@keyframes pan-overlay {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 0 -100%;
  }
}

@keyframes pan-image {
  0% {
    opacity: 0;
    background-position: 36% 42%;
    background-size: 250%;
  }

  5% {
    opacity: var(--opacity);
    background-position: 36% 42%;
    background-size: 250%;
  }

  18% {
    opacity: var(--opacity);
  }

  20% {
    opacity: 0;
    background-position: 30% 35%;
    background-size: 250%;
  }

  20.0001% {
    /* -- View 2 -- */
    background-position: 60% 85%;
    background-size: 500%;
  }

  30% {
    opacity: var(--opacity);
  }

  38% {
    opacity: var(--opacity);
  }

  40% {
    opacity: 0;
    background-position: 49% 81%;
    background-size: 500%;
  }

  40.0001% {
    /* -- View 3 -- */
    background-position: 80% 42%;
    background-size: 300%;
  }

  50% {
    opacity: var(--opacity);
  }

  58% {
    opacity: var(--opacity);
  }

  60% {
    opacity: 0;
    background-position: 84% 33%;
    background-size: 300%;
  }

  60.0001% {
    /* -- View 4 -- */
    background-position: 0% 0%;
    background-size: 300%;
  }

  70% {
    opacity: var(--opacity);
  }

  78% {
    opacity: var(--opacity);
  }

  80% {
    opacity: 0;
    background-position: 15% 4%;
    background-size: 300%;
  }

  80.0001% {
    /* -- View 5 -- */
    background-position: 80% 10%;
    background-size: 300%;
  }

  90% {
    opacity: var(--opacity);
  }

  98% {
    opacity: var(--opacity);
  }

  100% {
    opacity: 0;
    background-position: 72% 14%;
    background-size: 300%;
  }
}

.stage {
  --background-rgb: 15 15 15;

  --blue-rgb: 33 150 243;
  --primary-rgb: var(--blue-rgb);

  width: 100%;
  background-color: rgb(var(--background-rgb));
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;

  padding: 60px 0;

  font-size: 16px; /* forcing a reset to make to be sure this block is standard */
}

.screen {
  width: 400px;
  aspect-ratio: 10/16;
  border: 1px solid rgb(var(--blue-rgb));
  border-radius: 1em;
  background-color: rgb(var(--blue-rgb) / 15%);
  overflow: hidden;
  position: relative;
}

.screen:after,
.screen:before {
  content: '';
  height: 5px;
  position: absolute;
  z-index: 4;
  left: 50%;
  translate: -50% 0%;
  background-color: white;
}

.screen:before {
  width: 15%;
  top: 0;
  border-bottom-left-radius: 1rem;
  border-bottom-right-radius: 1rem;
}

.screen:after {
  width: 25%;
  bottom: 0;
  border-top-left-radius: 1rem;
  border-top-right-radius: 1rem;
}

.screen--overlay {
  background: linear-gradient(
    rgb(var(--primary-rgb) / 0.15),
    rgb(var(--primary-rgb) / 0.15) 3px,
    transparent 3px,
    transparent 9px
  );
  background-size: 100% 9px;

  position: absolute;
  inset: 0;
  z-index: 2;
  animation: pan-overlay 22s infinite linear;
}

.screen > figure {
  --opacity: 0.6;
  position: absolute;
  inset: 0;

  background-image: url(/experiments/animated-screen/snow-mountain.jpg);
  background-repeat: no-repeat;
  background-size: 300%;

  filter: sepia(100%) hue-rotate(160deg);
  opacity: var(--opacity);
  animation: pan-image 15s infinite linear;

  margin: 0;
  padding: 0;
}

.screen--content {
  position: absolute;
  inset: 20px;
  z-index: 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 1rem;

  border: 1px solid rgb(var(--blue-rgb) / 50%);
  border-radius: 1rem;
}