/* 基本設定 */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --background: #f8fafc;
    --surface: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ヘッダー */
.header {
    background-color: var(--surface);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-image {
    height: 40px;
    width: auto;
}

.logo h1 {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 700;
    margin: 0;
}

.nav {
    display: flex;
    gap: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
}

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

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

.header-actions {
    display: flex;
    gap: 12px;
}

.search-btn {
    width: 40px;
    height: 40px;
    border: none;
    background-color: var(--background);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--text-secondary);
}

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

/* 検索オーバーレイ */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 200;
    display: none;
    animation: fadeIn 0.3s;
}

.search-overlay.active {
    display: block;
}

.search-container {
    max-width: 600px;
    margin: 100px auto 20px;
    padding: 0 20px;
    display: flex;
    gap: 12px;
}

.search-input {
    flex: 1;
    padding: 16px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    box-shadow: var(--shadow-lg);
}

.search-close {
    width: 50px;
    height: 50px;
    border: none;
    background-color: var(--surface);
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 20px;
    transition: var(--transition);
}

.search-close:hover {
    background-color: #ef4444;
    color: white;
}

.search-results {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 20px;
    max-height: 60vh;
    overflow-y: auto;
}

/* メインコンテンツ */
.main {
    min-height: calc(100vh - 200px);
    padding: 40px 0;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s;
}

/* セクション */
.section {
    margin-bottom: 48px;
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

/* ピックアップグリッド */
.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.featured-card {
    background-color: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
}

.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.featured-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 48px;
}

.featured-content {
    padding: 20px;
}

.featured-category {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 8px;
}

.featured-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.featured-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.featured-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-secondary);
}

.featured-author {
    display: flex;
    align-items: center;
    gap: 6px;
}

.featured-stats {
    display: flex;
    gap: 12px;
}

/* カテゴリグリッド */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}

.category-card {
    background-color: var(--surface);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    background-color: var(--primary-color);
    color: white;
}

.category-icon {
    font-size: 36px;
    margin-bottom: 12px;
    color: var(--primary-color);
    transition: var(--transition);
}

.category-card:hover .category-icon {
    color: white;
}

.category-name {
    font-size: 16px;
    font-weight: 600;
}

/* 2カラムレイアウト */
.two-column-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 32px;
}

/* 記事グリッド */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.article-card {
    background-color: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

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

.article-image {
    width: 100%;
    height: 160px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 36px;
}

.article-content {
    padding: 16px;
}

.article-category {
    display: inline-block;
    padding: 3px 10px;
    background-color: var(--background);
    color: var(--primary-color);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    margin-bottom: 8px;
}

.article-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: var(--text-secondary);
}

.article-stats {
    display: flex;
    gap: 10px;
}

/* サイドバー */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-card {
    background-color: var(--surface);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.sidebar-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.recruitment-content {
    text-align: center;
}

.recruitment-content p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

/* 掲示板プレビュー */
.board-preview {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.board-preview-item {
    padding: 12px;
    background-color: var(--background);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.board-preview-item:hover {
    background-color: #e2e8f0;
}

.board-preview-type {
    display: inline-block;
    padding: 2px 8px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 3px;
    font-size: 10px;
    margin-bottom: 4px;
}

.board-preview-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.board-preview-date {
    font-size: 11px;
    color: var(--text-secondary);
}

.view-more {
    display: block;
    text-align: center;
    margin-top: 12px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

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

/* タグリスト */
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 6px 14px;
    background-color: var(--surface);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

/* ページヘッダー */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.page-title {
    font-size: 28px;
    font-weight: 700;
}

.filter-controls {
    display: flex;
    gap: 12px;
}

.filter-select, .search-filter {
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--surface);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:hover, .search-filter:hover {
    border-color: var(--primary-color);
}

.search-filter {
    min-width: 250px;
}

/* 記事リスト */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.article-list-item {
    background-color: var(--surface);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

.article-list-item:hover {
    box-shadow: var(--shadow-md);
}

.article-list-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 12px;
}

.article-list-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.article-list-excerpt {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 16px;
}

.article-list-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.article-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.article-tag {
    padding: 4px 10px;
    background-color: var(--background);
    color: var(--text-secondary);
    border-radius: 4px;
    font-size: 12px;
}

/* 社員グリッド */
.employee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.employee-card {
    background-color: var(--surface);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
}

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

.employee-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
    margin: 0 auto 16px;
}

.employee-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
}

.employee-position {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 4px;
}

.employee-department {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 12px;
}

.employee-contact {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

.employee-contact a {
    color: var(--primary-color);
    text-decoration: none;
}

/* 掲示板 */
.filter-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
    overflow-x: auto;
}

.tab-btn {
    padding: 12px 20px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.board-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.board-item {
    background-color: var(--surface);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

.board-item:hover {
    box-shadow: var(--shadow-md);
}

.board-item-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 12px;
}

.board-item-type {
    padding: 4px 12px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.board-item-status {
    padding: 4px 12px;
    background-color: #10b981;
    color: white;
    border-radius: 4px;
    font-size: 12px;
}

.board-item-status.closed {
    background-color: var(--secondary-color);
}

.board-item-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.board-item-content {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.board-item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-secondary);
}

/* ボタン */
.btn-primary {
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    padding: 10px 20px;
    background-color: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

/* モーダル */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 300;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: var(--surface);
    border-radius: var(--radius);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 20px;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background-color: var(--background);
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
}

/* フォーム */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

/* フッター */
.footer {
    background-color: var(--surface);
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    margin-top: 60px;
}

.footer p {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

/* アニメーション */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* レスポンシブ */
@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }
    
    .logo-image {
        height: 32px;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    .nav {
        order: 3;
        width: 100%;
        margin-top: 12px;
        overflow-x: auto;
    }
    
    .two-column-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        order: -1;
    }
    
    .featured-grid,
    .article-grid,
    .employee-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .filter-controls {
        width: 100%;
        flex-wrap: wrap;
    }
    
    .filter-select, .search-filter {
        flex: 1;
        min-width: 150px;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 20px;
    }
    
    .nav-link {
        font-size: 12px;
        padding: 8px 12px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .page-title {
        font-size: 24px;
    }
}