/* 
   STONECORE SOLUTIONS - STYLESHEET
   Design Theme: Obsidian Dark & Luxury Gold Accents
   Typography: Headings: Montserrat (700/600), Body: Inter (400/500/600)
*/



/* ==========================================
   1. DESIGN SYSTEM VARIABLES
   ========================================== */
:root {
  --color-obsidian: #0b0c10;
  --color-charcoal: #14161b;
  --color-slate: #1f2833;
  --color-gold: #c5a059;
  --color-gold-light: #e5c583;
  --color-gold-dark: #a37f39;
  --color-white: #ffffff;
  --color-text-primary: #f5f5f7;
  --color-text-secondary: #c5c6c7;
  --color-success: #2ec4b6;
  
  --font-headings: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease;
  
  --glass-bg: rgba(20, 22, 27, 0.7);
  --glass-border: rgba(197, 160, 89, 0.15);
  --glass-border-hover: rgba(197, 160, 89, 0.4);
  --glass-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
  
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --border-radius-full: 9999px;
  
  --max-width: 1280px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-obsidian);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-white);
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

section {
  padding: 100px 0;
  position: relative;
}

.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Common Background Utilities */
.bg-charcoal {
  background-color: var(--color-charcoal);
}

.bg-obsidian {
  background-color: var(--color-obsidian);
}

/* Section Header Utility */
.section-header {
  text-align: center;
  margin-bottom: 60px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-tagline {
  color: var(--color-gold);
  font-size: 0.9rem;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.2em;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 16px;
  position: relative;
}

.section-title span {
  color: var(--color-gold);
  background: linear-gradient(135deg, var(--color-white) 30%, var(--color-gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
}

/* ==========================================
   3. BUTTONS & ACTIONS
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}

.btn-gold {
  background-color: var(--color-gold);
  color: var(--color-obsidian);
  box-shadow: 0 4px 15px rgba(197, 160, 89, 0.3);
}

.btn-gold:hover {
  background-color: var(--color-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(197, 160, 89, 0.5);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.btn-outline:hover {
  background-color: var(--color-gold);
  color: var(--color-obsidian);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(197, 160, 89, 0.2);
}

.btn-white {
  background-color: var(--color-white);
  color: var(--color-obsidian);
}

.btn-white:hover {
  background-color: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
}

.btn-icon {
  margin-left: 8px;
  transition: var(--transition-fast);
}

.btn:hover .btn-icon {
  transform: translateX(4px);
}

/* ==========================================
   4. NAVIGATION HEADER
   ========================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(11, 12, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition-smooth);
}

header.scrolled {
  background-color: var(--color-obsidian);
  padding: 8px 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-headings);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  color: var(--color-white);
}

.logo span {
  color: var(--color-gold);
}

/* SVG Logo Monogram Styling */
.logo-monogram {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.logo a:hover .logo-monogram,
.footer-logo:hover .logo-monogram {
  transform: rotate(15deg) scale(1.1);
}

.logo-monogram polygon {
  transition: fill 0.3s ease, stroke-width 0.3s ease, filter 0.3s ease;
}

.logo-monogram path {
  transition: stroke-width 0.3s ease, filter 0.3s ease;
}

.logo a:hover .logo-monogram polygon,
.footer-logo:hover .logo-monogram polygon {
  filter: drop-shadow(0 0 4px rgba(229, 197, 131, 0.6));
}

.logo a:hover .logo-monogram path,
.footer-logo:hover .logo-monogram path {
  filter: drop-shadow(0 0 3px rgba(229, 197, 131, 0.4));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-links a {
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  position: relative;
  padding: 6px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-gold);
  transition: var(--transition-smooth);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-white);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Products Dropdown Styling */
.nav-dropdown {
  position: relative;
}

.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.dropdown-toggle i {
  font-size: 0.7rem;
  transition: transform 0.3s ease;
}

.nav-dropdown:hover .dropdown-toggle i {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background-color: var(--color-charcoal);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--glass-shadow);
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
  z-index: 1002;
  padding: 8px 0;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

.nav-dropdown-menu a::after {
  display: none !important;
}

.nav-dropdown-menu a:hover {
  color: var(--color-white);
  background-color: rgba(197, 160, 89, 0.1);
  padding-left: 24px;
}

