:root {
    --fontSize: max(15px, 1vw);
}
body, html, h1, h2, h3, h4, h5 {
    all: unset;
}
body {
    background-color: #eeeeee;
    font-family: Arial, Helvetica, sans-serif;
    font-size: var(--fontSize);
}
main, footer {
    display: flex;
    flex-flow: column nowrap;
    background-color: white;
    margin: auto;
    width: 95%;
    max-width: 85vh;
    position: relative;
}
.introduction img {
    width: 60%;
}
.introduction sup {
    font-variant: small-caps;
    font-size: 0.95em;
}
h1 {
    font-size: 1.6em;
    font-variant: small-caps;
    text-shadow: 0.1em 0.1em 0.1em #9f9f9f;
}
h5 {
    font-size: 0.85em;
    opacity: 0.65;
    margin: 1em auto 0.75em;
}
.chapter, .introduction {
    display: flex;
    flex-flow: column nowrap;
    align-items: center;
    margin: 1em auto 2em;
    width: 100%;
    text-align: center;
}
.text {
    text-align: center;
    margin: 0 5%;
}
.text ol {
    font-size: 0.8em;
    opacity: 0.65;
    width: 80%;
    text-align: justify;
    margin: 0;
}
h4 {
    font-variant: small-caps;
    text-align: center;
    margin: 0.4em auto auto;
    opacity: 0.65;
}
h2 {
    font-size: 1.2em;
    padding: 0.5em;
    font-variant: small-caps;
}
h3 {
    font-size: 0.9em;
    opacity: 0.65;
}
.canvas-container {
    width: 90%;
    max-width: 60vh;
    position: relative;
    background-size: 0 0;
}
.canvas-container canvas {
    width: 100%;
}
.overlay {
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    z-index: 2;
    opacity: 0;
}
.loadedImg {
    display: none;
}
.clickable {
    opacity: 0.5;
}
.clickable:hover {
    opacity: 1;
    cursor: pointer;
}
.clicked:hover {
    opacity: 0.8;
    cursor: pointer;
}

#underlay {
    z-index: -10;
    opacity: 0.1;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    width: 100vw;
    transition: background-color 0.75s ease-in-out;
}

#recursive-division .canvas-container {
    color: #f088dc;
    background-image: url("assets/king.png");
}
#simple-prims .canvas-container {
    color: #3ba9fd;
    background-image: url("assets/cat.png");
}
#simple-backtracker .canvas-container {
    color: #d7a029;
    background-image: url("assets/pear.png");
}
#octagon .canvas-container {
    color: #23928b;
    background-image: url("assets/lab_demon.png");
}
#Aldous-Broder .canvas-container {
    color: #23923d;
    background-image: url("assets/cactus.png");
}
#random-tunneler .canvas-container {
    color: #dd2a2af1;
    background-image: url("assets/brain.png");
}
#fake-polar .canvas-container {
    color: #0044ff;
    background-image: url("assets/robot.png");
}
#real-polar .canvas-container {
    color: #ea7c06;
    background-image: url("assets/thinker.png");
}
#tri-maze .canvas-container {
    color: #b300ff;
    background-image: url("assets/woman.png");
}

/* footer */
footer {
    font-size: calc(var(--fontSize)*0.8);
    padding-top: 5em;
}
footer p {
    font-size: 0.8em;
    text-align: center;
    font-family: Georgia sans-serif;
}
#returnbutton {
    display: flex;
    margin: auto;
    align-items: center;
    opacity: 0.8;
    font-size: var(--gap);
}
#returnbutton h4 {
    text-align: left;
    margin: 0;
    font-variant: small-caps;
    margin-left: 0.3em;
    font-weight: bold;
}
#return {
    background-image: url("https://www.planetegem.be/images/returngrey.svg");
    width: 6em;
    height: 3em;
    background-repeat:no-repeat;
    background-size:contain;
}
#returnbutton:hover {
    color: #7D1E2D;
    border-color: #7D1E2D20;
    cursor: pointer;
}
#returnbutton:hover #return {
    background-image: url("https://www.planetegem.be/images/return.svg");
}