body {
    font-family: 'Poppins', sans-serif;
    background-color: #0f172a; /* bg-slate-900 */
}
.promo-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    transform: translateY(20px);
    opacity: 0;
    filter: blur(5px);
}
.promo-card.in-view {
    transform: translateY(0);
    opacity: 1;
    filter: blur(0);
}
.card-1 { transition-delay: 0.1s; }
.card-2 { transition-delay: 0.2s; }
.card-3 { transition-delay: 0.3s; }
.card-4 { transition-delay: 0.4s; }
.best-offer {
    background: linear-gradient(135deg, #1e3a8a, #4338ca); /* Gradient biru tua */
    border: 2px solid #6366f1;
}