body {
    margin: 0;
    font-family: 'Futura', 'Helvetica', sans-serif;
    background: radial-gradient(circle, rgb(25, 25, 112), rgb(0, 0, 70));
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    background: linear-gradient(135deg, #1a1a40, #0d0d2b);
    padding: 40px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

header h1 {
    font-size: 3rem;
    color: #ff9800;
    margin: 0;
    animation: glow 3s infinite alternate;
}

@keyframes glow {
    from { text-shadow: 0 0 10px #ff9800; }
    to { text-shadow: 0 0 20px #ff9800, 0 0 30px #ff9800; }
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background: radial-gradient(circle, rgba(255, 152, 0, 0.2), transparent);
    transform: rotate(45deg);
    animation: aurora-move 15s linear infinite;
}

@keyframes aurora-move {
    from { transform: translateX(-50%) translateY(0) rotate(45deg); }
    to { transform: translateX(0) translateY(100%) rotate(45deg); }
}

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

.card {
    background: linear-gradient(135deg, #1e1e3a, #2c2c54);
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    transition: transform 0.3s ease-in-out;
    position: relative;
}

.card:hover {
    transform: scale(1.05);
}

.card img {
    width: 100%;
    height: auto;
    display: block;
}

.card-content {
    padding: 15px;
    text-align: center;
}

.card h3 {
    font-size: 1.5rem;
    color: #4caf50;
    margin: 10px 0;
}

.card p {
    font-size: 1rem;
    color: #ccc;
}

.grid-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    transition: background 0.3s ease;
}

.grid-item:hover {
    background: rgba(255, 255, 255, 0.2);
}

.code-block {
    background: #1a1a1a;
    color: #ffffff;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.4;
}

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

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

    .card h3 {
        font-size: 1.2rem;
    }
}

@media (min-width: 1024px) {
    .container {
        grid-template-columns: repeat(3, 1fr);
    }
}