.page-khuyen-mai {
  --color-primary: #11A84E;
  --color-secondary: #22C768;
  --color-background: #08160F;
  --color-card-bg: #11271B;
  --color-text-main: #F2FFF6;
  --color-text-secondary: #A7D9B8;
  --color-border: #2E7A4E;
  --color-glow: #57E38D;
  --color-gold: #F2C14E;
  --color-divider: #1E3A2A;
  --color-deep-green: #0A4B2C;
  color: var(--color-text-main); /* Default text color for the page */
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.page-khuyen-mai__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

/* Hero Carousel Section */
.page-khuyen-mai__hero-carousel-section {
  padding-top: 10px; /* Assuming body padding-top is handled by shared.css */
  position: relative;
  overflow: hidden;
  background-color: var(--color-background);
}

.page-khuyen-mai__hero-slider {
  position: relative;
  width: 100%;
  height: 600px; /* Adjust height as needed */
  overflow: hidden;
}

.page-khuyen-mai__hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.page-khuyen-mai__hero-slide.is-active {
  opacity: 1;
}

.page-khuyen-mai__hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-khuyen-mai__hero-slider-prev,
.page-khuyen-mai__hero-slider-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  z-index: 10;
  font-size: 1.5em;
}

.page-khuyen-mai__hero-slider-prev {
  left: 10px;
}

.page-khuyen-mai__hero-slider-next {
  right: 10px;
}

/* General Titles and Paragraphs */
.page-khuyen-mai__main-title {
  font-size: clamp(2em, 4vw, 3.5em);
  font-weight: bold;
  text-align: center;
  margin-bottom: 20px;
  color: var(--color-gold);
}

.page-khuyen-mai__section-title {
  font-size: 2.5em;
  font-weight: bold;
  text-align: center;
  margin-top: 40px;
  margin-bottom: 30px;
  color: var(--color-text-main);
}

.page-khuyen-mai__section-description,
.page-khuyen-mai__lead-paragraph {
  font-size: 1.1em;
  text-align: center;
  margin-bottom: 30px;
  color: var(--color-text-secondary);
}

.page-khuyen-mai__card-title {
  font-size: 1.5em;
  color: var(--color-gold);
  margin-bottom: 10px;
}

.page-khuyen-mai__card-text {
  color: var(--color-text-secondary);
}

/* Buttons */
.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
  text-align: center;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: var(--color-text-main);
  border: none;
}

.page-khuyen-mai__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
  background: var(--color-card-bg);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.page-khuyen-mai__btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-text-main);
}

.page-khuyen-mai__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* Promotions Overview */
.page-khuyen-mai__promotions-overview-section {
  padding: 60px 0;
  background-color: var(--color-background);
}

/* Promotions Types Section */
.page-khuyen-mai__promotions-types-section {
  padding: 60px 0;
  background-color: var(--color-card-bg);
}

.page-khuyen-mai__promotions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-khuyen-mai__promotion-card {
  background-color: var(--color-background);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  text-align: center;
  display: flex;
  flex-direction: column;
  color: var(--color-text-main);
}

.page-khuyen-mai__promotion-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}

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

.page-khuyen-mai__promotion-card .page-khuyen-mai__btn-secondary {
  margin-top: 20px;
  width: 100%;
}

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

.page-khuyen-mai__guide-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-top: 40px;
}

.page-khuyen-mai__guide-card {
  flex: 0 0 calc(20% - 12px); /* 5 cards per row, accounting for gap */
  max-width: calc(20% - 12px);
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease;
}

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

.page-khuyen-mai__guide-card img {
  width: 100%;
  height: 350px;
  object-fit: contain;
  aspect-ratio: 250/350;
  display: block;
  border-radius: 8px;
  border: 2px solid var(--color-border);
}

/* Vertical offset for guide cards */
.page-khuyen-mai__guide-card--pos-1, .page-khuyen-mai__guide-card--pos-5 {
  padding-top: 50px;
}

.page-khuyen-mai__guide-card--pos-2, .page-khuyen-mai__guide-card--pos-4 {
  padding-top: 25px;
}

/* Terms Section & FAQ Section (using details/summary) */
.page-khuyen-mai__terms-section,
.page-khuyen-mai__faq-section {
  padding: 60px 0;
  background-color: var(--color-card-bg);
}

.page-khuyen-mai__terms-list,
.page-khuyen-mai__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.page-khuyen-mai__faq-item {
  background-color: var(--color-background);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  font-weight: bold;
  font-size: 1.1em;
  color: var(--color-gold);
  list-style: none;
}

.page-khuyen-mai__faq-question::-webkit-details-marker {
  display: none;
}

.page-khuyen-mai__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  transition: transform 0.3s ease;
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-toggle {
  transform: rotate(45deg);
}

