body {
    /* https://coolors.co/f06449-ede6e3-7d82b8-36382e-613f75  */
    --background-color: #ede6e3;
    --wall-color: #36382e;
    --joystick-color: #210124;
    --joystick-head-color: #f06449;
    --ball-color: #f06449;
    --end-color: #7d82b8;
    --text-color: #210124;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
}

html,
body {
    height: 100%;
    margin: 0;
}

#center {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

#game {
    display: grid;
    grid-template-columns: auto 150px;
    grid-template-rows: 1fr auto 1fr;
    gap: 30px;
    perspective: 600px;
}

#maze {
    position: relative;
    grid-row: 1 / -1;
    grid-column: 1;
    width: 350px;
    height: 315px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#end {
    width: 65px;
    height: 65px;
    border: 3px dotted var(--end-color);
    border-radius: 50%;
}

#joystick {
    position: relative;
    background-color: var(--joystick-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 10px 50px;
    grid-row: 2;
}

#joystick-head {
    position: relative;
    background-color: var(--joystick-head-color);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    cursor: grab;
    animation-name: glow;
    animation-duration: 0.6s;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    animation-timing-function: ease-in-out;
    animation-delay: 4s;
}

@keyframes glow {
    0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.2);
    }
}

.joystick-arrow:nth-of-type(1) {
    position: absolute;
    bottom: 55px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 10px solid var(--joystick-color);
}

.joystick-arrow:nth-of-type(2) {
    position: absolute;
    top: 55px;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid var(--joystick-color);
}

.joystick-arrow:nth-of-type(3) {
    position: absolute;
    left: 55px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 10px solid var(--joystick-color);
}

.joystick-arrow:nth-of-type(4) {
    position: absolute;
    right: 55px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-right: 10px solid var(--joystick-color);
}

#note {
    grid-row: 3;
    grid-column: 2;
    text-align: center;
    font-size: 0.8em;
    color: var(--text-color);
    transition: opacity 2s;
}

a:visited {
    color: inherit;
}

.ball {
    position: absolute;
    margin-top: -5px;
    margin-left: -5px;
    border-radius: 50%;
    background-color: var(--ball-color);
    width: 10px;
    height: 10px;
}

.wall {
    position: absolute;
    background-color: var(--wall-color);
    transform-origin: top center;
    margin-left: -5px;
}

.wall::before,
.wall::after {
    display: block;
    content: "";
    width: 10px;
    height: 10px;
    background-color: inherit;
    border-radius: 50%;
    position: absolute;
}

.wall::before {
    top: -5px;
}

.wall::after {
    bottom: -5px;
}

.black-hole {
    position: absolute;
    margin-top: -9px;
    margin-left: -9px;
    border-radius: 50%;
    background-color: black;
    width: 18px;
    height: 18px;
}

#youtube,
#youtube-card {
    display: none;
}

@media (min-height: 425px) {
    /** Youtube logo by https://codepen.io/alvaromontoro */
    #youtube {
        z-index: 2;
        display: block;
        width: 100px;
        height: 70px;
        position: absolute;
        bottom: 20px;
        right: 20px;
        background: red;
        border-radius: 50% / 11%;
        transform: scale(0.8);
        transition: transform 0.5s;
    }
    #youtube:hover,
    #youtube:focus {
        transform: scale(0.9);
    }
    #youtube::before {
        content: "";
        display: block;
        position: absolute;
        top: 7.5%;
        left: -6%;
        width: 112%;
        height: 85%;
        background: red;
        border-radius: 9% / 50%;
    }
    #youtube::after {
        content: "";
        display: block;
        position: absolute;
        top: 20px;
        left: 40px;
        width: 45px;
        height: 30px;
        border: 15px solid transparent;
        box-sizing: border-box;
        border-left: 30px solid white;
    }
    #youtube span {
        font-size: 0;
        position: absolute;
        width: 0;
        height: 0;
        overflow: hidden;
    }
    #youtube:hover+#youtube-card {
        display: block;
        position: absolute;
        bottom: 12px;
        right: 10px;
        padding: 25px 130px 25px 25px;
        width: 300px;
        background-color: white;
    }
}