/* ============================================
   RFPro Components - Professional B2B E-Commerce
   Design System for RF Passive Components
   Target: Europe, USA, Canada
   ============================================ */

/* ===== CSS Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Brand Colors - Professional Technical/Industrial */
  --navy-900: #0A1628;
  --navy-800: #0F2340;
  --navy-700: #1A3559;
  --navy-600: #264870;
  --blue-600: #1B5FB5;
  --blue-500: #2575D3;
  --blue-400: #3B8EE8;
  --cyan-400: #00B4D8;
  --cyan-300: #40C9E0;

  /* Neutrals */
  --gray-900: #1A1A2E;
  --gray-800: #2D2D3F;
  --gray-700: #4A4A5C;
  --gray-600: #6B6B7B;
  --gray-500: #8E8E9E;
  --gray-400: #B0B0BE;
  --gray-300: #D1D1DA;
  --gray-200: #E8E8ED;
  --gray-100: #F5F5F7;
  --gray-50: #FAFAFB;
  --white: #FFFFFF;

  /* Semantic */
  --success: #10B981;
  --success-light: #D1FAE5;
  --warning: #F59E0B;
  --warning-light: #FEF3C7;
  --danger: #EF4444;
  --danger-light: #FEE2E2;

  /* Spacing Scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(10, 22, 40, 0.06);
  --shadow-md: 0 4px 12px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 8px 24px rgba(10, 22, 40, 0.12);
  --shadow-xl: 0 16px 48px rgba(10, 22, 40, 0.16);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --max-width: 1280px;
  --header-height: 72px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--gray-900);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--navy-900);
  letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.0625rem; }
h6 { font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.08em; }

a {
  color: var(--blue-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover { color: var(--blue-500); }

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

button { font-family: inherit; cursor: pointer; border: none; background: none; }

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ===== Layout Utilities ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

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

.section-sm { padding: var(--space-2xl) 0; }

.text-center { text-align: center; }
.text-mono { font-family: var(--font-mono); }

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px 24px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--blue-600);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--navy-800);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: transparent;
  color: var(--navy-800);
  border: 2px solid var(--gray-300);
}

.btn-secondary:hover {
  border-color: var(--blue-500);
  color: var(--blue-600);
}

.btn-ghost {
  background: transparent;
  color: var(--navy-700);
}

.btn-ghost:hover {
  background: var(--gray-100);
  color: var(--navy-900);
}

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

.btn-danger:hover {
  background: #DC2626;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
}

.btn-sm {
  padding: 6px 16px;
  font-size: 0.8125rem;
}

.btn-block { width: 100%; }

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ===== Header / Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--navy-900);
  letter-spacing: -0.03em;
}

.logo:hover { color: var(--navy-900); }

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--navy-800), var(--blue-600));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 800;
}

.logo-text { font-size: 1.125rem; }
.logo-text span { color: var(--cyan-400); }

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-700);
  padding: 8px 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue-500);
  transition: width var(--transition-base);
}

.nav-link:hover, .nav-link.active {
  color: var(--navy-900);
}

/* ===== Services Dropdown ===== */
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 220px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 100;
}
.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-menu a {
  display: block;
  padding: 10px 18px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.nav-dropdown-menu a:hover {
  background: var(--gray-100);
  color: var(--navy-900);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.currency-selector {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-700);
  background: var(--white);
  cursor: pointer;
}

.cart-btn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  background: var(--navy-900);
  color: var(--white);
  font-size: 0.8125rem;
  font-weight: 600;
  transition: background var(--transition-fast);
}

.cart-btn:hover { background: var(--navy-800); }

.cart-badge {
  position: absolute;
  top: -6px;
  right: -6px;
  min-width: 20px;
  height: 20px;
  padding: 0 4px;
  background: var(--cyan-400);
  color: var(--navy-900);
  border-radius: 10px;
  font-size: 0.6875rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cart-badge.hidden { display: none; }

.mobile-menu-toggle {
  display: none;
  font-size: 1.5rem;
  color: var(--navy-900);
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 50%, var(--navy-700) 100%);
  color: var(--white);
  overflow: hidden;
  padding: var(--space-4xl) 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(0, 180, 216, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(37, 117, 211, 0.12) 0%, transparent 50%);
  pointer-events: none;
}

