/* ==========================================================================
   自作画像ギャラリースライダー（外部ライブラリ不使用）
   ========================================================================== */
.board-media-slider {
    position: relative;
    margin: 0 auto;
    overflow: hidden;
    width: min(100%, 650px);
    max-width: 650px;
    padding-bottom: 35px;
}

/* 画像を横一列に並べるためのコンテナ */
.board-media-slider .slider-wrapper {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
    width: 100%;
    transition: transform 0.4s ease-in-out;
}

/* 各スライド（画像1枚ずつの枠） */
.board-media-slider .slider-slide {
    display: flex;
    flex: 0 0 100%;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 100%;
}

.board-media-slider .slider-slide img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: min(70vh, 450px);
    display: block;
}

/* 左右の矢印ボタンの共通スタイル */
.board-media-slider .slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.4);
    color: #ffffff;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
    transition: background 0.2s;
}
.board-media-slider .slider-arrow:hover {
    background: rgba(0, 0, 0, 0.7);
}
.board-media-slider .slider-prev { left: 8px; }
.board-media-slider .slider-next { right: 8px; }

/* 下部ドット（ページネーション）のスタイル */
.board-media-slider .slider-pagination {
    position: absolute;
    bottom: 12px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 8px;
    z-index: 20;
}
.board-media-slider .slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #cccccc;
    cursor: pointer;
    transition: background 0.2s;
}
/* 現在表示されている画像に対応するドットの見た目 */
.board-media-slider .slider-dot.is-active {
    background: #333333;
}

/* ==========================================
   レスポンシブ対応（スマートフォン向け）
   ========================================== */
@media (max-width: 768px) {
    .board-media-slider .slider-arrow {
        box-sizing: border-box;
        width: 28px;
        height: 28px;
        min-width: 0;
        min-height: 0;
        padding: 0;
        font-size: 12px;
    }

    .board-media-slider .slider-prev {
        left: 4px;
    }

    .board-media-slider .slider-next {
        right: 4px;
    }
}

.board-thumbnail-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: min(100%, 650px);
    max-width: 650px;
    height: auto;
    margin: 0 auto;
    padding: 0 !important;
    padding-top: 0 !important;
    overflow: visible;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
}

.board-media-section--single-image .board-thumbnail-wrapper {
    padding: 0 !important;
    min-height: 0;
    aspect-ratio: auto;
    margin-top: 16px;
}

.board-thumbnail-wrapper img.board-single-thumbnail {
    position: static;
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: min(70vh, 450px);
    margin: 0 auto;
    object-fit: initial;
    aspect-ratio: auto;
}

.board-media-section--single-image {
    margin-bottom: 16px;
}

.board-media-section--single-image + .board-message-section .board-message-text {
    margin-top: 0;
}