/* ALLFORCES AI情報メディア - メインスタイルシート */

/* ===== 基本設定 ===== */
:root {
  /* カラーパレット - Media Branding */
  --primary-green: #10b981;
  --primary-green-dark: #059669;
  --secondary-blue: #3b82f6;
  --primary-color: #10b981;
  --primary-dark: #059669;
  --secondary-color: #64748b;
  --accent-color: #f59e0b;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  
  /* グレースケール */
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* タイポグラフィ */
  --font-family-sans: 'Inter', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
  
  /* サイズ */
  --max-width: 1200px;
  --content-width: 800px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* スペーシング */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --border-radius-xl: 16px;
  --spacing-4xl: 6rem;
  
  /* トランジション */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

/* ===== 基本スタイル ===== */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  line-height: 1.7;
  color: var(--gray-700);
  background-color: var(--gray-50);
  margin: 0;
  padding: 0;
  font-size: 16px;
}

/* ===== ヘッダー ===== */
.site-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 1rem 0;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-title:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  transition: all 0.2s ease;
}

.ai-icon {
  width: 32px;
  height: 32px;
  background: var(--accent-color);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 18px;
}

.site-logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.site-title-text {
  font-size: 1.5rem;
  font-weight: 700;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 2rem;
}

.site-nav a {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: all 0.2s ease;
}

.site-nav a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.corporate-link {
  background: var(--accent-color) !important;
  font-weight: 600 !important;
}

.corporate-link:hover {
  background: #f59e0b !important;
  transform: translateY(-1px) !important;
}

/* ===== ドロップダウンナビゲーション ===== */
.site-nav .dropdown {
  position: relative;
}

.site-nav .dropdown-toggle {
  cursor: pointer;
  user-select: none;
  position: relative;
}

.site-nav .dropdown-toggle::after {
  content: '▼';
  font-size: 0.8rem;
  margin-left: 0.5rem;
  transition: transform 0.2s ease;
}

.site-nav .dropdown:hover .dropdown-toggle::after {
  transform: rotate(180deg);
}

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

.site-nav .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
  border: 1px solid var(--gray-200);
  /* Override parent flex properties */
  display: block !important;
  flex-direction: column !important;
}

.site-nav .dropdown-menu ul {
  display: block !important;
  flex-direction: column !important;
  gap: 0 !important;
}

.site-nav .dropdown-menu li {
  display: block !important;
  width: 100%;
  flex: none !important;
}

.site-nav .dropdown-menu a {
  color: var(--gray-700) !important;
  display: block;
  padding: 0.75rem 1rem;
  font-weight: 500;
  border-radius: 0;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.site-nav .dropdown-menu a:hover {
  background: var(--gray-100) !important;
  color: var(--primary-green) !important;
  transform: translateX(4px);
}

.site-nav .dropdown-menu li:first-child a {
  border-top-left-radius: var(--border-radius);
  border-top-right-radius: var(--border-radius);
}

.site-nav .dropdown-menu li:last-child a {
  border-bottom-left-radius: var(--border-radius);
  border-bottom-right-radius: var(--border-radius);
}

/* ===== メインコンテンツ ===== */
.main-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 2rem;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
}

.content {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* ===== 記事スタイル ===== */
.post {
  padding: 3rem;
}

.post-header {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--gray-200);
}

.post-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin: 0 0 1rem 0;
  line-height: 1.2;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--gray-500);
  font-size: 0.9rem;
}

.post-date {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.post-tags {
  display: flex;
  gap: 0.5rem;
}

.tag {
  background: var(--primary-color);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
}

.tag:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.post-content {
  font-size: 1.1rem;
  line-height: 1.8;
}

/* ===== タイポグラフィ ===== */
.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  color: var(--gray-900);
  font-weight: 700;
  margin: 2rem 0 1rem 0;
  line-height: 1.3;
}

