/* ==========================================================================
   METALBUILDINGSINSTALLED.COM - CORE DESIGN SYSTEM
   Professional Grade Industrial & Commercial Steel Structures
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@500;600;700;800&display=swap');

:root {
  /* Dark Industrial Theme Tokens */
  --bg-main: #080b12;
  --bg-surface-1: #0f1523;
  --bg-surface-2: #161e31;
  --bg-surface-3: #1e2842;
  --bg-surface-glass: rgba(18, 26, 44, 0.75);
  --bg-glass-card: rgba(22, 32, 54, 0.65);
  
  /* Primary & Accent Branding */
  --accent-amber: #f59e0b;
  --accent-amber-glow: rgba(245, 158, 11, 0.35);
  --accent-amber-light: #fbbf24;
  --accent-orange: #ff6b00;
  --accent-blue: #0284c7;
  --accent-cyan: #38bdf8;
  --accent-cyan-glow: rgba(56, 189, 248, 0.3);
  --accent-green: #10b981;
  --accent-green-glow: rgba(16, 185, 129, 0.25);
  
  /* Neutral Palette */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(245, 158, 11, 0.4);
  
  /* Shadows & Depth */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.75);
  --shadow-glow-amber: 0 0 35px rgba(245, 158, 11, 0.25);
  --shadow-glow-cyan: 0 0 35px rgba(56, 189, 248, 0.2);

  /* Layout & Spacing */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --max-width: 1280px;
  
  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* Anti-Spam Honeypot Security Classes */
.form-hp,
.anti-spam-hp {
  display: none !important;
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
  visibility: hidden !important;
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}


html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Ambient Lighting */
.ambient-glow-1 {
  position: absolute;
  top: -100px;
  left: 20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.14) 0%, transparent 70%);
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
}

.ambient-glow-2 {
  position: absolute;
  top: 400px;
  right: 5%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, transparent 70%);
  filter: blur(150px);
  pointer-events: none;
  z-index: 0;
}

.grid-blueprint-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.6;
  pointer-events: none;
  z-index: 0;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

/* UI Badges & Pills */
.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent-amber-light);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.15);
}

.pill-badge.cyan {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.4);
  color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.15);
}

.pill-badge.green {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.4);
  color: #34d399;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  outline: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #000000;
  font-weight: 800;
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.6);
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
}

.btn-secondary {
  background: var(--bg-surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-surface-3);
  border-color: var(--accent-cyan);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.25);
}

.btn-cyan {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(2, 132, 199, 0.4);
}

.btn-cyan:hover {
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 18px 36px;
  font-size: 1.15rem;
  border-radius: var(--radius-lg);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 11, 18, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.top-bar-announcement {
  background: linear-gradient(90deg, #1e1b13, #2b2210, #1e1b13);
  border-bottom: 1px solid rgba(245, 158, 11, 0.25);
  padding: 7px 0;
  font-size: 0.82rem;
  color: var(--accent-amber-light);
  text-align: center;
  font-weight: 600;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
}

.top-bar-announcement span.highlight {
  background: #f59e0b;
  color: #000;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 800;
  font-size: 0.75rem;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 24px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(245, 158, 11, 0.4);
  color: #000;
  font-weight: 900;
  font-size: 1.4rem;
}

.brand-logo-text {
  font-family: var(--font-heading);
  font-size: 1.28rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: #ffffff;
  white-space: nowrap;
}

.brand-logo-text span {
  color: var(--accent-amber);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 18px;
  list-style: none;
}

.nav-item a {
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  white-space: nowrap;
}

.nav-item a:hover {
  color: var(--accent-amber);
}

.nav-phone-cta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.phone-link {
  font-family: var(--font-mono);
  font-weight: 800;
  color: #ffffff;
  font-size: 1.05rem;
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.phone-link small {
  font-size: 0.72rem;
  color: var(--accent-green);
  font-family: var(--font-body);
  font-weight: 600;
}

