/**
 * VR-specific styles with modern glassmorphism and tasteful shimmer
 * Premium design for VR button with polished visual effects
 */

/* Fallback base styles - ensures button is always visible */
#VRButton, 
button[id*="VR"], 
div[id*="VR"] button,
.vr-button-glass,
[style*="position: absolute"][style*="bottom"] {
  display: flex !important;
  visibility: visible !important;
  opacity: 1 !important;
}

/* Modern Glassmorphism VR Button with Shimmer */
#VRButton, 
button[id*="VR"], 
div[id*="VR"] button,
.vr-button-glass,
[style*="position: absolute"][style*="bottom"] {
  /* Positioning */
  position: fixed !important;
  bottom: 80px !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  z-index: 100 !important;
  
  /* Sizing */
  padding: 16px 32px !important;
  min-width: 160px !important;
  height: 56px !important;
  
  /* Modern Glassmorphism Design */
  background: rgba(255, 255, 255, 0.1) !important;
  backdrop-filter: blur(20px) saturate(140%) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  border-radius: 16px !important;
  
  /* Typography */
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
  font-size: 14px !important;
  font-weight: 300 !important;
  color: #ffffff !important;
  text-transform: uppercase !important;
  letter-spacing: 0.1em !important;
  white-space: nowrap !important;
  text-align: center !important;
  line-height: 1.2 !important;
  
  /* Layout */
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  
  /* Premium Effects */
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.3),
    0 2px 8px rgba(78, 195, 255, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.05) !important;
  cursor: pointer !important;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
  outline: none !important;
  text-decoration: none !important;
  
  /* Shimmer Effect Setup */
  position: relative !important;
  overflow: hidden !important;
}

/* Shimmer overlay - occasional inviting sweep every 4 seconds */
#VRButton::before,
button[id*="VR"]::before,
div[id*="VR"] button::before,
.vr-button-glass::before,
.vr-button-available::before,
[style*="position: absolute"][style*="bottom"]::before {
  content: '' !important;
  position: absolute !important;
  top: 0 !important;
  left: -100% !important;
  width: 100% !important;
  height: 100% !important;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.15),
    rgba(255, 255, 255, 0.3),
    rgba(255, 255, 255, 0.15),
    transparent
  ) !important;
  animation: vrShimmerInviting 4s ease-in-out infinite !important;
  border-radius: 16px !important;
  pointer-events: none !important;
}

/* Inviting shimmer animation - every 4 seconds with pause */
@keyframes vrShimmerInviting {
  0%, 80% {
    left: -100% !important;
    opacity: 0 !important;
  }
  85% {
    left: -50% !important;
    opacity: 0.5 !important;
  }
  90% {
    left: 0 !important;
    opacity: 1 !important;
  }
  95% {
    left: 50% !important;
    opacity: 0.5 !important;
  }
  100% {
    left: 100% !important;
    opacity: 0 !important;
  }
}

/* Original shimmer for hover state */
@keyframes vrShimmer {
  0% {
    left: -100% !important;
    opacity: 0 !important;
  }
  50% {
    left: 0 !important;
    opacity: 1 !important;
  }
  100% {
    left: 100% !important;
    opacity: 0 !important;
  }
}

/* Subtle shimmer variant for less dramatic effect */
@keyframes vrShimmerSubtle {
  0%, 100% {
    background-position: -200% center !important;
  }
  50% {
    background-position: 200% center !important;
  }
}

/* VR Icon styling (if using icon) */
.vr-icon {
  font-size: 16px !important;
  opacity: 0.9 !important;
}

/* Hover State - Enhanced glassmorphism */
#VRButton:hover,
button[id*="VR"]:hover,
div[id*="VR"] button:hover,
.vr-button-glass:hover,
[style*="position: absolute"][style*="bottom"]:hover {
  background: rgba(255, 255, 255, 0.15) !important;
  border-color: rgba(255, 255, 255, 0.3) !important;
  transform: translateX(-50%) translateY(-2px) !important;
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.4),
    0 4px 12px rgba(78, 195, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.08) !important;
}

