body {
  overflow-x: hidden;
  margin: 0;
  font-family: "Roboto", sans-serif;
}

.banner-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.product-container {
  display: flex;
  justify-content: center;
  gap: 20px;
  padding: 0 50px;
  flex-wrap: wrap;
  margin-bottom: 5%;
}

.product-container h3 {
  color: #183f54;
}

.product {
  flex: 1 1 300px;
  max-width: 450px;
  border: none;
  border-radius: 8px;
  background-color: white;
  box-sizing: border-box;
  box-shadow: none;
  overflow: hidden;
  padding: 0;
  position: relative;
}

.product img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.call-button {
  display: block;               /* Để chiếm 100% chiều rộng */
  width: 100%;
  background-color: #d10000;
  color: white;
  text-decoration: none;        /* Xóa gạch chân mặc định của thẻ a */
  padding: 12px 0;
  font-size: 20px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  border-radius: 0 0 8px 8px;
  text-align: center;           /* Căn giữa nội dung */
}

.call-button:hover {
  background-color: #a80000;
}

.contact {
  margin-top: 60px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 10px;
  flex-wrap: wrap;
  background-color: #183f54;
}

.office {
  flex: 1;
  min-width: 220px;
  border-radius: 8px;
  padding: 15px;
}

.office h3 {
  color: white;
  margin-bottom: 10px;
}

.office p {
  margin: 4px 0;
  font-size: 14px;
  color: white;
}

#backToTopBtn {
  display: none; /* Ẩn ban đầu */
  position: fixed;
  bottom: 40px;
  right: 30px;
  z-index: 999;
  font-size: 18px;
  border: none;
  outline: none;
  background-color: #183f54;
  color: white;
  cursor: pointer;
  padding: 12px 16px;
  border-radius: 50%;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  transition: opacity 0.3s ease;
}

#backToTopBtn:hover {
  background-color: #005b91;
}

h1[id] {
    scroll-margin-top: 100px;
}

@media screen and (max-width: 1024px) {
  .banner-img {
    width: 100%;
    height: auto;
    max-height: none;
    margin-top: 60px;
  }

  h1[id] {
    margin-top: 16px;
    font-size: 18px;
  }

  .product-scroll-wrapper {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    width: 100vw;
  }

  .product-scroll {
    display: flex;
    flex-wrap: nowrap;
    width: max-content;
  }

  .product-link {
    flex: 0 0 100vw;
    width: 100%;
    scroll-snap-align: start;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
  }

  .product {
    display: flex;
    flex-direction: column;
    width: 95%;
    max-width: 95%;
    background-color: white;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  .product img {
    width: 100%;
    height: auto;
    object-fit: cover;
  }

  .call-button {
    width: 100%;
    padding: 12px;
    margin: 0;
    font-size: 16px;
    background-color: #d10000;
    color: white;
    border: none;
    border-radius: 0;
  }

  #backToTopBtn {
    display: none !important;
  }
}