:root {
    --bkg-color: #000000;
    --border-color: 92, 56, 191;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
    
body {
    display: flex;
    flex-direction: column;
}

#canvas {
    border: 2px solid rgba(var(--border-color), 1);
    box-shadow: inset 0 0 30px rgba(var(--border-color), 1);
    background-color: var(--bkg-color);
}

.start-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 0.5rem;
    box-shadow: 0 0 50px rgba(var(--border-color), 1);
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(var(--border-color), 0.75);
    width: 40%;
    height: 40%;
    min-width: 200px;
    min-height: 200px;
}

.start-container > p {
    margin: 1rem;
    text-align: center;
    font-size: 1.25rem;
    font-weight: 600;
}

#start-btn, #ok-btn {
    padding: 1rem;
    width: fit-content;
    border-radius: 0.5rem;
    cursor: pointer;
    background-color: rgba(var(--border-color), 1);
    border: 1px solid var(--bkg-color);
    box-shadow: 0 0 30px var(--bkg-color);
    font-size: 1.5rem;
    font-weight: 600;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}

#start-btn:hover, #ok-btn:hover {
    box-shadow: inset 0 0 30px var(--bkg-color);
}