:root {
  --internal-color-error: #d26466;
}

.main-grid * {
  box-sizing: border-box;
  line-height: 1.5;
}

.main-grid {
  background: var(--color-background);
  color: var(--color-text);
}

a {
  color: var(--color-brand);
}

#dark-mode-toggle {
  margin-right: 16px;
  line-height: 1;
}

ul,
ol,
li {
  padding: 0;
  margin: 0;
}

side-drawer {
  position: absolute;
  width: 500px;
}

#nav-drawer {
  background: var(--color-nav);
  border-right-color: var(--color-nav-border);
}

.sidebar>.author,
.nav-drawer-content>.author {
  color: var(--color-author-color);
  background: var(--color-author-background);
}

.sidebar>.author:hover,
.nav-drawer-content>.author:hover {
  color: var(--color-brand);
}

/* Three bars for burger menu */
.toggle>.bar1,
.toggle>.bar2,
.toggle>.bar3 {
  background-color: var(--color-brand-text);
}

.inverted .toggle>.bar1,
.inverted .toggle>.bar2,
.inverted .toggle>.bar3 {
  background-color: var(--color-brand);
}

header {
  background: var(--color-brand);
}

header.inverted {
  background: var(--color-brand-text);
}

.branding {
  color: var(--color-brand-text);
  flex: 1;
}

.branding:hover {
  color: var(--color-brand-text);
}

header.inverted>.branding {
  color: var(--color-brand);
}

header.inverted>.branding:hover {
  color: var(--color-brand);
}

.meta {
  border-top-color: var(--color-spacer);
}

.section>.name {
  color: var(--color-text);
  border-color: var(--color-spacer);
}

.section>.name>.label {
  color: var(--color-text);
}

.section>.name.active>.label {
  color: var(--color-brand);
}

.section .name.empty {
  color: var(--color-text-deactivated);
  cursor: pointer;
  font-style: italic;
}

.section>.name:hover {
  background: var(--color-spacer);
}

.section>.name.empty:hover {
  background: none;
}

.section>.name.active {
  background: var(--color-background);
  color: var(--color-brand);
}

.page {
  color: var(--color-text);
}

.page:hover {
  color: var(--color-text);
  background: var(--color-spacer);
}

.page.active {
  background: var(--color-background);
  color: var(--color-brand);
}

.section>.links {
  border-left-color: var(--color-spacer);
}

a.jump {
  border-color: var(--color-brand);
}

a.jump:hover {
  background: var(--color-nav);
}

a.jump {
  text-decoration: none;
  flex: 1;
  text-align: center;
  border-style: solid;
  border-width: 1px;
  padding: 8px 16px;
  width: 100%;
  border-radius: 8px;
  box-shadow: rgba(0, 0, 0, 0.24) 0px 1px 2px;
}

a.jump.next {
  margin-left: 8px;
}

a.jump.next::after {
  content: " →";
}

a.jump.previous {
  margin-right: 8px;
}

a.jump.previous::before {
  content: "← ";
}

@media screen and (max-width: 800px) {
  .jump-container {
    flex-direction: column;
  }

  a.jump.next {
    margin-left: 0px;
    margin-top: 16px;
  }

  a.jump.previous {
    margin-right: 0px;
    margin-top: 16px;
  }
}

.border {
  border-color: var(--color-spacer);
}

.loading {
  background: var(--color-nav);
}

.main-grid {
  font-family: hyperbook-body, sans-serif;
  display: grid;
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  grid-template-columns: var(--nav-width) 1fr;
  grid-template-rows: var(--header-height) 1fr;
  grid-template-areas:
    "header header header"
    "nav article article";
}

.nav-drawer-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  grid-area: nav;
  overflow-y: auto;
}

.sidebar {
  font-size: var(--nav-font-size);
  display: flex;
  flex-direction: column;
  grid-area: nav;
  overflow-y: auto;
  scrollbar-width: thin;
  border-right-style: solid;
  border-right-width: 1px;
  background: var(--color-nav);
  border-right-color: var(--color-nav-border);
}

.sidebar>nav,
.nav-drawer-content>nav {
  padding: 20px;
  flex: 1;
}

.sidebar>.author,
.nav-drawer-content>.author {
  text-align: center;
  text-decoration: none;
  padding: 20px;
}

.sidebar>.author,
.nav-drawer-content>.author>b {
  font-weight: bold;
}

.mobile-nav {
  display: none;
  margin-left: 16px;
}

.mobile-nav .toggle {
  font-size: 42px;
  border: none;
  padding: 0;
  margin: 0;
  background: none;
  width: 40px;
  height: 40px;
  cursor: pointer;
}

.toggle>.bar1,
.toggle>.bar2,
.toggle>.bar3 {
  width: 30px;
  height: 4px;
  margin: 6px 0;
  transition: 0.4s;
}

