/* 첨부 이미지 미리보기 팝업 — user/admin 양쪽 화면에서 공용으로 쓴다 */
.file-preview-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .8);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 1000;
}

.file-preview-overlay[hidden] {
    display: none;
}

.file-preview-card {
    position: relative;
    max-width: min(90vw, 1100px);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.file-preview-img {
    max-width: 100%;
    max-height: calc(90vh - 40px);
    border-radius: 8px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, .5);
    background: #fff;
    object-fit: contain;
}

.file-preview-caption {
    color: #f2f2f2;
    font-size: .85rem;
    text-align: center;
    word-break: break-all;
}

.file-preview-close {
    position: absolute;
    top: -18px;
    right: -18px;
    width: 36px;
    height: 36px;
    border-radius: 100px;
    border: none;
    background: #fff;
    color: #1b1b1f;
    font-size: 1.3rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 4px rgba(0, 0, 0, .4);
}

.file-preview-close:hover {
    background: #eee;
}