/* ===== DESIGN TOKENS ===== */
:root {
  /* Colors */
  --primary-blue: #0066CC;
  --primary-blue-dark: #004B99;
  --primary-blue-light: #1a7ee8;
  --secondary-gray: #6B7280;
  --secondary-gray-light: #9CA3AF;
  --accent-amber: #F59E0B;
  --accent-amber-bg: #FEF3C7;
  --text-dark: #1F2937;
  --text-light: #6B7280;
  --surface-white: #FFFFFF;
  --surface-light: #F9FAFB;
  --surface-lighter: #F3F4F6;
  --border-color: #E5E7EB;
  --border-subtle: #f0f0f0;

  /* Typography */
  --font-primary: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'IBM Plex Mono', monospace;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 28px;
  --font-size-3xl: 32px;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-relaxed: 1.6;
  --line-height-normal: 1.5;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* Breakpoints */
  --bp-sm: 375px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1440px;
}

/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--text-dark);
  background-color: var(--surface-white);
}

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-blue-dark);
}

/* ===== CONTAINER ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

/* ===== TYPOGRAPHY ===== */
h1 {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.5px;
}

h2 {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.3;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  letter-spacing: -0.5px;
}

h3 {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.3px;
}

h4 {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.3px;
}

p {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

@media (max-width: 768px) {
  h1 {
    font-size: 24px;
  }
  h2 {
    font-size: 20px;
  }
  h3 {
    font-size: 18px;
  }
}

/* ===== BUTTONS ===== */
.btn-primary,
.btn-secondary,
.btn-link {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-block;
  text-align: center;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.btn-primary:hover {
  background-color: var(--primary-blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.15);
}

.btn-primary:active {
  transform: translateY(0);
}

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

.btn-secondary:hover {
  background-color: var(--surface-lighter);
  border-color: var(--text-dark);
  color: var(--text-dark);
}

.btn-link {
  background: none;
  color: var(--primary-blue);
  padding: 0;
  min-height: auto;
  font-size: var(--font-size-base);
}

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

.btn-lg {
  padding: 12px 32px;
  font-size: var(--font-size-lg);
  min-height: 48px;
}

/* ===== NAVIGATION ===== */
.navbar {
  background-color: var(--surface-white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding: var(--spacing-sm) 0;
  min-height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-weight: var(--font-weight-bold);
  font-size: 14px;
  line-height: 1.2;
  color: var(--text-dark);
  flex-shrink: 0;
}

.logo-image {
  height: 72px;
  width: auto;
  max-width: 320px;
  object-fit: contain;
  display: block;
}

.logo svg {
  width: 40px;
  height: 40px;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 26px;
  flex: 1;
  justify-content: center;
  margin: 0;
}

.nav-menu a {
  color: var(--text-light);
  font-weight: var(--font-weight-medium);
  font-size: 15px;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.nav-menu a:hover {
  color: var(--primary-blue);
}

.nav-cta {
  flex-shrink: 0;
}

/* Hamburger toggle (hidden on desktop) */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-dark);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* Tablet & mobile: collapse to hamburger */
@media (max-width: 1024px) {
  .navbar-content {
    flex-wrap: wrap;
  }
  .nav-toggle {
    display: inline-flex;
    order: 2;
  }
  .nav-cta {
    order: 3;
  }
  .nav-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    order: 4;
    margin-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
  }
  .nav-menu li {
    border-bottom: 1px solid var(--border-subtle);
  }
  .nav-menu a {
    display: block;
    padding: var(--spacing-md) var(--spacing-xs);
    font-size: var(--font-size-base);
  }
  .navbar-content.mobile-menu-open .nav-menu {
    display: flex;
  }
}

@media (max-width: 768px) {
  .logo-image {
    height: 52px;
  }
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  min-height: 600px;
  background-color: var(--text-dark);
  overflow: hidden;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

html {
  overflow-x: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to right, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.2) 40%, rgba(0, 0, 0, 0) 100%);
  z-index: 1;
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding: var(--spacing-3xl);
  color: var(--surface-white);
}

.hero-content h1 {
  color: var(--surface-white);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
  font-size: 48px;
}

.hero-content > p {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-2xl);
  max-width: 100%;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.placeholder-lg,
.placeholder-md,
.placeholder-sm {
  background-color: var(--surface-lighter);
  border: 2px dashed var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  color: var(--secondary-gray-light);
  border-radius: var(--radius-lg);
}

