/**
 * Trufflewith フロントエンドスタイルシート
 * モダンでミニマルなブログデザイン
 */

/* ==========================================================================
   CSS変数
   ========================================================================== */
:root {
    /* メインカラー */
    --color-primary: #8B7355;
    --color-primary-light: #A89078;
    --color-primary-dark: #6B5545;
    --color-accent: #D4C4A8;
    --color-accent-light: #F5F0E8;

    /* テキストカラー */
    --color-text: #2c2c2c;
    --color-text-light: #555555;
    --color-text-muted: #888888;

    /* 背景カラー */
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F8F8F8;
    --color-bg-accent: #F5F0E8;

    /* ボーダーカラー */
    --color-border: #E0E0E0;
    --color-border-light: #EEEEEE;

    /* フォント */
    --font-sans: "Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
    --font-serif: "Noto Serif JP", "Yu Mincho", serif;

    /* トランジション */
    --transition: 0.25s ease;
}

/* ==========================================================================
   リセット・ベース
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
}

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* ==========================================================================
   レイアウト
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.main-content {
    min-height: calc(100vh - 200px);
    padding: 48px 0;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}

.content-area {
    min-width: 0;
}

.sidebar {
    position: sticky;
    top: 24px;
}

/* ==========================================================================
   ヘッダー
   ========================================================================== */
.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border-light);
    padding: 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.site-branding a {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: 0.02em;
}

.site-branding a:hover {
    color: var(--color-primary);
}

/* ナビゲーション */
.site-nav .nav-menu {
    display: flex;
    gap: 32px;
}

.site-nav a {
    font-size: 0.9rem;
    color: var(--color-text-light);
    padding: 8px 0;
    position: relative;
}

.site-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition);
}

.site-nav a:hover {
    color: var(--color-text);
}

.site-nav a:hover::after {
    width: 100%;
}

/* メニュートグル（モバイル） */
.menu-toggle {
    display: none;
    width: 28px;
    height: 20px;
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.menu-toggle span:nth-child(3) { bottom: 0; }

/* メニュートグル アクティブ状態（×に変形） */
.menu-toggle.active span:nth-child(1) {
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    bottom: auto;
    top: 50%;
    transform: translateY(-50%) rotate(-45deg);
}

/* ==========================================================================
   フッター
   ========================================================================== */
.site-footer {
    background: var(--color-bg-secondary);
    padding: 32px 0;
    margin-top: auto;
}

.footer-inner {
    text-align: center;
}

.copyright {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   記事カード
   ========================================================================== */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.post-card {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 24px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--color-border-light);
}

.post-card:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.post-thumbnail {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: 8px;
    background: var(--color-bg-secondary);
}

.post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.post-thumbnail:hover img {
    transform: scale(1.03);
}

.post-thumbnail.no-image {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.post-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    font-size: 0.8rem;
}

.post-category {
    display: inline-block;
    padding: 3px 10px;
    background: var(--color-accent-light);
    color: var(--color-primary-dark);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.post-meta time {
    color: var(--color-text-muted);
}

.post-title {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 8px;
}

.post-title a {
    color: var(--color-text);
}

.post-title a:hover {
    color: var(--color-primary);
}

.post-excerpt {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-primary);
}

/* ==========================================================================
   サイドバー
   ========================================================================== */
.sidebar-section {
    background: var(--color-bg);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--color-border-light);
    margin-bottom: 24px;
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-accent);
    color: var(--color-text);
}

/* プロフィール */
.profile-section {
    text-align: center;
}

.profile-image {
    width: 80px;
    height: 80px;
    margin: 0 auto 12px;
    border-radius: 50%;
    overflow: hidden;
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-name {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
    border-bottom: none;
    padding-bottom: 0;
}

.profile-text {
    font-size: 0.85rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* 検索フォーム */
.search-form {
    display: flex;
    gap: 8px;
}

