body {
    margin: 0;
    font-family: 'Roboto Mono', monospace;
    background: linear-gradient(to bottom, #000033, #330066);
    color: #ffffff;
    line-height: 1.8;
}

.container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 20%;
    background: rgba(0, 0, 51, 0.9);
    padding: 20px;
    box-shadow: 0 0 15px rgba(0, 255, 153, 0.4);
}

.sidebar ul {
    list-style: none;
    padding: 0;
}

.sidebar li {
    margin: 15px 0;
    font-size: 1.2em;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: transform 0.3s ease, color 0.3s ease;
}

.sidebar li:hover {
    transform: scale(1.1);
    color: #00ff99;
}

.main-content {
    width: 80%;
    background: rgba(51, 0, 102, 0.9);
    padding: 40px;
    text-align: justify;
    position: relative;
    overflow: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Fira Code', monospace;
    color: #00ff99;
    text-shadow: 0 0 10px #00ff99;
}

h1 {
    font-size: 3em;
    text-transform: italic;
    margin-bottom: 20px;
}

h2 {
    font-size: 2.2em;
    margin-top: 40px;
}

h3 {
    font-size: 1.8em;
    margin-top: 30px;
}

p {
    font-size: 1em;
    line-height: 1.8;
    margin-bottom: 20px;
}

pre {
    background: rgba(0, 255, 153, 0.1);
    padding: 20px;
    border-radius: 10px;
    border: 1px solid rgba(0, 255, 153, 0.5);
    overflow-x: auto;
    margin: 20px 0;
}

code {
    color: #00ff99;
    font-family: 'Fira Code', monospace;
    font-size: 0.9em;
}

button {
    background-color: #00ff99;
    border: none;
    color: white;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

button:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px #00ff99;
}

.parallax {
    background-image: url('https://images.gptkong.com/demo/sample1.png');
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 100vh;
    position: relative;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 255, 153, 0.4);
    transition: transform 0.3s ease;
}

.image-grid img:hover {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    .sidebar, .main-content {
        width: 100%;
        padding: 20px;
    }
    h1 {
        font-size: 2.5em;
    }
    h2 {
        font-size: 2em;
    }
    pre {
        font-size: 0.8em;
    }
}