/* ========================================================
   TRUTRUST LUXURY ARCHITECTURAL & CONSTRUCTION DESIGN SYSTEM
   MASTER STYLESHEET — LIGHT & DARK THEMES WITH PERFECT VISIBILITY
   ======================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400;1,600&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Mono:wght@400;700&display=swap');

/* =========================================================================
   1. CSS CUSTOM PROPERTIES & COLOR TOKENS
   ========================================================================= */
:root {
  /* LIGHT THEME (MODERN HEAVY CONSTRUCTION — CRISP WHITE, STEEL SLATE & SAFETY AMBER) */
  --bg-primary: #FFFFFF;
  --surface-primary: #FFFFFF;
  --surface-secondary: #F8FAFC;
  --surface-tertiary: #F1F5F9;
  --text-primary: #0F172A;          /* Deep solid midnight steel (20:1 contrast) */
  --text-secondary: #334155;        /* Industrial slate charcoal (9:1 contrast) */
  --text-muted: #64748B;            /* Steel gray (5:1 contrast) */
  --accent: #EA580C;                /* Vivid Industrial Construction Amber-Orange */
  --accent-hover: #C2410C;
  --accent-light: rgba(234, 88, 12, 0.10);
  --accent-border: #FDBA74;
  --border-color: #E2E8F0;          /* Clean steel divider */
  --border-focus: #EA580C;
  --glass-bg: rgba(255, 255, 255, 0.96);
  --glass-border: rgba(234, 88, 12, 0.25);
  --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
  --card-hover-shadow: 0 16px 36px -4px rgba(15, 23, 42, 0.14);
  --gold-glow: 0 0 25px rgba(234, 88, 12, 0.25);
  --btn-primary-bg: #EA580C;
  --btn-primary-text: #FFFFFF;
  --badge-bg: #FFF7ED;
  --badge-text: #C2410C;
  --badge-border: #FFEDD5;
  --blueprint-line: rgba(15, 23, 42, 0.03);
}

body.theme-dark {
  /* DARK THEME (HIGH-TECH INDUSTRIAL HEAVY STEEL & HIGH-VIS AMBER) */
  --bg-primary: #0B0F19;
  --surface-primary: #151D2C;
  --surface-secondary: #1E293B;
  --surface-tertiary: #27354A;
  --text-primary: #F8FAFC;          /* Clean solid white */
  --text-secondary: #94A3B8;        /* Silver steel */
  --text-muted: #64748B;
  --accent: #F97316;                /* High-vis safety amber orange */
  --accent-hover: #FB923C;
  --accent-light: rgba(249, 115, 22, 0.15);
  --accent-border: #9A3412;
  --border-color: #1E293B;          /* Dark steel border */
  --border-focus: #F97316;
  --glass-bg: rgba(11, 15, 25, 0.92);
  --glass-border: rgba(249, 115, 22, 0.3);
  --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
  --card-hover-shadow: 0 16px 45px rgba(249, 115, 22, 0.2);
  --gold-glow: 0 0 35px rgba(249, 115, 22, 0.35);
  --btn-primary-bg: #F97316;
  --btn-primary-text: #0B0F19;
  --badge-bg: rgba(249, 115, 22, 0.15);
  --badge-text: #FDBA74;
  --badge-border: rgba(249, 115, 22, 0.35);
  --blueprint-line: rgba(248, 250, 252, 0.03);
}

/* =========================================================================
   2. BASE RESET & TYPOGRAPHY
   ========================================================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color 0.35s ease, color 0.35s ease;
  -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* Typography Classes (Modern Bold Architectural) */
.font-serif {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  letter-spacing: -0.025em;
  font-weight: 700;
}
.font-sans {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
}
.font-mono {
  font-family: 'Space Mono', monospace;
}

/* Text Colors */
.text-gold {
  color: var(--accent) !important;
}
.text-gold-gradient {
  background: linear-gradient(135deg, var(--accent) 0%, #FB923C 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Clean Architectural Grid Canvas (No Yellow Grid Lines) */
.bg-architectural-grid {
  background-size: 48px 48px;
  background-image: 
    linear-gradient(to right, var(--blueprint-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--blueprint-line) 1px, transparent 1px);
}

/* Layout Container */
.container-custom {
  width: 100%;
  max-width: 1380px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}
@media (min-width: 768px) {
  .container-custom {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}
@media (min-width: 1280px) {
  .container-custom {
    padding-left: 3.5rem;
    padding-right: 3.5rem;
  }
}

/* =========================================================================
   3. BUTTONS & INTERACTIVE ELEMENTS
   ========================================================================= */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.95rem 2rem;
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  border: 1px solid var(--accent);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.12);
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: skewX(-20deg);
  transition: left 0.75s ease;
}
.btn-primary:hover::after {
  left: 200%;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--gold-glow);
  filter: brightness(1.08);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.95rem 2rem;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
  transform: translateY(-2px);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0;
  background: transparent;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  position: relative;
  text-decoration: none;
  transition: color 0.2s ease;
}
.btn-ghost::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}
.btn-ghost:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}
.btn-ghost:hover {
  color: var(--accent);
}

/* Badges & Pills */
.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background-color: var(--badge-bg);
  border: 1px solid var(--badge-border);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: 'Space Mono', monospace;
  color: var(--badge-text);
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}

