* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  :root {
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --accent-color: #dc2626;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-light: #ffffff;
    --border-color: #e5e5e5;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 8px;
    --max-width: 1200px;
  }
  
  body {
    font-family: "Inter", sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--secondary-color);
    overflow-x: hidden;
  }
  
  .container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
  }
  
  /* Animations */
  @keyframes fadeUp {
    from {
      opacity: 0;
      transform: translateY(30px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  @keyframes slideRight {
    from {
      opacity: 0;
      transform: translateX(-30px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
  
  @keyframes slideLeft {
    from {
      opacity: 0;
      transform: translateX(30px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
  
  @keyframes bounce {
    0%,
    20%,
    50%,
    80%,
    100% {
      transform: translateY(0);
    }
    40% {
      transform: translateY(-10px);
    }
    60% {
      transform: translateY(-5px);
    }
  }
  
  .animate-fade-up {
    opacity: 0;
    animation: fadeUp 0.8s ease-out forwards;
  }
  
  .animate-slide-right {
    opacity: 0;
    animation: slideRight 0.8s ease-out forwards;
  }
  
  .animate-slide-left {
    opacity: 0;
    animation: slideLeft 0.8s ease-out forwards;
  }
  
  .animate-bounce {
    animation: bounce 2s infinite;
  }
  
  .delay-1 {
    animation-delay: 0.2s;
  }
  .delay-2 {
    animation-delay: 0.4s;
  }
  .delay-3 {
    animation-delay: 0.6s;
  }
  
  /* Header */
  .header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
  }
  
  .navbar {
    padding: 1rem 0;
  }
  
  .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
  }
  
  .nav-logo {
    display: flex;
    align-items: center;
  }
  
  .logo-img {
    height: 50px;
    width: auto;
    border-radius: 50%;
    border: 2px solid var(--accent-color);
    padding: 5px;
    background: white;
    transition: var(--transition);
  }
  
  .logo-img:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(220, 38, 38, 0.3);
  }
  
  .nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
  }
  
  .nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }
  
  .nav-link:hover,
  .nav-link.active {
    color: var(--accent-color);
  }
  
  .dropdown {
    position: relative;
  }
  
  .dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
  }
  
  .dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  
  .dropdown-content a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
  }
  
  .dropdown-content a:hover {
    background: #f8f9fa;
    color: var(--accent-color);
  }
  
  .nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
  }
  
  .cart-icon {
    position: relative;
    color: var(--text-primary);
    font-size: 1.2rem;
    transition: var(--transition);
  }
  
  .cart-icon:hover {
    color: var(--accent-color);
  }
  
  .cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
  }
  
  .hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
  }
  
  .hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
  }
  
  .hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
  }
  
  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
  }
  
  .mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.9);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .mobile-menu.active {
    opacity: 1;
    visibility: visible;
  }
  
  .mobile-menu-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
  }
  
  .mobile-link {
    display: block;
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    margin: 1rem 0;
    transition: var(--transition);
  }
  
  .mobile-link:hover {
    color: var(--accent-color);
  }
  
  .mobile-dropdown-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    margin: 1rem 0;
    cursor: pointer;
    transition: var(--transition);
  }
  
  .mobile-dropdown-btn:hover {
    color: var(--accent-color);
  }
  
  .mobile-dropdown-content {
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
  }
  
  .mobile-dropdown-content.active {
    max-height: 300px;
  }
  
  .mobile-dropdown-content a {
    display: block;
    color: #ccc;
    text-decoration: none;
    font-size: 1.2rem;
    margin: 0.5rem 0;
    transition: var(--transition);
  }
  
  .mobile-dropdown-content a:hover {
    background: #f8f9fa;
    color: var(--accent-color);
  }
  
  /* Hero Section */
  .hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 96px;
    overflow: hidden;
  }
  
  .hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
  }
  
  .hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1;
  }
  
  .hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
  }
  
  .hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.2;
  }
  
  .text-accent {
    color: var(--accent-color);
  }
  
  .hero-description {
    font-size: 1.25rem;
    color: #e5e5e5;
    margin-bottom: 2rem;
    max-width: 600px;
  }
  
  .hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
  }
  
  .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
  }
  
  .btn-primary {
    background: var(--accent-color);
    color: white;
  }
  
  .btn-primary:hover {
    background: #b91c1c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
  
  .btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
  }
  
  .btn-secondary:hover {
    background: white;
    color: var(--text-primary);
  }
  
  .btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
  }
  
  .btn-outline:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
  }
  
  .scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: white;
    font-size: 0.9rem;
  }
  
  /* About Section */
  .about-section {
    padding: 6rem 0;
    background: #f8f9fa;
  }
  
  .about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }
  
  .section-tag {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
  }
  
  .section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
  }
  
  .about-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
  }
  
  .experience-badge {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: var(--accent-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    margin-top: 2rem;
  }
  
  .experience-number {
    font-size: 2rem;
    font-weight: 800;
  }
  
  .experience-text {
    font-weight: 600;
  }
  
  .about-img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
  }
  
  /* Features Section */
  .features-section {
    padding: 6rem 0;
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
  }
  