.placeholder-lg {
  width: 100%;
  height: 400px;
  font-size: var(--font-size-lg);
}

.placeholder-md {
  width: 100%;
  height: 280px;
  font-size: var(--font-size-base);
}

.placeholder-sm {
  width: 100%;
  height: 200px;
  font-size: var(--font-size-sm);
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    padding: var(--spacing-2xl) 0;
  }
  .placeholder-lg {
    height: 300px;
  }
}

@media (max-width: 768px) {
  .hero-buttons {
    width: 100%;
  }
  .hero-buttons button {
    flex: 1;
    min-width: 150px;
  }
  .hero-content > p {
    max-width: 100%;
  }
}

/* ===== TRUST SECTION ===== */
.trust-section {
  background-color: var(--surface-light);
  padding: var(--spacing-3xl) 0;
  margin: var(--spacing-3xl) 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.trust-card {
  background-color: var(--surface-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  text-align: center;
}

.trust-icon {
  font-size: 32px;
  color: var(--accent-amber);
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-bold);
}

.trust-card h3 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.trust-card p {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  margin-bottom: 0;
}

/* ===== FEATURED PRODUCTS ===== */
.featured-products {
  padding: var(--spacing-3xl) 0;
}

.products-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.product-card {
  background-color: var(--surface-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.product-card:hover {
  border-color: var(--primary-blue);
  box-shadow: 0 8px 16px rgba(0, 102, 204, 0.1);
  transform: translateY(-4px);
}

.product-image {
  width: 100%;
  height: 240px;
  overflow: hidden;
  background-color: var(--surface-lighter);
}

.product-image .placeholder-md {
  height: 100%;
  margin: 0;
}

.product-info {
  padding: var(--spacing-lg);
}

.product-info h3 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.product-model {
  font-size: var(--font-size-sm);
  color: var(--secondary-gray);
  margin-bottom: var(--spacing-md);
}

.certifications {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}

.cert-badge {
  display: inline-block;
  background-color: var(--accent-amber-bg);
  color: #92400E;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--accent-amber);
}

.view-all {
  text-align: center;
}

/* ===== SOLUTIONS ===== */
.solutions {
  background-color: var(--surface-light);
  padding: var(--spacing-3xl) 0;
  margin: var(--spacing-3xl) 0;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.solution-card {
  background-color: var(--surface-white);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: all 0.3s ease;
}

.solution-card:hover {
  border-color: var(--primary-blue);
  box-shadow: 0 8px 16px rgba(0, 102, 204, 0.1);
}

.solution-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  border-radius: 50%;
  background-color: rgba(0, 102, 204, 0.08);
  color: var(--primary-blue);
}

.solution-icon svg {
  width: 32px;
  height: 32px;
}

.solution-card h3 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.solution-card p {
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* ===== CTA SECTION ===== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, rgba(0, 82, 163, 0.75) 0%, rgba(0, 66, 132, 0.75) 100%),
              url('images/cta-refinery-night.jpg') center/cover;
  background-attachment: fixed;
  color: var(--surface-white);
  padding: var(--spacing-3xl) 0;
  text-align: center;
  min-height: 350px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.cta-section h2 {
  color: var(--surface-white);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn-primary {
  background-color: var(--surface-white);
  color: var(--primary-blue);
}

.cta-section .btn-primary:hover {
  background-color: var(--surface-light);
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--text-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-col h4 {
  color: var(--surface-white);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.footer-col p {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.7);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--primary-blue);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
}

/* ===== PRODUCTS PAGE ===== */
.products-page-header {
  background-color: var(--surface-light);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.products-page-header h1 {
  margin-bottom: var(--spacing-md);
}

.products-page-header p {
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

.products-filter {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
  justify-content: center;
}

.products-filter button {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 1px solid var(--border-color);
  background-color: var(--surface-white);
  color: var(--text-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: var(--font-weight-medium);
}

.products-filter button:hover,
.products-filter button.active {
  background-color: var(--primary-blue);
  color: var(--surface-white);
  border-color: var(--primary-blue);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
}

/* ===== PRODUCT DETAIL PAGE ===== */
.product-detail {
  padding: var(--spacing-3xl) 0;
}

.product-detail-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.product-detail-image {
  background-color: var(--surface-lighter);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.product-detail-image .placeholder-lg {
  height: 500px;
  margin: 0;
}

.product-detail-info h1 {
  margin-bottom: var(--spacing-md);
}

.product-detail-info .product-model {
  font-size: var(--font-size-lg);
  color: var(--secondary-gray);
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-medium);
}

