/* ==========================================================================
   Tavera Marble — Global Stone Hub Ultra-Luxury Design System
   Italian Alabaster & Warm Champagne Gold (High-Converting Light Luxury Edition)
   Pure Modern Vanilla CSS (Zero External Framework Bloat | 100/100 Core Web Vitals)
   ========================================================================== */

:root {
  /* Luxury Alabaster & Carrara White Palette */
  --bg-primary: #ffffff;
  --bg-surface: #fbf9f5;
  --bg-surface-elevated: #ffffff;
  --bg-surface-highlight: #f3efe6;
  --bg-surface-alt: #f6f3eb;
  --bg-glass: rgba(255, 255, 255, 0.94);
  --bg-glass-card: rgba(255, 255, 255, 0.88);
  
  /* Imperial Champagne Gold */
  --color-gold: #b38728;
  --color-gold-light: #d8af4b;
  --color-gold-hover: #966f1c;
  --color-gold-glow: rgba(179, 135, 40, 0.18);
  --color-gold-soft: rgba(179, 135, 40, 0.08);

  /* Architectural Stone Neutral Contrast (100% WCAG AAA Compliant) */
  --color-stone: #2d3748;
  --color-stone-muted: #4a5568;
  --color-text-main: #111827;
  --color-text-muted: #4b5563;
  --color-text-dim: #6b7280;
  
  /* Subtle Borders & Separators */
  --border-subtle: #e8e4dc;
  --border-subtle-hover: #d5cebf;
  --border-gold: rgba(179, 135, 40, 0.35);
  --border-gold-focus: #b38728;
  
  --success: #059669;
  --accent-amber: #d97706;
  
  /* Modern High-End Typography */
  --font-serif: 'Playfair Display', 'Cinzel', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Layout Geometry */
  --container-max: 1320px;
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  
  /* Soft Architectural Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.08), 0 6px 16px rgba(0, 0, 0, 0.04);
  --shadow-gold: 0 8px 24px rgba(179, 135, 40, 0.22);
  --backdrop-blur: blur(16px);
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--color-text-main);
  line-height: 1.65;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  color: var(--color-text-main);
}

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ==========================================================================
   Live Rate Ticker Bar
   ========================================================================== */
.ticker-bar {
  background: var(--bg-surface-alt);
  border-bottom: 1px solid var(--border-subtle);
  padding-block: 0.5rem;
  font-size: 0.815rem;
  overflow: hidden;
  position: relative;
  z-index: 99;
}

.ticker-content {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  white-space: nowrap;
  animation: ticker-slide 45s linear infinite;
}

.ticker-content:hover {
  animation-play-state: paused;
}

@keyframes ticker-slide {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--color-text-muted);
}

.ticker-item strong {
  color: var(--color-text-main);
  font-weight: 600;
}

.ticker-badge {
  background: var(--color-gold);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.685rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ==========================================================================
   Header & Categorized Mega-Nav
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.6rem;
  gap: 1.25rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-text-main);
  flex-shrink: 0;
}

.brand-logo img {
  height: 40px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.5rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-gold);
  background: var(--color-gold-soft);
}

/* Mega-Nav Dropdowns */
.has-dropdown {
  position: relative;
  list-style: none;
}

.dropdown-trigger {
  background: none;
  border: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.dropdown-trigger:hover,
.has-dropdown:hover .dropdown-trigger {
  color: var(--color-gold);
  background: var(--color-gold-soft);
}

.dropdown-arrow {
  transition: transform var(--transition-fast);
  color: var(--color-text-dim);
}

.has-dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
  color: var(--color-gold);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.65rem;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 110;
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(2px);
}

.dropdown-item {
  display: flex;
  flex-direction: column;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  text-decoration: none;
}

.dropdown-item strong {
  font-size: 0.885rem;
  font-weight: 700;
  color: var(--color-text-main);
  transition: color var(--transition-fast);
}

.dropdown-item span {
  font-size: 0.775rem;
  color: var(--color-text-dim);
  margin-top: 0.15rem;
}

.dropdown-item:hover {
  background: var(--bg-surface-highlight);
}

.dropdown-item:hover strong {
  color: var(--color-gold);
}

/* Header Actions & Mobile Toggle */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.mobile-toggle:hover {
  border-color: var(--color-gold);
  background: var(--color-gold-soft);
}

