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+/* CSS for UI elements (a.k.a. chrome) */
+
+html {
+ scrollbar-color: var(--scrollbar) transparent;
+}
+#mdbook-searchresults a,
+.content a:link,
+a:visited,
+a > .hljs {
+ color: var(--links);
+}
+
+/*
+ mdbook-body-container is necessary because mobile browsers don't seem to like
+ overflow-x on the body tag when there is a <meta name="viewport"> tag.
+*/
+#mdbook-body-container {
+ /*
+ This is used when the sidebar pushes the body content off the side of
+ the screen on small screens. Without it, dragging on mobile Safari
+ will want to reposition the viewport in a weird way.
+ */
+ overflow-x: clip;
+}
+
+/* Menu Bar */
+
+#mdbook-menu-bar,
+#mdbook-menu-bar-hover-placeholder {
+ z-index: 101;
+ margin: auto calc(0px - var(--page-padding));
+}
+#mdbook-menu-bar {
+ position: relative;
+ display: flex;
+ flex-wrap: wrap;
+ background-color: var(--bg);
+ border-block-end-color: var(--bg);
+ border-block-end-width: 1px;
+ border-block-end-style: solid;
+}
+#mdbook-menu-bar.sticky,
+#mdbook-menu-bar-hover-placeholder:hover + #mdbook-menu-bar,
+#mdbook-menu-bar:hover,
+html.sidebar-visible #mdbook-menu-bar {
+ position: -webkit-sticky;
+ position: sticky;
+ top: 0 !important;
+}
+#mdbook-menu-bar-hover-placeholder {
+ position: sticky;
+ position: -webkit-sticky;
+ top: 0;
+ height: var(--menu-bar-height);
+}
+#mdbook-menu-bar.bordered {
+ border-block-end-color: var(--table-border-color);
+}
+#mdbook-menu-bar .fa-svg, #mdbook-menu-bar .icon-button {
+ position: relative;
+ padding: 0 8px;
+ z-index: 10;
+ line-height: var(--menu-bar-height);
+ cursor: pointer;
+ transition: color 0.5s;
+}
+@media only screen and (max-width: 420px) {
+ #mdbook-menu-bar .fa-svg, #mdbook-menu-bar .icon-button {
+ padding: 0 5px;
+ }
+}
+
+.icon-button {
+ border: none;
+ background: none;
+ padding: 0;
+ color: inherit;
+}
+.icon-button .fa-svg {
+ margin: 0;
+}
+
+.right-buttons {
+ margin: 0 15px;
+}
+.right-buttons a {
+ text-decoration: none;
+}
+
+.left-buttons {
+ display: flex;
+ margin: 0 5px;
+}
+html:not(.js) .left-buttons button {
+ display: none;
+}
+
+.menu-title {
+ display: inline-block;
+ font-weight: 200;
+ font-size: 2.4rem;
+ line-height: var(--menu-bar-height);
+ text-align: center;
+ margin: 0;
+ flex: 1;
+ white-space: nowrap;
+ overflow: hidden;
+ text-overflow: ellipsis;
+}
+.menu-title {
+ cursor: pointer;
+}
+
+.menu-bar,
+.menu-bar:visited,
+.nav-chapters,
+.nav-chapters:visited,
+.mobile-nav-chapters,
+.mobile-nav-chapters:visited,
+.menu-bar .icon-button,
+.menu-bar a .fa-svg {
+ color: var(--icons);
+}
+
+.menu-bar .fa-svg:hover,
+.menu-bar .icon-button:hover,
+.nav-chapters:hover,
+.mobile-nav-chapters .fa-svg:hover {
+ color: var(--icons-hover);
+}
+
+/* Nav Icons */
+
+.nav-chapters {
+ font-size: 2.5em;
+ text-align: center;
+ text-decoration: none;
+
+ position: fixed;
+ top: 0;
+ bottom: 0;
+ margin: 0;
+ max-width: 150px;
+ min-width: 90px;
+
+ display: flex;
+ justify-content: center;
+ align-content: center;
+ flex-direction: column;
+
+ transition: color 0.5s, background-color 0.5s;
+}
+
+.nav-chapters:hover {
+ text-decoration: none;
+ background-color: var(--theme-hover);
+ transition: background-color 0.15s, color 0.15s;
+}
+
+.nav-wrapper {
+ margin-block-start: 50px;
+ display: none;
+}
+
+.mobile-nav-chapters {
+ font-size: 2.5em;
+ text-align: center;
+ text-decoration: none;
+ width: 90px;
