body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: radial-gradient(circle, rgb(26, 35, 126), transparent);
    color: #fff;
    overflow-x: hidden;
}
header {
    background: linear-gradient(135deg, #1A237E, #651FFF);
    padding: 20px;
    text-align: center;
    position: relative;
    animation: header-glow 10s infinite alternate;
}
@keyframes header-glow {
    0% { background: linear-gradient(135deg, #1A237E, #651FFF); }
    100% { background: linear-gradient(135deg, #651FFF, #1A237E); }
}
header h1 {
    font-size: 2.5rem;
    margin: 0;
    color: #FF9800;
    text-shadow: 0 0 10px rgba(255, 152, 0, 0.5);
}
main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    gap: 20px;
}
.module {
    background: linear-gradient(45deg, #f9f9f9, #ddd);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 20px;
    width: 100%;
    max-width: 800px;
    transition: transform 0.3s ease-in-out;
}
.module:hover {
    transform: translateY(-5px);
}
article {
    background: rgba(255, 255, 255, 0.8);
    color: #333;
    padding: 20px;
    border-radius: 10px;
    line-height: 1.6;
    text-align: justify;
}
article h2 {
    color: #1A237E;
    text-align: center;
}
pre {
    background: #333;
    color: #fff;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
}
button {
    background: #3F51B5;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
button:hover {
    background: #FF9800;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
table th, table td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: center;
}
table th {
    background: #651FFF;
    color: white;
}
footer {
    text-align: center;
    padding: 10px;
    background: #1A237E;
    color: #fff;
    margin-top: 20px;
}
@media (max-width: 768px) {
    header h1 { font-size: 2rem; }
    .module { padding: 15px; }
    article { padding: 15px; }
}