/* news.css (修正版) */

/* ========== PC向け基本スタイル========== */
.page-wrapper { padding-top: 40px; padding-bottom: 80px; }
.main-layout { display: grid; grid-template-columns: 1fr 300px; gap: 60px; }
.article-list { list-style: none; padding: 0; margin: 0; }
.article-item { display: flex; gap: 30px; padding-bottom: 40px; margin-bottom: 40px; border-bottom: 1px solid var(--color-border); }
.article-item:last-child { border-bottom: none; margin-bottom: 0; }
.article-thumbnail { flex: 0 0 240px; }
.article-thumbnail img { width: 100%; height: 100%; object-fit: cover; background-color: #f0f0f0; }
.article-body .meta { display: flex; align-items: center; gap: 15px; font-size: 13px; margin-bottom: 10px; }
.article-body .tag { background-color: #f0f0f0; padding: 2px 10px; border-radius: 4px; font-size: 12px; }
.article-body h2 { font-size: 20px; margin: 0 0 15px 0; line-height: 1.6; }
.article-body p { font-size: 14px; line-height: 1.9; margin: 0 0 25px 0; }

/* ========== お知らせ一覧 (下層ページ用) ========== */
.news-list-archive {
    list-style: none;
    padding: 0;
    margin: 0;
}
.news-item {
    border-bottom: 1px solid #ddd;
    padding-bottom: 40px;
    margin-bottom: 40px;
}
.news-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}
.news-item-link {
    display: flex;
    gap: 30px;
    color: #000;
    text-decoration: none;
}
.news-item-link:hover {
    opacity: 0.8;
}
.news-item-image {
    width: 240px;
    flex-shrink: 0;
}
.news-item-image img {
    object-fit: cover;
    width: 100%;
    height: 100%; /* 親要素に対して100%で表示 */
    display: block;
}
.news-item-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.news-item-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 10px;
    font-size: 0.875rem;
}
.news-item-meta time {
    font-weight: normal;
}
.news-item-meta time + span {
    background: #f5f5f5;
    padding: 0 1em;
    border-radius: 25px;
    font-size: 11px;
}
.news-item-title {
    font-size: 1.25rem;
    font-weight: bold;
    line-height: 1.6;
    margin: 0 0 10px;
}
.news-item-brand {
    font-size: 12px;
    text-align: right;
    margin: 0 0.5em 0.5em 0;
}
.news-item-excerpt {
    margin: 0 0 20px;
    font-size: 0.9rem;
    line-height: 1.8;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
    flex-grow: 1;
}
/* 抜粋文が空の場合に余白ができないようにする */
.news-item-excerpt:empty {
    display: none;
}
.btn.btn-dark {
    background-color: #000;
    color: #fff;
    align-self: flex-start;
    padding: 8px 30px;
    font-weight: normal;
    text-decoration: none;
    display: inline-block;
    transition: opacity 0.3s;
}
.btn.btn-dark:hover {
    opacity: 0.8;
}

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

/* タブレットサイズ (〜992px) での調整 */
@media (max-width: 992px) {
    .main-layout { grid-template-columns: 1fr; gap: 50px; }
    .sidebar { order: 2; }
    .content-area { order: 1; }

    .news-item-link {
        gap: 20px;
    }
    .news-item-image {
        width: 200px;
    }
}

/* スマートフォンサイズ (〜768px) での調整 */
@media (max-width: 768px) {
    .page-wrapper { padding: 30px 15px 60px; }
    .main-layout { padding: 0; }

    /* news.cssのリスト */
    .article-item { flex-direction: column; }
    .article-thumbnail { flex-basis: auto; height: 200px; }
    .article-body h2 { font-size: 18px; }

    /* お知らせ一覧 */
    .news-item {
        padding-bottom: 30px;
        margin-bottom: 30px;
    }
    .news-item-link {
        flex-direction: column; /* ★修正点: 縦並びにする */
        gap: 20px;
    }
    .news-item-image {
        width: 100%;
        /* ★修正点: 画像の縦横比を16:9に固定します。これで高さが制御されます */
        aspect-ratio: 16 / 9;
    }
    .news-item-title {
        font-size: 1.125rem; /* 約18px */
    }
    .news-item-excerpt {
        -webkit-line-clamp: 2; /* スマホでは省略を2行に */
    }
    .btn.btn-dark {
        padding: 10px 30px;
    }
}