+ border-radius: 5px;
+ background-color: var(--sidebar-bg);
+}
+
+/* Only Firefox supports flow-relative values */
+.previous { float: left; }
+[dir=rtl] .previous { float: right; }
+
+/* Only Firefox supports flow-relative values */
+.next {
+ float: right;
+ right: var(--page-padding);
+}
+[dir=rtl] .next {
+ float: left;
+ right: unset;
+ left: var(--page-padding);
+}
+
+@media only screen and (max-width: 1080px) {
+ .nav-wide-wrapper { display: none; }
+ .nav-wrapper { display: block; }
+}
+
+/* sidebar-visible */
+@media only screen and (max-width: 1380px) {
+ #mdbook-sidebar-toggle-anchor:checked ~ .page-wrapper .nav-wide-wrapper { display: none; }
+ #mdbook-sidebar-toggle-anchor:checked ~ .page-wrapper .nav-wrapper { display: block; }
+}
+
+/* Inline code */
+
+:not(pre) > .hljs {
+ display: inline;
+ padding: 0.1em 0.3em;
+ border-radius: 3px;
+}
+
+:not(pre):not(a) > .hljs {
+ color: var(--inline-code-color);
+ overflow-x: initial;
+}
+
+a:hover > .hljs {
+ text-decoration: underline;
+}
+
+pre {
+ position: relative;
+}
+pre > .buttons {
+ position: absolute;
+ z-index: 100;
+ right: 0px;
+ top: 2px;
+ margin: 0px;
+ padding: 2px 0px;
+
+ color: var(--sidebar-fg);
+ cursor: pointer;
+ visibility: hidden;
+ opacity: 0;
+ transition: visibility 0.1s linear, opacity 0.1s linear;
+}
+pre:hover > .buttons {
+ visibility: visible;
+ opacity: 1
+}
+pre > .buttons :hover {
+ color: var(--sidebar-active);
+ border-color: var(--icons-hover);
+ background-color: var(--theme-hover);
+}
+pre > .buttons button {
+ cursor: inherit;
+ margin: 0px 5px;
+ padding: 2px 3px 0px 4px;
+ font-size: 23px;
+
+ border-style: solid;
+ border-width: 1px;
+ border-radius: 4px;
+ border-color: var(--icons);
+ background-color: var(--theme-popup-bg);
+ transition: 100ms;
+ transition-property: color,border-color,background-color;
+ color: var(--icons);
+}
+
+pre > .buttons button.clip-button {
+ padding: 2px 4px 0px 6px;
+}
+pre > .buttons button.clip-button::before {
+ /* clipboard image from octicons (https://github.com/primer/octicons/tree/v2.0.0) MIT license
+ */
+ content: url('data:image/svg+xml,<svg width="21" height="20" viewBox="0 0 24 25" \
+xmlns="http://www.w3.org/2000/svg" aria-label="Copy to clipboard">\
+<path d="M18 20h2v3c0 1-1 2-2 2H2c-.998 0-2-1-2-2V5c0-.911.755-1.667 1.667-1.667h5A3.323 3.323 0 \
+0110 0a3.323 3.323 0 013.333 3.333h5C19.245 3.333 20 4.09 20 5v8.333h-2V9H2v14h16v-3zM3 \
+7h14c0-.911-.793-1.667-1.75-1.667H13.5c-.957 0-1.75-.755-1.75-1.666C11.75 2.755 10.957 2 10 \
+2s-1.75.755-1.75 1.667c0 .911-.793 1.666-1.75 1.666H4.75C3.793 5.333 3 6.09 3 7z"/>\
+<path d="M4 19h6v2H4zM12 11H4v2h8zM4 17h4v-2H4zM15 15v-3l-4.5 4.5L15 21v-3l8.027-.032L23 15z"/>\
+</svg>');
+ filter: var(--copy-button-filter);
+}
+pre > .buttons button.clip-button:hover::before {
+ filter: var(--copy-button-filter-hover);
+}
+
+@media (pointer: coarse) {
+ pre > .buttons button {
+ /* On mobile, make it easier to tap buttons. */
+ padding: 0.3rem 1rem;
+ }
+
+ .sidebar-resize-indicator {
+ /* Hide resize indicator on devices with limited accuracy */
+ display: none;
+ }
+}
+pre > code {
+ display: block;
+ padding: 1rem;
+}
+
+/* FIXME: ACE editors overlap their buttons because ACE does absolute
+ positioning within the code block which breaks padding. The only solution I
+ can think of is to move the padding to the outer pre tag (or insert a div
+ wrapper), but that would require fixing a whole bunch of CSS rules.
