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

body {
    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* ヘッダー */
header {
    background-color: #fff;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 2.5rem;
    color: #333;
}

/* メインコンテンツ */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* 制作実績グリッド */
.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

/* 制作実績カード */
.work-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.work-item:hover {
    transform: translateY(-5px);
}

/* サムネイル画像 */
.work-image {
    display: block;
    position: relative;
    padding-top: 150%; /* 2:3の比率 */
    overflow: hidden;
}

.work-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.work-image:hover img {
    transform: scale(1.05);
}

/* 制作実績情報 */
.work-info {
    padding: 1.5rem;
}

.work-info h2 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.work-info h2 a {
    color: #333;
    text-decoration: none;
}

.work-info h2 a:hover {
    color: #666;
}

.client {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

/* タグ */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: #f0f0f0;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    color: #666;
}

/* SNSリンク */
.social-links {
    margin-top: 1rem;
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.social-links a {
    color: #333;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    background-color: #f0f0f0;
    transition: background-color 0.3s ease;
}

.social-links a:hover {
    background-color: #e0e0e0;
}

.social-links img {
    width: 20px;
    height: 20px;
}

/* フッター */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

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

    .work-info {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    header {
        padding: 1.5rem;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .works-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}