/* ===== Page Hero ===== */
.page-hero {
    background: var(--color-navy);
    padding: 160px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(247,148,29,0.1) 0%, transparent 70%);
}

.page-hero .container { position: relative; z-index: 1; }

.page-hero-label {
    display: inline-block;
    color: var(--color-orange);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.page-hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    color: var(--color-white);
    margin-bottom: 16px;
}

.page-hero-sub {
    color: rgba(255,255,255,0.6);
    font-size: 1rem;
}

/* ===== ブログ一覧 ===== */
.blog-section {
    padding: 80px 0 120px;
    background: var(--color-bg);
}

/* カテゴリーフィルター */
.blog-filter {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 8px 22px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text-muted);
    background: var(--color-white);
    border: 1.5px solid #e0e0e0;
    text-decoration: none;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-orange);
    border-color: var(--color-orange);
    color: var(--color-white);
}

/* 記事グリッド */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 60px;
}

.blog-card {
    background: var(--color-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.12);
}

.blog-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.blog-card-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--color-navy);
}

.blog-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.blog-card:hover .blog-card-thumb img {
    transform: scale(1.05);
}

.blog-card-no-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-navy), #1a3a5c);
}

.blog-card-no-image span {
    color: rgba(255,255,255,0.2);
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 0.1em;
}

.blog-card-cat {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--color-orange);
    color: var(--color-white);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 50px;
}

.blog-card-body {
    padding: 24px;
}

.blog-card-date {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    display: block;
    margin-bottom: 10px;
}

.blog-card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-excerpt {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ページネーション */
.blog-pagination .nav-links {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.blog-pagination .page-numbers {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--color-text);
    background: var(--color-white);
    border: 1.5px solid #e0e0e0;
    transition: var(--transition);
}

.blog-pagination .page-numbers.current,
.blog-pagination .page-numbers:hover {
    background: var(--color-orange);
    border-color: var(--color-orange);
    color: var(--color-white);
}

.blog-pagination .page-numbers.prev,
.blog-pagination .page-numbers.next {
    width: auto;
    padding: 0 16px;
}

.blog-empty {
    text-align: center;
    padding: 80px 0;
    color: var(--color-text-muted);
    font-size: 1rem;
}

/* ===== 個別記事 ===== */
.single-hero {
    background: var(--color-navy);
    padding: 160px 0 80px;
    position: relative;
    overflow: hidden;
}

.single-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(247,148,29,0.08) 0%, transparent 70%);
}

.single-hero .container { position: relative; z-index: 1; }

.single-cat {
    display: inline-block;
    background: var(--color-orange);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 5px 16px;
    border-radius: 50px;
    text-decoration: none;
    margin-bottom: 20px;
}

.single-title {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 900;
    color: var(--color-white);
    line-height: 1.4;
    margin-bottom: 20px;
    max-width: 800px;
}

.single-meta {
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
}

/* 記事本文エリア */
.single-section {
    padding: 80px 0 120px;
    background: var(--color-bg);
}

.single-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 60px;
    align-items: start;
}

.single-thumbnail {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 40px;
}

.single-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}

/* 記事本文スタイル */
.single-body {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 48px;
    box-shadow: var(--shadow);
    line-height: 1.9;
    color: var(--color-text);
    margin-bottom: 32px;
}

.single-body h2 {
    font-size: 1.4rem;
    font-weight: 900;
    margin: 40px 0 16px;
    padding-left: 16px;
    border-left: 4px solid var(--color-orange);
    color: var(--color-text);
}

.single-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 32px 0 12px;
    color: var(--color-text);
}

.single-body p {
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.single-body ul,
.single-body ol {
    margin: 0 0 20px 24px;
    font-size: 0.95rem;
}

.single-body li {
    margin-bottom: 8px;
    line-height: 1.7;
}

.single-body a {
    color: var(--color-orange);
    text-decoration: underline;
}

.single-body img {
    max-width: 100%;
    border-radius: 8px;
    margin: 20px 0;
}

.single-body code {
    background: #f4f4f4;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.88em;
    font-family: monospace;
}

.single-body pre {
    background: #1e1e2e;
    color: #cdd6f4;
    padding: 24px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 24px;
    font-size: 0.88rem;
    line-height: 1.7;
}

.single-body blockquote {
    border-left: 4px solid #e0e0e0;
    padding: 12px 24px;
    margin: 24px 0;
    color: var(--color-text-muted);
    font-style: italic;
}

/* タグ */
.single-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.single-tag {
    background: var(--color-white);
    border: 1.5px solid #e0e0e0;
    padding: 5px 14px;
    border-radius: 50px;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.single-tag:hover {
    border-color: var(--color-orange);
    color: var(--color-orange);
}

/* 前後の記事 */
.single-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 32px;
}

.single-nav-prev a,
.single-nav-next a {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 20px;
    background: var(--color-white);
    border-radius: var(--radius);
    text-decoration: none;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.single-nav-next a { text-align: right; }

.single-nav-prev a:hover,
.single-nav-next a:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.1);
}

.nav-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-orange);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-title {
    font-size: 0.88rem;
    color: var(--color-text);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.single-back {
    text-align: center;
}

/* ===== サイドバー ===== */
.single-sidebar {
    display: flex;
    flex-direction: column;
    gap: 28px;
    position: sticky;
    top: 100px;
}

.sidebar-widget {
    background: var(--color-white);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
}

.sidebar-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-orange);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(247,148,29,0.2);
}

.sidebar-post {
    display: block;
    text-decoration: none;
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    transition: var(--transition);
}

.sidebar-post:last-child { border-bottom: none; }

.sidebar-post:hover p { color: var(--color-orange); }

.sidebar-post time {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    display: block;
    margin-bottom: 4px;
}

.sidebar-post p {
    font-size: 0.85rem;
    color: var(--color-text);
    line-height: 1.5;
    transition: color 0.2s;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.sidebar-cat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
    text-decoration: none;
    font-size: 0.88rem;
    color: var(--color-text);
    transition: color 0.2s;
}

.sidebar-cat:last-child { border-bottom: none; }
.sidebar-cat:hover { color: var(--color-orange); }

.sidebar-cat span {
    background: var(--color-bg);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 50px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .blog-grid { grid-template-columns: 1fr; }
    .single-layout { grid-template-columns: 1fr; }
    .single-sidebar { position: static; }
    .single-body { padding: 28px 24px; }
    .single-nav { grid-template-columns: 1fr; }
    .single-nav-next a { text-align: left; }
}