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

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

a {
    text-decoration: none;
    color: #0066cc;
    transition: color 0.3s;
}

a:hover {
    color: #004499;
}

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

/* ヘッダー */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #333;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: #333;
    font-weight: 500;
}

nav ul li a:hover {
    color: #0066cc;
}

/* ヒーローセクション */
.hero {
    padding: 100px 0;
    background-color: #e6f2ff;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #222;
}

.hero p {
    font-size: 20px;
    max-width: 700px;
    margin: 0 auto 30px;
    color: #555;
}

.btn {
    display: inline-block;
    background-color: #0066cc;
    color: white;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #004499;
    color: white;
}

/* セクション共通 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: #222;
}

.section-title p {
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

/* スキルセクション */
.skills {
    background-color: #fff;
}

.skills-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.skill-card {
    background-color: #f5f5f5;
    border-radius: 8px;
    padding: 30px;
    width: 300px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.skill-card:hover {
    transform: translateY(-5px);
}

.skill-card h3 {
    margin: 15px 0;
    color: #333;
}

.skill-icon {
    font-size: 40px;
    color: #0066cc;
}

/* プロジェクトセクション */
.projects {
    background-color: #f5f5f5;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-image {
    height: 200px;
    background-color: #e6e6e6;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
}

.project-info {
    padding: 25px;
}

.project-info h3 {
    margin-bottom: 10px;
    color: #333;
}

.project-info p {
    color: #666;
    margin-bottom: 15px;
}

.project-link {
    font-weight: bold;
}

/* お問い合わせセクション */
.contact {
    background-color: #fff;
}

.contact-container {
    display: flex;
    justify-content: space-between;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    margin-bottom: 20px;
    color: #333;
}

.contact-info p {
    margin-bottom: 30px;
    color: #666;
}

.contact-links a {
    display: block;
    margin-bottom: 15px;
    color: #0066cc;
}

.contact-form {
    flex: 1;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 16px;
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

/* フッター */
footer {
    background-color: #333;
    color: #fff;
    padding: 50px 0;
    text-align: center;
}

.footer-content {
    margin-bottom: 30px;
}

.social-links {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.social-links a {
    display: inline-block;
    margin: 0 10px;
    color: #fff;
    font-size: 20px;
}

.copyright {
    color: #aaa;
    font-size: 14px;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
    }
    
    nav ul {
        margin-top: 20px;
    }
    
    nav ul li {
        margin-left: 15px;
        margin-right: 15px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .contact-container {
        flex-direction: column;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
}