.hero-grid-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 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;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 180, 216, 0.15);
  border: 1px solid rgba(0, 180, 216, 0.3);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--cyan-300);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.02em;
}

.hero h1 {
  color: var(--white);
  font-size: 3rem;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

.hero h1 .highlight {
  color: var(--cyan-300);
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--gray-300);
  margin-bottom: var(--space-2xl);
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero .btn-primary {
  background: var(--cyan-400);
  color: var(--navy-900);
}

.hero .btn-primary:hover {
  background: var(--cyan-300);
}

.hero .btn-secondary {
  border-color: rgba(255,255,255,0.3);
  color: var(--white);
}

.hero .btn-secondary:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.1);
}

.hero-stats {
  display: flex;
  gap: var(--space-3xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat { }
.hero-stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  font-family: var(--font-mono);
}

.hero-stat-label {
  font-size: 0.8125rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== Trust Bar ===== */
.trust-bar {
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--space-md) 0;
}

.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-600);
}

.trust-item svg { color: var(--blue-500); flex-shrink: 0; }

/* ===== Section Headers ===== */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--blue-600);
  margin-bottom: var(--space-sm);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  color: var(--gray-600);
  font-size: 1.0625rem;
}

/* ===== Product Categories ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.category-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.category-card:hover {
  border-color: var(--blue-400);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.category-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--navy-800), var(--blue-600));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  margin-bottom: var(--space-lg);
}

.category-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.category-card p {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.category-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--blue-600);
}

/* ===== Product Cards (Catalog) ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.product-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  border-color: var(--blue-400);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.product-card-image {
  width: 100%;
  height: 200px;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card-image .product-visual {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-new { background: var(--cyan-400); color: var(--navy-900); }
.badge-stock { background: var(--success-light); color: var(--success); }
.badge-low { background: var(--warning-light); color: var(--warning); }

.product-card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-category-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  margin-bottom: var(--space-xs);
}

.product-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
  text-decoration: none;
  display: block;
}

.product-card-title:hover { color: var(--blue-600); }

.product-sku {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-bottom: var(--space-md);
}

.product-specs-mini {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: var(--space-md);
  padding: var(--space-sm) 0;
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}

.spec-mini-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
}

.spec-mini-label { color: var(--gray-500); }
.spec-mini-value { font-weight: 600; color: var(--gray-800); font-family: var(--font-mono); }

.product-card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.product-price {
  display: flex;
  flex-direction: column;
}

.product-price-amount {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--navy-900);
  font-family: var(--font-mono);
}

.product-price-unit {
  font-size: 0.6875rem;
  color: var(--gray-500);
}

/* ===== Filters Sidebar ===== */
.catalog-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.filters-sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.filter-group {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--gray-200);
}

.filter-group:last-child { border-bottom: none; }

.filter-group-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-700);
  margin-bottom: var(--space-sm);
}

.filter-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 0;
  cursor: pointer;
  font-size: 0.8125rem;
  color: var(--gray-700);
}

.filter-option input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--blue-600);
}

.filter-option:hover { color: var(--navy-900); }

.filter-count {
  margin-left: auto;
  font-size: 0.6875rem;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 1px 6px;
  border-radius: 100px;
}

.price-range-inputs {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.price-range-inputs input {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
}

.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--gray-200);
}

.catalog-results-count {
  font-size: 0.875rem;
  color: var(--gray-600);
}

.catalog-results-count strong { color: var(--navy-900); }

.sort-select {
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-700);
  background: var(--white);
  cursor: pointer;
}

/* ===== Product Detail Page ===== */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.product-detail-gallery {
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

