/* Base Resets & Variables */
:root {
  --bg-color: #0f172a; /* Dark night sky */
  --text-main: #f8fafc; /* Light text */
  --primary-orange: #ff9900; /* Warm glow orange */
  --primary-hover: #ffaa33;
  --glass-bg: rgba(15, 23, 42, 0.6); /* Dark glass */
  --glass-border: rgba(255, 255, 255, 0.1);
  --font-heading: 'Fredoka', sans-serif;
  --font-body: 'Nunito', sans-serif;
}

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

body {
  font-family: var(--font-body);
  color: var(--text-main);
  background-color: var(--bg-color);
  overflow: hidden; /* NO SCROLLING ALLOWED */
}

/* 3D Canvas */
#webgl-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1; 
  touch-action: none; /* Prevents mobile browser gesture delays and scroll stutter */
}
/* Hand cursor when hovering interactable 3D objects */
body.pointer-active #webgl-canvas {
  cursor: pointer;
}

/* Navigation */
.top-nav {
  position: absolute;
  top: 0; left: 0; right: 0;
  padding: 20px 40px;
  display: flex;
  justify-content: flex-end; /* changed from space-between */
  align-items: center;
  z-index: 100;
  pointer-events: none;
}
.top-nav .logo {
  display: none;
}

.top-nav > * {
  pointer-events: auto;
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 15px;
}

.icon-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.btn-primary {
  background: var(--primary-orange);
  color: #1a1a1a;
  text-decoration: none;
  padding: 12px 24px;
  border-radius: 30px;
  font-weight: 700;
  transition: transform 0.2s, background 0.2s;
  box-shadow: 0 4px 15px rgba(255, 153, 0, 0.3);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

/* UI Overlay Layer */
.ui-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 10;
  pointer-events: none; /* Let clicks pass through to 3D canvas by default */
}

/* Base Panel Styles */
.ui-panel, .overlay-section {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%); /* CSS centering */
  width: 90%;
  max-width: 1200px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.ui-panel.active, .overlay-section.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto; /* Enable clicks when active */
}

/* Specific Widths */
#ui-intro { 
  position: fixed;
  top: 20px;
  left: 40px;
  max-width: 300px;
  text-align: left;
  transform: none; /* Override .ui-panel centering */
  background: transparent;
  border: none;
  padding: 0;
  box-shadow: none;
  backdrop-filter: none;
}
#ui-intro .main-title {
  font-size: 3rem;
  line-height: 1.1;
  text-shadow: none; /* Make it look flatter like UI */
  margin-bottom: 5px;
}
#ui-intro .center-content {
  align-items: flex-start;
}
#ui-intro .logo { display: none; /* Hide duplicate logo if any */ }
#ui-menu { max-width: 600px; }

/* Floating Enter Button */
#enter-btn {
  position: absolute;
  top: -1000px; /* Hidden initially */
  left: 0;
  transform: translate(-50%, -50%);
  z-index: 20;
  background: var(--primary-orange);
  color: #1a1a1a;
  border: 2px solid rgba(255,255,255,0.2);
  padding: 12px 24px;
  border-radius: 30px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  cursor: pointer;
  pointer-events: auto;
  box-shadow: 0 10px 25px rgba(255,153,0,0.4);
  transition: opacity 0.2s, transform 0.2s;
  animation: pulse-btn 2s infinite;
}

#enter-btn:hover {
  background: var(--primary-hover);
  animation: none;
  transform: translate(-50%, -50%) scale(1.1);
}

@keyframes pulse-btn {
  0% { transform: translate(-50%, -50%) scale(1); box-shadow: 0 0 0 0 rgba(255,153,0, 0.4); }
  70% { transform: translate(-50%, -50%) scale(1.05); box-shadow: 0 0 0 15px rgba(255,153,0, 0); }
  100% { transform: translate(-50%, -50%) scale(1); box-shadow: 0 0 0 0 rgba(255,153,0, 0); }
}

/* Menu Grid */
.menu-grid {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 2rem;
}

.menu-btn {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--primary-orange);
  color: var(--text-main);
  padding: 15px 30px;
  border-radius: 12px;
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.menu-btn:hover {
  background: var(--primary-orange);
  color: #1a1a1a;
  transform: scale(1.02);
}

.back-btn {
  background: none;
  border: none;
  color: var(--primary-orange);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  transition: transform 0.2s;
}
.back-btn:hover {
  transform: translateX(-5px);
}

/* Glass Panel Component */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2.5rem;
  box-shadow: 0 15px 35px rgba(0,0,0,0.5);
  max-height: 85vh;
  overflow-y: auto;
}

