* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, 'Noto Sans JP', sans-serif;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 25%, #e3f2fd 50%, #bbdefb 75%, #90caf9 100%);
    background-attachment: fixed;
    color: #333333;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ヘッダー */
header {
    background: linear-gradient(135deg, #1565c0 0%, #1976d2 25%, #1e88e5 50%, #2196f3 75%, #42a5f5 100%);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(15px);
    box-shadow: 0 8px 32px rgba(30, 136, 229, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: #ffffff;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ffffff;
    transition: width 0.3s ease;
}

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

/* ヒーローセクション */
.hero {
    margin-top: 80px;
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    background: linear-gradient(135deg, #e8f4fd 0%, #d1e7dd 25%, #bbdefb 50%, #90caf9 75%, #64b5f6 100%);
    position: relative;
    overflow: hidden;
    padding-top: 40px;
}

.hero-image {
    width: 100%;
    max-width: 100%;
    height: auto;
    object-fit: contain;
    margin-bottom: 30px;
    border-radius: 0;
    box-shadow: 0 20px 60px rgba(30, 136, 229, 0.3);
    z-index: 1;
}

.hero-content {
    text-align: center;
    z-index: 2;
    padding: 0 20px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 254, 0.95) 100%);
    border-radius: 30px;
    padding: 50px;
    box-shadow: 0 20px 60px rgba(30, 136, 229, 0.2);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    margin-top: 20px;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    margin-bottom: 20px;
    background: linear-gradient(135deg, #1565c0 0%, #1976d2 25%, #1e88e5 50%, #2196f3 75%, #42a5f5 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
    font-weight: 800;
}

.hero p {
    font-size: 1.4rem;
    color: #555555;
    margin-bottom: 30px;
}

.social-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.social-btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tiktok-btn {
    background: linear-gradient(135deg, #333333, #666666);
    color: white;
    border: 2px solid transparent;
}

.tiktok-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.x-btn {
    background: #000000;
    color: white;
    border: 2px solid #333;
}

.x-btn:hover {
    border-color: #1e88e5;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.3);
}

/* コンテンツセクション */
.content-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    background: linear-gradient(135deg, #1565c0 0%, #1976d2 25%, #1e88e5 50%, #2196f3 75%, #42a5f5 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    padding-bottom: 15px;
    font-weight: 700;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 4px;
    background: linear-gradient(90deg, #1565c0 0%, #1976d2 25%, #1e88e5 50%, #2196f3 75%, #42a5f5 100%);
    border-radius: 2px;
    box-shadow: 0 2px 10px rgba(30, 136, 229, 0.3);
}

/* ニュース・ライブ情報セクション */
.news-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.news-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

.news-tab {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid #2196f3;
    border-radius: 25px;
    color: #2196f3;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.news-tab:hover {
    background: rgba(33, 150, 243, 0.1);
}

.news-tab.active {
    background: linear-gradient(135deg, #2196f3, #42a5f5);
    color: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
    justify-content: center;
}

.news-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(33, 150, 243, 0.1);
    width: 100%;
    max-width: 400px;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(33, 150, 243, 0.15);
}

.news-card-image {
    width: 100%;
    height: 200px;
    object-fit: contain;
    background: #f5f5f5;
}

.news-card-content {
    padding: 20px;
    max-height: 350px;
    overflow-y: auto;
}

.news-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.news-category-label {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.category-news {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    color: #1565c0;
}

.category-live {
    background: linear-gradient(135deg, #fff3e0, #ffe0b2);
    color: #e65100;
}

.category-media {
    background: linear-gradient(135deg, #f3e5f5, #e1bee7);
    color: #6a1b9a;
}

.news-date {
    color: #666;
    font-size: 12px;
}

.news-card-title {
    font-size: 18px;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
}

.news-card-text {
    color: #555;
    line-height: 1.6;
    margin-bottom: 15px;
    max-height: 150px;
    overflow-y: auto;
    padding-right: 5px;
}

.news-event-info {
    background: linear-gradient(135deg, #f5f5f5, #eeeeee);
    padding: 12px;
    border-radius: 8px;
    margin: 15px 0;
}