/* ===== Product Gallery Carousel ===== */
.pg-carousel { width: 100%; display: flex; flex-direction: column; gap: var(--space-md); }
.pg-carousel:focus { outline: none; }
.pg-main { position: relative; display: flex; align-items: center; justify-content: center; background: var(--white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: 0 1px 2px rgba(10,22,40,.06); }
.pg-frame { width: 100%; aspect-ratio: 1 / 1; display: flex; align-items: center; justify-content: center; background: var(--white); }
.pg-slide { width: 100%; max-height: 460px; object-fit: contain; display: none; }
.pg-slide.active { display: block; }
.pg-none { text-align: center; }
.pg-none img, .pg-frame img.product-photo { max-height: 460px; }
.pg-nav { position: absolute; top: 50%; transform: translateY(-50%); width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border: none; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--navy-800); cursor: pointer; box-shadow: 0 2px 8px rgba(10,22,40,.18); transition: background .15s ease, transform .15s ease, opacity .15s ease; z-index: 2; }
.pg-nav span { font-size: 1.6rem; line-height: 1; margin-top: -2px; }
.pg-nav.left { left: 12px; }
.pg-nav.right { right: 12px; }
.pg-nav:hover { background: #fff; transform: translateY(-50%) scale(1.06); }
.pg-nav:active { transform: translateY(-50%) scale(.96); }
.pg-counter { position: absolute; right: 14px; bottom: 14px; font-size: 0.75rem; font-weight: 600; color: var(--gray-600); background: rgba(255,255,255,.85); padding: 3px 9px; border-radius: 20px; letter-spacing: .03em; }
.pg-thumbs { display: flex; gap: var(--space-sm); flex-wrap: wrap; }
.pg-thumbs .pg-thumb { width: 64px; height: 64px; padding: 0; border: 2px solid var(--gray-200); border-radius: var(--radius-md); overflow: hidden; cursor: pointer; background: var(--white); transition: border-color .15s ease, transform .15s ease; }
.pg-thumbs .pg-thumb:hover { border-color: var(--blue-400); transform: translateY(-1px); }
.pg-thumbs .pg-thumb.active { border-color: var(--blue-600); box-shadow: 0 0 0 2px rgba(37,117,211,.18); }
.pg-thumbs .pg-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }

@media (max-width: 520px) {
  .pg-thumbs .pg-thumb { width: 52px; height: 52px; }
}

.product-detail-info { }

.product-detail-category {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blue-600);
  margin-bottom: var(--space-sm);
}

.product-detail-title {
  font-size: 1.75rem;
  margin-bottom: var(--space-sm);
}

.product-detail-sku {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: var(--space-lg);
}

.product-detail-desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--gray-700);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--gray-200);
}
.product-detail-desc img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 10px 0;
  display: block;
}
.product-detail-desc h2 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--navy-900);
  margin: 16px 0 8px;
}
.product-detail-desc h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy-900);
  margin: 12px 0 6px;
}
.product-detail-desc ul, .product-detail-desc ol {
  padding-left: 20px;
  margin: 8px 0;
}
.product-detail-desc li {
  margin-bottom: 4px;
}
.product-detail-desc p {
  margin: 8px 0;
}

.product-detail-price-block {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.product-detail-price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--navy-900);
  font-family: var(--font-mono);
}

.product-detail-price-label {
  font-size: 0.75rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== Product Social Share Bar ===== */
.product-share-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}
.product-share-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: var(--space-xs);
}
.product-share-buttons {
  display: flex;
  align-items: center;
  gap: 6px;
}
.share-btn {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.share-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.share-btn:active {
  transform: translateY(0);
}
.share-linkedin:hover {
  color: #0A66C2;
  border-color: #0A66C2;
  background: rgba(10,102,194,0.06);
}
.share-twitter:hover {
  color: #1d1d1d;
  border-color: #1d1d1d;
  background: rgba(29,29,29,0.06);
}
.share-facebook:hover {
  color: #1877F2;
  border-color: #1877F2;
  background: rgba(24,119,242,0.06);
}
.share-email:hover {
  color: var(--navy-700);
  border-color: var(--navy-700);
  background: rgba(15,35,64,0.06);
}
.share-copy:hover {
  color: var(--blue-600);
  border-color: var(--blue-600);
  background: rgba(37,117,211,0.06);
}

.quantity-selector {
  display: flex;
  align-items: center;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  overflow: hidden;
  width: fit-content;
  margin-bottom: var(--space-lg);
}

.qty-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--gray-700);
  background: var(--gray-50);
  transition: all var(--transition-fast);
}

.qty-btn:hover { background: var(--gray-200); color: var(--navy-900); }

.qty-input {
  width: 60px;
  height: 40px;
  text-align: center;
  border: none;
  border-left: 1px solid var(--gray-300);
  border-right: 1px solid var(--gray-300);
  font-weight: 600;
  font-size: 0.9375rem;
}