/* Monogram Logo */
.brand-monogram {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--accent);
  position: relative;
  transition: transform 0.4s ease;
}
.brand-monogram::after {
  content: '';
  position: absolute;
  top: 3px;
  right: 3px;
  bottom: 3px;
  left: 3px;
  border: 1px solid var(--border-color);
}
.brand-monogram:hover {
  transform: rotate(45deg);
}

/* Glassmorphism Panels & Luxury Cards */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
}

.glass-card {
  background-color: var(--surface-primary);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.glass-card:hover {
  border-color: var(--accent);
  box-shadow: var(--card-hover-shadow);
  transform: translateY(-5px);
}

/* Image Zoom Effect */
.image-zoom-container {
  overflow: hidden;
  position: relative;
}
.image-zoom-target {
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), filter 0.8s ease;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.image-zoom-container:hover .image-zoom-target {
  transform: scale(1.06);
}

/* =========================================================================
   4. NAVIGATION & HEADER STYLES
   ========================================================================= */
header.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  transition: all 0.35s ease;
  padding: 1.1rem 0;
  background-color: var(--glass-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}
header.site-header.scrolled {
  padding: 0.8rem 0;
  background-color: var(--surface-primary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}
body.theme-light header.site-header {
  background-color: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid #E2E8F0;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
}
body.theme-dark header.site-header {
  background-color: rgba(11, 15, 25, 0.94);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.5);
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 0.5rem 0;
  position: relative;
  transition: color 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--accent);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}
.nav-link:hover::after, .nav-link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Nav Dropdown Menu */
.has-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.has-dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: -20px;
  right: -20px;
  height: 20px; /* Invisible bridge to prevent mouse leaving */
}
.mega-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 580px;
  background: var(--surface-primary);
  border: 1px solid var(--border-color);
  border-top: 3px solid var(--accent);
  border-radius: 6px;
  box-shadow: 0 16px 45px -8px rgba(15, 23, 42, 0.16);
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  z-index: 10000;
  pointer-events: none;
}
.has-dropdown:hover .mega-dropdown,
.has-dropdown:focus-within .mega-dropdown,
.has-dropdown.is-active .mega-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.dropdown-grid-link {
  text-decoration: none;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.7rem;
  border-radius: 4px;
  transition: background-color 0.2s ease, transform 0.2s ease;
}
.dropdown-grid-link:hover {
  background-color: var(--surface-secondary);
  transform: translateX(3px);
}
.dropdown-grid-link:hover .dropdown-title {
  color: var(--accent) !important;
}

/* Theme Switcher Button - Hidden from menu */
.theme-toggle-btn {
  display: none !important;
}

/* =========================================================================
   5. INTERACTIVE BEFORE & AFTER COMPARISON SLIDER
   ========================================================================= */
.before-after-box {
  position: relative;
  overflow: hidden;
  user-select: none;
  border: 1px solid var(--border-color);
  aspect-ratio: 16/9;
  background-color: var(--surface-primary);
  box-shadow: var(--card-shadow);
}
.before-after-after-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.before-after-before-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
  width: 50%;
}
.before-after-before-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) contrast(108%);
}
.before-after-handle-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background-color: var(--accent);
  cursor: ew-resize;
  z-index: 30;
}
.before-after-handle-circle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--surface-primary);
  border: 2px solid var(--accent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  cursor: ew-resize;
}

/* =========================================================================
   6. FULLSCREEN IMAGE LIGHTBOX
   ========================================================================= */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 999999;
  background-color: rgba(10, 11, 10, 0.94);
  backdrop-filter: blur(14px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.lightbox-modal.active {
  display: flex;
  animation: fadeIn 0.25s ease;
}
.lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border: 1px solid var(--accent);
  box-shadow: 0 25px 70px rgba(0,0,0,0.8);
}
.lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: none;
  border: 1px solid rgba(255,255,255,0.3);
  color: #FFFFFF;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.25rem;
  transition: all 0.2s ease;
}
.lightbox-close:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* =========================================================================
   7. KEYFRAME ANIMATIONS & UTILITIES
   ========================================================================= */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}
.animate-float {
  animation: floatSlow 5s ease-in-out infinite;
}

@keyframes pulseSubtle {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}
.animate-pulse {
  animation: pulseSubtle 3s infinite ease-in-out;
}

@keyframes liveDot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(234, 88, 12, 0.7); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 8px rgba(234, 88, 12, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(234, 88, 12, 0); }
}
.live-beacon {
  width: 8px;
  height: 8px;
  background-color: var(--accent);
  border-radius: 50%;
  display: inline-block;
  animation: liveDot 2s infinite;
}

@media (max-width: 1023px) {
  .hero-grid {
    grid-template-columns: 1fr !important;
  }
}

/* Form Controls */
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.9rem 1.15rem;
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  background-color: var(--surface-primary);
}

/* Mobile Drawer */
.mobile-nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background-color: var(--bg-primary);
  padding: 6rem 2rem 3rem 2rem;
  overflow-y: auto;
  display: none;
  flex-direction: column;
  justifyContent: space-between;
}
.mobile-nav-drawer.active {
  display: flex;
}

/* Desktop vs Mobile display utilities */
.desktop-only {
  display: none;
}
@media (min-width: 1024px) {
  .desktop-only {
    display: flex !important;
  }
  .mobile-only {
    display: none !important;
  }
}

/* Footer Navigation Link Enhancements */
footer a {
  transition: color 0.2s ease, transform 0.2s ease;
  display: inline-block;
}
footer a:hover {
  color: var(--accent) !important;
  transform: translateX(2px);
}