@media screen and (max-width: 768px) {
  .nav-dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    background-color: rgba(0, 0, 0, 0.15);
    border: none;
    box-shadow: none;
    display: none;
    min-width: auto;
    width: 100%;
    padding: 5px 0;
  }
  
  .nav-dropdown.active-mobile .nav-dropdown-menu {
    display: block;
  }
  
  .nav-dropdown-menu a {
    text-align: center;
    padding: 8px 0;
    font-size: 0.72rem;
  }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Language Switcher */
.lang-selector {
  position: relative;
  cursor: pointer;
}

.lang-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text-primary);
  padding: 6px 12px;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-headings);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
  transition: var(--transition-fast);
}

.lang-btn:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background-color: var(--color-charcoal);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--glass-shadow);
  display: none;
  z-index: 1001;
  min-width: 120px;
  overflow: hidden;
}

.lang-dropdown.active {
  display: block;
}

.lang-option {
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: left;
}

.lang-option:hover {
  background-color: rgba(197, 160, 89, 0.1);
  color: var(--color-white);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 24px;
  position: relative;
  z-index: 1001;
}

.mobile-nav-toggle span {
  display: block;
  position: absolute;
  height: 2px;
  width: 100%;
  background: var(--color-text-primary);
  border-radius: 9px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: .25s ease-in-out;
}

.mobile-nav-toggle span:nth-child(1) { top: 0px; }
.mobile-nav-toggle span:nth-child(2) { top: 10px; }
.mobile-nav-toggle span:nth-child(3) { top: 20px; }

.mobile-nav-toggle.open span:nth-child(1) {
  top: 10px;
  transform: rotate(135deg);
}
.mobile-nav-toggle.open span:nth-child(2) {
  opacity: 0;
  left: -60px;
}
.mobile-nav-toggle.open span:nth-child(3) {
  top: 10px;
  transform: rotate(-135deg);
}

/* ==========================================
   5. HERO SECTION
   ========================================== */
.hero {
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0;
  text-align: center;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  animation: slowZoom 25s infinite alternate ease-in-out;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(11, 12, 16, 0.4) 0%, rgba(11, 12, 16, 0.95) 90%),
              linear-gradient(0deg, var(--color-obsidian) 0%, rgba(11, 12, 16, 0.2) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 900px;
  padding: 0 20px;
  margin-top: 60px;
}

.hero-tagline {
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 24px;
  display: inline-block;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s forwards 0.2s;
}

.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s forwards 0.4s;
  background: linear-gradient(135deg, var(--color-white) 40%, var(--color-gold-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto 40px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1.2s forwards 0.6s;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1.4s forwards 0.8s;
}

/* ==========================================
   6. GLASSMORPHIC CARDS & SECTIONS
   ========================================== */
.glass-card {
  background-color: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: var(--transition-smooth);
  overflow: hidden;
}

.glass-card:hover {
  transform: translateY(-8px);
  border-color: var(--glass-border-hover);
  box-shadow: 0 20px 40px rgba(197, 160, 89, 0.1);
}

/* Featured Stone Categories Grid */
.stone-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stone-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.stone-img-container {
  height: 240px;
  overflow: hidden;
  position: relative;
}

.stone-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.stone-card:hover .stone-img-container img {
  transform: scale(1.1);
}

.stone-card-content {
  padding: 30px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.stone-card h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--color-white);
}

.stone-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
  flex-grow: 1;
}

.stone-card .card-link {
  color: var(--color-gold);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}

.stone-card .card-link i {
  transition: var(--transition-fast);
}

.stone-card:hover .card-link i {
  transform: translateX(4px);
}

/* ==========================================
   7. WHY CHOOSE US
   ========================================== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.why-item {
  padding: 40px 30px;
  text-align: center;
}

.why-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--border-radius-full);
  background: rgba(197, 160, 89, 0.1);
  border: 1px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 1.5rem;
  color: var(--color-gold);
  transition: var(--transition-smooth);
}

.why-item:hover .why-icon {
  background: var(--color-gold);
  color: var(--color-obsidian);
  box-shadow: 0 0 20px rgba(197, 160, 89, 0.4);
}

