* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  display: grid;
  place-items: center;
  overflow: hidden;
  color: #183448;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(#9bd8ff 0%, #c6ecff 55%, #8fd16f 56%, #5ca84b 100%);
  touch-action: none;
  user-select: none;
}

.game-shell {
  width: min(100vw, 1100px);
  height: min(100vh, 720px);
  padding: 12px;
}

#game {
  display: block;
  width: 100%;
  height: calc(100% - 36px);
  min-height: 320px;
  border: 4px solid rgba(35, 80, 80, 0.5);
  border-radius: 22px;
  background: #9bd8ff;
  box-shadow: 0 20px 45px rgba(20, 55, 40, 0.28);
}

.hint {
  margin: 8px 0 0;
  text-align: center;
  font-size: clamp(16px, 2.3vw, 22px);
  font-weight: 700;
}