/* Globals */

:root {
    --sidebar-width: 300px;
    --page-padding: 15px;
    --content-max-width: 750px;
    --menu-bar-height: 50px;
}

/* Themes */

.ayu {
    --bg: hsl(210, 25%, 8%);
    --fg: #c5c5c5;

    --sidebar-bg: #14191f;
    --sidebar-fg: #c8c9db;
    --sidebar-non-existant: #5c6773;
    --sidebar-active: #ffb454;
    --sidebar-spacer: #2d334f;

    --scrollbar: var(--sidebar-fg);

    --icons: #737480;
    --icons-hover: #b7b9cc;

    --links: #0096cf;

    --inline-code-color: #ffb454;

    --theme-popup-bg: #14191f;
    --theme-popup-border: #5c6773;
    --theme-hover: #191f26;

    --quote-bg: hsl(226, 15%, 17%);
    --quote-border: hsl(226, 15%, 22%);

    --table-border-color: hsl(210, 25%, 13%);
    --table-header-bg: hsl(210, 25%, 28%);
    --table-alternate-bg: hsl(210, 25%, 11%);

    --searchbar-border-color: #848484;
    --searchbar-bg: #424242;
    --searchbar-fg: #fff;
    --searchbar-shadow-color: #d4c89f;
    --searchresults-header-fg: #666;
    --searchresults-border-color: #888;
    --searchresults-li-bg: #252932;
    --search-mark-bg: #e3b171;
}

.coal {
    --bg: hsl(200, 7%, 8%);
    --fg: #98a3ad;

    --sidebar-bg: #292c2f;
    --sidebar-fg: #a1adb8;
    --sidebar-non-existant: #505254;
    --sidebar-active: #3473ad;
    --sidebar-spacer: #393939;

    --scrollbar: var(--sidebar-fg);

    --icons: #43484d;
    --icons-hover: #b3c0cc;

    --links: #2b79a2;

    --inline-code-color: #c5c8c6;;

    --theme-popup-bg: #141617;
    --theme-popup-border: #43484d;
    --theme-hover: #1f2124;

    --quote-bg: hsl(234, 21%, 18%);
    --quote-border: hsl(234, 21%, 23%);

    --table-border-color: hsl(200, 7%, 13%);
    --table-header-bg: hsl(200, 7%, 28%);
    --table-alternate-bg: hsl(200, 7%, 11%);

    --searchbar-border-color: #aaa;
    --searchbar-bg: #b7b7b7;
    --searchbar-fg: #000;
    --searchbar-shadow-color: #aaa;
    --searchresults-header-fg: #666;
    --searchresults-border-color: #98a3ad;
    --searchresults-li-bg: #2b2b2f;
    --search-mark-bg: #355c7d;
}

.light {
    --bg: hsl(0, 0%, 100%);
    --fg: hsl(0, 0%, 0%);

    --sidebar-bg: #fafafa;
    --sidebar-fg: hsl(0, 0%, 0%);
    --sidebar-non-existant: #aaaaaa;
    --sidebar-active: #1f1fff;
    --sidebar-spacer: #f4f4f4;

    --scrollbar: #8F8F8F;

    --icons: #747474;
    --icons-hover: #000000;

    --links: #20609f;

    --inline-code-color: #301900;

    --theme-popup-bg: #fafafa;
    --theme-popup-border: #cccccc;
    --theme-hover: #e6e6e6;

    --quote-bg: hsl(197, 37%, 96%);
    --quote-border: hsl(197, 37%, 91%);

    --table-border-color: hsl(0, 0%, 95%);
    --table-header-bg: hsl(0, 0%, 80%);
    --table-alternate-bg: hsl(0, 0%, 97%);

    --searchbar-border-color: #aaa;
    --searchbar-bg: #fafafa;
    --searchbar-fg: #000;
    --searchbar-shadow-color: #aaa;
    --searchresults-header-fg: #666;
    --searchresults-border-color: #888;
    --searchresults-li-bg: #e4f2fe;
    --search-mark-bg: #a2cff5;
}

.navy {
    --bg: hsl(226, 23%, 11%);
    --fg: #bcbdd0;

    --sidebar-bg: #282d3f;
    --sidebar-fg: #c8c9db;
    --sidebar-non-existant: #505274;
    --sidebar-active: #2b79a2;
    --sidebar-spacer: #2d334f;

    --scrollbar: var(--sidebar-fg);

    --icons: #737480;
    --icons-hover: #b7b9cc;

    --links: #2b79a2;

    --inline-code-color: #c5c8c6;;

    --theme-popup-bg: #161923;
    --theme-popup-border: #737480;
    --theme-hover: #282e40;

    --quote-bg: hsl(226, 15%, 17%);
    --quote-border: hsl(226, 15%, 22%);