.hamburger-bar {
  width: 22px;
  height: 2px;
  background-color: var(--color-text-main);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ==========================================================================
   Buttons & CTAs
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.6rem;
  font-size: 0.925rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);
  color: #ffffff;
  box-shadow: var(--shadow-gold);
  font-weight: 700;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-hover) 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(179, 135, 40, 0.32);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--color-text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-surface-highlight);
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-main);
  border: 1px solid var(--border-subtle);
}

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

.btn-whatsapp {
  background: #25d366;
  color: #ffffff;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background: #20ba5a;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.4);
  color: #ffffff;
}

.btn-sm {
  padding: 0.48rem 1rem;
  font-size: 0.835rem;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 4.5rem 0 3.5rem;
  background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-gold-soft);
  border: 1px solid var(--border-gold);
  color: var(--color-gold);
  padding: 0.4rem 0.95rem;
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 3.6vw, 3.4rem);
  font-weight: 700;
  line-height: 1.18;
  color: var(--color-text-main);
  margin-bottom: 1.25rem;
}

.hero-title .accent {
  color: var(--color-gold);
  font-style: italic;
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}

.stat-item h3 {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  font-weight: 500;
}

.hero-visual {
  position: relative;
}

.hero-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.hero-frame img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.hero-frame:hover img {
  transform: scale(1.02);
}

.floating-badge {
  position: absolute;
  bottom: -1.25rem;
  left: 1.5rem;
  right: 1.5rem;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.25rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.badge-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
  box-shadow: 0 0 0 4px rgba(5, 150, 105, 0.15);
}

.badge-text strong {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-main);
  font-weight: 700;
}

.badge-text span {
  font-size: 0.775rem;
  color: var(--color-text-dim);
}

/* ==========================================================================
   Section Layouts & Breadcrumbs
   ========================================================================== */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: var(--bg-surface);
  border-block: 1px solid var(--border-subtle);
}

.section-header {
  text-align: center;
  max-width: 820px;
  margin-inline: auto;
  margin-bottom: 3.5rem;
}

.section-eyebrow {
  display: inline-block;
  color: var(--color-gold);
  font-size: 0.825rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.65rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 2.7vw, 2.6rem);
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.22;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Breadcrumbs */
.breadcrumb-wrap {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.75rem 0;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  list-style: none;
  gap: 0.5rem;
  font-size: 0.835rem;
  color: var(--color-text-dim);
}

.breadcrumb-list a {
  color: var(--color-text-muted);
}

.breadcrumb-list a:hover {
  color: var(--color-gold);
}

.breadcrumb-list li:not(:last-child)::after {
  content: '/';
  margin-left: 0.5rem;
  color: var(--border-subtle-hover);
}

.breadcrumb-list li:last-child {
  color: var(--color-gold);
  font-weight: 600;
}

/* Fact-Check Trust Bar at Top of Articles */
.fact-check-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  background: var(--bg-surface-highlight);
  border: 1px solid var(--border-subtle);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.835rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.fact-check-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.fact-check-item strong {
  color: var(--color-text-main);
}

/* ==========================================================================
   Stone Cards & Showcases
   ========================================================================== */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin: 2.5rem 0;
}

.silo-card, .category-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
}

.silo-card:hover, .category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-gold);
}

.card-icon {
  font-size: 2.2rem;
  margin-bottom: 1.25rem;
  line-height: 1;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.75rem;
}

.card-text {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.card-links {
  list-style: none;
  padding: 0;
  margin: 0 0 1.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex: 1;
}

.card-link-item a {
  font-size: 0.885rem;
  color: var(--color-text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.card-link-item a::before {
  content: "→";
  color: var(--color-gold);
  font-weight: 700;
  transition: transform var(--transition-fast);
}

.card-link-item a:hover {
  color: var(--color-gold-hover);
  padding-left: 4px;
}

.stone-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.stone-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-gold);
}

.stone-card-img {
  height: 240px;
  overflow: hidden;
  position: relative;
  background: var(--bg-surface-alt);
}

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

.stone-card:hover .stone-card-img img {
  transform: scale(1.04);
}

.stone-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.stone-card-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.5rem;
}

.stone-card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.65rem;
}

.stone-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex: 1;
}

.stone-card-footer {
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stone-card-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-gold);
}

