@font-face {
    font-family: 'Open Sans';
    font-style: normal;
    font-weight: 400;
    src: url('../fonts/open-sans-v17-latin-regular.eot'); /* IE9 Compat Modes */
    src: local('Open Sans Regular'), local('OpenSans-Regular'),
        url('../fonts/open-sans-v17-latin-regular.eot?#iefix') format('embedded-opentype'), /* IE6-IE8 */
        url('../fonts/open-sans-v17-latin-regular.woff2') format('woff2'), /* Super Modern Browsers */
        url('../fonts/open-sans-v17-latin-regular.woff') format('woff'), /* Modern Browsers */
        url('../fonts/open-sans-v17-latin-regular.ttf') format('truetype'), /* Safari, Android, iOS */
        url('../fonts/open-sans-v17-latin-regular.svg#OpenSans') format('svg'); /* Legacy iOS */
}

html, body {
    font-family: 'Open Sans', sans-serif;
    font-size: 14px;
    line-height: 22px;
}

@media (max-width: 767px) {
    html, body {
        /*padding: 0 10px;*/
    }
}
* {box-sizing: border-box;}

.notransition {
  -webkit-transition: none !important;
  -moz-transition: none !important;
  -o-transition: none !important;
  transition: none !important;
}

body {
   /* light theme */
  --text-color: #222222;
  --text-color-a: #006ab1;
  --text-color-code: #000;
  --text-color-code-a: #e96d00;
  --text-color-pre-code: #1e1e1e;
  --text-color-bold: #222222;
  --text-color-title: #222222;
  --bkg-color: #ffffff;
  --bkg-color-pre: #f5f6f8;
  --border-color-header-ul: #2a7fff;
  --text-color-footer: #cdcdcd;
  --border-color: #e3e3e3;
  --text-color-control: #000;
  --bkg-color-control: #fff;
  --toggle-color: #2a7fff;
  --bkg-color-topbar: #ffffff80;
    
  --code-color: #37474f;
  --code-comments-color: #8c8c8c;
  --code-constant-color: #880000;
  --code-keywords-color: #0b47d7;
  --code-numbers-color: #c5221f;
  --code-strings-color: #188038;
  --code-types-color: #8d2cf3;
  --code-preprocessor-color: #599b34;
  --code-preprocessor-background: #e9f2e3;
}
body.dark-theme {
  --text-color: #a5b3ca;
  --text-color-a: #73cbff;
  --text-color-code: #fff;
  --text-color-code-a: #e8ce99;
  --text-color-pre-code: #e6e7ea;
  --text-color-bold: #e5e7ec;
  --text-color-title: #e5e7ec;
  --bkg-color: #0f1c2a;
  --bkg-color-pre: #252f40;
  --border-color-header-ul: #2a7fff;
  --text-color-footer: #404346;
  --border-color: #2d3442;
  --text-color-control: #fff;
  --bkg-color-control: #444e60;
  --toggle-color: #fb0;
  --bkg-color-topbar: #0f1c2a80;
    
  --code-color: #fff;
  --code-comments-color: #b6bbbd;
  --code-constant-color: #d95638;
  --code-keywords-color: #78d1ec;
  --code-numbers-color: #f2605e;
  --code-strings-color: #a2d568;
  --code-types-color: #f8a8ff;
  --code-preprocessor-color: #68d959; 
  --code-preprocessor-background: #252f40;
}
.dark-theme mark { background: #7f0080; color: #fff;}


body {
    background: var(--bkg-color);
}

h1, h2, h3, h4, h5,
p {
    color: var(--text-color);
}

h1, h2, h3 {
    font-weight: lighter;
    /*! font-size: 1.6em; */
    color: var(--text-color-title);
}
h2 {font-size: 1.75rem;}
h3 {font-size: 1.5rem;}

img {
    max-width: 100%;
}

ul {
    padding-left: 1.5rem;
}

li::marker {
  color: var(--text-color);
}

li {
  color: var(--text-color);
}

code {
    color: var(--text-color-code);
    background: var(--bkg-color-pre);
    padding: 1px 5px;
    border-radius: 3px;
}
a code {
    color: var(--text-color-code-a);
}