/* Rotate first bar */
.change .bar1 {
  transform: rotate(-45deg) translate(-8px, 8px);
}

/* Fade out the second bar */
.change .bar2 {
  opacity: 0;
}

/* Rotate last bar */
.change .bar3 {
  transform: rotate(45deg) translate(-8px, -8px);
}

@media screen and (max-width: 1280px) {
  .main-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "header"
      "article";
  }

  .mobile-nav {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .sidebar {
    display: none;
  }
}

main {
  padding: 20px 40px;
  overflow-y: auto;
}

article {
  max-width: var(--main-width);
  margin: 0 auto;
  grid-area: article;
  line-height: 1.5;
}

header {
  display: flex;
  grid-area: header;
  margin: 0;
  padding: 0;
  align-items: center;
  z-index: 1001;
  box-shadow: rgba(0, 0, 0, 0.24) 0px 1px 4px;
}

.branding {
  text-decoration: none;
  display: flex;
  padding: 20px;
  line-height: normal;
  align-items: center;
}

.custom-links-menu {
  padding: 20px;
  flex: 1;
  display: flex;
  justify-content: flex-end;
  position: relative;
}

.custom-links-menu .links-menu {
  align-items: center;
  display: flex;
  gap: 16px;
  font-size: 0.85rem;
}

#custom-links-header {
  display: flex;
}

#custom-links-footer {
  display: none;
}

#custom-links-footer ul,
#custom-links-footer li {
  list-style: none;
}

#custom-links-footer a {
  display: flex;
  flex-wrap: nowrap;
  text-decoration: none;
}

#custom-links-footer a .label {
  flex: 1;
  text-align: left;
  white-space: nowrap;
}

#custom-links-footer a .icon {
  margin-right: 8px;
}

#custom-links-footer>.links-item {
  border-radius: 8px;
  padding: 8px;
  border: 1px solid var(--color-nav-border);
  background: var(--color-nav);
  flex: 1;
}

#custom-links-footer .links-sub-menu {
  margin-left: 24px;
}

@media (max-width: 960px) {
  #custom-links-header {
    display: none;
  }

  #custom-links-footer {
    display: flex;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--color-nav-border);
    flex-wrap: wrap;
    gap: 8px;
  }
}

.custom-links-menu .links-menu li:hover .links-sub-menu {
  display: block;
}

.custom-links-menu .links-item {
  box-sizing: border-box;
  font-size: 1rem;
  font-weight: 700;
  position: relative;
  border: 1px solid transparent;
  min-width: 80px;
  text-align: center;
  border-radius: 0.25rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: max-content;
}

.custom-links-menu .links-item.sub::after {
  color: var(--color-brand-text);
  content: "\25BC";
  margin-right: 8px;
}

.custom-links-menu .links-item:hover {
  border: 1px solid var(--color-brand-text);
}

.custom-links-menu .links-sub-menu .links-item {
  font-weight: normal;
}

.custom-links-menu .links-sub-menu .links-item a {
  color: var(--color-text);
}

.custom-links-menu .links-sub-menu .links-item:hover {
  border: 1px solid transparent;
  text-decoration: underline;
}

.custom-links-menu a {
  display: flex;
  width: max-content;
  text-decoration: none;
  padding: 8px;
  color: var(--color-brand-text);
  cursor: pointer;
}

.custom-links-menu a .label {
  flex: 1;
  text-align: left;
}

.custom-links-menu a .icon {
  margin-right: 8px;
}

.custom-links-menu .links-sub-menu .links-item:hover .icon {
  text-decoration: none;
}

.custom-links-menu .links-sub-menu {
  display: none;
  position: absolute;
  left: 50%;
  top: 54px;
  transform: translateX(-50%);
  background-color: var(--color-nav);
  width: max-content;
  border: 1px solid var(--color-nav-border);
  border-radius: 0.25rem;
}

.custom-links-menu .links-sub-menu::before {
  content: " ";
  display: block;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%) translateY(-80%);
  width: 80px;
  height: 40px;
}

.branding .logo {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 10px;
  height: 40px;
  width: auto;
  min-width: 40px;
}

.branding .logo img {
  width: auto;
  height: 100%;
}

.branding .name {
  font-family: hyperbook-heading, sans-serif;
  font-size: 1.1rem;
  font-weight: bold;
}

.jump-container {
  display: flex;
  max-width: var(--main-width);
  margin: 0 auto;
  margin-top: 40px;
}

.flex {
  flex: 1;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  border-top-style: solid;
  border-top-width: 1px;
  margin: 0 auto;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 30px;
  padding-top: 30px;
  max-width: var(--main-width);
}

