/* 全体の基本スタイル */
body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    margin: 0;
    line-height: 1.6;
}

header {
    text-align: center;
    padding: 20px;
    background-color: #fff;
    border-bottom: 1px solid #ddd;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

main {
    padding: 20px;
}

/* シリーズギャラリー */
#series-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    padding: 20px 0;
}

.series-item {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.series-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.series-item img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.series-item h2 {
    margin: 15px;
    font-size: 1.2rem;
    color: #007bff;
}

/* オーバーレイとモーダルウィンドウ */
#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: none; /* 初期状態では非表示 */
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

#parts-list-container {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    width: 90%;
    max-width: 800px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

#close-button {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 2rem;
    border: none;
    background: transparent;
    cursor: pointer;
    color: #333;
}

#parts-list-title {
    font-size: 1.5rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

#parts-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.part-item {
    background-color: #f8f9fa;
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.part-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
}

.part-item img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: cover;
}

.part-item h3 {
    margin: 10px;
    font-size: 1rem;
    color: #555;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #333;
    color: #fff;
}