/* Inspired by: m3.material.io/components/progress-indicators/overview */

.loader {
  width: 32px;
  /* Subpixels get cut off */
  overflow: visible;
  transform: rotate(-90deg);
  transform-origin: center;

  --active: #a6abad;
  --track: #ededed;

  --duration: 8s;

  animation: spin 2s linear infinite;
}

@keyframes spin {
  0% {
    rotate: 0deg;
  }

  100% {
    rotate: 360deg;
  }
}

.active {
  stroke: var(--active);
  stroke-linecap: round;
  stroke-dashoffset: 360;
  animation: active-animation var(--duration) ease-in-out infinite;
}

@keyframes active-animation {
  0% {
    stroke-dasharray: 0 0 0 360 0 360;
  }
  12.5% {
    stroke-dasharray: 0 0 270 90 270 90;
  }
  25% {
    stroke-dasharray: 0 270 0 360 0 360;
  }
  37.5% {
    stroke-dasharray: 0 270 270 90 270 90;
  }
  50% {
    stroke-dasharray: 0 540 0 360 0 360;
  }
  50.001% {
    stroke-dasharray: 0 180 0 360 0 360;
  }
  62.5% {
    stroke-dasharray: 0 180 270 90 270 90;
  }
  75% {
    stroke-dasharray: 0 450 0 360 0 360;
  }
  87.5% {
    stroke-dasharray: 0 450 270 90 270 90;
  }
  87.501% {
    stroke-dasharray: 0 90 270 90 270 90;
  }
  100% {
    stroke-dasharray: 0 360 1 360 0 360;
  }
}

.track {
  stroke: var(--track);
  stroke-linecap: round;
  stroke-dashoffset: 360;
  animation: track-animation var(--duration) ease-in-out infinite;
}

@keyframes track-animation {
  0% {
    stroke-dasharray: 0 20 320 40 320 40;
  }
  12.5% {
    stroke-dasharray: 0 290 50 310 50 310;
  }
  25% {
    stroke-dasharray: 0 290 320 40 320 40;
  }
  37.5% {
    stroke-dasharray: 0 560 50 310 50 310;
  }
  37.501% {
    stroke-dasharray: 0 200 50 310 50 310;
  }
  50% {
    stroke-dasharray: 0 200 320 40 320 40;
  }
  62.5% {
    stroke-dasharray: 0 470 50 310 50 310;
  }
  62.501% {
    stroke-dasharray: 0 110 50 310 50 310;
  }
  75% {
    stroke-dasharray: 0 110 320 40 320 40;
  }
  87.5% {
    stroke-dasharray: 0 380 50 310 50 310;
  }
  100% {
    stroke-dasharray: 0 380 320 40 320 40;
  }
}