:root {
  --book-box-color-name-black: #181a1f;

  /* dark */
  --book-box-color-name-dark: #292d34;
  --book-box-color-name-dark-black: #21252b;
  --book-box-color-name-dark-gray: #343942;

  /* light */
  --book-box-color-name-light-white: #fafafa;
  --book-box-color-name-light: #f1f3f5;
  --book-box-color-name-light-gray: #ebebec;
  --book-box-color-name-light-gray-medium: #e8e8e8;

  --book-box-color-name-gray-light: #abb2be;
  --book-box-color-name-gray-light-medium: #9da5b3;
  --book-box-color-name-gray: #5c6370;
  --book-box-color-name-gray-dark: #4c5363;
  --book-box-color-name-gray-blue: #7587a6;

  --book-box-color-name-blue: #558efc;
  --book-box-color-name-blue-light: #598cef;
  --book-box-color-name-blue-dark: #507ac9;
  --book-box-color-name-blue-sky: #65b0ed;
  --book-box-color-name-cyan: #5bb6c1;
  --book-box-color-name-red: #bc514a;
  --book-box-color-name-red-light: #de6d77;
  --book-box-color-name-green-light: #99c27c;
  --book-box-color-name-green-herbal: #5c893c;
  --book-box-color-name-orange-light: #d0996a;
  --book-box-color-name-orange-dark: #ac885b;
  --book-box-color-name-yellow-light: #e4bf7f;
  --book-box-color-name-yellow: #e9c062;
  --book-box-color-name-violet-light: #c57bdb;
  --book-box-color-name-violet: #9545ad;
  --book-box-color-name-white: #ffffff;

  --book-box-color-label-dark: rgb(29, 29, 29);
  --book-box-color-label-sepia: rgb(241, 226, 192);
}
.book-box {
  --book-box-color-background: white;
  --book-box-color-background-hover: rgb(239, 246, 255);
  --book-box-color-background-accent: rgb(221, 236, 255);
  --book-box-color-text: black;
  --book-box-color-text-secondary: gray;
  --book-box-color-text-accent: rgb(0, 96, 185);
  --book-box-color-page: var(--book-box-color-text-secondary);
  --book-box-color-shadow: gray;
  --book-box-color-divider: rgb(222, 225, 231);
  --book-box-size-text: 1em;
  --book-box-size-text-small: 0.9em;
  --book-box-size-text-control: 1rem;
  --book-box-size-text-line: calc(1.5 * var(--book-box-size-text));
  --book-box-size-elem-control: 2rem;
  --book-box-size-offset: 2em;
  --book-box-size-offset-small: 8px;
  --book-box-size-page-column-width: 2em;
  --book-box-size-offset-right: calc(max(var(--book-box-size-offset), var(--book-box-size-page-column-width)));

  --book-box-size-content-max-width: 800px;
  --book-box-size-page-max-width: calc(100vw - var(--book-box-size-offset) - var(--book-box-size-offset-right));

  --book-box-z-index-content: 10000;
  --book-box-z-index-settings: 10001;
  --book-box-z-index-settings-view: 10001;
  --book-box-z-index-panel: 10003;

  color: var(--book-box-color-text);
  background-color: var(--book-box-color-background);
  position: relative;
  line-height: var(--book-box-size-text-line);
  font-family: var(--book-box-font, sans-serif);
  hyphens: auto;
}

.book-box:fullscreen {
  overflow: auto;
}

.book-box_theme-dark {
  --book-box-color-background: var(--book-box-color-label-dark);
  --book-box-color-background-hover: rgb(41, 45, 49);
  --book-box-color-background-accent: rgb(67, 73, 82);
  --book-box-color-text: rgb(224, 224, 224);
  --book-box-color-text-secondary: rgb(167, 164, 164);
  --book-box-color-text-accent: rgb(57, 144, 224);
  --book-box-color-page: var(--book-box-color-text-secondary);
  --book-box-color-shadow: rgb(82, 81, 81);
  --book-box-color-divider: rgb(114, 115, 117);
}

.book-box_theme-sepia {
  --book-box-color-background: var(--book-box-color-label-sepia);
  --book-box-color-background-hover: rgb(221, 205, 169);
  --book-box-color-background-accent: rgb(216, 196, 149);
  --book-box-color-text: rgb(33, 24, 24);
  --book-box-color-text-secondary: rgb(107, 81, 81);
  --book-box-color-text-accent: rgb(154, 55, 55);
  --book-box-color-page: var(--book-box-color-text-secondary);
  --book-box-color-shadow: rgb(126, 95, 95);
  --book-box-color-divider: rgb(105, 77, 77);
}

