:root {
        --retro-brown: #964B00;
        --olive-green: #556B2F;
        --beige: #F5F5DC;
        --neon-blue: #0F52BA;
        --fluorescent-purple: #BF00FF;
        --metallic-silver: #C0C0C0;
        --background-gradient: linear-gradient(135deg, var(--beige) 0%, var(--olive-green) 100%);
        --header-footer-gradient: linear-gradient(90deg, var(--neon-blue), var(--fluorescent-purple));
        --font-title: 'Orbitron', sans-serif;
        --font-body: 'Roboto', sans-serif;
    }

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

    body {
        font-family: var(--font-body);
        background: var(--background-gradient);
        color: var(--retro-brown);
        line-height: 1.6;
        padding: 20px;
    }

    header, footer {
        background: var(--header-footer-gradient);
        color: white;
        padding: 15px 20px;
        position: fixed;
        width: 100%;
        left: 0;
        z-index: 1000;
    }

    header {
        top: 0;
    }

    footer {
        bottom: 0;
        text-align: center;
    }

    .container {
        display: flex;
        margin-top: 70px;
        margin-bottom: 50px;
    }

    nav {
        width: 200px;
        background: var(--retro-brown);
        padding: 20px;
        height: calc(100vh - 120px);
        position: fixed;
        top: 50px;
        left: 0;
        overflow-y: auto;
    }

    nav a {
        display: block;
        color: white;
        text-decoration: none;
        margin-bottom: 15px;
        font-family: var(--font-title);
        transition: color 0.3s;
    }

    nav a:hover {
        color: var(--fluorescent-purple);
    }

    .main-content {
        margin-left: 220px;
        flex: 1;
        padding: 20px;
        background: rgba(245, 245, 220, 0.8);
        border-radius: 10px;
        box-shadow: 0 0 10px rgba(0,0,0,0.1);
    }

    h1, h2, h3, h4 {
        font-family: var(--font-title);
        color: var(--olive-green);
        margin-bottom: 10px;
    }

    pre {
        background: #333;
        color: #fff;
        padding: 10px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
    }

    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    table, th, td {
        border: 1px solid var(--retro-brown);
    }

    th, td {
        padding: 10px;
        text-align: left;
    }

    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin: 20px 0;
    }

    .image-gallery img {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 5px;
    }

    .badge {
        display: inline-block;
        background: var(--neon-blue);
        color: white;
        padding: 5px 10px;
        border-radius: 5px;
        margin-top: 10px;
    }

    .button {
        background: var(--fluorescent-purple);
        color: white;
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: transform 0.2s ease-in-out, background 0.3s;
        font-family: var(--font-title);
    }

    .button:active {
        transform: scale(0.95);
        background: var(--metallic-silver);
    }

    @media (max-width: 768px) {
        nav {
            width: 150px;
        }

        .main-content {
            margin-left: 170px;
        }
    }

    @media (max-width: 480px) {
        nav {
            position: relative;
            width: 100%;
            height: auto;
            top: 0;
        }

        .main-content {
            margin-left: 0;
        }

        .image-gallery {
            flex-direction: column;
            align-items: center;
        }
    }