.why-item h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.why-item p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* ==========================================
   8. INTERACTIVE WORLD MAP & MARKETS
   ========================================== */
.map-section {
  overflow: hidden;
}

.map-container {
  position: relative;
  background-color: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  margin-bottom: 40px;
}

/* Stylized Map SVG Styles */
.map-svg {
  width: 100%;
  height: auto;
  max-height: 500px;
}

.map-svg path {
  fill: #1d2127;
  stroke: var(--color-obsidian);
  stroke-width: 0.5;
  transition: fill 0.3s ease;
}

.map-svg .active-market path,
.map-svg path.active-market {
  fill: rgba(197, 160, 89, 0.15);
  stroke: rgba(197, 160, 89, 0.4);
  stroke-width: 0.75;
}

.map-svg .active-market:hover path,
.map-svg path.active-market:hover,
.map-svg .active-market.hovered path,
.map-svg path.active-market.hovered {
  fill: rgba(197, 160, 89, 0.5) !important;
  stroke: var(--color-gold);
  cursor: pointer;
}

/* Pulsing Hotspots (SVG elements) */
g.map-pin {
  cursor: pointer;
}

g.map-pin circle.core {
  fill: var(--color-gold);
  transform-origin: center;
  transition: transform 0.3s ease, fill 0.3s ease;
}

g.map-pin circle.pulse {
  transform-origin: center;
  animation: svgPulse 2s infinite ease-out;
}

g.map-pin.hq circle.core {
  fill: var(--color-white);
}

g.map-pin.hq circle.pulse {
  stroke: var(--color-white);
}

g.map-pin:hover circle.core {
  transform: scale(1.3);
  fill: var(--color-white);
}

@keyframes svgPulse {
  0% {
    r: 4px;
    opacity: 1;
    stroke-width: 2;
  }
  100% {
    r: 16px;
    opacity: 0;
    stroke-width: 0.5;
  }
}

.map-legend {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 30px;
  margin-top: 30px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-headings);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.legend-color {
  width: 16px;
  height: 16px;
  border-radius: 50%;
}

.legend-color.hq {
  background-color: var(--color-white);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

.legend-color.market {
  background-color: var(--color-gold);
  box-shadow: 0 0 10px rgba(197, 160, 89, 0.8);
}

/* Tooltip */
.map-tooltip {
  position: absolute;
  background-color: var(--color-charcoal);
  border: 1px solid var(--color-gold);
  padding: 10px 15px;
  border-radius: var(--border-radius-sm);
  color: var(--color-white);
  font-family: var(--font-headings);
  font-size: 0.8rem;
  font-weight: 600;
  pointer-events: none;
  z-index: 20;
  display: none;
  transform: translate(-50%, -120%);
  box-shadow: var(--glass-shadow);
}

/* ==========================================
   9. QUICK INQUIRY FORM
   ========================================== */
.inquiry-split {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}

.inquiry-info h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.inquiry-info p {
  color: var(--color-text-secondary);
  margin-bottom: 30px;
}

.inquiry-feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.inquiry-feature i {
  color: var(--color-gold);
  font-size: 1.2rem;
  margin-top: 4px;
}

.inquiry-feature h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.inquiry-feature p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.inquiry-card {
  padding: 40px;
}

.form-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 20px;
  position: relative;
}

.form-label {
  display: block;
  font-family: var(--font-headings);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.form-input {
  width: 100%;
  background-color: rgba(11, 12, 16, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 14px 18px;
  border-radius: var(--border-radius-sm);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 10px rgba(197, 160, 89, 0.1);
  background-color: rgba(11, 12, 16, 0.9);
}

textarea.form-input {
  height: 120px;
  resize: vertical;
}

/* ==========================================
   10. ONYX SPECIAL BACKLIGHT TOGGLE EFFECT
   ========================================== */
.backlight-showcase {
  background-color: var(--color-charcoal);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-lg);
  padding: 40px;
  margin-bottom: 60px;
}

.backlight-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 50px;
  align-items: center;
}

.backlight-display-wrapper {
  position: relative;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.backlight-display {
  position: relative;
  width: 100%;
  height: 400px;
  background-size: cover;
  background-position: center;
  transition: filter 0.5s ease;
}

