/* --- Global Variables --- */
:root {
    --primary-color: #2c3e50; /* 진한 남색 */
    --secondary-color: #34495e; /* 조금 더 연한 남색 */
    --accent-color: #e67e22; /* 주황색 포인트 */
    --white-color: #ffffff;
    --light-gray: #f8f9fa;
    --text-color: #343a40;
}

/* --- 게시판 목록 (Board List) --- */
.bo-list-container { padding: 20px 0; }

.bo-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
}

.bo-list-total {
    font-size: 16px;
    color: var(--secondary-color);
}

.bo-list-buttons a,
.bo-list-buttons button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 18px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    margin-left: 8px;
    cursor: pointer;
}

.bo-list-buttons .btn-write {
    background-color: var(--primary-color);
    color: var(--white-color);
    border: 1px solid var(--primary-color);
}

.bo-list-buttons .btn-write:hover { background-color: var(--secondary-color); }

.bo-list-buttons .btn-admin {
    background-color: #fff;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
}

.bo-list-buttons .btn-admin:hover {
    background-color: var(--accent-color);
    color: var(--white-color);
}

.list-chk-all {
    margin-bottom: 10px;
    padding: 10px;
    background-color: var(--light-gray);
    border-radius: 6px;
}

.bo-list-item {
    display: flex;
    align-items: center;
    padding: 20px 15px;
    border-bottom: 1px solid #e9ecef;
    transition: background-color 0.2s;
}

.bo-list-item:hover { background-color: var(--light-gray); }

.bo-list-item.is-notice {
    background-color: #fffaf5;
    border-left: 3px solid var(--accent-color);
}

.item-chk {
    flex-shrink: 0;
    margin-right: 15px;
}

.item-main {
    flex-grow: 1;
    min-width: 0;
}

.item-subject {
    margin-bottom: 8px;
    white-space: nowrap;
}

.item-notice-badge {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--white-color);
    font-size: 12px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    margin-right: 8px;
    vertical-align: middle;
}

.item-category {
    display: inline-block;
    background-color: #e9ecef;
    color: var(--secondary-color);
    font-size: 12px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    margin-right: 8px;
    vertical-align: middle;
    text-decoration: none;
}

.item-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    vertical-align: middle;
}

.item-title:hover { text-decoration: underline; }

.item-comment-count {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent-color);
    margin-left: 6px;
    vertical-align: middle;
}

.item-new-icon {
    display: inline-block;
    background: #e67e22;
    color: white;
    font-size: 10px;
    width: 16px;
    height: 16px;
    line-height: 16px;
    text-align: center;
    border-radius: 50%;
    margin-left: 6px;
    font-weight: bold;
    vertical-align: middle;
}

.item-meta {
    font-size: 14px;
    color: #868e96;
}

.item-meta span { margin-right: 12px; }

.item-meta span:not(:last-child)::after {
    content: '|';
    margin-left: 12px;
    color: #dee2e6;
}

.empty-list {
    padding: 80px 20px;
    text-align: center;
    color: #868e96;
    font-size: 18px;
    border-bottom: 1px solid #e9ecef;
}

.bo-list-footer {
    margin-top: 20px;
    text-align: right;
}

.bo-list-footer .btn-admin {
    padding: 6px 12px;
    font-size: 14px;
    background-color: #6c757d;
    color: white;
    border: 1px solid #6c757d;
    border-radius: 4px;
    cursor: pointer;
}

.bo-list-footer .btn-admin:hover { background-color: #5a6268; }

.bo-pagination {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.pg_wrap {
    display: flex;
    gap: 5px;
}

.pg_page, .pg_current, .pg_start, .pg_prev, .pg_next, .pg_end {
    display: inline-block;
    min-width: 32px;
    height: 32px;
    line-height: 30px;
    padding: 0 5px;
    text-align: center;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    text-decoration: none;
    color: var(--secondary-color);
    background-color: #fff;
}

.pg_page:hover, .pg_start:hover, .pg_prev:hover, .pg_next:hover, .pg_end:hover { background-color: #f8f9fa; }

.pg_current {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    font-weight: 700;
}

.bo-search-box {
    margin-top: 40px;
    padding: 20px;
    background-color: var(--light-gray);
    border-radius: 8px;
    text-align: center;
}

.bo-search-box form {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.bo-search-box select, .bo-search-box .sch-input {
    padding: 10px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 16px;
}

.bo-search-box .sch-input { width: 300px; }

.bo-search-box .sch-btn {
    padding: 10px 20px;
    background-color: var(--secondary-color);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
}

.bo-search-box .sch-btn:hover { background-color: var(--primary-color); }

/* 💡 [수정] 체크박스 스타일 수정 (원본 숨김, 커스텀 표시) */
.selec_chk {
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    opacity: 0;
    outline: 0;
    z-index: -1;
    overflow: hidden;
}