/* Hero Section */
.hero-section {
  padding: 60px 0 90px 0;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-headline {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin: 16px 0 20px 0;
}

.hero-headline span.gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, #f59e0b 80%, #fbbf24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtext {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 28px;
  max-width: 600px;
}

.hero-trust-bullets {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 20px;
  margin-bottom: 32px;
}

.trust-bullet {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #e2e8f0;
}

.trust-bullet-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
  flex-shrink: 0;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Fast Zip Code Delivery Card Widget in Hero */
.hero-zip-card {
  background: linear-gradient(145deg, rgba(22, 31, 51, 0.85), rgba(15, 21, 35, 0.95));
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-lg), var(--shadow-glow-amber);
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.hero-zip-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #f59e0b, #0284c7, #10b981);
}

.zip-card-header {
  margin-bottom: 20px;
}

.zip-card-title {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.zip-card-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.quick-estimator-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.form-select, .form-input {
  width: 100%;
  padding: 13px 16px;
  background: rgba(8, 12, 20, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s ease;
  outline: none;
}

.form-select:focus, .form-input:focus {
  border-color: var(--accent-amber);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}

.zip-input-row {
  display: flex;
  gap: 10px;
}

.zip-result-preview {
  background: rgba(8, 12, 20, 0.6);
  border: 1px dashed rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.zip-result-preview span.status {
  color: var(--accent-green);
  font-weight: 700;
}

/* Statistics Bar */
.stats-banner-section {
  background: var(--bg-surface-1);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 32px 0;
  margin-bottom: 80px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.stat-number span {
  color: var(--accent-amber);
}

.stat-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* 5 Major Product Category Cards */
.categories-section {
  padding: 40px 0 100px 0;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 56px auto;
}

.section-title {
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  margin: 12px 0 16px 0;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.category-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.category-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.category-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-amber);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(245, 158, 11, 0.15);
}

.card-visual-banner {
  height: 240px;
  position: relative;
  background: #111827;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-visual-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.category-card:hover .card-visual-banner img,
.building-showcase-card:hover .card-image-container img {
  transform: scale(1.06);
}

/* Building Real Showcase Grid & Cards */
.building-gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.building-showcase-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.building-showcase-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-amber);
  box-shadow: var(--shadow-lg), 0 0 35px rgba(245, 158, 11, 0.22);
}

.card-image-container {
  position: relative;
  width: 100%;
  height: 290px;
  overflow: hidden;
  background: #0b0f19;
}

.card-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.dimension-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(245, 158, 11, 0.6);
  color: var(--accent-amber-light);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.92rem;
  padding: 6px 14px;
  border-radius: 9999px;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
  z-index: 5;
}

.category-tag-badge {
  position: absolute;
  bottom: 16px;
  right: 16px;
  background: rgba(8, 12, 20, 0.9);
  border: 1px solid rgba(56, 189, 248, 0.5);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 9999px;
  backdrop-filter: blur(8px);
  z-index: 5;
}

.card-tag-pill {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 5;
}

.card-pricing-badge {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(8, 12, 20, 0.9);
  border: 1px solid rgba(245, 158, 11, 0.4);
  padding: 6px 14px;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-amber-light);
  backdrop-filter: blur(8px);
}

.card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.card-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.55;
}

.card-specs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.card-spec-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: #cbd5e1;
}

.spec-icon {
  color: var(--accent-amber);
  font-weight: 800;
  font-size: 0.85rem;
}

.card-footer-cta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Interactive Visualizer & Price Configurator */
.configurator-section {
  padding: 90px 0;
  background: linear-gradient(180deg, var(--bg-main) 0%, var(--bg-surface-1) 50%, var(--bg-main) 100%);
  position: relative;
}

.configurator-box {
  background: var(--bg-surface-2);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), var(--shadow-glow-amber);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
}

.config-visual-panel {
  background: #0b0f19;
  padding: 40px;
  display: flex;
  flex-direction: column;
  position: relative;
  border-right: 1px solid var(--border-subtle);
}