/* Glowing Backlight Overlay Layer */
.backlight-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(255, 175, 50, 0.7) 0%, rgba(197, 160, 89, 0.4) 50%, rgba(0, 0, 0, 0) 90%);
  mix-blend-mode: color-dodge;
  opacity: 0;
  transition: opacity 0.6s ease-in-out;
  pointer-events: none;
  z-index: 2;
}

.backlight-slab-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 3;
  mix-blend-mode: normal;
  transition: filter 0.6s ease;
}

/* Backlit ON States */
.backlight-display-wrapper.lit .backlight-glow {
  opacity: 1;
}

.backlight-display-wrapper.lit .backlight-slab-img {
  filter: saturate(1.4) brightness(1.25) contrast(1.1);
  /* Make dark veins pop and allow gold glow to pierce through */
}

/* Interactive Backlight Controls */
.backlight-controls {
  padding: 20px;
}

.backlight-toggle-btn {
  margin-bottom: 30px;
  background: var(--color-obsidian);
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
  padding: 15px 30px;
  font-family: var(--font-headings);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-smooth);
}

.backlight-toggle-btn.lit {
  background: var(--color-gold);
  color: var(--color-obsidian);
  box-shadow: 0 0 25px rgba(197, 160, 89, 0.5);
}

.backlight-indicator {
  display: inline-block;
  width: 10px;
  height: 10px;
  background-color: #ff4d4d;
  border-radius: 50%;
  box-shadow: 0 0 8px #ff4d4d;
  transition: var(--transition-fast);
}

.backlight-toggle-btn.lit .backlight-indicator {
  background-color: #39ff14;
  box-shadow: 0 0 10px #39ff14;
}

/* ==========================================
   11. BEFORE-AFTER INSTALLATION SLIDER
   ========================================== */
.comparison-slider-wrapper {
  position: relative;
  width: 100%;
  height: 450px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.comparison-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.comparison-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.comparison-before {
  z-index: 1;
}

.comparison-after {
  z-index: 2;
  width: 50%; /* JS will control this */
  overflow: hidden;
}

/* Prevent image squeezing when container width shrinks */
.comparison-after img {
  width: 100%;
  max-width: none;
  height: 100%;
}

/* Slider Controller Drag Bar */
.comparison-handle {
  position: absolute;
  top: 0;
  left: 50%;
  width: 4px;
  height: 100%;
  background-color: var(--color-gold);
  z-index: 3;
  cursor: ew-resize;
  transform: translateX(-50%);
  box-shadow: 0 0 10px rgba(197, 160, 89, 0.5);
}

.comparison-handle::before {
  content: '\f07e'; /* FontAwesome exchange / drag icon */
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  position: absolute;
  top: 50%;
  left: 50%;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-gold);
  border: 2px solid var(--color-obsidian);
  color: var(--color-obsidian);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translate(-50%, -50%);
  font-size: 14px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.comparison-label {
  position: absolute;
  bottom: 20px;
  background-color: rgba(11, 12, 16, 0.8);
  color: var(--color-white);
  padding: 6px 12px;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-headings);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  z-index: 2;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.comparison-before .comparison-label {
  right: 20px;
}

.comparison-after .comparison-label {
  left: 20px;
}

/* ==========================================
   12. TECHNICAL SPECIFICATIONS & TABLES
   ========================================== */
.spec-table-container {
  overflow-x: auto;
  margin-top: 30px;
  background-color: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  padding: 20px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.spec-table th, .spec-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.95rem;
}

.spec-table th {
  font-family: var(--font-headings);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gold);
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

/* ==========================================
   13. PORTFOLIO SHOWCASE (GALLERY)
   ========================================== */
.gallery-filter-bar {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--color-charcoal);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-secondary);
  padding: 10px 24px;
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-obsidian);
  box-shadow: 0 4px 15px rgba(197, 160, 89, 0.3);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.gallery-item {
  position: relative;
  height: 350px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
}

.gallery-item.hidden {
  display: none;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.gallery-item-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(0deg, rgba(11, 12, 16, 0.9) 0%, rgba(11, 12, 16, 0.2) 70%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px;
  opacity: 0;
  transition: var(--transition-smooth);
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 1;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-item-tag {
  color: var(--color-gold);
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.gallery-item-title {
  font-size: 1.3rem;
  margin-bottom: 6px;
}

