.btn {
  position: relative;
  display: inline-block;
  margin: 0;
  padding: 1.5rem 4.5rem;
  background: var(--color-primary-500);
  color: var(--color-secondary-900);
  font-family: inherit;
  font-size: 1.4rem;
  font-weight: 300;
  line-height: normal;
  border: 0;
  border-radius: 0.4rem;
  box-shadow: -1px 1px 8px rgba(0, 0, 0, 0.4);
  appearance: none;
  cursor: pointer;
  transition: background 250ms, box-shadow 250ms;
  
  &:hover {
    background: var(--color-primary-600);
    box-shadow: -2px 2px 16px rgba(0, 0, 0, 0.6);
  }
  
  &:active,
  &:focus {
    outline: none;
  }
  
  &:active {
    box-shadow: -4px 4px 24px rgba(0, 0, 0, 0.8);
  }
}

.btn .text {
  position: relative;
  z-index: 2;
}

.btn .dot {
  position: absolute;
  z-index: -1;
  display: block;
  width: 200px;
  height: 10px;
  transform-origin: 5px 5px;
  pointer-events: none;
  
  &:nth-child(1) {
    top: 50%;
    left: 100%;
    transform: translate3d(-10px, -5px, 0);
  }
  
  &:nth-child(2) {
    bottom: 0;
    left: 100%;
    transform: translate3d(-10px, 0, 0) rotate(45deg);
  }
  
  &:nth-child(3) {
    bottom: 0;
    left: 50%;
    transform: translate3d(-5px, 0, 0) rotate(90deg);
  }
  
  &:nth-child(4) {
    bottom: 0;
    left: 0;
    transform: rotate(135deg);
  }
  
  &:nth-child(5) {
    top: 50%;
    left: 0;
    transform: translate3d(0, -5px, 0) rotate(180deg);
  }
  
  &:nth-child(6) {
    top: 0;
    left: 0;
    transform: rotate(225deg);
  }
  
  &:nth-child(7) {
    top: 0;
    left: 50%;
    transform: translate3d(-5px, 0, 0) rotate(270deg);
  }
  
  &:nth-child(8) {
    top: 0;
    left: 100%;
    transform: translate3d(-10px, 0, 0) rotate(315deg);
  }
  
  &::before {
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 6px;
    height: 6px;
    background-color: var(--color-primary-500);
    border-radius: 50%;
    offset-path: path("M0 1c7.1 0 10.7 2 14.3 4s7.1 4 14.3 4 10.7-2 14.3-4 7.2-4 14.3-4 10.7 2 14.3 4 7.1 4 14.3 4 10.7-2 14.3-4 7.1-4 14.3-4 10.7 2 14.3 4 7.1 4 14.3 4 10.7-2 14.3-4 7.1-4 14.3-4 10.7 2 14.3 4 7.1 4 14.3 4");
    offset-distance: 0;
    pointer-events: none;
    content: "";
  }
}

.btn.is-animating .dot::before {
  animation: dot 750ms cubic-bezier(0.215, 0.61, 0.355, 1);
}

@keyframes dot {
  0% {
    offset-distance: 0%;
    opacity: 1;
  }
  100% {
    offset-distance: 100%;
    opacity: 0;
  }
}