/* ===== Spec Table ===== */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
}

.spec-table th {
  text-align: left;
  padding: 12px var(--space-md);
  background: var(--navy-900);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.spec-table td {
  padding: 12px var(--space-md);
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.875rem;
}

.spec-table td:first-child {
  font-weight: 600;
  color: var(--gray-700);
  background: var(--gray-50);
}

.spec-table td:last-child {
  font-family: var(--font-mono);
  color: var(--navy-900);
  font-weight: 600;
}

/* ===== Cart Page ===== */
.cart-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--space-xl);
  align-items: start;
}

.cart-items {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.cart-item {
  display: grid;
  grid-template-columns: 80px 1fr auto auto auto;
  gap: var(--space-md);
  align-items: center;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--gray-200);
}

.cart-item:last-child { border-bottom: none; }

.cart-item-image {
  width: 80px;
  height: 80px;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cart-item-info { }
.cart-item-title { font-weight: 600; font-size: 0.9375rem; color: var(--navy-900); }
.cart-item-sku { font-family: var(--font-mono); font-size: 0.75rem; color: var(--gray-500); }

.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.cart-item-qty button {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-50);
  color: var(--gray-700);
  font-size: 1rem;
}

.cart-item-qty button:hover { background: var(--gray-200); }
.cart-item-qty input {
  width: 48px;
  height: 32px;
  text-align: center;
  border: none;
  border-left: 1px solid var(--gray-300);
  border-right: 1px solid var(--gray-300);
  font-weight: 600;
  font-size: 0.8125rem;
}

.cart-item-price {
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--navy-900);
  min-width: 90px;
  text-align: right;
}

.cart-item-remove {
  color: var(--gray-400);
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.cart-item-remove:hover { color: var(--danger); background: var(--danger-light); }

/* ===== Cart Summary ===== */
.cart-summary {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
}

.cart-summary h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--gray-200);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  font-size: 0.875rem;
  color: var(--gray-700);
}

.summary-row.total {
  border-top: 2px solid var(--gray-200);
  margin-top: var(--space-sm);
  padding-top: var(--space-md);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--navy-900);
  font-family: var(--font-mono);
}

.summary-row.total .summary-value { color: var(--blue-600); }

.summary-note {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-top: var(--space-md);
  padding: var(--space-sm);
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

/* ===== Checkout Page ===== */
.checkout-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--space-xl);
  align-items: start;
}

.checkout-form {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
}

.checkout-section {
  margin-bottom: var(--space-2xl);
}

.checkout-section:last-child { margin-bottom: 0; }

.checkout-section-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--gray-200);
}

.checkout-section-number {
  width: 28px;
  height: 28px;
  background: var(--navy-900);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 700;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

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

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

.form-field label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.form-field label .required { color: var(--danger); }

.form-field input,
.form-field select {
  padding: 10px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  color: var(--navy-900);
  background: var(--white);
  transition: border-color var(--transition-fast);
}

.form-field input:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(37, 117, 211, 0.12);
}

.form-field-error {
  font-size: 0.75rem;
  color: var(--danger);
  margin-top: 4px;
}

/* Payment method selector */
.payment-methods {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.payment-method {
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  cursor: pointer;
  text-align: center;
  transition: all var(--transition-fast);
}

.payment-method:hover { border-color: var(--blue-400); }

.payment-method.selected {
  border-color: var(--blue-600);
  background: rgba(37, 117, 211, 0.04);
}

.payment-method-icon { font-size: 1.5rem; margin-bottom: 6px; }
.payment-method-label { font-size: 0.8125rem; font-weight: 600; color: var(--gray-700); }

/* Stripe Elements container */
.stripe-element-container {
  padding: var(--space-md);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}

/* ===== Order Summary (Checkout) ===== */
.order-summary {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
}

.order-summary h3 {
  font-size: 1.125rem;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--gray-200);
}

.order-item {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: var(--space-sm);
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--gray-100);
}

.order-item:last-of-type { border-bottom: 1px solid var(--gray-200); margin-bottom: var(--space-sm); }

.order-item-image {
  width: 48px;
  height: 48px;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.order-item-info { }
.order-item-title { font-size: 0.8125rem; font-weight: 600; color: var(--navy-900); }
.order-item-qty { font-size: 0.75rem; color: var(--gray-500); }
.order-item-price { font-size: 0.8125rem; font-weight: 700; font-family: var(--font-mono); }

