.popup_overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 팝업들이 겹칠 때 살짝씩 어긋나게 배치 (선택 사항) */
#event_popup_overlay_2 .popup_content { transform: translate(20px, 20px); }
#event_popup_overlay_3 .popup_content { transform: translate(40px, 40px); }

.popup_content {
    background: #fff;
    width: 90%;
    max-width: 450px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
}

.popup_footer {
    display: flex;
    background: #222;
    padding: 12px;
    justify-content: space-between;
}

.popup_footer button {
    background: none;
    border: none;
    color: #fff;
    font-size: 12px;
    cursor: pointer;
}

.popup_footer button:hover {
    text-decoration: underline;
}