.page-ung-dung-di-dong {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #FFF5E1; /* Text Main */
  background-color: #B71C1C; /* Body Background from shared.css */
}

.page-ung-dung-di-dong__container {
  max-width: 1170px;
  margin: 0 auto;
  padding: 0 16px;
  box-sizing: border-box;
}

.page-ung-dung-di-dong__section-title {
  font-size: 32px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 20px;
  color: #FFF5E1;
  line-height: 1.2;
}

.page-ung-dung-di-dong__section-description {
  font-size: 18px;
  text-align: center;
  margin-bottom: 40px;
  color: #FFF5E1;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* HERO Section */
.page-ung-dung-di-dong__hero-section {
  padding-top: 10px; /* Fixed header offset from body, so only small top padding here */
  padding-bottom: 60px;
  background-color: #B71C1C;
}

.page-ung-dung-di-dong__hero-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 40px;
  padding: 40px 16px;
  max-width: 1170px;
  margin: 0 auto;
}

.page-ung-dung-di-dong__hero-content {
  flex: 1 1 45%;
  min-width: 300px;
  text-align: left;
}

.page-ung-dung-di-dong__main-title {
  font-size: clamp(28px, 4vw, 48px); /* H1 size constraint */
  font-weight: 900;
  margin-bottom: 20px;
  color: #FFD86A; /* Gold */
  line-height: 1.2;
}

.page-ung-dung-di-dong__hero-description {
  font-size: 18px;
  margin-bottom: 30px;
  color: #FFF5E1;
}

.page-ung-dung-di-dong__cta-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.page-ung-dung-di-dong__btn-primary,
.page-ung-dung-di-dong__btn-secondary {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%; /* Ensure responsiveness */
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-ung-dung-di-dong__btn-primary {
  background: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%); /* Button color */
  color: #7A0E0E; /* Deep Red for contrast */
  border: 2px solid #F4D34D; /* Gold border */
  box-shadow: 0 4px 15px rgba(255, 216, 106, 0.4);
}

.page-ung-dung-di-dong__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 216, 106, 0.6);
}

.page-ung-dung-di-dong__btn-secondary {
  background: #7A0E0E; /* Deep Red */
  color: #FFD86A; /* Gold for contrast */
  border: 2px solid #F4D34D; /* Gold border */
}

.page-ung-dung-di-dong__btn-secondary:hover {
  background: #5a0a0a;
  transform: translateY(-2px);
}

.page-ung-dung-di-dong__hero-image {
  flex: 1 1 45%;
  min-width: 300px;
  text-align: center;
}

.page-ung-dung-di-dong__hero-image img {
  max-width: 600px;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  min-width: 200px; /* Min image size */
}

/* Intro Section (Module 1) */
.page-ung-dung-di-dong__intro-section {
  padding: 60px 0;
  background-color: #D32F2F; /* Card BG */
}

.page-ung-dung-di-dong__intro-section .page-ung-dung-di-dong__section-title,
.page-ung-dung-di-dong__intro-section .page-ung-dung-di-dong__section-description {
  color: #FFF5E1;
}

.page-ung-dung-di-dong__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-ung-dung-di-dong__feature-item {
  background-color: #7A0E0E; /* Deep Red for card background */
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.page-ung-dung-di-dong__feature-item:hover {
  transform: translateY(-5px);
}

.page-ung-dung-di-dong__icon-box-media {
  width: 180px;
  height: 180px;
  margin: 0 auto 20px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid #F4D34D; /* Gold border */
  box-shadow: 0 0 0 8px rgba(255, 204, 102, 0.3); /* Glow */
}

.page-ung-dung-di-dong__icon-box-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  min-width: 200px; /* Min image size, will be scaled down by parent */
  min-height: 200px;
}

.page-ung-dung-di-dong__feature-title {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 15px;
  color: #FFD86A; /* Gold */
}

