.page-khuyen-mai {
  font-family: Arial, sans-serif;
  color: #333333;
  background-color: #F5F7FA;
}

.page-khuyen-mai__container {
  max-width: 1170px;
  margin: 0 auto;
  padding: 40px 16px;
  box-sizing: border-box;
}

.page-khuyen-mai__section-title {
  font-size: 2.5em;
  font-weight: bold;
  color: #E53935;
  text-align: center;
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-khuyen-mai__section-description {
  font-size: 1.1em;
  color: #333333;
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.6;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* HERO Section */
.page-khuyen-mai__hero-section {
  padding-top: 10px; /* Small top padding as per instruction, shared.css handles body padding */
  padding-bottom: 60px;
  background-color: #F5F7FA;
}

.page-khuyen-mai__hero-container {
  max-width: 1170px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 40px 16px;
  gap: 30px;
  box-sizing: border-box;
}

.page-khuyen-mai__hero-content {
  flex: 1 1 45%;
  min-width: 300px;
  color: #333333;
}

.page-khuyen-mai__hero-title {
  font-size: clamp(2.5em, 4vw, 3.5em);
  font-weight: 800;
  color: #E53935;
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-khuyen-mai__hero-description {
  font-size: 1.2em;
  line-height: 1.6;
  margin-bottom: 30px;
  color: #333333;
}

.page-khuyen-mai__cta-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  text-align: center;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
  color: #ffffff;
  border: 2px solid transparent;
}

.page-khuyen-mai__btn-primary:hover {
  background: linear-gradient(180deg, #E53935 0%, #FF5A4F 100%);
  transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
  background-color: #ffffff;
  color: #E53935;
  border: 2px solid #E53935;
}

.page-khuyen-mai__btn-secondary:hover {
  background-color: #E53935;
  color: #ffffff;
  transform: translateY(-2px);
}

.page-khuyen-mai__btn-small {
  padding: 10px 20px;
  font-size: 0.95em;
}

.page-khuyen-mai__hero-image {
  flex: 1 1 45%;
  min-width: 300px;
  text-align: center;
}

.page-khuyen-mai__hero-side-image {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  display: block;
  margin: 0 auto;
}

/* Intro Section */
.page-khuyen-mai__intro-section {
  background-color: #ffffff;
  padding: 60px 0;
}

.page-khuyen-mai__promo-types {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-khuyen-mai__promo-type-card {
  background-color: #F5F7FA;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.page-khuyen-mai__promo-type-card:hover {
  transform: translateY(-5px);
}

.page-khuyen-mai__icon-box-media {
  width: 240px;
  height: 240px;
  aspect-ratio: 1 / 1;
  margin: 0 auto 25px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid #FF5A4F;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-khuyen-mai__icon-box-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.page-khuyen-mai__promo-type-title {
  font-size: 1.5em;
  font-weight: bold;
  color: #E53935;
  margin-bottom: 15px;
}

.page-khuyen-mai__promo-type-text {
  font-size: 1em;
  line-height: 1.6;
  color: #555555;
}

/* Promo List Section */
.page-khuyen-mai__promo-list-section {
  padding: 60px 0;
  background-color: #F5F7FA;
}

.page-khuyen-mai__promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-khuyen-mai__promo-card {
  background-color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-8px);
}

.page-khuyen-mai__promo-card-image {
  width: 100%;
  height: 225px; /* Fixed height for consistent card appearance */
  object-fit: cover;
  display: block;
}

.page-khuyen-mai__promo-card-content {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-khuyen-mai__promo-card-title {
  font-size: 1.4em;
  font-weight: bold;
  color: #E53935;
  margin-bottom: 15px;
  line-height: 1.3;
}

.page-khuyen-mai__promo-card-text {
  font-size: 0.95em;
  line-height: 1.6;
  color: #555555;
  margin-bottom: 20px;
}

/* Guide Section */
.page-khuyen-mai__guide-section {
  padding: 60px 0;
  background-color: #ffffff;
}

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

.page-khuyen-mai__step-card {
  background-color: #F5F7FA;
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.04);
  text-align: center;
}

.page-khuyen-mai__step-title {
  font-size: 1.6em;
  font-weight: bold;
  color: #E53935;
  margin-bottom: 15px;
}

.page-khuyen-mai__step-text {
  font-size: 1em;
  line-height: 1.6;
  color: #555555;
}

.page-khuyen-mai__cta-bottom {
  text-align: center;
  margin-top: 60px;
  padding: 40px;
  background-color: #F5F7FA;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.page-khuyen-mai__cta-text {
  font-size: 1.4em;
  font-weight: bold;
  color: #333333;
  margin-bottom: 25px;
}

/* Terms Section */
.page-khuyen-mai__terms-section {
  padding: 60px 0;
  background-color: #F5F7FA;
}

