body {
  --next-previous-page-width: 30%; /* Must be between 0% and 50% */
  --footer-height: 4em;
  /*
  background: var(--background-gradient), var(--background-image);
  background-blend-mode: multiply;
  background-position: center;
  */
  overflow: hidden;
  display: grid;
  place-content: center;
  height: 100vh;
}

body.continuousScrolling {
  height: unset;
  overflow-y: visible;
}

#goBackToCatalog > a:link {
  font-size: 100%;
  color: #FFFFFF;
  text-decoration: none;
}

#goBackToCatalog > a:visited {
  font-size: 100%;
  color: #FFFFFF;
  text-decoration: none;
}

#goBackToCatalog > a:hover {
  font-size: 100%;
  color: #FFFFFF;
  text-decoration: underline;
}

#goBackToCatalog > a:active {
  font-size: 100%;
  color: #FFFFFF;
  text-decoration: underline;
}

#eyeFilter.enabled {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;

  background-color: rgba(255,200,130);
  opacity: 0.5;
  mix-blend-mode: multiply;
  z-index: 20;
  pointer-events: none;
}

.disabled {
  display: none;
}

.slider {
  -webkit-appearance: none;
  height: 0.5em;
  border-radius: 1em;
  background: lightgray;
  outline: none;
  --slider-thumb-size: 1;

}

.slider.inUse {
  --slider-thumb-size: 1.2;
}

.slider::-webkit-slider-thumb {
  transform: scale(var(--slider-thumb-size));
  transition: 0.15s transform;
  -webkit-appearance: none;
  appearance: none;
  width: 1em;
  height: 1em;
  border-radius: 50%;
  background: var(--menu-text-color);
  cursor: pointer;
  border: none;

}

body.darkTheme .slider::-webkit-slider-thumb {
  filter: drop-shadow(0 0 .7em black);
}

body.darkTheme .slider::-moz-range-thumb {
  filter: drop-shadow(0 0 .7em black);
}

.slider::-moz-range-thumb {
  transform: scale(var(--slider-thumb-size));
  transition: 0.15s transform;
  width: 1em;
  height: 1em;
  border-radius: 50%;
  background: var(--menu-text-color);
  cursor: pointer;
  border: none;
}

img, #bookChapter, #configMenu, #bottomMenu {
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -o-user-select: none;
  user-select: none;
}

select {
  border: none;
  padding-right: .5em;
  background: none !important;
}

select > option {
    background-color: var(--menu-background-color);
    font-size: 100% !important;
}

.transition {
  transition: transform ease 200ms;
}

#loaderContainer {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  display: grid;
  place-content: center;
  pointer-events: none;
  touch-action: none;
  z-index: 25;
}

#loaderContainer > #loader {
  animation: rotate 2s linear infinite;
  transform-origin: center center;
  filter: drop-shadow(0 0 3vmin rgba(0, 0, 0, 0.5));
  width: 0;
  height: 0;
  transition: .5s width, .5s height;
}

#loaderContainer > #loader > .path {
  stroke-dasharray: 1, 200;
  stroke-dashoffset: 0;
  animation: dash 1.5s ease-in-out infinite;
  stroke: white;
  stroke-linecap: round;
  stroke-width: 0;
  transition: .5s stroke-width;
}

#loaderContainer > #loader.enabled > .path {
  stroke-width: 0.7vmin;
}

#loaderContainer > #loader.enabled {
  width: 15vmin;
  height: 15vmin;
}

@media screen and (max-width: 90vh) {

  #loaderContainer > #loader.enabled {
    width: 30vmin;
    height: 30vmin;
  }

  #loaderContainer > #loader.enabled > .path {
    stroke-width: 1vmin;
  }
}


@keyframes rotate {
  100% {
    transform: rotate(360deg);
  }
}

@keyframes dash {
  0% {
    stroke-dasharray: 1, 200;
    stroke-dashoffset: 0;
  }
  50% {
    stroke-dasharray: 89, 200;
    stroke-dashoffset: -35px;
  }
  100% {
    stroke-dasharray: 89, 200;
    stroke-dashoffset: -124px;
  }
}