst-active .confetti-burst {
            display: block;
        }

        /* Individual confetti piece animation */
        .letter-l .conf {
            position: fixed;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            pointer-events: none;
        }

        /* Confetti falling animation - just like in-game! */
        @keyframes confettiFall {
            0% {
                transform: translateY(0) rotate(0deg);
                opacity: 1;
            }
            100% {
                transform: translateY(150px) rotate(360deg);
                opacity: 0;
            }
        }

        .letter-l.burst-active .conf {
            animation: confettiFall 1.2s ease-out forwards;
        }

        /* Stagger the confetti timing like in-game */
        .letter-l.burst-active .conf:nth-child(1) { animation-delay: 0s; }
        .letter-l.burst-active .conf:nth-child(2) { animation-delay: 0.05s; }
        .letter-l.burst-active .conf:nth-child(3) { animation-delay: 0.1s; }
        .letter-l.burst-active .conf:nth-child(4) { animation-delay: 0.05s; }
        .letter-l.burst-active .conf:nth-child(5) { animation-delay: 0.15s; }
        .letter-l.burst-active .conf:nth-child(6) { animation-delay: 0.08s; }
        .letter-l.burst-active .conf:nth-child(7) { animation-delay: 0.12s; }
        .letter-l.burst-active .conf:nth-child(8) { animation-delay: 0.03s; }
        .letter-l.burst-active .conf:nth-child(9) { animation-delay: 0.18s; }
        .letter-l.burst-active .conf:nth-child(10) { animation-delay: 0.1s; }
        .letter-l.burst-active .conf:nth-child(11) { animation-delay: 0.06s; }
        .letter-l.burst-active .conf:nth-child(12) { animation-delay: 0.14s; }
        .letter-l.burst-active .conf:nth-child(13) { animation-delay: 0.09s; }
        .letter-l.burst-active .conf:nth-child(14) { animation-delay: 0.11s; }
        .letter-l.burst-active .conf:nth-child(15) { animation-delay: 0.04s; }

        .nav-links {
            display: flex;
            gap: 0;
            list-style: none;
        }

        .nav-links a {
            display: block;
            padding: 25px 18px;
            color: white;
            text-decoration: none;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            font-size: 0.85rem;
            transition: all 0.3s;
            border-right: 2px solid rgba(255, 255, 255, 0.1);
        }

        body.dark-mode .nav-links a {
            color: var(--matrix-text);
            border-right: 2px solid var(--matrix-border);
        }

        .nav-links li:last-child a {
            border-right: none;
        }

        .nav-links a:hover,
        .nav-links a.active {
            background: var(--red);
            color: white;
        }

        body.dark-mode .nav-links a:hover,
        body.dark-mode .nav-links a.active {
            background: var(--matrix-green);
            color: var(--matrix-black);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 10px;
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }

            .nav-links {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--dark-blue);
                flex-direction: column;
                gap: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s, background 0.3s;
            }

            body.dark-mode .nav-links {
                background: var(--matrix-card);
                border-top: 2px solid var(--matrix-green);
            }

            .nav-links.active {
                max-height: 400px;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links a {
                border-right: none;
                border-bottom: 2px solid rgba(255, 255, 255, 0.1);
                padding: 16px 20px;
                min-height: 54px;
                display: flex;
                align-items: center;
            }

            .nav-links li:last-child a {
                border-bottom: none;
                padding-bottom: 16px;
            }
        }

        /* Main content centered layout (no sidebars) */
        .main-content {
            max-width: 1000px;
            width: 100%;
            margin: 0 auto;
            padding: 20px;
        }

        /* Share buttons */
        .share-section {
            margin: 40px 0 30px 0;
            padding: 25px 0;
            border-top: 2px solid #e0e0e0;
            border-bottom: 2px solid #e0e0e0;
            text-align: center;
        }

        body.dark-mode .share-section {
            border-top-color: var(--matrix-border);
            border-bottom-color: var(--matrix-border);
        }

        .share-section p {
            margin-bottom: 15px;
            font-size: 0.95rem;
            color: #666;
        }

        body.dark-mode .share-section p {
            color: #888;
        }

        .share-buttons {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .share-btn {
            padding: 10px 18px;
            background: var(--paper);
            border: 2px solid var(--charcoal);
            border-radius: var(--border-radius);
            color: var(--charcoal);
            font-family: 'Roboto', sans-serif;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            text-decoration: none;
        }

        .share-btn:hover {
            background: var(--charcoal);
            color: var(--paper);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        body.dark-mode .share-btn {
            background: var(--dark-bg);
            border-color: var(--matrix-green);
            color: var(--matrix-green);
        }

        body.dark-mode .share-btn:hover {
            background: var(--matrix-green);
            color: var(--dark-bg);
        }

        .share-btn.copied {
            background: #28a745;
            color: white;
            border-color: #28a745;
        }

        body.dark-mode .share-btn.copied {
            background: var(--matrix-green);
            color: var(--dark-bg);
            border-color: var(--matrix-green);
        }

        /* Decorative background pattern */
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0.03;
            background-image: 
                repeating-linear-gradient(45deg, transparent, transparent 35px, var(--charcoal) 35px, var(--charcoal) 36px),
                repeating-linear-gradient(-45deg, transparent, transparent 35px, var(--charcoal) 35px, var(--charcoal) 36px);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            width: 100%;
            max-width: 100%; /* Prevent overflow */
            position: relative;
            z-index: 1;
            overflow-x: hidden; /* Prevent horizontal scroll from wide content */
        }

        /* Page content styles */
        .page-content {
            display: none;
        }

