/* MechaToraのブログ - 共通スタイル */

:root {
    /* mechatora.comと統一した青系カラー */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --text-color: #1f2937;
    --text-secondary: #6b7280;
    --bg-color: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --link-color: #2563eb;
    --link-hover: #1e40af;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
    line-height: 1.7; /* 成功サイトと同じ行間 */
    color: var(--text-color);
    background-color: var(--bg-color);
    font-size: 16px;
}

/* コンテナ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.content-wrapper {
    max-width: 800px; /* 記事の読みやすい幅 */
    margin: 0 auto;
}

/* ヘッダー */
header {
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

/* ナビゲーション */
nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s;
}

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

/* メインコンテンツ */
main {
    min-height: calc(100vh - 300px);
    padding: 3rem 0;
}

/* 記事カード */
.article-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: box-shadow 0.3s, transform 0.3s;
}

.article-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.article-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.article-category {
    background: var(--primary-light);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.article-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.article-title a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s;
}

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

.article-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.read-more {
    display: inline-block;
    color: var(--link-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.read-more:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* 記事本文 */
article {
    background: var(--bg-color);
    padding: 3rem 2rem;
}

article h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

article h2 {
    font-size: 1.75rem;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}

article h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
}

article p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

article ul, article ol {
    margin: 1.5rem 0;
    padding-left: 2rem;
}

article li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

article code {
    background: var(--bg-secondary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'Courier New', monospace;
}

article pre {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
}

article pre code {
    background: none;
    padding: 0;
}

article img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2rem 0;
}

article blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    color: var(--text-secondary);
    font-style: italic;
}

/* フッター */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* パンくずリスト */
.breadcrumb {
    padding: 1rem 0;
    font-size: 0.875rem;
}

.breadcrumb ul {
    list-style: none;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
}

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

.breadcrumb li:not(:last-child)::after {
    content: '›';
    margin-left: 0.5rem;
    color: var(--text-secondary);
}

/* セクション見出し */
.section-title {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 2rem;
    text-align: center;
}

/* カテゴリ一覧 */
.category-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.category-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s;
}

.category-card:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.category-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.category-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.category-card:hover p {
    color: rgba(255,255,255,0.9);
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.2s;
}

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

/* レスポンシブ */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        gap: 1rem;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    article {
        padding: 2rem 1rem;
    }

    article h1 {
        font-size: 1.75rem;
    }

    article h2 {
        font-size: 1.5rem;
    }
}

/* ページネーション */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 3rem 0;
}

.pagination a,
.pagination span {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-color);
}

.pagination a:hover {
    background: var(--primary-color);
    color: white;
}

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

/* お問い合わせフォーム */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}