General
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  scroll-behavior: smooth;
}

body::-webkit-scrollbar {
  display: none;
}

/* Container */
.container {
  background: #fff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

/* Wrapper để căn giữa header + mobile-menu */
.header-wrapper {
  width: 100%;
  margin: 0 auto;
  position: sticky;
  top: 0;
  z-index: 1000;
  background: white;
}

/* Header */
header {
  background: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  z-index: 2;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: auto;
  cursor: pointer;
}

/* Logo */
.logo img {
  height: 50px;
  object-fit: contain;
}

/* Navbar - Desktop */
.navbar nav ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
  align-items: center;
}

.navbar nav ul li {
  margin-left: 25px;
}

.navbar nav ul li a {
  text-decoration: none;
  color: #333;
  font-weight: 600;
  display: flex;
  align-items: center;
  transition: color 0.3s;
  font-size: 16px;
}

.navbar nav ul li a:hover {
  color: #7FE25B;
}

.navbar nav ul li i {
  margin-right: 8px;
  font-size: 18px;
  color: #24A6DF;
}

/* Icons */
.menu-icon,
.chat-icon {
  display: none !important;
  font-size: 24px;
  color: #24A6DF;
  cursor: pointer;
}

/* Heading */
.h2 h2 {
  text-align: center;
  font-size: 32px;
  color: black !important;
}

/* Responsive - Tablet */
@media (max-width: 992px) {
  header {
    padding: 10px 15px;
  }

  .navbar nav ul li {
    margin-left: 15px;
  }

  .navbar nav ul li a {
    font-size: 10px;
  }

  .logo {
    margin-right: 0;
    justify-content: center;
  }

  .logo img {
    height: 45px;
  }

  .h2 h2 {
    font-size: 24px;
  }

  body {
    font-size: 14px;
  }
}

/* Responsive - Mobile */
@media (max-width: 768px) {
  header {
    justify-content: center;
  }

  .navbar {
    display: none;
  }

  .menu-icon {
    display: block !important;
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1100;
  }

  .chat-icon {
    display: block;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1100;
  }
}
/* Mobile Menu */
.mobile-menu {
  display: flex;
  flex-direction: column;
  background: #fff;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
  position: fixed;
  top: 7.5%;
  left: 0;
  width: 58%; /* Chiếm 80% chiều ngang */
  height: 100vh;
  padding: 20px 0;
  border-top: 1px solid #eee;
  transform: translateX(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.4s ease, opacity 0.3s ease;
  z-index: 999;
}

.mobile-menu.show {
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu li {
  padding: 12px 20px;
  border-bottom: 1px solid #f0f0f0;
  animation: fadeSlide 0.4s ease forwards;
}

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

.mobile-menu li a {
  font-size: 16px;
  font-weight: 600;
  color: #333;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.mobile-menu li a i {
  margin-right: 12px;
  font-size: 20px;
  color: #24A6DF;
  width: 24px;
  text-align: center;
}

/* Menu Item Animation */
@keyframes fadeSlide {
  0% {
    opacity: 0;
    transform: translateY(-10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}
.mobile-menu li:hover {
  color: #24A6DF; /* Màu chữ khi hover */
  background-color: #f4faff; /* Màu nền khi hover */
  transform: translateX(4px); /* Hiệu ứng trượt nhẹ sang phải */
  transition: all 0.3s ease;
}
.mobile-menu li:hover i {
  color: #1a8ecb;
}



/* Banner Section */
.banner {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.banner-img {
  position: relative;
  width: 100%;
}

.banner-img img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

/* Banner Button */
.banner-btn {
  position: absolute;
  bottom: 5%;
  left: 8%;
  background-color: #24A6DF;
  color: white;
  padding: 10px 25px;
  border: none;
  border-radius: 30px;
  font-size: clamp(14px, 2vw, 18px);
  cursor: pointer;
  transition: background-color 0.3s ease;
  white-space: nowrap;
}
.banner-btn a{
  text-decoration: none;
  color: white;
}
.banner-btn:hover {
  background-color: #0088cc;
}