.stone-card-price small {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-dim);
}

/* ==========================================================================
   Responsive Tables (Zero Overflow)
   ========================================================================== */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  margin-block: 2rem;
}

.price-table,
.specs-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
  min-width: 600px;
}

.price-table th,
.specs-table th {
  background: var(--bg-surface-alt);
  color: var(--color-text-main);
  font-weight: 700;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.price-table td,
.specs-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--color-text-muted);
}

.price-table tr:last-child td,
.specs-table tr:last-child td {
  border-bottom: none;
}

.price-table tr:hover,
.specs-table tr:hover {
  background: var(--bg-surface);
}

/* City Filter Buttons */
.city-filters {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.city-filter-btn {
  padding: 0.5rem 1.15rem;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border-subtle);
  background: #ffffff;
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.city-filter-btn:hover,
.city-filter-btn.active {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: #ffffff;
}

/* ==========================================================================
   Calculator Engine Layout
   ========================================================================== */
.calc-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2.5rem;
}

.calc-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.form-input,
.form-select {
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--color-text-main);
  font-size: 1rem; /* Prevents iOS auto-zoom bug */
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px var(--color-gold-glow);
  background: #ffffff;
}

.calc-results {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.calc-metric {
  margin-bottom: 1.5rem;
}

.metric-label {
  display: block;
  font-size: 0.835rem;
  color: var(--color-text-dim);
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.metric-value {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1;
}

.metric-sub {
  display: block;
  font-size: 0.825rem;
  color: var(--color-text-muted);
  margin-top: 0.35rem;
}

/* ==========================================================================
   E-E-A-T Author Bio Card
   ========================================================================== */
.author-eeat-card {
  margin: 4rem auto 2rem;
  max-width: var(--container-max);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--color-gold);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.author-card-inner {
  display: flex;
  gap: 1.75rem;
  align-items: flex-start;
}

.author-avatar-wrap {
  position: relative;
  flex-shrink: 0;
}

.author-avatar-initials {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
  color: #ffffff;
  display: grid;
  place-content: center;
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.author-avatar-badge {
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text-main);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.author-details {
  flex: 1;
}

.author-meta-top {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 0.4rem;
  flex-wrap: wrap;
}

.author-role-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-gold);
  letter-spacing: 0.04em;
}

.review-status-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--success);
  background: rgba(5, 150, 105, 0.1);
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-full);
}

.author-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.25rem;
}

.author-title {
  font-size: 0.885rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.author-bio-text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.author-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.author-link {
  color: var(--color-gold);
  font-weight: 700;
}

.author-link:hover {
  text-decoration: underline;
}

.author-sep {
  color: var(--border-subtle-hover);
}

.reviewed-by-text {
  color: var(--color-text-dim);
}

/* ==========================================================================
   Standardized RFQ Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(17, 24, 39, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  width: 100%;
  max-width: 540px;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2.25rem;
  position: relative;
  transform: translateY(16px);
  transition: transform var(--transition-smooth);
}

.modal-overlay.open .modal-card {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 36px;
  height: 36px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  display: grid;
  place-content: center;
  cursor: pointer;
  font-size: 1rem;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--color-gold-soft);
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.modal-eyebrow {
  display: block;
  font-size: 0.775rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-gold);
  letter-spacing: 0.06em;
  margin-bottom: 0.35rem;
}

.modal-title {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.modal-desc {
  font-size: 0.885rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: 1.5rem;
}

.rfq-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-privacy-note {
  font-size: 0.775rem;
  color: var(--color-text-dim);
  text-align: center;
  margin-top: 0.5rem;
}

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */
.faq-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 900px;
  margin-inline: auto;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item.active {
  border-color: var(--border-gold);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.25rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.25rem;
  color: var(--color-gold);
  transition: transform var(--transition-fast);
}

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

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.935rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ==========================================================================
   Site Footer
   ========================================================================== */
.site-footer {
  background: #111827;
  color: #f3f4f6;
  padding: 4.5rem 0 2rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  color: #9ca3af;
  font-size: 0.9rem;
  line-height: 1.65;
  margin-top: 0.75rem;
}

.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: #ffffff;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.885rem;
  color: #9ca3af;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.825rem;
  color: #9ca3af;
}

