/* Reposen book-view presentation layer. Loaded after the PDF.js styles. */

.reposen-book-mode #viewerContainer {
  perspective: 1800px;
  overscroll-behavior: contain;
}

.reposen-animated-book-mode #viewerContainer {
  touch-action: pan-y pinch-zoom;
}

.reposen-book-view > .spread {
  transform-origin: center center;
  backface-visibility: hidden;
  will-change: transform, opacity;
}

.reposen-book-view > .spread .page {
  box-shadow: 0 4px 18px rgb(0 0 0 / 0.18);
}

.reposen-book-view > .spread .page:first-child:not(:only-child) {
  box-shadow: -5px 4px 18px rgb(0 0 0 / 0.16);
}

.reposen-book-view > .spread .page:last-child:not(:only-child) {
  box-shadow: 5px 4px 18px rgb(0 0 0 / 0.16);
}

.reposen-book-navigation {
  position: fixed;
  inset: var(--toolbar-height) 0 0;
  z-index: 6;
  pointer-events: none;
}

.pdfPresentationMode .reposen-book-navigation {
  inset-block-start: 0;
}

.reposen-book-navigation-button {
  position: absolute;
  top: 50%;
  width: 46px;
  height: 72px;
  padding: 0;
  border: 1px solid rgb(0 0 0 / 0.2);
  border-radius: 8px;
  background: light-dark(rgb(255 255 255 / 0.88), rgb(40 40 43 / 0.88));
  color: light-dark(rgb(30 30 30), rgb(245 245 245));
  box-shadow: 0 3px 12px rgb(0 0 0 / 0.24);
  font: 42px/1 system-ui, sans-serif;
  cursor: pointer;
  pointer-events: auto;
  transform: translateY(-50%);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
}

.reposen-book-navigation-button:hover:not(:disabled) {
  background: light-dark(rgb(255 255 255 / 0.98), rgb(55 55 60 / 0.98));
  box-shadow: 0 4px 16px rgb(0 0 0 / 0.3);
}

.reposen-book-navigation-button:focus-visible {
  outline: var(--focus-ring-outline);
  outline-offset: 2px;
}

.reposen-book-navigation-button:disabled {
  visibility: hidden;
  cursor: default;
}

.reposen-book-previous {
  inset-inline-start: 14px;
}

.reposen-book-next {
  inset-inline-end: 14px;
}

.reposen-page-flip-layer.pdfViewer {
  position: fixed;
  inset: 0;
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  pointer-events: none;
  transform-style: preserve-3d;
  z-index: 5;
}

.reposen-page-flip-sheet {
  --reposen-turn-shadow: 0;
  --reposen-turn-radius: 0px;
  position: absolute;
  margin: 0;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  will-change: transform;
}

.reposen-page-flip-sheet.is-next {
  transform-origin: left center;
}

.reposen-page-flip-sheet.is-previous {
  transform-origin: right center;
}

.reposen-page-flip-sheet.is-settling {
  transition-property: transform;
  transition-timing-function: cubic-bezier(0.22, 0.7, 0.25, 1);
}

.reposen-page-flip-front.page,
.reposen-page-flip-back {
  position: absolute;
  inset: 0;
  box-sizing: border-box;
  width: 100% !important;
  height: 100% !important;
  margin: 0 !important;
  overflow: hidden;
  border: 0 !important;
  border-radius: var(--reposen-turn-radius);
  backface-visibility: hidden;
  user-select: none;
}

.reposen-page-flip-front.page {
  transform: translateZ(0.5px);
  box-shadow: 0 7px 25px rgb(0 0 0 / 0.38);
}

.reposen-page-flip-back {
  background:
    linear-gradient(
      90deg,
      rgb(255 255 255 / 0.82),
      rgb(225 225 225 / 0.62),
      rgb(255 255 255 / 0.94)
    );
  box-shadow: 0 5px 24px rgb(0 0 0 / 0.32);
  transform: rotateY(180deg) translateZ(0.5px);
}

.reposen-page-flip-sheet::after {
  position: absolute;
  inset: 0;
  content: "";
  border-radius: var(--reposen-turn-radius);
  background: linear-gradient(
    90deg,
    transparent 45%,
    rgb(0 0 0 / 0.18) 78%,
    rgb(255 255 255 / 0.2)
  );
  backface-visibility: hidden;
  opacity: var(--reposen-turn-shadow);
  pointer-events: none;
  transform: translateZ(1px);
}

.reposen-page-turning #viewer {
  pointer-events: none;
  user-select: none;
}

@media (prefers-reduced-motion: no-preference) {
  .reposen-book-turn-next > .spread {
    animation: reposen-book-turn-next 260ms cubic-bezier(0.2, 0.65, 0.35, 1);
  }

  .reposen-book-turn-previous > .spread {
    animation: reposen-book-turn-previous 260ms cubic-bezier(0.2, 0.65, 0.35, 1);
  }

  @keyframes reposen-book-turn-next {
    from {
      opacity: 0.35;
      transform: translateX(28px) rotateY(-5deg) scale(0.99);
    }
    to {
      opacity: 1;
      transform: translateX(0) rotateY(0) scale(1);
    }
  }

  @keyframes reposen-book-turn-previous {
    from {
      opacity: 0.35;
      transform: translateX(-28px) rotateY(5deg) scale(0.99);
    }
    to {
      opacity: 1;
      transform: translateX(0) rotateY(0) scale(1);
    }
  }
}

@media all and (max-width: 700px) {
  .reposen-book-navigation-button {
    width: 38px;
    height: 58px;
    border-radius: 6px;
    font-size: 34px;
  }

  .reposen-book-previous {
    inset-inline-start: 6px;
  }

  .reposen-book-next {
    inset-inline-end: 6px;
  }
}

@media (forced-colors: active) {
  .reposen-book-navigation-button {
    border: 1px solid ButtonText;
    background: ButtonFace;
    color: ButtonText;
    forced-color-adjust: auto;
  }

  .reposen-page-flip-back {
    border: 1px solid CanvasText !important;
    background: Canvas;
  }
}