+*/
+.hljs.ace_editor {
+ padding: 0rem 0rem;
+}
+
+pre > .result {
+ margin-block-start: 10px;
+}
+
+/* Search */
+
+#mdbook-searchresults a {
+ text-decoration: none;
+}
+
+mark {
+ border-radius: 2px;
+ padding-block-start: 0;
+ padding-block-end: 1px;
+ padding-inline-start: 3px;
+ padding-inline-end: 3px;
+ margin-block-start: 0;
+ margin-block-end: -1px;
+ margin-inline-start: -3px;
+ margin-inline-end: -3px;
+ background-color: var(--search-mark-bg);
+ transition: background-color 300ms linear;
+ cursor: pointer;
+}
+
+mark.fade-out {
+ background-color: rgba(0,0,0,0) !important;
+ cursor: auto;
+}
+
+.searchbar-outer {
+ margin-inline-start: auto;
+ margin-inline-end: auto;
+ max-width: var(--content-max-width);
+}
+
+#mdbook-searchbar-outer.searching #mdbook-searchbar {
+ padding-right: 30px;
+}
+#mdbook-searchbar-outer .spinner-wrapper {
+ display: none;
+}
+#mdbook-searchbar-outer.searching .spinner-wrapper {
+ display: block;
+}
+
+.search-wrapper {
+ position: relative;
+}
+
+.spinner-wrapper {
+ --spinner-margin: 2px;
+ position: absolute;
+ margin-block-start: calc(var(--searchbar-margin-block-start) + var(--spinner-margin));
+ right: var(--spinner-margin);
+ top: 0;
+ bottom: var(--spinner-margin);
+ padding: 6px;
+ background-color: var(--bg);
+}
+
+#fa-spin {
+ animation: rotating 2s linear infinite;
+ display: inline-block;
+}
+
+@keyframes rotating {
+ from {
+ transform: rotate(0deg);
+ }
+ to {
+ transform: rotate(360deg);
+ }
+}
+
+#mdbook-searchbar {
+ width: 100%;
+ margin-block-start: var(--searchbar-margin-block-start);
+ margin-block-end: 0;
+ margin-inline-start: auto;
+ margin-inline-end: auto;
+ padding: 10px 16px;
+ transition: box-shadow 300ms ease-in-out;
+ border: 1px solid var(--searchbar-border-color);
+ border-radius: 3px;
+ background-color: var(--searchbar-bg);
+ color: var(--searchbar-fg);
+}
+#mdbook-searchbar:focus,
+#mdbook-searchbar.active {
+ box-shadow: 0 0 3px var(--searchbar-shadow-color);
+}
+
+.searchresults-header {
+ font-weight: bold;
+ font-size: 1em;
+ padding-block-start: 18px;
+ padding-block-end: 0;
+ padding-inline-start: 5px;
+ padding-inline-end: 0;
+ color: var(--searchresults-header-fg);
+}
+
+.searchresults-outer {
+ margin-inline-start: auto;
+ margin-inline-end: auto;
+ max-width: var(--content-max-width);
+ border-block-end: 1px dashed var(--searchresults-border-color);
+}
+
+ul#mdbook-searchresults {
+ list-style: none;
+ padding-inline-start: 20px;
+}
+ul#mdbook-searchresults li {
+ margin: 10px 0px;
+ padding: 2px;
+ border-radius: 2px;
+}
+ul#mdbook-searchresults li.focus {
+ background-color: var(--searchresults-li-bg);
+}
+ul#mdbook-searchresults span.teaser {
+ display: block;
+ clear: both;
+ margin-block-start: 5px;
+ margin-block-end: 0;
+ margin-inline-start: 20px;
+ margin-inline-end: 0;
+ font-size: 0.8em;
+}
+ul#mdbook-searchresults span.teaser em {
+ font-weight: bold;
+ font-style: normal;
+}
+
+/* Sidebar */
+
+.sidebar {
+ position: fixed;
+ left: 0;
+ top: 0;
+ bottom: 0;
+ width: var(--sidebar-width);
+ font-size: 0.875em;
+ box-sizing: border-box;
+ -webkit-overflow-scrolling: touch;
+ overscroll-behavior-y: contain;
+ background-color: var(--sidebar-bg);
+ color: var(--sidebar-fg);
+}
+.sidebar-iframe-inner {
+ --padding: 10px;
+
+ background-color: var(--sidebar-bg);
+ padding: var(--padding);
+ margin: 0;
+ font-size: 1.4rem;
