.gradient-bg {
    background: linear-gradient(135deg, #0078d4 0%, #004e8c 100%);
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}
.license-key {
    font-family: "Courier New", monospace;
    letter-spacing: 2px;
}
.pulse {
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 120, 212, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(0, 120, 212, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 120, 212, 0);
    }
}