.chk_box {
    position: relative;
    display: inline-block;
}

.chk_box input[type="checkbox"] + label {
    position: relative;
    padding-left: 25px; /* 체크박스 공간 확보 */
    color: #676e70;
    cursor: pointer;
    line-height: 20px;
    display: inline-block;
}

.chk_box input[type="checkbox"] + label:hover { color: #2172f8; }

.chk_box input[type="checkbox"] + label span {
    position: absolute;
    top: 0;
    left: 0;
    width: 18px;
    height: 18px;
    display: block;
    background: #fff;
    border: 1px solid #d0d4df;
    border-radius: 3px;
}

.chk_box input[type="checkbox"]:checked + label { color: #000; }

.chk_box input[type="checkbox"]:checked + label span {
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="white" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"><polyline points="20 6 9 17 4 12"></polyline></svg>') no-repeat center center;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* --- 📌 게시판 쓰기 (Board Write) --- */
#bo_w {
    padding: 20px 0;
    max-width: 900px;
    margin: 0 auto;
}

#bo_w .write_div { margin-bottom: 30px; }

#bo_w .frm_label {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 12px;
}

#bo_w .frm_input {
    width: 100%;
    padding: 12px 15px;
    font-size: 16px;
    border: 1px solid #ced4da;
    border-radius: 6px;
    background-color: #fff;
    color: var(--text-color);
    transition: border-color 0.2s, box-shadow 0.2s;
}

#bo_w .frm_input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 62, 80, 0.1);
    outline: none;
}

#bo_w .cke_chrome {
    border-radius: 6px !important;
    border: 1px solid #ced4da !important;
    overflow: hidden;
}

.file_upload_grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.file_preview_wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 비율 */
    border: 2px dashed #ced4da;
    border-radius: 8px;
    background-color: var(--light-gray);
    transition: border-color 0.3s;
}

.file_preview_wrapper:hover { border-color: var(--primary-color); }

.file_preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.file_preview.is-video {
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="64" height="64" viewBox="0 0 24 24" fill="none" stroke="%23adb5bd" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><polygon points="23 7 16 12 23 17 23 7"></polygon><rect x="1" y="5" width="15" height="14" rx="2" ry="2"></rect></svg>');
    background-size: 48px;
    background-color: #e9ecef;
}

.preview_text {
    color: #868e96;
    font-weight: 500;
    padding: 0 10px;
    text-align: center;
    word-break: break-all;
}

.preview_info {
    position: absolute;
    bottom: 10px;
    left: 10px;
    right: 10px;
    background-color: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.current_file_name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 70%;
}

.preview_info .file_del label {
    color: #ffc107;
    text-decoration: none;
}

.preview_info .file_del label:hover { text-decoration: underline; }

#bo_w .btn_confirm {
    text-align: right;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #e9ecef;
}

#bo_w .btn_confirm .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    padding: 12px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 700;
    font-size: 16px;
    transition: all 0.3s ease;
    margin-left: 8px;
    border: 1px solid;
    cursor: pointer;
    line-height: 1;
}

#bo_w .btn_confirm .btn_cancel {
    background-color: #6c757d;
    color: var(--white-color);
    border-color: #6c757d;
}

#bo_w .btn_confirm .btn_cancel:hover { background-color: #5a6268; }

#bo_w .btn_confirm .btn_submit {
    background-color: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
}

#bo_w .btn_confirm .btn_submit:hover { background-color: var(--secondary-color); }

/* 💡 [최종 수정] CSS 충돌을 피하는 안정적인 커스텀 라디오 버튼 스타일 */
.option_group {
    display: flex;
    gap: 20px;
    align-items: center;
}

.option_group label {
    display: inline-flex; /* 내부 요소 정렬을 위해 inline-flex 사용 */
    align-items: center;
    gap: 8px;
    font-size: 16px;
    cursor: pointer;
    position: relative; /* 내부 input 위치의 기준점 */
}

/* 1. 실제 라디오 버튼은 시각적으로 완전히 숨깁니다. (스크린 리더는 인식 가능) */
.option_group input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    margin-bottom: 10px;
}

/* 2. 커스텀 라디오 버튼 역할을 할 span 요소의 기본 모양(바깥 원)을 만듭니다. */
.option_group .custom-radio {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #ced4da;
    border-radius: 50%;
    background-color: #fff;
    transition: all 0.2s ease;
    flex-shrink: 0; /* 크기가 줄어들지 않도록 설정 */
}

/* 3. 마우스를 올렸을 때 테두리 색상 변경 */
.option_group label:hover .custom-radio {
    border-color: var(--secondary-color);
}

/* 4. 실제 라디오 버튼이 체크되었을 때, span의 테두리 색상을 변경합니다. */
.option_group input[type="radio"]:checked + .custom-radio {
    border-color: var(--primary-color);
}

