/* ==========================================================================
   IOO - Industrial Optics Online
   Industrial Vision Lighting Catalog
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --color-primary: #0B1F3A;
  --color-accent: #F59E0B;
  --color-accent-hover: #D97706;
  --color-bg: #F8F9FA;
  --color-card: #FFFFFF;
  --color-text: #1A1A2E;
  --color-text-muted: #6B7280;
  --color-border: #E5E7EB;
  --color-gray-light: #F3F4F6;

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

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

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }

.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.font-mono { font-family: var(--font-mono); }

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

.container-narrow {
  max-width: 960px;
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-primary);
  transition: box-shadow var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-logo {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.navbar-logo-main {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.navbar-logo-sub {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.navbar-links {
  display: none;
  gap: var(--space-xl);
}

.navbar-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition-fast);
}

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

.navbar-cta {
  display: none;
}

.navbar-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  cursor: pointer;
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #fff;
  transition: var(--transition-fast);
}

.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-primary);
  padding: var(--space-xl);
  z-index: 999;
}

.mobile-menu.active {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.mobile-menu a {
  font-size: 1.25rem;
  font-weight: 500;
  color: #fff;
  padding: var(--space-md) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu .btn {
  margin-top: var(--space-lg);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #fff;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

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

.btn-full {
  width: 100%;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Loading spinner */
.btn-loading {
  position: relative;
  color: transparent !important;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background-color: var(--color-primary);
  padding: var(--space-3xl) 0;
  overflow: hidden;
}

/* Grid pattern overlay */
.hero::before {
  content: '';
  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-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

.hero-badge::before {
  content: '● ';
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-md);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
  position: relative;
  display: inline-block;
}

.hero-subtitle::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
}

.hero-description {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-xl);
  max-width: 560px;
}

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

/* --------------------------------------------------------------------------
   Stats Bar
   -------------------------------------------------------------------------- */
.stats-bar {
  background-color: #fff;
  padding: var(--space-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stats-item-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stats-item-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Section Headers
   -------------------------------------------------------------------------- */
.section {
  padding: var(--space-3xl) 0;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.section-title {
  font-size: 1.75rem;
}

.section-link {
  font-weight: 500;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.section-link:hover {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Category Cards
   -------------------------------------------------------------------------- */
.categories-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.category-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
}

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

.category-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.category-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-accent);
}

.category-name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.category-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Features / Benefits
   -------------------------------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.feature-item {
  padding: var(--space-xl);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-accent);
  fill: none;
}

.feature-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Application Notes Cards
   -------------------------------------------------------------------------- */
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.article-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.article-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.article-image {
  height: 160px;
  background-color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.article-category {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  background-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
}

.article-content {
  padding: var(--space-lg);
}

.article-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.article-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.article-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
}

.article-link:hover {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   CTA Banner
   -------------------------------------------------------------------------- */
.cta-banner {
  background-color: var(--color-primary);
  padding: var(--space-2xl) 0;
}

.cta-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  align-items: flex-start;
}

.cta-title {
  font-size: 1.25rem;
  color: #fff;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background-color: var(--color-primary);
  padding: var(--space-3xl) 0 var(--space-xl);
  color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  max-width: 280px;
}

.footer-logo {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.footer-logo-main {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

.footer-logo-sub {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.5);
  text-transform: uppercase;
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.6;
}

.footer-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #fff;
  margin-bottom: var(--space-lg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

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

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

.footer-contact p {
  font-size: 0.875rem;
  margin-bottom: var(--space-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}

/* --------------------------------------------------------------------------
   Page Header (Breadcrumb pages)
   -------------------------------------------------------------------------- */
.page-header {
  background-color: var(--color-primary);
  padding: var(--space-2xl) 0;
}

.breadcrumb {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-md);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb span {
  margin: 0 var(--space-sm);
}

.page-title {
  font-size: 2rem;
  color: #fff;
}

.page-description {
  margin-top: var(--space-sm);
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
}

/* --------------------------------------------------------------------------
   Products Page
   -------------------------------------------------------------------------- */
.products-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  padding: var(--space-2xl) 0;
}

.filter-sidebar {
  display: block;
}

.filter-panel {
  display: none;
}

.filter-panel.active {
  display: block;
}

.filter-toggle-mobile {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  cursor: pointer;
  font-weight: 500;
}

.filter-panel {
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.filter-group {
  margin-bottom: var(--space-xl);
}

.filter-group:last-child {
  margin-bottom: 0;
}

.filter-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.filter-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: 0.9rem;
}

.filter-checkbox input {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
}

.ai-selector-card {
  background-color: var(--color-bg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
  margin-bottom: var(--space-xl);
}

.ai-selector-card h4 {
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.ai-selector-card p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.products-main {
  flex: 1;
}

.products-count {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.products-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.product-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
}

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

.product-image {
  height: 160px;
  background-color: var(--color-gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

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

.product-type {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: var(--color-primary);
  color: #fff;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

.product-name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.product-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.product-tag {
  font-size: 0.7rem;
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}

.product-card .btn {
  margin-top: var(--space-md);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-3xl);
  color: var(--color-text-muted);
}

.empty-state svg {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-lg);
  opacity: 0.4;
}

.empty-state h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Product Detail Page
   -------------------------------------------------------------------------- */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  padding: var(--space-2xl) 0;
}

.product-gallery {
  display: none;
}

.product-main-info {
  padding: 0;
}

.product-series-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.product-series-name {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.product-application-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.app-tag {
  font-size: 0.75rem;
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-muted);
}