/* Responsive Banner Button */
@media (max-width: 992px) {
  .banner-btn {
    left: 5%;
    padding: 8px 20px;
    font-size: 15px;
  }
}

@media (max-width: 768px) {
  .banner-btn {
    left: 20%;
    transform: translateX(-50%);
    padding: 8px 18px;
    font-size: 12px;
    bottom: 4%;
  }
}

.benefits-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  align-items: center;
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
}

.benefits-text {
  padding: 20px;
}

.benefits-text h2 {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: bold;
  margin-bottom: 15px;
  color: #333;
}

.benefits-text h3 {
  font-size: clamp(18px, 3vw, 22px);
  font-weight: normal;
  margin-bottom: 20px;
  color: #333;
}

.benefits-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.benefits-list li {
  margin-bottom: 12px;
  font-size: clamp(14px, 2.5vw, 16px);
  color: #333;
  position: relative;
  padding-left: 25px;
  line-height: 1.6;
}

.benefits-list li::before {
  content: "▶";
  position: absolute;
  left: 0;
  color: #7FE25B;
  font-size: 16px;
}

.benefits-list li a {
  padding: 5px;
}

.benefits-image {
  padding: 20px;
  text-align: center;
}

.benefits-image img {
  width: 100%;
  height: auto;
  display: block;
  margin: 40px 20px 0;
  object-fit: cover;
}

@media (max-width: 320px) {
  .benefits-container {
    display: block;
  }

  .benefits-text h2,
  .benefits-text h3,
  .benefits-list li {
    font-size: 16px;
  }

  .benefits-image img {
    margin: 20px 10px 0;
  }
}

@media (max-width: 768px) {
  .benefits-container {
    display: block;
  }

  .benefits-image img {
    margin-top: 20px;
  }

  .benefits-text h2 {
    font-size: 24px;
  }

  .benefits-text h3 {
    font-size: 18px;
  }

  .benefits-list li {
    font-size: 15px;
  }
}

@media (max-width: 480px) {
  .benefits-text h2,
  .benefits-text h3,
  .benefits-list li {
    font-size: 16px;
  }

  .benefits-image img {
    margin: 15px 10px 0;
  }
}
.process-section {
    text-align: center;
    max-width: 1200px;
    margin: 50px auto;
}

.process-section h2 {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.process-section p.subtitle {
    font-size: 18px;
    color: #555;
    margin-bottom: 20px;
}

/* Process Steps - sử dụng grid layout thay cho flexbox */
.process-step {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Auto layout */
    gap: 20px;
    justify-items: center; /* Căn giữa các phần tử */
}

.process-step-content {
    padding: 20px;
    text-align: left;
}

.process-step-header {
    margin-bottom: 20px;
}

.process-step-number {
    font-size: 28px;
    font-weight: bold;
    color: #7FE25B;
    margin-right: 8px;
    vertical-align: middle;
}

.process-step-title {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    vertical-align: middle;
}

.process-step-description {
    font-size: 17px;
    color: #333;
    line-height: 1.7;
    margin-top: 10px;
    width: 100%;
}

.process-step-image {
    text-align: center;
}

.process-step-image img {
    max-width: 100%;
    border-radius: 10px;
}

/* Reverse layout */
/* .process-step.reverse {
    flex-direction: row-reverse;
} */

/* Responsive Layout */
@media (max-width: 1200px) {
    .process-step {
        grid-template-columns: 1fr; /* Một cột trên màn hình nhỏ */
        text-align: center;
    }

    .process-step-content,
    .process-step-image {
        text-align: center;
    }

    .process-step-header {
        text-align: center;
    }

    /* Giảm kích thước font cho màn hình nhỏ hơn */
    .process-step-title {
        font-size: 24px;
    }

