.BRpageview {
  position: relative;
  margin: auto;
}

.BRmode1up .BRpagecontainer, .BRmodeThumb .BRpagecontainer {
  box-shadow: 1px 1px 2px #333;
  img {
    border: 0;
  }
}

.BRmodeThumb .BRpagecontainer, .BRmode2up .BRpagecontainer {
  cursor: pointer;
}
.BRpagecontainer.BRemptypage {
  cursor: unset;
}

.br-mode-1up__root {
  display: block;
  overflow: auto;
  position: relative;
  width: 100%;
  height: 100%;

  // This is a performance optimization that basically tells the browser "the size
  // of this element doesn't depend on the size of its children".
  contain: strict;

  .br-mode-1up__world {
    position: absolute;
    transform-origin: 0 0;
  }
  
  .br-mode-1up__visible-world {
    position: absolute;
    transform-origin: 0 0;
  }
}

.BRpagecontainer {
  position: relative;
  overflow: hidden;
  background: $brColorPlaceholderBg;
  overflow: hidden;
  overflow: clip;
  img {
    position: absolute;
    background: transparent;
    display: block;
    width: 100%;
    height: 100%;
  }
  .BRscreen {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1;
  }
  &.BRpageloading img {
    // Don't show the alt text while loading
    color: transparent;
  }
  &.BRemptypage {
    background: transparent;
    img {
      background-image: none;
    }
  }
}

svg.BRPageLayer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

// Hides page layers during page flip animation
.BRpageFlipping .BRPageLayer {
  display: none;
}

.br-mode-2up__root {
  display: block;
  overflow: auto;
  width: 100%;
  height: 100%;
}

.br-mode-2up__book {
  position: relative;
  transform-origin: 0 0;
  width: 0px;
  height: 0px;
}

.BRmode2up {
  // Used while loading stuff
  transition: opacity 0.2s;
}

.BRmode2up .BRpagecontainer {
  backface-visibility: hidden;
  &:not(.BRpage-visible) {
    display: none;
  }
}

.br-mode-2up__leafs {
  position: absolute;
  cursor: pointer;
  top: 0;
  transform-style: preserve-3d;
  
  &[side=left] {
    border-radius: 4px 0 0 4px;
    .br-leaf-edges__label {
      padding-right: 10px;
      border-radius: 4px 0 0 4px;
    }
  }
  &[side=right] {
    border-radius: 0 4px 4px 0;
    .br-leaf-edges__label {
      padding-left: 20px;
      border-radius: 0 4px 4px 0;
    }
  }
  &.br-mode-2up__leafs--flipping {
    z-index: 200000;
    transition: transform 5s;
    transition-timing-function: ease-in-out;
    border-radius: 0;

    // Have a copy of the background at a perpendicular angle,
    // so that during the rotation, it's always visible.
    &:before {
      content: '';
      display: block;
      width: 100%;
      height: 100%;
      position: absolute;
      transform: rotateY(-90deg);
    }
  }

  &, &.br-mode-2up__leafs--flipping::before {
    background: transparent url(images/back_pages.png) repeat scroll 0% 0%;
  }

  .br-leaf-edges__bar {
    display: none;
    pointer-events: none;
    position: absolute;
    top: 0;
    bottom: 0;
    min-width: 1px;
    background-color: #9A9B9D;
    opacity: 0.85;
    transform: translateX(-50%);
  }
  
  .br-leaf-edges__label {
    display: none;
    pointer-events: none;
    z-index: 1000;
    position: absolute;
    padding: 6px;
    color: white;
    background-color: #9A9B9D;
    opacity: 0.85;
    white-space: nowrap;
    transform: translateY(-10px);
  }
}

.br-mode-2up--flipping-left {
  .BRpage-entering[data-side=R] {
    z-index: 10;
    transform-origin: left;
    transform: rotateY(0deg);
  }

  .BRpage-exiting[data-side=L] {
    z-index: 10;
    transform-origin: right;
  }

  .BRpage-exiting[data-side=R] {
    z-index: 9;
  }
}

.br-mode-2up--flipping-right {
  .BRpage-entering[data-side=L] {
    z-index: 10;
    transform-origin: right;
  }

  .BRpage-exiting[data-side=R] {
    z-index: 10;
    transform-origin: left;
  }

  .BRpage-exiting[data-side=L] {
    z-index: 9;
  }
}