.product-description {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.compatible-controllers {
  margin-bottom: var(--space-xl);
}

.compatible-controllers h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.controllers-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.controller-chip {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}

.product-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Tabs */
.product-tabs {
  margin-top: var(--space-2xl);
}

.tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-btn {
  padding: var(--space-md) var(--space-lg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--color-text);
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.tab-content {
  display: none;
  padding: var(--space-xl) 0;
}

.tab-content.active {
  display: block;
}

/* Specifications Table */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.specs-table th {
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 500;
  text-align: left;
  padding: var(--space-md);
}

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

.specs-table tr:nth-child(even) td {
  background-color: var(--color-bg);
}

.specs-table .model-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* Downloads */
.downloads-grid {
  display: grid;
  gap: var(--space-xl);
}

.download-group {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.download-group-header {
  background-color: var(--color-bg);
  padding: var(--space-md);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.875rem;
}

.download-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
}

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

.download-icon {
  width: 32px;
  height: 32px;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-icon svg {
  width: 16px;
  height: 16px;
  stroke: var(--color-text-muted);
}

.download-name {
  font-size: 0.875rem;
}

.download-btn {
  font-size: 0.75rem;
  padding: var(--space-xs) var(--space-md);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.download-btn:hover {
  background-color: var(--color-primary);
  color: #fff;
}

/* --------------------------------------------------------------------------
   Quote Form
   -------------------------------------------------------------------------- */
.quote-form-section {
  padding: var(--space-2xl) 0 var(--space-3xl);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.form-card {
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.form-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.form-label .required {
  color: #DC2626;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: #fff;
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: #DC2626;
}

.form-error {
  font-size: 0.75rem;
  color: #DC2626;
  margin-top: var(--space-xs);
  display: none;
}

.form-error.visible {
  display: block;
}

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

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

.radio-group {
  display: flex;
  gap: var(--space-lg);
}

.radio-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.radio-option input {
  accent-color: var(--color-primary);
}

.si-partner-section {
  margin-top: var(--space-lg);
  padding: var(--space-lg);
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  display: none;
}

.si-partner-section.visible {
  display: block;
}

.form-submit {
  margin-top: var(--space-xl);
}

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

/* Success State */
.form-success {
  text-align: center;
  padding: var(--space-3xl);
  display: none;
}

.form-success.visible {
  display: block;
}

.success-icon {
  width: 80px;
  height: 80px;
  background-color: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-xl);
}

.success-icon svg {
  width: 40px;
  height: 40px;
  stroke: #fff;
}

.success-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.success-message {
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}

.success-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 300px;
  margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Partners Page
   -------------------------------------------------------------------------- */
.partners-benefits {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-3xl);
}

.benefit-card {
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.benefit-icon {
  width: 48px;
  height: 48px;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.benefit-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
}

.benefit-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.benefit-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.partners-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.partners-why {
  padding: var(--space-xl);
}

.why-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.why-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.why-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background-color: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.why-icon svg {
  width: 14px;
  height: 14px;
  stroke: #fff;
}

.why-text {
  font-size: 0.95rem;
  line-height: 1.5;
}

.partners-apply h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xl);
}

.partner-form .form-group {
  margin-bottom: var(--space-md);
}

.partner-form .btn {
  width: 100%;
  margin-top: var(--space-lg);
}

.sign-in-link {
  text-align: center;
  margin-top: var(--space-lg);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.sign-in-link span {
  color: var(--color-primary);
  opacity: 0.5;
  cursor: not-allowed;
}

/* --------------------------------------------------------------------------
   About Page
   -------------------------------------------------------------------------- */
.about-content {
  max-width: 720px;
}

.about-content p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.brands-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.brand-card {
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.brand-card.pending {
  border-style: dashed;
}

.brand-name {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.brand-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.contact-section {
  margin-top: var(--space-3xl);
  padding: var(--space-2xl);
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.contact-item:last-child {
  margin-bottom: 0;
}

.contact-icon {
  width: 40px;
  height: 40px;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Resources Page
   -------------------------------------------------------------------------- */
.resources-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  padding: var(--space-2xl) 0;
}

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */

/* Tablet: 768px+ */
@media (min-width: 768px) {
  h1 { font-size: 3rem; }

  .hero-title {
    font-size: 3.5rem;
  }

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

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

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

  .cta-content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }

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

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

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

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

  .partners-content {
    grid-template-columns: 1fr 1fr;
  }

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

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

/* Desktop: 1024px+ */
@media (min-width: 1024px) {
  .navbar-links {
    display: flex;
  }

  .navbar-cta {
    display: block;
  }

  .navbar-toggle {
    display: none;
  }

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

  .hero-title {
    font-size: 4rem;
  }

  .categories-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .products-layout {
    grid-template-columns: 260px 1fr;
  }

  .filter-sidebar {
    display: block;
    position: sticky;
    top: 96px;
    height: fit-content;
  }

  .filter-panel {
    display: block;
  }

  .filter-toggle-mobile {
    display: none;
  }

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

  .product-detail-layout {
    grid-template-columns: 40% 1fr;
  }

  .product-gallery {
    display: block;
  }

  .product-actions {
    flex-direction: row;
  }

  .product-actions .btn {
    flex: 1;
  }

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

  .success-actions {
    flex-direction: row;
    justify-content: center;
  }
}

/* Large Desktop: 1280px+ */
@media (min-width: 1280px) {
  .container {
    padding: 0 var(--space-2xl);
  }
}