/* ==========================================================================
   THE TRAVERTINE SANCTUARY - HAUTE ARCHITECTURAL BEIGE DESIGN SYSTEM
   Warm French Limestone • Travertine Beige • Brushed Bronze • Deep Espresso
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600;700;800;900&family=Outfit:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  /* Warm Beige & Limestone Palette */
  --beige-50: #faf8f5;
  --beige-100: #f5f1e8;
  --beige-200: #eee8dc;
  --beige-300: #e2d8c6;
  --beige-400: #d4c6af;
  --beige-500: #bfaf95;

  /* Deep Espresso & Charcoal (High-Contrast Luxury Typography) */
  --espresso-950: #14110e;
  --espresso-900: #1e1a16;
  --espresso-800: #2d2722;
  --espresso-700: #423b34;
  --espresso-600: #5c534a;
  --espresso-500: #7a7065;
  --espresso-400: #998e82;

  /* Brushed Bronze & Warm Gold Accents */
  --bronze-200: #faeed4;
  --bronze-300: #eccf94;
  --bronze-400: #d4a648;
  --bronze-500: #b88628;
  --bronze-600: #966917;
  --bronze-gradient: linear-gradient(135deg, #e5be6b 0%, #b88628 50%, #875e12 100%);
  --bronze-glow: rgba(184, 134, 40, 0.2);

  /* Biophilic Sage Green */
  --sage-50: #f2f7f5;
  --sage-100: #e2ece7;
  --sage-500: #416a5c;
  --sage-700: #26463c;
  --sage-900: #142721;

  /* Typography */
  --font-display: 'Cinzel', serif;
  --font-interface: 'Outfit', sans-serif;
  --font-mono: 'Space Grotesk', monospace;

  /* Elevation & Shadows */
  --shadow-hud: 0 10px 35px -5px rgba(30, 26, 22, 0.08);
  --shadow-bento: 0 8px 30px rgba(30, 26, 22, 0.05);
  --shadow-card-hover: 0 16px 40px -10px rgba(30, 26, 22, 0.12), 0 0 25px rgba(184, 134, 40, 0.1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--beige-100);
  color: var(--espresso-800);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-interface);
  background: var(--beige-100);
  color: var(--espresso-800);
  overflow-x: hidden;
  line-height: 1.6;
}

/* Typography Utility */
.font-display {
  font-family: var(--font-display);
}

.font-interface {
  font-family: var(--font-interface);
}

.font-mono {
  font-family: var(--font-mono);
}

.text-bronze {
  color: var(--bronze-500);
}

.text-bronze-gradient {
  background: var(--bronze-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Container */
.arch-container {
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (min-width: 1600px) {
  .arch-container {
    max-width: 1520px;
  }
}

/* Floating Architectural HUD Navbar (Frosted Limestone) */
.hud-nav {
  background: rgba(245, 241, 232, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(212, 198, 175, 0.7);
  box-shadow: var(--shadow-hud);
}

.hud-nav.scrolled {
  background: rgba(250, 248, 245, 0.96);
  border-color: rgba(184, 134, 40, 0.35);
}

/* Bento Grid Cards (Warm Ivory on Limestone) */
.bento-card {
  background: #ffffff;
  border: 1px solid var(--beige-300);
  border-radius: 24px;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-bento);
  color: var(--espresso-900);
}

.bento-card:hover {
  border-color: var(--bronze-400);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

/* Dark Bento Accent for key Hero Highlights */
.bento-card-dark {
  background: var(--espresso-950);
  color: #ffffff;
  border: 1px solid rgba(184, 134, 40, 0.3);
  border-radius: 24px;
  box-shadow: 0 12px 35px rgba(20, 17, 14, 0.25);
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.bento-card-dark:hover {
  border-color: var(--bronze-300);
  transform: translateY(-4px);
}

/* Modern Minimalist Buttons */
.btn-bronze {
  background: var(--bronze-gradient);
  color: #ffffff;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.85rem 1.85rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 8px 22px -3px rgba(184, 134, 40, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  text-decoration: none;
  font-size: 0.875rem;
  text-transform: uppercase;
}

.btn-bronze:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px 0 rgba(184, 134, 40, 0.45);
  filter: brightness(1.04);
}

.btn-ghost-arch {
  background: #ffffff;
  color: var(--espresso-900);
  border: 1.5px solid var(--beige-300);
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.8rem 1.75rem;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  text-decoration: none;
  font-size: 0.875rem;
  text-transform: uppercase;
  box-shadow: 0 2px 8px rgba(30, 26, 22, 0.04);
}

.btn-ghost-arch:hover {
  background: var(--beige-50);
  border-color: var(--bronze-500);
  color: var(--bronze-600);
  transform: translateY(-2px);
}

/* Lighting Mode Indicator */
.mode-pill {
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--beige-300);
  background: #ffffff;
  color: var(--espresso-600);
  cursor: pointer;
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.mode-pill.active {
  background: var(--espresso-900);
  color: #ffffff;
  border-color: var(--espresso-900);
  box-shadow: 0 2px 10px rgba(30, 26, 22, 0.15);
}

