header{
    width: 100%;
    height: 10vmin;
    display: flex;
    flex-direction: row;
    background: #000a;
    justify-content: space-between;
    align-items: center;
}
header a img{
    width: 10vmin;
    height: 10vmin;
}
header a div{
    font-size: 6vmin;
    width: 50vmin;
    margin: 0;
    text-align: center;
    text-shadow:
            0.1vmin 0.1vmin 1vmin deeppink,
            -0.1vmin -0.1vmin 1vmin purple;
}

header a{
    display: flex;
    flex-direction: row;
    align-items: center;
    color: white;
    text-decoration: none;

    height: 10vmin;
}
.header-payment {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #333;
}

/* Menu item for payment page */
.menu-item-payment {
    position: relative;
}

.menu-item-payment::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-red);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.menu-item-payment:hover::after {
    transform: scaleX(1);
}