body {
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    text-align: center;
    background-color: #29323c;
}

#game {
    padding: 0;
    margin: 0;
    width: 60vh;
    height: 80vh;
    border-style: solid;
    border-width: 2px;
    font-size: 40px;
}

#game .screen {
    width: 100%;
    height: 100%;
    display: none;
    color: #CECEF6;
    background-color: black;
}

#game .screen.active {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

ul.menu {
    text-align: center;
    padding: 0;
    margin: 0;
    list-style: none;
}

ul.menu li {
    margin: 0.8em 0;
}

button {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    width: 10em;
    height: 3em;
    background: linear-gradient(to bottom, #485563, #29323c);
    border-radius: 0.5em;
    box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.25);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

ul.menu li button:hover {
    background: linear-gradient(to bottom, #29323c, #485563);
    box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.25);
    transform: translateY(-2px);
}

#game div h1 {
    font-size: 1em;
    text-align: center;
}

#high-scores ol {
    text-align: center;
    padding: 0;
    margin: 0;
    list-style: none;
}

#game div p {
    font-size: 0.5em;
}

.canvas {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

.logo {
    height: 10vh;
}

a {
    border: 1px solid #999;
    padding: 4px 8px;
    display: inline-block;
    text-decoration: none;
    color: #fff;
    background: linear-gradient(to bottom, #485563, #29323c);
    border-radius: 4px;
    font-weight: bold;
    text-transform: uppercase;
    transition: background-color 0.2s ease;
}
  
a:hover {
    background: linear-gradient(to bottom, #29323c, #485563);
    box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.25);
    transform: translateY(-2px);
}

input {
    border: 1px solid #999;
    padding: 8px;
    border-radius: 4px;
    font-size: 16px;
    outline: none;
}
  
input:focus {
    box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.25);
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 28px;
}
  
.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
  
.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    -webkit-transition: .4s;
    transition: .4s;
}
  
.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    -webkit-transition: .4s;
    transition: .4s;
}
  
input:checked + .slider {
    background-color: #29323c;
}
  
input:focus + .slider {
    box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.25);
}
  
input:checked + .slider:before {
    -webkit-transform: translateX(26px);
    -ms-transform: translateX(26px);
    transform: translateX(26px);
}
  
.slider.round {
    border-radius: 34px;
}
  
.slider.round:before {
    border-radius: 50%;
}

#mobile-controls {
    display: flex;
    flex-direction: row;
    align-items: center;
    height: 10vh;
    width: 100vw;
    visibility: hidden;
}

#mobile-controls button {
    margin: 0 0 0 18vw;
    width: 12vw;
    height: 12vw;
    background: #ff0b00;
    border-radius: 50%;
    border: 2px solid black;
}

#mobile-movement {
    -webkit-appearance: none;
    width: 50vw;
    height: 12vw;
    background: #29323c;
    border: none;
    -webkit-transition: .2s;
    transition: opacity .2s;
    position: relative;
}
  
#mobile-movement::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12vw;
    height: 12vw;
    background: #95b365;
    border-radius: 50%;
    border: 2px solid black;
}
  
#mobile-movement::-moz-range-thumb {
    width: 12vw;
    height: 12vw;
    background: #95b365;
    border-radius: 50%;
    border: 2px solid black;
}
  
#mobile-movement::before,
#mobile-movement::after {
    content: "";
    display: block;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 5px 0 5px 8.7px;
    border-color: transparent transparent transparent #fff;
}
  
#mobile-movement::before {
    left: 0;
}
  
#mobile-movement::after {
    right: 0;
    border-width: 5px 8.7px 5px 0;
    border-color: transparent #fff transparent transparent;
}