body {
    font-family: Arial, sans-serif;
    background-color:white;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
header {
    background-color:white;
    color:black; 
    padding: 40px 20px;
    text-align:center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
header h1 {
    margin: 0 0 30px 0;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}
nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}
nav a {
    text-decoration: none;
    color:black;
    background-position-x:center;
    padding: 12px 28px;
    border-radius:30px;
    transition: all 0.3px ease;
    display: inline-block;
    box-shadow: 0 4px 8px rgba(52, 152, 219);
    font-size: 16px;
    border: 2px solid transparent;
}
nav a:hover {
    background-color:cornflowerblue;
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(52, 152, 219);
    border-color: white;
}
.music-player {
    max-width: 800px;
    margin: 40px auto;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.4);
    color:black;
    position: relative;
    overflow: hidden;
}
.music-player::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #e74c3c, #3498db, #2ecc71);
}
@keyframes rotate {
    from { transform: rotate(0deg);}
    to { transform: rotate(360deg);}
}
.record-container {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}
.record {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 50%, #757475, #111111);
    position: relative;
    box-shadow:
        0 0 0 15px rgba(52, 152, 219)
        0 0 0 30px rgba(41, 128, 185)
        inset 0 0 50px rgb(255, 254, 254);
    transition: transform 0.5s ease;
    animation: rotate 20s linear infinite;
    animation-play-state: paused;
}
.record.playing {
    animation-play-state: running;
}
.record-label {
    position: absolute;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: #ecf0f1;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display:flex;
    justify-content: center;
    align-items: center;
    font-size: 10em;
    color: black;
    z-index: 2;
}
.playlist {
    flex: 1;
    min-width: 300px;
    background: rgba(255, 255, 255);
    border-radius: 15px;
    padding: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}
.playlist-header {
    margin-bottom: 15px;
}
.playlist-header h3 {
    margin-top: 0;
    color: black;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.player-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 15px;
    flex-wrap: wrap;
}
.fold-btn {
    background: transparent;
    border: none;
    color: black;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.3s ease;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin-left: 10px;
}
.fold-btn:hover {
    background: rgb(255, 255, 255);
    transform: scale(1.1);
}
.playlist.expanded .fold-btn {
    transform: rotate(180deg);
}
.song-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}
.playlist.expanded .song-list {
    max-height: 400px;
    overflow-y: auto;
    margin-top: 15px;
}
.song-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    border-bottom: 1px solid rgba(255, 255, 255);
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.song-item:hover {
    background-color: rgba(255, 255, 255);
}
.song-item.active {
    background-color: rgba(255, 255, 255);
}
.playlist:not(.expanded) .song-list {
    max-height: 0;
    overflow: hidden;
    margin-top: 0;
}
.control-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: black;
    padding: 10px 15px;
    border-radius: 50%;
    cursor:pointer;
    font-size: 40px;
    transition: background-color 0.3s ease;
}
.control-btn:hover {
    background: rgba(255, 255, 255,0.2);
}
.progress-container {
    flex: 1;
    min-width:200px;
    max-width:400px;
}
.progress-bar {
    height: 6px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    margin-bottom: 5px;
}
.progress-bar:hover {
    height: 10px;
}
.progress-time {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: #666;
    margin-top: 5px;
}
.current-time, .total-time {
    font-weight: 500;
}
article {
    background-color:white;
    color:black; 
    padding: 40px 20px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
article h1 {
    margin: 0 0 30px 0;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}
article h2 {
    margin: 0 0 30px 0;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}