.page-khuyen-mai {
  font-family: 'Arial', sans-serif;
  color: #333333; /* Text Main */
  background-color: #F5F7FA; /* Background */
}

.page-khuyen-mai__hero-section {
  padding-top: 10px; /* Small top padding, relying on body for header offset */
  padding-bottom: 40px;
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); /* Button gradient for hero background */
  color: #ffffff;
}

.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: 24px;
}

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

.page-khuyen-mai__main-title {
  font-size: clamp(2.2em, 4vw, 3.5em);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #ffffff;
}

.page-khuyen-mai__hero-description {
  font-size: 1.1em;
  line-height: 1.6;
  margin-bottom: 30px;
  color: #ffffff;
}

.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: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1em;
  transition: all 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  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: none;
}

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

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

.page-khuyen-mai__btn-secondary:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
}

.page-khuyen-mai__btn-small {
    padding: 10px 20px;
    font-size: 0.9em;
}

.page-khuyen-mai__btn-large {
    padding: 16px 32px;
    font-size: 1.1em;
}

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

.page-khuyen-mai__hero-side-image {
  max-width: 600px;
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__content-area {
  max-width: 1170px;
  margin: 0 auto;
  padding: 40px 16px;
}

.page-khuyen-mai__section-title {
  font-size: clamp(1.8em, 3.5vw, 2.8em);
  font-weight: 700;
  text-align: center;
  margin-bottom: 20px;
  color: #E53935; /* Main color */
}

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

.page-khuyen-mai__promo-section {
  padding: 60px 0;
  background-color: #F5F7FA; /* Background */
  color: #333333;
}

.page-khuyen-mai__promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  justify-content: center;
}

.page-khuyen-mai__promo-card {
  background: #ffffff; /* Card BG */
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  color: #333333;
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__promo-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

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

.page-khuyen-mai__promo-card-title {
  font-size: 1.3em;
  font-weight: 600;
  margin-bottom: 15px;
  line-height: 1.4;
}

.page-khuyen-mai__promo-card-title a {
  color: #E53935; /* Main color */
  text-decoration: none;
}

.page-khuyen-mai__promo-card-title a:hover {
  text-decoration: underline;
}

.page-khuyen-mai__promo-card-text {
  font-size: 0.95em;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
  color: #333333;
}

.page-khuyen-mai__why-choose-section {
  padding: 60px 0;
  background: linear-gradient(180deg, #E53935 0%, #FF5A4F 100%); /* Main color gradient for dark section */
  color: #ffffff;
}

.page-khuyen-mai__why-choose-section .page-khuyen-mai__section-title {
  color: #ffffff;
}

.page-khuyen-mai__why-choose-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
  justify-content: center;
}

.page-khuyen-mai__why-choose-text {
  flex: 1 1 45%;
  min-width: 300px;
  line-height: 1.7;
  font-size: 1em;
}

.page-khuyen-mai__why-choose-text p {
  margin-bottom: 20px;
  color: #ffffff;
}

.page-khuyen-mai__why-choose-text ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 20px;
}

.page-khuyen-mai__why-choose-text ul li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 10px;
  color: #ffffff;
}

.page-khuyen-mai__why-choose-text ul li::before {
  content: '✔';
  position: absolute;
  left: 0;
  color: #ffffff;
  font-weight: bold;
}

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

.page-khuyen-mai__why-choose-img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__faq-section {
  padding: 60px 0;
  background-color: #F5F7FA; /* Background */
  color: #333333;
}

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

.page-khuyen-mai__faq-item {
  background: #ffffff; /* Card BG */
  border: 1px solid #E0E0E0; /* Border */
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: #333333;
}

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.1em;
  font-weight: 600;
  cursor: pointer;
  background-color: #ffffff;
  color: #333333;
  list-style: none; /* For details/summary */
}

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

.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: 0 25px 20px 25px;
  font-size: 1em;
  line-height: 1.6;
  color: #333333;
}

.page-khuyen-mai__faq-answer p {
  margin: 0;
}

.page-khuyen-mai__cta-bottom-section {
  padding: 60px 0;
  background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); /* Button gradient for dark section */
  color: #ffffff;
  text-align: center;
}

.page-khuyen-mai__cta-bottom-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.page-khuyen-mai__cta-bottom-section .page-khuyen-mai__section-title,
.page-khuyen-mai__cta-bottom-section .page-khuyen-mai__section-description {
  color: #ffffff;
}

/* 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;
  }

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

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

  .page-khuyen-mai__hero-description {
    font-size: 1em;
    margin-bottom: 25px;
  }

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

  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary {
    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__content-area {
    padding: 30px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__section-title {
    font-size: 2em;
    margin-bottom: 15px;
  }

  .page-khuyen-mai__section-description {
    font-size: 1em;
    margin-bottom: 30px;
  }

  .page-khuyen-mai__promo-section,
  .page-khuyen-mai__why-choose-section,
  .page-khuyen-mai__faq-section,
  .page-khuyen-mai__cta-bottom-section {
    padding: 40px 0;
  }

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

  .page-khuyen-mai__promo-card {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

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

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

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

  .page-khuyen-mai__why-choose-content {
    flex-direction: column;
    gap: 30px;
  }

  .page-khuyen-mai__why-choose-text,
  .page-khuyen-mai__why-choose-image {
    flex: 1 1 100%;
    min-width: unset;
  }

  .page-khuyen-mai__why-choose-text p,
  .page-khuyen-mai__why-choose-text ul li {
    font-size: 0.95em;
  }

  .page-khuyen-mai__faq-list {
    max-width: 100%;
    padding: 0 15px;
    box-sizing: border-box;
  }

  .page-khuyen-mai__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

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

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

  .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,
  .page-khuyen-mai__promo-card,
  .page-khuyen-mai__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-khuyen-mai__cta-bottom-content {
    padding-left: 15px;
    padding-right: 15px;
  }
}