*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #1a1428;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", sans-serif;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

#app {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #2a1f45 0%, #120d1f 100%);
}

#game-canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  image-rendering: auto;
  -webkit-font-smoothing: antialiased;
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
}

#loading {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #2a1f45;
  color: #fff;
  font-size: 18px;
  z-index: 10;
  transition: opacity 0.3s;
}

#loading.hidden {
  opacity: 0;
  pointer-events: none;
}