//   * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: 'Segoe UI', sans-serif;
      background-color: #f9f9f9;
      color: #333;
    }
    img { max-width: 100%; height: auto; }
    .container { width: 90%; max-width: 1200px; margin: auto; }

    .header, .footer {
      background-color: #fff;
      border-bottom: 1px solid #ddd;
      padding: 1rem 0;
      text-align: center;
    }

.logo-banner {
  width: 100%;
  overflow: hidden;
}

.logo-banner img {
  width: 100%;
  height: auto;
  display: block;
}

/* สำหรับมือถือ: ใช้ขนาดเดิม */
@media (max-width: 768px) {
  .logo-banner img {
    height: 50px;
    width: auto;
    margin: auto;
  }
}

    .nav {
      display: flex;
      justify-content: center;
      gap: 1rem;
      flex-wrap: wrap;
      margin-top: 0.5rem;
    }
    .nav a {
      text-decoration: none;
      color: #0073e6;
      font-weight: bold;
    }

    .search-bar {
      margin: 2rem 0 1rem;
    }
    .search-bar form {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .search-bar input {
      flex: 1;
      padding: 0.5rem;
      font-size: 1rem;
    }
    .search-bar button {
      padding: 0.5rem 1rem;
      background-color: #0073e6;
      color: white;
      border: none;
      cursor: pointer;
    }

    .welcome-box {
      background-color: #fff;
      border: 1px solid #ddd;
      padding: 1rem;
      margin-bottom: 2rem;
    }

    .category-toggle {
      display: none;
      font-size: 1rem;
      background-color: #0073e6;
      color: white;
      padding: 0.5rem 1rem;
      border: none;
      border-radius: 4px;
      margin-bottom: 1rem;
      cursor: pointer;
    }

    .category-sidebar {
      background-color: #fff;
      border: 1px solid #ddd;
      padding: 1rem;
    }
    .category-sidebar h3 {
      margin-bottom: 0.5rem;
      color: #0073e6;
    }
    .category-sidebar ul {
      list-style: none;
      padding-left: 0;
    }
    .category-sidebar li {
      margin-bottom: 0.5rem;
    }
    .category-sidebar a {
      text-decoration: none;
      color: #0073e6;
      font-weight: bold;
    }

    .content-layout {
      display: flex;
      gap: 2rem;
      flex-wrap: wrap;
    }

    .product-section {
      flex: 1;
    }
    .product-section h2 {
      margin-bottom: 1rem;
    }
    .category-description {
      background-color: #fff;
      border: 1px solid #ddd;
      padding: 1rem;
      margin-bottom: 1rem;
    }



    .pagination {
      margin: 2rem 0;
      text-align: center;
    }
    .pagination a {
      display: inline-block;
      margin: 0 5px;
      padding: 0.5rem 0.8rem;
      background-color: #0073e6;
      color: white;
      text-decoration: none;
      border-radius: 4px;
      font-size: 0.9rem;
    }

    @media (max-width: 768px) {
      .content-layout {
        flex-direction: column;
      }
      .category-sidebar {
        display: none;
        margin-bottom: 1rem;
      }
      .category-sidebar.show {
        display: block;
      }
      .category-toggle {
        display: flex;
        align-items: center;
        gap: 0.5rem;
      }


    }

    @media (min-width: 769px) {
      .category-toggle {
        display: none !important;
      }
      .category-sidebar {
        width: 220px;
        flex-shrink: 0;
      }

    }