.book-box span {
  line-height: var(--book-box-size-text-line);
}

/* .book-box span {
    border-left: 1px solid red;
    border-top: 1px solid red;
} */

.book-box_layout {
  position: relative;
}

.book-box_content-container {
  display: grid;
  grid-template-columns: auto 1fr;
  position: relative;
  max-width: var(--book-box-size-page-max-width);
}

.book-box_content-container > .book-box_layout-tabs {
  position: sticky;
  top: 0;
  --h: var(--book-box-size-settings-height, 100vh);
  max-height: var(--h);
  height: var(--h);
  width: 300px;
  max-width: 100vw;
  min-width: 200px;
  border-right: 1px solid var(--book-box-color-divider);
  background: var(--book-box-color-background);
  overflow: auto;
  resize: horizontal;
  z-index: var(--book-box-z-index-settings);
}

.book-box_content-container > .book-box_layout-tabs .book-box_layout-settings-contents-item {
  font-size: 0.7em;
}

.book-box_content-container
  > .book-box_layout-tabs
  .book-box_layout-settings-contents-item
  :is(h1, h2, h3, h4, h5, h6) {
  margin: 0.1em;
}

@media (max-width: 1200px) {
  .book-box_content-container {
    grid-template-columns: 1fr;
  }
  .book-box_content-container > .book-box_layout-tabs {
    border-top: 1px solid var(--book-box-color-divider);
    border-top-right-radius: 8px;
    position: fixed;
    margin-top: 3rem;
    --sh: calc(var(--h) - 3rem);
    max-height: var(--sh);
    height: var(--h);
  }
}

/* Settings */

.book-box_layout-settings {
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: var(--book-box-z-index-settings);
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0.5rem;
}

.book-box_layout-settings-item {
  display: block;
  padding: 4px;
  background-color: var(--book-box-color-background-accent);
  border-radius: 4px;
  cursor: pointer;
  text-align: center;
  width: 1.2rem;
  height: 1.2rem;
  line-height: 1.2rem;
  font-size: 1.4rem;
}

.book-box_layout-settings-panel .book-box_layout-panel-header {
  position: sticky;
  top: 0;
}

.book-box_layout-settings-namespace .book-box_layout-panel {
  grid-template-columns: 1fr auto;
}

.book-box_layout-settings-navigation_item {
  padding: 4px 1rem;
}

.book-box_layout-settings-navigation_item:hover {
  background-color: var(--book-box-color-background-hover);
  color: var(--book-box-color-text-accent);
  cursor: pointer;
}
/* End: Settings */

/* Contents */

.book-box_layout-settings-contents .book-box_layout-panel {
  grid-template-columns: 1fr auto;
}

.book-box_layout-settings-contents .book-box_layout-panel-content {
  max-width: max(50vw, 300px);
  font-size: 0.8em;
  overflow: auto;
}

.book-box_layout-settings-contents-item {
  padding: 4px 1rem;
}

.book-box_layout-settings-contents-item:hover {
  background-color: var(--book-box-color-background-hover);
  color: var(--book-box-color-text-accent);
  cursor: pointer;
}

.book-box_layout-settings-contents-item-current {
  background-color: var(--book-box-color-background-accent);
  color: var(--book-box-color-text-accent);
}

/* End: Contents */

/* Media */

.book-box_layout-settings-media .book-box_layout-panel {
  grid-template-columns: 1fr auto;
}

.book-box_layout-settings-media-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, 100px);
}

.book-box_layout-settings-media-item {
  overflow: hidden;
  padding: 4px;
  border-radius: 4px;
}

.book-box_layout-settings-media-item:hover {
  background-color: var(--book-box-color-background-hover);
  cursor: pointer;
}

/* End: Media */

/* Design */

.book-box_layout-settings-design .book-box_layout-panel {
  grid-template-columns: 1fr auto;
}

.book-box_layout-settings-design .book-box_layout-panel-content > div:last-child {
  padding: var(--book-box-size-offset-small);
}

.book-box_layout-settings-design-theme {
  border: 1px solid var(--book-box-color-divider);
  padding: 4px 8px;
  border-radius: var(--book-box-size-offset-small);
  display: inline-flex;
  gap: 8px;
  cursor: pointer;
}

.book-box_layout-settings-design-theme > div:first-child {
  border-radius: 50%;
  border: 1px solid var(--book-box-color-divider);
  height: 1.5em;
  width: 1.5em;
  display: flex;
  justify-content: center;
  align-items: center;
}

