body {
  background-color: #000;
  color: #fff;

  /* Allow mouse dragging. */
  -moz-user-select: none;
  -ms-user-select: none;
  -o-user-select: none;
  -webkit-user-select: none;
  user-select: none;

  /* disable touch panning/zooming */
  -ms-touch-action: none;
  touch-action: none;

  /* Allow canvas to hit the edges of the browser viewport. */
  margin: 0;
}

#screen canvas {
  margin: auto;
  /* Hide the gap for font descenders. */
  display: block;
}

html, body {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
}

/* Boot screen shown while the first assets load. */
#boot {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  background: radial-gradient(circle at 50% 40%, #6fbf4a, #2b6a1f 70%);
}

#boot img {
  width: min(72vw, 360px);
  animation: boot-bob 1.6s ease-in-out infinite alternate;
}

.boot-bar {
  width: min(56vw, 260px);
  height: 14px;
  border-radius: 7px;
  background: rgba(0, 0, 0, 0.35);
  box-shadow: 0 0 0 3px #7a4a22;
  overflow: hidden;
}

.boot-bar i {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(#ffd36a, #f59a23);
  transition: width 0.2s;
}

@keyframes boot-bob { to { transform: translateY(-8px); } }

@media (prefers-reduced-motion: reduce) {
  #boot img { animation: none; }
}