$spinner-offset: 187 !default;
$spinner-duration: 1.4s !default;
$spinner-index: 4110 !default;
$spinner-color: #1aac19 !default;

.spinner {
  width: 48px;
  height: 48px;
  animation: rotator $spinner-duration linear infinite;

  .path {
    stroke-dasharray: $spinner-offset;
    stroke-dashoffset: 0;
    stroke: $spinner-color;
    transform-origin: center;
    animation: dash $spinner-duration ease-in-out infinite;
  }

  &.fixed {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: $spinner-index;
    margin: auto;
  }
}

.spinner-fixed {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: -1;
  opacity: 0;
  transition: opacity .35s;
  pointer-events: none;

  &.active {
    z-index: $spinner-index;
    opacity: 1;
  }

  .spinner {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
  }

  .spinner-backdrop {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    display: block;
    background-color: rgba(255,255,255,.75);
  }
}

@keyframes rotator {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(270deg);
  }
}

@keyframes dash {
  0% {
    stroke-dashoffset: $spinner-offset;
  }

  50% {
    stroke-dashoffset: $spinner-offset/4;
    transform: rotate(135deg);
  }

  100% {
    stroke-dashoffset: $spinner-offset;
    transform: rotate(450deg);
  }
}