.book-box_layout-settings-design-theme:nth-child(1) > div::after,
.book-box_theme-dark .book-box_layout-settings-design-theme:nth-child(2) > div::after,
.book-box_theme-sepia .book-box_layout-settings-design-theme:nth-child(3) > div::after {
  content: '';
  display: block;
  background-color: var(--book-box-color-text);
  width: 0.5em;
  height: 0.5em;
  border-radius: 50%;
}

.book-box_theme-dark .book-box_layout-settings-design-theme:not(:nth-child(2)) > div::after,
.book-box_theme-sepia .book-box_layout-settings-design-theme:not(:nth-child(3)) > div::after {
  display: none;
}

/* End: Design */

/* Panel */

.book-box_layout-panel-tumbler {
  display: none;
}

.book-box_layout-panel-tumbler:checked + label + .book-box_layout-panel {
  display: grid;
  opacity: 1;
  pointer-events: unset;
}

.book-box_layout-panel-tumbler-fast + label + .book-box_layout-panel {
  display: grid;
  opacity: 0;
  pointer-events: none;
}

.book-box_layout-panel {
  display: none;
  position: fixed;
  z-index: var(--book-box-z-index-panel);
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  width: 100vw;
  height: 100vh;
}

.book-box_layout-panel .book-box_layout-panel-content {
  background-color: var(--book-box-color-background);
  box-shadow: 0 0 10px var(--book-box-color-shadow);
  overscroll-behavior: none;
  overflow: scroll;
  min-width: 300px;
  max-width: 100vw;
}

.book-box_layout-panel .book-box_layout-panel-tumbler {
  display: none;
}

.book-box_layout-panel-content .book-box-header-mark {
  display: none;
}

.book-box_layout-panel-content .book-box-page {
  display: none;
}

.book-box_layout-panel-header {
  max-height: var(--book-box-size-elem-control);
  display: grid;
  grid-template-columns: 1fr auto;
  background: var(--book-box-color-background);
  border-bottom: 1px solid var(--book-box-color-divider);
  z-index: var(--book-box-z-index-panel);
}

.book-box_layout-panel-header > div {
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: var(--book-box-size-elem-control);
  padding: 0 var(--book-box-size-offset-small);
  font-size: var(--book-box-size-text-control);
}

/* End: Panel */

/* Controls */

.book-box_control-close {
  width: var(--book-box-size-elem-control);
  height: var(--book-box-size-elem-control);
  line-height: var(--book-box-size-elem-control);
  font-size: 1.8rem;
  text-align: center;
}

/* End Controls */

/* Tabs */

.book-box_layout-tabs {
  background: var(--book-box-color-background);
  display: flex;
  flex-wrap: wrap;
  position: relative;
}

.book-box_layout-tabs > input {
  display: none;
}

.book-box_layout-tabs > label {
  display: flex;
  height: 2.5rem;
  flex-grow: 2;
  cursor: pointer;
  justify-content: center;
  align-items: center;
}

.book-box_layout-tabs > label:hover {
  background-color: var(--book-box-color-background-hover);
}

.book-box_layout-tabs > input:checked + label {
  background-color: var(--book-box-color-background-accent);
}

.book-box_layout-tabs > div {
  opacity: 0;
  display: none;
  left: 0;
  position: absolute;
  top: 2.5rem;
  width: 100%;
  z-index: -1;
}

.book-box_layout-tabs > input:checked:nth-of-type(1) ~ div:nth-of-type(1),
.book-box_layout-tabs > input:checked:nth-of-type(2) ~ div:nth-of-type(2),
.book-box_layout-tabs > input:checked:nth-of-type(3) ~ div:nth-of-type(3),
.book-box_layout-tabs > input:checked:nth-of-type(4) ~ div:nth-of-type(4),
.book-box_layout-tabs > input:checked:nth-of-type(5) ~ div:nth-of-type(5),
.book-box_layout-tabs > input:checked:nth-of-type(6) ~ div:nth-of-type(6),
.book-box_layout-tabs > input:checked:nth-of-type(7) ~ div:nth-of-type(7),
.book-box_layout-tabs > input:checked:nth-of-type(8) ~ div:nth-of-type(8),
.book-box_layout-tabs > input:checked:nth-of-type(9) ~ div:nth-of-type(9),
.book-box_layout-tabs > input:checked:nth-of-type(10) ~ div:nth-of-type(10) {
  display: block;
  opacity: 1;
  z-index: 1;
  border-top: 1px solid var(--book-box-color-divider);
}

/* End Tabs */

/* Settings view */

.book-box_layout-settings-view {
  position: fixed;
  top: 0;
  right: 0;
  z-index: var(--book-box-z-index-settings-view);
  margin: 0.5rem;
}

