:root {
    --primary: #6200ea;
    --primary-light: #9d46ff;
    --primary-dark: #0a00b6;
    --secondary: #ff6e40;
    --secondary-light: #ffa06d;
    --secondary-dark: #c53d13;
    --text-dark: #212121;
    --text-light: #f5f5f5;
    --text-gray: #757575;
    --background-light: #ffffff;
    --background-dark: #121212;
    --background-gray: #f5f5f5;
    --border-light: #e0e0e0;
    --success: #4caf50;
    --error: #f44336;
  }

  /* Global styles */
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
  }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
  }

  .bg-image {
    position: absolute;
    z-index: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.1;
    top: 0;
    left: 0;
  }

  section {
    padding: 80px 0;
    position: relative;
  }

  h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-dark);
  }

  h1 {
    font-size: 3.5rem;
    margin-bottom: 30px;
  }

  h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    text-align: center;
  }

  h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
  }

  p {
    line-height: 1.6;
    margin-bottom: 20px;
    color: var(--text-dark);
  }

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

  button, .btn-primary, .btn-category, .btn-bundle, .btn-add-to-cart, .btn-submit {
    cursor: pointer;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
  }

  button:focus, input:focus {
    outline: 2px solid var(--primary);
  }

  /* Hero section */
  .hero-section {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--background-dark);
    color: var(--text-light);
    padding: 100px 0;
  }

  .hero-section h1 {
    color: var(--text-light);
    font-size: 4rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
  }

  .hero-subtitle {
    font-size: 1.5rem;
    max-width: 800px;
    margin: 0 auto 40px;
    color: var(--text-light);
  }

  /* Categories section */
  .categories-section {
    background-color: var(--background-light);
  }

  .categories-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 30px;
  }

  @media (min-width: 768px) {
    .categories-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .categories-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .category-card {
    background-color: var(--background-light);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
  }

  .category-card:hover {
    transform: translateY(-10px);
  }

  .category-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
  }

  .category-card h3 {
    padding: 20px 20px 10px;
  }

  .category-card p {
    padding: 0 20px 20px;
    color: var(--text-gray);
  }

  .btn-category {
    display: block;
    background-color: var(--primary);
    color: var(--text-light);
    text-align: center;
    padding: 12px 20px;
    margin: 0 20px 20px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
  }

  .btn-category:hover {
    background-color: var(--primary-dark);
  }

  /* Featured products section */
  .featured-products {
    background-color: var(--background-gray);
    position: relative;
  }

  .products-slider {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 30px;
    margin-top: 40px;
  }

  @media (min-width: 768px) {
    .products-slider {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .products-slider {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  .product-card {
    background-color: var(--background-light);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    transition: transform 0.3s ease;
  }

  .product-card:hover {
    transform: translateY(-10px);
  }

  .product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--secondary);
    color: var(--text-light);
    padding: 5px 10px;
    border-radius: 4px;
    font-weight: 600;
    z-index: 1;
  }

  .product-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
  }

  .product-card h3 {
    padding: 20px 20px 10px;
  }

  .product-description {
    padding: 0 20px;
    color: var(--text-gray);
  }

  .product-features {
    display: flex;
    flex-wrap: wrap;
    padding: 0 20px 20px;
    gap: 10px;
  }

  .product-features span {
    background-color: var(--background-gray);
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.9rem;
    color: var(--text-dark);
  }

  .product-features i {
    color: var(--primary);
    margin-right: 5px;
  }

  .btn-add-to-cart {
    display: block;
    width: calc(100% - 40px);
    margin: 0 20px 20px;
    padding: 12px 20px;
    background-color: var(--primary);
    color: var(--text-light);
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
  }

  .btn-add-to-cart:hover {
    background-color: var(--primary-dark);
  }

  .btn-add-to-cart i {
    margin-right: 10px;
  }

  /* Tech features section */
  .tech-features {
    background-color: var(--background-light);
  }

  .tech-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
  }

  @media (min-width: 768px) {
    .tech-content {
      flex-direction: row;
      align-items: center;
    }
  }

  .tech-text {
    flex: 1;
  }

  .tech-image {
    flex: 1;
  }

  .tech-image img {
    border-radius: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  }

  .tech-list {
    list-style: none;
    margin-bottom: 30px;
  }

  .tech-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
  }

  .tech-list i {
    color: var(--primary);
    margin-right: 15px;
    font-size: 1.2rem;
  }

