/* 基本スタイルとリセット */
body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.7;
    background-color: #f4f7f9;
    color: #333;
    margin: 0;
}

h1, h2, h3 {
    font-weight: 700;
    color: #2c3e50;
}

a {
    color: #3498db;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ヘッダー */
header {
    background-color: #34495e;
    color: #ffffff;
    padding: 2rem 1rem;
    text-align: center;
    border-bottom: 5px solid #3498db;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
    color: #ffffff;
}

header p {
    margin-top: 0.5rem;
    font-size: 1.1rem;
    opacity: 0.9;
}

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

section {
    margin-bottom: 3rem;
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: #3498db;
    border-radius: 2px;
}

/* カードレイアウト */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.card {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
}

.card h3 {
    margin-top: 1rem;
    font-size: 1.5rem;
}

.card p {
    flex-grow: 1;
}

.card ul {
    padding-left: 1.2rem;
    font-size: 0.95rem;
}

.card li {
    margin-bottom: 0.5rem;
}

.logo {
    display: block;
    margin: 0 auto;
    height: 70px;
    width: auto;
    object-fit: contain;
}

/* Next.jsのロゴは白背景だと見えにくいので調整 */
.nextjs-logo {
    filter: invert(1);
}

/* 比較表 */
.table-container {
    overflow-x: auto; /* スマホで表がはみ出す場合、横スクロール可能にする */
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 0.8rem 1rem;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

th {
    background-color: #ecf0f1;
    font-weight: 700;
}

tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

tbody tr:hover {
    background-color: #f1f8ff;
}

/* フッター */
footer {
    text-align: center;
    padding: 1.5rem 1rem;
    margin-top: 2rem;
    background-color: #2c3e50;
    color: #bdc3c7;
    font-size: 0.9rem;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    section {
        padding: 1.5rem;
    }
}