.book-box_layout-settings-view-tumbler {
  display: none;
}

.book-box_layout-settings-view-tumbler + label::after {
  content: '⤢';
}

.book-box:fullscreen .book-box_layout-settings-view-tumbler + label::after{
  content: '⤦';
}

/* End: Settings view */

/* Settings settings */

.book-box_layout-settings-settings {
  position: sticky;
  top: 0.5rem;
  left: 0;
  z-index: var(--book-box-z-index-settings-view);
  margin: 0.5rem;
}

.book-box_layout-settings-settings::after {
  content: '⚙';
}

.book-box_layout-settings-settings-tumbler:checked + div .book-box_layout-settings-settings::after {
  content: '«';
}

.book-box_layout-settings-settings-tumbler:not(:checked) + .book-box_content-container {
  grid-template-columns: 1fr;
}

.book-box_layout-settings-settings-tumbler:not(:checked) + div > .book-box_layout-tabs {
  display: none;
}

/* End: Settings settings */

/* Content */

.book-box_content {
  color: var(--book-box-color-text);
  background-color: var(--book-box-color-background);
  overflow: hidden;
}

.book-box_content > div {
  position: relative;
  max-width: calc(min(var(--book-box-size-content-max-width), var(--book-box-size-page-max-width)));
  padding: 16px var(--book-box-size-offset);
  padding-right: var(--book-box-size-offset-right);
  margin: auto;
}

@media (max-width: 400px) {
  .book-box {
    --book-box-size-offset: 1em;
  }
}

/* End: Content */

/* Media */

.book-box_media-figure {
  margin: 0;
  width: 100%;
}

.book-box_media-figure > div {
  width: 100%;
  display: flex;
}

.book-box_media-figure picture {
  width: 100%;
  display: flex;
}

.book-box_media-figure-caption {
  display: flex;
  text-align: center;
  font-size: 0.9em;
  font-style: italic;
}

.book-box_media-inline {
  display: inline-block;
  width: auto;
}

.book-box_media-inline > figure > div {
  display: inline-block;
  width: auto;
}

.book-box_media-block {
  display: flex;
}

.book-box_media-full {
  justify-content: stretch;
}

.book-box_media-center > figure > div {
  justify-content: center;
}

.book-box_media-center > figure > figcaption {
  justify-content: center;
}

.book-box_media-center > figure picture {
  justify-content: center;
}

.book-box_media-start > figure > div {
  justify-content: flex-start;
}

.book-box_media-start > figure > figcaption {
  justify-content: flex-start;
}

.book-box_media-start > figure picture {
  justify-content: flex-start;
}

.book-box_media-end > figure > div {
  justify-content: flex-end;
}

.book-box_media-end > figure > figcaption {
  justify-content: flex-end;
}

.book-box_media-end > figure picture {
  justify-content: flex-end;
}

.book-box_align-center {
  text-align: center;
}

.book-box_align-start {
  text-align: start;
}

.book-box_align-end {
  text-align: end;
}

/* End Media */

/* Loadable */

.book-box_loadable-content {
  display: none;
  opacity: 0;
  pointer-events: none;
}

.book-box_loadable-loaded .book-box_loadable-content {
  display: block;
  opacity: 1;
  pointer-events: inherit;
}

.book-box_loadable-progress {
  background-color: lightgray;
  color: black;
  height: 100%;
  width: 100%;
  overflow: scroll;
  word-wrap: break-word;
}

.book-box_loadable-loaded .book-box_loadable-progress {
  display: none;
}

.book-box_loadable-error {
  background-color: lightcoral;
  display: none;
}

.book-box_loadable-error-loaded .book-box_loadable-error {
  display: block;
}

.book-box_loadable {
  background: var(--book-box-color-background-hover);
  padding: 8px;
  border-radius: 8px;
}

.book-box_layout-offline .book-box_loadable {
  box-shadow: 5px 5px gray;
}

/* End Loadable */

/* Clickable */

.book-box_clickable:hover {
  cursor: pointer;
  color: var(--book-box-color-text-accent);
}

/* End Clickable */

/* Highlight */

.book-box_highlight {
  color: var(--book-box-color-text-accent);
  transition: color 1s;
}

/* End Highlight */

/* Elements: */

.book-box-title {
  text-align: center;
}

.book-box-authors {
  text-align: center;
  padding: 1rem;
}

.book-box-draft {
  display: inline-block;
  border: 5px solid red;
  padding: 2px;
  --yellow: rgb(255, 255, 161);
  --red: rgb(255, 217, 179);
  background-color: var(--yellow);
  color: black;

  background: repeating-linear-gradient(-45deg, var(--yellow), var(--yellow) 20px, var(--red) 20px, var(--red) 40px);
}

