:root {
    --font-text: 'Roboto', sans-serif;
    --font-heading: 'Work Sans', sans-serif;
    --font-code: 'Source Code Pro', monospace;

    --main-bg-color: coral;

    --color-link: #336699;
    --color-text: #556;

    --color-heading-text: #445;
    --color-heading-background: #e9ebed;

    --color-nav-text: #eee;
    --color-nav-background: #0A215C;
    --color-nav-active: #284578;

    --color-anchor-default: #DDD;
    --color-anchor-hover: #666;

    --color-code-text: #445;
    --color-code-background: #f5f9fc;

    --color-blockquote-background: #fffaf3;
    --color-blockquote-highlight: rgba(0, 0, 0, 0.1);

    --margin-default: 15px;
}

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
    display: block;
}
ol, ul {
    margin-bottom: var(--margin-default);
    list-style: disc;
    margin-left: 1.5em;
}
blockquote, q {
    quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
    content: '';
    content: none;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
}

body {
    font-family: var(--font-text);
    font-size: 15px;
    line-height: 1.55em;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

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

img {
    max-width: 100%;
}

a:hover {
    text-decoration: underline;
}

@media (min-width: 768px) {
    body {
        display: grid;
        grid-template:
            'logo header'
            'nav content'
            'nav footer';
        grid-template-columns: 200px 1fr;
        grid-template-rows: min-content auto min-content;
    }
}

main {
    flex: 1;
    padding: 0 20px 20px;
    color: var(--color-text);
}

.content {
    position: relative;
    grid-area: content;
    max-width: 920px;
    margin: auto;
}

main .content {
    margin-top: 40px;
}

header {
    grid-area: header;
    background: var(--color-heading-background);
    padding: 45px 20px;
    overflow: hidden;
}

footer {
    padding: 2px;
    text-align: center;
    font-size: 0.7em;
    color: var(--color-heading-text);
}

h1,h2,h3,h4,h5,h6 {
    font-family: var(--font-heading);
    color: #445;
}

h1 {
    font-size: 25px;
    font-weight: 700;
    margin: 15px 0 10px 0;
    position: relative;
}

.description {
    font-family: 'Work Sans', sans-serif;
    font-size: 18px;
    color: var(--color-text);
}

.header-link {
    position: absolute;
    top: 0;
    right: 0;
}

h2 {
    margin-top: 2em;
    margin-bottom: var(--margin-default);
    font-size: 19px;
    font-weight: 700;
}

h3 {
    margin-top: 1.5em;
    margin-bottom: var(--margin-default);
    font-size: 16px;
    font-weight: 500;
}

p {
    margin-bottom: var(--margin-default);
}

nav {
    grid-area: nav;
    color: var(--color-nav-text);
    background-color: var(--color-nav-background);
    font-family: var(--font-heading);
    font-weight: 500;
}

.menu {

}

.menu a {
    color: inherit;
}

.menu a:hover {
    text-decoration: none;
}

.menu-item {
    display: block;
    padding: 5px 10px;
}

.submenu .menu-item {
    padding: 5px 20px;
}

.submenu-heading {
    margin-top: 15px;
}

ul.menu {
    margin-left:0;
    list-style: none;
}

ul.submenu {
    margin-left: 0;
    list-style: none;
    margin-bottom: 0;
}

ul.submenu span {
    padding: 5px 10px;
}

ul.menu li.active,
ul.menu a:hover {
    background-color: var(--color-nav-active);
}

.layout--logo {
    grid-area: logo;
    background-color: var(--color-nav-background);
}

.logo {
    grid-area: logo;
    color: #eee;
    margin: 15px;
    text-align: center;
    display: block;
}

.logo svg {
    fill: currentColor;
    max-width: 30px;
}

.logo--name {
    vertical-align: top;
    height: 100%;
    font-size: 30px;
}

.logo:hover {
    text-decoration: none;
}

code {
    font-family: var(--font-code);
    font-weight: 500;
    color: var(--color-code-text);
    background-color: var(--color-code-background);
    border-radius: 3px;
    display: inline-block;
    padding: 0px 5px;
    font-size: 13px;
    line-height: 1.5;
}

pre > code {
    overflow: auto;
    display: block;
    padding: 5px 10px;
    margin-bottom: var(--margin-default);
}

strong {
    font-weight: 700;
}

em {
    font-style: italic;
}

.anchor-link {
    display: inline-block;
}

.anchor-link:hover {
    text-decoration: none;
}

.anchor-icon {
    fill: var(--color-anchor-default);
    display: inline-block;
    vertical-align: middle;
    padding: 0 5px;
    width: 14px;
}