    .process-step-number {
        font-size: 24px;
    }

    .process-step-description {
        font-size: 16px;
    }
}

/* Mobile-First (dưới 768px) */
@media (max-width: 768px) {
    .process-step {
        grid-template-columns: 1fr; /* Một cột */
        gap: 15px;
    }

    .process-step-content,
    .process-step-image {
        text-align: center;
        padding: 15px;
    }

    .process-step-title,
    .process-step-number {
        font-size: 22px;
    }

    .process-step-description {
        font-size: 14px;
    }
}

/* Pricing Section */
.pricing-main {
    width: 90%;
    margin: 0 auto;
    text-align: center;
}


.pricing-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
}

.pricing-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
  position: relative;
}

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

.pricing-header {
  background: #24A6DF;
  color: #fff;
  text-align: center;
  padding: 20px 10px;
  font-weight: bold;
  font-size: clamp(18px, 2.5vw, 22px);
}

.pricing-header.red {
  background: #7FE25B;
}

.pricing-price {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: bold;
  color: #fff;
  margin-top: 10px;
}

.pricing-note {
  font-size: clamp(12px, 1.5vw, 14px);
  font-weight: normal;
  margin-top: 5px;
}

.pricing-body {
  padding: 20px;
  flex: 1;
}

.pricing-body ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pricing-body ul li {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  margin-bottom: 12px;
  font-size: clamp(13px, 1.8vw, 15px);
  text-align: left; /* Đảm bảo căn trái văn bản nếu xuống dòng */
}

.pricing-body ul li i {
  margin-right: 10px;
  font-size: 18px;
  flex-shrink: 0; /* Ngăn icon bị co lại */
}

.pricing-body ul li span {
  display: block;
  text-align: left;
}


.pricing-body ul li .fa-check {
  color: #2ecc71;
}

.pricing-body ul li .fa-xmark {
  color: #e74c3c;
}

.pricing-footer,
.pricing-footer1 {
  padding: 15px;
  text-align: center;
  border-top: 1px solid #eee;
}

.pricing-footer button,
.pricing-footer1 button {
  padding: 10px 25px;
  font-size: clamp(14px, 2vw, 16px);
  font-weight: bold;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.pricing-footer button {
  background: #24A6DF;
  color: #fff;
}

.pricing-footer1 button {
  background: #7FE25B;
  color: #fff;
}

.pricing-footer button:hover {
  background: #7FE25B;
}

.pricing-footer1 button:hover {
  background: #24A6DF;
}
.review-steps {
  max-width: 1200px;
  margin: 50px auto;
  text-align: center;
  padding: 0 20px;
  box-sizing: border-box;
}

.review-steps h1 {
  font-size: clamp(24px, 5vw, 32px);
  font-weight: bold;
  margin-bottom: 50px;
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Auto layout, responsive */
  gap: 30px;
  justify-items: center; /* Center items horizontally */
}

.step {
  background: #f9f9f9;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
  max-width: 350px;
}

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

.step img {
  width: 200px;
  height: auto;
  margin-bottom: 20px;
  border-radius: 50%;
  object-fit: cover;
}

.step-title {
  color: #00aaff;
  font-weight: bold;
  font-size: 20px;
  margin-bottom: 10px;
}

.step-description {
  font-size: 16px;
  color: #333;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .step {
    max-width: 100%;
  }

  .step img {
    width: 180px;
  }
}

@media (max-width: 480px) {
  .review-steps h1 {
    font-size: 24px;
  }

  .step-title {
    font-size: 18px;
  }

  .step-description {
    font-size: 15px;
  }

  .step img {
    width: 150px;
  }
}

.section-wrapper {
    max-width: 90%;
    margin: 0 auto;
}

/* Auto Layout cho Container */
.container-wrapper {
    max-width: 90%;
    margin: 0 auto;
    padding: 20px;
    display: grid; /* Sử dụng grid layout */
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); /* Tự động điều chỉnh số cột */
    gap: 40px;
    align-items: center;
    justify-items: center; /* Canh giữa các phần tử */
    border-radius: 10px;
    box-sizing: border-box;
}

