/* style/khuyen-mai.css */
.page-khuyen-mai {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333333; /* Default text color for light background */
  background-color: #FFFFFF; /* Assuming body background is light */
}

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

.page-khuyen-mai__article-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-khuyen-mai__hero-section {
  background-color: #F0F8FF; /* Light background for hero */
  padding-top: 10px; /* Small top padding, header offset handled by body */
  padding-bottom: 60px;
  text-align: center;
}

.page-khuyen-mai__main-title {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  color: #26A9E0;
  margin-bottom: 15px;
  line-height: 1.2;
}

.page-khuyen-mai__subtitle {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  color: #555555;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

.page-khuyen-mai__btn {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 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-color: #26A9E0;
  color: #FFFFFF;
  border: 2px solid #26A9E0;
}

.page-khuyen-mai__btn-primary:hover {
  background-color: #1a8cc7;
  border-color: #1a8cc7;
}

.page-khuyen-mai__btn-secondary {
  background-color: #FFFFFF;
  color: #26A9E0;
  border: 2px solid #26A9E0;
}

.page-khuyen-mai__btn-secondary:hover {
  background-color: #E6F5FF;
  color: #1a8cc7;
  border-color: #1a8cc7;
}

.page-khuyen-mai__btn-small {
  padding: 8px 15px;
  font-size: 0.9rem;
  border-radius: 5px;
}

.page-khuyen-mai__section-title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  color: #26A9E0;
  text-align: center;
  margin-bottom: 30px;
  margin-top: 60px;
}

.page-khuyen-mai__introduction-section,
.page-khuyen-mai__promo-categories,
.page-khuyen-mai__how-to-claim,
.page-khuyen-mai__terms-conditions,
.page-khuyen-mai__faq-section,
.page-khuyen-mai__conclusion-cta {
  padding: 40px 0;
}

.page-khuyen-mai__introduction-section p,
.page-khuyen-mai__how-to-claim p,
.page-khuyen-mai__terms-conditions p,
.page-khuyen-mai__conclusion-cta p {
  font-size: 1.05rem;
  margin-bottom: 20px;
  color: #444444;
}

.page-khuyen-mai__figure {
  margin: 30px 0;
  text-align: center;
}

.page-khuyen-mai__figure img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  margin: 0 auto;
}

.page-khuyen-mai__figcaption {
  font-size: 0.9rem;
  color: #777777;
  margin-top: 10px;
}

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

.page-khuyen-mai__promo-card {
  background-color: #FFFFFF;
  border: 1px solid #e0e0e0;
  border-radius: 10px;
  padding: 25px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-khuyen-mai__card-title {
  font-size: 1.4rem;
  color: #26A9E0;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-khuyen-mai__promo-card p {
  font-size: 0.95rem;
  color: #555555;
  margin-bottom: 15px;
  flex-grow: 1;
}

.page-khuyen-mai__promo-card ul {
  list-style-type: disc;
  margin-left: 20px;
  margin-bottom: 20px;
  color: #555555;
}

.page-khuyen-mai__promo-card li {
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.page-khuyen-mai__card-figure {
  width: 100%;
  margin: 0 0 20px 0;
}

.page-khuyen-mai__card-figure img {
  width: 100%;
  height: auto;
  border-radius: 5px;
  display: block;
}

.page-khuyen-mai__step-list {
  list-style-type: none;
  counter-reset: step-counter;
  padding: 0;
}

.page-khuyen-mai__step-list li {
  margin-bottom: 40px;
  position: relative;
  padding-left: 60px;
}

.page-khuyen-mai__step-list li::before {
  counter-increment: step-counter;
  content: "0" counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  font-size: 2rem;
  font-weight: 700;
  color: #26A9E0;
}

.page-khuyen-mai__step-list li:nth-child(n+10)::before {
  content: counter(step-counter);
}

.page-khuyen-mai__step-title {
  font-size: 1.3rem;
  color: #26A9E0;
  margin-bottom: 10px;
  font-weight: 600;
}

.page-khuyen-mai__step-list p {
  font-size: 1rem;
  color: #444444;
}

.page-khuyen-mai__step-list a {
  color: #EA7C07;
  text-decoration: underline;
}

.page-khuyen-mai__step-list a:hover {
  text-decoration: none;
}

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

.page-khuyen-mai__info-card {
  background-color: #F8F8F8;
  border-left: 5px solid #26A9E0;
  border-radius: 5px;
  padding: 20px;
  margin-bottom: 20px;
}