.gallery-item-desc {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

/* ==========================================
   14. SYSTEM PAGES SPECIFICS
   ========================================== */

/* About Statistics counters */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 60px;
}

.stat-card {
  padding: 50px 30px;
  text-align: center;
}

.stat-number {
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-family: var(--font-headings);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

/* Export Steps Flow */
.process-flow {
  display: flex;
  flex-direction: column;
  gap: 50px;
  position: relative;
  margin-top: 50px;
}

.process-flow::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 40px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-gold) 0%, rgba(197, 160, 89, 0.1) 100%);
}

.process-step {
  display: grid;
  grid-template-columns: 80px 1fr 1.2fr;
  gap: 40px;
  position: relative;
  z-index: 2;
}

.step-num {
  width: 80px;
  height: 80px;
  border-radius: var(--border-radius-md);
  background-color: var(--color-charcoal);
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  font-family: var(--font-headings);
  font-size: 1.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glass-shadow);
}

.step-content {
  padding: 20px;
}

.step-content h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--color-gold);
}

.step-content p {
  color: var(--color-text-secondary);
}

.step-img-wrapper {
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: var(--glass-shadow);
  height: 220px;
}

.step-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================
   15. STANDARD FAQ ACCORDIONS
   ========================================== */
.faq-grid {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 16px;
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  background-color: var(--glass-bg);
  overflow: hidden;
}

.faq-header {
  padding: 20px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.faq-header:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.faq-question {
  font-family: var(--font-headings);
  font-weight: 600;
  font-size: 1.1rem;
}

.faq-toggle-icon {
  font-size: 1.2rem;
  color: var(--color-gold);
  transition: transform 0.4s ease;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-answer {
  padding: 0 30px 24px;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* ==========================================
   16. CUSTOMER TESTIMONIALS CAROUSEL
   ========================================== */
.testimonial-carousel {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  overflow: hidden;
}

.testimonial-track {
  display: flex;
  transition: transform 0.5s ease-in-out;
}

.testimonial-slide {
  min-width: 100%;
  padding: 40px;
  box-sizing: border-box;
  text-align: center;
}

.quote-icon {
  font-size: 3rem;
  color: rgba(197, 160, 89, 0.2);
  margin-bottom: 20px;
}

.testimonial-text {
  font-size: 1.3rem;
  color: var(--color-text-primary);
  font-style: italic;
  margin-bottom: 30px;
  line-height: 1.6;
}

.testimonial-author h4 {
  font-size: 1.1rem;
  margin-bottom: 4px;
  color: var(--color-white);
}

.testimonial-author p {
  font-size: 0.85rem;
  color: var(--color-gold);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.carousel-indicators {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
}

.indicator-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.2);
  cursor: pointer;
  transition: var(--transition-fast);
}

.indicator-dot.active {
  background-color: var(--color-gold);
  transform: scale(1.2);
}

/* ==========================================
   17. POPUP INQUIRY MODAL (REQUEST QUOTE)
   ========================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(11, 12, 16, 0.9);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  width: 90%;
  max-width: 650px;
  background-color: var(--color-charcoal);
  border: 1px solid var(--color-gold);
  border-radius: var(--border-radius-md);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.8);
  position: relative;
  transform: scale(0.9);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-overlay.active .modal-container {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.modal-close-btn:hover {
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.05);
}

.modal-content {
  padding: 40px;
}

.modal-header {
  margin-bottom: 30px;
  text-align: center;
}

.modal-header h2 {
  font-size: 2rem;
  margin-bottom: 8px;
  color: var(--color-gold);
}

.modal-header p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* Success State Widget */
.form-success-message {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form-success-message i {
  font-size: 4rem;
  color: var(--color-success);
  margin-bottom: 20px;
  animation: pulseSuccess 1.5s infinite alternate;
}

.form-success-message h3 {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.form-success-message p {
  color: var(--color-text-secondary);
  max-width: 450px;
  margin: 0 auto;
}

/* ==========================================
   18. FLOATING WHATSAPP BUTTON & CONTACT
   ========================================== */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background-color: #25d366;
  color: var(--color-white);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: var(--transition-smooth);
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.whatsapp-float:hover {
  transform: translateY(-5px) rotate(360deg);
  box-shadow: 0 15px 30px rgba(37, 211, 102, 0.6);
  background-color: #20ba5a;
}