        .page-content.active {
            display: block;
        }

        header {
            text-align: center;
            margin-bottom: 16px;
            animation: slideDown 0.6s ease-out;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        h1 {
            font-family: 'Bebas Neue', sans-serif;
            font-size: 3.5rem;
            letter-spacing: 10px;
            color: var(--dark-blue);
            text-transform: uppercase;
            margin-bottom: 5px;
            line-height: 1;
            transition: color 0.3s ease;
            display: inline-block;
        }

        body.dark-mode h1 {
            color: var(--matrix-green);
        }

        .subtitle {
            font-family: 'Merriweather', serif;
            font-size: 0.9rem;
            color: var(--red);
            font-weight: 300;
            font-style: italic;
            letter-spacing: 1.5px;
            transition: color 0.3s ease;
        }

        body.dark-mode .subtitle {
            color: var(--matrix-green-dim);
        }

        .site-description {
            max-width: 600px;
            margin: 12px auto 18px auto;
            font-size: 0.9rem;
            line-height: 1.4;
            color: #555;
            text-align: center;
            font-family: 'Roboto', sans-serif;
        }

        body.dark-mode .site-description {
            color: #999;
        }

        .card {
            background: var(--paper);
            border: 2px solid var(--charcoal);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-md);
            padding: 24px;
            margin-bottom: 16px;
            position: relative;
            animation: fadeIn 0.6s ease-out;
            animation-delay: 0.2s;
            animation-fill-mode: backwards;
            transition: all var(--transition-base);
            max-width: 100%; /* Prevent cards from overflowing */
            box-sizing: border-box; /* Include padding in width calculation */
        }

        @media (hover: hover) {
            .card:hover {
                transform: translateY(-2px);
                box-shadow: var(--shadow-lg);
            }

            body.dark-mode .card:hover {
                box-shadow: var(--shadow-lg);
            }
        }

        body.dark-mode .card {
            background: var(--matrix-card);
            border: 2px solid var(--matrix-green);
            box-shadow: var(--shadow-md);
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .card::before {
            content: '';
            position: absolute;
            top: -4px;
            left: -4px;
            right: -4px;
            bottom: -4px;
            background: linear-gradient(45deg, var(--red), var(--gold), var(--dark-blue));
            z-index: -1;
            opacity: 0;
            transition: opacity 0.3s;
        }

        .card:hover::before {
            opacity: 0.1;
        }

        body.dark-mode .card:hover::before {
            opacity: 0;
        }

        h2 {
            font-family: 'Bebas Neue', sans-serif;
            font-size: 2rem;
            letter-spacing: 3px;
            color: var(--dark-blue);
            margin-bottom: 15px;
            border-bottom: 3px solid var(--red);
            padding-bottom: 8px;
            text-transform: uppercase;
            transition: color 0.3s ease, border-color 0.3s ease, text-shadow 0.3s ease;
        }

        body.dark-mode h2 {
            color: var(--matrix-green);
            border-bottom: 3px solid var(--matrix-green);
        }

        h3 {
            font-family: 'Bebas Neue', sans-serif;
            font-size: 1.5rem;
            letter-spacing: 2px;
            color: var(--dark-blue);
            margin-top: 0;
            margin-bottom: 5px;
            transition: color 0.3s ease;
        }

        body.dark-mode h3 {
            color: var(--matrix-green);
        }

        .content-text {
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .content-text a {
            color: var(--red);
            text-decoration: none;
            border-bottom: 2px solid var(--red);
            transition: all 0.2s;
        }

        body.dark-mode .content-text a {
            color: var(--matrix-green);
            border-bottom: 2px solid var(--matrix-green);
        }

        .reference-link {
            color: var(--red);
            font-weight: 600;
            text-decoration: none;
        }

        .reference-link:hover {
            opacity: 0.8;
        }

        body.dark-mode .reference-link {
            color: var(--matrix-text);
            font-weight: 600;
        }

        body.dark-mode .reference-link:hover {
            color: var(--matrix-green);
        }

        .content-text a:hover {
            color: var(--dark-blue);
            border-bottom-color: var(--dark-blue);
        }

        body.dark-mode .content-text a:hover {
            color: var(--matrix-green-bright);
            border-bottom-color: var(--matrix-green-bright);
        }

        /* Articles Styles */
        .articles-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        
        .article-category {
            margin-top: 40px;
        }
        
        .article-category:first-child {
            margin-top: 0;
        }
        
        .article-category-header {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
            padding: 12px 20px;
            background: var(--cream);
            border-left: 4px solid var(--red);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        body.dark-mode .article-category-header {
            color: var(--matrix-text);
            background: rgba(0, 255, 0, 0.05);
            border-left-color: var(--matrix-green);
        }
        
        .article-category-header .emoji {
            font-size: 1.3rem;
            line-height: 1;
        }
        
        .article-category-desc {
            font-size: 0.9rem;
            color: #666;
            padding: 0 20px 12px 20px;
            font-style: italic;
        }
        
        body.dark-mode .article-category-desc {
            color: rgba(0, 255, 0, 0.6);
        }

        .article-item {
            padding: 16px 20px;
            border-bottom: 1px solid #ddd;
            background: transparent;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: baseline;
            gap: 12px;
        }

        .article-item:first-child {
            border-top: 1px solid #ddd;
        }

        body.dark-mode .article-item {
            border-bottom-color: var(--matrix-border);
        }

        body.dark-mode .article-item:first-child {
            border-top-color: var(--matrix-border);
        }

        .article-item:hover {
            background: var(--cream);
            padding-left: 24px;
        }

        body.dark-mode .article-item:hover {
            background: rgba(0, 255, 65, 0.05);
        }

        .article-item::before {
            content: "→";
            color: var(--red);
            font-weight: bold;
            font-size: 1.2rem;
            flex-shrink: 0;
            transition: transform 0.2s;
        }

        body.dark-mode .article-item::before {
            color: var(--matrix-green);
        }

