/* --- 1. BIẾN MÀU SẮC & CÀI ĐẶT CHUNG --- */
  :root {
      --primary-color: #d35400;
      /* Cam cháy - Màu vịt quay */
      --secondary-color: #2c3e50;
      /* Xanh đen - Sang trọng */
      --accent-color: #27ae60;
      /* Xanh lá - Rau thơm/Sạch */
      --bg-light: #fdfbf7;
      /* Màu kem nhạt - Nền web */
      --text-dark: #333;
      --text-light: #666;
      --white: #ffffff;
      --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
      --transition: all 0.3s ease;
  }

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

  body {
      font-family: 'Roboto', sans-serif;
      background-color: var(--bg-light);
      color: var(--text-dark);
      line-height: 1.6;
      overflow-x: hidden;
      /* Tránh thanh cuộn ngang */
  }

  h1,
  h2,
  h3,
  h4 {
      font-family: 'Playfair Display', serif;
      color: var(--secondary-color);
  }

  a {
      text-decoration: none;
      color: inherit;
  }

  ul {
      list-style: none;
  }

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

  .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 15px;
  }

  .btn {
      display: inline-block;
      padding: 10px 25px;
      background: var(--primary-color);
      color: var(--white);
      border-radius: 5px;
      font-weight: 500;
      transition: var(--transition);
      border: none;
      cursor: pointer;
  }

  .btn:hover {
      background: #a04000;
      transform: translateY(-2px);
  }

  .section-title {
      text-align: center;
      margin-bottom: 40px;
  }

  .section-title h2 {
      font-size: 2.5rem;
      margin-bottom: 10px;
  }

  .section-title p {
      color: var(--text-light);
  }

  /* --- 2. HEADER & NAVIGATION --- */
  header {
      background: var(--white);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      position: sticky;
      top: 0;
      z-index: 1000;
      height: 70px;
      display: flex;
      align-items: center;
  }

  .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
  }

  .logo {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--primary-color);
      font-family: 'Playfair Display', serif;
  }

  .logo i {
      margin-right: 5px;
  }

  /* --- PC MENU (GỐC) --- */
  .main-menu {
      display: flex;
      gap: 30px;
  }

  .main-menu>li {
      position: relative;
      padding: 15px 0;
  }

  /* Padding để tạo vùng hover rộng hơn */
  .main-menu>li>a {
      font-weight: 500;
      font-size: 16px;
      transition: var(--transition);
      position: relative;
  }

  .main-menu>li>a:hover {
      color: var(--primary-color);
  }

  /* PC Dropdown Style */
  .main-menu .submenu {
      position: absolute;
      top: 100%;
      left: 0;
      width: 220px;
      background: white;
      box-shadow: var(--shadow);
      border-radius: 0 0 5px 5px;
      border-top: 3px solid var(--primary-color);
      opacity: 0;
      visibility: hidden;
      transform: translateY(20px);
      transition: all 0.3s ease;
      z-index: 1100;
  }

  .main-menu .submenu li {
      border-bottom: 1px solid #eee;
  }

  .main-menu .submenu li:last-child {
      border-bottom: none;
  }

  .main-menu .submenu a {
      display: block;
      padding: 12px 20px;
      font-size: 15px;
      color: var(--secondary-color);
      transition: 0.2s;
  }

  .main-menu .submenu a:hover {
      background: #fff5f0;
      color: var(--primary-color);
      padding-left: 25px;
      /* Hiệu ứng trượt nhẹ chữ khi hover */
  }

  /* Hiệu ứng hiển thị Submenu trên PC */
  .main-menu>li:hover .submenu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
  }

  /* Mũi tên chỉ xuống cho menu cha trên PC */
  .has-child>a::after {
      content: '\f107';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      margin-left: 5px;
      font-size: 12px;
  }

  /* --- ACTIONS & MOBILE TOGGLE --- */
  .header-actions {
      display: flex;
      align-items: center;
      gap: 20px;
  }

  .hotline-btn {
      background: var(--accent-color);
      color: white;
      padding: 8px 15px;
      border-radius: 30px;
      font-size: 0.9rem;
      display: none;
  }

  .hamburger {
      display: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--secondary-color);
  }

  /* --- MOBILE MENU SIDEBAR --- */
  .mobile-menu-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.5);
      z-index: 1001;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
  }