/* ===== Empty States ===== */
.empty-state {
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
}

.empty-state-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-lg);
  background: var(--gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
}

.empty-state h3 { font-size: 1.25rem; margin-bottom: var(--space-sm); }
.empty-state p { color: var(--gray-600); margin-bottom: var(--space-lg); }

/* ===== Footer ===== */
.site-footer {
  background: var(--navy-900);
  color: var(--gray-400);
  padding: var(--space-3xl) 0 var(--space-lg);
  margin-top: var(--space-4xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand h3 {
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.footer-brand p { font-size: 0.875rem; line-height: 1.7; max-width: 300px; }

.footer-col h4 {
  color: var(--white);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

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

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

.footer-col a {
  color: var(--gray-400);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-col a:hover { color: var(--cyan-300); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
}

.footer-certifications {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.cert-badge {
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--gray-400);
}

/* ===== Toast Notifications ===== */
.toast-container {
  position: fixed;
  top: 90px;
  right: var(--space-xl);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  background: var(--navy-900);
  color: var(--white);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  animation: slideInRight var(--transition-base) forwards;
  max-width: 360px;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.info { border-left: 4px solid var(--cyan-400); }

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOutRight {
  to { transform: translateX(100%); opacity: 0; }
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin-bottom: var(--space-lg);
}

.breadcrumb a { color: var(--gray-500); }
.breadcrumb a:hover { color: var(--blue-600); }
.breadcrumb-sep { color: var(--gray-300); }

/* ===== Page Header (inner pages) ===== */
.page-header {
  background: var(--navy-900);
  color: var(--white);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.page-header h1 { color: var(--white); margin-bottom: var(--space-sm); }
.page-header p { color: var(--gray-300); font-size: 1.0625rem; }

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
  .category-grid, .product-grid { grid-template-columns: repeat(2, 1fr); }
  .catalog-layout { grid-template-columns: 1fr; }
  .filters-sidebar { position: static; }
  .cart-layout, .checkout-layout { grid-template-columns: 1fr; }
  .product-detail-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-md); }
  .main-nav { display: none; }
  .mobile-menu-toggle { display: flex; }
  .hero h1 { font-size: 2rem; }
  .hero-stats { flex-direction: column; gap: var(--space-lg); }
  .category-grid, .product-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .payment-methods { grid-template-columns: 1fr; }
  .cart-item { grid-template-columns: 64px 1fr; }
  .cart-item-qty, .cart-item-price, .cart-item-remove { grid-column: 2; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-md); }
  .section { padding: var(--space-2xl) 0; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
}

/* ===== Loading Skeleton ===== */
.skeleton {
  background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== Print Styles ===== */
@media print {
  .site-header, .site-footer, .btn, .cart-item-remove { display: none !important; }
}

/* ===== Product Detail: New Sections ===== */
.product-detail-section {
  margin-top: var(--space-2xl);
}
.product-section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--gray-200);
}

/* RFQ Banner */
.rfq-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding: var(--space-xl) var(--space-2xl);
  background: linear-gradient(135deg, var(--navy-900), var(--navy-800));
  border-radius: var(--radius-lg);
  color: var(--white);
  flex-wrap: wrap;
}
.rfq-banner-content h3 {
  font-size: 1.25rem;
  color: var(--white);
  margin-bottom: var(--space-xs);
}
.rfq-banner-content p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.75);
  max-width: 480px;
}
.rfq-banner .btn-primary {
  background: var(--cyan-400);
  color: var(--navy-900);
  white-space: nowrap;
}
.rfq-banner .btn-primary:hover { background: var(--cyan-300); }