pre {
    background-color: var(--bkg-color-pre);
    color: var(--text-color);
    border-radius: 2px;
    padding: 20px 20px;
    white-space: pre-wrap;
}

pre code {
    color: var(--text-color-pre-code);
    padding: 0;
    background: transparent;
}

a {
    color: var(--text-color-a);
    text-decoration: none;
}

h1 a, h2 a, h3 a {
    color: var(--text-color-title);
}

h1 code a, h2 code a, h3 code a {
    color: var(--text-color-code);
}

a[href]:hover {
    text-decoration: underline;
}

strong {
    color: var(--text-color-bold);
}

hr {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin: 2rem 0;
}

table {
    border-spacing: 0;
    text-align: left;
    width: 100%;
    color: var(--text-color);
    font-size: 0.9em;
}

td {
    border-top-color: var(--text-color);
    border-top: 1px solid;
    border-color: var(--border-color);
    padding:5px;
}

th {
    border-bottom: 1px solid;
    border-bottom-color: var(--text-color);
    padding:5px;
}

header {
    grid-area: header;
    text-align: right;
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 5;
    padding: 10px 20px;
    max-width: 100vw;
}
@media (min-width:768px) {
    header{ padding: 10px 20px; }
    footer { padding: 10px 0px; }
}

header h1 {
    font-size: 14pt;
    margin: 0;
    float: left;
}
header h1 a  {
    display: flex;
    align-items:center;
    gap:20px;
}

header input {
    margin-left: auto
}

header ul {
    border-color: var(--border-color-header-ul);
    border-style: none;
    list-style-position: inside;
    padding: 0;
    margin: 0;
    max-height: calc(100vh - 70px);
    overflow-Y: auto;
    background: var(--bkg-color);
    border-radius: 5px;
    position:absolute;
    right:10px;
    max-width: 910px;
    width: 95%;
    box-shadow: 0px 5px 10px rgba(0,0,0,0.25);
}

header ul:not(:empty) {
    border-style: solid;
}

header input {
    margin: 20px 0 0 0;
}



.header-bg {
    position: fixed;
    top: 0;
    height: 68px;
    background: var(--bkg-color-topbar);
    width: 100%;
    z-index: 4;
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
}


.search-box {
    border: 1px solid var(--border-color);
    display: inline-block;
    margin-top:10px;
    background: var(--bkg-color-control);
    display: inline-flex;
    color: var(--text-color-control);
    border-radius: 2px;
}
.search-box > input {
    border:0; margin:0; padding-left:6px;
    background: var(--bkg-color-control);
    color: var(--text-color-control);
}
.search-box .toggle-icon {color: var(--text-color-control);}

footer {
    color: var(--text-color-footer);
    text-align: right;
    grid-area: footer;
}

footer a {
    color: var(--text-color-footer);
}

footer p {
    color: var(--text-color-footer);
}

/* sidebar */
nav {
    grid-area: nav;
    padding-top: 20px;
    padding: 5px 0 20px 26px;
    font-size:0.9em;
    line-height: 1.4;
}
@media (min-width:768px) {
     nav {
        position: -webkit-sticky;
        position: sticky;
        top: 68px;
        overflow-y: auto;
        min-width: 300px;
        max-height: calc(100vh - 68px);
        border-right: 1px solid var(--border-color);
        /*! background: rgba(0, 136, 255, 0.03); */
        max-width: 320px;
    }   
}

nav ul {
    padding: 0;
    padding-left: 0;
    list-style: none;
    margin:0;
}
nav > ul {
    margin: 7px 0;
    margin-left: 0;
}


nav > ul > li > a,
nav > ul > li > span > a{
    font-weight: 600;
    cursor: pointer;
    font-size: 13px;   
}

nav > ul > li > a {
    display:inline-block;
    padding: 5px 0;
}

nav > ul > li { 
    margin: 0px 0;
}
nav ul li {
    padding: 0px 0;
}
nav ul li a {
    color: var(--text-color);
}
nav ul li span {
    display: block;
    padding: 5px 5px 5px 15px;
    margin-left:-15px 
}
nav ul li.active > span{
    
    color: #42c5f9;
    border-right: 3px solid;
    background:  rgba(66, 197, 249, 0.09);
}

nav ul li ul li {
    padding-left: 15px;
}

nav code {
    color: var(--text-color-a);
}

nav .expand > span { 
    display: block; 
    position: relative;
    