.search-form input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.9rem;
    transition: border-color var(--transition);
}

.search-form input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-form button {
    padding: 10px 16px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background var(--transition);
}

.search-form button:hover {
    background: var(--color-primary-dark);
}

/* カテゴリリスト */
.category-list li {
    margin-bottom: 4px;
}

.category-list a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-light);
    font-size: 0.9rem;
}

.category-list li:last-child a {
    border-bottom: none;
}

.category-list a:hover {
    color: var(--color-primary);
}

.category-list .count {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* 記事リスト（サイドバー） */
.sidebar-section .post-list,
.sidebar-section ul:not(.category-list) {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.sidebar-section .post-list li,
.sidebar-section ul:not(.category-list) li {
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border-light);
}

.sidebar-section .post-list li:last-child,
.sidebar-section ul:not(.category-list) li:last-child {
    border-bottom: none;
}

.sidebar-section .post-list a,
.sidebar-section ul:not(.category-list) a {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text);
    line-height: 1.5;
}

.sidebar-section .post-list a:hover,
.sidebar-section ul:not(.category-list) a:hover {
    color: var(--color-primary);
}

/* 人気記事（番号付き） */
.popular-list {
    counter-reset: popular;
}

.popular-list li {
    position: relative;
    padding: 10px 0 10px 32px;
    border-bottom: 1px solid var(--color-border-light);
}

.popular-list li:last-child {
    border-bottom: none;
}

.popular-list li::before {
    counter-increment: popular;
    content: counter(popular);
    position: absolute;
    left: 0;
    top: 12px;
    width: 22px;
    height: 22px;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.popular-list li:nth-child(1)::before { background: #D4AF37; }
.popular-list li:nth-child(2)::before { background: #A8A8A8; }
.popular-list li:nth-child(3)::before { background: #CD7F32; }

.popular-list a {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text);
    line-height: 1.5;
}

.popular-list a:hover {
    color: var(--color-primary);
}

/* ==========================================================================
   ページネーション
   ========================================================================== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border-light);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    font-size: 0.9rem;
    border-radius: 6px;
    transition: var(--transition);
}

.pagination a {
    color: var(--color-text);
    background: var(--color-bg-secondary);
}

.pagination a:hover {
    background: var(--color-accent-light);
    color: var(--color-primary-dark);
}

.pagination-numbers {
    display: flex;
    gap: 4px;
}

.pagination-current {
    background: var(--color-primary);
    color: #fff;
}

.pagination-ellipsis {
    color: var(--color-text-muted);
}

/* ==========================================================================
   記事詳細
   ========================================================================== */
.article-single {
    background: var(--color-bg);
}

.article-header {
    margin-bottom: 32px;
}

.article-category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--color-accent-light);
    color: var(--color-primary-dark);
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 16px;
}

.article-title {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 16px;
}

.article-meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.article-featured-image {
    margin-bottom: 40px;
    border-radius: 12px;
    overflow: hidden;
}

.article-content {
    font-size: 1rem;
    line-height: 2;
}

.article-content h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 48px 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-accent);
    clear: both;
}

.article-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 36px 0 16px;
    clear: both;
}

.article-content p {
    margin-bottom: 1.5em;
}

.article-content .text-big {
    font-size: 1.6em;
}

.article-content .text-center {
    display: block;
    text-align: center;
}

.article-content .marker {
    padding: 0 2px;
}

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

.article-content ul,
.article-content ol {
    margin: 1.5em 0;
    padding-left: 1.5em;
}

.article-content ul.list-bullet { list-style: disc; }
.article-content ol.list-number { list-style: decimal; }
.article-content ul.list-circle { list-style: none; }
.article-content ul.list-circle li::before {
    content: attr(data-num);
    margin-right: 0.5em;
}
.article-content li { margin-bottom: 0.5em; }

.article-content blockquote {
    margin: 2em 0;
    padding: 20px 24px;
    background: var(--color-bg-accent);
    border-left: 4px solid var(--color-primary);
    font-style: italic;
}

