/* 전체 화면을 덮는 어두운 배경 */
    #msgOverlay {
        display: none;
        position: fixed;
        z-index: 9998;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
    }

    /* 팝업 박스 */
    #msgDialog {
        position: fixed;
        z-index: 9999;
        max-width: 420px;
        width: 90%;
        background: #fff;
        border-radius: 8px;
        box-shadow: 0 8px 25px rgba(0,0,0,0.3);
        padding: 16px 16px 12px;
        box-sizing: border-box;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        font-family: sans-serif;
    }

    #msgDialogTitle {
        font-size: 0.8rem;
        font-weight: bold;
        margin-bottom: 8px;
    }

    #msgDialogBody {
        max-height: 300px;
        overflow-y: auto;
        font-size: 0.7rem;
        line-height: 1.4;
        padding: 4px 0 8px;
    }

    #msgDialogButtons {
        margin-top: 8px;
        text-align: right;
    }

    #msgDialogButtons button {
        min-width: 72px;
        padding: 6px 12px;
        margin-left: 6px;
        border-radius: 4px;
        border: 1px solid #ccc;
        background: #f5f5f5;
        cursor: pointer;
        font-size: 0.65rem;
    }

    #msgDialogButtons button.btn-ok {
        background: #007bff;
        border-color: #007bff;
        color: #fff;
    }

    #msgDialogButtons button:hover {
        opacity: 0.9;
    }