theme-product-navigation {
    display: none;
}

@media (max-width: 767px) {
    theme-product-navigation {
        position: fixed;
        z-index: 29;
        width: 100vw;
        background: #fff;
        left: 0;
    }

    theme-product-navigation[data-position="top"] {
        top: 60px;
    }

    theme-product-navigation[data-position="bottom"] {
        bottom: 10px;
        top: unset;
    }

    theme-product-navigation.is-visible {
        display: block;
    }

    .product-navigation__list {
        display: flex;
        justify-content: space-evenly;
        align-items: center;
        padding-top: var(--nav-padding-top, 0);
        padding-bottom: var(--nav-padding-bottom, 0);
    }

    .product-navigation__item {
        flex: 1;
        padding: 8px 5px;
        text-align: center;
        border-bottom: 2px solid transparent;
        font-size: 0.9rem;
        background-color: var(--nav-bg-color, #fff);
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .product-navigation__item:hover {
        opacity: 0.8;
    }

    .product-navigation__item.active {
        color: var(--nav-text-color, #000);
        font-weight: 600;
        border-bottom-color: var(--nav-text-color, #000);
    }
}