@import 'color-palette.css';

/* Anaba OffJapan UI コンポーネント */

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
}

.btn:hover {
    opacity: 0.9;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
}

.btn-secondary {
    background-color: var(--secondary-gray);
    color: var(--white);
}

/* Cards */
.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: 0.25rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.card-header {
    padding: 0.75rem 1.25rem;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
}

.card-body {
    padding: 1.25rem;
}

/* Forms */
.form-control {
    display: block;
    width: 100%;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-medium);
    border-radius: 0.25rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.25);
}

/* Navigation */
.nav {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-item {
    margin: 0 0.5rem;
}

.nav-link {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-link:hover {
    color: var(--primary-blue);
}

/* Alerts */
.alert {
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border-color: #ffeeba;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.focus-visible:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* 地図コンテナ */
.map-container {
    margin: 30px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-radius: 10px;
    overflow: hidden;
}

.map-container iframe {
    border: 0;
}

/* 写真セクション */
.real-photo-section {
    margin: 40px 0;
}

.real-photo-section figure {
    margin: 0;
}

.real-photo-section img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.real-photo-section figcaption {
    text-align: center;
    color: #666;
    font-size: 14px;
    margin-top: 10px;
}

/* ==========================================================================
   Article Page Styles
   ========================================================================== */

/* --- Article Header --- */
.article-header {
    text-align: center;
    margin: 60px 0 40px;
    padding: 0 20px;
}

.article-category {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-secondary);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-weight: 500;
}

.article-title {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin: 20px 0;
    line-height: 1.3;
    font-weight: 700;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 20px;
    flex-wrap: wrap;
}

.article-featured-image {
    margin: 30px 0;
    text-align: center;
}

.article-featured-image img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.article-sub-images {
    margin: 24px 0 8px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.article-sub-images .article-sub-image {
    margin: 0;
}

.article-sub-images .article-sub-image img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* --- Table of Contents --- */
.table-of-contents {
    background: var(--bg-secondary);
    border-radius: 10px;
    padding: 25px 30px;
    margin: 30px 0;
    border: 1px solid var(--border-light);
}

.toc-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-blue);
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

/* 目次折りたたみ（デフォルトは非表示） */
.toc-list.toc-collapsed {
    display: none;
}

.toc-item {
    margin: 8px 0;
}

.toc-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.toc-link:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

.toc-sublist {
    list-style: none;
    padding-left: 20px;
    margin: 5px 0;
}

.toc-sublist .toc-link {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* --- Article Content --- */
.article-content {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    line-height: 1.8;
    overflow-wrap: break-word;
    word-wrap: break-word;
    margin-bottom: 40px;
}

.article-content h2 {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin: 40px 0 20px;
    border-bottom: 2px solid var(--primary-blue);
    padding-bottom: 10px;
    font-weight: 600;
}

.article-content h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin: 30px 0 15px;
    font-weight: 600;
}

.article-content h4 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin: 25px 0 12px;
    font-weight: 600;
}

.article-content p {
    margin: 20px 0;
    color: var(--text-primary);
}

.article-content a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-content a:hover {
    text-decoration: underline;
    color: var(--text-primary);
}

.article-content ul,
.article-content ol {
    margin: 20px 0;
    padding-left: 30px;
}

.article-content li {
    margin: 10px 0;
    color: var(--text-primary);
}

.article-content blockquote {
    border-left: 4px solid var(--primary-blue);
    padding: 15px 20px;
    margin: 30px 0;
    background: var(--bg-secondary);
    border-radius: 0 8px 8px 0;
    color: var(--text-secondary);
    font-style: italic;
}

.article-content table {
    width: 100%;
    max-width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.article-content th,
.article-content td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

.article-content th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

.article-content tr:hover {
    background: var(--bg-secondary);
}

.article-content code {
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    color: var(--accent-red);
}

.article-content pre {
    background: var(--bg-dark);
    color: var(--bg-primary);
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 20px 0;
}

.article-content pre code {
    background: none;
    color: inherit;
    padding: 0;
}

