:root {
            --primary-blue: #1a5276;
            --secondary-teal: #16a085;
            --accent-orange: #e67e22;
            --light-aqua: #a3e4d7;
            --dark-navy: #154360;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--primary-blue) !important;
            text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
        }
        .nav-link {
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .nav-link:hover {
            color: var(--accent-orange) !important;
            transform: translateY(-2px);
        }
        h1, h2, h3 {
            color: var(--dark-navy);
            margin-bottom: 1.2rem;
        }
        h1 {
            border-bottom: 3px solid var(--secondary-teal);
            padding-bottom: 0.5rem;
            font-weight: 800;
        }
        h2 {
            border-left: 5px solid var(--accent-orange);
            padding-left: 1rem;
            margin-top: 2.5rem;
        }
        h3 {
            color: var(--primary-blue);
            margin-top: 1.8rem;
        }
        .content-section {
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            padding: 2.5rem;
            margin-bottom: 2rem;
            transition: transform 0.3s ease;
        }
        .content-section:hover {
            transform: translateY(-5px);
        }
        .highlight {
            background-color: var(--light-aqua);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid var(--secondary-teal);
            margin: 1.5rem 0;
        }
        .game-feature {
            background: linear-gradient(135deg, #e8f4f8 0%, #d1e7f5 100%);
            padding: 1.2rem;
            border-radius: 8px;
            margin: 1rem 0;
            transition: all 0.3s ease;
        }
        .game-feature:hover {
            transform: scale(1.02);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .img-fluid {
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
            margin: 1.5rem 0;
        }
        .img-fluid:hover {
            transform: scale(1.02);
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
        }
        footer {
            background: var(--dark-navy);
            color: white;
            padding: 2rem 0;
            margin-top: 3rem;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--accent-orange);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        .back-to-top:hover {
            background: var(--secondary-teal);
            transform: translateY(-5px);
        }
        .table-of-contents {
            background: linear-gradient(135deg, #e8f4f8 0%, #d1e7f5 100%);
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 2rem;
        }
        .table-of-contents ul {
            list-style-type: none;
            padding-left: 0;
        }
        .table-of-contents li {
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .table-of-contents li:before {
            content: "▸";
            position: absolute;
            left: 0;
            color: var(--accent-orange);
            font-weight: bold;
        }
        .table-of-contents a {
            text-decoration: none;
            color: var(--dark-navy);
            transition: all 0.2s ease;
        }
        .table-of-contents a:hover {
            color: var(--accent-orange);
            padding-left: 5px;
        }
        @media (max-width: 768px) {
            .content-section {
                padding: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
        }