        .article-item:hover::before {
            transform: translateX(3px);
        }

        .article-item-content {
            flex: 1;
        }

        .article-item h3 {
            color: var(--dark-blue);
            margin: 0 0 4px 0;
            font-size: 1.1rem;
            font-family: 'Bebas Neue', sans-serif;
            letter-spacing: 0.5px;
            font-weight: 600;
        }

        body.dark-mode .article-item h3 {
            color: var(--matrix-green);
        }

        .article-item p {
            margin: 0;
            color: #666;
            font-size: 0.85rem;
            line-height: 1.4;
        }

        body.dark-mode .article-item p {
            color: var(--matrix-text-dim);
        }

        .article-header {
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 3px solid var(--red);
            position: relative;
        }

        .article-header h2 {
            margin: 0;
            padding-right: 100px; /* Space for button */
        }

        .article-back-btn {
            position: absolute;
            top: -10px;
            right: 0;
            padding: 8px 16px;
            background: var(--dark-blue);
            color: white;
            border: none;
            border-radius: 4px;
            font-family: 'Bebas Neue', sans-serif;
            font-size: 0.95rem;
            letter-spacing: 1px;
            cursor: pointer;
            transition: all 0.2s;
            white-space: nowrap;
        }

        .article-back-btn:hover {
            background: var(--red);
            transform: translateX(-3px);
        }

        body.dark-mode .article-back-btn {
            background: var(--matrix-card);
            color: var(--matrix-green);
            border: 1px solid var(--matrix-green);
        }

        body.dark-mode .article-back-btn:hover {
            background: var(--matrix-green);
            color: var(--dark-blue);
            box-shadow: none;
        }

        body.dark-mode .article-header {
            border-bottom-color: var(--matrix-green);
        }

        /* Table of Contents styling */
        .article-toc {
            background: #f5f5f5;
            border-left: 4px solid var(--red);
            padding: 20px;
            margin-bottom: 30px;
            border-radius: 4px;
        }

        .article-toc h4 {
            margin-top: 0;
            color: var(--dark-blue);
            font-family: 'Bebas Neue', sans-serif;
            font-size: 1.3rem;
        }

        .article-toc ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .article-toc li {
            margin-bottom: 8px;
        }

        .article-toc a {
            color: var(--dark-blue);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.2s;
        }

        .article-toc a:hover {
            color: var(--red);
        }

        /* Matrix Mode TOC */
        body.dark-mode .article-toc {
            background: rgba(0, 255, 65, 0.05);
            border-left: 4px solid var(--matrix-green);
            box-shadow: none;
        }

        body.dark-mode .article-toc h4 {
            color: var(--matrix-green);
        }

        body.dark-mode .article-toc a {
            color: var(--matrix-green);
        }

        body.dark-mode .article-toc a:hover {
            color: var(--matrix-green-bright);
        }

        .article-content {
            margin-bottom: 40px;
            overflow-wrap: break-word; /* Break long words */
            word-wrap: break-word; /* Legacy support */
            max-width: 100%; /* Prevent overflow */
        }

        .article-content h3 {
            color: var(--dark-blue);
            font-family: 'Bebas Neue', sans-serif;
            font-size: 1.5rem;
            margin: 30px 0 15px 0;
            letter-spacing: 1px;
        }

        body.dark-mode .article-content h3 {
            color: var(--matrix-green);
        }

        .article-content ul, .article-content ol {
            margin: 15px 0 15px 30px;
            line-height: 1.8;
        }

        .article-content li {
            margin-bottom: 10px;
        }

        .article-navigation {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
            padding-top: 30px;
            border-top: 2px solid #e0e0e0;
            flex-wrap: wrap;
        }

        body.dark-mode .article-navigation {
            border-top-color: var(--matrix-border);
        }

        .article-navigation .btn {
            flex: 1 1 auto;
            min-width: 120px;
            text-align: center;
        }

        .article-navigation .btn:nth-child(2) {
            flex: 1 1 auto;
            max-width: none;
        }

        @media (max-width: 768px) {
            .article-navigation {
                flex-direction: column;
                align-items: stretch;
                gap: 10px;
            }

            .article-navigation .btn {
                width: 100%;
                min-width: unset;
                text-align: center;
            }
        }

        /* Articles Index */
        .article-list {
            list-style: none;
            padding: 0;
        }

        .article-list li {
            margin-bottom: 16px;
        }

        .article-list a {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--dark-blue);
            text-decoration: none;
            border-bottom: 2px dotted var(--dark-blue);
            transition: all var(--transition-base);
            display: inline-block;
        }

        body.dark-mode .article-list a {
            color: var(--matrix-green);
            border-bottom-color: var(--matrix-green);
        }

        .article-list a:hover {
            color: var(--red);
            border-bottom-style: solid;
            transform: translateX(4px);
        }

        body.dark-mode .article-list a:hover {
            color: var(--matrix-green-bright);
        }

        /* Article Content */
        .article-content h2 {
            font-family: 'Bebas Neue', sans-serif;
            font-size: 1.8rem;
            color: var(--dark-blue);
            margin: 30px 0 15px 0;
            letter-spacing: 2px;
        }

        body.dark-mode .article-content h2 {
            color: var(--matrix-green);
        }

        .article-content h3 {
            font-size: 1.3rem;
            color: var(--dark-blue);
            margin: 25px 0 12px 0;
            font-weight: 600;
        }

        body.dark-mode .article-content h3 {
            color: var(--matrix-green-dim);
        }

        .article-content p {
            margin-bottom: 18px;
            line-height: 1.8;
        }

        .article-content ul,
        .article-content ol {
            margin: 15px 0 20px 30px;
            line-height: 1.8;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        /* Article Navigation */
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 15px;
            margin-top: 40px;
            padding-top: 30px;
            border-top: 2px solid var(--charcoal);
        }

        body.dark-mode .article-nav {
            border-top-color: var(--matrix-green);
        }