/* --- Related Articles --- */
.related-articles {
    margin: 40px 0;
    padding: 30px 0;
    border-top: 1px solid var(--border-light);
}

.related-articles h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 600;
}

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

.related-article-card {
    background: var(--bg-primary);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.related-article-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.12);
}

.related-article-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.related-article-card-content {
    padding: 15px;
}

.related-article-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px;
    line-height: 1.4;
}

.related-article-card-excerpt {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* --- Author Box --- */
.author-box {
    background: var(--bg-secondary);
    border-radius: 10px;
    padding: 25px;
    margin: 30px 0;
    display: flex;
    gap: 20px;
    align-items: center;
    border: 1px solid var(--border-light);
}

.author-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    flex-shrink: 0;
    overflow: hidden;
}

.author-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info {
    flex: 1;
}

.author-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 5px;
}

.author-bio {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* --- Print Button --- */
.print-button-container {
    text-align: center;
    margin: 20px 0;
}

.print-button {
    background: var(--primary-blue);
    color: var(--bg-primary);
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease;
}

.print-button:hover {
    background: #5a6fd8;
}

/* --- Article Navigation --- */
.article-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.nav-prev,
.nav-next {
    flex: 1;
    text-decoration: none;
    color: var(--primary-blue);
    font-weight: 600;
    padding: 15px;
    background: var(--bg-primary);
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.08);
    transition: all 0.2s ease;
    min-width: 200px;
    border: 1px solid var(--border-light);
}

.nav-prev:hover,
.nav-next:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
    color: #5a6fd8;
}

.nav-prev.disabled,
.nav-next.disabled {
    color: var(--text-muted);
    pointer-events: none;
    background: var(--bg-secondary);
}

/* --- Map Section Title --- */
.map-section-title {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
    border-bottom: 2px solid var(--primary-blue);
    padding-bottom: 10px;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .article-header {
        margin: 40px 0 30px;
        padding: 0 15px;
    }

    .article-title {
        font-size: 1.8rem;
    }

    .article-content {
        padding: 25px 20px;
    }

    .article-content h2 {
        font-size: 1.4rem;
    }

    .article-content h3 {
        font-size: 1.2rem;
    }

    .article-meta {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }

    .table-of-contents {
        padding: 20px;
    }

    .related-articles-grid {
        grid-template-columns: 1fr;
    }

    .author-box {
        flex-direction: column;
        text-align: center;
    }

    .article-navigation {
        flex-direction: column;
        gap: 10px;
    }

    .nav-prev,
    .nav-next {
        min-width: 100%;
    }
}

@media (max-width: 480px) {
    .article-header {
        margin: 30px 0 20px;
    }

    .article-title {
        font-size: 1.4rem;
    }

    .article-content {
        padding: 20px 15px;
    }

    .article-content h2 {
        font-size: 1.2rem;
    }

    .article-content h3 {
        font-size: 1.1rem;
    }

    .article-content table {
        font-size: 0.85rem;
    }

    .article-content th,
    .article-content td {
        padding: 8px;
    }

    /* 連続画像の間隔調整 */
    .article-content p + p > img {
        margin-top: 20px;
    }
}

/* ==========================================================================
   連続画像の間隔調整
   ========================================================================== */

/* 直前の段落に続く段落内の画像にマージンを追加（連続配置対策） */
.article-content p + p > img {
    margin-top: 40px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* ==========================================================================
   関連記事カード
   ========================================================================== */

.related-articles {
    margin: 40px 0;
    padding: 30px 0;
    border-top: 1px solid var(--border-light);
}

.related-articles h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 600;
}

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

.related-article-card {
    background: var(--bg-primary);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.related-article-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.related-article-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.related-article-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
}

.related-article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.related-article-card:hover .related-article-image img {
    transform: scale(1.05);
}

.related-article-content {
    padding: 15px;
}

.related-article-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 8px;
    line-height: 1.4;
}

.related-article-read-more {
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 500;
}