/* Định dạng cho ảnh bên trái */
.left-image {
    text-align: center;
}

.left-image img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 10px;
    object-fit: cover;
}

/* Nội dung bên phải */
.right-content {
    text-align: center;
}

.right-content h2 {
    color: #333;
    font-size: clamp(24px, 5vw, 32px); /* responsive */
    margin-bottom: 20px;
}

.right-content p {
    font-size: 16px;
    color: #333;
    line-height: 1.6;
}

.right-content ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.right-content ul li {
    margin-bottom: 10px;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: flex-start; /* Căn trái */
}

.right-content ul li::before {
    content: "\f00c"; /* fa-check */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: #7FE25B;
    margin-right: 10px;
}

/* Nhấn mạnh phần tử với màu sắc */
.highlight {
    color: #24A6DF;
    font-weight: bold;
}

/* Nút CTA */
.cta-button {
    display: inline-block;
    background-color: #24A6DF;
    color: white;
    padding: 12px 25px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    margin-top: 20px;
    transition: background 0.3s;
}

.cta-button:hover {
    background-color: #7FE25B;
}

/* Responsive: Tablet và mobile */
@media (max-width: 768px) {
    .container-wrapper {
        grid-template-columns: 1fr; /* Một cột khi màn hình nhỏ */
        text-align: center;
    }

    .right-content {
        text-align: center;
    }

    .right-content ul li {
        justify-content: center; /* Canh giữa các phần tử trong list */
    }
}
/* Review Section */
.review-section {
    padding: 20px;
    text-align: center;
    background: #fff;
}

.review-section h2 {
    font-size: clamp(24px, 5vw, 32px);
    color: #000;
    margin-bottom: 30px;
}

/* Card Container - Sử dụng Flexbox để layout tự động */
.card-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    box-sizing: border-box;
}

/* Card Item */
.card {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 30px 20px;
    flex: 1 1 calc(25% - 30px); /* 4 cards per row minus gap */
    max-width: calc(25% - 30px);
    box-sizing: border-box;
    text-align: center;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-10px);
}

.card img {
    width: 150px;
    height: auto;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 20px;
    color: #24A6DF;
    margin-bottom: 15px;
}

.card p {
    font-size: 15px;
    color: #555;
    line-height: 1.6;
}

/* Tablet - 2 cards per row */
@media (max-width: 992px) {
    .card {
        flex: 1 1 calc(45% - 30px); /* 2 cards per row */
        max-width: calc(45% - 30px);
    }
}

/* Mobile - 1 card per row */
@media (max-width: 600px) {
    .card-container {
        flex-direction: column;
        align-items: center;
    }

    .card {
        flex: 1 1 90%;
        max-width: 90%;
    }
}

/* Container cho hai section */
.container2 {
    display: flex;
    gap: 40px;
    max-width: 1200px;
    margin-top: 80px;
    flex-wrap: wrap;
    margin: 30px auto;
    padding: 0 20px;
    box-sizing: border-box;
}

/* FAQ và Form Section */
.faq-section,
.form-section {
    flex: 1 1 48%;
    min-width: 300px;
    padding: 20px;
    box-sizing: border-box;
}

/* Tiêu đề */
h2 {
    color: #333;
    margin-bottom: 10px;
    font-size: clamp(24px, 4vw, 32px);
    font-weight: 700;
}

/* Nội dung Paragraph */
p {
    font-size: 16px;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.5;
    font-weight: 500;
}

/* Accordion */
.accordion-item {
    border: 1px solid #ddd;
    border-radius: 6px;
    margin-bottom: 10px;
    overflow: hidden;
}

