.music-header {
    background: linear-gradient(90deg, #4a90e2, #5cb85c);
    color: white;
    padding: 3rem 1rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-top: 3rem;
}

.music-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1), transparent 30%);
    transform: rotate(0deg);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.music-header h1 {
    margin: 0;
    font-size: 3rem;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
    position: relative;
    z-index: 1;
}

.music-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 2rem auto;
    background: linear-gradient(135deg, #F8F8FF 0%, #F0F8FF 50%, #F8F8FF 100%);
    border: 3px solid #8B4513;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 
        0 8px 25px rgba(0,0,0,0.15),
        inset 0 2px 8px rgba(255,255,255,0.3);
}

.video-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, #FFD700, #FFA500, #FFD700);
    border-radius: 12px 12px 0 0;
}

.video-wrapper {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9のアスペクト比 */
    margin-top: 1rem;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.video-title {
    color: #4a90e2;
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

.video-description {
    color: #666;
    font-size: 1rem;
    text-align: center;
    margin-top: 1rem;
    font-style: italic;
}

@media (max-width: 768px) {
    .music-header h1 {
        font-size: 2.5rem;
    }
    
    .video-container {
        margin: 1rem;
        padding: 1rem;
    }
}