    --table-border-color: hsl(226, 23%, 16%);
    --table-header-bg: hsl(226, 23%, 31%);
    --table-alternate-bg: hsl(226, 23%, 14%);

    --searchbar-border-color: #aaa;
    --searchbar-bg: #aeaec6;
    --searchbar-fg: #000;
    --searchbar-shadow-color: #aaa;
    --searchresults-header-fg: #5f5f71;
    --searchresults-border-color: #5c5c68;
    --searchresults-li-bg: #242430;
    --search-mark-bg: #a2cff5;
}

.rust {
    --bg: hsl(60, 9%, 87%);
    --fg: #262625;

    --sidebar-bg: #3b2e2a;
    --sidebar-fg: #c8c9db;
    --sidebar-non-existant: #505254;
    --sidebar-active: #e69f67;
    --sidebar-spacer: #45373a;

    --scrollbar: var(--sidebar-fg);

    --icons: #737480;
    --icons-hover: #262625;

    --links: #2b79a2;

    --inline-code-color: #6e6b5e;

    --theme-popup-bg: #e1e1db;
    --theme-popup-border: #b38f6b;
    --theme-hover: #99908a;

    --quote-bg: hsl(60, 5%, 75%);
    --quote-border: hsl(60, 5%, 70%);

    --table-border-color: hsl(60, 9%, 82%);
    --table-header-bg: #b3a497;
    --table-alternate-bg: hsl(60, 9%, 84%);

    --searchbar-border-color: #aaa;
    --searchbar-bg: #fafafa;
    --searchbar-fg: #000;
    --searchbar-shadow-color: #aaa;
    --searchresults-header-fg: #666;
    --searchresults-border-color: #888;
    --searchresults-li-bg: #dec2a2;
    --search-mark-bg: #e69f67;
}

@media (prefers-color-scheme: dark) {
    .light.no-js {
        --bg: hsl(200, 7%, 8%);
        --fg: #98a3ad;

        --sidebar-bg: #292c2f;
        --sidebar-fg: #a1adb8;
        --sidebar-non-existant: #505254;
        --sidebar-active: #3473ad;
        --sidebar-spacer: #393939;

        --scrollbar: var(--sidebar-fg);

        --icons: #43484d;
        --icons-hover: #b3c0cc;

        --links: #2b79a2;

        --inline-code-color: #c5c8c6;;

        --theme-popup-bg: #141617;
        --theme-popup-border: #43484d;
        --theme-hover: #1f2124;

        --quote-bg: hsl(234, 21%, 18%);
        --quote-border: hsl(234, 21%, 23%);

        --table-border-color: hsl(200, 7%, 13%);
        --table-header-bg: hsl(200, 7%, 28%);
        --table-alternate-bg: hsl(200, 7%, 11%);

        --searchbar-border-color: #aaa;
        --searchbar-bg: #b7b7b7;
        --searchbar-fg: #000;
        --searchbar-shadow-color: #aaa;
        --searchresults-header-fg: #666;
        --searchresults-border-color: #98a3ad;
        --searchresults-li-bg: #2b2b2f;
        --search-mark-bg: #355c7d;
    }
}

/* Base styles and content styles */

@import 'variables.css';

:root {
    /* Browser default font-size is 16px, this way 1 rem = 10px */
    font-size: 62.5%;
}

html {
    font-family: "Open Sans", sans-serif;
    color: var(--fg);
    background-color: var(--bg);
    text-size-adjust: none;
}

body {
    margin: 0;
    font-size: 1.6rem;
    overflow-x: hidden;
}

code {
    font-family: "Source Code Pro", Consolas, "Ubuntu Mono", Menlo, "DejaVu Sans Mono", monospace, monospace !important;
    font-size: 0.875em; /* please adjust the ace font size accordingly in editor.js */
}

/* Don't change font size in headers. */
h1 code, h2 code, h3 code, h4 code, h5 code, h6 code {
    font-size: unset;
}

.left { float: left; }
.right { float: right; }
.boring { opacity: 0.6; }
.hide-boring .boring { display: none; }
.hidden { display: none !important; }

h2, h3 { margin-top: 2.5em; }
h4, h5 { margin-top: 2em; }

.header + .header h3,
.header + .header h4,
.header + .header h5 {
    margin-top: 1em;
}

h1:target::before,
h2:target::before,
h3:target::before,
h4:target::before,
h5:target::before,
h6:target::before {
    display: inline-block;
    content: "»";
    margin-left: -30px;
    width: 30px;
}

/* This is broken on Safari as of version 14, but is fixed
   in Safari Technology Preview 117 which I think will be Safari 14.2.
   https://bugs.webkit.org/show_bug.cgi?id=218076
*/
:target {
    scroll-margin-top: calc(var(--menu-bar-height) + 0.5em);
}

