/* ===== MODERN KARANLIK TEMA CSS ===== */

/* CSS Variables - Karanlık Tema */
:root {
  /* Ana Renkler */
  --primary-color: #00d4ff;
  --secondary-color: #0099cc;
  --accent-color: #ff6b35;
  
  /* Karanlık Tema Renkleri */
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --bg-card: #1e1e1e;
  --bg-header: rgba(10, 10, 10, 0.95);
  --bg-footer: #0f0f0f;
  
  /* Metin Renkleri */
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #808080;
  --text-accent: #00d4ff;
  
  /* Border ve Gölgeler */
  --border-color: #333333;
  --border-light: #404040;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== HEADER VE NAVIGATION ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-normal);
}

.navbar {
  padding: var(--spacing-sm) 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: var(--font-size-xl);
  transition: var(--transition-fast);
}

.nav-logo:hover {
  color: var(--primary-color);
  transform: translateY(-2px);
}

.nav-logo .icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
  background: rgba(0, 212, 255, 0.1);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition-fast);
  transform: translateX(-50%);
}

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

.mobile-menu-button {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1001;
  overflow: hidden;
}

.mobile-menu-button:hover {
  background: var(--bg-tertiary);
  color: var(--primary-color);
  transform: scale(1.05);
}

.mobile-menu-button:active {
  transform: scale(0.95);
}

.mobile-menu-button .icon {
  width: 24px;
  height: 24px;
  transition: var(--transition-fast);
}

.mobile-menu-button:hover .icon {
  transform: rotate(90deg);
}

/* Mobile menu button pulse animation */
@keyframes buttonPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(0, 212, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 212, 255, 0);
  }
}

.mobile-menu-button:hover {
  animation: buttonPulse 1.5s infinite;
}

/* Ripple effect */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.3);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg);
  flex-direction: column;
  gap: var(--spacing-md);
  transform: translateY(-100%);
  opacity: 0;
  transition: var(--transition-normal);
  z-index: 1000;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  max-height: calc(100vh - 80px);
  overflow-y: auto;
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  display: flex;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.mobile-menu-header h3 {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0;
}

.mobile-menu-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu-close:hover {
  background: var(--bg-tertiary);
  color: var(--primary-color);
  transform: scale(1.05);
}

.mobile-menu-close .icon {
  width: 24px;
  height: 24px;
}

.mobile-menu-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.mobile-menu-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  font-weight: 500;
  font-size: var(--font-size-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 1px solid transparent;
  position: relative;
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--primary-color);
  background: var(--bg-tertiary);
  border-color: var(--primary-color);
  transform: translateX(8px);
}

.mobile-menu a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary-color);
  transform: scaleY(0);
  transition: var(--transition-fast);
}

.mobile-menu a:hover::before,
.mobile-menu a.active::before {
  transform: scaleY(1);
}

/* ===== MAIN CONTENT ===== */
main {
  margin-top: 80px;
  min-height: calc(100vh - 80px);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ===== HERO SECTION ===== */
.hero {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, var(--font-size-5xl));
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 1s ease;
}

.hero p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  animation: fadeInUp 1s ease 0.2s both;
}

/* ===== CARDS CONTAINER ===== */
.cards-container {
  padding: var(--spacing-2xl) 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.6s ease;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transform: scaleX(0);
  transition: var(--transition-normal);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--primary-color);
}

.card:hover::before {
  transform: scaleX(1);
}

.card .icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  object-fit: cover;
  transition: var(--transition-normal);
}

.card:hover .icon {
  transform: scale(1.1);
}

.card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== HERO IMAGE ===== */
.hero-image {
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

.hero-image img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

/* ===== PAGE HEADER ===== */
.page-header {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  padding: var(--spacing-2xl) 0;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
}

.page-header .icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  object-fit: cover;
  box-shadow: var(--shadow-md);
}