+ color: var(--sidebar-fg);
+ min-height: calc(100vh - var(--padding) * 2);
+}
+.sidebar-iframe-outer {
+ border: none;
+ height: 100%;
+ position: absolute;
+ top: 0;
+ bottom: 0;
+ left: 0;
+ right: 0;
+}
+[dir=rtl] .sidebar { left: unset; right: 0; }
+.sidebar-resizing {
+ -moz-user-select: none;
+ -webkit-user-select: none;
+ -ms-user-select: none;
+ user-select: none;
+}
+html:not(.sidebar-resizing) .sidebar {
+ transition: transform 0.3s; /* Animation: slide away */
+}
+.sidebar code {
+ line-height: 2em;
+}
+.sidebar .sidebar-scrollbox {
+ overflow-y: auto;
+ position: absolute;
+ top: 0;
+ bottom: 0;
+ left: 0;
+ right: 0;
+ padding: 10px 10px;
+}
+.sidebar .sidebar-resize-handle {
+ position: absolute;
+ cursor: col-resize;
+ width: 0;
+ right: calc(var(--sidebar-resize-indicator-width) * -1);
+ top: 0;
+ bottom: 0;
+ display: flex;
+ align-items: center;
+}
+
+.sidebar-resize-handle .sidebar-resize-indicator {
+ width: 100%;
+ height: 16px;
+ color: var(--icons);
+ margin-inline-start: var(--sidebar-resize-indicator-space);
+ display: flex;
+ align-items: center;
+ justify-content: flex-start;
+}
+.sidebar-resize-handle .sidebar-resize-indicator::before {
+ content: "";
+ width: 2px;
+ height: 12px;
+ border-left: dotted 2px currentColor;
+}
+.sidebar-resize-handle .sidebar-resize-indicator::after {
+ content: "";
+ width: 2px;
+ height: 16px;
+ border-left: dotted 2px currentColor;
+}
+
+[dir=rtl] .sidebar .sidebar-resize-handle {
+ left: calc(var(--sidebar-resize-indicator-width) * -1);
+ right: unset;
+}
+.js .sidebar .sidebar-resize-handle {
+ cursor: col-resize;
+ width: calc(var(--sidebar-resize-indicator-width) - var(--sidebar-resize-indicator-space));
+}
+
+html:not(.js) .sidebar-resize-handle {
+ display: none;
+}
+
+/* sidebar-hidden */
+#mdbook-sidebar-toggle-anchor:not(:checked) ~ .sidebar {
+ transform: translateX(calc(0px - var(--sidebar-width) - var(--sidebar-resize-indicator-width)));
+}
+[dir=rtl] #mdbook-sidebar-toggle-anchor:not(:checked) ~ .sidebar {
+ transform: translateX(calc(var(--sidebar-width) + var(--sidebar-resize-indicator-width)));
+}
+.sidebar::-webkit-scrollbar {
+ background: var(--sidebar-bg);
+}
+.sidebar::-webkit-scrollbar-thumb {
+ background: var(--scrollbar);
+}
+
+/* sidebar-visible */
+#mdbook-sidebar-toggle-anchor:checked ~ .page-wrapper {
+ transform: translateX(calc(var(--sidebar-width) + var(--sidebar-resize-indicator-width)));
+}
+[dir=rtl] #mdbook-sidebar-toggle-anchor:checked ~ .page-wrapper {
+ transform: translateX(calc(0px - var(--sidebar-width) - var(--sidebar-resize-indicator-width)));
+}
+@media only screen and (min-width: 620px) {
+ #mdbook-sidebar-toggle-anchor:checked ~ .page-wrapper {
+ transform: none;
+ margin-inline-start: calc(var(--sidebar-width) + var(--sidebar-resize-indicator-width));
+ }
+ [dir=rtl] #mdbook-sidebar-toggle-anchor:checked ~ .page-wrapper {
+ transform: none;
+ }
+}
+
+.chapter {
+ list-style: none outside none;
+ padding-inline-start: 0;
+ line-height: 2.2em;
+}
+
+.chapter li {
+ color: var(--sidebar-non-existant);
+}
+
+/* This is a span wrapping the chapter link and the fold chevron. */
+.chapter-link-wrapper {
+ /* Used to position the chevron to the right, allowing the text to wrap before it. */
+ display: flex;
+}
+
+.chapter li a {
+ /* Remove underlines. */
+ text-decoration: none;
+ color: var(--sidebar-fg);
+}
+
+.chapter li a:hover {