  .mobile-menu-container {
      position: fixed;
      top: 0;
      right: 0;
      width: 300px;
      height: 100%;
      background: white;
      z-index: 1002;
      transform: translateX(100%);
      transition: transform 0.4s ease;
      box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
      display: flex;
      flex-direction: column;
  }

  .mobile-menu-header {
      padding: 20px;
      background: var(--primary-color);
      color: white;
      display: flex;
      justify-content: space-between;
      align-items: center;
  }

  /* Mobile Menu Content Copied from PC */
  .mobile-nav-content {
      padding: 0;
      overflow-y: auto;
      flex-grow: 1;
  }

  .mobile-nav-content ul {
      list-style: none;
  }

  .mobile-nav-content>ul>li {
      border-bottom: 1px solid #eee;
  }

  /* Style cho link trong mobile */
  .mobile-nav-content a {
      display: block;
      padding: 15px 20px;
      font-weight: 500;
      color: var(--secondary-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
  }

  /* Submenu trong Mobile (Mặc định ẩn) */
  .mobile-nav-content .submenu {
      background: #f9f9f9;
      display: none;
      /* JS sẽ toggle thành block */
      padding-left: 0;
  }

  .mobile-nav-content .submenu li a {
      padding-left: 40px;
      font-size: 15px;
      color: #666;
      font-weight: 400;
  }

  /* Nút mũi tên Mobile */
  .mobile-dropdown-toggle {
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #eee;
      border-radius: 4px;
      transition: 0.3s;
  }

  .mobile-dropdown-toggle.active {
      transform: rotate(180deg);
      background: var(--primary-color);
      color: white;
  }

  /* Trạng thái mở menu mobile */
  body.menu-open .mobile-menu-overlay {
      opacity: 1;
      visibility: visible;
  }

  body.menu-open .mobile-menu-container {
      transform: translateX(0);
  }

  .header-actions {
      display: flex;
      align-items: center;
      gap: 20px;
  }

  .cart-icon {
      position: relative;
      font-size: 1.2rem;
      cursor: pointer;
  }

  .cart-count {
      position: absolute;
      top: -8px;
      right: -8px;
      background: var(--primary-color);
      color: white;
      font-size: 0.7rem;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
  }

  .hotline-btn {
      background: var(--accent-color);
      color: white;
      padding: 8px 15px;
      border-radius: 30px;
      font-size: 0.9rem;
      display: none;
      /* Hiện trên PC */
  }

  /* Hamburger Button (Mobile) */
  .hamburger {
      display: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--secondary-color);
  }

  /* --- 3. MOBILE MENU (SLIDING) --- */
  .mobile-menu-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.5);
      z-index: 1001;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
  }

  .mobile-menu-container {
      position: fixed;
      top: 0;
      right: 0;
      /* Trượt từ phải sang */
      width: 280px;
      height: 100%;
      background: var(--white);
      z-index: 1002;
      transform: translateX(100%);
      transition: transform 0.4s cubic-bezier(0.77, 0.2, 0.05, 1.0);
      box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
      display: flex;
      flex-direction: column;
  }

  .mobile-menu-header {
      padding: 20px;
      background: var(--primary-color);
      color: white;
      display: flex;
      justify-content: space-between;
      align-items: center;
  }

  .close-menu {
      font-size: 1.5rem;
      cursor: pointer;
  }

  .mobile-nav {
      padding: 20px;
      flex-grow: 1;
  }

  .mobile-nav li {
      border-bottom: 1px solid #eee;
  }

  .mobile-nav a {
      display: block;
      padding: 15px 0;
      font-weight: 500;
      color: var(--secondary-color);
  }

  /* Active State for Menu */
  .menu-open .mobile-menu-overlay {
      opacity: 1;
      visibility: visible;
  }

  .menu-open .mobile-menu-container {
      transform: translateX(0);
  }

  /* --- 4. HERO SECTION --- */
  .hero {
      height: 500px;
      background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://images.unsplash.com/photo-1627845366479-79b8a802422a?q=80&w=1920&auto=format&fit=crop');
      /* Ảnh minh họa Vịt Quay */
      background-size: cover;
      background-position: center;
      display: flex;
      align-items: center;
      text-align: center;
      color: white;
  }

  .hero-content {
      max-width: 700px;
      margin: 0 auto;
  }

  .hero h1 {
      font-size: 3.5rem;
      color: #fff;
      margin-bottom: 20px;
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  }

