/* カラーパレット */
:root {
    --sky-blue: #4DA8E8;
    --sunshine-orange: #FF9C4A;
    --grass-green: #7BC74D;
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --soft-gray: #F5F7FA;
    --pastel-blue: #E8F4FD;
    --pastel-orange: #FFF0E6;
    --pastel-green: #F0F9E8;
    --dark-gray: #333333;
    --text-dark: #2C3E50;
    --text-light: #5A6C7D;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    scroll-behavior: smooth;
    background-color: var(--white);
}

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

/* ヘッダー */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--sky-blue);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    padding: 0.5rem 0;
    position: relative;
}

.nav a:hover {
    color: var(--sky-blue);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--sky-blue);
    transition: width 0.3s ease;
}

.nav a:hover::after {
    width: 100%;
}

/* メインビジュアル */
.hero {
    background: var(--white);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    color: white;
    position: relative;
    margin-top: 0;
    padding-top: 80px;
}

.hero-image-container {
    width: 100%;
    max-width: 1200px;
}

.hero-image {
    width: 100%;
    height: auto;
    display: block;
}

.hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 600px;
    padding: 2rem;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    padding: 0 2rem 4rem 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 1.2rem 2.5rem;
    border: none;
    border-radius: 60px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    letter-spacing: 0.02em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--sunshine-orange), #FF8A35);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 156, 74, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #FF8A35, var(--sunshine-orange));
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 156, 74, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.95);
    color: var(--sky-blue);
    border: 2px solid var(--sky-blue);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.btn-secondary:hover {
    background: var(--sky-blue);
    color: white;
    border: 2px solid var(--sky-blue);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(77, 168, 232, 0.3);
}

/* セクション共通 */
.section-title {
    text-align: center;
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 4rem;
    color: var(--text-dark);
    position: relative;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--sky-blue), var(--grass-green));
    margin: 1.5rem auto;
    border-radius: 2px;
}

/* イベントの目的セクション */
.event-purpose-section {
    padding: 80px 0;
    background: white;
}

.purpose-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.purpose-content p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-dark);
}

/* イベントの楽しみ方セクション */
.enjoyment-section {
    padding: 80px 0;
    background: var(--soft-gray);
}

.enjoyment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.enjoyment-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.enjoyment-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.enjoyment-card .card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.enjoyment-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--sky-blue);
    font-weight: 700;
}

.enjoyment-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-light);
}

/* イベント詳細セクション */
.event-details-section {
    padding: 80px 0;
    background: #F0F8FF;
}

.details-table-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.details-table {
    width: 100%;
    border-collapse: collapse;
}

.details-table th,
.details-table td {
    padding: 1.5rem 2rem;
    text-align: left;
    border-bottom: 1px solid #E0E0E0;
}

.details-table th {
    background-color: var(--sky-blue);
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
    width: 30%;
}

.details-table td {
    font-size: 1rem;
    color: var(--text-dark);
    line-height: 1.6;
}

.details-table tr:last-child th,
.details-table tr:last-child td {
    border-bottom: none;
}

/* 体験内容 */
.activities {
    padding: 120px 0;
    background: white;
}

.activities-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.activity-card {
    background: white;
    padding: 3rem 2.5rem;
    border-radius: 24px;
    text-align: center;
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.activity-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--sky-blue);
    border-radius: 24px 24px 0 0;
}

.activity-card[data-area="A"]::before { 
    background: linear-gradient(90deg, var(--sky-blue), #6BC8F1); 
}
.activity-card[data-area="B"]::before { 
    background: linear-gradient(90deg, var(--grass-green), #98D470); 
}
.activity-card[data-area="C"]::before { 
    background: linear-gradient(90deg, var(--sunshine-orange), #FFB366); 
}
.activity-card[data-area="D"]::before { 
    background: linear-gradient(90deg, #E74C3C, #F1706B); 
}

.activity-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.activity-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.activity-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.activity-card p {
    font-size: 1rem;
    line-height: 1.6;
    color: #666;
}


/* アクセス情報 */
.access {
    padding: 120px 0;
    background: var(--soft-gray);
}

.access-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.access-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--sky-blue);
}

.access-info address {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    font-style: normal;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.transport-info h4 {
    font-size: 1.2rem;
    margin: 2rem 0 1rem 0;
    color: var(--grass-green);
}

.transport-info ul {
    list-style: none;
    margin-left: 0;
}

.transport-info li {
    background: white;
    padding: 1rem;
    margin: 0.5rem 0;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.map-container {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    position: relative;
    width: 100%;
    height: 450px;
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* お問い合わせ */
.contact {
    padding: 120px 0;
    background: white;
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--sky-blue);
}

.contact-item {
    display: flex;
    align-items: center;
    background: var(--light-gray);
    padding: 1.5rem;
    margin: 1rem 0;
    border-radius: 10px;
    gap: 1rem;
}

.contact-label {
    font-weight: bold;
    min-width: 80px;
    color: var(--grass-green);
}

.contact-value {
    font-size: 1.1rem;
}

/* フッター */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--sky-blue);
}

.footer-logo p {
    opacity: 0.8;
}

.footer-links h4 {
    margin-bottom: 1rem;
    color: var(--grass-green);
}

.footer-links ul {
    list-style: none;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    line-height: 2;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--sky-blue);
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 1rem;
    text-align: center;
    opacity: 0.6;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .header .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
    }
    
    .nav ul {
        gap: 1rem;
    }
    
    .hero {
        padding-top: 80px;
    }
    
    .hero-content {
        padding: 1.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary, .btn-secondary {
        width: 200px;
    }
    
    .header {
        padding: 0.7rem 0;
    }
    
    .header .container {
        gap: 0.5rem;
    }
    
    .logo {
        font-size: 1rem;
        line-height: 1.3;
        flex: 1;
    }
    
    .nav {
        flex-shrink: 0;
    }
    
    .nav ul {
        gap: 0.4rem;
        flex-wrap: nowrap;
        justify-content: flex-end;
    }
    
    .nav a {
        font-size: 0.7rem;
        padding: 0.3rem 0.4rem;
        white-space: nowrap;
    }
    
    .hero {
        min-height: auto;
        padding-top: 0;
    }
    
    .cta-buttons {
        gap: 0.8rem;
        margin-top: 0.5rem;
    }
    
    .btn-primary, .btn-secondary {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
        width: 85%;
        max-width: 280px;
    }
    
    .enjoyment-grid {
        grid-template-columns: 1fr;
    }
    
    .details-table th,
    .details-table td {
        padding: 1rem;
        font-size: 0.9rem;
    }
    
    .details-table-wrapper {
        margin: 0 1rem;
    }
    
    .map-container {
        height: 300px;
        margin: 0 1rem;
    }
    
    .activities-grid {
        grid-template-columns: 1fr;
    }
    
    .access-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0.7rem 0;
    }
    
    .header .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 0.5rem;
    }
    
    .hero {
        padding-top: 70px;
    }
    
    .hero-content {
        padding: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .event-purpose-section,
    .enjoyment-section,
    .event-details-section {
        padding: 60px 0;
    }
    
    .purpose-content p {
        font-size: 1rem;
    }
    
    .enjoyment-card {
        padding: 2rem 1.5rem;
    }
    
    .details-table th {
        font-size: 0.85rem;
        width: 35%;
    }
    
    .details-table td {
        font-size: 0.85rem;
    }
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.about-card, .activity-card {
    animation: fadeInUp 0.6s ease-out;
}

/* スクロール時のアニメーション */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}