#copy-popup {
    display: none;
    position: fixed;
    left: 50%;
    top: 20px;
    transform: translateX(-50%);
    background: #4f8cff;
    color: #fff;
    padding: 8px 20px;
    border-radius: 6px;
    font-size: 1em;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    z-index: 1000;
}