:root {
    --primary: #1a5f7a;
    --primary-dark: #0f4559;
    --secondary: #ff7f50;
    --secondary-dark: #e56a3e;
    --light: #f5f5f5;
    --dark: #333333;
    --gray: #777777;
    --light-gray: #eeeeee;
    --success: #28a745;
    --error: #dc3545;
  }

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

  body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
  }

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

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    line-height: 1.2;
    font-weight: 700;
    color: var(--primary-dark);
  }

  h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
  }

  h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background-color: var(--secondary);
  }

  h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }

  p {
    margin-bottom: 1rem;
  }

  img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 5px;
  }

  a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s ease;
  }

  a:hover {
    color: var(--secondary);
  }

  ul {
    list-style-position: inside;
    margin-bottom: 1rem;
  }

  button {
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
  }

  /* Section styles */
  section {
    padding: 80px 0;
    position: relative;
  }

  section:nth-child(even) {
    background-color: var(--light-gray);
  }

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

  /* Hero Section */
  .hero-section {
    padding: 120px 0;
    text-align: center;
    background-color: var(--primary-dark);
    color: var(--light);
    position: relative;
    overflow: hidden;
  }

  .hero-section .bg-image {
    opacity: 0.3;
  }

  .hero-section .content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
  }

  .hero-section h1 {
    color: var(--light);
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  }

  .hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }

  /* Categories Section */
  .categories-section {
    background-color: var(--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: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
  }

  .category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  }

  .category-card img {
    height: 200px;
    object-fit: cover;
    border-radius: 8px 8px 0 0;
  }

  .category-card h3 {
    padding: 15px 20px 0;
    color: var(--primary-dark);
  }

  .category-card p {
    padding: 0 20px;
    flex-grow: 1;
  }

  .btn-more {
    display: inline-block;
    padding: 10px 20px;
    margin: 0 20px 20px;
    background-color: var(--primary);
    color: white;
    border-radius: 5px;
    text-align: center;
    transition: background-color 0.3s ease;
  }

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

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

  .products-slider {
    display: flex;
    overflow-x: auto;
    gap: 20px;
    padding: 20px 0;
    scroll-behavior: smooth;
    scrollbar-width: none; /* Firefox */
  }

  .products-slider::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Edge */
  }

  .product-card {
    flex: 0 0 auto;
    width: 300px;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    position: relative;
  }

  .product-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--secondary);
    color: white;
    padding: 5px 10px;
    border-radius: 3px;
    font-size: 0.8rem;
    font-weight: bold;
  }

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

  .product-card h3 {
    padding: 15px 15px 5px;
  }

  .product-description {
    padding: 0 15px;
    font-size: 0.9rem;
    color: var(--gray);
    min-height: 80px;
  }

  .product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-top: 1px solid var(--light-gray);
  }

  .product-price {
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--primary-dark);
  }

  .btn-add-cart {
    background-color: var(--secondary);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
  }

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

  .slider-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
  }

  .slider-prev, .slider-next {
    width: 40px;
    height: 40px;
    background-color: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
  }

  .slider-prev:hover, .slider-next:hover {
    background-color: var(--primary-dark);
  }

  /* Eco Friendly Section */
  .eco-friendly {
    background-color: #f9f9f9;
  }

  .eco-friendly .container {
    display: flex;
    flex-direction: column;
    gap: 30px;
  }

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

  .eco-content {
    flex: 1;
  }

  .eco-image {
    flex: 1;
  }

  .eco-image img {
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  }

  .eco-features {
    list-style: none;
    margin: 30px 0;
  }

  .eco-features li {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
  }

  .eco-features i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 5px;
  }

  .eco-features h3 {
    margin-bottom: 5px;
  }

  .btn-primary {
    display: inline-block;
    padding: 12px 25px;
    background-color: var(--primary);
    color: white;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease;
  }

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

  /* Accessories Guide */
  .guide-tabs {
    margin-top: 40px;
  }

  .tabs-nav {
    display: flex;
    border-bottom: 2px solid var(--light-gray);
    margin-bottom: 30px;
  }

  .tab-btn {
    padding: 12px 20px;
    font-weight: bold;
    color: var(--gray);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all 0.3s ease;
  }

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

  .tab-content {
    display: none;
  }

  .tab-content.active {
    display: flex;
    flex-direction: column;
    gap: 30px;
  }

  @media (min-width: 768px) {
    .tab-content.active {
      flex-direction: row;
    }
  }

  .tab-image {
    flex: 1;
  }

  .tab-image img {
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  }

  .tab-text {
    flex: 1;
  }

  .tab-text ul {
    list-style-type: disc;
    padding-left: 20px;
  }

  .tab-text li {
    margin-bottom: 10px;
  }

  /* Testimonials */
  .testimonials {
    background-color: var(--primary-dark);
    color: white;
    position: relative;
  }

  .testimonials h2 {
    color: white;
    text-align: center;
  }

  .testimonials h2::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .testimonials-slider {
    display: flex;
    overflow-x: hidden;
    scroll-behavior: smooth;
  }

  .testimonial-card {
    flex: 0 0 100%;
    padding: 20px;
  }

  .testimonial-content {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 8px;
    position: relative;
  }

  .testimonial-content i {
    font-size: 2rem;
    color: var(--secondary);
    opacity: 0.5;
    position: absolute;
    top: 20px;
    left: 20px;
  }

  .testimonial-content p {
    margin: 0 0 20px;
    font-size: 1.1rem;
    line-height: 1.8;
    position: relative;
    z-index: 1;
    padding-top: 30px;
  }

  .testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
  }

  .testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
  }

  .testimonial-author h4 {
    margin: 0;
    color: white;
  }

  .testimonial-author p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.8;
  }

  .testimonials-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
  }

  .testimonial-prev, .testimonial-next {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
  }

  .testimonial-prev:hover, .testimonial-next:hover {
    background-color: rgba(255, 255, 255, 0.3);
  }

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

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

  .newsletter-form {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .form-group {
    text-align: left;
  }

  label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
  }

  input, select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
  }

  .btn-submit {
    padding: 12px 25px;
    background-color: var(--secondary);
    color: white;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s ease;
    margin-top: 10px;
  }

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

  /* Responsive adjustments */
  @media (max-width: 767px) {
    h1 {
      font-size: 2rem;
    }

    h2 {
      font-size: 1.5rem;
    }

    section {
      padding: 60px 0;
    }

    .hero-section {
      padding: 80px 0;
    }

    .hero-section h1 {
      font-size: 2.5rem;
    }

    .product-card {
      width: 280px;
    }
  }