/* リセットとベーススタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    background: linear-gradient(135deg, #1e4d2b 0%, #2d7a3e 50%, #34a853 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #333;
}

.container {
    width: 100%;
    max-width: 900px;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

/* ヘッダー */
.header {
    background: linear-gradient(135deg, #2d7a3e 0%, #34a853 100%);
    color: white;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.header::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}

.title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
    letter-spacing: 4px;
}

.subtitle {
    font-size: 1.1rem;
    font-weight: 400;
    opacity: 0.95;
    position: relative;
    z-index: 1;
    letter-spacing: 2px;
}

/* メインコンテンツ */
.main-content {
    padding: 40px 30px;
}

.menu-nav {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* メニューボタン */
.menu-button {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px 30px;
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.menu-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(46, 125, 50, 0.2);
    border-color: #34a853;
    background: linear-gradient(135deg, #f1f8f4 0%, #ffffff 100%);
}

.menu-button:active {
    transform: translateY(-2px);
}

.button-icon {
    font-size: 2.5rem;
    min-width: 60px;
    text-align: center;
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    padding: 15px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.button-content {
    flex: 1;
}

.button-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e4d2b;
    margin-bottom: 5px;
}

.button-description {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.4;
}

/* フッター */
.footer {
    background: #f5f5f5;
    padding: 20px;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #e0e0e0;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .container {
        border-radius: 0;
    }

    .header {
        padding: 30px 20px;
    }

    .title {
        font-size: 2.5rem;
        letter-spacing: 2px;
    }

    .subtitle {
        font-size: 1rem;
    }

    .main-content {
        padding: 30px 20px;
    }

    .menu-button {
        flex-direction: column;
        text-align: center;
        padding: 20px;
        gap: 15px;
    }

    .button-icon {
        font-size: 2rem;
        min-width: 50px;
        padding: 12px;
    }

    .button-title {
        font-size: 1.1rem;
    }

    .button-description {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 2rem;
    }

    .menu-button {
        gap: 10px;
        padding: 15px;
    }

    .button-title {
        font-size: 1rem;
    }
}

/* アニメーション */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.menu-button {
    animation: fadeIn 0.5s ease forwards;
}

.menu-button:nth-child(1) { animation-delay: 0.1s; }
.menu-button:nth-child(2) { animation-delay: 0.15s; }
.menu-button:nth-child(3) { animation-delay: 0.2s; }
.menu-button:nth-child(4) { animation-delay: 0.25s; }
.menu-button:nth-child(5) { animation-delay: 0.3s; }
.menu-button:nth-child(6) { animation-delay: 0.35s; }
.menu-button:nth-child(7) { animation-delay: 0.4s; }