.post-content h1 { font-size: 2.25rem; }
.post-content h2 { 
  font-size: 1.875rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-color);
}
.post-content h3 { font-size: 1.5rem; }
.post-content h4 { font-size: 1.25rem; }

.post-content p {
  margin: 1.5rem 0;
}

.post-content a {
  color: var(--primary-color);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all 0.2s ease;
}

.post-content a:hover {
  border-bottom-color: var(--primary-color);
}

/* ===== コードブロック ===== */
.post-content pre {
  background: var(--gray-900);
  color: var(--gray-100);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  overflow-x: auto;
  font-family: var(--font-family-mono);
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 2rem 0;
}

.post-content code {
  font-family: var(--font-family-mono);
  font-size: 0.9em;
  background: var(--gray-100);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  color: var(--gray-800);
}

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

/* ===== リスト ===== */
.post-content ul,
.post-content ol {
  margin: 1.5rem 0;
  padding-left: 2rem;
}

.post-content li {
  margin: 0.5rem 0;
}

/* ===== 引用 ===== */
.post-content blockquote {
  border-left: 4px solid var(--primary-color);
  background: var(--gray-50);
  margin: 2rem 0;
  padding: 1rem 1.5rem;
  font-style: italic;
  color: var(--gray-600);
}

/* ===== テーブル ===== */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: var(--white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.post-content th,
.post-content td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.post-content th {
  background: var(--gray-50);
  font-weight: 600;
  color: var(--gray-900);
}

/* ===== サイドバー ===== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.widget {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.widget-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 0 0 1.5rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-color);
}

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

.recent-posts li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--gray-200);
}

.recent-posts li:last-child {
  border-bottom: none;
}

.recent-posts a {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.recent-posts a:hover {
  color: var(--primary-color);
}

.recent-posts .post-date {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 0.5rem;
}

/* ===== フッター ===== */
.site-footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 3rem 0 2rem 0;
  margin-top: 4rem;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--white);
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-section a {
  color: var(--gray-300);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--gray-700);
  font-size: 0.9rem;
}

/* ===== レスポンシブデザイン ===== */
@media (max-width: 1024px) {
  .main-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .sidebar {
    order: -1;
  }
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    flex-wrap: wrap;
  }
  
  .site-title {
    font-size: 1.2rem;
  }
  
  .site-nav ul {
    gap: 1rem;
    flex-wrap: wrap;
  }
  
  .site-nav a {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
  }
  
  .main-container {
    padding: 2rem 1rem;
  }
  
  .post {
    padding: 2rem 1.5rem;
  }
  
  .post-title {
    font-size: 2rem;
  }
  
  .post-content h1 { font-size: 1.875rem; }
  .post-content h2 { font-size: 1.5rem; }
  .post-content h3 { font-size: 1.25rem; }
}

@media (max-width: 480px) {
  .post {
    padding: 1.5rem 1rem;
  }
  
  .post-title {
    font-size: 1.75rem;
  }
  
  .widget {
    padding: 1.5rem;
  }
}

/* ===== アニメーション ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.post {
  animation: fadeInUp 0.6s ease-out;
}

/* ===== ユーティリティクラス ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.hidden { display: none; }

.tag-note {
  font-size: 0.8rem;
  color: #6c757d;
  margin-top: 0.5rem;
  font-style: italic;
}

/* ===== メディア向け新スタイル ===== */

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: var(--spacing-4xl) var(--spacing-xl);
    margin: calc(-1 * var(--spacing-2xl)) calc(-1 * var(--spacing-xl)) var(--spacing-2xl);
    text-align: center;
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

.hero-content p {
    font-size: 1.2rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.hero-stats .stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-stats .stat-number {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
}

.hero-stats .stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-top: var(--spacing-xs);
}

/* Search Section */
.search-section {
    padding: var(--spacing-2xl) 0;
    background: var(--gray-50);
    margin: var(--spacing-2xl) calc(-1 * var(--spacing-xl)) var(--spacing-2xl);
}