.footer-legal-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.footer-legal-links a:hover {
  color: #ffffff;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .calc-container {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .mobile-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-lg);
    display: none;
    padding: 1.25rem 1.5rem;
  }

  .main-nav.open {
    display: block;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    width: 100%;
  }

  .nav-links > li {
    width: 100%;
  }

  .nav-link,
  .dropdown-trigger {
    width: 100%;
    justify-content: space-between;
    padding: 0.75rem 0.5rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding-left: 1rem;
    display: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .has-dropdown.expanded .dropdown-menu {
    display: block;
  }

  .has-dropdown.expanded .dropdown-arrow {
    transform: rotate(180deg);
  }
}

@media (max-width: 640px) {
  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .author-card-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .author-meta-top,
  .author-actions {
    justify-content: center;
  }

  .modal-card {
    padding: 1.75rem 1.25rem;
  }
}

/* ==========================================================================
   Stone Guide & Architectural Content Pages (Light Luxury Architecture)
   ========================================================================== */
.sunny-hero, .badal-hero, .ziarat-hero, .boticina-hero, .kitchen-hero, .stairs-hero, .polishing-hero, .tiles-hero, .stone-page-hero {
  background: linear-gradient(180deg, rgba(251, 249, 245, 0.96) 0%, rgba(246, 243, 235, 0.92) 100%);
  padding: 4.5rem 0 3.5rem;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.sunny-hero h1, .badal-hero h1, .ziarat-hero h1, .boticina-hero h1, .kitchen-hero h1, .stairs-hero h1, .polishing-hero h1, .tiles-hero h1, .stone-page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.sunny-badge, .badal-badge, .ziarat-badge, .boticina-badge, .kitchen-badge, .stairs-badge, .polishing-badge, .tiles-badge, .stone-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-gold-soft);
  border: 1px solid var(--border-gold);
  color: var(--color-gold);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.spec-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.spec-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-gold);
  box-shadow: var(--shadow-md);
}

.spec-card h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--color-text-dim);
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.spec-card p {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin: 0;
}

.spec-card small {
  font-size: 0.775rem;
  color: var(--color-gold);
  font-weight: 600;
}

.content-section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.content-section h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  margin-bottom: 1.25rem;
  color: var(--color-text-main);
}

.content-section h3 {
  font-size: 1.25rem;
  margin: 1.75rem 0 0.75rem;
  color: var(--color-gold);
  font-family: var(--font-serif);
}

.content-section p {
  color: var(--color-stone-muted);
  line-height: 1.8;
  margin-bottom: 1.25rem;
  font-size: 1.025rem;
}

.content-section ul, .content-section ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--color-stone-muted);
  line-height: 1.75;
}

.content-section li {
  margin-bottom: 0.5rem;
}

.data-table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 2rem 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
  min-width: 600px;
}

.data-table th {
  background: var(--bg-surface-alt);
  color: var(--color-text-main);
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.data-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--color-text-muted);
}

.data-table tr:hover td {
  background: var(--bg-surface);
}

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

.grades-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.grade-box {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  border-top: 3px solid var(--color-gold);
  box-shadow: var(--shadow-sm);
}

.grade-box h4 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.grade-box p {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(179, 135, 40, 0.08) 0%, rgba(251, 249, 245, 0.95) 100%);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  text-align: center;
  margin: 3.5rem 0 2rem;
  box-shadow: var(--shadow-sm);
}

.cta-banner h3 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--color-text-main);
  margin-bottom: 0.75rem;
}

.cta-banner p {
  color: var(--color-text-muted);
  max-width: 680px;
  margin: 0 auto 1.5rem;
  font-size: 1.05rem;
}

.pro-tip, .callout-box {
  background: var(--bg-surface);
  border-left: 4px solid var(--color-gold);
  border-radius: var(--radius-xs);
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0;
  border-top: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.pro-tip strong, .callout-box strong {
  color: var(--color-text-main);
}


/* Sticky WhatsApp Button */
#tm-sticky-wa{position:fixed;bottom:24px;right:24px;z-index:9999;width:56px;height:56px;border-radius:50%;background:#25D366;color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(0,0,0,.25);transition:transform .2s}
#tm-sticky-wa:hover{transform:scale(1.1)}
@media(max-width:768px){#tm-sticky-wa{bottom:80px;right:16px;width:52px;height:52px}}