html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #141414;
  font-family: 'Roboto', sans-serif;
  /* Performance optimizations */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeSpeed;
  /* Prevent unnecessary repaints */
  will-change: auto;
}

#unity-container {
  width: 100%;
  height: 100%;
  position: relative;
  /* Hardware acceleration */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  /* Optimize compositing */
  isolation: isolate;
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
  /* GPU acceleration for canvas */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  /* Optimize image rendering */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: -moz-crisp-edges;
  image-rendering: pixelated;
  /* Prevent selection and touch callouts */
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  /* Optimize for touch devices */
  touch-action: manipulation;
}

#loader {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #141414;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 200;
  color: #fff;
  text-align: center;
  padding: 20px;
  box-sizing: border-box;
  /* Optimize transitions */
  opacity: 1;
  transition: opacity 0.3s ease-out;
  /* Hardware acceleration */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  /* Optimize backdrop */
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
}

#loader.fade-out {
  opacity: 0;
  pointer-events: none;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Optimize text rendering */
#loader h1 {
  font-size: 20px;
  margin-bottom: 10px;
  letter-spacing: 1px;
  /* Optimize text rendering */
  text-rendering: optimizeSpeed;
  -webkit-font-smoothing: antialiased;
  /* Prevent layout shifts */
  font-display: swap;
}

#loader p {
  margin: 0;
  font-size: 16px;
  margin-bottom: 20px;
  opacity: 0.9;
  /* Optimize text rendering */
  text-rendering: optimizeSpeed;
  -webkit-font-smoothing: antialiased;
  /* Prevent layout shifts */
  font-display: swap;
}

.progress-container {
  width: 10%;
  min-width: 200px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  height: 4px;
  /* Hardware acceleration */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  /* Optimize compositing */
  will-change: transform;
}

.progress-bar {
  width: 0;
  height: 6px;
  background: linear-gradient(90deg, #ff9e02, #fe7710);
  border-radius: 3px;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  /* Hardware acceleration */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  /* Optimize for animations */
  will-change: width;
}

#loader .progress-text {
  margin-top: 10px;
  font-size: 14px;
  opacity: 0.9;
  /* Optimize text rendering */
  text-rendering: optimizeSpeed;
  -webkit-font-smoothing: antialiased;
  /* Prevent layout shifts */
  font-display: swap;
  /* Optimize for number changes */
  font-variant-numeric: tabular-nums;
}

#unity-loading-bar,
#unity-footer,
#unity-fullscreen-button {
  display: none;
}

/* Mobile-specific optimizations */
@media screen and (max-width: 768px) {
  body {
    /* Prevent zoom on input focus */
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
  }
  
  canvas {
    /* Optimize for mobile touch */
    -webkit-tap-highlight-color: transparent;
    /* Prevent scrolling */
    overscroll-behavior: none;
  }
  
  .progress-container {
    width: 80%;
    min-width: unset;
  }
}

/* Performance optimizations for high-DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  canvas {
    /* Optimize for retina displays */
    image-rendering: -webkit-optimize-contrast;
  }
}

/* Reduce animations on low-end devices */
@media (prefers-reduced-motion: reduce) {
  .progress-bar {
    transition: none;
  }
  
  #loader {
    transition: none;
  }
}