*{
    box-sizing:border-box;
}

body{
    background:#1d1d1d;
    color:#fff;
    font-family:Arial,Helvetica,sans-serif;
    display:flex;
    justify-content:center;
    align-items:flex-start;
    padding:30px;
}

.player{

    width:520px;

    background:#303030;

    padding:20px;

    border-radius:12px;

    box-shadow:0 8px 20px rgba(0,0,0,.35);

}

h2{
    text-align:center;
    margin-top:0;
}

#currentSong{

    margin:18px 0;

    font-size:18px;

    font-weight:bold;

    text-align:center;

    color:#00e676;

}

.progress-container{

    height:10px;

    background:#555;

    border-radius:20px;

    cursor:pointer;

    overflow:hidden;

}

.progress-container div{

    width:0;

    height:100%;

    background:#00c853;

    transition:width .1s linear;

}

.time{

    display:flex;

    justify-content:space-between;

    margin:8px 0 20px;

    font-size:13px;

    color:#ccc;

}

.controls{

    display:flex;

    justify-content:center;

    gap:12px;

    margin-bottom:20px;

}

.controls button{

    width:52px;

    height:52px;

    font-size:22px;

    border:none;

    border-radius:50%;

    background:#444;

    color:white;

    cursor:pointer;

    transition:.2s;

}

.controls button:hover{

    background:#00c853;

    transform:scale(1.08);

}

/* Lista */

#playlist{

    list-style:none;

    padding:0;

    margin:0;

    max-height:320px;

    overflow-y:auto;

    overflow-x:hidden;

    border:1px solid #444;

    border-radius:8px;

}

/* Canciones */

#playlist li{

    padding:12px 15px;

    border-bottom:1px solid #444;

    cursor:pointer;

    transition:.2s;

    user-select:none;

}

#playlist li:last-child{

    border-bottom:none;

}

#playlist li:hover{

    background:#444;

}

/* Canción activa */

#playlist li.active{

    background:#00c853;

    color:white;

    font-weight:bold;

}

/* Barra de desplazamiento */

#playlist::-webkit-scrollbar{

    width:10px;

}

#playlist::-webkit-scrollbar-track{

    background:#2a2a2a;

    border-radius:20px;

}

#playlist::-webkit-scrollbar-thumb{

    background:#00c853;

    border-radius:20px;

}

#playlist::-webkit-scrollbar-thumb:hover{

    background:#00e676;

}