@media (max-width: 768px) {
    .related-articles-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .related-article-image {
        height: 150px;
    }
}

/* ==========================================================================
   モバイル横スクロール防止
   ========================================================================== */

@media (max-width: 375px) {
    .container {
        padding: 0 12px;
    }

    .article-content {
        padding: 15px 12px;
    }

    .article-content table {
        font-size: 0.8rem;
    }

    .article-navigation {
        gap: 8px;
    }

    .nav-prev,
    .nav-next {
        min-width: 100%;
        font-size: 0.9rem;
    }
}

/* ==========================================================================
   ページネーション
   ========================================================================== */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.pagination-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.pagination-link:not(.active):not(.disabled):hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
}

.pagination-link.active {
    background: var(--color-primary);
    color: white;
}

.pagination-link.disabled {
    color: var(--color-gray-400);
    cursor: not-allowed;
}

.pagination-ellipsis {
    padding: 0 8px;
    color: var(--color-gray-500);
}

@media (max-width: 480px) {
    .pagination {
        gap: 4px;
    }

    .pagination-link {
        min-width: 36px;
        height: 36px;
        padding: 0 8px;
        font-size: 0.85rem;
    }
}

/* ============================================
   ページネーション v2.0（モダンデザイン）
   ============================================ */

.pagination-wrapper {
    margin: 60px 0 40px;
}

.pagination-info-text {
    text-align: center;
    color: var(--color-gray-600);
    margin-bottom: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* Prev/Next ボタン */
.pagination-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--color-primary), #7b68ee);
    color: white;
    text-decoration: none;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.pagination-btn:hover {
    background: linear-gradient(135deg, #5568d3, #6a5acd);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.pagination-btn.disabled {
    background: var(--color-gray-200);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
    opacity: 0.6;
}

/* 番号ボタン */
.pagination-numbers {
    display: flex;
    gap: 6px;
}

.pagination-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    background: white;
    color: var(--color-primary);
    text-decoration: none;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid var(--color-primary);
}

.pagination-number:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.pagination-number.current {
    background: linear-gradient(135deg, var(--color-primary), #7b68ee);
    color: white;
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    transform: scale(1.05);
}

/* 省略記号 */
.pagination-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
    color: var(--color-gray-400);
    font-size: 1.2rem;
    letter-spacing: 2px;
}

/* SVG 矢印アイコン */
.pagination-btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* モバイル対応 */
@media (max-width: 768px) {
    .pagination-wrapper {
        margin: 40px 0 30px;
    }

    .pagination {
        gap: 6px;
    }

    .pagination-btn {
        padding: 8px 14px;
        font-size: 0.85rem;
    }

    .pagination-btn svg {
        width: 14px;
        height: 14px;
    }

    .pagination-number {
        min-width: 36px;
        height: 36px;
        padding: 0 10px;
        font-size: 0.85rem;
    }

    .pagination-first,
    .pagination-last {
        display: none;
    }
}

@media (max-width: 480px) {
    .pagination-info-text {
        font-size: 0.8rem;
    }

    .pagination-btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .pagination-number {
        min-width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }

    /* 番号を非表示にしてPrev/Nextのみ表示 */
    .pagination-number,
    .pagination-ellipsis {
        display: none;
    }

    .pagination-btn {
        display: inline-flex;
    }
}

/* ============================================
   カテゴリナビゲーション
   ============================================ */

.category-nav {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 30px 0;
    flex-wrap: wrap;
}

.category-nav-link {
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.category-nav-link.active {
    background: linear-gradient(135deg, var(--color-primary), #7b68ee);
    color: white;
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.category-nav-link:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

/* ============================================
   ヘッダー v2.0（モダンデザイン）
   ============================================ */

.site-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

/* ロゴ */
.site-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
    transition: opacity 0.2s ease;
}

.site-logo:hover {
    opacity: 0.8;
}

/* ナビゲーション */
.site-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-link {
    color: var(--color-gray-700);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 8px;
    transition: all 0.2s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--color-primary);
    background: rgba(102, 126, 234, 0.08);
}