.specs-overview {
  background-color: var(--surface-light);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
}

.specs-overview ul {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.specs-overview li {
  font-size: var(--font-size-sm);
}

.specs-overview strong {
  color: var(--text-dark);
  font-weight: var(--font-weight-semibold);
}

.product-detail-cta {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

@media (max-width: 1024px) {
  .product-detail-header {
    grid-template-columns: 1fr;
  }
  .product-detail-image .placeholder-lg {
    height: 350px;
  }
}

/* ===== SPECIFICATIONS SECTION ===== */
.specs-section {
  margin: var(--spacing-3xl) 0;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.spec-card {
  background-color: var(--surface-light);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary-blue);
}

.spec-card h4 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.spec-card p {
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

/* ===== CERTIFICATIONS ===== */
.certifications-section {
  background-color: var(--accent-amber-bg);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  border: 2px solid var(--accent-amber);
  margin: var(--spacing-2xl) 0;
}

.certifications-section h3 {
  color: #92400E;
  margin-bottom: var(--spacing-md);
}

.cert-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  list-style: none;
}

.cert-list li {
  font-size: var(--font-size-sm);
  color: #92400E;
  font-weight: var(--font-weight-medium);
}

.cert-list li::before {
  content: "✓ ";
  color: var(--accent-amber);
  font-weight: var(--font-weight-bold);
  margin-right: 8px;
}

/* ===== DOWNLOADS SECTION ===== */
.downloads-section {
  margin: var(--spacing-3xl) 0;
}

.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.download-card {
  background-color: var(--surface-light);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.download-card:hover {
  border-color: var(--primary-blue);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.1);
}

.download-icon {
  font-size: 40px;
  margin-bottom: var(--spacing-md);
}

.download-card h4 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
}

.download-card p {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
}

.download-card .btn-primary {
  width: 100%;
}

/* ===== VIDEO DEMO SECTION ===== */
.video-demo-section {
  background-color: var(--surface-light);
  padding: var(--spacing-3xl);
  border-radius: var(--radius-lg);
  text-align: center;
  margin: var(--spacing-3xl) 0;
}

.video-demo-section h2 {
  margin-bottom: var(--spacing-lg);
}

.video-container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--text-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  color: rgba(255, 255, 255, 0.7);
}

.video-placeholder svg {
  width: 80px;
  height: 80px;
  opacity: 0.5;
}

/* ===== RELATED PRODUCTS ===== */
.related-products {
  margin: var(--spacing-3xl) 0;
}

.related-products h2 {
  margin-bottom: var(--spacing-2xl);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

/* ===== RESPONSIVE ===== */

/* Hero responsive */
@media (max-width: 1024px) {
  .hero {
    min-height: 500px;
  }
  .hero-content h1 {
    font-size: 36px;
  }
  .hero-content {
    max-width: 500px;
    padding: var(--spacing-2xl);
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: 400px;
    align-items: center;
  }
  .hero::before {
    background: linear-gradient(to right, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.3) 60%, rgba(0, 0, 0, 0) 100%);
  }
  .hero-content {
    max-width: 100%;
    padding: var(--spacing-lg);
  }
  .hero-content h1 {
    font-size: 28px;
    margin-bottom: var(--spacing-md);
  }
  .hero-content > p {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
  }
  .hero-buttons {
    flex-direction: column;
  }
  .hero-buttons button,
  .hero-buttons .btn-secondary {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .specs-overview ul {
    grid-template-columns: 1fr;
  }
  .cert-list {
    grid-template-columns: 1fr;
  }
  .product-detail-cta {
    flex-direction: column;
  }
  .product-detail-cta button {
    width: 100%;
  }
}

/* ===== QUOTE FORM PAGE ===== */
.quote-header {
  background-color: var(--surface-light);
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  border-bottom: 1px solid var(--border-color);
}

.quote-header h1 {
  margin-bottom: var(--spacing-md);
}

.quote-header p {
  font-size: var(--font-size-lg);
  max-width: 700px;
  margin-bottom: 0;
}

.req-star {
  color: #DC2626;
  font-weight: var(--font-weight-bold);
}

.quote-section {
  padding: var(--spacing-3xl) 0;
}

.quote-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--spacing-2xl);
  align-items: start;
}