.whatsapp-float::after {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  width: 68px;
  height: 68px;
  border-radius: var(--border-radius-full);
  border: 2px solid #25d366;
  opacity: 0;
  animation: pulseWhatsApp 2s infinite ease-out;
}

/* Contact page Split */
.contact-split {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 50px;
}

.contact-card {
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.contact-item-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--border-radius-md);
  background-color: rgba(197, 160, 89, 0.1);
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item-details h4 {
  font-size: 1rem;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gold-light);
}

.contact-item-details p, .contact-item-details a {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.contact-item-details a:hover {
  color: var(--color-white);
}

/* Google Map Mockup Container */
.map-mockup-wrapper {
  height: 350px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  position: relative;
}

.map-mockup-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.map-mockup-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(11, 12, 16, 0.7);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
  text-align: center;
}

.map-mockup-overlay h4 {
  font-size: 1.3rem;
  margin-bottom: 8px;
  color: var(--color-white);
}

.map-mockup-overlay p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

/* ==========================================
   19. FOOTER SECTION
   ========================================== */
footer {
  background-color: var(--color-charcoal);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 80px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-about .footer-logo {
  font-family: var(--font-headings);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-white);
  margin-bottom: 20px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.footer-about .footer-logo span {
  color: var(--color-gold);
}

.footer-about p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.footer-socials {
  display: flex;
  gap: 12px;
}

.social-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-sm);
  background-color: var(--color-obsidian);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.social-icon:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background-color: rgba(197, 160, 89, 0.1);
  transform: translateY(-2px);
}

.footer-column h3 {
  font-size: 1.1rem;
  margin-bottom: 24px;
  position: relative;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-white);
}

.footer-column h3::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--color-gold);
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-gold);
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.footer-contact i {
  color: var(--color-gold);
  margin-top: 4px;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-bottom p {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.footer-legal-links {
  display: flex;
  gap: 20px;
}

.footer-legal-links a {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.footer-legal-links a:hover {
  color: var(--color-gold);
}

/* ==========================================
   20. RESPONSIVE MEDIA QUERIES
   ========================================== */
@media screen and (max-width: 1024px) {
  .stone-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero h1 {
    font-size: 3rem;
  }
  
  .inquiry-split, .contact-split {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .backlight-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media screen and (max-width: 768px) {
  section {
    padding: 60px 0;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero p {
    font-size: 1.05rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    gap: 12px;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .mobile-nav-toggle {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background-color: var(--color-charcoal);
    border-left: 1px solid var(--color-gold);
    flex-direction: column;
    justify-content: center;
    gap: 30px;
    z-index: 1000;
    transition: var(--transition-smooth);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.8);
  }
  
  .nav-links.open {
    right: 0;
  }
  
  .nav-actions {
    margin-right: 40px;
  }
  
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .process-step {
    grid-template-columns: 1fr;
    gap: 20px;
    text-align: center;
  }
  
  .process-flow::before {
    display: none;
  }
  
  .step-num {
    margin: 0 auto;
  }
  
  .map-container {
    padding: 20px 10px;
  }
  
  .map-pin {
    width: 8px;
    height: 8px;
  }
  
  .map-pin::after {
    width: 16px;
    height: 16px;
    top: -4px;
    left: -4px;
  }
}

@media screen and (max-width: 480px) {
  .stone-grid, .why-grid, .footer-grid, .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .testimonial-slide {
    padding: 20px 10px;
  }
  
  .testimonial-text {
    font-size: 1.1rem;
  }
  
  .modal-content {
    padding: 30px 15px;
  }
  
  .form-group-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

/* ==========================================
   21. ANIMATION KEYFRAMES
   ========================================== */
@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slowZoom {
  from { transform: scale(1.05) translate(0, 0); }
  to { transform: scale(1.15) translate(-1%, -1%); }
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}

@keyframes pulseWhatsApp {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { opacity: 0.4; }
  100% { transform: scale(1.2); opacity: 0; }
}

@keyframes pulseSuccess {
  from { transform: scale(0.95); }
  to { transform: scale(1.05); }
}