body, html {
    margin: 0;
    padding: 0;
    font-family: 'Montserrat', sans-serif;
    background: linear-gradient(to bottom, #001f3f, #1e90ff);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 31, 63, 0.8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

header .logo {
    font-family: 'Roboto', sans-serif;
    font-size: 24px;
    font-weight: bold;
    color: #39ff14;
}

header nav a {
    color: #ffffff;
    text-decoration: none;
    margin-left: 20px;
    font-size: 16px;
    transition: color 0.3s ease;
}

header nav a:hover {
    color: #39ff14;
}

main {
    padding-top: 80px;
    min-height: 100vh;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
}

section {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

section:hover {
    transform: translateY(-5px);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto', sans-serif;
    color: #39ff14;
    margin-bottom: 15px;
}

p {
    color: #ffffff;
    font-size: 16px;
    line-height: 1.8;
}

pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

code {
    color: #39ff14;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
}

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

table th, table td {
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px;
    text-align: left;
}

table th {
    background: rgba(0, 0, 0, 0.2);
    color: #39ff14;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 10px 0;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.section {
    animation: fadeIn 1s ease-in-out;
}

@media (max-width: 768px) {
    header .logo {
        font-size: 20px;
    }

    header nav a {
        font-size: 14px;
    }

    main {
        grid-template-columns: 1fr;
    }

    section {
        padding: 15px;
    }

    pre {
        font-size: 12px;
    }
}