/* Import Google font - Poppins */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap');
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #E3F2FD;
}
.wrapper {
  padding: 35px 40px;
  border-radius: 20px;
  background: #141414;
}
.wrapper header {
  display: flex;
  color: #B2B2B2;
  align-items: center;
  justify-content: space-between;
}
header h2 {
  font-size: 1.6rem;
}
header .column {
  display: flex;
  align-items: center;
}
header span {
  font-weight: 500;
  margin-right: 15px;
  font-size: 1.19rem;
}
header input {
  outline: none;
  border-radius: 30px;
}
.volume-slider input {
  accent-color: #fff;
}
.keys-checkbox input {
  height: 30px;
  width: 60px;
  cursor: pointer;
  appearance: none;
  position: relative;
  background: #4B4B4B
}
.keys-checkbox input::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 5px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #8c8c8c;
  transform: translateY(-50%);
  transition: all 0.3s ease;
}
.keys-checkbox input:checked::before {
  left: 35px;
  background: #fff;
}
.piano-keys {
  display: flex;
  list-style: none;
  margin-top: 40px;
}
.piano-keys .key {
  cursor: pointer;
  user-select: none;
  position: relative;
  text-transform: uppercase;
}
.piano-keys .black {
  z-index: 2;
  width: 44px;
  height: 140px;
  margin: 0 -22px 0 -22px;
  border-radius: 0 0 5px 5px;
  background: linear-gradient(#333, #000);
}
.piano-keys .black.active {
  box-shadow: inset -5px -10px 10px rgba(255,255,255,0.1);
  background:linear-gradient(to bottom, #000, #434343);
}
.piano-keys .white {
  height: 230px;
  width: 70px;
  border-radius: 8px;
  border: 1px solid #000;
  background: linear-gradient(#fff 96%, #eee 4%);
}
.piano-keys .white.active {
  box-shadow: inset -5px 5px 20px rgba(0,0,0,0.2);
  background:linear-gradient(to bottom, #fff 0%, #eee 100%);
}
.piano-keys .key span {
  position: absolute;
  bottom: 20px;
  width: 100%;
  color: #A2A2A2;
  font-size: 1.13rem;
  text-align: center;
}
.piano-keys .key.hide span {
  display: none;
}
.piano-keys .black span {
  bottom: 13px;
  color: #888888;
}

@media screen and (max-width: 815px) {
  .wrapper {
    padding: 25px;
  }
  header {
    flex-direction: column;
  }
  header :where(h2, .column) {
    margin-bottom: 13px;
  }
  .volume-slider input {
    max-width: 100px;
  }
  .piano-keys {
    margin-top: 20px;
  }
  .piano-keys .key:where(:nth-child(9), :nth-child(10)) {
    display: none;
  }
  .piano-keys .black {
    height: 100px;
    width: 40px;
    margin: 0 -20px 0 -20px;
  }
  .piano-keys .white {
    height: 180px;
    width: 60px;
  }
}

@media screen and (max-width: 615px) {
  .piano-keys .key:nth-child(13),
  .piano-keys .key:nth-child(14),
  .piano-keys .key:nth-child(15),
  .piano-keys .key:nth-child(16),
  .piano-keys .key :nth-child(17) {
    display: none;
  }
  .piano-keys .white {
    width: 50px;
  }
}
.dot {
  height: 500px;
  width: 500px;
  background-color: #526d82d7;
  border-radius: 50%;
  display: inline-block;
  position: absolute;
  top: -250px;
  left:-250px;
  z-index: 5;
}
.dot2 {
    height: 200px;
    width: 200px;
    background-color: #9db2bfe7;
    border-radius: 50%;
    display: block;
    position: absolute;
    top: 150px;
    left:10px;
    z-index: 6;
    box-shadow: 0 0 2px 2px #6565653e;
  }
  .dot3 {
    height: 300px;
    width: 300px;
    background-color: #9db2bffb;
    border-radius: 50%;
    display: block;
    position: absolute;
    bottom: -150px;
    right:0px;
    z-index: 5;
    box-shadow: 0 0 2px 2px #4d4d4d6b;
  }
  .dot4 {
    height: 150px;
    width: 150px;
    background-color: #27374D;
    border-radius: 50%;
    display: block;
    position: absolute;
    bottom: 10px;
    right:200px;
    z-index: 6;
    box-shadow: 0 0 2px 2px #4d4d4d6b;
  }