.article-content pre {
    margin: 2em 0;
    padding: 20px;
    background: #2d2d2d;
    color: #f8f8f2;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.9rem;
}

.article-content img {
    display: block;
    max-width: 100%;
    margin: 2em auto;
    border-radius: 8px;
}

/* メディアラッパー */
.article-content .media-wrapper {
    margin: 0;
    min-width: 50px;
    box-sizing: border-box;
}

.article-content .media-wrapper img,
.article-content .media-wrapper video {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
}

/* 横並び画像のFlexコンテナ */
.article-content .media-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px; /* 縦横8px */
    align-items: flex-start;
    align-content: flex-start;
    justify-content: center;
    margin: 0;
    clear: both;
    line-height: 0;
    font-size: 0;
}

.article-content .media-row .media-wrapper,
.article-content .media-row .media-wrapper.align-left,
.article-content .media-row .media-wrapper.align-right,
.article-content .media-row .media-wrapper.align-center {
    float: none !important;
    margin: 0 !important;
    padding: 0 !important;
    flex: 0 1 auto;
    box-sizing: border-box;
    display: block;
    line-height: 0 !important;
    font-size: 0 !important;
}

.article-content .media-row .media-wrapper a.glightbox {
    display: block;
    line-height: 0;
    font-size: 0;
    padding: 0;
    margin: 0;
}

.article-content .media-row .media-wrapper img,
.article-content .media-row .media-wrapper video {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* 配置 */
.article-content .media-wrapper.align-left {
    float: left;
    margin-right: 8px;
    margin-bottom: 8px;
    line-height: 0;
    font-size: 0;
}

.article-content .media-wrapper.align-right {
    float: right;
    margin-left: 8px;
    margin-bottom: 8px;
    line-height: 0;
    font-size: 0;
}

.article-content .media-wrapper.align-center {
    display: block;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
    clear: both;
}

/* 回り込み解除 */
.article-content::after {
    content: "";
    display: table;
    clear: both;
}

/* YouTube埋め込み */
.article-content .youtube-wrapper .youtube-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.article-content .youtube-wrapper .youtube-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
}

/* フロート解除 */
.article-content::after {
    content: "";
    display: table;
    clear: both;
}

/* 記事フッター・シェア */
.article-footer {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border-light);
}

.article-share {
    display: flex;
    align-items: center;
    gap: 16px;
}

.share-label {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.article-share a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: #fff;
    transition: transform var(--transition);
}

.article-share a:hover {
    transform: scale(1.1);
}

.share-twitter { background: #1DA1F2; }
.share-facebook { background: #1877F2; }
.share-hatena { background: #00A4DE; }
.share-line { background: #00B900; }

/* 関連記事 */
.related-posts {
    margin-top: 56px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border-light);
}

.section-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.related-thumbnail {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: 8px;
    margin-bottom: 12px;
    background: var(--color-bg-secondary);
}

.related-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.related-thumbnail:hover img {
    transform: scale(1.03);
}

.related-post-card h3 {
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.5;
}

.related-post-card h3 a {
    color: var(--color-text);
}

.related-post-card h3 a:hover {
    color: var(--color-primary);
}

/* ==========================================================================
   コメント
   ========================================================================== */
.comments-section {
    margin-top: 56px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border-light);
}

.comments-list {
    margin-bottom: 32px;
}

.comment {
    padding: 20px;
    background: var(--color-bg-secondary);
    border-radius: 8px;
    margin-bottom: 16px;
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.comment-author {
    font-weight: 600;
}

.comment-header time {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.comment-body {
    font-size: 0.95rem;
    line-height: 1.8;
}

.no-comments {
    padding: 32px;
    text-align: center;
    color: var(--color-text-muted);
    background: var(--color-bg-secondary);
    border-radius: 8px;
}