  .hero p {
      font-size: 1.2rem;
      margin-bottom: 30px;
  }

  /* --- 5. CATEGORIES / PRODUCTS --- */
  .products-section {
      padding: 60px 0;
  }

  .product-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
  }

  .product-card {
      background: var(--white);
      border-radius: 10px;
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: var(--transition);
      position: relative;
  }

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

  .product-img {
      height: 200px;
      overflow: hidden;
  }

  .product-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
  }

  .product-card:hover .product-img img {
      transform: scale(1.1);
  }

  .product-info {
      padding: 20px;
  }

  .badge {
      background: var(--accent-color);
      color: white;
      padding: 3px 8px;
      border-radius: 4px;
      font-size: 0.8rem;
      position: absolute;
      top: 10px;
      right: 10px;
  }

  .product-title {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
  }

  .product-price {
      color: var(--primary-color);
      font-weight: 700;
      font-size: 1.1rem;
      margin-bottom: 15px;
  }

  /* --- 6. FEATURES (USP) --- */
  .features {
      background: white;
      padding: 50px 0;
      text-align: center;
  }

  .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
  }

  .feature-item i {
      font-size: 3rem;
      color: var(--primary-color);
      margin-bottom: 15px;
  }

  /* --- REVIEWS SECTION (NEW) --- */
  .reviews-section {
      background-color: #fff;
      padding: 60px 0 80px;
      position: relative;
  }

  .review-card {
      background: #f9f9f9;
      padding: 30px;
      border-radius: 15px;
      text-align: center;
      border: 1px solid #eee;
      /* Swiper Slide yêu cầu height: auto để các card bằng nhau nếu dùng flex */
      height: 100%;
  }

  .review-avatar {
      width: 80px;
      height: 80px;
      border-radius: 50%;
      margin: 0 auto 15px;
      object-fit: cover;
      border: 3px solid var(--primary);
  }

  .stars {
      color: #f1c40f;
      margin-bottom: 15px;
      font-size: 0.9rem;
  }

  .review-text {
      font-style: italic;
      color: #555;
      margin-bottom: 20px;
      font-size: 1rem;
      line-height: 1.6;
  }

  .reviewer-name {
      font-weight: bold;
      color: var(--secondary);
      font-size: 1.1rem;
      font-family: 'Playfair Display', serif;
  }

  /* Swiper Pagination Styling */
  .swiper-pagination-bullet-active {
      background-color: var(--primary) !important;
  }

  /* --- 7. BLOG SEO --- */
  .blog-section {
      padding: 60px 0;
      background: #f1f1f1;
  }

  .blog-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
  }

  .blog-card {
      background: white;
      border-radius: 8px;
      padding: 15px;
  }

  .blog-card h3 {
      font-size: 1.2rem;
      margin-bottom: 10px;
  }

  .blog-card p {
      font-size: 0.9rem;
      color: #666;
  }

  /* --- 8. FOOTER --- */
  footer {
      background: var(--secondary-color);
      color: #ccc;
      padding: 50px 0 20px;
  }

  .footer-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 40px;
      margin-bottom: 30px;
  }

  .footer-col h3 {
      color: white;
      margin-bottom: 20px;
      font-size: 1.3rem;
  }

  .footer-col ul li {
      margin-bottom: 10px;
  }

  .footer-col ul li a:hover {
      color: var(--primary-color);
  }

  .social-links a {
      font-size: 1.5rem;
      margin-right: 15px;
      color: white;
  }

  .copyright {
      text-align: center;
      border-top: 1px solid #444;
      padding-top: 20px;
      font-size: 0.9rem;
  }

  /* --- RESPONSIVE MEDIA QUERIES --- */
  @media (min-width: 992px) {
      .hotline-btn {
          display: inline-block;
      }
  }

  @media (max-width: 991px) {

      .desktop-nav {
          display: none;
      }

      .hamburger {
          display: block;
      }

      .has-child>a::after {
          display: none;
      }

      .mobile-nav-list .submenu li {
          border-bottom: 1px solid #eee;
          display: flex;
          flex-wrap: wrap;
          align-items: center;
      }

      .mobile-nav-content .submenu li a {
          font-size: 14px;
      }

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

      .feature-grid {
          grid-template-columns: 1fr;
      }
  }

  @media (max-width: 576px) {
      .hero {
          height: 400px;
      }

      .section-title h2 {
          font-size: 2rem;
      }

      .mobile-menu-container {
          width: 80%;
      }
  }