}
.expand > span:after {
    content: "";
    position: absolute;
    left: 3px;
    top:12px;
    border: solid var(--text-color-control);
    border-width: 0 1px 1px 0;
    display: inline-block;
    padding: 2px;
    vertical-align:middle;
    transform: rotate(-45deg);
    -webkit-transform: rotate(-45deg);
}
.expand.expand-on > span:after {
    top:11px;
    transform: rotate(45deg);
    -webkit-transform: rotate(45deg);
}

.expand-off > ul { display: none; }
.expand-on > ul { display: block; }


/* table of content */
aside {
    /*! grid-area: aside; */
    /*! padding-top: 20px; */
    padding: 0 10px 0 10px;
    font-size:0.85em;
    line-height: 1.4;
}
aside ul {
    padding-left: 20px;
    list-style: none;
    /*! margin: 0 0 0 15px; */
    padding: 0;
}
aside > ul {
    margin-left: 0px; 
}

@media (min-width:768px) {
    aside {
        position: -webkit-sticky;
        position: sticky;
        top: 68px;
        overflow-y: auto;
        min-width: 270px;
        height: calc(100vh - 68px);
        width: 310px;
    }
    aside > ul > li >ul {
        border-left: 1px solid var(--border-color);
        
    }
}

aside > ul > li >ul {
    margin-top: 5px;
}

aside > ul > li > a{
    font-weight: 600;       
}

aside ul li {
    padding: 5px 0;   
}
aside ul li a {
    color: var(--text-color);
}
aside ul li.active {
    color: #42c5f9;
    border-left: 3px solid;
    padding-left: 12px;
    background:  rgba(66, 197, 249, 0.09);

}

aside ul li ul li {
    padding-left: 15px;
}

aside code {
    color: var(--text-color-a);
}





article {
    min-height: calc(100dvh - 68px);
}
@media (min-width:768px) {
    article {
        padding-left: 30px;
        padding-right: 20px;
    }   
}

article > section {
    margin: 0 auto;
    display: block;
}
article h2, article h3 {
    /*margin-top:1.75em;*/
    position: relative;
    
}
article h2:hover:before,
article h3:hover:before {
    position:absolute;
    left: -16px;
    content: "#";
    color: var(--text-color-code);
    font-size: 0.8em;
        
}

.container {
    display: grid;
    grid-template-areas:
        "header"
        "content"
        "footer";
    max-width: 1748px;
    margin: auto;
}

@media (min-width: 1169px) {
    .container {
        grid-template-areas:
            "header header"
            "nav content"
            "nav footer";
        grid-template-columns: 1fr 4fr;
        grid-template-rows: min-content 0fr;
    }
}

.content {
    display: grid;
    grid-area: content;
    min-width: 0; 
    /*! justify-content: space-around; */
    grid-template-areas: "article nav";
    grid-template-columns: 3fr 1fr;
    grid-template-rows: min-content 0fr;
}

.search-match {
    padding: 4px;
    text-align: left;
    list-style: none;
    border-bottom: 1px solid var(--border-color)
}

.search-nomatch {
    list-style: none;
    padding: 4px;
}

/* toggle */
.toggle-icon {
    display: inline-flex;
    vertical-align: middle;
    height: 24px;
    width: 24px;
    margin: 2px;
    cursor: pointer;
    text-align: center;
    color: var(--text-color);
    align-items: center;
    user-select: none;
}
.toggle-icon input{
  position: absolute;
  opacity: 0;
  height: 0;
  width: 0;
}
.toggle-icon input:checked ~ * {
    color: var(--toggle-color);
}

