.copu-cart-open-wait {
    position: fixed;
    z-index: 10050;
    inset: 0;
    background: rgba(255,255,255,.82);
}
.copu-cart-open-wait[hidden] { display: none; }
.copu-cart-open-card {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    min-width: 280px;
    max-width: 90%;
    padding: 24px;
    text-align: center;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-shadow: 0 4px 18px rgba(0,0,0,.18);
}
.copu-cart-open-text { margin-top: 12px; font-weight: 600; }