/* ===== "Can't find a product" CTA banner ===== */
.find-product-banner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-xl) var(--space-2xl);
  background: linear-gradient(135deg, var(--navy-800), var(--navy-700));
  background-image:
    radial-gradient(circle at 100% 0%, rgba(0,180,216,0.16), transparent 45%),
    linear-gradient(135deg, var(--navy-800), var(--navy-700));
  border-radius: var(--radius-lg);
  color: var(--white);
  flex-wrap: wrap;
}
.find-product-icon {
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(64, 201, 224, 0.16);
  color: var(--cyan-300);
}
.find-product-text {
  flex: 1 1 260px;
  min-width: 220px;
}
.find-product-text h3 {
  font-size: 1.15rem;
  color: var(--white);
  margin-bottom: var(--space-xs);
  letter-spacing: -0.01em;
}
.find-product-text p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.78);
  max-width: 560px;
  line-height: 1.6;
}
.find-product-banner .btn-primary {
  background: var(--cyan-400);
  color: var(--navy-900);
  white-space: nowrap;
}
.find-product-banner .btn-primary:hover {
  background: var(--cyan-300);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0,180,216,0.25);
}

@media (max-width: 720px) {
  .find-product-banner {
    flex-direction: column;
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
  }
  .find-product-text p { max-width: none; }
}

/* Benefits Grid */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}
.benefit-card {
  padding: var(--space-lg);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  transition: box-shadow 0.2s;
}
.benefit-card:hover { box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08); }
.benefit-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--navy-900);
  color: var(--cyan-400);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
}
.benefit-card h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-xs);
}
.benefit-card p {
  font-size: 0.8125rem;
  color: var(--gray-600);
  line-height: 1.5;
}

/* Application Detail Grid */
.application-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-md);
}
.application-detail-card {
  padding: var(--space-lg);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  transition: border-color 0.2s;
}
.application-detail-card:hover { border-color: var(--blue-500); }
.application-detail-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--blue-600);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
}
.application-detail-card h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-xs);
}
.application-detail-card p {
  font-size: 0.8125rem;
  color: var(--gray-600);
  line-height: 1.5;
}

/* FAQ Accordion */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
}
.faq-question {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--navy-900);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  font-family: var(--font-sans);
  transition: background 0.15s;
}
.faq-question:hover { background: var(--gray-50); }
.faq-icon { transition: transform 0.25s; flex-shrink: 0; color: var(--gray-500); }
.faq-icon.rotate { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 var(--space-lg);
}
.faq-answer.open {
  max-height: 300px;
  padding: 0 var(--space-lg) var(--space-md);
}
.faq-answer p {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* RFQ Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 22, 40, 0.6);
  backdrop-filter: blur(4px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}
.modal-box {
  background: var(--white);
  border-radius: var(--radius-lg);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}
.rfq-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--gray-200);
}
.rfq-modal-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy-900);
}
.rfq-close {
  background: none;
  border: none;
  font-size: 1.75rem;
  cursor: pointer;
  color: var(--gray-500);
  line-height: 1;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background 0.15s;
}
.rfq-close:hover { background: var(--gray-100); }
.rfq-form { padding: var(--space-xl); }
.rfq-product-info {
  padding: var(--space-md);
  background: var(--gray-50);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  font-size: 0.875rem;
}
.rfq-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.rfq-form .form-field { margin-bottom: var(--space-md); }
.rfq-form label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gray-600);
  margin-bottom: var(--space-xs);
}
.rfq-form input,
.rfq-form textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  color: var(--navy-900);
  background: var(--white);
  box-sizing: border-box;
}
.rfq-form input:focus,
.rfq-form textarea:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(37, 117, 211, 0.12);
}

/* SEO Content Block */
.seo-content-block {
  background: var(--gray-50);
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--gray-200);
}
.seo-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--navy-900);
  margin-bottom: var(--space-md);
}
.seo-intro {
  font-size: 1rem;
  color: var(--gray-700);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
}
.seo-subtitle {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-md);
}
.seo-types-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}
.seo-type-card {
  padding: var(--space-md) var(--space-lg);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
}
.seo-type-card h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-xs);
}
.seo-type-card p {
  font-size: 0.8125rem;
  color: var(--gray-600);
  line-height: 1.5;
}
.seo-benefit-list {
  list-style: none;
  padding: 0;
  margin-bottom: var(--space-2xl);
}
.seo-benefit-list li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.875rem;
  color: var(--gray-700);
  line-height: 1.6;
}
.seo-benefit-list strong {
  color: var(--navy-900);
  font-weight: 700;
}
.seo-app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}
.seo-app-item {
  padding: var(--space-md);
  border-left: 3px solid var(--blue-500);
  background: var(--white);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.seo-app-item h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-xs);
}
.seo-app-item p {
  font-size: 0.8125rem;
  color: var(--gray-600);
  line-height: 1.5;
}
.seo-faq-section { margin-top: var(--space-lg); }
.seo-faq-item {
  margin-bottom: var(--space-md);
}
.seo-faq-q {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: var(--space-xs);
}
.seo-faq-a {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* Application Areas (Homepage) */
.app-areas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-lg);
}
.app-area-card {
  padding: var(--space-lg);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  transition: background 0.2s, border-color 0.2s;
}
.app-area-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--cyan-400);
}
.app-area-icon {
  color: var(--cyan-400);
  margin-bottom: var(--space-sm);
}
.app-area-card h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-xs);
}
.app-area-card p {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
}