+ color: var(--sidebar-active);
+}
+
+.chapter li a.active {
+ color: var(--sidebar-active);
+}
+
+/* This is the toggle chevron. */
+.chapter-fold-toggle {
+ cursor: pointer;
+ /* Positions the chevron to the side. */
+ margin-inline-start: auto;
+ padding: 0 10px;
+ user-select: none;
+ opacity: 0.68;
+}
+
+.chapter-fold-toggle div {
+ transition: transform 0.5s;
+}
+
+/* collapse the section */
+.chapter li:not(.expanded) > ol {
+ display: none;
+}
+
+.chapter li.chapter-item {
+ line-height: 1.5em;
+ margin-block-start: 0.6em;
+}
+
+/* When expanded, rotate the chevron to point down. */
+.chapter li.expanded > span > .chapter-fold-toggle div {
+ transform: rotate(90deg);
+}
+
+.chapter a.current-header {
+ color: var(--sidebar-active);
+}
+
+.on-this-page {
+ margin-left: 22px;
+ border-inline-start: 4px solid var(--sidebar-header-border-color);
+ padding-left: 8px;
+}
+
+.on-this-page > ol {
+ padding-left: 0;
+}
+
+/* Horizontal line in chapter list. */
+.spacer {
+ width: 100%;
+ height: 3px;
+ margin: 5px 0px;
+}
+.chapter .spacer {
+ background-color: var(--sidebar-spacer);
+}
+
+/* On touch devices, add more vertical spacing to make it easier to tap links. */
+@media (-moz-touch-enabled: 1), (pointer: coarse) {
+ .chapter li a { padding: 5px 0; }
+ .spacer { margin: 10px 0; }
+}
+
+.section {
+ list-style: none outside none;
+ padding-inline-start: 20px;
+ line-height: 1.9em;
+}
+
+/* Theme Menu Popup */
+
+.theme-popup {
+ position: absolute;
+ left: 10px;
+ top: var(--menu-bar-height);
+ z-index: 1000;
+ border-radius: 4px;
+ font-size: 0.7em;
+ color: var(--fg);
+ background: var(--theme-popup-bg);
+ border: 1px solid var(--theme-popup-border);
+ margin: 0;
+ padding: 0;
+ list-style: none;
+ display: none;
+ /* Don't let the children's background extend past the rounded corners. */
+ overflow: hidden;
+}
+[dir=rtl] .theme-popup { left: unset; right: 10px; }
+.theme-popup .default {
+ color: var(--icons);
+}
+.theme-popup .theme {
+ width: 100%;
+ border: 0;
+ margin: 0;
+ padding: 2px 20px;
+ line-height: 25px;
+ white-space: nowrap;
+ text-align: start;
+ cursor: pointer;
+ color: inherit;
+ background: inherit;
+ font-size: inherit;
+}
+.theme-popup .theme:hover {
+ background-color: var(--theme-hover);
+}
+
+.theme-selected::before {
+ display: inline-block;
+ content: "✓";
+ margin-inline-start: -14px;
+ width: 14px;
+}
+
+/* The container for the help popup that covers the whole window. */
+#mdbook-help-container {
+ /* Position and size for the whole window. */
+ position: fixed;
+ top: 0;
+ left: 0;
+ right: 0;
+ bottom: 0;
+ /* This uses flex layout (which is set in book.js), and centers the popup
+ in the window.*/
+ display: none;
+ align-items: center;
+ justify-content: center;
+ z-index: 1000;
+ /* Dim out the book while the popup is visible. */
+ background: var(--overlay-bg);
+}
+
+/* The popup help box. */
+#mdbook-help-popup {
+ box-shadow: 0 4px 24px rgba(0,0,0,0.15);
+ min-width: 300px;
+ max-width: 500px;
+ width: 100%;
+ box-sizing: border-box;
+ display: flex;
+ flex-direction: column;
+ align-items: center;
+ background-color: var(--bg);
+ color: var(--fg);
+ border-width: 1px;
+ border-color: var(--theme-popup-border);
+ border-style: solid;
+ border-radius: 8px;
+ padding: 10px;
+}
+
+.mdbook-help-title {
+ text-align: center;
+ /* mdbook's margin for h2 is way too large. */
+ margin: 10px;
+}