.pdm-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 100001;
    max-width: 90%;
    display: none;
}

.pdm-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 100000;
    display: none;
}

.pdm-close {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #999;
    padding: 0;
    width: 30px;
    height: 30px;
    line-height: 30px;
}

.pdm-close:hover {
    color: #333;
}

.pdm-popup-content {
    position: relative;
}

/* Stacking for multiple popups */
.pdm-popup:nth-child(1) {
    z-index: 100003;
}

.pdm-popup:nth-child(2) {
    z-index: 100002;
}

.pdm-popup:nth-child(3) {
    z-index: 100001;
}