.event-date, .event-venue {
    color: #555;
    font-size: 14px;
    margin: 5px 0;
}

.news-ticket-btn {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b6b, #ff8787);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.news-ticket-btn:hover {
    background: linear-gradient(135deg, #ff5252, #ff6b6b);
    transform: translateX(5px);
}

.news-loading {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(33, 150, 243, 0.2);
    border-top: 4px solid #2196f3;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.no-news, .error-message {
    text-align: center;
    padding: 40px;
    color: #666;
    font-size: 16px;
}

.error-message {
    color: #f44336;
}

/* Tシャツ販売バナー */
.merch-section {
    background: linear-gradient(135deg, #1565c0 0%, #1976d2 20%, #1e88e5 40%, #2196f3 60%, #42a5f5 80%, #64b5f6 100%);
    padding: 80px 20px;
    margin: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.merch-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    z-index: 0;
}

.merch-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.merch-title {
    font-size: 2.5rem;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.merch-description {
    font-size: 1.2rem;
    color: #ffffff;
    margin-bottom: 30px;
    opacity: 0.95;
}

.merch-banner {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 50%, #f0f7ff 100%);
    border-radius: 30px;
    padding: 50px;
    box-shadow: 0 30px 80px rgba(30, 136, 229, 0.3);
    margin-bottom: 40px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(20px);
    position: relative;
    z-index: 1;
}

.merch-image {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 10px;
    margin-bottom: 20px;
}

.merch-info {
    color: #333333;
}

.merch-product-name {
    font-size: 1.8rem;
    color: #1e88e5;
    margin-bottom: 10px;
}

.merch-price {
    font-size: 1.5rem;
    color: #333333;
    font-weight: bold;
    margin-bottom: 20px;
}

.merch-btn {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(135deg, #1e88e5, #42a5f5);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(30, 136, 229, 0.3);
}

.merch-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.5);
}

/* 特徴セクション */
.about-content {
    margin-bottom: 40px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.about-item {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 50%, #f0f7ff 100%);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(30, 136, 229, 0.1);
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.1);
}

.about-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(30, 136, 229, 0.2);
    border-color: rgba(30, 136, 229, 0.3);
}

.about-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.about-item h3 {
    color: #1e88e5;
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.about-item p {
    color: #555555;
    line-height: 1.6;
}

/* 実績・経歴セクション */
.achievements-content {
    max-width: 800px;
    margin: 0 auto;
}

.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #1e88e5 0%, #42a5f5 100%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 100%);
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.1);
    border: 1px solid rgba(30, 136, 229, 0.1);
    transition: all 0.3s ease;
}

.timeline-item:hover {
    transform: translateX(10px);
    box-shadow: 0 15px 40px rgba(30, 136, 229, 0.2);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -35px;
    top: 30px;
    width: 12px;
    height: 12px;
    background: #1e88e5;
    border-radius: 50%;
    border: 3px solid #ffffff;
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.3);
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: bold;
    color: #1e88e5;
    margin-bottom: 10px;
}

.timeline-content h4 {
    color: #333333;
    font-size: 1.2rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.timeline-content p {
    color: #555555;
    line-height: 1.6;
    margin: 0;
}

/* 詳細実績セクション */
.achievements-details {
    margin-top: 50px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 50%, #f0f7ff 100%);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(30, 136, 229, 0.1);
    box-shadow: 0 15px 40px rgba(30, 136, 229, 0.1);
}

.achievements-details h3 {
    color: #1e88e5;
    font-size: 1.8rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 2px solid rgba(30, 136, 229, 0.2);
    padding-bottom: 15px;
}

.achievements-category {
    margin-bottom: 30px;
}

.achievements-category:last-child {
    margin-bottom: 0;
}

.category-title {
    color: #1e88e5;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    background: rgba(30, 136, 229, 0.1);
    padding: 10px 15px;
    border-radius: 10px;
    border-left: 4px solid #1e88e5;
}

.achievements-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.achievements-list li {
    background: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
    padding: 12px 15px;
    border-radius: 8px;
    border-left: 3px solid rgba(30, 136, 229, 0.3);
    color: #555555;
    line-height: 1.5;
    transition: all 0.3s ease;
}

