/**
 * ==============================================
 * Dot Collision
 * ==============================================
 */

.dot-collision {
  position: relative;

  @include dot;

  &::before,
  &::after {
    content: '';
    display: inline-block;
    position: absolute;
    top: 0;
  }

  &::before {
    left: -$dot-width;

    @include dot($bg-color: $dot-before-color);

    animation: dot-collision-before 2s infinite ease-in;
  }

  &::after {
    left: $dot-width;

    @include dot($bg-color: $dot-after-color);

    animation: dot-collision-after 2s infinite ease-in;
    animation-delay: 1s;
  }
}

@keyframes dot-collision-before {
  0%,
  50%,
  75%,
  100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-$dot-spacing);
  }
}

@keyframes dot-collision-after {
  0%,
  50%,
  75%,
  100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX($dot-spacing);
  }
}