.marcas-section {
    text-align: center;
    overflow: hidden;
    background: #ffffff;
    /* Fondo negro como mencionaste */
    position: relative;
}

.marcas-container {
    position: relative;
    margin: 0 auto;
    overflow: hidden;
}

.marcas-container::before,
.marcas-container::after {
    content: '';
    position: absolute;
    top: 0;
    width: 100px;
    height: 100%;
    z-index: 2;
}

.marcas-container::before {
    left: 0;
    background: linear-gradient(to right, rgb(255, 255, 255), rgba(255, 255, 255, 0));
}

.marcas-container::after {
    right: 0;
    background: linear-gradient(to left, rgb(255, 255, 255), rgb(255, 255, 255));
}

.marcas-grid {
    display: flex;
    gap: 10px;
    animation: scroll-logos 50s linear infinite;
    padding: 10px 0;
}

.marca {
    flex: 0 0 auto;
    width: 130px;
    height: 130px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: transparent;
    border-radius: 0;
    padding: 0;
    transition: transform 0.3s ease;
}

.marca img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: all 0.3s ease;
}

.marca:hover img {
    filter: grayscale(10%) brightness(1);
    transform: scale(1.1);
}

@keyframes scroll-logos {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-100%);
    }
}

.marcas-container:hover .marcas-grid {
    animation-play-state: paused;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .marca {
        width: 100px;
        height: 60px;
    }

    .marcas-container::before,
    .marcas-container::after {
        width: 50px;
    }

    .marcas-grid {
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .marca {
        width: 80px;
        height: 50px;
    }

    .marcas-container::before,
    .marcas-container::after {
        width: 30px;
    }

    .marcas-grid {
        gap: 20px;
    }
}