:root {
    --primary: #1a5f7a;
    --primary-dark: #0d4c66;
    --secondary: #ff7e00;
    --secondary-dark: #e67200;
    --light: #f5f9fc;
    --dark: #0f2b36;
    --gray: #5a6e77;
    --light-gray: #e1e8ed;
    --success: #28a745;
    --white: #ffffff;
    --black: #000000;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
  }

  /* Global Styles */
  * {
    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);
  }

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

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

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

  h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 80px;
    height: 4px;
    background-color: var(--secondary);
  }

  h3 {
    font-size: 1.5rem;
  }

  p {
    margin-bottom: 1.5rem;
  }

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

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

  a:hover {
    color: var(--primary-dark);
  }

  .btn {
    display: inline-block;
    padding: 12px 24px;
    font-weight: 600;
    text-align: center;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
  }

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

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

  .btn-secondary {
    background-color: var(--secondary);
    color: var(--white);
  }

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

  .btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
  }

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

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

  /* Section Styles */
  section {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
  }

  .section-intro {
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
    font-size: 1.1rem;
  }

  /* Hero Section */
  .hero-section {
    padding: 120px 0;
    background-color: var(--dark);
    color: var(--white);
    text-align: center;
  }

  .hero-section .bg-image {
    opacity: 0.4;
  }

  .hero-section h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  }

  .hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--light);
  }

  .hero-cta {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
  }

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

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

  .category-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
  }

  .category-card:hover {
    transform: translateY(-5px);
  }

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

  .category-card h3 {
    padding: 20px 20px 10px;
    color: var(--primary);
  }

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

  .category-card .btn {
    margin: 0 20px 20px;
  }

  /* Promotions Section */
  .promotions-section {
    background-color: var(--primary);
    color: var(--white);
    padding: 100px 0;
  }

  .promotions-section h2 {
    color: var(--white);
    text-align: center;
  }

  .promotions-section h2::after {
    background-color: var(--secondary);
    left: 50%;
    transform: translateX(-50%);
  }

  .promotions-slider {
    display: flex;
    overflow-x: auto;
    gap: 30px;
    padding: 20px 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .promotions-slider::-webkit-scrollbar {
    display: none;
  }

  .promotion-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    min-width: 300px;
    flex: 0 0 auto;
    position: relative;
  }

  .promotion-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--secondary);
    color: var(--white);
    padding: 8px 12px;
    border-radius: var(--border-radius);
    font-weight: 700;
    z-index: 1;
  }

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

  .promotion-card h3 {
    padding: 20px 20px 10px;
    color: var(--dark);
  }

  .promotion-desc {
    padding: 0 20px;
    color: var(--gray);
    min-height: 80px;
  }

  .promotion-price {
    padding: 0 20px 20px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
  }

  .old-price {
    text-decoration: line-through;
    color: var(--gray);
    font-size: 1rem;
    font-weight: 400;
    margin-right: 10px;
  }

  .promotion-card .btn {
    margin: 0 20px 20px;
    width: calc(100% - 40px);
  }

  .slider-controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
  }

  .slider-prev, .slider-next {
    background-color: var(--white);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--primary);
    transition: all 0.3s ease;
  }

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

  /* Bestsellers Section */
  .bestsellers-section {
    background-color: var(--light);
    text-align: center;
  }

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

  .product-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    position: relative;
    transition: transform 0.3s ease;
  }

  .product-card:hover {
    transform: translateY(-5px);
  }

  .product-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--secondary);
    color: var(--white);
    padding: 8px 12px;
    border-radius: var(--border-radius);
    font-weight: 700;
    z-index: 1;
  }

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

  .product-info {
    padding: 20px;
  }

  .product-info h3 {
    margin-bottom: 10px;
    color: var(--primary);
  }

  .product-desc {
    color: var(--gray);
    margin-bottom: 20px;
    min-height: 80px;
  }

  .product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
  }

  .rating {
    color: var(--secondary);
    display: flex;
    align-items: center;
  }

  .rating span {
    color: var(--gray);
    margin-left: 5px;
  }

  .price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0;
  }

  /* Testimonials Section */
  .testimonials-section {
    background-color: var(--dark);
    color: var(--white);
    padding: 100px 0;
    text-align: center;
  }

  .testimonials-section h2 {
    color: var(--white);
  }

  .testimonials-section h2::after {
    background-color: var(--secondary);
    left: 50%;
    transform: translateX(-50%);
  }

  .testimonials-wrapper {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 40px;
  }

  .testimonial {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .testimonial-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    margin-bottom: 20px;
    border: 4px solid var(--secondary);
  }

  .testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .testimonial-content {
    flex: 1;
  }

  .testimonial-text {
    font-style: italic;
    margin-top: 10px;
    color: var(--light);
  }

  .testimonial-author {
    font-weight: 700;
    color: var(--secondary);
    margin-top: 10px;
  }

  .testimonial a {
    color: var(--secondary);
    font-weight: 600;
  }

  .testimonial a:hover {
    color: var(--secondary-dark);
    text-decoration: underline;
  }

  /* Newsletter Section */
  .newsletter-section {
    background-color: var(--white);
    padding: 80px 0;
  }

  .newsletter-section .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
  }

  .newsletter-content {
    flex: 1;
  }

  .newsletter-content h2 {
    text-align: center;
  }

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

  .newsletter-content p {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 30px;
  }

  .newsletter-form {
    max-width: 500px;
    margin: 0 auto;
  }

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

  .form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
  }

  .form-group input[type="email"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
  }

  .checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 10px;
  }

  .checkbox-group input {
    margin-top: 5px;
  }

  .checkbox-group label {
    margin-bottom: 0;
    font-weight: 400;
    font-size: 0.9rem;
  }

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

  .newsletter-image {
    flex: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
  }

  .newsletter-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  /* Responsive Styles */
  @media (min-width: 768px) {
    h1 {
      font-size: 3.5rem;
    }

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

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

    .testimonials-wrapper {
      flex-direction: row;
    }

    .testimonial {
      flex: 1;
      text-align: left;
      flex-direction: row;
      align-items: flex-start;
    }

    .testimonial-avatar {
      margin-right: 20px;
      margin-bottom: 0;
    }

    .newsletter-section .container {
      flex-direction: row;
    }

    .newsletter-content h2,
    .newsletter-content p {
      text-align: left;
    }

    .newsletter-content h2::after {
      left: 0;
      transform: none;
    }
  }

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

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

    .hero-section h1 {
      font-size: 4rem;
    }
  }

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