body {
  background: black;
  color: white;
  font-family: monospace, monospace;
  text-align: center;
  padding: 1.5rem;
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

h1 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  padding: 0 1rem;
}

input[type="file"] {
  margin: 1rem auto;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  background: #222;
  border: 1px solid white;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  max-width: 90vw;
}

canvas {
  display: block;
  margin: 1rem auto 0;
  width: 90vw;
  max-width: 480px;
  border: 5px solid white;
  border-radius: 8px;
  image-rendering: pixelated;
  background: black;
}

video {
  display: none;
}