.certificate-banner {
    width: 100%;
    background-color: transparent;
    padding: 20px 0;
    overflow: hidden;
    position: relative;
    margin: 40px auto;
    max-width: 800px;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.certificate-track {
    display: flex;
    width: max-content;
    animation: scroll-certs 60s linear infinite;
    gap: 40px;
    align-items: center;
}

.certificate-item {
    flex: 0 0 auto;
    width: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.certificate-item img {
    max-width: 100%;
    max-height: 80px;
    height: auto;
    object-fit: contain;
    filter: grayscale(0.2) opacity(0.85);
    transition: all 0.3s ease;
}

.certificate-item:hover img {
    filter: grayscale(0) opacity(1);
    transform: scale(1.05);
}

@keyframes scroll-certs {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Pause on hover */
.certificate-banner:hover .certificate-track {
    animation-play-state: paused;
}

@media (max-width: 768px) {
    .certificate-banner {
        margin: 20px auto;
    }
    .certificate-item {
        width: 100px;
    }
    .certificate-item img {
        max-height: 60px;
    }
}