:root {
  /* Colors */
  --wf-bg: #f8f9fa;
  --wf-fg: #1a1a1a;
  --wf-primary: #2563eb; /* Industrial Blue */
  --wf-primary-dark: #1e40af;
  --wf-accent: #f59e0b; /* Safety Orange/Yellow */
  --wf-concrete: #9ca3af;
  --wf-panel: #d1d5db;
  --wf-surface: #ffffff;
  --wf-border: #e5e7eb;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 48px;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Borders */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background-color: var(--wf-bg);
  color: var(--wf-fg);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  font-weight: 700;
  line-height: 1.2;
  color: #111827;
}

h1 { font-size: 3rem; letter-spacing: -0.025em; }
h2 { font-size: 2.25rem; letter-spacing: -0.025em; margin-bottom: var(--spacing-lg); }
h3 { font-size: 1.5rem; margin-bottom: var(--spacing-sm); }

p { margin-bottom: 1.5rem; color: #4b5563; }

/* Layout */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(1, 1fr); }
.grid-3 { grid-template-columns: repeat(1, 1fr); }

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

/* Navbar */
.navbar {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--wf-border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--spacing-md) 0;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--wf-primary-dark);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  color: #4b5563;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--wf-primary);
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  background-color: var(--wf-primary);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.btn:hover {
  background-color: var(--wf-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--wf-primary);
  color: var(--wf-primary);
  box-shadow: none;
}

.btn-outline:hover {
  background-color: var(--wf-primary);
  color: white;
}

/* Hero Section */
.hero {
  padding: 80px 0;
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 800px;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  color: #1f2937;
}

.hero p {
  font-size: 1.25rem;
  max-width: 600px;
  margin-bottom: var(--spacing-lg);
}

/* Sections */
.section {
  padding: 80px 0;
}

.section-bg {
  background-color: white;
}

/* Cards */
.card {
  background: var(--wf-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--wf-border);
  transition: transform 0.2s, box-shadow 0.2s;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--wf-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.icon-shape {
  width: 24px;
  height: 24px;
  background-color: currentColor;
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
}

/* Fallback simple shapes if masks aren't used */
.icon-shape.square { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
.icon-shape.triangle { clip-path: polygon(50% 0, 0 100%, 100% 100%); }
.icon-shape.circle { border-radius: 50%; }
.icon-shape.roof { clip-path: polygon(0 40%, 50% 0, 100% 40%, 100% 100%, 0 100%); }

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: white;
}

.gallery-item img {
  width: 100%;
  height: auto;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.02);
}

.gallery-caption {
  padding: var(--spacing-md);
  border-top: 1px solid var(--wf-border);
}

/* Specs Table */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.specs-table th, .specs-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--wf-border);
}

.specs-table th {
  background-color: #f9fafb;
  font-weight: 600;
  color: #374151;
  width: 30%;
}

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

/* Material Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  background-color: #eff6ff;
  color: var(--wf-primary-dark);
}

.badge-concrete {
  background-color: #f3f4f6;
  color: #374151;
}

.badge-panel {
  background-color: #e0f2fe;
  color: #0369a1;
}

/* Utilities */
.text-primary { color: var(--wf-primary); }
.text-white { color: white !important; }
.text-gray { color: #9ca3af !important; }
.text-gray-dark { color: #6b7280 !important; }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-0 { margin-bottom: 0 !important; }
.w-100 { width: 100%; }
.flex-gap-md { display: flex; gap: var(--spacing-md); }
.caption-text { margin: 0; font-size: 0.9rem; }
.text-center { text-align: center; }
.border-top-dark { border-top: 1px solid #374151; }
.pt-md { padding-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.text-sm { font-size: 0.875rem; }
.font-semibold { font-weight: 600; }

/* Components */
.hero-stats {
  margin-bottom: 32px;
  gap: 16px;
}

.stat-card {
  padding: 16px;
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.stat-icon {
  margin: 0;
  width: 40px;
  height: 40px;
}

.nav-icon-wrapper {
  width: 32px;
  height: 32px;
  margin: 0;
  font-size: 1rem;
}

.nav-icon-shape {
  width: 16px;
  height: 16px;
}

.cta-card {
  justify-content: center;
  background-color: #1f2937;
  color: white;
  border: none;
}

.cta-card h3 { color: white; }
.cta-card p { color: #9ca3af; }

/* Footer */
.footer {
  background-color: #1f2937;
  color: #f3f4f6;
  padding: 60px 0;
  margin-top: auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
}

.footer-links a {
  color: #9ca3af;
  text-decoration: none;
  margin-left: var(--spacing-lg);
}

.footer-links a:hover {
  color: white;
}