.search-container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.search-form {
    display: flex;
    gap: var(--spacing-md);
    max-width: 500px;
    margin: 0 auto;
}

.search-input {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius-lg);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.search-button {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--primary-green);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Sections */
.featured-section,
.articles-section,
.categories-section {
    margin-bottom: var(--spacing-4xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.section-icon {
    font-size: 1.5rem;
}

.section-link {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.section-link:hover {
    color: var(--primary-green-dark);
}

/* Featured Grid */
.featured-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (min-width: 1024px) {
    .featured-grid {
        grid-template-columns: 1.6fr 1fr;
    }
}

.featured-main {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    min-height: 400px;
}

.featured-main:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-green);
}

.featured-secondary {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

@media (max-width: 1023px) {
    .featured-secondary {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1rem;
    }
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Article Card */
.article-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 360px;
}

.article-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-green);
}

.article-card.small {
    flex-direction: row;
    height: auto;
    min-height: 140px;
    max-height: 180px;
}

.article-image {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.8rem;
    font-weight: bold;
    height: 160px;
    flex-shrink: 0;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    position: relative;
    overflow: hidden;
}

.article-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(1px);
}

.article-image.small {
    height: 100%;
    min-width: 120px;
    max-width: 120px;
    font-size: 2rem;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    margin-right: 0;
}

.article-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-content.small {
    padding: 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.article-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.article-category {
    background: var(--primary-green);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
}

.article-date,
.article-reading-time {
    color: var(--gray-600);
}

.article-title {
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.article-title a {
    color: var(--gray-900);
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.4;
    transition: color var(--transition-fast);
    /* Handle long titles gracefully */
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
    text-overflow: ellipsis;
}

.article-title.small a {
    font-size: 1.1rem;
    line-height: 1.3;
    -webkit-line-clamp: 2;
}

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

.article-excerpt {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: auto;
    flex-wrap: wrap;
}

.article-author {
    color: var(--gray-600);
    font-size: 0.9rem;
}

.article-tags {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.tag {
    background: var(--gray-200);
    color: var(--gray-700);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.tag:hover {
    background: var(--primary-green);
    color: var(--white);
}

/* Pagination */
.pagination-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-3xl);
}

.pagination-link {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--white);
    color: var(--primary-green);
    text-decoration: none;
    border: 2px solid var(--primary-green);
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all var(--transition-fast);
}

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

.pagination-numbers {
    display: flex;
    gap: var(--spacing-sm);
}

.pagination-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.pagination-number:hover,
.pagination-number.active {
    background: var(--primary-green);
    color: var(--white);
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.category-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-green);
}

.category-header {
    padding: var(--spacing-xl);
    align-items: flex-start;
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.category-icon-large {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-blue) 100%);
    border-radius: var(--border-radius-lg);
    color: var(--white);
    flex-shrink: 0;
}

.category-info {
    flex: 1;
}

.category-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.category-description {
    color: var(--gray-600);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.category-count {
    background: var(--primary-green);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 600;
}

.category-posts {
    padding: var(--spacing-lg);
}

.category-post {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-200);
    gap: var(--spacing-md);
}

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

.category-post-title {
    color: var(--gray-700);
    text-decoration: none;
    font-size: 0.9rem;
    line-height: 1.4;
    flex: 1;
    transition: color var(--transition-fast);
}

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

.category-post-date {
    color: var(--gray-500);
    font-size: 0.8rem;
    white-space: nowrap;
}

.category-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
    text-align: center;
}

.category-link {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

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

/* Enhanced Media Queries */
@media (max-width: 1024px) {
  .featured-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .main-container {
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2rem;
    line-height: 1.3;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .featured-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .featured-secondary {
    gap: 0.75rem;
  }
  
  .header-container {
    padding: 0 1rem;
  }
  
  .site-nav ul {
    gap: 1rem;
  }
  
  .site-nav a {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
  }
  
  .site-title {
    font-size: 1.3rem;
  }
  
  .site-logo {
    width: 35px;
    height: 35px;
  }
  
  .articles-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .article-card {
    min-height: 340px;
  }
  
