:root {
  --primary: #0056b3; /* Industrial Blue */
  --primary-dark: #004494;
  --secondary: #6c757d;
  --bg-light: #f8f9fa;
  --text-dark: #212529;
  --text-muted: #6c757d;
  --white: #ffffff;
  --border: #dee2e6;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --max-width: 1200px;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-base);
  color: var(--text-dark);
  line-height: 1.6;
  background-color: var(--bg-light);
}

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

ul {
  list-style: none;
}

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

/* Utilities */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
  text-align: center;
  border: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--white);
  color: var(--white);
}

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

.section {
  padding: 60px 0;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 10px;
  color: var(--text-dark);
  text-align: center;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Header */
header {
  background-color: var(--white);
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.top-bar {
  background-color: var(--text-dark);
  color: var(--white);
  font-size: 0.9rem;
  padding: 8px 0;
}

.top-bar .container {
  display: flex;
  justify-content: flex-end;
  gap: 20px;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-dark);
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  color: var(--white);
  padding: 100px 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.card-image {
  height: 200px;
  background-color: #eee;
  object-fit: cover;
  width: 100%;
}

.card-content {
  padding: 20px;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
  color: var(--primary);
}

/* Trust Points */
.trust-points {
  background-color: var(--white);
}

.point {
  text-align: center;
  padding: 20px;
}

.point-icon {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 20px;
  display: inline-block;
}

/* Process */
.process-steps {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
}

.step {
  flex: 1;
  min-width: 250px;
  text-align: center;
  position: relative;
}

.step-number {
  width: 40px;
  height: 40px;
  background-color: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-weight: bold;
}

/* Footer */
footer {
  background-color: #1a1a1a;
  color: #ccc;
  padding: 60px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer h3 {
  color: var(--white);
  margin-bottom: 20px;
}

.footer-links li {
  margin-bottom: 10px;
}

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

.copyright {
  text-align: center;
  border-top: 1px solid #333;
  padding-top: 20px;
  font-size: 0.9rem;
}

/* Forms */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* Table */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.specs-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
}

.specs-table td:first-child {
  font-weight: 600;
  width: 40%;
  color: var(--text-muted);
}

/* Product Page Specific */
.product-block {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 30px;
  margin-bottom: 40px;
}

.product-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 20px 0;
}

.gallery-img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 4px;
  background-color: #eee;
}

/* Mobile */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px;
    box-shadow: var(--shadow);
  }

  .nav-links.active {
    display: flex;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .process-steps {
    flex-direction: column;
  }
}