.achievements-list li:hover {
    background: rgba(30, 136, 229, 0.05);
    border-left-color: #1e88e5;
    transform: translateX(5px);
}

/* 活動拠点セクション */
.venue-content {
    max-width: 800px;
    margin: 0 auto;
}

.venue-info {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 50%, #f0f7ff 100%);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(30, 136, 229, 0.1);
    box-shadow: 0 15px 40px rgba(30, 136, 229, 0.1);
}

.venue-info h3 {
    color: #1e88e5;
    font-size: 1.8rem;
    margin-bottom: 25px;
    font-weight: 600;
    text-align: center;
}

.venue-details {
    margin-bottom: 25px;
}

.venue-detail {
    margin-bottom: 12px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(30, 136, 229, 0.1);
    color: #333333;
    line-height: 1.5;
}

.venue-detail:last-child {
    border-bottom: none;
}

.venue-detail strong {
    color: #1e88e5;
    font-weight: 600;
    display: inline-block;
    min-width: 100px;
}

.venue-description {
    color: #555555;
    line-height: 1.7;
    text-align: center;
    font-size: 1.1rem;
    background: rgba(30, 136, 229, 0.05);
    padding: 20px;
    border-radius: 10px;
    margin: 0;
}

/* メンバー詳細情報 */
.member-details {
    margin-top: 20px;
    text-align: left;
    background: rgba(30, 136, 229, 0.05);
    padding: 20px;
    border-radius: 15px;
}

.member-details p {
    margin: 8px 0;
    color: #555555;
    font-size: 0.95rem;
    line-height: 1.4;
}

.member-details strong {
    color: #1e88e5;
    font-weight: 600;
}

/* 高校コミュニケーション講座セクション */
.school-program-content {
    max-width: 900px;
    margin: 0 auto;
}

.program-intro {
    text-align: center;
    margin-bottom: 50px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 50%, #f0f7ff 100%);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(30, 136, 229, 0.1);
    box-shadow: 0 15px 40px rgba(30, 136, 229, 0.1);
}

.program-intro h3 {
    color: #1e88e5;
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.4;
}

.program-subtitle {
    color: #555555;
    font-size: 1.1rem;
    line-height: 1.6;
    margin: 0;
}

.program-details {
    display: grid;
    gap: 30px;
}

.program-section {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 100%);
    border-radius: 15px;
    padding: 30px;
    border: 1px solid rgba(30, 136, 229, 0.1);
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.1);
    transition: all 0.3s ease;
}

.program-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(30, 136, 229, 0.15);
    border-color: rgba(30, 136, 229, 0.2);
}

.program-section h4 {
    color: #1e88e5;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    border-bottom: 2px solid rgba(30, 136, 229, 0.2);
    padding-bottom: 10px;
}

.program-section p {
    color: #555555;
    line-height: 1.7;
    margin-bottom: 15px;
}

.program-section p:last-child {
    margin-bottom: 0;
}

.quote {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-left: 4px solid #1e88e5;
    padding: 20px;
    margin: 20px 0;
    border-radius: 10px;
    font-style: italic;
    color: #1565c0;
    font-weight: 500;
    box-shadow: 0 5px 15px rgba(30, 136, 229, 0.1);
}

.program-conclusion {
    font-weight: 500;
    color: #1e88e5;
    font-style: italic;
    text-align: center;
    background: rgba(30, 136, 229, 0.05);
    padding: 15px;
    border-radius: 10px;
    margin-top: 10px;
}

/* YouTube動画セクション */
.videos-content {
    max-width: 1000px;
    margin: 0 auto;
}

/* 特集プレイリスト埋め込み */
.featured-playlist {
    margin-bottom: 50px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 100%);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 40px rgba(30, 136, 229, 0.1);
    border: 1px solid rgba(30, 136, 229, 0.1);
}

.featured-playlist-header {
    text-align: center;
    margin-bottom: 25px;
}

.featured-playlist-header h3 {
    color: #1e88e5;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.featured-playlist-header p {
    color: #666666;
    font-size: 1.1rem;
    margin: 0;
    line-height: 1.5;
}

