.placeholder {
  background-color: currentcolor;
  opacity: $placeholder-opacity-max;
}

// Animation
.placeholder-glow {
  .placeholder {
    animation: placeholder-glow 2s ease-in-out infinite;
  }
}

@keyframes placeholder-glow {
  50% {
    opacity: $placeholder-opacity-min;
  }
}

.placeholder-wave {
  mask-image: linear-gradient(130deg, $black 55%, rgba(0, 0, 0, (1 - $placeholder-opacity-min)) 75%, $black 95%);
  animation: placeholder-wave 2s linear infinite;
}

@keyframes placeholder-wave {
  100% {
    mask-position: -200% 0%;
  }
}