        .article-nav .btn {
            flex: 1;
            max-width: 200px;
        }

        .article-nav .btn:disabled {
            opacity: 0.3;
            cursor: not-allowed;
        }

        /* Character Reference Guide */
        .char-reference {
            margin-bottom: 20px;
        }

        .selection-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
            flex-wrap: wrap;
            gap: 10px;
        }

        .selection-header h2 {
            margin: 0;
            flex: 1;
            min-width: 200px;
            font-size: 1.4rem;
        }

        .selection-controls {
            display: flex;
            gap: 8px;
        }

        .btn-control {
            font-size: 0.9rem;
            padding: 8px 16px;
            white-space: nowrap;
        }

        /* Two-column grid for character groups */
        #reference-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-bottom: 20px;
        }

        .reference-section {
            margin-bottom: 0;
            background: var(--cream);
            border: 2px solid var(--charcoal);
            border-radius: var(--border-radius);
            padding: 14px;
            cursor: pointer;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        body.dark-mode .reference-section {
            background: var(--matrix-card);
            border: 2px solid var(--matrix-border);
        }

        .reference-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: var(--red);
            transition: left var(--transition-base);
            z-index: 0;
        }

        body.dark-mode .reference-section::after {
            background: var(--matrix-green);
        }

        /* Hover effects - only on devices that support hover (desktop/trackpad) */
        @media (hover: hover) {
            .reference-section:hover::after {
                left: 0;
            }

            .reference-section:hover {
                transform: translateY(-4px);
                box-shadow: var(--shadow-md);
            }

            body.dark-mode .reference-section:hover {
                box-shadow: var(--shadow-md);
            }

            .reference-section:hover .section-title,
            .reference-section:hover .char-ref-item {
                color: white;
            }

            body.dark-mode .reference-section:hover .section-title,
            body.dark-mode .reference-section:hover .char-ref-item {
                color: var(--matrix-black);
            }

            /* Make the actual Cyrillic letters and roman text visible on green hover background */
            body.dark-mode .reference-section:hover .char-ref-cyrillic,
            body.dark-mode .reference-section:hover .char-ref-roman {
                color: var(--matrix-black) !important;
                position: relative;
                z-index: 1;
            }
        }

        .reference-section.selected {
            background: var(--red);
            border-color: var(--red);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        body.dark-mode .reference-section.selected {
            background: var(--matrix-green);
            border-color: var(--matrix-green-bright);
            box-shadow: var(--shadow-lg);
        }

        .reference-section.selected::after {
            left: 0;
        }

        .reference-section.selected .section-title {
            color: white;
        }

        body.dark-mode .reference-section.selected .section-title {
            color: var(--matrix-black);
        }

        .reference-section.selected .char-ref-item {
            color: white;
            border-color: rgba(255, 255, 255, 0.4);
        }

        body.dark-mode .reference-section.selected .char-ref-item {
            color: var(--matrix-black);
            border-color: rgba(10, 10, 10, 0.3);
        }

        .reference-section.selected .char-ref-cyrillic {
            color: white;
        }

        body.dark-mode .reference-section.selected .char-ref-cyrillic {
            color: var(--matrix-black);
        }

        .reference-section.selected .char-ref-roman {
            color: white;
        }

        body.dark-mode .reference-section.selected .char-ref-roman {
            color: var(--matrix-black);
        }

        .section-title {
            font-family: 'Bebas Neue', sans-serif;
            font-size: 1.1rem;
            letter-spacing: 2px;
            color: var(--dark-blue);
            margin-bottom: 8px;
            text-transform: uppercase;
            position: relative;
            z-index: 1;
            transition: color 0.3s;
        }

        body.dark-mode .section-title {
            color: var(--matrix-green);
        }

        .reference-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(52px, 1fr));
            gap: 5px;
            position: relative;
            z-index: 1;
        }

        .char-ref-item {
            background: transparent;
            border: 2px solid var(--charcoal);
            border-radius: var(--border-radius-sm);
            padding: 6px 4px;
            text-align: center;
            transition: all var(--transition-base);
            pointer-events: none;
        }

        body.dark-mode .char-ref-item {
            border: 2px solid var(--matrix-border);
        }

        .char-ref-cyrillic {
            font-size: 1.3rem;
            font-weight: bold;
            color: var(--dark-blue);
            display: block;
            margin-bottom: 2px;
            transition: color 0.3s;
        }

        body.dark-mode .char-ref-cyrillic {
            color: var(--matrix-green);
        }

        .char-ref-roman {
            font-size: 0.7rem;
            color: var(--charcoal);
            font-weight: 600;
            transition: color 0.3s;
        }

        body.dark-mode .char-ref-roman {
            color: var(--matrix-text-dim);
        }

        .start-btn {
            background: var(--dark-blue);
            color: white;
            border: none;
            padding: 14px 50px;
            font-family: 'Bebas Neue', sans-serif;
            font-size: 1.6rem;
            letter-spacing: 3px;
            cursor: pointer;
            width: 100%;
            transition: all 0.3s;
            text-transform: uppercase;
            box-shadow: 5px 5px 0 var(--charcoal);
            position: relative;
            overflow: hidden;
        }

        .start-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .start-btn:not(:disabled):hover {
            background: var(--red);
            transform: translateX(2px) translateY(-2px);
            box-shadow: 3px 7px 0 var(--charcoal);
        }

        .start-btn:not(:disabled):active {
            transform: translateX(5px) translateY(5px);
            box-shadow: 0 0 0 var(--charcoal);
        }

        body.dark-mode .start-btn {
            background: var(--matrix-black);
            color: var(--matrix-green);
            border: 4px solid var(--matrix-green);
            box-shadow: 5px 5px 0 var(--matrix-border);
        }

        body.dark-mode .start-btn:not(:disabled):hover {
            background: var(--matrix-green);
            color: var(--matrix-black);
            box-shadow: 3px 7px 0 var(--matrix-border);
        }