/* search results */
header li {
    min-width:100%;
    display: grid;
    grid-template-columns: max-content 1fr;
    width: fit-content;  
}
.labels {
    padding: 0 5px;
    height: 1.5em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: right
}
.labels .label {
    display: inline-block;
    margin:1px;
    font-size:0.8em;
    padding: 0 4px;
    font-style: italic;
}
.labels .label-count {
    display: inline;
    padding: 0 4px; margin-left:4px;
    background: var(--bkg-color-pre);
    color: var(--text-color);
    font-style: normal;
    border-radius: 4px;
    font-size:0.8em;
}


/* Notification boxes */
.block-info {
  border-left: 4px solid #a47bff;
  background: rgba(140, 66, 249, 0.15);
  padding: 1rem 1.25rem;
}
.block-info > strong:first-child:before{
    content: "\1d456";
    font-size: 16px;
    line-height: 18px;
    margin-right:6px;
    display:inline-block;
    text-align: center;
    width: 18px; height:18px;
    background:#a47bff;
    color: var(--bkg-color);
    border-radius: 20px;
}
.block-info > strong:first-child {
    color: #a47bff;
}

.block-warning {
  border-left: 4px solid #f2b134;
  background: rgba(249, 212, 66, 0.15);
  padding: 1rem 1.25rem;
} 
.block-warning > strong:first-child:before{
    content: "!";
    font-size: 1.0em;
    font-weight:bold;
    line-height: 17px;
    margin-right:6px;
    display:inline-block;
    text-align: center;
    width: 18px; height:18px;
    background:#f2b134;
    color: var(--bkg-color);
    border-radius: 20px;
}
.block-warning > strong:first-child {
    color: #f2b134;
}

.block-tip {
  border-left: 4px solid #3eb04b;
  background: rgba(62, 176, 75, 0.15);
  padding: 1rem 1.25rem;
} 
.block-tip > strong:first-child:before{
    color: #3eb04b;
    content: "?";
    font-size: 1.0em;
    line-height: 18px;
    margin-right:6px;
    display:inline-block;
    text-align: center;
    width: 18px; height:18px;
    background:#3eb04b;
    color: var(--bkg-color);
    border-radius: 20px;
}
.block-tip > strong:first-child {
    color: #3eb04b;
}
.block-info > strong:first-child,
.block-warning > strong:first-child,
.block-tip > strong:first-child {
    margin-right: 6px;
    display:block;
    margin-bottom: 4px;
}

/* edit this page link */
.edit-link {
  display: inline-flex;
  margin-top: 2.5em;
  gap:10px;
}

/* code highlighting */
article {min-width:0; width:100%; max-width: 960px;margin: 0 auto;} /* trick to avoid code blocks expanding main area */
pre > code.sourceCode { white-space: pre; position: relative; }
pre > code.sourceCode > span { display: inline-block; line-height: 1.25; }
pre > code.sourceCode > span:empty { height: 1.2em; }
.sourceCode { overflow: visible; background: var(--bkg-color-pre);}
code.sourceCode > span { color: var(--code-color); text-decoration: inherit; }
div.sourceCode { margin: 1em 0; }
pre.sourceCode { margin: 0; }
@media screen {
div.sourceCode { overflow: auto;}
}
@media print {
pre > code.sourceCode { white-space: pre-wrap; }
pre > code.sourceCode > span { text-indent: -5em; padding-left: 5em; }
}
pre.numberSource code
  { counter-reset: source-line 0; }
pre.numberSource code > span
  { position: relative; left: -4em; counter-increment: source-line; }
pre.numberSource code > span > a:first-child::before
  { content: counter(source-line);
    position: relative; left: -1em; text-align: right; vertical-align: baseline;
    border: none; display: inline-block;
    -webkit-touch-callout: none; -webkit-user-select: none;
    -khtml-user-select: none; -moz-user-select: none;
    -ms-user-select: none; user-select: none;
    padding: 0 4px; width: 4em;
    color: #aaaaaa;
  }
pre.numberSource { margin-left: 3em; border-left: 1px solid #aaaaaa;  padding-left: 4px; }
div.sourceCode {  }
@media screen {
pre > code.sourceCode > span > a:first-child::before { text-decoration: underline; }
}

