.page-khuyen-mai {
  font-family: Arial, sans-serif;
  color: #333333;
  background-color: #F5F7FA;
  line-height: 1.6;
}

.page-khuyen-mai__top-section {
  padding-top: 10px;
  padding-bottom: 60px;
  text-align: center;
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

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

.page-khuyen-mai__main-title {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  color: #ffffff;
}

.page-khuyen-mai__intro-text {
  font-size: 1.15rem;
  max-width: 800px;
  margin: 0 auto 30px auto;
  color: #f0f0f0;
}

.page-khuyen-mai__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 30px;
}

.page-khuyen-mai__btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.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 {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

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

.page-khuyen-mai__btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai__section {
  padding: 60px 0;
  background-color: #F5F7FA;
}

.page-khuyen-mai__section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  color: #E53935;
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
}

.page-khuyen-mai__promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.page-khuyen-mai__promo-card {
  background-color: #FFFFFF;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.page-khuyen-mai__card-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;
}

.page-khuyen-mai__card-title {
  font-size: 1.5rem;
  color: #E53935;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-khuyen-mai__card-description {
  font-size: 1rem;
  color: #333333;
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__btn-small {
  padding: 10px 20px;
  font-size: 0.95rem;
  align-self: flex-start;
}

.page-khuyen-mai__terms .page-khuyen-mai__container,
.page-khuyen-mai__guide .page-khuyen-mai__container,
.page-khuyen-mai__why-choose .page-khuyen-mai__container,
.page-khuyen-mai__faq .page-khuyen-mai__container,
.page-khuyen-mai__conclusion .page-khuyen-mai__container {
  background-color: #FFFFFF;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.page-khuyen-mai__article-wrap {
  max-width: 900px;
  margin: 0 auto;
}

.page-khuyen-mai__sub-title {
  font-size: 1.7rem;
  color: #E53935;
  margin-top: 35px;
  margin-bottom: 20px;
  font-weight: 600;
}

.page-khuyen-mai__text-block {
  font-size: 1rem;
  color: #333333;
  margin-bottom: 20px;
}

.page-khuyen-mai__steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.page-khuyen-mai__step-item {
  background-color: #F5F7FA;
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.3s ease;
}

.page-khuyen-mai__step-item:hover {
  transform: translateY(-3px);
}

.page-khuyen-mai__step-number {
  width: 50px;
  height: 50px;
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.page-khuyen-mai__step-title {
  font-size: 1.3rem;
  color: #E53935;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-khuyen-mai__step-description {
  font-size: 0.95rem;
  color: #333333;
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__why-choose .page-khuyen-mai__sub-title {
  text-align: left;
}

.page-khuyen-mai__cta-buttons--center {
  margin-top: 40px;
  text-align: center;
}

.page-khuyen-mai__faq-item {
  background-color: #FFFFFF;
  border: 1px solid #E0E0E0;
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.page-khuyen-mai__faq-question {
  font-size: 1.2rem;
  color: #E53935;
  padding: 18px 25px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  position: relative;
}

.page-khuyen-mai__faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: #E53935;
  position: absolute;
  right: 25px;
  transition: transform 0.3s ease;
}

.page-khuyen-mai__faq-item.active .page-khuyen-mai__faq-question::after {
  content: '-';
  transform: rotate(0deg);
}

.page-khuyen-mai__faq-answer {
  font-size: 1rem;
  color: #333333;
  padding: 0 25px 18px 25px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.page-khuyen-mai__faq-item.active .page-khuyen-mai__faq-answer {
  max-height: 500px; /* Adjust as needed for content */
  padding-top: 10px;
}

.page-khuyen-mai__conclusion .page-khuyen-mai__section-title {
  color: #E53935;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-khuyen-mai__main-title {
    font-size: clamp(2rem, 5vw, 3rem);
  }

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

  .page-khuyen-mai__section-title {
    font-size: clamp(1.6rem, 4vw, 2.2rem);
  }

  .page-khuyen-mai__promo-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
  }

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

  .page-khuyen-mai__sub-title {
    font-size: 1.5rem;
  }

  .page-khuyen-mai__steps-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
  }

  .page-khuyen-mai__faq-question {
    font-size: 1.1rem;
  }
}

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

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

  .page-khuyen-mai__intro-text {
    font-size: 0.95rem !important;
    margin-bottom: 20px;
  }

  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 10px;
    padding: 0 15px;
  }

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

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

  .page-khuyen-mai__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem) !important;
    margin-bottom: 30px;
    padding: 0 15px;
  }

  .page-khuyen-mai__promo-grid {
    grid-template-columns: 1fr;
    gap: 25px;
    padding: 0 15px;
  }

  .page-khuyen-mai__card-image {
    height: 200px !important;
  }

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

  .page-khuyen-mai__card-title {
    font-size: 1.2rem !important;
    margin-bottom: 10px;
  }

  .page-khuyen-mai__card-description {
    font-size: 0.9rem !important;
  }

  .page-khuyen-mai__btn-small {
    width: 100% !important;
    text-align: center;
  }

  .page-khuyen-mai__terms .page-khuyen-mai__container,
  .page-khuyen-mai__guide .page-khuyen-mai__container,
  .page-khuyen-mai__why-choose .page-khuyen-mai__container,
  .page-khuyen-mai__faq .page-khuyen-mai__container,
  .page-khuyen-mai__conclusion .page-khuyen-mai__container {
    padding: 30px 15px !important;
    border-radius: 0;
    box-shadow: none;
  }

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

  .page-khuyen-mai__sub-title {
    font-size: 1.4rem !important;
    margin-top: 30px;
    margin-bottom: 15px;
  }

  .page-khuyen-mai__text-block {
    font-size: 0.95rem !important;
    margin-bottom: 15px;
  }

  .page-khuyen-mai__steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 15px;
  }

  .page-khuyen-mai__step-title {
    font-size: 1.15rem !important;
  }

  .page-khuyen-mai__step-description {
    font-size: 0.9rem !important;
  }

  .page-khuyen-mai__cta-buttons--center {
    margin-top: 30px;
    padding: 0 15px;
  }

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

  .page-khuyen-mai__faq-question::after {
    right: 20px;
  }

  .page-khuyen-mai__faq-answer {
    padding: 0 20px 15px 20px;
    font-size: 0.95rem !important;
  }

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

  .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;
  }
}