body {
      font-family: 'Inter', sans-serif;
      margin: 0;
      padding: 0;
      background-color: #fff;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px 15px;
    }

    .header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 0;
    background-color: #ffffff;
    width: 100%;
    position: sticky;
    z-index: 1000;
    top: 0;
  }
  
  .hamburger {
      display: none;
      cursor: pointer;
  }
  
  
  .logo {
    font-family: "Pacifico", serif;
    font-size: 1.8rem;
    color: #4a7c59;
    text-decoration: none;
    display: flex;
    align-items: center;
  }
  
  .imglogo {
    width: 50px;
    height: 50px;
    margin-right: 0.5rem;
    border-radius: 100%;
  }
  
  .nav {
    display: flex;
    list-style: none;
  }
  
  .nav.show-menu {
      display: flex; /* Khi có class show-menu, thì hiện menu ra */
      flex-direction: column;
      background-color: white;
      position: absolute;
      top: 60px;
      left: 0;
      width: 100%;
      z-index: 100;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }
  .nav-item {
    margin: 0 1rem;
  }
  
  .nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
  }
  
  .nav-link:hover {
    color: #4a7c59;
  }
  
  .nav-link:after {
    content: "";
    position: absolute;
    width: 0;
    height: 2px;
    background-color: #4a7c59;
    bottom: 0;
    left: 0;
    transition: width 0.3s;
  }
  
  .nav-link:hover:after {
    width: 100%;
  }
  
  .search-cart {
    display: flex;
    align-items: center;
  }
  
  .search-form {
    display: flex;
    align-items: center;
    border: 1px solid #ddd;
    border-radius: 4px;
    overflow: hidden;
    margin-right: 1rem;
  }
  
  .search-input {
    border: none;
    padding: 0.5rem;
    outline: none;
    width: 180px;
  }
  
  .search-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .cart-btn {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
    margin-right: 1rem;
  }
  
  .user-account {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
  }

  .popup-form {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: rgba(0,0,0,0.5);
  z-index: 999;
  justify-content: center;
  align-items: center;
}

/* Nội dung popup */
.popup-content {
  display: flex;
  width: 700px;
  background: #fff;
  box-shadow: 0 0 15px rgba(0,0,0,0.3);
  border-radius: 8px;
  overflow: hidden;
}

/* Bên trái - đăng ký */
.popup-left {
  width: 50%;
  background: #7c8ca1;
  color: white;
  padding: 30px;
  text-align: center;
}

.popup-left h2 {
  margin-bottom: 10px;
}
.popup-left p {
  margin-bottom: 20px;
}
.btn-register {
  padding: 10px 20px;
  border: 1px solid white;
  background: transparent;
  color: white;
  cursor: pointer;
}

/* Bên phải - login */
.popup-right {
  width: 50%;
  padding: 30px;
}

.popup-right form {
  display: flex;
  flex-direction: column;
}

.popup-right input[type="text"],
.popup-right input[type="password"] {
  margin-bottom: 15px;
  padding: 10px;
  border: 1px solid #ccc;
}

.checkbox {
  margin-bottom: 15px;
}

.btn-login {
  padding: 10px;
  background-color: #153d2e;
  color: white;
  border: none;
  cursor: pointer;
}

    .row {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      justify-content: center;
    }

    .col-lg-3, .col-md-6, .col-6 {
      flex: 1 1 calc(25% - 20px); /* 4 columns */
      min-width: 250px;
      box-sizing: border-box;
    }

    .card {
      border: 1px solid #ccc;
      border-radius: 12px;
      height: 100%;
      transition: box-shadow 0.3s ease;
    }

    .card:hover {
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .card-body {
      padding: 20px;
    }

    .card-title {
      font-size: 20px;
      font-weight: 600;
      margin-bottom: 12px;
    }

    .card-title a {
      text-decoration: none;
      color: #000;
    }

    .card-title a:hover {
      text-decoration: underline;
    }

    .card-text {
      font-size: 16px;
      margin: 6px 0;
    }

    .card-text a {
      color: #444;
      text-decoration: none;
    }

    .card-text a:hover {
      text-decoration: underline;
    }
    .footer {
    background-color: #4a7c59;
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
  }
  
  .footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
  }
  
  .footer-section {
    flex: 1;
    min-width: 250px;
    margin-bottom: 1.5rem;
    justify-items: center;
  }
  
  .footer-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
  }
  
  .footer-title:after {
    content: "";
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: white;
    bottom: 0;
    left: 0;
  }
  
  .footer-logo {
    font-family: "Pacifico", serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
  }
  
  .footer-desc {
    font-size: 0.9rem;
    margin: 0 27px ;
  }
  
  .signup-form {
    display: flex;
    margin-bottom: 1rem;
  }
  
  .signup-input {
    flex: 1;
    padding: 0.5rem;
    border: none;
    border-radius: 4px 0 0 4px;
    outline: none;
  }
  
  .signup-btn {
    padding: 0.5rem 1rem;
    background-color: #5cb85c;
    border: none;
    border-radius: 0 4px 4px 0;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
  }
  
  .signup-btn:hover {
    background-color: #4cae4c;
  }
  
  .contact-info {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
  }
  
  .contact-info i {
    margin-right: 0.5rem;
    width: 20px;
    text-align: center;
  }
  
  .footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    margin-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.9rem;
  }
  .social-icons{
        text-align: center;
        padding: 0;
    }
    .social-icons li{
        display: inline-block;
        text-align: center;
        padding: 5px;
    }
    .social-icons i{
        color: white;
        font-size: 25px;
    }
    @media (max-width: 768px) {
    .nav {
        display: none; /* Ẩn menu trên màn hình nhỏ */
        flex-direction: column;
        position: absolute;
        top: 60px; /* Đặt vị trí menu */
        left: 0;
        background-color: white;
        width: 100%;
        z-index: 1000;
    }
    .nav.active {
        display: flex; /* Hiện menu khi có class active */
    }
    .logo{
      display: none;
    }
    .search-input{
      width: 80px;
    }
    .hamburger {
      position: absolute;
      left: 0px;
      width: 50px;
      height: 50px;
      z-index: 1000;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;    }
    .nav-item {
        padding: 10px 20px; /* Thêm khoảng cách cho các mục menu */
    }
    .nav-link {
        text-decoration: none;
        color: #333;
        font-weight: 500;
    }
  .navbar, .footer-content {
    max-width: 98vw;
    padding-left: 10px;
    padding-right: 10px;
  }

}
    @media (max-width: 992px) {
      .col-lg-3 {
        flex: 1 1 calc(50% - 20px); /* 2 columns on tablet */
      }
    }

    @media (max-width: 576px) {
      .col-lg-3 {
        flex: 1 1 100%; /* 1 column on mobile */
      }
    }