code span.at { color: var(--code-color); } /* Attribute */
code span.bn { color: var(--code-numbers-color); } /* BaseN */
code span.bu { color: var(--code-types-color); } /* BuiltIn */
code span.cf { color: var(--code-keywords-color); } /* ControlFlow */
code span.cn { color: var(--code-constant-color); } /* Constant */
code span.co { color: var(--code-comments-color); } /* Comment */
code span.cv { color: var(--code-comments-color); font-weight: bold; font-style: italic; } /* CommentVar */
code span.do { color: var(--code-comments-color); font-style: italic; } /* Documentation */
code span.dt { color: var(--code-keywords-color); } /* DataType */
code span.dv { color: var(--code-numbers-color); } /* DecVal */
code span.fl { color: var(--code-numbers-color); } /* Float */
code span.fu { color: var(--code-color); } /* Function */
code span.kw { color: var(--code-keywords-color);  } /* Keyword */
code span.op { color: var(--code-color); } /* Operator */

code span.pp { color: var(--code-preprocessor-color); background-color: var(--code-preprocessor-background);} /* Preprocessor */
code span.sc { color: var(--code-strings-color); } /* SpecialChar */
code span.ss { color: var(--code-strings-color); } /* SpecialString */
code span.ch { color: var(--code-strings-color); } /* Char */
code span.st { color: var(--code-strings-color); } /* String */
code span.vs { color: var(--code-strings-color); } /* VerbatimString */

code span.im { color: var(--code-color); } /* Import */
code span.va { color: var(--code-color); } /* Variable */
code span.ot { color: var(--code-color); } /* Other */

code span.al { color: #ff0000; font-weight: bold; } /* Alert */
code span.an { color: #60a0b0; font-weight: bold; font-style: italic; } /* Annotation */
code span.in { color: #60a0b0; font-style: italic; } /* Information */
code span.wa { color: #60a0b0; font-weight: bold; font-style: italic; } /* Warning */
code span.er { color: #ff0000; font-weight: bold; } /* Error */
code span.ex { } /* Extension */

/* anchor alignment trick */
article :target:before {
    content: "";
    display: block;
    height: 68px;
    margin: -68px 0 0;
}

/* version selector */
.version-selector {
    background: transparent;
    border: 0;
    background: var(--bkg-color-control);
    color: var(--text-color-control);
    padding: 5px;
}
nav .version-selector {
    float: right;
    margin-right: 10px;
    display:none;
}
@media (max-width:460px) {
    .version-selector { display:none}
    nav .version-selector { display:block}
}

/* mobile layout */
.mobile-menu {
    border: 1px solid var(--border-color);
    background: var(--bkg-color-control);
    display: inline-block;
    color: var(--text-color-control);
    border-radius: 2px;
    display: inline-flex;
    vertical-align: middle;
    height: 30px;
    width: 30px;
    margin: 2px;
    margin-top: 0px;
    cursor: pointer;
    text-align: center;
    align-items: center;
    user-select: none;
    padding: 6px;
}
.mobile-menu:hover {
    border: 1px solid var(--toggle-color);
}

@media (max-width:1168px) {

    nav { display:none; }
    .is-opened-mobile nav { 
        display:block;
        position:fixed;
        top:0;
        left:0;
        bottom:0;
        max-height: 100dvh;
        background: var(--bkg-color-control);
        z-index: 6;
        padding-top: 20px;
        padding-left: 30px;
        box-shadow: 2px 0 15px rgba(0,0,0,0.25);
        overflow-y: auto;
        min-width: 300px;
        max-width: 87dvw;
    }
    .header-bg {}
    header h1 { width: 40px; overflow:hidden; }
    article h2, article h3 { line-height: 1.2; word-break: break-word;}
}
@media (max-width:768px) {
    .content {display:flex; flex-direction: column-reverse; }
    aside {
        display:block;
        position:static; 
        border: 1px solid var(--border-color); 
        margin:10px 10px 0 10px;
        max-height: 28dvh;
        overflow-y: auto;
    }
    .search-box { max-width: 50%}
    .search-box input { width: 100%;}
    article { padding: 15px; }
    header { padding: 10px;}
    
    h2 {font-size: 1.5rem;}
    h3 {font-size: 1.3rem;}
}

@media (min-width:1169px) {
    .mobile-menu { display:none; }
    nav { display:block; }
}