  .btn-primary {
    display: inline-block;
    background-color: var(--primary);
    color: var(--text-light);
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
  }

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

  /* Collection grid section */
  .collection-grid {
    background-color: var(--background-gray);
  }

  .section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.2rem;
  }

  .filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
  }

  .filter-btn {
    background-color: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 10px 20px;
    border-radius: 30px;
  }

  .filter-btn.active, .filter-btn:hover {
    background-color: var(--primary);
    color: var(--text-light);
  }

  .products-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 30px;
  }

  @media (min-width: 768px) {
    .products-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .products-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  .product-item {
    background-color: var(--background-light);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
  }

  .product-item:hover {
    transform: translateY(-10px);
  }

  .product-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
  }

  .product-item h3 {
    padding: 20px 20px 5px;
  }

  .product-item p {
    padding: 0 20px;
    color: var(--text-gray);
    margin-bottom: 10px;
  }

  .price {
    display: block;
    padding: 0 20px 15px;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary);
  }

  /* Accessories bundle section */
  .accessories-bundle {
    background-color: var(--background-dark);
    position: relative;
    color: var(--text-light);
  }

  .accessories-bundle h2, 
  .accessories-bundle .section-intro {
    color: var(--text-light);
  }

  .bundle-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 50px;
  }

  @media (min-width: 768px) {
    .bundle-cards {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .bundle-cards {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  .bundle-card {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 30px;
    backdrop-filter: blur(10px);
    position: relative;
    transition: transform 0.3s ease;
  }

  .bundle-card:hover {
    transform: translateY(-10px);
  }

  .bundle-card.featured {
    background-color: rgba(98, 0, 234, 0.2);
    border: 2px solid var(--primary);
  }

  .bundle-badge {
    position: absolute;
    top: -15px;
    right: 30px;
    background-color: var(--secondary);
    color: var(--text-light);
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
  }

  .bundle-card h3 {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.8rem;
  }

  .bundle-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
  }

  .bundle-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .bundle-item img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 10px;
  }

  .bundle-price {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
  }

  .price-old {
    text-decoration: line-through;
    color: var(--text-gray);
    font-size: 1.1rem;
  }

  .price-new {
    color: var(--secondary);
    font-size: 1.8rem;
    font-weight: 700;
  }

  .btn-bundle {
    display: block;
    width: 100%;
    background-color: var(--secondary);
    color: var(--text-light);
    padding: 15px;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
  }

  .btn-bundle:hover {
    background-color: var(--secondary-dark);
  }

  /* Stands showcase section */
  .stands-showcase {
    background-color: var(--background-light);
  }

  .showcase-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
  }

  .stands-gallery {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  @media (min-width: 768px) {
    .stands-gallery {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .stands-gallery {
      grid-template-columns: repeat(3, 1fr);
    }

    .gallery-item.large {
      grid-column: span 2;
    }
  }

  .gallery-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  }

  .gallery-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.5s ease;
  }

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

  .item-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 20px;
    color: var(--text-light);
    transform: translateY(70px);
    transition: transform 0.3s ease;
  }

  .gallery-item:hover .item-info {
    transform: translateY(0);
  }

  .item-info h3, .item-info p {
    color: var(--text-light);
    margin-bottom: 10px;
  }

  .item-info .price {
    color: var(--secondary-light);
    padding: 0;
    margin-bottom: 15px;
  }

  .item-info .btn-add-to-cart {
    width: 100%;
    margin: 0;
  }

  /* Newsletter section */
  .newsletter-section {
    background-color: var(--primary);
    color: var(--text-light);
    padding: 60px 0;
  }

  .newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
  }

  .newsletter-content h2 {
    color: var(--text-light);
  }

  .newsletter-content p {
    color: var(--text-light);
    opacity: 0.9;
  }

  .newsletter-form {
    margin-top: 30px;
  }

  .form-group {
    margin-bottom: 20px;
  }

  .form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
  }

  .form-group input {
    width: 100%;
    padding: 15px;
    border-radius: 4px;
    border: none;
    font-size: 1rem;
  }

  .btn-submit {
    background-color: var(--secondary);
    color: var(--text-light);
    padding: 15px 30px;
    font-size: 1rem;
    width: 100%;
  }

  .btn-submit:hover {
    background-color: var(--secondary-dark);
  }

  .form-info {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-top: 20px;
  }