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

body{
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #5f7a61;
    font-family: 'roboto', sans-serif;
}

.promo {
	padding-bottom: 2em;
}

.aref {
	text-decoration:none;
	color: white;
	font-size: 20px;
}

/* CSS */
.button-85 {
  padding: 0.6em 2em;
  border: none;
  outline: none;
  color: rgb(255, 255, 255);
  background: #111;
  cursor: pointer;
  position: relative;
  z-index: 0;
  border-radius: 10px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.button-85:before {
  content: "";
  background: linear-gradient(
    45deg,
    #ff0000,
    #ff7300,
    #fffb00,
    #48ff00,
    #00ffd5,
    #002bff,
    #7a00ff,
    #ff00c8,
    #ff0000
  );
  position: absolute;
  top: -2px;
  left: -2px;
  background-size: 400%;
  z-index: -1;
  filter: blur(5px);
  -webkit-filter: blur(5px);
  width: calc(100% + 4px);
  height: calc(100% + 4px);
  animation: glowing-button-85 20s linear infinite;
  transition: opacity 0.3s ease-in-out;
  border-radius: 10px;
}

@keyframes glowing-button-85 {
  0% {
    background-position: 0 0;
  }
  50% {
    background-position: 400% 0;
  }
  100% {
    background-position: 0 0;
  }
}

.button-85:after {
  z-index: -1;
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: #222;
  left: 0;
  top: 0;
  border-radius: 10px;
}

.music-player{
    width: 350px;
    height: 550px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 40px 100px rgba(255, 255, 255, 0.1);
    padding: 30px;
    overflow: hidden;
    color: #d5eebb;
}

.music-name,
.artist-name{
    text-align: center;
    text-transform: capitalize;
}

.music-name{
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 10px;
}

.artist-name{
    font-size: 20px;
}

.disk{
    position: relative;
    display: block;
    margin: 40px auto;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background-image: url('covers/cover_1.jpg');
    background-size: cover;
    box-shadow: 0 0 0 10px rgba(255, 255, 255, 0.08);
    animation:  rotate 20s linear infinite;
}

.disk::before{
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #5f7a61;
}

.song-slider{
    width: 100%;
    position: relative;
}

.seek-bar{
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    border-radius: 10px;
    background: #7fc8a9;
    overflow: hidden;
    cursor: pointer;
}

.seek-bar::-webkit-slider-thumb{
    -webkit-appearance: none;
    width: 1px;
    height: 20px;
    box-shadow: -400px 0 0 400px #d5eebb;
}

.current-time,
.song-duration{
    font-size: 14px;
}

.song-duration{
    position: absolute;
    right: 0;
}

.controls{
    width: 60%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: auto;
    margin-top: 20px;
}

.play-btn{
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #d5eebb;
    cursor: pointer;
    border: none;
}

.play-btn span{
    position: absolute;
    top: 50%;
    left: 25%;
    transform: translateY(-50%);
    width: 10px;
    height: 30px;
    border-radius: 2px;
    background: #5f7a61;
    transition: .5s;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
}

.play-btn span:nth-child(2){
    left: 55%;
    transform-origin: center;
}

.play-btn.pause span:nth-child(2){
    transform: translateY(-50%) scaleY(0);
}

.play-btn.pause span:nth-child(1){
    width: 35%;
    left: 53%;
    transform: translate(-50%, -50%);
    border-radius: 0;
    clip-path: polygon(0 0, 100% 50%, 100% 50%, 0% 100%);
}

.play-btn.pause{
    animation: pulse 2s linear infinite;
}

@keyframes pulse{
    0%{
        box-shadow: 0;
    }
    50%{
        box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.1);
    }
    100%{
        box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.4);
    }
}

.btn{
    width: 40px;
    height: 40px;
    background: #d5eebb;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    border: none;
    cursor: pointer;
}

@keyframes rotate{
    0%{
        transform: rotate(0);
    }
    100%{
        transform: rotate(360deg);
    }
}

.disk{
    // previous styles
    animation: rotate 20s linear infinite;
    animation-play-state: paused;
}

.disk.play{
    animation-play-state: running;
}