.page-khuyen-mai {
  --primary-color: #113B7A;
  --secondary-color: #1D5FD1;
  --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  --card-bg: #10233F;
  --text-main: #F3F8FF;
  --text-secondary: #AFC4E8;
  --border-color: #244D84;
  --glow-color: #4FA8FF;
  --gold-color: #F2C14E;
  --divider-color: #1B3357;
  --deep-navy: #08162B;

  color: #333333; /* Default for light background, will be overridden by dark-section */
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.page-khuyen-mai__hero-section {
  padding-top: 10px; /* Small top padding if body already has header offset */
  padding-bottom: 40px;
  background-color: var(--deep-navy);
  color: var(--text-main);
}

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

.page-khuyen-mai__hero-image-wrapper {
  flex: 1 1 45%;
  min-width: 300px; /* Ensure image doesn't get too small */
  text-align: center;
}

.page-khuyen-mai__hero-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}

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

.page-khuyen-mai__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--gold-color);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-khuyen-mai__description {
  font-size: 1.1rem;
  margin-bottom: 30px;
  color: var(--text-secondary);
}

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

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary,
.page-khuyen-mai__btn-tertiary {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-khuyen-mai__btn-primary {
  background: var(--button-gradient);
  color: var(--text-main);
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__btn-secondary {
  background: none;
  color: var(--gold-color);
  border: 2px solid var(--gold-color);
}

.page-khuyen-mai__btn-secondary:hover {
  background-color: rgba(242, 193, 78, 0.1);
  transform: translateY(-2px);
}

.page-khuyen-mai__btn-tertiary {
  background-color: var(--secondary-color);
  color: var(--text-main);
  border: none;
  padding: 10px 20px;
  border-radius: 25px;
  font-size: 0.9rem;
}

.page-khuyen-mai__btn-tertiary:hover {
  background-color: #1a52bd;
}

.page-khuyen-mai__dark-section {
  background-color: var(--card-bg);
  color: var(--text-main);
}

.page-khuyen-mai__content-area {
  max-width: 1170px;
  margin: 0 auto;
  padding: 60px 16px;
}

.page-khuyen-mai__section-title {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
  color: var(--gold-color);
}

.page-khuyen-mai__section-description {
  font-size: 1.1rem;
  text-align: center;
  margin-bottom: 40px;
  color: var(--text-secondary);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

.page-khuyen-mai__promo-card {
  background-color: var(--deep-navy);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
}

.page-khuyen-mai__promo-card-image-wrapper {
  width: 100%;
  height: 200px; /* Fixed height for consistency */
  overflow: hidden;
}

.page-khuyen-mai__promo-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.page-khuyen-mai__promo-card-image:hover {
  transform: scale(1.05);
}

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

.page-khuyen-mai__promo-card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--gold-color);
}

.page-khuyen-mai__promo-card-text {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__how-to-claim-section {
  background-color: #ffffff;
  color: #333333;
}

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

.page-khuyen-mai__step-item {
  background-color: #f9f9f9;
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  border: 1px solid #e0e0e0;
}

.page-khuyen-mai__step-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-khuyen-mai__step-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.page-khuyen-mai__step-text {
  font-size: 0.95rem;
  color: #555555;
}

.page-khuyen-mai__cta-wrapper {
  text-align: center;
  margin-top: 20px;
}

.page-khuyen-mai__faq-section {
  background-color: var(--deep-navy);
  color: var(--text-main);
}

.page-khuyen-mai__faq-list {
  max-width: 800px;
  margin: 0 auto;
}

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

.page-khuyen-mai__faq-item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  outline: none;
  user-select: none; /* Prevent text selection on click */
}

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

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

.page-khuyen-mai__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  margin-left: 15px;
  color: var(--gold-color);
}

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

.page-khuyen-mai__faq-answer p {
  margin-bottom: 10px;
}

.page-khuyen-mai__faq-answer a {
  color: var(--gold-color);
  text-decoration: underline;
}

/* General image responsiveness */
.page-khuyen-mai img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

  /* HERO section */
  .page-khuyen-mai__hero-section {
    padding-top: 10px !important;
    padding-bottom: 30px;
  }

  .page-khuyen-mai__hero-container {
    flex-direction: column;
    padding: 30px 15px;
    gap: 30px;
  }

  .page-khuyen-mai__hero-image-wrapper,
  .page-khuyen-mai__hero-content {
    flex: 1 1 100%;
    min-width: unset;
    width: 100%;
    text-align: center;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }

  .page-khuyen-mai__description {
    font-size: 1rem;
  }

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

  /* Buttons in general */
  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary,
  .page-khuyen-mai__btn-tertiary,
  .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 !important;
    padding-right: 15px !important;
  }

  /* Content sections */
  .page-khuyen-mai__content-area {
    padding: 40px 15px;
  }

  .page-khuyen-mai__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
  }

  .page-khuyen-mai__section-description {
    font-size: 0.95rem;
  }

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

  /* Promo Card Image (no change to fixed height for card consistency) */
  .page-khuyen-mai__promo-card-image-wrapper {
    height: 180px;
  }

  .page-khuyen-mai__promo-card-title {
    font-size: 1.3rem;
  }

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

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

  .page-khuyen-mai__step-number {
    font-size: 2rem;
  }

  .page-khuyen-mai__step-title {
    font-size: 1.1rem;
  }

  /* FAQ Section */
  .page-khuyen-mai__faq-list {
    padding: 0;
  }

  .page-khuyen-mai__faq-item summary {
    padding: 15px;
    font-size: 1rem;
  }

  .page-khuyen-mai__faq-answer {
    padding: 0 15px 15px;
    font-size: 0.95rem;
  }

  /* All images */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  /* All containers for images/content */
  .page-khuyen-mai__section,
  .page-khuyen-mai__card,
  .page-khuyen-mai__container,
  .page-khuyen-mai__promo-highlights-section,
  .page-khuyen-mai__how-to-claim-section,
  .page-khuyen-mai__faq-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-khuyen-mai__promo-highlights-section .page-khuyen-mai__content-area,
  .page-khuyen-mai__how-to-claim-section .page-khuyen-mai__content-area,
  .page-khuyen-mai__faq-section .page-khuyen-mai__content-area {
    padding-left: 0;
    padding-right: 0;
  }
}