@keyframes glow {
  0% {
    box-shadow: inset 0 0 1vh cyan;
  }
  50% {
    box-shadow: inset 0 0 2vh cyan;
  }
  100% {
    box-shadow: inset 0 0 1vh cyan;
  }
}

@keyframes glow-front {
  0% {
    box-shadow: 0 0 30vh cyan;
  }
  25% {
    box-shadow: 0 0 40vh cyan;
  }
  50% {
    box-shadow: 0 0 35vh cyan;
  }
  75% {
    box-shadow: 0 0 45vh cyan;
  }
  100% {
    box-shadow: 0 0 30vh cyan;
  }
}

@keyframes glow-rainbow {
  0% {
    background-color: #9400D3;
    box-shadow: 0 0 1vh #9400D3;
  }
  14% {
    background-color: #4B0082;
    box-shadow: 0 0 1vh #4B0082;
  }
  28% {
    background-color: #0000FF;
    box-shadow: 0 0 1vh #0000FF;
  }
  42% {
    background-color: #00FF00;
    box-shadow: 0 0 1vh #00FF00;
  }
  56% {
    background-color: #FFFF00;
    box-shadow: 0 0 1vh #FFFF00;
  }
  70% {
    background-color: #FF7F00;
    box-shadow: 0 0 1vh #FF7F00;
  }
  100% {
    background-color: #FF0000;
    box-shadow: 0 0 1vh #FF0000;
  }
}

@keyframes glow-button {
  0% {
    background-color: cyan;
    box-shadow: 0 0 1vh cyan, 0 0 2vh cyan;
  }
  50% {
    box-shadow: none;
    background-color: transparent;
  }
  100% {
    box-shadow: 0 0 1vh cyan, 0 0 2vh cyan;
    background-color: cyan;
  }
}

@keyframes glow-door {
  0% {
    filter: brightness(100%);
  }
  50% {
    filter: brightness(150%);
  }
  100% {
    filter: brightness(100%);
  }
}