.page-khuyen-mai__faq-answer {
  padding: 0 25px 20px;
  font-size: 1em;
  color: var(--color-text-secondary);
}

/* Why Choose Section */
.page-khuyen-mai__why-choose-section {
  padding: 60px 0;
  background-color: var(--color-background);
}

.page-khuyen-mai__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-khuyen-mai__benefit-card {
  background-color: var(--color-card-bg);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  text-align: center;
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

/* CTA Section */
.page-khuyen-mai__cta-section {
  padding: 80px 0;
  background-color: var(--color-deep-green);
  text-align: center;
}

.page-khuyen-mai__cta-section .page-khuyen-mai__section-title {
  color: var(--color-gold);
  margin-top: 0;
}

.page-khuyen-mai__cta-section .page-khuyen-mai__section-description {
  color: var(--color-text-main);
}

/* Home Content Box (for CSS compliance, not active in HTML for this page) */
.page-khuyen-mai__home-content-box {
  max-width: 91%;
  margin: 0 auto;
  padding: 10px 16px;
  border: 5px solid #3477c9;
  border-radius: 15px;
  box-shadow: 0 0 20px #3477c9;
  height: 700px;
  overflow: hidden; /* Ensure scrollbar if content exceeds height */
  display: none; /* Hidden on this page */
}

.page-khuyen-mai__home-content-inner {
  height: 100%;
  overflow-y: auto;
}

/* Blog Section (for CSS compliance, not active in HTML for this page) */
.page-khuyen-mai__blog-section {
  padding: 60px 0;
  background-color: var(--color-background);
  display: none; /* Hidden on this page */
}

.page-khuyen-mai__blog-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-khuyen-mai__hero-slider {
    height: 500px;
  }

  .page-khuyen-mai__guide-card {
    flex: 0 0 calc(33.333% - 10px); /* 3 cards per row */
    max-width: calc(33.333% - 10px);
  }

  .page-khuyen-mai__guide-card--pos-1, .page-khuyen-mai__guide-card--pos-5,
  .page-khuyen-mai__guide-card--pos-2, .page-khuyen-mai__guide-card--pos-4 {
    padding-top: 0;
  }

  .page-khuyen-mai__promotions-grid,
  .page-khuyen-mai__benefits-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }

  .page-khuyen-mai__home-content-box {
    max-width: 95%;
  }

  .page-khuyen-mai__blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-khuyen-mai__container {
    padding: 15px;
  }

  /* Hero Carousel */
  .page-khuyen-mai__hero-carousel-section {
    padding-top: 10px !important;
  }

  .page-khuyen-mai__hero-slider {
    height: 300px;
  }

  .page-khuyen-mai__main-title {
    font-size: 2em;
  }

  .page-khuyen-mai__section-title {
    font-size: 1.8em;
    margin-top: 30px;
    margin-bottom: 20px;
  }

  .page-khuyen-mai__section-description,
  .page-khuyen-mai__lead-paragraph {
    font-size: 1em;
    margin-bottom: 20px;
  }

  /* Buttons */
  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary,
  .page-khuyen-mai a[class*="button"],
  .page-khuyen-mai 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;
    padding-right: 15px;
  }
  
  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 15px;
    padding-left: 15px;
    padding-right: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* Promotions Grid */
  .page-khuyen-mai__promotions-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Guide Grid */
  .page-khuyen-mai__guide-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr); /* Temporary for layout calculation */
    gap: 10px;
  }

  .page-khuyen-mai__guide-card {
    padding-top: 0 !important;
    flex: none;
    max-width: none;
  }

  .page-khuyen-mai__guide-card--pos-1, .page-khuyen-mai__guide-card--pos-2 {
    grid-column: span 3;
  }

  .page-khuyen-mai__guide-card--pos-3, .page-khuyen-mai__guide-card--pos-4, .page-khuyen-mai__guide-card--pos-5 {
    grid-column: span 2;
  }

  .page-khuyen-mai__guide-card img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    object-fit: contain;
  }

  /* Terms & FAQ */
  .page-khuyen-mai__faq-question {
    padding: 15px 20px;
    font-size: 1em;
  }

  .page-khuyen-mai__faq-answer {
    padding: 0 20px 15px;
  }

  /* Why Choose Benefits Grid */
  .page-khuyen-mai__benefits-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* Home Content Box (CSS compliance) */
  .page-khuyen-mai__home-content-box {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important; /* Full height */
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-khuyen-mai__home-content-inner {
    height: auto !important;
    overflow: visible !important;
  }

  /* Blog Section (CSS compliance) */
  .page-khuyen-mai__blog-grid {
    grid-template-columns: 1fr;
  }

  /* General Image Responsiveness */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block;
  }

  .page-khuyen-mai__section,
  .page-khuyen-mai__card,
  .page-khuyen-mai__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}