.o-app {
  background-color: #FF1C69;
  background-image: conic-gradient(#FF1C69, #FF4B69);
  height: 100%;
  overflow: hidden;
  position: relative;
  width: 100%;
}
.o-app::before {
  background-color: #FFDC69;
  content: '';
  height: 50%;
  left: 50%;
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  width: 1px;
  z-index: 2;
}
  .o-app--activate {
    align-items: center;
    background-color: transparent;
    background-image: radial-gradient(rgba(0, 0, 0, 1), rgba(0, 0, 0, 0.75));
    color: #FFFFFF;
    display: flex;
    font-family: monospace;
    font-size: 2em;
    height: 100%;
    left: 0;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    position: absolute;
    top: 0;
    transform: scale(1.5, 1.5);
    transition: all 0.5s ease;
    transition-property: opacity, transform;
    width: 100%;
    z-index: 3;
  }
  .o-app--control {
    opacity: 0;
    position: absolute;
    transition: opacity 0.5s ease;
    z-index: 1;
  }
  .o-app--control:active {
    opacity: 1;
  }
  .o-app--backward {
    background-image: linear-gradient(180deg, rgba(255, 220, 105, 0) 0%, rgba(255, 220, 105, 0.66) 100%);
    bottom: 0;
    clip-path: polygon(33.33% 0%, 66.66% 0%, 100% 100%, 0% 100%);
    height: 33.33%;
    left: 0;
    width: 100%;
  }
  .o-app--credits {
    background-color: rgba(255, 28, 105, 0.5);
    bottom: 0;
    color: #FFFFFF;
    font-family: monospace;
    font-size: 0.75em;
    left: 50%;
    padding: 1em;
    position: absolute;
    transform: translate3d(-50%, 100%, 0);
    transition: all 0.5s ease;
    transition-property: opacity, transform;
    z-index: 3;
  }
  .o-app--credits a {
    color: inherit;
    text-decoration: underline;
  }
  .o-app--forward {
    background-image: linear-gradient(0deg, rgba(255, 220, 105, 0) 0%, rgba(255, 220, 105, 0.66) 100%);
    clip-path: polygon(0% 0%, 100% 0%, 66.66% 100%, 33.33% 100%);
    height: 33.33%;
    left: 0;
    top: 0;
    width: 100%;
  }
  .o-app--left {
    background-image: linear-gradient(270deg, rgba(255, 220, 105, 0) 0%, rgba(255, 220, 105, 0.66) 100%);
    clip-path: polygon(0% 0%, 100% 33.33%, 100% 66.66%, 0% 100%);
    height: 100%;
    left: 0;
    top: 0;
    width: 33.33%;
  }
  .o-app--right {
    background-image: linear-gradient(90deg, rgba(255, 220, 105, 0) 0%, rgba(255, 220, 105, 0.66) 100%);
    clip-path: polygon(0% 33.33%, 100% 0%, 100% 100%, 0% 66.66%);
    height: 100%;
    right: 0;
    top: 0;
    width: 33.33%;
  }

@media (hover: hover) {
  .o-app--control:hover {
    opacity: 1;
  }
}

.o-app-inactive .o-app--activate {
  opacity: 1;
  transform: scale(1, 1);
}

.o-app--credits:focus-within,
.o-app-inactive .o-app--credits {
  opacity: 1;
  transform: translate3d(-50%, 0%, 0);
  transition-property: opacity;
}

@media (prefers-reduced-motion: reduce) {
  .o-app--credits {
    transition-property: opacity;
  }
}