#VRButton:hover::before,
button[id*="VR"]:hover::before,
div[id*="VR"] button:hover::before,
.vr-button-glass:hover::before,
.vr-button-available:hover::before,
[style*="position: absolute"][style*="bottom"]:hover::before {
  animation: vrShimmer 1.5s ease-in-out infinite !important; /* Faster shimmer on hover */
}

/* Active State - Premium press feedback */
#VRButton:active,
button[id*="VR"]:active,
div[id*="VR"] button:active,
.vr-button-glass:active,
[style*="position: absolute"][style*="bottom"]:active {
  transform: translateX(-50%) translateY(-1px) !important;
  background: rgba(255, 255, 255, 0.2) !important;
  box-shadow: 
    0 6px 20px rgba(0, 0, 0, 0.4),
    0 2px 6px rgba(78, 195, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.1) !important;
  transition: all 0.1s ease !important; /* Quick response */
}

/* VR button not available - completely hidden */


/* VR button disabled/not allowed - greyed out */
.vr-button-disabled,
#VRButton.vr-button-disabled,
button.vr-button-disabled {
  background: rgba(156, 163, 175, 0.1) !important;
  border: 1px solid rgba(156, 163, 175, 0.3) !important;
  color: #9ca3af !important;
  cursor: not-allowed !important;
  opacity: 0.6 !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2) !important;
  pointer-events: none !important;
}

/* No shimmer for disabled state */
.vr-button-disabled::before,
#VRButton.vr-button-disabled::before,
button.vr-button-disabled::before {
  display: none !important;
}

/* Update responsive design for mobile */
@media (max-width: 768px) {
  #VRButton,
  button[id*="VR"],
  div[id*="VR"] button,
  .vr-button-glass,
  [style*="position: absolute"][style*="bottom"] {
    bottom: 60px !important;
    padding: 12px 24px !important;
    min-width: 140px !important;
    height: 48px !important;
    font-size: 12px !important;
  }
  
  .vr-icon {
    font-size: 14px !important;
  }
  
  #info {
    display: none;
  }
}

/* VR-specific UI positioning when in VR mode */
.vr-mode #info {
  /* Hide desktop info panel in VR */
  display: none !important;
}

.vr-mode #modelSelector {
  /* Adjust model selector for VR mode if needed */
  pointer-events: none;
  opacity: 0.5;
}

/* VR controller visualization (optional) */
.vr-controller {
  pointer-events: none;
}

/* VR-specific loading indicators */
.vr-loading {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 20px;
  border-radius: 10px;
  font-size: 18px;
  z-index: 1000;
}

/* VR measurement tools styling (for future use) */
.vr-measurement-panel {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 15px;
  border-radius: 10px;
  border: 2px solid #87cefa;
  z-index: 100;
  font-family: monospace;
}

/* VR crosshair or reticle */
.vr-reticle {
  position: fixed;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 999;
}

/* CSS loading marker for VR button detection */
.vr-mode-active {
  --vr-css-loaded: true;
  opacity: 0.999;
}

/* VR teleportation indicator */
.vr-teleport-indicator {
  position: absolute;
  width: 2px;
  height: 2px;
  background: #00ff00;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.8;
}

/* VR hand tracking visualization */
.vr-hand-model {
  pointer-events: none;
}

/* VR spotlight indicator */
.vr-spotlight-indicator {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  text-align: center;
  pointer-events: none;
  z-index: 90;
}

/* Safari-specific fixes - backdrop filter support only */
@supports (-webkit-appearance: none) {
  #VRButton,
  button[id*="VR"],
  div[id*="VR"] button,
  .vr-button-glass,
  [style*="position: absolute"][style*="bottom"] {
    /* Safari backdrop-filter fallback */
    backdrop-filter: blur(20px) saturate(140%) !important;
    -webkit-backdrop-filter: blur(20px) saturate(140%) !important;
  }
}