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

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
    position: fixed;
}

#youtube-player {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 177.78vh;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

#youtube-player iframe {
    width: 100%;
    height: 100%;
}

.music-control {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
    z-index: 1000;
}

.music-control:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 1);
}

.icon {
    width: 24px;
    height: 24px;
    fill: #333;
}

.hidden {
    display: none;
}

@media (max-width: 768px) {
    .music-control {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
    }

    .icon {
        width: 20px;
        height: 20px;
    }
}