.page-header h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* ===== PRODUCTS GRID ===== */
.products-grid {
  padding: var(--spacing-2xl) 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
  animation: fadeInUp 0.6s ease;
  position: relative;
  text-decoration: none;
  color: var(--text-primary);
  display: block;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transform: scaleX(0);
  transition: var(--transition-normal);
  z-index: 1;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--primary-color);
  text-decoration: none;
  color: var(--text-primary);
}

.product-card:hover::before {
  transform: scaleX(1);
}

.product-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: var(--transition-normal);
}

.product-card:hover img {
  transform: scale(1.05);
}

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

.product-info h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.product-info p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

/* Remove button styles since we're not using them anymore */
.learn-more {
  display: none;
}

/* No products message */
.no-products {
    grid-column: 1 / -1;
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.no-products p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin: 0;
}

/* ===== PARTS GRID ===== */
.parts-grid {
  padding: var(--spacing-2xl) 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.part-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
  animation: fadeInUp 0.6s ease;
  position: relative;
  text-decoration: none;
  color: var(--text-primary);
  display: block;
}

.part-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transform: scaleX(0);
  transition: var(--transition-normal);
  z-index: 1;
}

.part-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--primary-color);
  text-decoration: none;
  color: var(--text-primary);
}

.part-card:hover::before {
  transform: scaleX(1);
}

.part-card iframe {
  width: 100%;
  height: 300px;
  border: none;
  transition: var(--transition-normal);
}

.part-card:hover iframe {
  transform: scale(1.02);
}

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

.part-info h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.part-info p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

/* ===== ROBOT CONTENT ===== */
/* Bu bölüm kaldırıldı - artık products-grid kullanılıyor */

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-footer);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

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

.footer-section h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.footer-section p,
.footer-section li {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

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

.footer-section li {
  margin-bottom: var(--spacing-xs);
}

.contact-info p {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.contact-info i {
  color: var(--primary-color);
  width: 16px;
  height: 16px;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: var(--shadow-md);
  }
  50% {
    box-shadow: var(--shadow-md), var(--shadow-glow);
  }
}

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

/* Desktop styles - hide mobile menu, show desktop navigation */
@media (min-width: 769px) {
  .nav-links {
    display: flex;
  }
  
  .mobile-menu-button {
    display: none !important;
  }
  
  .mobile-menu {
    display: none !important;
  }
  
  .mobile-menu-backdrop {
    display: none !important;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-button {
    display: flex;
  }
  
  .mobile-menu {
    display: none;
  }
  
  .mobile-menu-backdrop {
    display: block;
  }
  
  .cards-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .parts-grid {
    grid-template-columns: 1fr;
  }
  
     /* Robot content artık products-grid kullanıyor */
  
  .specs-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 var(--spacing-sm);
  }
  
  .mobile-menu-button {
    width: 48px;
    height: 48px;
  }
  
  .mobile-menu-button .icon {
    width: 28px;
    height: 28px;
  }
  
  .mobile-menu {
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
  }
  
  .mobile-menu-header h3 {
    font-size: var(--font-size-lg);
  }
  
  .mobile-menu-close {
    width: 48px;
    height: 48px;
  }
  
  .mobile-menu-close .icon {
    width: 28px;
    height: 28px;
  }
  
  .mobile-menu a {
    padding: var(--spacing-lg);
    font-size: var(--font-size-xl);
    min-height: 56px;
  }
  
  .hero {
    padding: var(--spacing-xl) 0;
  }
  
  .hero h1 {
    font-size: var(--font-size-3xl);
  }
  
  .page-header h1 {
    font-size: var(--font-size-2xl);
  }
  
  .cards-container,
  .products-grid,
  .parts-grid {
    padding: var(--spacing-xl) var(--spacing-sm);
  }
  
  /* Detail pages mobile styles */
  .product-header-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .product-info h1 {
    font-size: var(--font-size-2xl);
  }
  
