/* ElectroSVG - メインスタイルシート */

/* リセットとベーススタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* ヘッダー */
.header {
    background: #fff;
    border-bottom: 1px solid #e1e5e9;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2563eb;
    text-decoration: none;
    line-height: 1;
}

.nav-tagline {
    font-size: 0.75rem;
    color: #9ca3af;
    font-weight: 400;
    margin-top: 0.125rem;
    line-height: 1;
}

/* ハンバーガーメニューボタン */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 101;
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background: #374151;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    color: #6b7280;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-menu a:hover {
    color: #2563eb;
}

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

/* ヒーローセクション */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    padding: 4rem 2rem;
}

.hero h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 検索ボックス */
.search-box {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
    background: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border: 1px solid #e5e7eb;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.75rem;
    font-size: 1rem;
    background: #f9fafb;
    transition: all 0.2s;
    color: #374151;
}

.search-input:focus {
    outline: none;
    border-color: #2563eb;
    background: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.category-filter {
    padding: 0.875rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.75rem;
    font-size: 1rem;
    background: #f9fafb;
    color: #374151;
    min-width: 150px;
    transition: all 0.2s;
    cursor: pointer;
}

.category-filter:focus {
    outline: none;
    border-color: #2563eb;
    background: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-button {
    padding: 0.875rem 2rem;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

.search-button:hover {
    background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.3);
}

.search-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

/* ページヘッダー */
.page-header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem 2rem;
    text-align: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 0 0 1rem 1rem;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #1f2937;
    font-weight: 700;
}

.category-description {
    font-size: 1.125rem;
    color: #6b7280;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* アイコングリッド */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* ホームページのセクション */
.featured-icons,
.categories {
    padding: 3rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.icon-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.2s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.icon-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #2563eb;
}

.icon-preview {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f9fafb;
    border-radius: 0.5rem;
    border: 1px solid #e5e7eb;
}

.icon-preview svg {
    width: 48px;
    height: 48px;
    color: #374151;
}

.icon-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.icon-card p {
    color: #6b7280;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    line-height: 1.5;
}

.icon-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: #2563eb;
    color: white;
    text-decoration: none;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background-color 0.2s;
}

.icon-link:hover {
    background: #1d4ed8;
}

/* タグ */
.icon-tags {
    margin-bottom: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    justify-content: center;
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: #f3f4f6;
    color: #374151;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
}

/* カテゴリグリッド */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.category-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.2s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.category-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #2563eb;
}

.category-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.category-card p {
    color: #6b7280;
    margin-bottom: 1rem;
}

.category-count {
    font-size: 0.875rem;
    color: #9ca3af;
    margin-bottom: 1rem;
}

.category-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: #10b981;
    color: white;
    text-decoration: none;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background-color 0.2s;
}

.category-link:hover {
    background: #059669;
}

/* アイコン詳細ページ */
.icon-detail {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.icon-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.icon-detail-header h1 {
    font-size: 2rem;
    color: #1f2937;
}

.download-btn {
    padding: 0.75rem 1.5rem;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.download-btn:hover {
    background: #1d4ed8;
}

.icon-preview-large {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem;
    background: #f9fafb;
    border-radius: 0.75rem;
    border: 1px solid #e5e7eb;
}

.icon-preview-large svg {
    width: 120px;
    height: 120px;
    color: #374151;
}

.icon-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.icon-description h2,
.icon-meta h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.icon-meta dl {
    display: grid;
    gap: 0.5rem;
}

.icon-meta dt {
    font-weight: 600;
    color: #374151;
}

.icon-meta dd {
    color: #6b7280;
    margin-left: 0;
}

.related-icons {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e5e7eb;
}

.related-icons h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #1f2937;
}

/* ページネーション */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 3rem 0;
    padding: 0 2rem;
}

.pagination-link {
    display: inline-block;
    padding: 0.5rem 0.75rem;
    background: white;
    color: #374151;
    text-decoration: none;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.pagination-link:hover {
    background: #f3f4f6;
    border-color: #9ca3af;
}

.pagination-current {
    display: inline-block;
    padding: 0.5rem 0.75rem;
    background: #2563eb;
    color: white;
    border: 1px solid #2563eb;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
}

/* ページコンテンツ */
.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.content-section {
    margin-bottom: 2rem;
}

.content-section h1 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    color: #1f2937;
}

.content-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.content-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #374151;
}

.content-section p {
    margin-bottom: 1rem;
    color: #4b5563;
    line-height: 1.7;
}

.content-section ul {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.content-section li {
    margin-bottom: 0.5rem;
    color: #4b5563;
}

/* フッター */
.footer {
    background: #f9fafb;
    border-top: 1px solid #e5e7eb;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: #6b7280;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
    padding: 0.25rem 0;
}

.footer-links a:hover {
    color: #2563eb;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    /* ハンバーガーメニューを表示 */
    .hamburger {
        display: flex;
    }
    
    /* ナビゲーションメニューを隠す */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: right 0.3s ease;
        z-index: 100;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu a {
        font-size: 1.5rem;
        font-weight: 600;
        color: #1f2937;
    }
    
    .nav-tagline {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .search-box {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        gap: 0.5rem;
    }
    
    .icon-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    
    .icon-info {
        grid-template-columns: 1fr;
    }
    
    .icon-detail-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .nav {
        padding: 0.75rem 1rem;
    }
    
    .hero {
        padding: 2rem 1rem;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .page-header {
        padding: 1rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .search-box {
        padding: 0.75rem;
    }
    
    .icon-detail {
        padding: 1rem;
    }
    
    .page-content {
        padding: 1rem;
    }
    
    .footer-content {
        padding: 1.5rem 1rem;
    }
}

/* ホームページのセクションタイトル */
.featured-icons h2,
.categories h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
    padding-bottom: 0.75rem;
}

.featured-icons h2::after,
.categories h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

/* カテゴリー一覧ページ */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    margin-bottom: 3rem;
}

.categories-grid .category-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.2s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.categories-grid .category-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #2563eb;
}

.category-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    color: #2563eb;
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-icon svg {
    width: 100%;
    height: 100%;
}

.categories-grid .category-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.categories-grid .category-card p {
    color: #6b7280;
    margin-bottom: 1rem;
}

.categories-grid .category-count {
    font-size: 0.875rem;
    color: #9ca3af;
    margin-bottom: 1rem;
}

.categories-grid .category-link {
    display: inline-block;
    background: #2563eb;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: background-color 0.2s;
}

.categories-grid .category-link:hover {
    background: #1d4ed8;
}

.category-info {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 2rem;
    margin: 3rem auto 0;
    max-width: 1200px;
}

.category-info h2 {
    font-size: 1.75rem;
    color: #1f2937;
    margin-bottom: 2rem;
    text-align: center;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.info-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #2563eb;
}

.info-item h3 {
    color: #1f2937;
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.info-item p {
    color: #6b7280;
    line-height: 1.6;
    margin: 0;
}