.anchor-icon:hover {
    fill: var(--color-anchor-hover);
}

@media (min-width: 768px) {
    .logo {
        margin: 20px 50px;

    }
    .logo svg {
        max-width: none;
        margin: 5px;
    }
    nav input {
        display: none;
    }
}

/* pure css hamburger, adapted from https://codepen.io/erikterwan/pen/EVzeRP */

@media (max-width: 767px) {
    .layout--logo {
        z-index: 2;
    }

    nav {
        -webkit-user-select: none;
        user-select: none;

    }

    .hamburger {
        position: absolute;
        top: 0px;
        left: 0px;
        margin: 15px;
        z-index: 3;
    }

    nav input {
        display: block;
        width: 70px;
        height: 70px;
        position: absolute;
        top: -7px;
        left: -5px;

        cursor: pointer;

        opacity: 0; /* hide this */
        z-index: 4; /* and place it over the hamburger */

        -webkit-touch-callout: none;
    }

    .hamburger span {
        display: block;
        width: 28px;
        height: 4px;
        margin: 5px;
        position: relative;
        background: currentColor;
        border-radius: 3px;
        z-index: 1;
        transform-origin: 0 1.5px;

        transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0),
        background 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0),
        opacity 0.55s ease;
    }

    nav input:checked ~ .hamburger span {
        opacity: 1;
        transform: rotate(45deg) translate(-2px, -1px);
    }

    nav input:checked ~ .hamburger span:nth-last-child(2) {
        opacity: 0;
        transform: rotate(0deg) scale(0.2, 0.2);
    }

    nav input:checked ~ .hamburger span:nth-last-child(1) {
        transform: rotate(-45deg) translate(0, -1px);
    }

    .menu {
        z-index: 1;
        position: absolute;
        width: 300px;
        height: 100%;
        margin: -100px 0 0 -50px;
        padding: 150px 0;

        color: var(--color-heading-text);
        background-color: var(--color-heading-background);
        font-family: var(--font-heading);

        list-style-type: none;
        -webkit-font-smoothing: antialiased;
        /* to stop flickering of text in safari */

        transform-origin: 0% 0%;
        transform: translate(-100%, 0);

        transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0);
    }

    ul.menu li.active,
    ul.menu a:hover {
        background-color: #d3d5d7;
    }

    nav input:checked ~ ul {
        transform: none;
    }

}


blockquote {
    background-color: var(--color-blockquote-background);
    border-left-color: var(--color-blockquote-highlight);
    border-left-width: 9px;
    border-left-style: solid;
    padding: 1em 20px 1em 11px;
    margin-bottom: var(--margin-default);
    margin-left: -20px;
    margin-right: -20px;
}

blockquote p {
    margin-bottom: 0;
}

/* Blockquote headings. */
blockquote p:first-of-type {
    font-weight: bold;
}

blockquote code {
    background-color: var(--color-blockquote-highlight);
}

table {
    width: 100%;
}

td, th {
    padding: 0.2em 1em;
}

tr {
    border-bottom: 1px solid var(--color-heading-background);
}

tr td:first-child, th {
    font-weight: bold;
}

.version-switcher {
    position: absolute;
    top: 18px;
    right: 16px;
    display: inline-block;
    width: 80px;
    z-index: 3;
    color: white;
}


.version-switcher-options {
    display: none;
    /*opacity: 40%;*/
    color: var(--color-text);
    position: absolute;
    top: 0;
    right: 0;
    background-color: #f9f9f9;
    width: 80px;
    box-shadow: 0px 3px 7px 0px rgba(0,0,0,0.2);
    z-index: 2;
}

@media (min-width: 768px) {
    .version-switcher {
        color: var(--color-text);
    }
}

.version-switcher-options a, .version-switcher span {
    list-style-type: none;
    padding: 3px 10px;
    display: block;
    cursor: pointer;
    font-family: var(--font-code);
}

.version-switcher-options a {
    color: var(--color-text);
}

.version-switcher-options a:hover {
    background: #bbb;
    text-decoration: none;
}

.version-switcher-options a:first-child {
    background: #ccc;
}

.version-switcher:hover .version-switcher-options {
    display: block;
}

.alert-warning {
    background-color: rgba(255, 85, 35, 0.84);
    padding: 10px;
    color: white;
    font-weight: bolder;
}

.alert-warning a {
    color: #ff6;
}

.icon {
    display: inline-block;
    line-height: .75em;
    width: 1em;
}

.icon svg {
    display: block;
}

.icon svg path {
    fill: currentColor;
}

ul.submenu span.icon {
    padding: 0;
}
