* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  overflow: hidden;
  font-family: 'Courier New', monospace;
  background: #000;
}

#app {
  width: 100vw;
  height: 100vh;
  position: relative;
}

#canvas {
  width: 100%;
  height: 100%;
  display: block;
}

#ui-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
}

#debug-info {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0, 0, 0, 0.7);
  color: #0f0;
  padding: 10px;
  font-size: 12px;
  font-family: monospace;
  border: 1px solid #0f0;
}

#debug-info.hidden {
  display: none;
}

#loading-screen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  transition: opacity 0.5s;
}

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

.loading-text {
  color: #fff;
  font-size: 24px;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}