.accordion-header {
    background: #f1f5f9;
    padding: 15px 20px;
    cursor: pointer;
    font-weight: 400;
    font-size: 16px;
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s, transform 0.3s;
}

.accordion-header:hover {
    background: #24A6DF;
    color: #fff;
    transform: scale(1.05);
}

.accordion-item.active .accordion-header {
    background: #24A6DF;
    color: #fff;
}

.accordion-body {
    display: none;
    padding: 15px 20px;
    background: #fff;
    color: #444;
    font-size: 14px;
    line-height: 1.5;
}

.accordion-item.active .accordion-body {
    display: block;
}

.icon {
    font-size: 18px;
}

/* Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    padding: 12px;
    border: 1px solid #1879a3;
    border-radius: 4px;
    font-size: 15px;
    font-weight: 400;
}

.contact-form button {
    padding: 12px;
    background: #24A6DF;
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

.contact-form button:hover {
    background: #7FE25B;
    transform: scale(1.05);
}

/* Icon trong Accordion */
.accordion-header .icon {
    color: #7FE25B;
    font-size: 1.2em;
    transition: transform 0.3s ease;
}

.accordion-item.active .icon {
    transform: rotate(90deg);
}

/* Responsive */
@media (max-width: 768px) {
    .container2 {
        flex-direction: column;
        align-items: center;
    }

    .faq-section,
    .form-section {
        flex: 1 1 100%;
        margin-bottom: 30px;
    }

    h2 {
        font-size: clamp(22px, 6vw, 28px);
    }

    p {
        font-size: 14px;
    }

    .contact-form button {
        font-size: 16px;
    }
}
/* Footer */
.footer {
    background-image: radial-gradient( circle 427px at 51.8% 56.2%,  rgba(0,122,255,1) 0%, rgba(0,51,102,1) 64.4% );
    color: white;
    font-family: 'Segoe UI', sans-serif;
    padding: 40px 20px 20px;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: auto;
    gap: 40px;
    justify-content: space-between;
}

.footer-column {
    flex: 1;
    min-width: 250px;
    max-width: 300px;  /* Đảm bảo không quá rộng */
}

.footer-column h4 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    color: white;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    color: white;
}

.footer-column ul li {
    margin-bottom: 8px;
    color: white;
}

.footer-column ul li a {
text-decoration: none;
    color: white    ;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-logo {
    width: 150px;
    margin-bottom: 10px;
}

.color-btn {
    margin-top: 10px;
    padding: 10px 20px;
    background-color: #054278;
    color: white;
    border: 1px solid #ffffff70;
    border-radius: 25px;
    font-weight: bold;
    cursor: pointer;
}

.p {
    color: white;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid #ffffff30;
    margin-top: 30px;
    padding-top: 10px;
    color: white;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        align-items: center;
    }

    .footer-column {
        text-align: center;
        max-width: 100%;
        margin-bottom: 20px;
    }

    .color-btn {
        width: 100%;
        text-align: center;
    }
}

body {
  margin: 0px;
  padding: 0px;
}

html {
  margin: 0px !important;
  padding: 0px;
}

#zaloContactBtn {
            display: inline-block;
            padding: 10px 20px;
            background-color: #0084FF;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            transition: background-color 0.3s ease;
        }

        #zaloContactBtn:hover {
            background-color: #006ee6;
        }

        #popupOverlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
        }

        #zaloContactPopup {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: white;
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
            z-index: 1000;
            max-width: 500px;
            width: 90%;
            box-sizing: border-box;
            text-align: center;
        }

        #zaloContactPopup h2 {
            margin-top: 0;
            color: #333;
            font-size: 24px;
            margin-bottom: 20px;
        }

        .contact-card-horizontal {
            background-color: #007BFF;
            color: white;
            padding: 15px 20px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
        }

        .contact-info {
            display: flex;
            align-items: center;
            flex-grow: 1;
            margin-right: 15px;
        }

