@mixin transition($transition...) {
  -moz-transition:    $transition;
  -o-transition:      $transition;
  -webkit-transition: $transition;
  transition:         $transition;
}
@mixin animation($animation...) {
  -moz-animation:    $animation;
  -o-animation:      $animation;
  -webkit-animation: $animation;
  animation:         $animation;
}

@keyframes loader-progress-bar-working {
  0% {width:10%;left: 0%}
  25% {width:20%}
  50% {width:10%;left: 90%}
  75% {width:20%}
  100% {width:10%;left: 0%}
}

.loader-container {
  top: 0px;
  left: 0px;
  width: 100%;
  height: 100%;
  z-index: 99999999;
  position: absolute;
  background: #fafafa;
  pointer-events: none;
  @include transition(opacity .2s);
  position: fixed;
  opacity: 0;

  &, * {
    box-sizing: border-box;
  }

  &.loader-progress-container {
    &.loader-progress-visible {
      pointer-events: auto;
      opacity: 1;
    }
  }
  &.loader-error-container {
    &.loader-error-visible {
      pointer-events: auto;
      opacity: 1;
    }
    .loader-error-message-container {
      display: block;
      position: absolute;
      transform: translateX(-50%);
      background: #cc4444;
      border-radius: 1em;
      max-width: 80%;
      padding: 0.5em;
      margin: 0;
      left: 50%;
      top: 20%;

      .loader-error-message {
        font-family: 'Courier New', Courier, Console, System, monospace;
        background: rgba(0, 0, 0, 0.2);
        margin-bottom: 1em;
        border-radius: 1em;
        overflow: auto;
        padding: 1em;
      }

      .loader-error-reload {
        text-decoration: underline;
        color: white;
      }
    }
    background: #550000;
    color: white;
  }
  .loader-progress-heading,
  .loader-progress-message-container,
  .loader-progress-bar-container {
    left: 50%;
    transform: translateX(-50%);
    position: absolute;
  }
  .loader-progress-message-container {
    @include transition(opacity .2s);
    pointer-events: none;
    text-align: center;
    padding: 0 12px;
    font-size: 1em;
    bottom: 25%;
    width: 100%;
    opacity: 0;
  }
  .loader-progress-heading {
    top: 15%;
    font-size: 4em;
    min-width: 152px;
    line-height: 1.2;
    font-weight: 600;
    text-align: center;
    text-shadow: #999 0px 0px 5px;
    color: #555;

    h1 {
      font-weight: 700;
    }
    small {
      font-weight: 400;
    }

    &, * {
      font-family: Helvetica, Arial, sans-serif;
    }

    img {
      width: 152px;
      height: 152px;
    }
  }

  .loader-progress-bar-container {
    width: 80%;
    border: solid 0.8pt #999;
    height: 10px;
    bottom: 5%;
  }

  .loader-progress-bar {
    width: 0px;
    height: 100%;
    background: #999;
    @include transition(width .2s);
    &.loader-progress-bar-immediate {
      @include transition(none);
    }
  }

  &.loader-progress-message-visible {
    .loader-progress-message-container {
      pointer-events: auto;
      opacity: 1;
    }
    .loader-progress-bar {
      position: relative;
      width: 20% !important;
      @include animation(loader-progress-bar-working 2s ease infinite);
      @include transition(none);
    }
  }
}