.page {
    outline: 0;
    padding: 0 var(--page-padding);
    margin-top: calc(0px - var(--menu-bar-height)); /* Compensate for the #menu-bar-hover-placeholder */
}
.page-wrapper {
    box-sizing: border-box;
}
.js:not(.sidebar-resizing) .page-wrapper {
    transition: margin-left 0.3s ease, transform 0.3s ease; /* Animation: slide away */
}

.content {
    overflow-y: auto;
    padding: 0 15px;
    padding-bottom: 50px;
}
.content main {
    margin-left: auto;
    margin-right: auto;
    max-width: var(--content-max-width);
}
.content p { line-height: 1.45em; }
.content ol { line-height: 1.45em; }
.content ul { line-height: 1.45em; }
.content a { text-decoration: none; }
.content a:hover { text-decoration: underline; }
.content img { max-width: 100%; }
.content .header:link,
.content .header:visited {
    color: var(--fg);
}
.content .header:link,
.content .header:visited:hover {
    text-decoration: none;
}

table {
    margin: 0 auto;
    border-collapse: collapse;
}
table td {
    padding: 3px 20px;
    border: 1px var(--table-border-color) solid;
}
table thead {
    background: var(--table-header-bg);
}
table thead td {
    font-weight: 700;
    border: none;
}
table thead th {
    padding: 3px 20px;
}
table thead tr {
    border: 1px var(--table-header-bg) solid;
}
/* Alternate background colors for rows */
table tbody tr:nth-child(2n) {
    background: var(--table-alternate-bg);
}


blockquote {
    margin: 20px 0;
    padding: 0 20px;
    color: var(--fg);
    background-color: var(--quote-bg);
    border-top: .1em solid var(--quote-border);
    border-bottom: .1em solid var(--quote-border);
}


:not(.footnote-definition) + .footnote-definition,
.footnote-definition + :not(.footnote-definition) {
    margin-top: 2em;
}
.footnote-definition {
    font-size: 0.9em;
    margin: 0.5em 0;
}
.footnote-definition p {
    display: inline;
}

.tooltiptext {
    position: absolute;
    visibility: hidden;
    color: #fff;
    background-color: #333;
    transform: translateX(-50%); /* Center by moving tooltip 50% of its width left */
    left: -8px; /* Half of the width of the icon */
    top: -35px;
    font-size: 0.8em;
    text-align: center;
    border-radius: 6px;
    padding: 5px 8px;
    margin: 5px;
    z-index: 1000;
}
.tooltipped .tooltiptext {
    visibility: visible;
}

.chapter li.part-title {
    color: var(--sidebar-fg);
    margin: 5px 0px;
    font-weight: bold;
}

/* CSS for UI elements (a.k.a. chrome) */

@import 'variables.css';

::-webkit-scrollbar {
    background: var(--bg);
}
::-webkit-scrollbar-thumb {
    background: var(--scrollbar);
}
html {
    scrollbar-color: var(--scrollbar) var(--bg);
}
#searchresults a,
.content a:link,
a:visited,
a > .hljs {
    color: var(--links);
}

/* Menu Bar */

#menu-bar,
#menu-bar-hover-placeholder {
    z-index: 101;
    margin: auto calc(0px - var(--page-padding));
}
#menu-bar {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    background-color: var(--bg);
    border-bottom-color: var(--bg);
    border-bottom-width: 1px;
    border-bottom-style: solid;
}
#menu-bar.sticky,
.js #menu-bar-hover-placeholder:hover + #menu-bar,
.js #menu-bar:hover,
.js.sidebar-visible #menu-bar {
    position: -webkit-sticky;
    position: sticky;
    top: 0 !important;
}
#menu-bar-hover-placeholder {
    position: sticky;
    position: -webkit-sticky;
    top: 0;
    height: var(--menu-bar-height);
}
#menu-bar.bordered {
    border-bottom-color: var(--table-border-color);
}
#menu-bar i, #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) {
    #menu-bar i, #menu-bar .icon-button {
        padding: 0 5px;
    }
}

.icon-button {
    border: none;
    background: none;
    padding: 0;
    color: inherit;
}
.icon-button i {
    margin: 0;
}

.right-buttons {
    margin: 0 15px;
}
.right-buttons a {
    text-decoration: none;
}

.left-buttons {
    display: flex;
    margin: 0 5px;
}
.no-js .left-buttons {
    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;
}
.js .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 i {
    color: var(--icons);
}

.menu-bar i:hover,
.menu-bar .icon-button:hover,
.nav-chapters:hover,
.mobile-nav-chapters i: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-top: 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);
}