        #quiz-container {
            display: none;
        }

        #quiz-container.active {
            display: block;
        }

        .quiz-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            flex-wrap: wrap;
            gap: 10px;
        }

        .score {
            font-size: 1rem;
            font-weight: 600;
            padding: 8px 16px;
            background: var(--gold);
            border: 2px solid var(--charcoal);
            letter-spacing: 1px;
            transition: all 0.3s;
        }

        body.dark-mode .score {
            background: var(--matrix-card);
            border: 2px solid var(--matrix-green);
            color: var(--matrix-green);
        }

        .progress {
            font-size: 0.9rem;
            color: var(--dark-blue);
            font-weight: 600;
            transition: color 0.3s;
        }

        body.dark-mode .progress {
            color: var(--matrix-green);
        }

        .character-display {
            text-align: center;
            margin: 30px 0 20px 0;
            animation: scaleIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            position: relative;
        }

        @keyframes scaleIn {
            from {
                opacity: 0;
                transform: scale(0.5) rotate(-10deg);
            }
            to {
                opacity: 1;
                transform: scale(1) rotate(0deg);
            }
        }

        /* Audio pronunciation button */
        .audio-btn {
            position: absolute;
            right: 20%;
            top: 50%;
            transform: translateY(-50%);
            background: var(--dark-blue);
            color: white;
            border: none;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            font-size: 1.4rem;
            cursor: pointer;
            transition: all 0.2s;
            box-shadow: var(--shadow-sm);
        }

        .audio-btn:hover {
            background: var(--red);
            transform: translateY(-50%) scale(1.1);
            box-shadow: var(--shadow-md);
        }

        body.dark-mode .audio-btn {
            background: var(--matrix-green);
            color: var(--matrix-black);
        }

        body.dark-mode .audio-btn:hover {
            background: var(--matrix-green-bright);
        }

        .cyrillic-char {
            font-family: 'Bebas Neue', sans-serif;
            font-size: 9rem;
            color: var(--dark-blue);
            text-shadow: 5px 5px 0 var(--gold);
            line-height: 1;
            display: inline-block;
            animation: pulse 2s ease-in-out infinite;
            transition: color 0.3s ease, text-shadow 0.3s ease;
        }

        body.dark-mode .cyrillic-char {
            color: var(--matrix-green);
            text-shadow: 5px 5px 0 rgba(0, 0, 0, 0.5);
        }

        .cyrillic-char-lowercase {
            font-size: 6rem;
            color: var(--red);
            opacity: 0.8;
            margin-left: 15px;
            transition: color 0.3s ease, text-shadow 0.3s ease;
        }

        body.dark-mode .cyrillic-char-lowercase {
            color: var(--matrix-green-dim);
            text-shadow: none;
        }

        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        .input-section {
            text-align: center;
            margin-bottom: 20px;
        }

        .input-wrapper {
            display: flex;
            gap: 10px;
            justify-content: center;
            align-items: stretch;
            flex-wrap: wrap;
        }

        input[type="text"] {
            font-family: 'IBM Plex Mono', monospace;
            font-size: 1.8rem;
            padding: 16px 20px;
            border: 2px solid var(--charcoal);
            border-radius: var(--border-radius);
            background: white;
            flex: 1;
            max-width: 400px;
            min-width: 200px;
            text-align: center;
            letter-spacing: 2px;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }

        .btn-submit {
            font-size: 1.1rem;
            padding: 16px 26px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        body.dark-mode input[type="text"] {
            background: var(--matrix-black);
            border: 2px solid var(--matrix-green);
            color: var(--matrix-green);
            caret-color: var(--matrix-green);
        }

        input[type="text"]:focus {
            outline: none;
            border-color: var(--dark-blue);
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.15), var(--shadow-md);
            transform: translateY(-2px);
        }

        body.dark-mode input[type="text"]:focus {
            border-color: var(--matrix-green-bright);
            box-shadow: 0 0 0 2px var(--matrix-green);
        }

        .feedback {
            margin-top: 15px;
            font-size: 1.6rem;
            font-weight: 700;
            min-height: 40px;
            letter-spacing: 1.5px;
            animation: bounceIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
            text-transform: uppercase;
        }

        @keyframes bounceIn {
            0% {
                opacity: 0;
                transform: scale(0.3) translateY(-20px);
            }
            60% {
                transform: scale(1.15) translateY(0);
            }
            100% {
                opacity: 1;
                transform: scale(1);
            }
        }

        .feedback.correct {
            color: #2E7D32;
        }

        body.dark-mode .feedback.correct {
            color: var(--matrix-green);
        }

        /* Confetti for correct answers */
        .confetti {
            position: fixed;
            width: 10px;
            height: 10px;
            background: #FFC107;
            border-radius: 50%;
            z-index: 10000;
            pointer-events: none;
            animation: confettiFall 1.2s ease-out forwards;
        }

        @keyframes confettiFall {
            0% {
                opacity: 1;
                transform: translateY(0) rotate(0deg);
            }
            100% {
                opacity: 0;
                transform: translateY(300px) rotate(720deg);
            }
        }

        .feedback.incorrect {
            color: var(--red);
        }

        .action-buttons {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 20px;
        }

        .btn {
            font-family: 'Bebas Neue', sans-serif;
            font-size: 1.1rem;
            padding: 12px 24px;
            border: 2px solid var(--charcoal);
            border-radius: var(--border-radius-sm);
            background: var(--paper);
            cursor: pointer;
            transition: all var(--transition-base);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left var(--transition-slow);
        }

        @media (hover: hover) {
            .btn:hover::before {
                left: 100%;
            }