.page-khuyen-mai__terms-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__terms-list li {
  background-color: #ffffff;
  border: 1px solid #E0E0E0;
  border-radius: 8px;
  padding: 15px 20px;
  margin-bottom: 15px;
  font-size: 1em;
  line-height: 1.6;
  color: #555555;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.03);
}

/* FAQ Section */
.page-khuyen-mai__faq-section {
  padding: 60px 0;
  background-color: #ffffff;
}

.page-khuyen-mai__faq-list {
  margin-top: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__faq-item {
  background-color: #F5F7FA;
  border: 1px solid #E0E0E0;
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.15em;
  font-weight: bold;
  color: #333333;
  cursor: pointer;
  background-color: #ffffff;
  border-bottom: 1px solid #E0E0E0;
  list-style: none; /* Hide default marker for <summary> */
}

.page-khuyen-mai__faq-question::-webkit-details-marker {
  display: none; /* Hide default marker for Webkit browsers */
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-question {
  border-bottom: 1px solid #E0E0E0;
}

.page-khuyen-mai__faq-qtext {
  flex-grow: 1;
}

.page-khuyen-mai__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: #E53935;
}

.page-khuyen-mai__faq-answer {
  padding: 20px 25px;
  font-size: 1em;
  line-height: 1.6;
  color: #555555;
  background-color: #F5F7FA;
}

/* General Image styles for content sections */
.page-khuyen-mai img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Media Queries */
@media (max-width: 1024px) {
  .page-khuyen-mai__hero-title {
    font-size: clamp(2.2em, 3.5vw, 3em);
  }
  .page-khuyen-mai__promo-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }

  .page-khuyen-mai__hero-container {
    flex-direction: column;
    padding: 30px 16px;
    gap: 20px;
  }

  .page-khuyen-mai__hero-content {
    order: 2;
    text-align: center;
  }

  .page-khuyen-mai__hero-image {
    order: 1;
    margin-bottom: 20px;
  }

  .page-khuyen-mai__hero-title {
    font-size: 2.2em;
    margin-bottom: 15px;
  }

  .page-khuyen-mai__hero-description {
    font-size: 1em;
    margin-bottom: 20px;
  }

  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 10px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
  }

  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    font-size: 1em;
    padding: 12px 20px;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-khuyen-mai__section-title {
    font-size: 1.8em;
    margin-bottom: 15px;
  }

  .page-khuyen-mai__section-description {
    font-size: 0.95em;
    margin-bottom: 30px;
  }

  /* Module 1: Intro Section - Circular Images */
  .page-khuyen-mai__intro-section {
    padding: 40px 0;
  }

  .page-khuyen-mai__promo-types {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-khuyen-mai__icon-box-media {
    width: 180px;
    height: 180px;
    margin-bottom: 20px;
  }

  /* Promo List Section */
  .page-khuyen-mai__promo-list-section {
    padding: 40px 0;
  }

  .page-khuyen-mai__promo-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-khuyen-mai__promo-card-image {
    height: 180px;
  }

  .page-khuyen-mai__promo-card-content {
    padding: 20px;
  }

  .page-khuyen-mai__promo-card-title {
    font-size: 1.2em;
  }

  .page-khuyen-mai__promo-card-text {
    font-size: 0.9em;
  }

  /* Guide Section */
  .page-khuyen-mai__guide-section {
    padding: 40px 0;
  }

  .page-khuyen-mai__steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-khuyen-mai__step-title {
    font-size: 1.4em;
  }

  .page-khuyen-mai__step-text {
    font-size: 0.95em;
  }

  .page-khuyen-mai__cta-bottom {
    margin-top: 40px;
    padding: 30px;
  }

  .page-khuyen-mai__cta-text {
    font-size: 1.2em;
    margin-bottom: 20px;
  }

  /* Terms Section */
  .page-khuyen-mai__terms-section {
    padding: 40px 0;
  }

  .page-khuyen-mai__terms-list li {
    font-size: 0.95em;
    padding: 12px 18px;
  }

  /* FAQ Section */
  .page-khuyen-mai__faq-section {
    padding: 40px 0;
  }

  .page-khuyen-mai__faq-question {
    font-size: 1em;
    padding: 15px 20px;
  }

  .page-khuyen-mai__faq-toggle {
    font-size: 1.2em;
  }

  .page-khuyen-mai__faq-answer {
    padding: 15px 20px;
    font-size: 0.95em;
  }

  /* General Image and Container Responsiveness */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-khuyen-mai__container,
  .page-khuyen-mai__promo-type-card,
  .page-khuyen-mai__promo-card,
  .page-khuyen-mai__step-card,
  .page-khuyen-mai__cta-bottom,
  .page-khuyen-mai__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Specific override for circular images to maintain aspect ratio */
  .page-khuyen-mai__icon-box-media img {
    height: 100% !important; /* Ensure it fills the circular container */
    object-fit: cover !important;
  }
}