.player {
    display: flex;
    align-items: center;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    padding: 10px;
    max-width: 350px;
    font-family: Arial, sans-serif;
    transition: background-color 0.5s ease, border-color 0.5s ease;
}

.cover-container {
    position: relative;
    width: 60px;
    height: 60px;
    margin-right: 15px;
    cursor: pointer;
}

.cover {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    border-radius: 30px;
    overflow: hidden;
}

.cover-container::after, .playBtn {
    opacity: 0; 
    transition: opacity 0.3s ease;
}

.cover-container:hover::after, .cover-container:hover .playBtn {
    opacity: 1; 
}

.cover-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.3); 
    z-index: 1;
    border-radius: 30px;
}

.playBtn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: none;
    border: none;
    font-size: 1.5em;
    color: #ffffff;
    cursor: pointer;
    z-index: 2;
}

.song-info {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.song-title {
    font-size: 0.9em;
    font-weight: 600;
    color: #333;
    margin-bottom: 6px;
    transition: color 0.5s ease;
}

.progress-container {
    width: 100%;
    height: 3px;
    background: #ddd;
    border-radius: 1.5px;
    cursor: pointer;
    position: relative;
}

.progress, .preview-progress {
    height: 100%;
    border-radius: 1.5px;
    position: absolute;
    left: 0;
    top: 0;
}

.progress {
    background: #007bff;
    width: 0%;
    transition: width 0.3s ease;
}

.preview-progress {
    background: rgba(0, 123, 255, 0.5); 
    width: 0%;
}

.time {
    font-size: 0.75em;
    color: #666;
    margin-top: 8px;
    transition: color 0.5s ease;
}

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

.rotating {
    animation: rotate 10s linear infinite;
    animation-play-state: paused;
}

.playing .rotating {
    animation-play-state: running;
}