.page-khuyen-mai__info-card .page-khuyen-mai__card-title {
  color: #26A9E0;
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.page-khuyen-mai__info-card ul {
  list-style-type: circle;
  margin-left: 20px;
}

.page-khuyen-mai__info-card li {
  margin-bottom: 5px;
  font-size: 0.95rem;
  color: #555555;
}

.page-khuyen-mai__faq-list {
  margin-top: 30px;
}

.page-khuyen-mai__faq-item {
  background-color: #FFFFFF;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.03);
}

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.15rem;
  font-weight: 600;
  color: #333333;
  cursor: pointer;
  list-style: none;
  outline: none;
}

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

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

.page-khuyen-mai__faq-toggle {
  font-size: 1.5rem;
  color: #26A9E0;
  margin-left: 15px;
  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 25px;
  font-size: 1rem;
  color: #555555;
}

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

.page-khuyen-mai__conclusion-cta {
  background-color: #F0F8FF;
  padding-top: 60px;
  padding-bottom: 60px;
  text-align: center;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
  .page-khuyen-mai__main-title {
    font-size: clamp(2rem, 4vw, 3rem);
  }

  .page-khuyen-mai__section-title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
  }

  .page-khuyen-mai__promo-card {
    padding: 20px;
  }

  .page-khuyen-mai__faq-question {
    padding: 15px 20px;
    font-size: 1.1rem;
  }

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

@media (max-width: 768px) {
  /* 1. Top section title + CTA */
  .page-khuyen-mai__hero-section {
    padding-top: 10px !important; /* Small top padding, header offset handled by body */
    padding-bottom: 40px;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(1.8rem, 8vw, 2.5rem);
    margin-bottom: 10px;
  }

  .page-khuyen-mai__subtitle {
    font-size: 1rem;
    margin-bottom: 25px;
  }

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

  .page-khuyen-mai__btn {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 15px;
    font-size: 0.95rem;
  }

  /* 2. Single column long text container */
  .page-khuyen-mai__container,
  .page-khuyen-mai__article-wrap {
    padding-left: 15px !important;
    padding-right: 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__introduction-section,
  .page-khuyen-mai__promo-categories,
  .page-khuyen-mai__how-to-claim,
  .page-khuyen-mai__terms-conditions,
  .page-khuyen-mai__faq-section,
  .page-khuyen-mai__conclusion-cta {
    padding: 30px 0;
  }

  .page-khuyen-mai__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-top: 40px;
    margin-bottom: 25px;
  }

  .page-khuyen-mai__introduction-section p,
  .page-khuyen-mai__how-to-claim p,
  .page-khuyen-mai__terms-conditions p,
  .page-khuyen-mai__conclusion-cta p {
    font-size: 0.95rem;
    margin-bottom: 15px;
  }

  /* 3. Generic images and figures */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block;
  }

  .page-khuyen-mai__figure {
    margin: 20px 0;
  }

  .page-khuyen-mai__figcaption {
    font-size: 0.85rem;
  }

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

  .page-khuyen-mai__promo-card {
    padding: 15px;
  }

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

  .page-khuyen-mai__promo-card p,
  .page-khuyen-mai__promo-card li {
    font-size: 0.9rem;
  }

  /* 4. Buttons and button containers (already mostly covered by .page-khuyen-mai__btn) */
  .page-khuyen-mai__btn-small {
    width: 100% !important;
    max-width: 100% !important;
    padding: 10px 15px;
    font-size: 0.9rem;
  }

  .page-khuyen-mai__action-buttons {
    margin-top: 30px;
  }

  /* 5. Registration tutorial and FAQ blocks */
  .page-khuyen-mai__step-list li {
    padding-left: 50px;
    margin-bottom: 30px;
  }

  .page-khuyen-mai__step-list li::before {
    font-size: 1.8rem;
  }

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

  .page-khuyen-mai__step-list p {
    font-size: 0.95rem;
  }

  .page-khuyen-mai__info-card {
    padding: 15px;
  }

  .page-khuyen-mai__info-card .page-khuyen-mai__card-title {
    font-size: 1.1rem;
  }

  .page-khuyen-mai__info-card li {
    font-size: 0.9rem;
  }

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

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