.nav-link.active {
    color: var(--color-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
}

/* カテゴリナビドロップダウン */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-dropdown-trigger svg {
    width: 12px;
    height: 12px;
    fill: currentColor;
    transition: transform 0.2s ease;
}

.nav-dropdown:hover .nav-dropdown-trigger svg {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 600px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: 12px;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    margin-top: 16px;
}

.dropdown-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.dropdown-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background: var(--color-gray-50);
    transform: translateX(4px);
}

.dropdown-item-icon {
    font-size: 1.5rem;
}

.dropdown-item-title {
    font-weight: 600;
    color: var(--color-gray-800);
    font-size: 0.9rem;
}

.dropdown-item-desc {
    color: var(--color-gray-600);
    font-size: 0.8rem;
}

/* 検索ボックス */
.header-search {
    position: relative;
    display: flex;
    align-items: center;
}

.header-search-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-gray-100);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.header-search-btn svg {
    width: 18px;
    height: 18px;
    fill: var(--color-gray-600);
    transition: fill 0.2s ease;
}

.header-search-btn:hover {
    background: var(--color-primary);
}

.header-search-btn:hover svg {
    fill: white;
}

/* モバイルメニュー */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    transition: all 0.3s ease;
}

/* ============================================
   フッター v2.0（4カラム構成）
   ============================================ */

.site-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    color: var(--color-gray-400);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    display: inline-block;
}

.footer-link:hover {
    color: white;
    transform: translateX(4px);
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-gray-800);
    border-radius: 50%;
    color: var(--color-gray-400);
    text-decoration: none;
    transition: all 0.2s ease;
}

.footer-social-link:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

.footer-social-link svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

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

@media (max-width: 1024px) {
    .nav-dropdown-menu {
        min-width: 500px;
    }

    .dropdown-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 60px;
    }

    .site-logo {
        font-size: 1.3rem;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .site-nav {
        position: fixed;
        top: 60px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 60px);
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: -4px 0 12px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        overflow-y: auto;
        gap: 0;
    }

    .site-nav.open {
        right: 0;
    }

    .nav-link {
        width: 100%;
        padding: 12px 16px;
        border-bottom: 1px solid var(--color-gray-100);
    }

    .nav-link::after {
        display: none;
    }

    .nav-dropdown-menu {
        position: static;
        min-width: 100%;
        box-shadow: none;
        padding: 0 0 0 20px;
        opacity: 1;
        visibility: visible;
        margin-top: 0;
        display: none;
    }

    .nav-dropdown.open .nav-dropdown-menu {
        display: block;
    }

    .dropdown-grid {
        grid-template-columns: 1fr;
    }

    /* フッター */
    .site-footer {
        padding: 40px 0 20px;
        margin-top: 60px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-copyright {
        font-size: 0.8rem;
    }
}

/* =============================================================================
   記事ページ — 画像の縦続き（deploy/画像配置ルール_v1.0.md 第2条）
   同一でない画像でも密集を避ける。原則は本文に説明・見出しを挟むこと。
   ============================================================================= */

.article-featured-image + .article-sub-images {
    margin-top: clamp(1.25rem, 3vw, 2rem);
}

.article-sub-images {
    margin: 24px 0 8px;
    display: flex;
    flex-direction: column;
    gap: clamp(1.25rem, 4vw, 2.75rem);
}

.article-sub-images .article-sub-image {
    margin: 0;
}

.article-sub-images .article-sub-image img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.article-content img + img {
    display: block;
    margin-top: clamp(2rem, 5vw, 3.25rem);
}

.article-content figure + figure {
    margin-top: clamp(2rem, 5vw, 3.25rem);
}

.article-content p:has(> img:only-child) + p:has(> img:only-child) {
    margin-top: clamp(2rem, 5vw, 3.25rem);
}

.article-content figure:has(> img) + p:has(> img:only-child),
.article-content p:has(> img:only-child) + figure:has(> img) {
    margin-top: clamp(2rem, 5vw, 3.25rem);
}