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

header {
    background: radial-gradient(circle, #00008B, #8A2BE2);
    color: #fff;
    text-align: center;
    padding: 40px 20px;
    animation: fadeIn 2s ease-in-out;
}

header h1 {
    font-size: 3rem;
    font-weight: bold;
    margin: 0;
}

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

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
    max-width: 1440px;
    margin: 0 auto;
}

.grid-item {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 20px;
    transition: transform 0.3s ease-in-out;
}

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

.gradient-box {
    background: radial-gradient(circle, #FFA500, #FFD700);
    color: #fff;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.section-title {
    font-size: 2rem;
    font-weight: bold;
    color: #00008B;
    margin-bottom: 20px;
}

article {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.8;
    margin-top: 40px;
    padding: 20px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

article h2 {
    font-size: 2.5rem;
    color: #1E90FF;
    margin-bottom: 20px;
}

article pre {
    background: #f5f5f5;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

article code {
    color: #D2691E;
    font-size: 1rem;
}

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

table th, table td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}

table th {
    background: #00008B;
    color: #fff;
}

.module-card {
    background: radial-gradient(circle, #8A2BE2, #00008B);
    color: #fff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    animation: slideIn 1s ease-in-out;
}

@keyframes slideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.module-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

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

    article h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}