/* 게시판형(목록/상세) 서브페이지 공용 스타일: archive-forum-list, archive-exhibition-list/-item, archive-cooperation, research */

.board-section {
    padding: 0 0 var(--sub-section-block);
}

.board-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.board-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--sub-line);
    border-radius: 16px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.03);
    overflow: hidden;
    background: var(--sub-white);
    color: inherit;
    text-decoration: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.board-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    border-color: rgba(17, 17, 17, 0.2);
}

.board-card__media {
    aspect-ratio: 4 / 3;
    background: var(--sub-cream);
    overflow: hidden;
}

.board-card__media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.board-card__body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px;
    min-width: 0;
}

.board-card__date {
    font-size: 13px;
    font-weight: 700;
    color: var(--sub-muted);
    letter-spacing: 0.02em;
}

.board-card__title {
    margin: 0;
    font-size: 19px;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -0.02em;
    color: var(--sub-black);
    word-break: keep-all;
    overflow-wrap: break-word;
}

.board-card__summary {
    margin: 0;
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--sub-gray);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    word-break: keep-all;
}

.board-card__arrow {
    margin-top: auto;
    align-self: flex-end;
    color: var(--sub-red);
}

.board-empty {
    grid-column: 1 / -1;
    padding: 96px 24px;
    text-align: center;
    color: var(--sub-muted);
    font-size: 16px;
    border: 1px dashed var(--sub-line);
    border-radius: 16px;
}

/* 상세(게시글) */

.board-post {
    max-width: 860px;
}

.board-post__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 14px;
    font-weight: 700;
    color: var(--sub-muted);
}

.board-post__title {
    margin: 0 0 32px;
    font-size: clamp(28px, 3vw, 40px);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.03em;
    color: var(--sub-black);
    word-break: keep-all;
}

.board-post__media {
    margin-bottom: 32px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--sub-line);
}

.board-post__media img {
    display: block;
    width: 100%;
    height: auto;
}

.board-post__body {
    font-size: var(--sub-body-size);
    line-height: 1.8;
    color: var(--sub-black);
    word-break: keep-all;
    min-height: 120px;
}

.board-post__body:empty::before,
.board-post__body--empty {
    content: none;
}

.board-post__empty {
    padding: 48px 0;
    color: var(--sub-muted);
    border-top: 1px solid var(--sub-line);
    border-bottom: 1px solid var(--sub-line);
}

.board-post__back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 48px;
    font-size: 15px;
    font-weight: 700;
    color: var(--sub-black);
    text-decoration: none;
}

.board-post__back:hover {
    color: var(--sub-red);
}

/* 태블릿 (~1320px) */
@media (max-width: 1320px) {
    .board-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}

/* 모바일 (~500px) */
@media (max-width: 500px) {
    .board-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .board-empty {
        padding: 64px 20px;
    }
}