/* app/static/css/style.css */

/* 基本スタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ナビゲーションバー */
.navbar {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #3498db;
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #2980b9;
}

.btn-primary {
    background-color: #27ae60;
}

.btn-primary:hover {
    background-color: #229954;
}

.btn-danger {
    background-color: #e74c3c;
}

.btn-danger:hover {
    background-color: #c0392b;
}

/* 投稿グリッド */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.post-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.post-card h2 {
    margin-bottom: 1rem;
}

.post-card a {
    color: #2c3e50;
    text-decoration: none;
}

.post-card a:hover {
    color: #3498db;
}

.post-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1rem;
}

/* アラート */
.alert {
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 4px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* フッター */
.footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

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

.pagination a, .pagination .current {
    padding: 0.5rem 0.75rem;
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    text-decoration: none;
    color: #2c3e50;
}

.pagination .current {
    background-color: #3498db;
    color: white;
}

/* Heroセクション */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.1)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

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

/* Aboutページ */
.about-page {
    padding: 60px 0;
    background-color: #f8f9fa;
    min-height: calc(100vh - 200px);
}

.about-card {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.about-section {
    margin-bottom: 2.5rem;
}

.about-section h2 {
    color: #2c3e50;
    font-size: 1.75rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid #3498db;
    padding-bottom: 0.5rem;
}

.about-section h2 i {
    margin-right: 0.5rem;
    color: #3498db;
}

.about-section p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #555;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tech-stack .badge {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 0.5rem 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
}

.feature-list li i {
    margin-right: 0.75rem;
    width: 20px;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .about-card {
        padding: 2rem;
    }
    
    .about-section h2 {
        font-size: 1.5rem;
    }
}