/**
 * Related Posts Styles
 * 関連記事のスタイル
 *
 * @package Forgeee
 * @since 1.0.0
 */

/* ==========================================================================
   基本スタイル
   ========================================================================== */

.fg-related-posts {
    margin: 60px 0;
}

.fg-related-posts-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
}

/* コンテンツ幅 */
.fg-related-posts--content {
    max-width: var(--fg-container-width, 1280px) !important;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--fg-content-padding, 20px);
    padding-right: var(--fg-content-padding, 20px);
}

/* 全幅 */
.fg-related-posts--full {
    width: 100%;
    padding-left: var(--fg-content-padding, 20px);
    padding-right: var(--fg-content-padding, 20px);
}

/* ==========================================================================
   グリッドレイアウト
   ========================================================================== */

.fg-related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

/* ==========================================================================
   スライダーレイアウト
   ========================================================================== */

.fg-related-posts-slider {
    position: relative;
    overflow: hidden;
}

.fg-related-posts-slider .fg-related-post-item {
    flex-shrink: 0;
}

/* Swiper対応 */
.fg-related-posts-slider.swiper {
    padding-bottom: 40px;
}

.fg-related-posts-slider .swiper-wrapper {
    display: flex;
}

.fg-related-posts-slider .swiper-slide {
    height: auto;
}

/* ==========================================================================
   関連記事アイテム
   ========================================================================== */

.fg-related-post-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.fg-related-post-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

/* サムネイル */
.fg-related-post-thumbnail {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    overflow: hidden;
    background: #f0f0f0;
}

.fg-related-post-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.fg-related-post-item:hover .fg-related-post-thumbnail img {
    transform: scale(1.05);
}

/* オーバーレイ */
.fg-related-post-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 100%);
    padding: 20px;
    color: #fff;
    display: flex;
    align-items: flex-end;
}

.fg-related-post-overlay .fg-related-post-title {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* コンテンツ（画像がない場合） */
.fg-related-post-content {
    padding: 20px;
}

.fg-related-post-content .fg-related-post-title {
    margin: 0 0 10px 0;
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
}

.fg-related-post-content .fg-related-post-title a {
    color: var(--fg-text-color, #333);
    text-decoration: none;
    transition: color 0.3s ease;
}

.fg-related-post-content .fg-related-post-title a:hover {
    color: var(--fg-primary-color, #0073aa);
}

.fg-related-post-meta {
    font-size: 0.875rem;
    color: #666;
}

.fg-related-post-date {
    color: #666;
}

/* ==========================================================================
   スライダーナビゲーション
   ========================================================================== */

.fg-related-posts-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.fg-related-posts-nav-button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid #ddd;
    background: #fff;
    color: #333;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.fg-related-posts-nav-button:hover {
    background: var(--fg-primary-color, #0073aa);
    color: #fff;
    border-color: var(--fg-primary-color, #0073aa);
}

.fg-related-posts-nav-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Swiperナビゲーション */
.fg-related-posts-slider .swiper-button-next,
.fg-related-posts-slider .swiper-button-prev {
    color: var(--fg-primary-color, #0073aa);
    width: 40px;
    height: 40px;
    margin-top: -20px;
}

.fg-related-posts-slider .swiper-button-next:after,
.fg-related-posts-slider .swiper-button-prev:after {
    font-size: 20px;
}

.fg-related-posts-slider .swiper-pagination {
    position: relative;
    margin-top: 20px;
}

.fg-related-posts-slider .swiper-pagination-bullet {
    background: var(--fg-primary-color, #0073aa);
}

/* ==========================================================================
   レスポンシブ対応
   ========================================================================== */

@media (max-width: 768px) {
    .fg-related-posts-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .fg-related-posts-title {
        font-size: 1.25rem;
        margin-bottom: 20px;
    }
    
    .fg-related-post-overlay {
        padding: 15px;
    }
    
    .fg-related-post-overlay .fg-related-post-title {
        font-size: 1rem;
    }
    
    .fg-related-post-content {
        padding: 15px;
    }
}