body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background: radial-gradient(circle, rgb(25, 31, 48), rgb(2, 6, 14));
    color: #f9f9f9;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    position: relative;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, #003366, #2c3e50);
    animation: aurora-move 15s linear infinite;
}

@keyframes aurora-move {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

header h1 {
    font-size: 4rem;
    font-weight: bold;
    color: #ffffff;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.module {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.module:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 255, 0, 0.3);
}

.module img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 10px;
}

.module h2 {
    font-size: 1.8rem;
    color: #39b54a;
    margin-bottom: 10px;
}

.module p {
    font-size: 1rem;
    color: #dcdcdc;
}

code {
    background: rgba(0, 255, 0, 0.1);
    padding: 2px 5px;
    border-radius: 4px;
    font-family: 'Roboto Mono', monospace;
    color: #39b54a;
}

pre {
    background: rgba(0, 255, 0, 0.1);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
}

button {
    background: linear-gradient(to right, #003366, #39b54a);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
}

button:hover {
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.5);
}

.lock-icon {
    width: 50px;
    height: 50px;
    background-color: #003366;
    border-radius: 50%;
    animation: rotateLock 2s infinite linear;
    margin: 0 auto;
}

@keyframes rotateLock {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

footer {
    background: linear-gradient(to bottom, #003366, #2c3e50);
    padding: 20px;
    text-align: center;
    color: #dcdcdc;
    font-size: 0.9rem;
}