/* Customer Reviews (Homepage) */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
}
.review-card {
  padding: var(--space-lg) var(--space-xl);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  position: relative;
  transition: box-shadow 0.2s;
}
.review-card:hover { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08); }
.review-stars {
  display: flex;
  gap: 2px;
  margin-bottom: var(--space-sm);
}
.review-text {
  font-size: 0.875rem;
  color: var(--gray-700);
  line-height: 1.6;
  margin-bottom: var(--space-md);
  font-style: italic;
}
.review-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--navy-900);
  color: var(--cyan-400);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  flex-shrink: 0;
}
.review-name {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--navy-900);
}
.review-role {
  font-size: 0.75rem;
  color: var(--gray-600);
}
.review-date {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-xl);
  font-size: 0.6875rem;
  color: var(--gray-400);
  font-weight: 600;
}

/* Trust Badges Row (Homepage) */
.trust-badges-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-lg);
}
.trust-badge-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex: 1;
  min-width: 200px;
}
.trust-badge-item strong {
  display: block;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--navy-900);
}
.trust-badge-item span {
  display: block;
  font-size: 0.75rem;
  color: var(--gray-600);
}

/* Responsive */
@media (max-width: 768px) {
  .rfq-banner { flex-direction: column; text-align: center; }
  .benefits-grid, .application-detail-grid { grid-template-columns: 1fr; }
  .app-areas-grid { grid-template-columns: 1fr 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .trust-badges-row { flex-direction: column; }
  .seo-types-grid, .seo-app-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .app-areas-grid { grid-template-columns: 1fr; }
  .rfq-form .form-row { grid-template-columns: 1fr; }
}

/* ===== Product Photo ===== */
.product-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== Content Page ===== */
.page-content h2 {
  font-size: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--navy-900);
  font-weight: 700;
}
.page-content h3 {
  font-size: 1.125rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--navy-900);
  font-weight: 700;
}
.page-content p {
  margin-bottom: 1rem;
}
.page-content ul,
.page-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}
.page-content li {
  margin-bottom: 0.5rem;
}
.page-content a {
  color: var(--navy-700);
  text-decoration: underline;
}
.page-content strong {
  font-weight: 700;
  color: var(--navy-900);
}
.page-content em {
  font-style: italic;
}

/* ===== Volume / tier pricing ===== */
.unit-price-note { font-size: 0.72rem; font-weight: 500; color: var(--gray-500, #6B6B7B); }
.price-tiers { margin: 0 0 var(--space-md); padding: 12px 14px; border: 1px solid var(--gray-200, #e5e7eb); border-radius: 10px; background: var(--gray-50, #f8fafc); }
.price-tiers-title { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gray-600, #556); margin-bottom: 8px; }
.price-tiers-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.price-tiers-table tr { display: flex; justify-content: space-between; padding: 4px 0; border-bottom: 1px dashed var(--gray-200, #e5e7eb); }
.price-tiers-table tr:last-child { border-bottom: none; }
.price-tiers-table .tier-qty { color: var(--gray-700, #374151); font-weight: 500; }
.price-tiers-table .tier-price { font-weight: 700; color: var(--primary, #1559c9); }
.price-tiers-table tr.tier-base-row .tier-qty::after { content: ""; }
.product-price-volume { display: block; width: 100%; font-size: 0.7rem; font-weight: 600; color: #0a8f5b; margin-top: 2px; }
@media (max-width: 600px) { .price-tiers { padding: 10px 12px; } .price-tiers-table { font-size: 0.8125rem; } }