body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(90deg, #007bff, #0056b3);
    color: white;
    padding: 15px 20px;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 24px;
    margin: 0;
    text-align: center;
}

.container {
    padding-top: 80px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

section {
    margin-bottom: 40px;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

section:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

h2 {
    color: #007bff;
    font-size: 28px;
    margin-bottom: 15px;
    text-align: center;
}

h3 {
    color: #333;
    font-size: 22px;
    margin-top: 20px;
    margin-bottom: 10px;
}

p {
    font-size: 16px;
    margin-bottom: 15px;
    text-align: justify;
}

ul, ol {
    margin-left: 20px;
    margin-bottom: 15px;
}

pre {
    background: #f4f4f4;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-size: 14px;
    color: #333;
}

code {
    background: #eaeaea;
    padding: 2px 5px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}

.button {
    display: inline-block;
    background: linear-gradient(90deg, #007bff, #0056b3);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
    text-decoration: none;
}

.button:hover {
    background: linear-gradient(90deg, #0056b3, #007bff);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

@media (max-width: 768px) {
    h2 {
        font-size: 24px;
    }

    h3 {
        font-size: 20px;
    }

    p, li {
        font-size: 14px;
    }

    pre {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 20px;
    }

    section {
        padding: 15px;
    }

    .image-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
}

footer {
    text-align: center;
    padding: 20px;
    background: #007bff;
    color: white;
    margin-top: 40px;
}