  .details-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  .video-grid {
    grid-template-columns: 1fr;
  }
  
  .related-grid {
    grid-template-columns: 1fr;
  }
  
  .breadcrumb {
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }
  
  .breadcrumb-item {
    font-size: var(--font-size-sm);
  }
}

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

/* Focus styles for accessibility */
a:focus,
button:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* ===== PRINT STYLES ===== */
@media print {
  .header,
  .footer,
  .mobile-menu-button {
    display: none;
  }
  
  .card,
  .product-card,
  .part-card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
  .hero {
    background: white;
    color: black;
  }
}

/* ===== DETAIL PAGES ===== */

/* Breadcrumb Navigation */
.breadcrumb-nav {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) 0;
  margin-top: 80px;
}

.breadcrumb {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--spacing-sm);
  align-items: center;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
}

.breadcrumb-item:not(:last-child)::after {
  content: '>';
  color: var(--text-muted);
  margin-left: var(--spacing-sm);
}

.breadcrumb-item a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 600;
}

/* Product Header */
.product-header {
  padding: var(--spacing-2xl) 0;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.product-header-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.product-main-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.product-main-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: var(--transition-normal);
}

.product-main-image:hover img {
  transform: scale(1.05);
}

.product-info h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.product-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.product-meta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.meta-item {
  display: flex;
  gap: var(--spacing-sm);
}

.meta-label {
  color: var(--text-muted);
  font-weight: 500;
  min-width: 80px;
}

.meta-value {
  color: var(--text-primary);
  font-weight: 600;
}

/* Product Details */
.product-details {
  padding: var(--spacing-2xl) 0;
}

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

.specifications-section,
.features-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.specifications-section h2,
.features-section h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.specifications-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.spec-item {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-light);
}

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

.spec-label {
  color: var(--text-secondary);
  font-weight: 500;
}

.spec-value {
  color: var(--text-primary);
  font-weight: 600;
}

.features-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-light);
}

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

.feature-icon {
  color: var(--primary-color);
  font-weight: bold;
  font-size: var(--font-size-lg);
}

.feature-text {
  color: var(--text-secondary);
}

/* 3D Model Section */
.model-section {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-secondary);
}

.model-section h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  color: var(--primary-color);
}

.model-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

/* Image Gallery */
.image-gallery {
  padding: var(--spacing-2xl) 0;
}

.image-gallery h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  color: var(--primary-color);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: var(--transition-normal);
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.gallery-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: var(--transition-normal);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

/* Video Section */
.video-section {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-secondary);
}

.video-section h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  color: var(--primary-color);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-lg);
}

.video-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.video-item h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.video-container {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  border-radius: var(--radius-md);
  overflow: hidden;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* Related Products */
.related-products {
  padding: var(--spacing-2xl) 0;
}

.related-products h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  color: var(--primary-color);
}

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

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: var(--text-primary);
  transition: var(--transition-normal);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--primary-color);
  text-decoration: none;
  color: var(--text-primary);
}

.related-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition-normal);
}

.related-card:hover img {
  transform: scale(1.05);
}

.related-card h3 {
  padding: var(--spacing-md);
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
}

/* Lightbox */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 10000;
}

.lightbox-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox-caption {
  position: absolute;
  bottom: -40px;
  left: 0;
  right: 0;
  text-align: center;
  color: white;
  font-size: var(--font-size-sm);
  background: rgba(0, 0, 0, 0.7);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
}

.lightbox-close {
  position: absolute;
  top: -50px;
  right: 0;
  background: none;
  border: none;
  color: white;
  font-size: 2rem;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ===== UTILITY CLASSES ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.text-primary {
  color: var(--primary-color);
}

.text-secondary {
  color: var(--text-secondary);
}

.bg-card {
  background: var(--bg-card);
}

.border-primary {
  border-color: var(--primary-color);
}

.shadow-glow {
  box-shadow: var(--shadow-glow);
}