/* 5. 키보드 포커스를 받았을 때의 시각적 피드백 (웹 접근성) */
.option_group input[type="radio"]:focus-visible + .custom-radio {
    box-shadow: 0 0 0 3px rgba(44, 62, 80, 0.2);
}

/* 6. 체크되었을 때, 안쪽에 체크 표시(V)를 만듭니다. */
.option_group .custom-radio::after {
    content: '';
    display: block;
    width: 5px;
    height: 10px;
    border: solid var(--primary-color);
    border-width: 0 3px 3px 0;
    transform: translate(5px, 2px) rotate(45deg) scale(0); /* 기본적으로 숨김 */
    opacity: 0;
    transition: all 0.2s ease-in-out;
}

/* 7. 실제 라디오 버튼이 체크되었을 때, 체크 표시를 나타나게 합니다. */
.option_group input[type="radio"]:checked + .custom-radio::after {
    transform: translate(5px, 2px) rotate(45deg) scale(1); /* 보이게 함 */
    opacity: 1;
}

/* 8. disabled 상태일 때의 스타일 */
.option_group input[type="radio"]:disabled + .custom-radio {
    background-color: #e9ecef;
    border-color: #dee2e6;
    cursor: not-allowed;
}

.option_group input[type="radio"]:disabled:checked + .custom-radio::after {
    border-color: #868e96;
}

.option_group input[type="radio"]:disabled ~ span {
    color: #868e96;
}

/* 날짜 선택 그룹 스타일 */

.date_picker_group {
    display: flex;
    align-items: center;
    gap: 15px;
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
}

.date_picker_group .date_item { flex: 1; }

.date_picker_group .frm_label {
    font-size: 16px;
    margin-bottom: 8px;
}

.date_picker_group .datepicker { background-color: white; }

.date_picker_group .date_divider {
    font-size: 20px;
    font-weight: 700;
    color: #868e96;
    padding-top: 30px;
}

/* --- 📌 게시판 보기 (Board View) --- */
#bo_v {
    padding: 20px 0;
    max-width: 900px;
    margin: 0 auto;
}
#bo_v h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}
#bo_v_title {
    font-size: 32px;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 20px;
    line-height: 1.4;
    word-break: keep-all;
}

#bo_v_info {
    display: flex;
    align-items: center;
    gap: 20px;
    padding-bottom: 25px;
    margin-bottom: 35px;
    border-bottom: 1px solid #e9ecef;
    font-size: 14px;
    color: #868e96;
}

#bo_v_info h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}
#bo_v_info strong {
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

#bo_v_info span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

#bo_v_atc {
    padding-bottom: 50px;
    margin-bottom: 50px;
    border-bottom: 1px solid #e9ecef;
}

#bo_v_atc h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

#bo_v_main_visual {
    margin-bottom: 40px;
    border-radius: 12px;
    overflow: hidden;
    background-color: #000;
}

#bo_v_main_visual img, #bo_v_main_visual video {
    display: block;
    width: 100%;
    height: auto;
}

#bo_v_con {
    line-height: 1.8;
    font-size: 16px;
    color: var(--text-color);
    min-height: 100px;
}

#bo_v_con img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 20px 0;
}

#bo_v_gallery {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid #e9ecef;
}

#bo_v_gallery h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.gallery_grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
}

.gallery_grid a {
    display: block;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    background-color: #f8f9fa;
    aspect-ratio: 1 / 1;
}

.gallery_grid a:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.gallery_grid img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery_item_other {
    background-color: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    aspect-ratio: 1 / 1;
}

.view_file_link {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
}

.view_file_link .fa { margin-right: 8px; }

#bo_v_bot { margin-bottom: 60px; }

#bo_v_bot .btn_area {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 30px;
}

#bo_v_bot a, #bo_v_bot button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 700;
    font-size: 15px;
    transition: all 0.3s ease;
    border: 1px solid;
    cursor: pointer;
}

#bo_v_bot .btn_b01 {
    background-color: #6c757d;
    color: var(--white-color);
    border-color: #6c757d;
}

#bo_v_bot .btn_b02 {
    background-color: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
}

#bo_v_bot .btn_b01:hover { background-color: #5a6268; }
#bo_v_bot .btn_b02:hover { background-color: var(--secondary-color); }

/* --- 📌 [통합] 이미지 라이트박스 스타일 --- */
.image_lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s;
}

.lightbox_content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    animation: zoomIn 0.3s;
}

.lightbox_close {
    position: absolute;
    top: 20px;
    right: 40px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.lightbox_close:hover { color: #bbb; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes zoomIn {
    from { transform: scale(0.8); }
    to { transform: scale(1); }
}

