.horizontal-submenu {
    padding: 10px;
    width: 100%;
    position: relative;
}

.main-menu {
    list-style: none;
    display: flex;
    gap: 40px;
    margin: 0;
    padding: 0;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.menu-item {
    position: relative;
}

.menu-item > a {
    text-decoration: none;
    color: #333;
    text-transform: uppercase;
}

.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translate(-50%, 0);
    background: #fff;
    list-style: none;
    z-index: 1000;
    border-radius: 0 0 5px 5px;
    box-shadow: 0 16px 19px rgba(0, 0, 0, 0.15);
    width: calc((1110px* 0.6));
    padding-top: 20px;
    padding-bottom: 20px;
}

.submenu li a {
    display: block;
    padding: 10px;
    color: #555;
    text-decoration: none;
}

.menu-item:hover .submenu {
    display: block;
}

.menu-toggle {
    display: none;
    background: none;
    font-size: 24px;
    border: none;
    cursor: pointer;
}

/* 🌐 Responsive mobile version */
@media (max-width: 768px) {

    #header .vertical-center {
        height: 100%;
    }

    .horizontal-submenu {
        display: flex;
        position: unset;
    }

    .menu-toggle {
        display: block;
    }

    .main-menu {
        display: none;
        flex-direction: column;
        background: #fff;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        border-top: 1px solid #ddd;
    }

    .main-menu.show {
        display: flex;
        width: 100vw;
        flex-direction: column;
        flex-wrap: nowrap;
        align-content: flex-start;
        justify-content: center;
        align-items: flex-start;
        z-index: 10000;
        gap: 20px;
        padding-top: 20px;
        padding-bottom: 20px;
        border-bottom: 1px solid #ddd;
    }

    .submenu {
        position: static;
        display: none !important;
        border: none;
        transform: none;
        width: 100vw;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .menu-item > a {
        display: block;
        padding: 10px 20px;
    }

    .menu-item.open .submenu {
        display: block !important;
        max-height: 1000px;
    }
}