:root {
    --main-bg-color: rgb(38, 39, 41);
    --nav-bar-color: rgb(41, 42, 47);
    --shadow-color: rgba(0, 0, 0, .5);

    --generic-green: #4CAF50;
    --generic-blue: #008CBA;
    --generic-red: #f44336;
    --generic-gray: #cccccc;
    --generic-black: #555555;

    font-family: 'Trebuchet MS', sans-serif;
}

* {
    -border: black solid thin;
}

.displayer {
    display: none;
}

.description {
    display: none;
    color: #f4f4f4;
    padding: 1em;
    margin: 1em auto;
    max-width: 50%;
}

.description h1,
.description h2 {
    color: #f4f4f4;
    margin-bottom: 0.5em;
}

.description p {
    margin-bottom: 1em;
}

#exhibition-cards {
    display: flex;
}

.row {
    flex-direction: row;
    flex-wrap: wrap;
    width: 100%;
}

.column {
    display: flex;
    flex-direction: column;
    flex-basis: 100%;
    flex: 1;
}

.grid-box {
    align-items: center;
    text-align: center;
    background-color: var(--generic-gray);
    margin: 0.1rem;
    padding: 0.1rem;
    line-height: 0;
    border-radius: 0.2rem;
    z-index: 10;
    transition: 0.5s;
    user-select: none;
}

.card {
    margin: 1rem;
    background-color: seashell;
    box-shadow: 0 0.25rem 0.5rem 0 var(--shadow-color);
    transition: 0.5s;
    width: 20%;
}

.card:hover {
    box-shadow: 0 0.5rem 1rem 0 var(--shadow-color);
    cursor: pointer;
}

.card-description {
    text-align: center;
    padding: 1rem;
    font-size: 1rem;
}

body {
    margin: 0%;
    height: 100%;
    background: var(--main-bg-color);
}

canvas {
    background: var(--main-bg-color);
    position: relative;
    display: none;
    z-index: 9;
}

p {
    letter-spacing: 0.025em;
    line-height: 1.625;
}

#graph-algo-viz-tutorial {
    border: none;
    border-radius: 1rem;
    background-color: seashell;
    box-shadow: 0.1rem 0.1rem 0.3rem 0.01rem var(--shadow-color);
    padding: 1.6rem;
    width: 60%;
    max-width: 900px;
    margin: auto;
    overflow: auto;
    color: #333;
}

#graph-algo-viz-tutorial>* {
    margin: 0.3rem;
}

#graph-algo-viz-tutorial > section {
    margin: 3rem 0;
    display: flex;
}

#graph-algo-viz-tutorial image {
    vertical-align: middle;
}

#graph-algo-viz-tutorial p {
    display: inline-block;
}

#graph-algo-viz-tutorial button {
    background-color: var(--generic-green);
    border: none;
    border-radius: 0.5rem;
    color: white;
    padding: 1rem 2rem;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 1rem;
    box-shadow: 0.1rem 0.1rem 0.3rem 0.01rem var(--shadow-color);
    transition: 200ms;
    float: right;
}

#graph-algo-viz-tutorial button:hover {
    cursor: pointer;
    box-shadow: 0.2rem 0.2rem 0.3rem 0.02rem var(--shadow-color);
}

.legend {
    display: flex;
    align-items: center;
}

.legend p {
    margin: 1rem;
}

.navbar {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--nav-bar-color);
    overflow: hidden;
    list-style-type: none;
    width: 100%;
    margin: 0;
    padding: 0;
    box-shadow: 0.1rem 0.1rem 0.3rem 0.01rem var(--shadow-color);
    z-index: 10;
}

.navbar li {
    display: inline-block;
    text-align: center;
    padding: 0;
    margin: 0;
}

.navbar button, select {
    border: none;
    margin: 0.8rem;
    padding: 0.5rem;
    font-size: 1rem;
    color: rgb(215, 223, 248);
    background-color: var(--nav-bar-color);
    transition: 400ms;
    transition-timing-function: ease-out;
    border-radius: 0.4rem;
}

.navbar button:hover {
    background-color: rgb(131, 131, 131);
    cursor: pointer;
    color: white;
}

#graph-algo-control-panel {
    display: none;
}

#graph-algo-menu option {
    background-color: var(--nav-bar-color);
}

#exhibition-cards {
    position: relative;
    height: 70%;
    margin-top: 2rem;
    align-items: center;
    justify-content: center;
}

#footer {
    bottom: 0%;
}

#connections {
    overflow: hidden;
    position: fixed;
    width: 100%;
    bottom: 0%;
    justify-content: center;
    text-align: center;
    margin: 2rem;

}

#connections a {
    margin: 1rem;
    text-decoration: none;
    font-size: 1.5rem;
    color: azure;
    transition: 300ms;
}

#connections a:hover { 
    text-shadow: 0 0 0.4rem var(--generic-blue); 
}

#grid-board {
    background-color: black;
    border-radius: 0.2rem;
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
    z-index: 9;

    --cols: 25;
    --rows: 25;
    display: grid;
    grid-template-columns: repeat(var(--cols), 1fr);
    grid-template-rows: repeat(var(--rows), 1fr);
}

#start-icon,
#destination-icon {
    display: none;
    width: 24px;
    height: 24px;
}

#start-icon,
#destination-icon:hover {
    cursor: pointer;
}

#pathfinding-in-progress-banner {
    text-align: center;
    display: none;
    position: relative;
    color: rgb(215, 223, 248);
    background-color: var(--nav-bar-color);
    width: 100%;
    margin: 0%;
    padding: 1.2rem;
    font-size: 1rem;
    box-shadow: 0.1rem 0.1rem 0.3rem 0.01rem var(--shadow-color);
    z-index: 10;
}