.page-ung-dung-di-dong__feature-text {
  font-size: 16px;
  color: #FFF5E1;
}

/* Guide Section */
.page-ung-dung-di-dong__guide-section {
  padding: 60px 0;
  background-color: #B71C1C;
}

.page-ung-dung-di-dong__guide-step {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 60px;
}

.page-ung-dung-di-dong__guide-step:last-of-type {
  margin-bottom: 0;
}

.page-ung-dung-di-dong__guide-step--reverse {
  flex-direction: row-reverse;
}

.page-ung-dung-di-dong__guide-content {
  flex: 1;
  min-width: 300px;
}

.page-ung-dung-di-dong__guide-title {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 15px;
  color: #FFD86A; /* Gold */
}

.page-ung-dung-di-dong__guide-content p {
  font-size: 17px;
  color: #FFF5E1;
}

.page-ung-dung-di-dong__guide-media {
  flex: 1;
  text-align: center;
  min-width: 300px;
}

.page-ung-dung-di-dong__guide-media img {
  max-width: 800px;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  min-width: 200px; /* Min image size */
}

.page-ung-dung-di-dong__cta-buttons--centered {
  justify-content: center;
  margin-top: 40px;
}

/* Benefits Section */
.page-ung-dung-di-dong__benefits-section {
  padding: 60px 0;
  background-color: #D32F2F; /* Card BG */
}

.page-ung-dung-di-dong__benefits-section .page-ung-dung-di-dong__section-title,
.page-ung-dung-di-dong__benefits-section .page-ung-dung-di-dong__section-description {
  color: #FFF5E1;
}

.page-ung-dung-di-dong__benefits-list {
  list-style: none;
  padding: 0;
  margin: 40px 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-ung-dung-di-dong__benefit-item {
  background-color: #7A0E0E; /* Deep Red */
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.page-ung-dung-di-dong__benefit-item:hover {
  transform: translateY(-5px);
}

.page-ung-dung-di-dong__benefit-item img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto 20px;
  border-radius: 8px;
  min-width: 200px; /* Min image size */
}

.page-ung-dung-di-dong__benefit-title {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 15px;
  color: #FFD86A; /* Gold */
}

.page-ung-dung-di-dong__benefit-item p {
  font-size: 16px;
  color: #FFF5E1;
}

/* FAQ Section */
.page-ung-dung-di-dong__faq-section {
  padding: 60px 0;
  background-color: #B71C1C;
}

.page-ung-dung-di-dong__faq-section .page-ung-dung-di-dong__section-title,
.page-ung-dung-di-dong__faq-section .page-ung-dung-di-dong__section-description {
  color: #FFF5E1;
}

.page-ung-dung-di-dong__faq-list {
  margin-top: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-ung-dung-di-dong__faq-item {
  background-color: #7A0E0E; /* Deep Red */
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.page-ung-dung-di-dong__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 18px;
  font-weight: bold;
  color: #FFD86A; /* Gold */
  cursor: pointer;
  background-color: #C91F17; /* Main color */
  border-bottom: 1px solid #F2B544; /* Border color */
  list-style: none; /* For details/summary */
}

.page-ung-dung-di-dong__faq-question::-webkit-details-marker {
  display: none;
}

.page-ung-dung-di-dong__faq-question .page-ung-dung-di-dong__faq-toggle {
  font-size: 24px;
  line-height: 1;
  margin-left: 15px;
  color: #FFD86A;
}

.page-ung-dung-di-dong__faq-item[open] .page-ung-dung-di-dong__faq-question {
  background-color: #E53935; /* Auxiliary color when open */
}

.page-ung-dung-di-dong__faq-answer {
  padding: 20px 25px;
  font-size: 16px;
  color: #FFF5E1;
  background-color: #7A0E0E; /* Deep Red */
}

/* CTA Bottom Section */
.page-ung-dung-di-dong__cta-bottom-section {
  padding: 60px 0;
  text-align: center;
  background-color: #D32F2F; /* Card BG */
}

