/**
 * ==============================================
 * Experimental: Gooey Effect
 * Dot Gathering
 * ==============================================
 */

$dot-color-hsl: hsl(0, 100%, 0%);

$d: 50px;

.dot-gathering {
  position: relative;

  @include dot(
    $width: 12px,
    $height: 12px,
    $radius: 6px,
    $bg-color: $dot-color-hsl,
    $color: transparent
  );

  margin: -1px 0;
  filter: blur(2px);

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

    @include dot(
      $width: 12px,
      $height: 12px,
      $radius: 6px,
      $bg-color: $dot-color-hsl,
      $color: transparent
    );

    opacity: 0;
    filter: blur(2px);
    animation: dot-gathering 2s infinite ease-in;
  }

  &::after {
    animation-delay: .5s;
  }
}

@keyframes dot-gathering {
  0% {
    opacity: 0;
    transform: translateX(0);
  }

  35%,
  60% {
    opacity: 1;
    transform: translateX($d);
  }

  100% {
    opacity: 0;
    transform: translateX($d * 2);
  }
}