/* リセットCSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* ナビゲーション */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.nav-brand {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-brand:hover {
    color: #f0f0f0;
}

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

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #f0f0f0;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* メインコンテンツ */
.main-content {
    min-height: calc(100vh - 140px);
    padding: 2rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* フラッシュメッセージ */
.flash-messages {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.flash-message {
    background: #d4edda;
    color: #155724;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #c3e6cb;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

/* ヒーローセクション */
.hero {
    text-align: center;
    padding: 3rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: #ff6b6b;
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background: #ff5252;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
}

.btn-secondary {
    background: #6c757d;
}

.btn-secondary:hover {
    background: #5a6268;
}

/* フィルターセクション */
.filters {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.filter-form {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: #555;
}

.form-control {
    padding: 0.5rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
}

/* サービスカード */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.service-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.service-card-header {
    padding: 1.5rem;
    border-bottom: 1px solid #f0f0f0;
}

.service-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.service-author {
    color: #666;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-card-body {
    padding: 1.5rem;
}

.service-description {
    color: #555;
    margin-bottom: 1rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.service-challenge {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border-left: 4px solid #667eea;
}

.service-challenge strong {
    color: #667eea;
}

.service-card-footer {
    padding: 1rem 1.5rem;
    background: #f8f9fa;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.service-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    font-size: 0.9rem;
    color: #666;
}

.upvote-btn {
    background: #28a745;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.upvote-btn:hover {
    background: #218838;
    transform: scale(1.05);
}

.upvote-btn:disabled {
    background: #6c757d;
    cursor: not-allowed;
    transform: none;
}

/* ページネーション */
.pagination {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
}

.pagination a, .pagination span {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    color: #667eea;
    border: 2px solid #667eea;
    transition: all 0.3s ease;
}

.pagination a:hover {
    background: #667eea;
    color: white;
}

.pagination .current {
    background: #667eea;
    color: white;
}

/* フォーム */
.form-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.form-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    color: #333;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
}

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

.file-upload {
    border: 2px dashed #e9ecef;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: border-color 0.3s ease;
}

.file-upload:hover {
    border-color: #667eea;
}

.file-upload input[type="file"] {
    display: none;
}

.file-upload-label {
    cursor: pointer;
    color: #667eea;
    font-weight: 500;
}

/* サービス詳細ページ */
.service-detail {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.service-detail-header {
    padding: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.service-detail-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.service-detail-author {
    font-size: 1.1rem;
    opacity: 0.9;
}

.service-detail-body {
    padding: 2rem;
}

.service-detail-section {
    margin-bottom: 2rem;
}

.service-detail-section h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.screenshot {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

/* 管理者ページ */
.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.admin-table {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.admin-table table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

.admin-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #555;
}

.btn-danger {
    background: #dc3545;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

.btn-danger:hover {
    background: #c82333;
}

/* フッター */
.footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .filter-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-container {
        margin: 0 1rem;
        padding: 1.5rem;
    }
    
    .service-detail-title {
        font-size: 2rem;
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-table {
        overflow-x: auto;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
}

@media (min-width: 769px) and (max-width: 1020px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 1021px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

.service-card {
    animation: fadeIn 0.6s ease-out;
}

/* ローディング状態 */
.loading {
    text-align: center;
    padding: 2rem;
    color: #666;
}

.loading i {
    font-size: 2rem;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}