.featured-playlist-embed {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    background: #000000;
}

.featured-playlist-embed iframe {
    border-radius: 15px;
    display: block;
}

.playlist-info {
    text-align: center;
    margin-bottom: 40px;
}

.playlist-info h3 {
    color: #1e88e5;
    font-size: 1.8rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.playlist-info p {
    color: #555555;
    font-size: 1.1rem;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.playlists-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.playlist-item {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 100%);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 40px rgba(30, 136, 229, 0.1);
    border: 1px solid rgba(30, 136, 229, 0.1);
    transition: all 0.3s ease;
}

.playlist-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 60px rgba(30, 136, 229, 0.2);
    border-color: rgba(30, 136, 229, 0.3);
}

.playlist-header {
    text-align: center;
    margin-bottom: 20px;
}

.playlist-header h4 {
    color: #1e88e5;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.playlist-header p {
    color: #666666;
    font-size: 0.95rem;
    margin: 0;
}

.playlist-embed {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.playlist-embed iframe {
    border-radius: 15px;
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.video-item {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 100%);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.1);
    border: 1px solid rgba(30, 136, 229, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.video-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(30, 136, 229, 0.2);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-item:hover .video-thumbnail img {
    transform: scale(1.05);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(30, 136, 229, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    transition: all 0.3s ease;
}

.video-item:hover .play-button {
    background: #1e88e5;
    transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
    padding: 20px;
}

.video-title {
    color: #333333;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-description {
    color: #666666;
    font-size: 0.9rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    font-size: 0.8rem;
    color: #888888;
}

.loading-message {
    text-align: center;
    padding: 40px;
    color: #888888;
    font-size: 1.1rem;
}

.youtube-link {
    text-align: center;
    margin-top: 30px;
}

.youtube-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background: linear-gradient(135deg, #ff0000, #cc0000);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(255, 0, 0, 0.3);
}

.youtube-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 0, 0, 0.4);
    background: linear-gradient(135deg, #cc0000, #990000);
}

.youtube-btn span {
    font-size: 1.2rem;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .playlists-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .playlist-item {
        padding: 20px;
    }
    
    .playlist-embed iframe {
        height: 250px;
    }
    
    .videos-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .video-thumbnail {
        height: 180px;
    }
    
    .program-intro {
        padding: 30px 20px;
    }
    
    .program-intro h3 {
        font-size: 1.3rem;
    }
    
    .program-section {
        padding: 20px;
    }
    
    .program-section h4 {
        font-size: 1.2rem;
    }
    
    .featured-playlist {
        padding: 20px;
    }
    
    .featured-playlist-header h3 {
        font-size: 1.5rem;
    }
    
    .featured-playlist-header p {
        font-size: 1rem;
    }
    
    .featured-playlist-embed iframe {
        height: 250px;
    }
    
    .achievements-details {
        padding: 30px 20px;
    }
    
    .achievements-details h3 {
        font-size: 1.5rem;
    }
    
    .category-title {
        font-size: 1.1rem;
        padding: 8px 12px;
    }
    
    .achievements-list li {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
}

/* プロフィール */
.profile-section {
    background: #f8f9fa;
    border-radius: 30px;
    padding: 60px;
    margin-bottom: 80px;
}

.members {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.member-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 50%, #f0f7ff 100%);
    border-radius: 30px;
    padding: 50px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 15px 40px rgba(30, 136, 229, 0.15);
    backdrop-filter: blur(20px);
}

.member-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 30px 80px rgba(30, 136, 229, 0.3);
    border-color: rgba(30, 136, 229, 0.5);
    background: linear-gradient(135deg, #ffffff 0%, #f0f7ff 50%, #e3f2fd 100%);
}

.member-photo {
    width: 220px;
    height: 280px;
    border-radius: 20px;
    object-fit: cover;
    object-position: center;
    margin: 0 auto 20px;
    border: 3px solid #e3f2fd;
    transition: all 0.3s ease;
}

.member-card:hover .member-photo {
    transform: scale(1.02);
    border-color: #1e88e5;
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.2);
}