.previous {
    float: left;
}

.next {
    float: right;
    right: var(--page-padding);
}

@media only screen and (max-width: 1080px) {
    .nav-wide-wrapper { display: none; }
    .nav-wrapper { display: block; }
}

@media only screen and (max-width: 1380px) {
    .sidebar-visible .nav-wide-wrapper { display: none; }
    .sidebar-visible .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: 5px;
    top: 5px;

    color: var(--sidebar-fg);
    cursor: pointer;
}
pre > .buttons :hover {
    color: var(--sidebar-active);
}
pre > .buttons i {
    margin-left: 8px;
}
pre > .buttons button {
    color: inherit;
    background: transparent;
    border: none;
    cursor: inherit;
}
pre > .result {
    margin-top: 10px;
}

/* Search */

#searchresults a {
    text-decoration: none;
}

mark {
    border-radius: 2px;
    padding: 0 3px 1px 3px;
    margin: 0 -3px -1px -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-left: auto;
    margin-right: auto;
    max-width: var(--content-max-width);
}

#searchbar {
    width: 100%;
    margin: 5px auto 0px 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);
}
#searchbar:focus,
#searchbar.active {
    box-shadow: 0 0 3px var(--searchbar-shadow-color);
}

.searchresults-header {
    font-weight: bold;
    font-size: 1em;
    padding: 18px 0 0 5px;
    color: var(--searchresults-header-fg);
}

.searchresults-outer {
    margin-left: auto;
    margin-right: auto;
    max-width: var(--content-max-width);
    border-bottom: 1px dashed var(--searchresults-border-color);
}

ul#searchresults {
    list-style: none;
    padding-left: 20px;
}
ul#searchresults li {
    margin: 10px 0px;
    padding: 2px;
    border-radius: 2px;
}
ul#searchresults li.focus {
    background-color: var(--searchresults-li-bg);
}
ul#searchresults span.teaser {
    display: block;
    clear: both;
    margin: 5px 0 0 20px;
    font-size: 0.8em;
}
ul#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-resizing {
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
.js: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: 0;
    top: 0;
    bottom: 0;
}
.js .sidebar .sidebar-resize-handle {
    cursor: col-resize;
    width: 5px;
}
.sidebar-hidden .sidebar {
    transform: translateX(calc(0px - var(--sidebar-width)));
}
.sidebar::-webkit-scrollbar {
    background: var(--sidebar-bg);
}
.sidebar::-webkit-scrollbar-thumb {
    background: var(--scrollbar);
}

.sidebar-visible .page-wrapper {
    transform: translateX(var(--sidebar-width));
}
@media only screen and (min-width: 620px) {
    .sidebar-visible .page-wrapper {
        transform: none;
        margin-left: var(--sidebar-width);
    }
}

.chapter {
    list-style: none outside none;
    padding-left: 0;
    line-height: 2.2em;
}

.chapter ol {
    width: 100%;
}

.chapter li {
    display: flex;
    color: var(--sidebar-non-existant);
}
.chapter li a {
    display: block;
    padding: 0;
    text-decoration: none;
    color: var(--sidebar-fg);
}

.chapter li a:hover {
    color: var(--sidebar-active);
}

.chapter li a.active {
    color: var(--sidebar-active);
}

.chapter li > a.toggle {
    cursor: pointer;
    display: block;
    margin-left: auto;
    padding: 0 10px;
    user-select: none;
    opacity: 0.68;
}

.chapter li > a.toggle div {
    transition: transform 0.5s;
}

/* collapse the section */
.chapter li:not(.expanded) + li > ol {
    display: none;
}

.chapter li.chapter-item {
    line-height: 1.5em;
    margin-top: 0.6em;
}

.chapter li.expanded > a.toggle div {
    transform: rotate(90deg);
}

.spacer {
    width: 100%;
    height: 3px;
    margin: 5px 0px;
}
.chapter .spacer {
    background-color: var(--sidebar-spacer);
}

@media (-moz-touch-enabled: 1), (pointer: coarse) {
    .chapter li a { padding: 5px 0; }
    .spacer { margin: 10px 0; }
}

.section {
    list-style: none outside none;
    padding-left: 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;
}
.theme-popup .default {
    color: var(--icons);
}
.theme-popup .theme {
    width: 100%;
    border: 0;
    margin: 0;
    padding: 2px 10px;
    line-height: 25px;
    white-space: nowrap;
    text-align: left;
    cursor: pointer;
    color: inherit;
    background: inherit;
    font-size: inherit;
}
.theme-popup .theme:hover {
    background-color: var(--theme-hover);
}
.theme-popup .theme:hover:first-child,
.theme-popup .theme:hover:last-child {
    border-top-left-radius: inherit;
    border-top-right-radius: inherit;
}