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

body {
    font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', 'Meiryo', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

/* ヘッダー */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('images/20250725.jpg') center/cover;
    opacity: 0.1;
    z-index: 1;
}

.header-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.event-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    letter-spacing: 0.05em;
}

.event-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

/* メインコンテンツ */
.main-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* セクション共通スタイル */
section {
    background: white;
    border-radius: 15px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.2);
}

section h2 {
    font-size: 1.8rem;
    color: #4a5568;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #667eea;
    position: relative;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 50px;
    height: 3px;
    background: #764ba2;
}

/* イベント情報 */
.event-info {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.event-info h2 {
    color: white;
    border-bottom-color: rgba(255,255,255,0.3);
}

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

.info-item {
    background: rgba(255,255,255,0.1);
    padding: 1.5rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

.info-item h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #f7fafc;
    font-weight: 600;
}

.info-item p {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.access {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 0.5rem;
}

.note {
    font-size: 0.9rem;
    color: #444444;
}

/* 出演者 */
.performer-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.performer-category {
    background: #f7fafc;
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #667eea;
}

.performer-category h3 {
    color: #4a5568;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
}

.performer-category ul {
    list-style: none;
}

.performer-category li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #e2e8f0;
    font-size: 1.1rem;
    color: #2d3748;
}

.performer-category li:last-child {
    border-bottom: none;
}

/* メッセージ */
.message {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.message h2 {
    color: white;
    border-bottom-color: rgba(255,255,255,0.3);
}

.message-content {
    font-size: 1.1rem;
    line-height: 1.8;
}

.message-content p {
    margin-bottom: 1.5rem;
    text-align: justify;
}

/* チケット情報 */
.tickets {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.tickets h2 {
    color: white;
    border-bottom-color: rgba(255,255,255,0.3);
}

.contact-info {
    background: rgba(255,255,255,0.1);
    padding: 2rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

.contact-info h3 {
    font-size: 1.3rem;
    color: #011e31;
}

.contact-info p {
    font-size: 1.1rem;
}

.contact-info strong {
    color: #f7fafc;
}

/* 主催 */
.organizer {
    background: #2d3748;
    color: white;
    text-align: center;
}

.organizer h2 {
    color: white;
    border-bottom-color: rgba(255,255,255,0.3);
}

.organizer p {
    font-size: 1.2rem;
    font-weight: 500;
}
/* 主催 */
.organizer {
    background: #2d3748;
    color: white;
    text-align: center;
}

.organizer h2 {
    color: white;
    border-bottom-color: rgba(255,255,255,0.3);
}

.organizer p {
    font-size: 1.2rem;
    font-weight: 500;
}
/* フッター */
.footer {
    background: #2d3748;
    color: white;
    padding: 2rem;
    text-align: center;
    margin-top: 3rem;
}

.footer-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.back-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: #764ba2;
}

/* イベント画像 */
.event-image {
    max-width: 600px;
    width: 100%;
    height: auto;
    border-radius: 15px;
    margin-bottom: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    border: 3px solid rgba(255,255,255,0.3);
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .header {
        padding: 2rem 1rem;
    }
    
    .event-image {
        max-width: 100%;
        margin-bottom: 1.5rem;
    }
    
    .event-title {
        font-size: 2rem;
    }
    
    .event-subtitle {
        font-size: 1rem;
    }
    
    .main-content {
        padding: 2rem 1rem;
    }
    
    section {
        padding: 1.5rem;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .performer-list {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .event-image {
        max-width: 100%;
        margin-bottom: 1rem;
        border-radius: 10px;
    }
    
    .event-title {
        font-size: 1.5rem;
    }
    
    .event-subtitle {
        font-size: 0.9rem;
    }
    
    section h2 {
        font-size: 1.5rem;
    }
    
    .info-item, .performer-category {
        padding: 1rem;
    }
}

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

section {
    animation: fadeInUp 0.6s ease-out;
}

/* ホバーエフェクト */
.info-item:hover,
.performer-category:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

/* スクロールバー */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #764ba2;
}

/* 閉じるボタン */
.close-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.close-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.close-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .close-button {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .close-button {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
}

/* リンクスタイル */
a {
    color: #667eea;
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* 申し込みリンク専用スタイル */
.info-item a {
    display: inline-block;
    background: linear-gradient(135deg, #352b70 0%, #352b70 100%);
    color: white;
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(65, 65, 65, 0.3);
    margin: 0.5rem 0;
}

.info-item a:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
    color: white;
    text-decoration: none;
}

.info-item a:active {
    transform: translateY(0);
}