  .article-image {
    height: 120px;
    font-size: 2rem;
  }
  
  .article-content {
    padding: 1.2rem;
  }
  
  .categories-grid {
    grid-template-columns: 1fr;
  }
  
  .category-header {
    flex-direction: column;
    text-align: center;
  }
  
  .category-icon-large {
    margin: 0 auto;
  }
  
  .search-form {
    flex-direction: column;
  }
  
  .pagination-nav {
    flex-wrap: wrap;
  }
  
  .article-card.small {
    flex-direction: column;
  }
  
  .article-image.small {
    height: 120px;
    width: 100%;
    min-width: auto;
  }
}

/* ===== プリント用スタイル ===== */
@media print {
  .site-header,
  .sidebar,
  .site-footer {
    display: none;
  }
  
  .main-container {
    grid-template-columns: 1fr;
    max-width: none;
    padding: 0;
  }
  
  .content {
    box-shadow: none;
    border-radius: 0;
  }
}

/* ===== カテゴリページ共通スタイル ===== */
.category-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.category-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, var(--primary-green) 0%, #059669 100%);
    color: var(--white);
    border-radius: var(--border-radius-xl);
}

.category-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.category-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.category-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.category-stats {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.category-stats .stat {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 600;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 2rem;
    border-bottom: 3px solid var(--primary-green);
    padding-bottom: 0.5rem;
}

.featured-article {
    margin-bottom: 4rem;
}

.featured-post {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
}

.featured-content {
    padding: 2.5rem;
}

.featured-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: var(--gray-600);
}

.featured-date {
    font-weight: 600;
}

.featured-post h3 {
    margin-bottom: 1.5rem;
}

.featured-post h3 a {
    color: var(--gray-900);
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.3;
}

.featured-post h3 a:hover {
    color: var(--primary-green);
}

.featured-post p {
    color: var(--gray-700);
    line-height: 1.6;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.featured-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.articles-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.article-card {
    display: flex;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all 0.2s ease;
}

.article-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.article-date {
    background: var(--primary-green);
    color: var(--white);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    text-align: center;
}

.article-date .day {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1;
}

.article-date .month {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.article-content {
    flex: 1;
    padding: 1.5rem;
}

.article-meta {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--gray-600);
}

.article-title {
    margin-bottom: 1rem;
}

.article-title a {
    color: var(--gray-900);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.3;
}

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

.article-excerpt {
    color: var(--gray-600);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.article-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 0.2rem 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 600;
}

.no-posts {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--gray-50);
    border-radius: var(--border-radius-lg);
    color: var(--gray-600);
}

/* カテゴリページ レスポンシブデザイン */
@media (max-width: 768px) {
    .category-page {
        padding: 1rem;
    }
    
    .category-header {
        padding: 2rem 1rem;
        margin-bottom: 2rem;
    }
    
    .category-icon {
        font-size: 3rem;
    }
    
    .category-header h1 {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .category-header p {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .category-stats {
        gap: 1rem;
        align-items: center;
    }
    
    .category-stats .stat {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
        white-space: nowrap;
    }
    
    .featured-content {
        padding: 1.5rem;
    }
    
    .featured-post h3 a {
        font-size: 1.4rem;
    }
    
    .article-card {
        flex-direction: column;
    }
    
    .article-date {
        flex-direction: row;
        justify-content: center;
        gap: 0.5rem;
        padding: 1rem;
        min-width: auto;
    }
    
    .article-date .day {
        font-size: 1.2rem;
    }
    
    .article-date .month {
        font-size: 0.75rem;
    }
    
    .article-content {
        padding: 1.2rem;
    }
    
    .article-title a {
        font-size: 1.1rem;
        line-height: 1.4;
    }
}

@media (max-width: 480px) {
    .category-header h1 {
        font-size: 1.8rem;
    }
    
    .category-stats {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
}