            .btn:hover {
                background: var(--charcoal);
                color: white;
                transform: translateY(-3px);
                box-shadow: var(--shadow-md);
            }

            body.dark-mode .btn:hover {
                background: var(--matrix-green);
                color: var(--matrix-black);
                box-shadow: var(--shadow-md);
            }

            .btn-settings:hover {
                background: var(--dark-blue);
                color: white;
            }

            body.dark-mode .btn-settings:hover {
                background: var(--matrix-green-bright);
                color: var(--matrix-black);
                box-shadow: none;
            }
        }

        .btn:active {
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        body.dark-mode .btn {
            background: var(--matrix-black);
            border: 2px solid var(--matrix-green);
            color: var(--matrix-green);
        }

        /* Settings button - unique style */
        .btn-settings {
            background: var(--gold);
            color: var(--charcoal);
            border: 2px solid var(--charcoal);
            font-weight: 700;
            position: relative;
        }

        body.dark-mode .btn-settings {
            background: var(--matrix-green);
            color: var(--matrix-black);
            border: 2px solid var(--matrix-green-bright);
            box-shadow: none;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 15px;
            margin-top: 30px;
        }

        .stat-item {
            background: var(--cream);
            border: 3px solid var(--charcoal);
            padding: 15px;
            text-align: center;
            transition: all 0.3s;
        }

        body.dark-mode .stat-item {
            background: var(--matrix-card);
            border: 3px solid var(--matrix-green);
        }

        .stat-value {
            font-size: 2.5rem;
            font-weight: 600;
            color: var(--red);
            display: block;
            font-family: 'Bebas Neue', sans-serif;
            letter-spacing: 2px;
            transition: color 0.3s, text-shadow 0.3s;
        }

        body.dark-mode .stat-value {
            color: var(--matrix-green);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--dark-blue);
            text-transform: uppercase;
            letter-spacing: 1px;
            transition: color 0.3s;
        }

        body.dark-mode .stat-label {
            color: var(--matrix-text-dim);
        }

        /* Settings Styles */
        .settings-section {
            margin-bottom: 30px;
        }

        .settings-section-title {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--charcoal);
            margin: 0 0 15px 0;
            opacity: 0.6;
        }

        body.dark-mode .settings-section-title {
            color: var(--matrix-text);
            opacity: 0.5;
        }

        .setting-item {
            padding: 16px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.08);
            transition: all 0.2s;
        }

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

        .setting-item:hover {
            padding-left: 8px;
        }

        body.dark-mode .setting-item {
            border-bottom: 1px solid rgba(0, 255, 65, 0.1);
        }

        .setting-info {
            flex: 1;
        }

        .setting-label {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 3px;
            color: var(--charcoal);
        }

        body.dark-mode .setting-label {
            color: var(--matrix-text);
        }

        .setting-desc {
            font-size: 0.85rem;
            opacity: 0.65;
            line-height: 1.4;
        }

        .settings-tip {
            background: rgba(255, 107, 53, 0.08);
            border-left: 3px solid var(--red);
            padding: 12px 16px;
            margin: 25px 0;
            font-size: 0.9rem;
            border-radius: 4px;
        }

        body.dark-mode .settings-tip {
            background: rgba(0, 255, 65, 0.05);
            border-left: 3px solid var(--matrix-green);
            color: var(--matrix-text);
        }

        /* Toggle Switch - More Modern */
        .toggle-switch {
            position: relative;
            width: 50px;
            height: 26px;
            flex-shrink: 0;
        }

        .toggle-switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .toggle-slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: #cbd5e0;
            transition: 0.3s;
            border-radius: 26px;
        }

        body.dark-mode .toggle-slider {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .toggle-slider:before {
            position: absolute;
            content: "";
            height: 20px;
            width: 20px;
            left: 3px;
            bottom: 3px;
            background-color: white;
            transition: 0.3s;
            border-radius: 50%;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        body.dark-mode .toggle-slider:before {
            background-color: rgba(255, 255, 255, 0.9);
        }

        input:checked + .toggle-slider {
            background-color: var(--dark-blue);
        }

        body.dark-mode input:checked + .toggle-slider {
            background-color: var(--matrix-green);
        }

        input:checked + .toggle-slider:before {
            transform: translateX(24px);
        }

        body.dark-mode input:checked + .toggle-slider:before {
            background-color: var(--matrix-black);
        }

        /* Footer */
        footer {
            width: 100%;
            background: var(--charcoal);
            color: white;
            padding: 30px 20px;
            margin-top: 50px;
            border-top: 4px solid var(--dark-blue);
            transition: all 0.3s;
        }

        body.dark-mode footer {
            background: var(--matrix-card);
            border-top: 4px solid var(--matrix-green);
            color: var(--matrix-text);
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            text-align: center;
        }

        .footer-content p {
            margin-bottom: 10px;
            font-size: 0.9rem;
            letter-spacing: 1px;
        }

        .footer-links {
            display: flex;
            gap: 20px;
            justify-content: center;
            margin-top: 15px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: var(--gold);
            text-decoration: none;
            font-weight: 600;
            transition: color 0.2s;
        }

        body.dark-mode .footer-links a {
            color: var(--matrix-green);
        }

        .footer-links a:hover {
            color: white;
        }

        body.dark-mode .footer-links a:hover {
            color: var(--matrix-green-bright);
        }

        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }

            h1 {
                font-size: 2.5rem;
                letter-spacing: 3px;
            }

            .nav-logo {
                font-size: 1.5rem;
                letter-spacing: 3px;
            }

            /* Compress quiz elements to fit more on screen */
            .quiz-header {
                margin-bottom: 16px;
                gap: 8px;
            }

            .score {
                font-size: 0.95rem;
                padding: 6px 14px;
                border: 2px solid var(--charcoal);
            }

            body.dark-mode .score {
                border: 2px solid var(--matrix-green);
            }