/* Custom Beige Sliders */
input[type="range"].arch-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--beige-300);
  outline: none;
  cursor: pointer;
}

input[type="range"].arch-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bronze-gradient);
  box-shadow: 0 2px 10px rgba(184, 134, 40, 0.4);
  border: 2.5px solid #ffffff;
  cursor: pointer;
  transition: transform 0.15s ease;
}

input[type="range"].arch-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Modals */
.arch-modal-backdrop {
  display: none !important;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.arch-modal-backdrop.open {
  display: flex !important;
  opacity: 1;
  visibility: visible;
}

.arch-modal-content {
  transform: translateY(16px) scale(0.97);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  background: #ffffff;
  color: var(--espresso-900);
  border: 1px solid var(--beige-300);
}

.arch-modal-backdrop.open .arch-modal-content {
  transform: translateY(0) scale(1);
}

/* Floating Action Dock */
.floating-dock {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.floating-action-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(30, 26, 22, 0.18);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  text-decoration: none;
}

.floating-action-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 28px rgba(184, 134, 40, 0.35);
}

/* Architectural Grid Pattern on Beige */
.bg-cad-grid {
  background-image: linear-gradient(to right, rgba(140, 120, 95, 0.08) 1px, transparent 1px),
                    linear-gradient(to bottom, rgba(140, 120, 95, 0.08) 1px, transparent 1px);
  background-size: 36px 36px;
}

/* Hotspots on Beige Masterplan */
.plan-hotspot {
  position: absolute;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--espresso-950);
  border: 2.5px solid #ffffff;
  color: #ffffff;
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translate(-50%, -50%);
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  transition: all 0.25s ease;
}

.plan-hotspot:hover {
  background: var(--bronze-500);
  transform: translate(-50%, -50%) scale(1.25);
}

/* Modal Animations & Lightbox Styles */
.cursor-zoom-in {
  cursor: zoom-in;
}

.aspect-video {
  aspect-ratio: 16 / 9;
}

/* Master Gallery Styles */
.gallery-card {
  position: relative;
  overflow: hidden;
  border-radius: 1.25rem;
  background-color: #faf8f5;
  border: 1px solid var(--beige-300);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px -8px rgba(30, 26, 22, 0.12);
  border-color: var(--bronze-500);
}

.gallery-card img {
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-card:hover img {
  transform: scale(1.05);
}

/* Plan Blueprint & High-Res View Switcher */
.plan-view-btn.active {
  background-color: var(--espresso-950);
  color: #ffffff;
  font-weight: 700;
}

.plan-view-btn {
  color: var(--espresso-700);
  transition: all 0.2s ease;
}

/* ==========================================================================
   GOOGLE MOBILE STANDARDS & CORE WEB VITALS OPTIMIZATIONS
   Thumb-Zone Ergonomics • 48px Tap Targets • Zero Layout Shift (CLS)
   ========================================================================== */

/* Elimination of 300ms touch delay & iOS tap highlight */
html, body, button, a, input, select, textarea {
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(184, 134, 40, 0.15);
}

/* Fluid Viewport Containment */
body {
  max-width: 100vw;
  overflow-x: hidden;
}

/* iOS Safari 16px Font Threshold: Prevents destructive auto-zoom on focus */
@media (max-width: 768px) {
  input, select, textarea {
    font-size: 16px !important;
  }

  /* Bottom clearance for persistent Mobile Action Bar */
  body {
    padding-bottom: calc(64px + env(safe-area-inset-bottom, 12px));
  }

  /* Enforce Google Lighthouse 44-48px Touch Target Standard */
  button, 
  .btn-bronze, 
  .btn-ghost-arch, 
  .mode-pill,
  .plan-view-btn {
    min-height: 44px;
  }

  .mode-pill {
    padding: 0.5rem 1.1rem;
    font-size: 0.8125rem;
  }

  /* Mobile Drawer Dynamic Viewport Height Support */
  #mobile-drawer {
    height: 100dvh;
    max-height: -webkit-fill-available;
  }

  /* Modal scrolling container responsiveness */
  .arch-modal-content {
    max-height: 88dvh;
    -webkit-overflow-scrolling: touch;
  }

  /* Gallery card heights on narrow phones */
  .gallery-card {
    border-radius: 1rem;
  }

  /* Hotspot pins touch accessibility */
  .plan-hotspot {
    width: 34px;
    height: 34px;
    font-size: 12px;
  }

  /* Hide redundant desktop floating dock on mobile */
  .floating-dock {
    display: none !important;
  }
}

/* Persistent Mobile Thumb-Zone Action Bar */
.mobile-action-bar {
  background: rgba(250, 248, 245, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(212, 198, 175, 0.8);
  box-shadow: 0 -8px 24px rgba(20, 17, 14, 0.08);
}

.mobile-action-bar a,
.mobile-action-bar button {
  min-height: 44px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}