/* アイテム詳細ページ専用 (store/item/detail.php) */
.item-detail-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 var(--padding-container);
}
.item-detail-main {
    display: grid;
    grid-template-columns: 50% 50%;
    gap: 40px;
    margin-bottom: 60px;
}
.item-images {
    position: relative;
}
.item-image-main-wrapper {
    width: 100%;
    margin-bottom: 15px;
    position: relative;
    overflow: hidden;
    border-radius: 10px;
}
.item-image-main {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 10px;
    background: var(--secondary-color);
    display: block;
    user-select: none;
    touch-action: pan-y;
}
.item-image-thumbnails {
    display: flex;
    gap: var(--padding-md);
    overflow-x: auto;
    padding: var(--padding-md) 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}
.item-image-thumbnails::-webkit-scrollbar {
    height: 6px;
}
.item-image-thumbnails::-webkit-scrollbar-track {
    background: var(--secondary-color);
    border-radius: 3px;
}
.item-image-thumbnails::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}
.item-image-thumbnail {
    width: 80px;
    height: 80px;
    min-width: 80px;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 5px;
    cursor: pointer;
    border: 2px solid transparent;
    flex-shrink: 0;
    transition: border-color 0.2s;
}
.item-image-thumbnail:hover {
    border-color: var(--primary-color);
}
.item-image-thumbnail.active {
    border-color: var(--primary-color);
    border-width: 2px;
}
.item-info h1 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-color);
}
.item-price {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}
.item-price-tax {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 30px;
}
.item-tags {
    margin-bottom: 20px;
}
.item-tag {
    display: inline-block;
    padding: var(--padding-tag);
    background: var(--secondary-color);
    border-radius: 5px;
    font-size: 12px;
    margin-right: 5px;
    margin-bottom: 5px;
}
.item-stock {
    font-size: 16px;
    margin-bottom: 30px;
    padding: var(--padding-card);
    background: var(--secondary-color);
    border-radius: 5px;
}
.item-stock.in-stock {
    color: var(--success-color);
}
.item-stock.out-of-stock {
    color: var(--error-color);
}
.item-description {
    margin-bottom: 30px;
    line-height: 1.8;
}
.item-description h2 {
    font-size: 20px;
    margin-bottom: 15px;
    padding-bottom: var(--padding-block);
    border-bottom: 2px solid var(--primary-color);
}
.item-actions {
    display: flex;
    gap: 15px;
}
.item-actions .btn {
    flex: 1;
    padding: var(--padding-btn-lg);
    font-size: 16px;
}
.item-specs {
    margin-top: var(--padding-section-y);
    padding-top: var(--padding-section-y);
    border-top: 1px solid var(--border-color);
}
.item-specs table {
    width: 100%;
    border-collapse: collapse;
}
.item-specs th,
.item-specs td {
    padding: var(--padding-cell);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
.item-specs th {
    background: var(--secondary-color);
    font-weight: bold;
    width: 150px;
}

/* おすすめアイテムセクション */
.recommendations-section {
    margin-top: 60px;
}
.recommendations-section h2 {
    font-size: 24px;
    margin-bottom: 30px;
    padding-bottom: var(--padding-block);
    border-bottom: 2px solid var(--primary-color);
}
.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}
.recommendation-item {
    background: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}
.recommendation-item:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
.recommendation-item a {
    text-decoration: none;
    color: inherit;
    display: block;
}
.recommendation-item-image {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
}
.recommendation-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.recommendation-item-body {
    padding: var(--padding-card);
}
.recommendation-item-reason {
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 5px;
}
.recommendation-item-name {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 8px;
    line-height: 1.4;
    height: 2.8em;
    overflow: hidden;
}
.recommendation-item-price {
    font-size: 16px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
}
.recommendation-item .btn {
    width: 100%;
    padding: var(--padding-btn-sm);
    font-size: 14px;
}

@media (max-width: 768px) {
    .item-detail-main {
        grid-template-columns: 100%;
        gap: 30px;
    }
    .item-images {
        width: 100%;
    }
    .item-info {
        width: 100%;
    }
    .item-actions {
        flex-direction: column;
    }
    .recommendations-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
}