:root {
  color-scheme: dark;
  font-family: Arial, Helvetica, sans-serif;
  background: #0b2116;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
}

body {
  display: grid;
  place-items: center;
  background-color: #0b2116;
  background-image:
    linear-gradient(rgba(7, 25, 16, 0.58), rgba(7, 25, 16, 0.58)),
    url("js/assets/jungle.png");
  background-position: center;
  background-size: cover;
}

.shell {
  display: grid;
  place-items: center;
  width: min(450px, 100vw, 75vh);
  width: min(450px, 100vw, 75dvh);
  aspect-ratio: 3 / 4;
  filter: drop-shadow(0 18px 40px rgba(0, 0, 0, 0.4));
  overflow: hidden;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  background: #dcefd6;
  cursor: pointer;
  touch-action: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
}