        .avatar {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            object-fit: cover;
            margin-right: 15px;
            border: 3px solid rgba(255, 255, 255, 0.8);
        }

        .name-and-phone {
            text-align: left;
        }

        .name-and-phone strong {
            display: block;
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 5px;
        }

        .name-and-phone p {
            margin: 0;
            font-size: 15px;
            opacity: 0.9;
        }

        .qr-code-display {
            flex-shrink: 0;
        }

        .qr-code-display img {
            width: 100px;
            height: 100px;
            background-color: white;
            padding: 5px;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        }

        .chat-link {
            font-size: 16px;
            margin-bottom: 15px;
        }

        .chat-link a {
            color: #007BFF;
            text-decoration: none;
            font-weight: bold;
            transition: color 0.3s ease;
        }

        .chat-link a:hover {
            text-decoration: underline;
            color: #0056b3;
        }

        #closePopupBtn {
            padding: 10px 25px;
            background-color: #f44336;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            transition: background-color 0.3s ease;
        }

        #closePopupBtn:hover {
            background-color: #d32f2f;
        }

        @media (max-width: 480px) {
            .contact-card-horizontal {
                flex-direction: column;
                text-align: center;
            }
            .contact-info {
                flex-direction: column;
                margin-right: 0;
                margin-bottom: 15px;
            }
            .avatar {
                margin-right: 0;
                margin-bottom: 10px;
            }
            .name-and-phone {
                text-align: center;
            }
            .qr-code-display img {
                width: 80px;
                height: 80px;
            }
            #zaloContactPopup h2 {
                font-size: 20px;
            }
        }

        .header-section2 {
          position: sticky;
  top: 0;
  z-index: 100;
  background-color: white;
  box-shadow: rgba(0, 0, 0, 0.19) 0px 10px 20px, rgba(0, 0, 0, 0.23) 0px 6px 6px;
        } 

        .header-section {
  background-color: #fff;
  padding: 0px 3rem;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  transition: 0.3s;
  margin: 0 272px;
}

.logo img {
  height: 50px;
  transition: 0.3s;
}

.navbar nav ul {
  list-style: none;
  margin: 0;
  display: flex;
}

.navbar nav ul li {
  margin-left: 20px;
}

.navbar nav ul li a {
  text-decoration: none;
  color: #333;
  font-weight: bold;
  transition: color 0.3s ease;
}

.navbar nav ul li a:hover {
  color: #3498db;
}

.mobile-menu {
  display: none;
  list-style: none;
  padding: 0;
  margin: 0;
  background-color: #ffffff;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  z-index: 999;
  border-top: groove 1px #3498db;
}

#menu-toggle {
  transition: all 0.5s ease;
}

#menu-toggle:hover {
  color: black;
  transition: all 0.5s ease;
}

.mobile-menu li a {
  display: block;
  color: #000000;
  padding: 15px;
  text-decoration: none;
  border-bottom: 1px solid #c5c5c5;
  font-weight: bold;
  font-size: 18px;
  transition: all 0.5s ease;
}

.mobile-menu li {
  margin: 0px;
}

.mobile-menu li a i {
  color: #3498db;
  padding: 0 10px 0 4px;
  font-size: 20px;
  transition: all 0.5s ease;
}

.mobile-menu li a:hover {
  background-color: #3498db;
  color: white;
  transition: all 0.5s ease;
}

.mobile-menu li a:hover i {
  color: white;
  transition: all 0.5s ease;
}

.menu-icon {
  font-size: 24px;
  cursor: pointer;
  display: none;
}

.chat-icon {
  font-size: 24px;
  color: #3498db;
  margin-left: 20px;
  display: none;
}

@media (max-width: 768px) {
  .navbar {
    display: none;
  }

  .mobile-menu.active {
    display: block;
  }

  .menu-icon {
    display: block;
  }

  .chat-icon {
    display: block;
  }

  .logo img {
    height: 40px;
  }
}