.glass-panel::-webkit-scrollbar { width: 8px; }
.glass-panel::-webkit-scrollbar-track { background: transparent; }
.glass-panel::-webkit-scrollbar-thumb {
  background-color: rgba(255, 138, 0, 0.4);
  border-radius: 10px;
}

.glass-panel h2 {
  font-family: var(--font-heading);
  margin-bottom: 1.5rem;
  color: var(--primary-orange);
}

/* Typography & Layouts */
.main-title {
  font-family: var(--font-heading);
  font-size: 6rem;
  line-height: 1.1;
  color: var(--text-main);
  margin-bottom: 10px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.subtitle-badge {
  display: inline-block;
  background: var(--primary-orange);
  color: #1a1a1a;
  padding: 8px 16px;
  font-family: var(--font-heading);
  font-weight: 800;
  transform: rotate(-3deg);
  box-shadow: 2px 2px 0px rgba(255,255,255,0.2);
  letter-spacing: 2px;
}

.text-center { text-align: center; }

/* Dynamically Injected Styles */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.bento-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 15px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  transition: transform 0.2s;
}

.bento-item:hover { transform: translateY(-5px); background: rgba(255,255,255,0.1); }
.section-subtitle { font-weight: 700; margin-bottom: 5px; color: var(--text-main); }
.section-content { font-size: 0.9rem; color: #cbd5e1; margin-bottom: 10px; }

.stat-pill {
  display: inline-block;
  background: rgba(255,255,255,0.1);
  color: var(--primary-orange);
  padding: 3px 8px;
  border-radius: 10px;
  font-size: 0.75rem;
  margin-right: 5px;
  margin-bottom: 5px;
}

.metrics-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.metric-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 15px 20px;
  border-radius: 15px;
  text-align: center;
  flex: 1 1 calc(50% - 15px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  color: var(--primary-orange);
  font-weight: 700;
  text-shadow: 0 0 10px rgba(255,153,0,0.5);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.event-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 15px;
  border-radius: 12px;
  border-left: 4px solid var(--primary-orange);
}

.event-date {
  font-weight: 700;
  color: var(--primary-orange);
  font-size: 0.85rem;
}

.badge-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.badge-item {
  display: flex;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 15px;
  border-radius: 12px;
  align-items: center;
  gap: 15px;
}

.badge-icon-wrap svg { color: var(--primary-orange); filter: drop-shadow(0 0 5px rgba(255,153,0,0.5)); }
/* AR Projection Style for Interior */
.overlay-section .glass-panel { background: transparent; backdrop-filter: none; -webkit-backdrop-filter: none; border: none; box-shadow: none; padding-top: 5vh; max-height: 100vh; overflow-y: visible; }
.overlay-section { background: transparent; }


/* Custom Scrollbar for Timelines */
.custom-scrollbar::-webkit-scrollbar {
  width: 8px;
}
.custom-scrollbar::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
  background: #10b981;
  border-radius: 4px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: #34d399;
}





/* Mobile Safari & Small Screen Adaptations */
@media (max-width: 768px) {
  body, html, .ui-layer, #webgl-canvas, #bg-canvas {
    height: 100dvh !important; /* Fix bottom bar issue on iOS Safari */
  }
  .top-nav { padding: 12px 12px !important; }
  .nav-controls { gap: 6px !important; }
  .btn-secondary, .btn-primary { 
    padding: 6px 12px !important; 
    font-size: 0.78rem !important; 
  }
  .main-title { font-size: 3rem !important; }
  .neon-title { font-size: 28px !important; }
  .neon-subtitle { font-size: 18px !important; }
  .neon-modal-content, .glass-panel { 
    max-height: 85dvh !important; 
    padding: 20px !important;
    width: 95% !important;
  }
  .menu-grid { margin-top: 1rem !important; }
  .menu-btn { padding: 12px 20px !important; font-size: 1rem !important; }
  #ui-intro {
    top: 10px !important;
    left: 10px !important;
    max-width: 90% !important;
  }
  #btn-back, #btn-upstairs, #btn-downstairs, #btn-firstperson {
    padding: 10px 15px !important; /* Larger touch targets for mobile */
    font-size: 14px !important;
  }
}

@media (max-width: 480px) {
  .nav-controls .nav-sub { display: none; } /* Ultra-narrow phones: hide sub-language to maintain clean single row */
  .btn-secondary, .btn-primary {
    padding: 5px 8px !important;
    font-size: 0.72rem !important;
  }
}