body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #1E2D5F, #8A2BE2);
    color: #fff;
    line-height: 1.6;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}

header h1 {
    font-size: 24px;
    font-weight: bold;
    color: #00FF99;
    margin: 0;
}

nav a {
    color: #fff;
    text-decoration: none;
    margin-left: 20px;
    font-size: 16px;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #00FF99;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

nav a:hover::after {
    transform: scaleX(1);
}

main {
    margin-top: 80px;
    padding: 20px;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.grid-item {
    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;
}

.grid-item:hover {
    transform: translateY(-5px);
}

h2, h3 {
    color: #00FF99;
}

code {
    background: rgba(0, 0, 0, 0.8);
    color: #00FF99;
    padding: 5px;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    display: block;
    margin: 10px 0;
}

pre {
    background: rgba(0, 0, 0, 0.8);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
}

article {
    background: rgba(0, 0, 0, 0.6);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 20px;
    }

    nav a {
        font-size: 14px;
        margin-left: 10px;
    }

    .grid-container {
        grid-template-columns: 1fr;
    }
}