.page-khuyen-mai {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #333333; /* Default text color for light backgrounds */
  background: #ffffff; /* Default body background is white */
}

.page-khuyen-mai__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 10px; /* Minimal top padding */
  background-color: #B71C1C; /* Custom Background color */
  color: #FFF5E1; /* Custom Text Main color for dark background */
  min-height: 500px;
  overflow: hidden;
}

.page-khuyen-mai__hero-image-wrapper {
  width: 100%;
  max-height: 600px;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.page-khuyen-mai__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: center;
  aspect-ratio: 16/9;
}

.page-khuyen-mai__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 20px auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-khuyen-mai__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #FFF5E1;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-khuyen-mai__hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  color: #FFF5E1;
}

.page-khuyen-mai__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  white-space: normal; /* Allow text wrapping */
  word-wrap: break-word; /* Allow text wrapping */
  box-sizing: border-box;
  max-width: 100%;
}

.page-khuyen-mai__btn-primary {
  background: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
  color: #7A0E0E; /* Deep Red for contrast */
  border: 2px solid #F4D34D; /* Gold border */
  box-shadow: 0 4px 15px rgba(244, 211, 77, 0.4);
}

.page-khuyen-mai__btn-primary:hover {
  background: linear-gradient(180deg, #E6B800 0%, #FFD86A 100%);
  box-shadow: 0 6px 20px rgba(244, 211, 77, 0.6);
  transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
  background: #C91F17; /* Main color */
  color: #FFF5E1; /* Text Main color */
  border: 2px solid #F2B544; /* Border color */
}

.page-khuyen-mai__btn-secondary:hover {
  background: #E53935; /* Auxiliary color */
  border-color: #FFCC66; /* Glow color */
  transform: translateY(-2px);
}

.page-khuyen-mai__section {
  padding: 60px 0;
}

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

.page-khuyen-mai__section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  color: #C91F17; /* Main color */
}

.page-khuyen-mai__dark-bg .page-khuyen-mai__section-title {
  color: #FFF5E1; /* Text Main color */
}

.page-khuyen-mai__light-bg {
  background: #f8f8f8;
}

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

.page-khuyen-mai__feature-item,
.page-khuyen-mai__promo-card,
.page-khuyen-mai__tip-item {
  background: #D32F2F; /* Card BG color */
  color: #FFF5E1; /* Text Main color */
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  text-align: center;
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-khuyen-mai__light-bg .page-khuyen-mai__feature-item,
.page-khuyen-mai__light-bg .page-khuyen-mai__tip-item {
  background: #ffffff;
  color: #333333;
  border: 1px solid #e0e0e0;
}

.page-khuyen-mai__feature-icon,
.page-khuyen-mai__tip-icon {
  width: 100%;
  max-width: 200px;
  height: auto;
  margin-bottom: 20px;
  border-radius: 8px;
  object-fit: cover;
}

.page-khuyen-mai__feature-title,
.page-khuyen-mai__tip-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: #F4D34D; /* Gold color */
}

.page-khuyen-mai__light-bg .page-khuyen-mai__feature-title,
.page-khuyen-mai__light-bg .page-khuyen-mai__tip-title {
  color: #C91F17; /* Main color */
}

.page-khuyen-mai__feature-description {
  font-size: 1rem;
  line-height: 1.7;
}

.page-khuyen-mai__promo-card {
  text-align: left;
  padding: 0;
}

.page-khuyen-mai__promo-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 10px 10px 0 0;
}

.page-khuyen-mai__promo-content {
  padding: 25px;
}

.page-khuyen-mai__promo-title {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: #C91F17; /* Main color */
}

.page-khuyen-mai__promo-content p {
  margin-bottom: 15px;
  font-size: 1rem;
}

.page-khuyen-mai__promo-content ul {
  list-style: disc inside;
  margin-bottom: 20px;
  padding-left: 0;
}

.page-khuyen-mai__promo-content ul li {
  margin-bottom: 5px;
  font-size: 0.95rem;
}

.page-khuyen-mai__steps-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.page-khuyen-mai__step-item {
  background: #D32F2F; /* Card BG color */
  color: #FFF5E1; /* Text Main color */
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  padding: 30px;
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-khuyen-mai__step-number {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
  color: #7A0E0E; /* Deep Red */
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 700;
  border: 3px solid #F4D34D; /* Gold */
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__step-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-top: 20px;
  margin-bottom: 15px;
  color: #F4D34D; /* Gold */
}

.page-khuyen-mai__step-item p {
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.page-khuyen-mai__article-body {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-khuyen-mai__article-body h3 {
  font-size: 1.6rem;
  font-weight: 600;
  margin-top: 30px;
  margin-bottom: 15px;
  color: #C91F17; /* Main color */
}

.page-khuyen-mai__article-body p {
  margin-bottom: 15px;
  font-size: 1rem;
  line-height: 1.7;
}

.page-khuyen-mai__tips-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* FAQ Section */
details.page-khuyen-mai__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #ffffff;
  color: #333333;
}

details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}

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

details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question:hover {
  background: #f5f5f5;
}