            .progress {
                font-size: 0.85rem;
            }

            .character-display {
                margin: 16px 0 24px 0;
            }

            .cyrillic-char {
                font-size: 5.5rem;
                text-shadow: 3px 3px 0 var(--gold);
            }

            .cyrillic-char-lowercase {
                font-size: 3.2rem;
            }

            /* Audio button - better positioning for mobile */
            .audio-btn {
                right: 8%;
                width: 45px;
                height: 45px;
                font-size: 1.2rem;
            }

            .input-section {
                margin-bottom: 16px;
            }

            .input-wrapper {
                flex-direction: column;
                align-items: stretch;
                margin-bottom: 10px;
            }

            input[type="text"] {
                font-size: 1.3rem;
                max-width: 100%;
                min-width: auto;
                padding: 14px 18px;
            }

            .btn-submit {
                width: 100%;
                font-size: 1.2rem;
                padding: 13px;
            }

            .feedback {
                font-size: 1.4rem;
                margin-top: 10px;
                min-height: 36px;
            }

            .action-buttons {
                margin-top: 16px;
                gap: 8px;
            }

            .action-buttons .btn {
                font-size: 0.95rem;
                padding: 10px 14px;
            }

            .selection-header {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }

            .selection-header h2 {
                text-align: center;
                min-width: auto;
            }

            .selection-controls {
                width: 100%;
                justify-content: center;
                gap: 8px;
            }

            .btn-control {
                flex: 1;
                max-width: 160px;
                font-size: 0.9rem;
                padding: 12px 16px;
            }

            /* Keep 2 columns on mobile - compact enough */
            #reference-container {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            /* 2 columns of characters inside each group tile */
            .reference-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 4px;
            }

            /* Tighter tile padding on mobile */
            .reference-section {
                padding: 10px;
            }

            /* Slightly tighter char tiles */
            .char-ref-item {
                padding: 5px 3px;
            }

            /* Mobile-optimized reference tables - compress to avoid horizontal scroll */
            #reference-page table {
                font-size: 0.85rem;
            }

            #reference-page th {
                padding: 8px 4px !important;
                font-size: 0.75rem;
                line-height: 1.2;
                white-space: normal;
                word-wrap: break-word;
            }

            #reference-page td {
                padding: 8px 4px !important;
                font-size: 0.85rem;
            }

            /* Shrink the letter column on mobile */
            #reference-page td:first-child span {
                font-size: 1.3rem !important;
            }

            #reference-page td:first-child span:last-child {
                font-size: 1rem !important;
            }

            /* Mobile article back button - make smaller */
            .article-back-btn {
                padding: 6px 12px;
                font-size: 0.85rem;
            }

            .article-header h2 {
                padding-right: 90px; /* Less space on mobile */
            }
        }

        /* ==================== PAGE-SPECIFIC LAYOUTS ==================== */
        /* Constrain text-heavy pages for better readability */
        #about-page .card,
        #contact-page .card,
        #privacy-page .card,
        #reference-page .card {
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .featured-guides {
            padding: 15px 24px;
        }

        .featured-guides h2 {
            font-size: 1.4rem;
            margin-bottom: 2px;
        }

        .featured-guides .related-articles-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-bottom: 10px;
        }

        .featured-guides .related-article-card {
            padding: 12px 15px;
        }

        .featured-guides .related-article-card h4 {
            margin: 0 0 4px 0;
            font-size: 1rem;
        }

        .featured-guides .related-article-card p {
            font-size: 0.85rem;
            line-height: 1.3;
        }

        @media (max-width: 768px) {
            .featured-guides .related-articles-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ==================== CYRILLIC COPY-PASTE BUTTONS ==================== */
        .copy-char-btn {
            background: var(--paper);
            border: 2px solid var(--dark-blue);
            border-radius: 8px;
            padding: 15px 10px;
            font-family: 'Bebas Neue', sans-serif;
            font-size: 2rem;
            color: var(--dark-blue);
            cursor: pointer;
            transition: all 0.2s;
            text-align: center;
            position: relative;
        }
        .copy-char-btn:hover {
            background: var(--dark-blue);
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }
        .copy-char-btn.copied {
            background: var(--red);
            color: white;
            border-color: var(--red);
        }
        body.dark-mode .copy-char-btn {
            background: var(--matrix-black);
            border-color: var(--matrix-green);
            color: var(--matrix-green);
        }
        body.dark-mode .copy-char-btn:hover {
            background: var(--matrix-green);
            color: var(--matrix-black);
        }
        body.dark-mode .copy-char-btn.copied {
            background: var(--matrix-green-bright);
            border-color: var(--matrix-green-bright);
        }
        .copy-feedback {
            font-size: 0.7rem;
            font-family: 'Roboto', sans-serif;
            margin-top: 5px;
            display: block;
            opacity: 0;
            transition: opacity 0.2s;
        }
        .copy-char-btn.copied .copy-feedback {
            opacity: 1;
        }

/* Font Awesome icon spacing in share buttons */
.share-btn i {
    margin-right: 6px;
}

/* Article Navigation with Titles */
.nav-btn {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    min-height: 60px;
    max-width: 300px;  /* Prevent stretching */
    padding: 12px 20px !important;
}

.nav-direction {
    font-weight: bold;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.nav-title {
    font-size: 0.85rem;
    color: #666;
    font-weight: normal;
    text-align: center;
    line-height: 1.2;
    max-width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    /* Limit to 3 lines with ellipsis */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Related Articles Grid */
.related-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.related-article-card {
    border: 2px solid var(--cream);
    border-radius: 8px;
    padding: 20px;
    background: white;
    cursor: pointer;
    transition: all 0.2s;
}

.related-article-card:hover {
    border-color: var(--red);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.related-article-card h4 {
    margin: 0 0 10px 0;
    font-size: 1.1rem;
    color: var(--charcoal);
}

