/* ============================================================
   アーカイブ・カテゴリ・タグ・検索結果 カードスタイル
   front-rebuild.css のデザイン言語を踏襲（pages.css 非依存）
   ============================================================ */

/* ── セクション ── */
.arc-section {
    padding: 48px 20px 80px;
}

.arc-section__inner {
    max-width: var(--hg-page-max);
    margin: 0 auto;
}

/* ── 検索バー ── */
.arc-search {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--hg-card);
    border: 1px solid var(--hg-border);
    border-radius: 50px;
    padding: 6px 6px 6px 18px;
    max-width: 600px;
    margin: 0 auto 32px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.arc-search:focus-within {
    border-color: var(--hg-accent-dark);
    box-shadow: 0 0 0 3px rgba(214, 242, 91, 0.25);
}

.arc-search__icon {
    font-size: 22px;
    color: var(--hg-muted);
    flex-shrink: 0;
}

.arc-search__input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 0.95rem;
    padding: 8px 12px;
    font-family: var(--hg-font-ja);
    color: var(--hg-ink);
    min-width: 0;
}

.arc-search__input::placeholder {
    color: var(--hg-muted);
}

.arc-search__btn {
    flex-shrink: 0;
    background: var(--hg-accent);
    color: var(--hg-ink);
    font-weight: 700;
    font-size: 0.88rem;
    font-family: var(--hg-font-ja);
    border: none;
    border-radius: 50px;
    padding: 10px 24px;
    cursor: pointer;
    transition: background 0.2s;
}

.arc-search__btn:hover {
    background: var(--hg-accent-dark);
    color: #fff;
}

.arc-search__scope {
    margin-top: 8px;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: var(--hg-ink-light, #666);
}

.arc-search__scope a {
    color: var(--hg-accent);
    text-decoration: underline;
    margin-left: 0.5em;
}

.arc-search__scope a:hover {
    color: var(--hg-accent-dark);
}

/* ── 記事グリッド ── */
.arc-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

/* ── 投稿カード ── */
.arc-card {
    background: var(--hg-card);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: transform 0.25s, box-shadow 0.25s;
}

.arc-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.10);
}

.arc-card__link {
    display: block;
    text-decoration: none;
    color: inherit;
    height: 100%;
}

.arc-card__thumb {
    position: relative;
    margin: 0;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--hg-surface);
}

.arc-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s;
}

.arc-card:hover .arc-card__thumb img {
    transform: scale(1.05);
}

.arc-card__body {
    padding: 18px 20px 22px;
}

.arc-card__date {
    font-family: var(--hg-font-en);
    font-size: 0.78rem;
    color: var(--hg-muted);
    letter-spacing: 0.04em;
}

.arc-card__cat {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 10px;
    font-size: 0.72rem;
    font-weight: 700;
    border-radius: 50px;
    background: var(--hg-accent);
    color: var(--hg-ink);
    vertical-align: middle;
}

.arc-card__title {
    margin: 10px 0 0;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.55;
    color: var(--hg-ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.arc-card__excerpt {
    margin: 8px 0 0;
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--hg-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ── ページネーション ── */
.arc-section .nav-links {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 48px;
}

.arc-section .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 10px;
    border: 1px solid var(--hg-border);
    border-radius: 8px;
    font-family: var(--hg-font-en);
    font-size: 0.9rem;
    color: var(--hg-ink);
    text-decoration: none;
    background: var(--hg-card);
    transition: all 0.2s;
}

.arc-section .page-numbers:hover {
    border-color: var(--hg-accent-dark);
    color: var(--hg-accent-dark);
}

.arc-section .page-numbers.current {
    background: var(--hg-accent);
    border-color: var(--hg-accent);
    color: var(--hg-ink);
    font-weight: 700;
}

/* ── content-none 検索フォームスタイル上書き ── */
.no-results .search-form {
    display: flex;
    justify-content: center;
    margin-top: 20px;
}

/* ── レスポンシブ ── */
@media (max-width: 991px) {
    .arc-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 575px) {
    .arc-section {
        padding: 32px 16px 60px;
    }

    .arc-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .arc-search {
        max-width: 100%;
    }

    .arc-search__btn {
        padding: 10px 16px;
        font-size: 0.82rem;
    }

}