.page-khuyen-mai__faq-qtext {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #333333;
}

.page-khuyen-mai__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: #666;
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}

details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
  padding: 0 20px 20px;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
  color: #333333;
}

.page-khuyen-mai__dark-bg details.page-khuyen-mai__faq-item {
  background: #D32F2F; /* Card BG color */
  border-color: #7A0E0E; /* Deep Red */
  color: #FFF5E1;
}

.page-khuyen-mai__dark-bg details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
  color: #FFF5E1;
}

.page-khuyen-mai__dark-bg .page-khuyen-mai__faq-qtext {
  color: #FFF5E1;
}

.page-khuyen-mai__dark-bg .page-khuyen-mai__faq-toggle {
  color: #F4D34D; /* Gold */
}

.page-khuyen-mai__dark-bg details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
  background: #B71C1C; /* Background color */
  color: #FFF5E1;
}

.page-khuyen-mai__conclusion {
  text-align: center;
  background-color: #B71C1C; /* Background color */
  color: #FFF5E1; /* Text Main color */
}

.page-khuyen-mai__conclusion-text {
  font-size: clamp(1rem, 2vw, 1.2rem);
  max-width: 800px;
  margin: 0 auto 30px auto;
  color: #FFF5E1;
}

.page-khuyen-mai__conclusion-cta {
  margin-top: 20px;
}

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

/* Mobile responsive styles */
@media (max-width: 1024px) {
  .page-khuyen-mai__hero-content {
    padding: 0 15px;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(2rem, 5vw, 3rem);
  }

  .page-khuyen-mai__hero-description {
    font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  }

  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary {
    padding: 12px 25px;
    font-size: 1rem;
  }

  .page-khuyen-mai__section-title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
  }

  .page-khuyen-mai__feature-item,
  .page-khuyen-mai__promo-card,
  .page-khuyen-mai__step-item,
  .page-khuyen-mai__tip-item {
    padding: 25px;
  }

  .page-khuyen-mai__promo-image {
    height: 200px;
  }

  .page-khuyen-mai__promo-title {
    font-size: 1.4rem;
  }

  .page-khuyen-mai__article-body h3 {
    font-size: 1.4rem;
  }
}

@media (max-width: 849px) {
  .page-khuyen-mai__hero-image {
    object-fit: contain !important; /* Ensure image is not cropped */
    aspect-ratio: unset !important;
    height: auto;
    max-height: 400px;
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai__hero-section {
    padding-top: 10px; /* Consistent minimal top padding */
    min-height: auto;
  }

  .page-khuyen-mai__hero-image-wrapper {
    max-height: 300px;
  }

  .page-khuyen-mai__hero-image {
    max-height: 300px !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-khuyen-mai__hero-content {
    margin: 15px auto;
    padding: 0 15px;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-khuyen-mai__hero-description {
    font-size: clamp(0.9rem, 3.5vw, 1.1rem);
    margin-bottom: 25px;
  }

  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 15px;
    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;
    padding: 12px 20px;
    font-size: 1rem;
    text-align: center;
    height: auto;
  }

  .page-khuyen-mai__section {
    padding: 40px 0;
  }

  .page-khuyen-mai__container {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 30px;
  }

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

  .page-khuyen-mai__feature-item,
  .page-khuyen-mai__promo-card,
  .page-khuyen-mai__step-item,
  .page-khuyen-mai__tip-item {
    padding: 20px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

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

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

  .page-khuyen-mai__promo-content ul {
    font-size: 0.9rem;
  }

  .page-khuyen-mai__step-number {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
    top: -15px;
    border-width: 2px;
  }

  .page-khuyen-mai__step-title {
    font-size: 1.2rem;
    margin-top: 15px;
  }

  .page-khuyen-mai__article-body {
    padding: 0;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__article-body h3 {
    font-size: 1.3rem;
    margin-top: 25px;
  }

  .page-khuyen-mai__article-body p {
    font-size: 0.95rem;
  }

  details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question {
    padding: 15px;
  }

  .page-khuyen-mai__faq-qtext {
    font-size: 15px;
  }

  .page-khuyen-mai__faq-toggle {
    font-size: 20px;
    width: 24px;
    margin-left: 10px;
  }

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

  .page-khuyen-mai__conclusion-text {
    font-size: 1rem;
    padding: 0 15px;
  }

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

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

  .page-khuyen-mai__why-choose-us .page-khuyen-mai__container,
  .page-khuyen-mai__promotion-types .page-khuyen-mai__container,
  .page-khuyen-mai__how-to-claim .page-khuyen-mai__container,
  .page-khuyen-mai__terms-conditions .page-khuyen-mai__container,
  .page-khuyen-mai__tips .page-khuyen-mai__container,
  .page-khuyen-mai__faq-section .page-khuyen-mai__container,
  .page-khuyen-mai__conclusion .page-khuyen-mai__container {
    padding-left: 15px;
    padding-right: 15px;
  }
}