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

.form-field {
  display: flex;
  flex-direction: column;
}

.form-field-full {
  grid-column: 1 / -1;
}

.form-field label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-dark);
  margin-bottom: var(--spacing-xs);
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field input[type="tel"],
.form-field input[type="number"],
.form-field input[type="date"],
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px var(--spacing-md);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  color: var(--text-dark);
  background-color: var(--surface-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-field textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.5;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
}

.form-field input.input-error,
.form-field select.input-error {
  border-color: #DC2626;
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--secondary-gray-light);
}

.field-helper {
  display: block;
  font-size: 13px;
  color: var(--text-light);
  margin-top: var(--spacing-xs);
}

/* Radio group */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xs);
}

.radio-option {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-base) !important;
  font-weight: var(--font-weight-regular) !important;
  color: var(--text-dark);
  cursor: pointer;
  padding: 8px var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 0 !important;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.radio-option:hover {
  border-color: var(--primary-blue);
  background-color: rgba(0, 102, 204, 0.04);
}

.radio-option input {
  accent-color: var(--primary-blue);
  width: 18px;
  height: 18px;
}

/* File upload */
.file-upload {
  margin-top: var(--spacing-sm);
}

.file-upload input[type="file"] {
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  color: var(--text-light);
  width: 100%;
}

.file-upload input[type="file"]::file-selector-button {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-semibold);
  padding: 8px var(--spacing-md);
  margin-right: var(--spacing-md);
  color: var(--primary-blue);
  background-color: rgba(0, 102, 204, 0.08);
  border: 1px solid var(--primary-blue);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.file-upload input[type="file"]::file-selector-button:hover {
  background-color: rgba(0, 102, 204, 0.15);
}

/* Submit + success */
.form-submit {
  margin-top: var(--spacing-2xl);
}

.form-submit button {
  width: 100%;
}

.form-success {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background-color: #ECFDF5;
  border: 1px solid #10B981;
  border-radius: var(--radius-md);
  color: #065F46;
  font-weight: var(--font-weight-medium);
  text-align: center;
}

/* Contact sidebar */
.quote-contact {
  background-color: var(--surface-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  position: sticky;
  top: 90px;
}

.quote-contact h3 {
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
}

.quote-contact-lead {
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-lg);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: rgba(0, 102, 204, 0.08);
  color: var(--primary-blue);
}

.contact-icon svg {
  width: 22px;
  height: 22px;
}

.contact-label {
  display: block;
  font-size: 13px;
  font-weight: var(--font-weight-semibold);
  color: var(--secondary-gray);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.contact-value {
  font-size: var(--font-size-base);
  color: var(--text-dark);
  font-weight: var(--font-weight-medium);
}

a.contact-value:hover {
  color: var(--primary-blue);
}

.contact-hours {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-hours strong {
  color: var(--primary-blue);
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
}

.contact-hours span {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

@media (max-width: 1024px) {
  .quote-layout {
    grid-template-columns: 1fr;
  }
  .quote-contact {
    position: static;
  }
}

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== RESOURCES PAGE ===== */
.resource-tab {
  margin-top: var(--spacing-lg);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.video-card {
  background-color: var(--surface-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-blue);
  box-shadow: 0 8px 16px rgba(0, 102, 204, 0.1);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #1F2937 0%, #374151 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-play {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.9);
  color: var(--primary-blue);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.video-card:hover .video-play {
  transform: scale(1.1);
  background-color: #fff;
}

.video-play svg {
  width: 26px;
  height: 26px;
  margin-left: 3px;
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background-color: rgba(0, 0, 0, 0.75);
  color: #fff;
  font-size: 12px;
  font-weight: var(--font-weight-medium);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.video-card-body {
  padding: var(--spacing-lg);
}

.video-card-body h3 {
  font-size: var(--font-size-lg);
  color: var(--text-dark);
  margin: var(--spacing-sm) 0;
}

.video-card-body p {
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

.resource-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--primary-blue);
  background-color: rgba(0, 102, 204, 0.08);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
}

/* ===== MANUFACTURERS PAGE ===== */
.mfr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.mfr-card {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 3 / 2;
  background-color: var(--surface-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--secondary-gray-light);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.mfr-card:hover {
  border-color: var(--primary-blue);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.08);
}

/* ===== ABOUT PAGE ===== */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.about-story p {
  font-size: var(--font-size-base);
  line-height: 1.7;
}

.about-image .placeholder-lg {
  height: 340px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--spacing-lg);
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: var(--font-weight-bold);
  color: var(--primary-blue);
  line-height: 1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  font-weight: var(--font-weight-medium);
}

@media (max-width: 1024px) {
  .about-story {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}