.like-icon {
  --contour-color: #000;
  --sparks-color: #ff0000;
  transform-origin: center;
}

.like-icon .contour {
  fill: var(--contour-color);
  transition: fill 0.1s linear;
}

.like-icon .core {
  fill: transparent;
  transition: fill 0.3s 0.03s linear;
}

.like-icon .main-body {
  fill: transparent;
  transition: fill 0.3s linear;
}

.like-icon .sparks {
  opacity: 0;
  fill: var(--sparks-color);
}

.like-icon .heart {
  transform-origin: center;
}

.like-icon:hover .core {
  fill: var(--contour-color);
  transition-delay: 0s;
}

.like-icon:hover .main-body {
  fill: var(--contour-color);
  transition-delay: 0.05s;
}

.like-icon:active .core {
  fill: var(--animation-fill-color);
  transition-delay: 0s;
}

.like-icon:active .main-body {
  fill: var(--animation-fill-color);
  transition-delay: 0.05s;
}

.like-icon.is-liked .core {
  fill: var(--animation-fill-color);
  transition-delay: 0s;
}

.like-icon.is-liked .main-body {
  fill: var(--animation-fill-color);
  transition-delay: 0.05s;
}

.like-icon.is-liked .contour {
  fill: var(--animation-fill-color);
  transition: fill 0.3s 0.06s linear;
}

.like-icon.is-liked .heart {
  animation: heart-scale 0.3s 0.1s ease-in;
}

.like-icon.is-liked .sparks {
  animation: sparks-opacity 0.3s 0.3s ease-in;
}

@keyframes heart-scale {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.5);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes sparks-opacity {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}