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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background: #1e1e1e;
  color: #ffffff;
}

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

/* Info Panel */
#info {
  position: absolute;
  top: 20px;
  left: 20px;
  background: rgba(20, 20, 25, 0.9);
  backdrop-filter: blur(12px);
  padding: 20px 25px;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  max-width: 260px;
  transition: all 0.3s ease;
}

#info:hover {
  background: rgba(25, 25, 30, 0.95);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6);
  border-color: rgba(65, 105, 225, 0.3);
}

#info h2 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
  color: #4169E1;
  border-bottom: 2px solid rgba(65, 105, 225, 0.3);
  padding-bottom: 8px;
}

#info hr {
  border: none;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin: 12px 0;
}

#info p {
  font-size: 12px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.75);
  margin: 6px 0;
}

#info strong {
  color: rgba(255, 255, 255, 0.95);
}

/* lil-gui Styling */
.lil-gui {
  --background-color: rgba(20, 20, 28, 0.95) !important;
  --widget-color: rgba(80, 120, 220, 0.6) !important;
  --focus-color: rgba(80, 120, 220, 1) !important;
  --hover-color: rgba(80, 120, 220, 0.25) !important;
  --font-family: 'Segoe UI', -apple-system, sans-serif !important;
  --font-size: 12px !important;
  --input-font-size: 12px !important;
  --padding: 8px !important;
  --spacing: 4px !important;
  --widget-height: 26px !important;
  --title-background-color: transparent !important;
  --title-text-color: #fff !important;
  --number-color: #7dd3fc !important;
  --string-color: #fcd34d !important;
  --folder-indent: 8px !important;
  --widget-border-radius: 4px !important;
  
  backdrop-filter: blur(16px) !important;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4) !important;
  border: 1px solid rgba(255, 255, 255, 0.06) !important;
  border-radius: 12px !important;
  overflow: hidden !important;
}

.lil-gui.root {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
}

.lil-gui.root > .title {
  background: linear-gradient(135deg, #5078dc 0%, #8b5cf6 100%) !important;
  color: white !important;
  font-weight: 600 !important;
  font-size: 13px !important;
  padding: 0px 14px 14px 14px !important;
  letter-spacing: 0.3px !important;
  text-transform: none !important;
}

.lil-gui .title {
  font-weight: 500 !important;
  font-size: 12px !important;
  text-transform: none !important;
  letter-spacing: 0.5px !important;
  padding: 6px 10px !important;
  color: rgba(255, 255, 255, 0.6) !important;
  background: transparent !important;
  border-top: 1px solid rgba(255, 255, 255, 0.06) !important;
  margin: 0 !important;
}

.lil-gui .children {
  padding: 2px 6px 6px 6px !important;
}

.lil-gui .controller {
  margin: 2px 0 !important;
  padding: 4px 6px !important;
  border-radius: 4px !important;
  transition: background 0.1s ease !important;
}

.lil-gui .controller:hover {
  background: rgba(80, 120, 220, 0.08) !important;
}

.lil-gui .controller .name {
  color: rgba(255, 255, 255, 0.8) !important;
  font-weight: 400 !important;
}

.lil-gui .controller.boolean {
  padding-right: 4px !important;
}

/* iOS-Style Toggle Switch */
.lil-gui input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 36px !important;
  height: 20px !important;
  border-radius: 10px !important;
  background: rgba(255, 255, 255, 0.15) !important;
  border: none !important;
  cursor: pointer !important;
  position: relative !important;
  transition: background 0.2s ease !important;
}

.lil-gui input[type="checkbox"]::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: white;
  top: 2px;
  left: 2px;
  transition: all 0.2s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.lil-gui input[type="checkbox"]:checked {
  background: linear-gradient(135deg, #5078dc 0%, #8b5cf6 100%) !important;
  border-color: transparent !important;
}

.lil-gui input[type="checkbox"]:checked::before {
  left: 18px;
}

.lil-gui .slider {
  border-radius: 10px !important;
  background: rgba(255, 255, 255, 0.08) !important;
  height: 9px !important; /* Slider Höhe anpassen */
}

.lil-gui .slider > .fill {
  background: linear-gradient(90deg, #5078dc 0%, #8b5cf6 100%) !important;
  border-radius: 10px !important;
}

.lil-gui input[type="text"],
.lil-gui input[type="number"] {
  background: rgba(255, 255, 255, 0.06) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  border-radius: 4px !important;
  color: #7dd3fc !important;
  font-weight: 500 !important;
}

.lil-gui input[type="color"] {
  border-radius: 4px !important;
  border: 1px solid rgba(255, 255, 255, 0.15) !important;
  cursor: pointer !important;
}

/* Responsive */
@media (max-width: 768px) {
  #info {
    font-size: 12px;
    padding: 15px 20px;
    max-width: 220px;
  }
  
  #info h2 {
    font-size: 16px;
  }
  
  #info p {
    font-size: 11px;
  }
  
  .lil-gui.root {
    top: 10px;
    right: 10px;
  }
}

/* Loading State */
body::before {
  content: 'WebGPU wird geladen...';
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(30, 30, 30, 0.9);
  backdrop-filter: blur(10px);
  padding: 20px 40px;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  font-size: 16px;
  color: #4169E1;
  z-index: 9999;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

canvas {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

body.loaded::before {
  display: none;
}

/* Error Message */
#error {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(20, 20, 25, 0.95);
  backdrop-filter: blur(12px);
  padding: 16px 20px;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(220, 20, 60, 0.3);
  z-index: 10000;
  max-width: 280px;
  font-size: 12px;
}

#error p {
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
}