.visual-preview-canvas {
  flex: 1;
  min-height: 320px;
  background: radial-gradient(circle, #131b2e 0%, #070a12 80%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow: hidden;
}

.blueprint-specs-overlay {
  position: absolute;
  bottom: 14px;
  left: 14px;
  right: 14px;
  background: rgba(15, 23, 42, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  backdrop-filter: blur(10px);
}

.config-form-panel {
  padding: 36px 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: rgba(18, 26, 44, 0.9);
}

.config-tab-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.config-tab-btn {
  padding: 10px 12px;
  background: rgba(8, 12, 20, 0.7);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s ease;
}

.config-tab-btn.active {
  background: rgba(245, 158, 11, 0.2);
  border-color: var(--accent-amber);
  color: #ffffff;
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.2);
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 700;
}

.slider-val {
  font-family: var(--font-mono);
  color: var(--accent-amber-light);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-amber);
  cursor: pointer;
}

.live-price-calculator-bar {
  background: rgba(8, 12, 20, 0.95);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
}

.live-price-number {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--accent-amber-light);
}

.live-price-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Engineering & Spec Comparison Matrix */
.specs-matrix-section {
  padding: 80px 0;
}

.specs-table-container {
  background: var(--bg-surface-2);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  overflow-x: auto;
  box-shadow: var(--shadow-md);
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.specs-table th {
  background: rgba(11, 15, 26, 0.95);
  padding: 18px 22px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid rgba(245, 158, 11, 0.3);
  color: #ffffff;
}

.specs-table td {
  padding: 16px 22px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.specs-table tr:hover td {
  background: rgba(245, 158, 11, 0.04);
  color: #ffffff;
}

.badge-check {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-green);
  font-weight: 700;
}

/* AI Q&A / ChatGPT Generative Search Section */
.ai-geo-section {
  padding: 80px 0 100px 0;
  background: var(--bg-surface-1);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.faq-accordion-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.faq-card {
  background: var(--bg-surface-2);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.25s ease;
}

.faq-card:hover {
  border-color: var(--accent-amber);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.faq-question {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.faq-icon-q {
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-amber);
  font-family: var(--font-mono);
  font-weight: 900;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.faq-answer {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.faq-key-facts {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.fact-tag {
  background: rgba(8, 12, 20, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 3px 10px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
}

/* Reviews & Verified Installs Gallery */
.reviews-section {
  padding: 90px 0;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-stars {
  color: #fbbf24;
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.review-text {
  font-size: 0.95rem;
  color: #cbd5e1;
  margin-bottom: 20px;
  line-height: 1.6;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.reviewer-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e293b, #334155);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.reviewer-info h5 {
  font-size: 0.95rem;
  font-weight: 800;
}

.reviewer-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Quote Lead Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 13, 0.85);
  backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  padding: 20px;
}

.modal-backdrop.active {
  display: flex;
}

.quote-modal-box {
  background: var(--bg-surface-2);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-xl);
  padding: 40px;
  max-width: 600px;
  width: 100%;
  position: relative;
  box-shadow: var(--shadow-lg), var(--shadow-glow-amber);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.6rem;
  cursor: pointer;
  transition: color 0.2s ease;
}

.modal-close-btn:hover {
  color: #ffffff;
}

/* Footer */
.site-footer {
  background: #05070d;
  border-top: 1px solid var(--border-subtle);
  padding: 80px 0 30px 0;
}

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

.footer-col h4 {
  font-size: 1.05rem;
  margin-bottom: 18px;
  color: #ffffff;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--accent-amber);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .category-cards-grid {
    grid-template-columns: 1fr 1fr;
  }
  .configurator-box {
    grid-template-columns: 1fr;
  }
  .config-visual-panel {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }
  .faq-accordion-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .building-gallery-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .hero-headline {
    font-size: 2.6rem;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .category-cards-grid {
    grid-template-columns: 1fr;
  }
  .building-gallery-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}