.book-box-header {
  display: inline-block;
}

.book-box-header-mark {
  display: inline-block;
  min-height: 1rem;
  max-height: 2rem;
  font-size: 1rem;
  line-height: 1em;
  font-weight: normal;
  padding: 4px;
  color: var(--book-box-color-text-secondary);
  opacity: 0;
}

.book-box-header-container:hover .book-box-header-mark {
  opacity: 1;
}

.book-box-label {
  display: inline-block;
}

.book-box-label-mark {
  cursor: pointer;
  border: 1px solid var(--book-box-color-divider);
}

.book-box-label-panel-mark {
  display: inline-block;
  font-style: italic;
  color: var(--book-box-color-text-secondary);
}

.book-box-label-panel-content {
  padding: var(--book-box-size-offset-small);
}

.book-box-label-panel-header {
  padding: 0 var(--book-box-size-offset-small);
  height: 100%;
}

.book-box-label-panel-goto {
  font-size: 0.9em;
  padding: 2px 4px;
  margin: 4px 0;
  border: 1px solid var(--book-box-color-divider);
  border-radius: 4px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  height: 1.2em;
}

.book-box-label-panel-header .book-box-label-panel-goto {
  margin-left: 4px;
}

.book-box-label-panel-goto:hover {
  color: var(--book-box-color-text-accent);
  cursor: pointer;
}

.book-box-label-input + label {
  padding: 2px 4px;
  border-radius: 2px;
}

.book-box-label-input:checked + label {
  background: var(--book-box-color-background-accent);
  color: var(--book-box-color-text-accent);
  border-color: transparent;
}

.book-box-label-data {
  grid-template-rows: 1fr auto;
}

.book-box-label-data .book-box_layout-panel-content {
  max-height: 70vh;
}

.book-box-label-data .book-box-page {
  display: none;
}

.book-box-label-data .book-box-header-mark {
  display: none;
}

.book-box-format-small {
  font-size: var(--book-box-size-text-small);
}

.book-box-external {
  border: 1px solid var(--book-box-color-divider);
  padding: var(--book-box-size-offset-small);
  border-radius: var(--book-box-size-offset-small);
}

.book-box-page {
  position: absolute;
  background-color: var(--book-box-color-background);
  color: var(--book-box-color-page);
  font-size: calc(var(--book-box-size-text) * 0.8);
  font-weight: normal;
  font-style: normal;
  font-family: sans-serif;
  line-height: 1.5rem;
  right: 0;
  max-width: var(--book-box-size-offset-right);
  text-align: right;
  padding: 0 8px;
}

.book-box-area {
  display: block;
}

.book-box-area.book-box-area-inline {
  display: inline-block;
}

.book-box-link {
  color: var(--book-box-color-text-accent);
}

.book-box-audio audio {
  max-width: 100%;
}

.book-box-code pre {
  font-family: Menlo, monospace;
  border: 1px solid var(--book-box-color-divider);
  border-radius: var(--book-box-size-offset-small);
  padding: 2px 4px;
  margin: 0;
  width: 100%;
}

.book-box-code-with-lang pre {
  border-top-left-radius: 0;
}

.book-box-code-lang-mark {
  display: inline-block;
  padding: 2px 4px;
  font-size: 0.9em;
  font-style: italic;
  color: var(--book-box-color-text-secondary);
  border: 1px solid var(--book-box-color-divider);
  border-bottom: none;
  border-radius: var(--book-box-size-offset-small) var(--book-box-size-offset-small) 0 0;
}

.book-box-list {
  margin: var(--book-box-size-offset-small) 0;
}

.book-box-separator {
  height: 2px;
  background-color: var(--book-box-color-divider);
  border: none;
}

.book-box-table > figure > div > div {
  max-width: 100%;
  overflow-x: auto;
  justify-content: unset;
}

.book-box-table table {
  border: 1px solid var(--book-box-color-divider);
  border-collapse: collapse;
  padding: 0;
  margin: 0;
}

.book-box-table thead {
  white-space: nowrap;
}

.book-box-table th {
  font-weight: normal;
}

.book-box-table [data-name='cell'] {
  border: 1px solid var(--book-box-color-divider);
  padding: 0 1em;
  min-width: 1em;
}

.book-box--error {
  border: 1px solid red;
  border-radius: var(--book-box-size-offset-small);
  padding: var(--book-box-size-offset-small);
  margin: var(--book-box-size-offset-small) 0;
}

.book-box--error pre {
  word-break: break-all;
  white-space: pre-wrap;
}

/* End Elements */