/* Rain effect by Aaron Rickle
   https://codepen.io/arickle/pen/XKjMZY
   simplified, revised with logical properties */

.rain {
  block-size: 100%;
  display: block;
  inset-block-start: 0;
  inset-inline-start: 0;
  inline-size: 100%;
  pointer-events: none;
  position: absolute;
  z-index: 2;
}

.rain.back-row {
  z-index: 1;
  inset-block-end: 60px;
  opacity: 0.5;
}

.drop {
  position: absolute;
  inset-block-end: 100%;
  inline-size: 15px;
  block-size: 120px;
  pointer-events: none;
  animation: drop 0.5s linear infinite;
}

@keyframes drop {
  0% {
    transform: translateY(0vh);
  }
  75% {
    transform: translateY(90vh);
  }
  100% {
    transform: translateY(90vh);
  }
}

.stem {
  inline-size: 1px;
  block-size: 60%;
  margin-inline-start: 7px;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0),
    rgba(255, 255, 255, 0.25)
  );
  animation: stem 0.5s linear infinite;
}

@keyframes stem {
  0% {
    opacity: 1;
  }
  65% {
    opacity: 1;
  }
  75% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}

.splat {
  inline-size: 15px;
  block-size: 10px;
  border-block-start: 2px dotted rgba(255, 255, 255, 0.5);
  border-radius: 50%;
  opacity: 1;
  transform: scale(0);
  animation: splat 0.5s linear infinite;
  display: block;
}

@keyframes splat {
  0% {
    opacity: 1;
    transform: scale(0);
  }
  80% {
    opacity: 1;
    transform: scale(0);
  }
  90% {
    opacity: 0.5;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(1.5);
  }
}