.related-article-card p {
    margin: 0;
    font-size: 0.9rem;
    color: #666;
    line-height: 1.4;
}

/* Mobile responsiveness for navigation */
@media (max-width: 768px) {
    .article-navigation {
        flex-direction: column;  /* Stack vertically */
        gap: 15px;
    }
    
    .article-navigation .btn,
    .nav-btn {
        width: 100% !important;  /* Full width on mobile */
        max-width: 100% !important;  /* Override desktop max-width */
    }
    
    .nav-title {
        font-size: 0.75rem;
    }
    
    .related-articles-grid {
        grid-template-columns: 1fr;
    }
}

/* Interactive Tool CTA Banner */
.tool-cta-banner {
    margin: 40px 0 30px 0;
    padding: 18px 25px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-left: 4px solid var(--red);
    border-radius: 6px;
    text-align: center;
}

.tool-cta-content p {
    font-size: 0.95rem;
    line-height: 1.5;
    color: #555;
    margin: 0 0 12px 0;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

.tool-cta-content strong {
    color: var(--red);
    font-weight: 600;
}

.tool-cta-btn {
    background: var(--red) !important;
    color: white !important;
    font-size: 0.9rem !important;
    padding: 10px 24px !important;
    font-weight: 600 !important;
    border-radius: 5px;
    box-shadow: 0 2px 6px rgba(231, 76, 60, 0.2);
    transition: all 0.2s ease;
}

.tool-cta-btn:hover {
    background: #c0392b !important;
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(231, 76, 60, 0.3);
}

/* Dark mode support */
body.dark-mode .tool-cta-banner {
    background: linear-gradient(135deg, rgba(0, 255, 65, 0.05) 0%, rgba(0, 255, 65, 0.08) 100%);
    border-left-color: var(--matrix-green);
}

body.dark-mode .tool-cta-content p {
    color: var(--matrix-text);
}

body.dark-mode .tool-cta-content strong {
    color: var(--matrix-green);
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .tool-cta-banner {
        margin: 30px 0 25px 0;
        padding: 16px 20px;
    }
    
    .tool-cta-content p {
        font-size: 0.9rem;
        margin-bottom: 10px;
    }
    
    .tool-cta-btn {
        font-size: 0.85rem !important;
        padding: 9px 20px !important;
        width: 100%;
    }
}

/* ==================== MINI QUIZ (EMBEDDED IN ARTICLES) ==================== */
.mini-quiz-container {
    margin: 40px auto;
    padding: 15px;
    max-width: 500px;
    background: linear-gradient(135deg, #fff5f5 0%, #ffe8e8 100%);
    border: 2px solid var(--red);
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.mini-quiz-container .audio-btn {
    position: static;
    transform: none;
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.mini-quiz-container .audio-btn:hover {
    transform: scale(1.1);
}

.mini-quiz-header h3 {
    color: var(--red);
    font-size: 1.3rem;
    margin-bottom: 3px;
}

.mini-quiz-header p {
    margin: 0;
}

#mini-quiz-content, .quiz-content {
    margin-top: 10px;
}

.mini-char-display {
    text-align: center;
    font-size: 72px;
    font-weight: bold;
    color: var(--charcoal);
    margin: 8px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.quiz-char-lower {
    font-size: 60px;
    color: #666;
    margin-left: 10px;
}

.mini-input-area {
    display: flex;
    gap: 8px;
    max-width: 380px;
    margin: 8px auto;
}

.quiz-answer-input {
    flex: 1;
    padding: 10px 12px;
    font-size: 1.1rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    text-align: center;
}

.quiz-answer-input:focus {
    outline: none;
    border-color: var(--red);
}

.quiz-feedback {
    text-align: center;
    font-weight: bold;
    font-size: 1.1rem;
    margin: 8px 0;
    min-height: 26px;
}

.mini-quiz-stats {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 10px 0 8px 0;
    padding: 10px;
    background: white;
    border-radius: 8px;
    flex-wrap: wrap;
}

.mini-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.mini-stat-label {
    font-size: 0.75rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mini-stat span:last-child {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--red);
}

.mini-quiz-controls {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
}

.btn-secondary {
    background: #6c757d !important;
}

.btn-secondary:hover {
    background: #5a6268 !important;
}

/* Dark mode support */
body.dark-mode .mini-quiz-container {
    background: linear-gradient(135deg, rgba(0, 255, 65, 0.08) 0%, rgba(0, 255, 65, 0.12) 100%);
    border-color: var(--matrix-green);
}

body.dark-mode .mini-quiz-header h3 {
    color: var(--matrix-green);
}

body.dark-mode .mini-char-display {
    color: var(--matrix-text);
}

body.dark-mode .quiz-char-lower {
    color: var(--matrix-green);
}

body.dark-mode .quiz-answer-input {
    background: rgba(0, 0, 0, 0.3);
    border-color: var(--matrix-green);
    color: var(--matrix-text);
}

body.dark-mode .mini-quiz-stats {
    background: rgba(0, 0, 0, 0.3);
}

body.dark-mode .mini-stat span:last-child {
    color: var(--matrix-green);
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .mini-quiz-container {
        padding: 12px;
        max-width: 100%;
    }
    
    .mini-char-display {
        font-size: 56px;
        margin: 8px 0;
    }
    
    .quiz-char-lower {
        font-size: 48px;
    }
    
    .mini-input-area {
        flex-direction: column;
        max-width: 100%;
        margin: 8px auto;
    }
    
    .quiz-answer-input {
        width: 100%;
    }
    
    .mini-quiz-stats {
        gap: 12px;
        margin: 10px 0;
        padding: 8px;
    }
    
    .mini-quiz-controls {
        flex-direction: column;
        margin-top: 8px;
    }
    
    .mini-quiz-controls .btn {
        width: 100%;
    }
}