.member-name {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: #333333;
}

.member-role {
    color: #1e88e5;
    font-size: 1.1rem;
    font-weight: 500;
}

/* フッター */
footer {
    background: linear-gradient(135deg, #1565c0, #1e88e5);
    padding: 40px 20px;
    text-align: center;
    color: #ffffff;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.footer-links a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
    opacity: 0.9;
}

.footer-links a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .social-feeds {
        grid-template-columns: 1fr;
    }

    .profile-section {
        padding: 40px 20px;
    }

    .member-photo {
        width: 180px;
        height: 230px;
    }

    .merch-title {
        font-size: 2rem;
    }
}

/* アニメーション */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeIn 0.8s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* スクロールアニメーション用 */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* エラーメッセージ */
.error-message {
    background: rgba(239, 83, 80, 0.1);
    border: 1px solid rgba(239, 83, 80, 0.3);
    color: #ef5350;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
}

/* 成功メッセージ */
.success-message {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.3);
    color: #4caf50;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
}

/* お問い合わせセクション */
.contact-section {
    background: #f8f9fa;
    padding: 80px 0;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: #ffffff;
    padding: 40px;
    border-radius: 20px;
    border: 1px solid #e0e0e0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333333;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    color: #333333;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1e88e5;
    background: #ffffff;
    box-shadow: 0 0 20px rgba(30, 136, 229, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    max-height: 400px;
    overflow-y: auto;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #1e88e5, #42a5f5);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.4);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.required {
    color: #ef5350;
    font-weight: bold;
}

.char-count {
    font-size: 0.8rem;
    color: #888;
    display: block;
    text-align: right;
    margin-top: 5px;
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    font-weight: 500;
}

.form-message.success {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.3);
    color: #4caf50;
}

.form-message.error {
    background: rgba(239, 83, 80, 0.1);
    border: 1px solid rgba(239, 83, 80, 0.3);
    color: #ef5350;
}

.btn-loading {
    opacity: 0.8;
}

/* 外部リンクセクション */
.external-links-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 80px 0;
}

.external-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.external-link-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafe 100%);
    border-radius: 20px;
    padding: 30px;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.1);
    border: 1px solid rgba(30, 136, 229, 0.1);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.external-link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(30, 136, 229, 0.1), transparent);
    transition: left 0.6s ease;
}

.external-link-card:hover::before {
    left: 100%;
}

.external-link-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 50px rgba(30, 136, 229, 0.2);
    border-color: rgba(30, 136, 229, 0.3);
}

.link-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.external-link-card h3 {
    color: #1e88e5;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.3;
}

.external-link-card p {
    color: #666666;
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.8;
}

/* 固定お問い合わせボタン */
.fixed-contact-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #1e88e5, #42a5f5);
    color: white;
    padding: 15px 25px;
    border-radius: 50px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    z-index: 999;
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.fixed-contact-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(30, 136, 229, 0.5);
}

.contact-icon {
    font-size: 1.3rem;
}

.contact-text {
    font-weight: bold;
    font-size: 1rem;
}

@keyframes pulse {
    0% {
        box-shadow: 0 5px 20px rgba(30, 136, 229, 0.3);
    }
    50% {
        box-shadow: 0 5px 30px rgba(30, 136, 229, 0.6);
    }
    100% {
        box-shadow: 0 5px 20px rgba(30, 136, 229, 0.3);
    }
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .fixed-contact-btn {
        bottom: 20px;
        right: 20px;
        padding: 12px 20px;
    }
    
    .contact-text {
        display: none;
    }
    
    .contact-icon {
        font-size: 1.5rem;
    }
    
    .external-links-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 10px;
    }
    
    .external-link-card {
        padding: 25px 20px;
    }
    
    .external-link-card h3 {
        font-size: 1.1rem;
    }
    
    .link-icon {
        font-size: 2.5rem;
        margin-bottom: 12px;
    }
    
    /* ニュース関連のレスポンシブ対応 */
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-tabs {
        gap: 5px;
    }
    
    .news-tab {
        padding: 8px 15px;
        font-size: 14px;
    }
}