/* コメントフォーム */
.comment-form-wrapper {
    padding: 28px;
    background: var(--color-bg-accent);
    border-radius: 12px;
}

.comment-form-wrapper h3 {
    font-size: 1rem;
    margin-bottom: 20px;
}

.comment-form .form-group {
    margin-bottom: 20px;
}

.comment-form label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 6px;
}

.comment-form .required {
    color: #e74c3c;
}

.comment-form input,
.comment-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition);
}

.comment-form input:focus,
.comment-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.comment-form textarea {
    resize: vertical;
    min-height: 120px;
}

/* ==========================================================================
   アーカイブ・検索
   ========================================================================== */
.archive-header {
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border-light);
}

.archive-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.archive-label {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-text-muted);
    display: block;
    margin-bottom: 4px;
}

.archive-count {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.search-form-wrapper {
    margin-bottom: 40px;
}

.search-form-large {
    display: flex;
    gap: 12px;
    max-width: 480px;
}

.search-form-large input {
    flex: 1;
    padding: 14px 16px;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
}

.search-form-large input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.search-form-large button {
    padding: 14px 24px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
}

/* ==========================================================================
   固定ページ
   ========================================================================== */
.page-single .page-header {
    margin-bottom: 40px;
}

.page-title {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 600;
}

.page-content {
    font-size: 1rem;
    line-height: 2;
}

/* ==========================================================================
   エラーページ
   ========================================================================== */
.error-page {
    text-align: center;
    padding: 80px 24px;
}

.error-code {
    font-size: 6rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 16px;
}

.error-title {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.error-message {
    color: var(--color-text-light);
    margin-bottom: 32px;
}

.error-search {
    max-width: 360px;
    margin: 0 auto;
}

/* ==========================================================================
   投稿なし
   ========================================================================== */
.no-posts {
    padding: 64px 24px;
    text-align: center;
    color: var(--color-text-muted);
    background: var(--color-bg-secondary);
    border-radius: 12px;
}

/* ==========================================================================
   ボタン
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 6px;
    text-align: center;
    transition: var(--transition);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    color: #fff;
}

/* ==========================================================================
   レスポンシブ
   ========================================================================== */
@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 1fr 280px;
        gap: 36px;
    }

    .post-card {
        grid-template-columns: 200px 1fr;
    }
}

@media (max-width: 768px) {
    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .sidebar {
        margin-top: 48px;
        position: static;
    }

    /* ヘッダー */
    .menu-toggle {
        display: block;
    }

    .site-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-top: 1px solid var(--color-border-light);
        padding: 16px 24px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }

    .site-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .site-nav .nav-menu {
        flex-direction: column;
        gap: 0;
    }

    .site-nav .nav-menu li {
        border-bottom: 1px solid var(--color-border-light);
    }

    .site-nav .nav-menu li:last-child {
        border-bottom: none;
    }

    .site-nav a {
        display: block;
        padding: 14px 0;
    }

    /* 記事カード */
    .post-card {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .post-thumbnail {
        aspect-ratio: 16 / 9;
    }

    /* 記事詳細 */
    .article-title {
        font-size: 1.5rem;
    }

    .related-posts-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    /* スマホでは回り込みを解除し、画像を大きく表示 */
    .article-content .media-wrapper.align-left,
    .article-content .media-wrapper.align-right {
        float: none !important;
        width: 100% !important;
        margin: 16px 0 !important;
        display: block;
    }

    /* 横並び画像はスマホでは2列に（3×2→2×3など） */
    .article-content .media-row {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .article-content .media-row .media-wrapper {
        width: 48% !important;
        max-width: 48% !important;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 16px;
    }

    .main-content {
        padding: 32px 0;
    }

    .header-inner {
        height: 60px;
    }

    .error-code {
        font-size: 4rem;
    }
}

/* ==========================================================================
   アラートメッセージ
   ========================================================================== */
.alert {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.alert-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.alert-error {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}