#iw-popup-overlay {
    position: fixed;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    top: 0;
    left: 0;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

#iw-popup-box {
    background: #fff;
    padding: 25px;
    width: 450px;
    border-radius: 10px;
    position: relative;
    animation: popupFade 0.4s ease-in-out;
}

#iw-popup-close {
    position: absolute;
    right: 12px;
    top: 10px;
    cursor: pointer;
    font-size: 22px;
}

.popup-btn {
    display: inline-block;
    background: #0073aa;
    color: #fff;
    padding: 10px 18px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 15px;
}

.popup-btn:hover {
    background: #005177;
}

@keyframes popupFade {
    from {transform: scale(0.8); opacity: 0;}
    to {transform: scale(1); opacity: 1;}
}