/* ==========================================================================
   カテゴリ一覧ページ CSS (category-list.css)
   ========================================================================== */

/* コンテナ */
.category-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--theme-spacing-md);
    background-color: var(--theme-bg-base);
}

/* ヘッダー */
.category-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

.category-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--theme-text-primary);
    margin-bottom: 0.5rem;
}

.category-description {
    color: var(--theme-text-secondary);
    font-size: 1rem;
}

/* グリッドレイアウト */
.article-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .article-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

@media (min-width: 1024px) {
    .article-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 記事カード */
.article-list-card {
    display: flex;
    flex-direction: column;
    background-color: var(--theme-bg-white);
    border-radius: var(--theme-radius-md);
    box-shadow: var(--theme-shadow-card);
    transition: transform var(--theme-transition), box-shadow var(--theme-transition);
    text-decoration: none;
    overflow: hidden;
    height: 100%;
    position: relative;
}

.article-list-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--theme-shadow-card-hover);
}

.article-list-card__media {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: #f0f0f0;
    overflow: hidden;
}

.article-list-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.article-list-card:hover .article-list-card__image {
    transform: scale(1.05);
}

.article-list-card__placeholder {
    width: 100%;
    height: 100%;
    background-color: #eee;
}

.article-list-card__category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    color: var(--theme-accent-dusty-pink);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.article-list-card__content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-list-card__meta {
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
    color: var(--theme-text-muted);
}

.article-list-card__title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--theme-text-primary);
    line-height: 1.4;
    margin: 0 0 0.75rem 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-list-card__excerpt {
    font-size: 0.9rem;
    color: var(--theme-text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.article-list-card__more {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--theme-link-color);
}

.article-list-card:hover .article-list-card__more {
    color: var(--theme-link-hover);
}

/* インフィード広告 */
.ad-infeed {
    grid-column: 1 / -1; /* 全幅表示 */
    background-color: var(--theme-bg-white);
    border-radius: var(--theme-radius-md);
    padding: 1.5rem;
    text-align: center;
    border: 1px dashed #e0e0e0;
}

.ad-label {
    display: block;
    font-size: 0.7rem;
    color: #aaa;
    margin-bottom: 0.5rem;
}

.ad-placeholder-box {
    width: 100%;
    height: 250px;
    background-color: #f8f8f8;
    margin: 0 auto;
}

@media (min-width: 1024px) {
    /* デスクトップでは広告もカードサイズでグリッドに馴染ませる場合は grid-column 指定を外す */
    /* ここでは全幅のままにする */
}

/* モバイル向け最適化 (レスポンシブ) */
@media (max-width: 639px) {
    .category-container {
        padding: 1rem;
    }

    .category-header {
        margin-bottom: 1.5rem;
        padding: 1rem 0;
    }

    .category-title {
        font-size: 1.6rem;
    }
    
    .category-description {
        font-size: 0.9rem;
    }

    .article-grid {
        gap: 1rem;
    }

    .article-list-card__content {
        padding: 1rem;
    }

    .article-list-card__title {
        font-size: 1.05rem;
        margin-bottom: 0.5rem;
        /* タイトルは最大3行まで表示 */
        -webkit-line-clamp: 3;
    }

    .article-list-card__excerpt {
        /* スマホでは抜粋を非表示にしてスッキリさせる */
        display: none;
    }

    .article-list-card__more {
        margin-top: 0.5rem;
        font-size: 0.85rem;
    }
    
    .ad-placeholder-box {
        height: 200px; /* スマホでは広告高さを少し抑える */
    }
}