/* --- 📌 반응형 스타일 --- */
@media (max-width: 768px) {
    .bo-list-bottom-wrapper {
        display: flex;
        flex-direction: column;
        gap: 30px;
        margin-top: 20px;
    }

    .bo-pagination,
    .bo-search-box {
        margin-top: 0;
    }

    .bo-search-box { padding: 15px; }

    .bo-search-box form {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .bo-search-box .sch-input { width: 100%; }

    .date_picker_group {
        flex-direction: column;
        align-items: stretch;
        gap: 20px;
    }

    .date_picker_group .date_divider {
        padding-top: 0;
        text-align: center;
        transform: rotate(90deg);
        margin: -5px 0;
    }
}

/* 💡 [추가] 뷰 모드 전환 스타일 */
#bo_list_body[data-view-mode="card"] .list-view { display: none; }
#bo_list_body[data-view-mode="card"] .bo-card-item { display: flex; } /* 카드형 아이템 보이기 */

#bo_list_body[data-view-mode="list"] .bo-card-item { display: none; } /* 카드형 아이템 숨기기 */
#bo_list_body[data-view-mode="list"] .bo-list-item { display: flex; } /* 목록형 아이템 보이기 */

/* 기본값 (JS 로드 전 깜빡임 방지) */
.bo-card-item, .bo-list-item { display: none; }

/* 💡 [추가] 수정/삭제 버튼 스타일 */
.btn-action {
    display: inline-block;
    padding: 4px 12px;
    font-size: 13px;
    font-weight: 700;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid transparent;
    white-space: nowrap;
    cursor: pointer;
}

.btn-action.btn-modify {
    background-color: #f8f9fa;
    color: #495057;
    border-color: #dee2e6;
}

.btn-action.btn-modify:hover {
    background-color: #e9ecef;
}

.btn-action.btn-delete {
    background-color: #fff5f5;
    color: #e53e3e;
    border-color: #f5c6cb;
}

.btn-action.btn-delete:hover {
    background-color: #fed7d7;
}

/* 버튼 그룹 간격 조정 */
.action-group {
    display: flex;
    gap: 5px;
}

/* 💡 [추가] 카드형 리스트 그리드 스타일 */
#bo_list_body[data-view-mode="card"] {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* PC: 4개 고정 */
    gap: 20px;
}

/* 카드형 아이템 스타일 */
.bo-card-item {
    flex-direction: column; /* 세로 정렬 */
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative; /* 체크박스 위치 기준 */
}

.bo-card-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.card-thumbnail {
    position: relative;
    padding-top: 65%; /* 썸네일 비율 */
    overflow: hidden;
    background: #f9f9f9;
}

.card-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-content-preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
    color: #888;
    font-size: 14px;
}

.card-info {
    padding: 15px;
}

.card-subject {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-status-wrapper {
    margin-top: 10px;
}

.card-actions {
    padding: 10px 15px;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 💡 [추가] 카드형 체크박스 스타일 */
.card-chk {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 10;
}

/* 반응형 처리 */
@media (max-width: 1200px) {
    #bo_list_body[data-view-mode="card"] { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
    #bo_list_body[data-view-mode="card"] { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    #bo_list_body[data-view-mode="card"] { grid-template-columns: 1fr; }
}

/* 💡 [추가] 커스텀 체크박스 스타일 */
.option_group input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.option_group .custom-checkbox {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #ced4da;
    border-radius: 4px; /* 라디오와 구분되게 사각형으로 */
    background-color: #fff;
    transition: all 0.2s ease;
    flex-shrink: 0;
    position: relative;
}

.option_group label:hover .custom-checkbox {
    border-color: var(--secondary-color);
}

.option_group input[type="checkbox"]:checked + .custom-checkbox {
    border-color: var(--primary-color);
    background-color: var(--primary-color);
}

.option_group input[type="checkbox"]:focus-visible + .custom-checkbox {
    box-shadow: 0 0 0 3px rgba(44, 62, 80, 0.2);
}

.option_group .custom-checkbox::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 1px;
    width: 6px;
    height: 11px;
    border: solid white;
    border-width: 0 3px 3px 0;
    transform: rotate(45deg) scale(0);
    opacity: 0;
    transition: all 0.2s ease-in-out;
}

.option_group input[type="checkbox"]:checked + .custom-checkbox::after {
    transform: rotate(45deg) scale(1);
    opacity: 1;
}

.option_group input[type="checkbox"]:disabled + .custom-checkbox {
    background-color: #e9ecef;
    border-color: #dee2e6;
    cursor: not-allowed;
}

.option_group input[type="checkbox"]:disabled:checked + .custom-checkbox {
    background-color: #adb5bd;
    border-color: #adb5bd;
}

.option_group input[type="checkbox"]:disabled:checked + .custom-checkbox::after {
    border-color: #fff;
}