.meta .edit-github {
  text-decoration: none;
  display: block;
  flex: 1;
}

.meta .vercel {
  text-align: center;
  flex: 1;
}

.meta .copyright {
  text-align: right;
  flex: 1;
}

.section ul,
.virtual-section ul,
nav>ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

nav li+li {
  margin-top: 0px;
}

.section,
.virtual-section {
  display: flex;
  flex-direction: column;
}

.section {
  margin-top: 4px;
}

.section>.name {
  display: flex;
  text-decoration: none;
  padding: 10px;
  border-width: 1px;
  border-style: solid;
  width: 100%;
  user-select: none;
}

.section>.name>.label {
  flex: 1;
  text-decoration: none;
}

.section>.name>.toggle {
  text-align: right;
  background: none;
  border: none;
  font-size: 13px;
}

.collapsible {
  cursor: pointer;
}

.collapsible:after {
  content: "\002B";
  width: 1.2rem;
  color: var(--color-text);
  font-weight: bold;
  text-align: right;
  float: right;
  margin-left: 5px;
}

.collapsible.expanded:after {
  content: "\2212";
}

.collapsible-content {
  display: none;
  opacity: 0;
}

.collapsible.expanded+.collapsible-content {
  display: block;
  opacity: 1;
}

.section .section {
  margin-left: 16px;
  margin-bottom: 0px;
}

.page {
  display: block;
  padding: 10px;
  text-decoration: none;
}

.section>.links {
  border-left-width: 1px;
  border-left-style: solid;
}

.pages {
  margin-top: 30px;
}

.border {
  border-radius: 4px;
  border-style: solid;
  border-width: 1px;
}

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: none;
  font-size: 32px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

nav.toc li {
  margin-bottom: 8px;
}

nav.toc li>a {
  color: var(--color-text);
  text-decoration: none;
}

nav.toc li>a:hover {
  color: var(--color-brand);
}

nav.toc li.level-1 {
  padding-left: 0px;
}

nav.toc li.level-2 {
  padding-left: 8px;
}

nav.toc li.level-3 {
  padding-left: 16px;
}

nav.toc li.level-3 {
  padding-left: 24px;
}

.reset-icon {
  display: inline-block;
  background-color: var(--color-brand);
  width: 24px;
  height: 24px;
  cursor: pointer;
  margin-right: 16px;
  mask-repeat: no-repeat;
  cursor: pointer;
  mask-image: url("data:image/svg+xml;base64,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");
}

.export-icon {
  display: inline-block;
  background-color: var(--color-brand);
  width: 24px;
  height: 24px;
  cursor: pointer;
  margin-right: 16px;
  mask-repeat: no-repeat;
  cursor: pointer;
  mask-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNCIgaGVpZ2h0PSIyNCIgdmlld0JveD0iMCAwIDI0IDI0IiBmaWxsPSJub25lIiBzdHJva2U9ImN1cnJlbnRDb2xvciIgc3Ryb2tlLXdpZHRoPSIyIiBzdHJva2UtbGluZWNhcD0icm91bmQiIHN0cm9rZS1saW5lam9pbj0icm91bmQiIGNsYXNzPSJsdWNpZGUgbHVjaWRlLWRvd25sb2FkIj48cGF0aCBkPSJNMjEgMTV2NGEyIDIgMCAwIDEtMiAySDVhMiAyIDAgMCAxLTItMnYtNCIvPjxwb2x5bGluZSBwb2ludHM9IjcgMTAgMTIgMTUgMTcgMTAiLz48bGluZSB4MT0iMTIiIHgyPSIxMiIgeTE9IjE1IiB5Mj0iMyIvPjwvc3ZnPg==");
}

.import-icon {
  display: inline-block;
  background-color: var(--color-brand);
  width: 24px;
  height: 24px;
  cursor: pointer;
  margin-right: 16px;
  mask-repeat: no-repeat;
  cursor: pointer;
  mask-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNCIgaGVpZ2h0PSIyNCIgdmlld0JveD0iMCAwIDI0IDI0IiBmaWxsPSJub25lIiBzdHJva2U9ImN1cnJlbnRDb2xvciIgc3Ryb2tlLXdpZHRoPSIyIiBzdHJva2UtbGluZWNhcD0icm91bmQiIHN0cm9rZS1saW5lam9pbj0icm91bmQiIGNsYXNzPSJsdWNpZGUgbHVjaWRlLXVwbG9hZCI+PHBhdGggZD0iTTIxIDE1djRhMiAyIDAgMCAxLTIgMkg1YTIgMiAwIDAgMS0yLTJ2LTQiLz48cG9seWxpbmUgcG9pbnRzPSIxNyA4IDEyIDMgNyA4Ii8+PGxpbmUgeDE9IjEyIiB4Mj0iMTIiIHkxPSIzIiB5Mj0iMTUiLz48L3N2Zz4=");
}