:root {
    --white: rgb(250, 250, 250);
    --light-gray: rgb(219, 219, 219);
    --gray: rgb(66, 66, 66);
    --black: rgb(20, 20, 20);
    --dark-background: rgb(50, 50, 50);

    --border-radius: 5px;
}

html {
    padding: 0;
    font-size: 16px;
    background: var(--white);
    color: var(--black);
    font-family: 'Open Sans', Arial, sans-serif;
    max-width: 1200px;
    margin: 0 auto;
}

.dark-mode nav{
    border-color: var(--white);
}

nav {
    margin-top: 50px;
    min-width: 30%;
    border-radius: var(--border-radius);
    display: inline-block;
    padding: 20px 30px;
    /* background-color: var(--light-gray); */
    border: 1px solid var(--black);
}

nav > h3 {
    margin: 0;
}

nav > ol a {
    font-weight: bold;
}

html.dark-mode {
    background: var(--dark-background);
    color: #ccc;
}

.dark-mode h1,
.dark-mode h2,
.dark-mode h3,
.dark-mode h4,
.dark-mode h5,
.dark-mode h6 {
    color: white;
}

a {
    color: #569cd6;
    font-weight: bold;
}

.dark-mode a:hover {
    color: white;
}

.dark-mode button {
    border: 1px solid rgb(211, 211, 211);
    color: rgb(211, 211, 211);
    background: linear-gradient(to top, rgb(53, 53, 53), rgb(73, 73, 73));
}

button {
    background-color: var(--white);
    border: 1px solid var(--gray);
    color: var(--gray);
    padding: 10px 20px;
    border-radius: 5px;
    transition: transform 0.2s;
}

label {
    display: flex;
    align-items: center;
    user-select: none;
    cursor: pointer;
}

input[type='checkbox'] {
    display: none;
}
input[type='checkbox'] + .checkbox {
    position: relative;
    margin-right: 10px;
    width: 32px;
    height: 32px;
}

.controls {
    display: flex;
}

.controls > * {
    margin-right: 1em;
}

.dark-mode .checkbox {
    background-color: var(--gray);
    border: 1px solid var(--white);
}

.checkbox {
    display: inline-block;
    border-radius: 3px;
    background-color: var(--white);
    border: 1px solid var(--black);
}

.checkbox:after {
    content: '';
    position: absolute;
}

input[type='checkbox']:checked + .checkbox {
    background-color: rgb(174, 238, 78);
}

input[type='checkbox']:checked + .checkbox:after {
    left: 11px;
    top: 6px;
    width: 5px;
    height: 12px;
    border: solid var(--white);
    border-width: 0 4px 4px 0;
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
}

button:active {
    transform: scale(0.98);
}

button:hover {
    filter: brightness(0.95);
}

button:focus {
    box-shadow: 0 0 3px 1px #569cd6;
    outline: none;
}

a {
    text-decoration: none;
}

.title {
    position: relative;
    font-size: 2.5rem;
}

.description {
    font-style: italic;
    margin-bottom: 3rem;
}

.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.doctest {
    margin: 0;
    padding-top: 50px;
    padding-bottom: 50px;
    box-shadow: inset 1px 1px 3px rgba(0, 0, 0, 0.5);
}
.collapsed .doctest {
    height: 0;
    margin: 0;
    padding: 0;
}

.doctest-wrapper {
    overflow: hidden;
    border-radius: 5px;

    margin-top: 1em;
    margin-bottom: 1em;
}

.doctest-titlebar {
    display: flex;
    align-items: center;
    color: whitesmoke;
    background-color: #111;
    padding: 10px;
}

.doctest-section-title {
    margin: 0;
    margin-left: 40px;

    padding: 0;
    font-size: 1.3em;
}

.grayBorder {
    border: 1px solid lightgray;
}

.insetPadding {
    padding: 16px;
}

.interactive {
    /*** For regions observed by InteraktionDelegates and -Mappers ***/
    -ms-content-zooming: none;
    touch-action: none;
}

.unselectable {
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

body {
    padding: 16px;
}

canvas {
    -ms-content-zooming: none; /** Crucial for MS Edge pointer events **/
    touch-action: none; /** Crucial for MS Edge? **/
}

#runtime-errors {
    left: -8px;
    margin-left: 8px;
}

.intrinsic-container {
    position: relative;
    height: 0;
    overflow: hidden;
}

/* 16x9 Aspect Ratio */
.intrinsic-container-16x9 {
    padding-bottom: 56.25%;
}

/* 4x3 Aspect Ratio */
.intrinsic-container-4x3 {
    padding-bottom: 75%;
}

.intrinsic-container iframe {
    position: absolute;
    border: 0;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}