  .feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: var(--border-radius);
    background: white;
    box-shadow: var(--shadow);
    transition: var(--transition);
  }
  
  .feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
  }
  
  .feature-icon {
    width: 80px;
    height: 80px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
  }
  
  .feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
  }
  
  .feature-description {
    color: var(--text-secondary);
  }
  
  /* Popular Parts Section */
  .popular-parts-section {
    padding: 6rem 0;
    background: #f8f9fa;
  }
  
  .section-header {
    text-align: center;
    margin-bottom: 4rem;
  }
  
  .section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
  }
  
  .products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
  }
  
  .product-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
  }
  
  .product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
  }
  
  .product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
  }
  
  .product-info {
    padding: 1.5rem;
  }
  
  .product-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
  }
  
  .product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 1rem;
  }
  
  .product-actions {
    display: flex;
    gap: 0.5rem;
  }
  
  .btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    flex: 1;
  }
  
  /* Reviews Section */
  .reviews-section {
    padding: 6rem 0;
  }
  
  .reviews-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-bottom: 4rem;
  }
  
  .stat-item {
    text-align: center;
  }
  
  .stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent-color);
  }
  
  .stat-label {
    color: var(--text-secondary);
    font-weight: 500;
  }
  
  .reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
  }
  
  .review-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
  }
  
  .review-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
  
  .review-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
  }
  
  .reviewer-avatar {
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1.2rem;
  }
  
  .reviewer-info h4 {
    font-weight: 600;
    margin-bottom: 0.25rem;
  }
  
  .review-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
  }
  
  .review-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
  }
  
  .star {
    color: #fbbf24;
  }
  
  .star.empty {
    color: #e5e5e5;
  }
  
  .review-product {
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
  }
  
  .review-text {
    color: var(--text-secondary);
    line-height: 1.6;
  }
  
  .reviews-actions {
    text-align: center;
  }
  
  /* Footer */
  .footer {
    background: var(--primary-color);
    color: white;
    padding: 4rem 0 2rem;
  }
  
  .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
  }
  
  .footer-logo-img {
    height: 60px;
    width: auto;
    border-radius: 50%;
    border: 2px solid var(--accent-color);
    padding: 5px;
    background: white;
    margin-bottom: 1rem;
  }
  
  .footer-description {
    color: #ccc;
    line-height: 1.6;
  }
  
  .footer-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
  }
  
  .footer-links {
    list-style: none;
  }
  
  .footer-links li {
    margin-bottom: 0.75rem;
  }
  
  .footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
  }
  
  .footer-links a:hover {
    color: var(--accent-color);
  }
  
  .newsletter-text {
    color: #ccc;
    margin-bottom: 1rem;
  }
  
  .newsletter-form {
    display: flex;
    gap: 0.5rem;
  }
  
  .newsletter-input {
    flex: 1;
    padding: 0.75rem;
    border: none;
    border-radius: var(--border-radius);
    background: #333;
    color: white;
  }
  
  .newsletter-input::placeholder {
    color: #999;
  }
  
  .newsletter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
  }
  
  .newsletter-btn:hover {
    background: #b91c1c;
  }
  
  .footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    color: #999;
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    .hamburger {
      display: flex;
    }
  
    .nav-menu {
      display: none;
    }
  
    .hero-title {
      font-size: 2.5rem;
    }
  
    .hero-actions {
      flex-direction: column;
      align-items: flex-start;
    }
  
    .about-content {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
  
    .features-grid {
      grid-template-columns: 1fr;
    }
  
    .reviews-stats {
      gap: 2rem;
    }
  
    .stat-number {
      font-size: 2rem;
    }
  
    .newsletter-form {
      flex-direction: column;
    }
  }
  
  @media (max-width: 480px) {
    .container {
      padding: 0 15px;
    }
  
    .hero-title {
      font-size: 2rem;
    }
  
    .section-title {
      font-size: 2rem;
    }
  
    .reviews-stats {
      flex-direction: column;
      gap: 1rem;
    }
  }
  
  /* Product Detail Styles */
  .product-detail {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    overflow-y: auto;
  }
  
  .product-detail.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
  }
  
  .product-detail-content {
    background: white;
    border-radius: var(--border-radius);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
  }
  
  .product-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
  }
  
  .close-detail {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
  }
  
  .product-detail-body {
    padding: 2rem;
  }
  
  .product-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
  }
  
  .product-images img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius);
  }
  
  .quantity-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
  }
  
  .quantity-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
  }
  
  .quantity-btn:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
  }
  
  .quantity-input {
    width: 60px;
    text-align: center;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
  }
  
  /* Pagination */
  .pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 3rem;
  }
  
  .page-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    color: var(--text-primary);
  }
  
  .page-btn:hover,
  .page-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
  }
  
  main {
    padding-top: 96px; /* Header height */
  }
  
  .page-header {
    padding: 4rem 0;
    text-align: center;
    background-color: #f8f9fa;
  }