#popup-modal.hidden {
    display: none;
}

#popup-modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
}

.modal-content {
    background: white;
    padding: 2rem;
    max-width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: 8px;
    position: relative;
}