html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #e9f8ff;
  font-family: Arial, Helvetica, sans-serif;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

#game-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 75% 18%, rgba(255,231,129,.35), transparent 30%),
    linear-gradient(180deg, #eafaff 0%, #a9dc64 100%);
}

canvas {
  display: block;
  position: relative;
  z-index: 1;
  width: min(100vw, calc(100vh * 4 / 3));
  height: min(100vh, calc(100vw * 3 / 4));
  max-width: 100vw;
  max-height: 100vh;
  image-rendering: auto;
  touch-action: none;
}


#splash-ui {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}

.real-menu-button {
  position: absolute;
  border: 0;
  cursor: pointer;
  pointer-events: auto;
  touch-action: manipulation;
  font-family: Arial Black, Arial, Helvetica, sans-serif;
  font-weight: 900;
  color: #fff;
  letter-spacing: 1px;
  text-shadow: 0 3px 4px rgba(0,0,0,.38);
  border-radius: 999px;
  box-shadow: 0 9px 0 rgba(91,54,8,.35), 0 14px 22px rgba(30,25,8,.30);
  transform-origin: center;
  transition: transform .12s ease, filter .12s ease, box-shadow .12s ease;
  -webkit-tap-highlight-color: transparent;
}

.real-menu-button:hover {
  transform: scale(1.035);
  filter: brightness(1.06);
}

.real-menu-button:active {
  transform: scale(.965) translateY(3px);
  box-shadow: 0 5px 0 rgba(91,54,8,.35), 0 8px 16px rgba(30,25,8,.28);
}

.real-menu-button.play {
  background: linear-gradient(180deg, #a8ec39 0%, #61b913 48%, #2f7908 100%);
  border: max(3px, .45vw) solid #f1ca4e;
  box-shadow: inset 0 5px 0 rgba(255,255,255,.30), inset 0 -7px 0 rgba(0,65,0,.20), 0 9px 0 rgba(91,54,8,.35), 0 14px 22px rgba(30,25,8,.30);
}

.real-menu-button.more {
  background: linear-gradient(180deg, #ffc13e 0%, #e08d12 50%, #a94d05 100%);
  border: max(2px, .34vw) solid #f1ca4e;
  box-shadow: inset 0 4px 0 rgba(255,255,255,.30), inset 0 -6px 0 rgba(99,42,0,.20), 0 7px 0 rgba(91,54,8,.32), 0 11px 18px rgba(30,25,8,.26);
}