.page-ung-dung-di-dong__cta-bottom-container {
  max-width: 800px;
}

.page-ung-dung-di-dong__cta-bottom-section .page-ung-dung-di-dong__section-title,
.page-ung-dung-di-dong__cta-bottom-section .page-ung-dung-di-dong__section-description {
  color: #FFF5E1;
}

.page-ung-dung-di-dong__cta-bottom-section .page-ung-dung-di-dong__cta-buttons {
  justify-content: center;
  margin-top: 30px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-ung-dung-di-dong__hero-container {
    flex-direction: column;
    text-align: center;
  }

  .page-ung-dung-di-dong__hero-content {
    text-align: center;
  }

  .page-ung-dung-di-dong__cta-buttons {
    justify-content: center;
  }

  .page-ung-dung-di-dong__guide-step {
    flex-direction: column;
  }

  .page-ung-dung-di-dong__guide-step--reverse {
    flex-direction: column;
  }

  .page-ung-dung-di-dong__hero-image img,
  .page-ung-dung-di-dong__guide-media img {
    max-width: 80%;
  }
}

@media (max-width: 768px) {
  .page-ung-dung-di-dong__container,
  .page-ung-dung-di-dong__cta-bottom-container {
    padding-left: 15px !important;
    padding-right: 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-ung-dung-di-dong__hero-section {
    padding-top: 10px !important; /* Specific top padding for mobile hero */
    padding-bottom: 40px !important;
  }

  .page-ung-dung-di-dong__main-title {
    font-size: 32px !important;
  }

  .page-ung-dung-di-dong__hero-description,
  .page-ung-dung-di-dong__section-description,
  .page-ung-dung-di-dong__feature-text,
  .page-ung-dung-di-dong__guide-content p,
  .page-ung-dung-di-dong__benefit-item p,
  .page-ung-dung-di-dong__faq-answer p {
    font-size: 16px !important;
  }

  .page-ung-dung-di-dong__section-title {
    font-size: 28px !important;
  }

  /* Buttons - Mobile Adaptation */
  .page-ung-dung-di-dong__cta-buttons {
    flex-direction: column !important;
    gap: 10px !important;
  }

  .page-ung-dung-di-dong__btn-primary,
  .page-ung-dung-di-dong__btn-secondary,
  .page-ung-dung-di-dong a[class*="button"],
  .page-ung-dung-di-dong a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
  }

  /* Images - Mobile Adaptation */
  .page-ung-dung-di-dong img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }

  .page-ung-dung-di-dong__hero-image img,
  .page-ung-dung-di-dong__guide-media img,
  .page-ung-dung-di-dong__benefit-item img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  /* Module 1 - Three column round images */
  .page-ung-dung-di-dong__icon-box-media {
    width: 160px !important;
    height: 160px !important;
    border-width: 3px !important;
    box-shadow: 0 0 0 6px rgba(255, 204, 102, 0.3) !important;
  }

  .page-ung-dung-di-dong__icon-box-media img {
    min-width: unset !important; /* Allow scaling down */
    min-height: unset !important;
  }

  /* Guide Section - Stacking */
  .page-ung-dung-di-dong__guide-step {
    flex-direction: column !important;
    gap: 20px !important;
    margin-bottom: 40px !important;
  }

  .page-ung-dung-di-dong__guide-step--reverse {
    flex-direction: column !important;
  }

  .page-ung-dung-di-dong__guide-content,
  .page-ung-dung-di-dong__guide-media {
    min-width: unset !important;
    width: 100% !important;
  }

  /* Benefits Section - Stacking */
  .page-ung-dung-di-dong__benefits-list {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }

  /* FAQ Section */
  .page-ung-dung-di-dong__faq-question {
    font-size: 16px !important;
    padding: 15px 20px !important;
  }

  .page-ung-dung-di-dong__faq-answer {
    padding: 15px 20px !important;
  }

  /* CTA Bottom Section */
  .page-ung-dung-di-dong__cta-bottom-section {
    padding: 40px 0 !important;
  }
}