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

.page-khuyen-mai__hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10px; /* Aligned with fixed header spacing rule */
  background-color: var(--deep-navy-color);
  color: var(--text-main-color);
  padding-bottom: 40px;
}

.page-khuyen-mai__hero-content {
  text-align: center;
  max-width: 900px;
  padding: 20px;
  z-index: 1;
}

.page-khuyen-mai__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: var(--gold-color);
  margin-bottom: 15px;
  font-weight: 700;
  line-height: 1.2;
}

.page-khuyen-mai__hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary-color);
  margin-bottom: 30px;
  line-height: 1.6;
}

.page-khuyen-mai__hero-image-wrapper {
  width: 100%;
  max-width: 1200px;
  margin-top: 20px;
  overflow: hidden;
}

.page-khuyen-mai__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  object-fit: cover;
}

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

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  white-space: normal;
  word-wrap: break-word;
  box-sizing: border-box;
}

.page-khuyen-mai__btn-primary {
  background: var(--button-gradient);
  color: var(--text-main-color);
  border: 2px solid transparent;
}

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

.page-khuyen-mai__btn-secondary {
  background: transparent;
  color: var(--gold-color);
  border: 2px solid var(--gold-color);
}

.page-khuyen-mai__btn-secondary:hover {
  background: var(--gold-color);
  color: var(--deep-navy-color);
  transform: translateY(-2px);
}

.page-khuyen-mai__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

.page-khuyen-mai__section-title {
  font-size: 2.5rem;
  color: var(--gold-color);
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
  line-height: 1.3;
}

.page-khuyen-mai__overview-section,
.page-khuyen-mai__terms-section,
.page-khuyen-mai__conclusion-section {
  background-color: var(--card-bg-color);
  color: var(--text-main-color);
}

.page-khuyen-mai__text-block {
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 20px;
  color: var(--text-secondary-color);
}

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

.page-khuyen-mai__text-block a:hover {
  color: var(--gold-color);
  opacity: 0.8;
}

.page-khuyen-mai__types-section,
.page-khuyen-mai__how-to-claim-section,
.page-khuyen-mai__faq-section {
  background-color: #fff;
  color: #333;
}

.page-khuyen-mai__types-section .page-khuyen-mai__section-title,
.page-khuyen-mai__how-to-claim-section .page-khuyen-mai__section-title,
.page-khuyen-mai__faq-section .page-khuyen-mai__section-title {
  color: var(--primary-color);
}

.page-khuyen-mai__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.page-khuyen-mai__grid--2-cols {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.page-khuyen-mai__card {
  background-color: var(--card-bg-color);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  color: var(--text-main-color);
}

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

.page-khuyen-mai__card-text {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary-color);
  margin-bottom: 20px;
}

.page-khuyen-mai__image-container {
  margin-top: 40px;
  text-align: center;
}

.page-khuyen-mai__content-image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  object-fit: cover;
  margin: 0 auto;
}

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

.page-khuyen-mai__step-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
}

.page-khuyen-mai__step-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 30px;
  gap: 20px;
}

.page-khuyen-mai__step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  min-width: 50px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: var(--text-main-color);
  font-size: 1.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.page-khuyen-mai__step-content {
  flex-grow: 1;
}

.page-khuyen-mai__step-title {
  font-size: 1.4rem;
  color: var(--primary-color);
  margin-bottom: 10px;
  font-weight: 600;
}

.page-khuyen-mai__step-content p {
  font-size: 1rem;
  line-height: 1.6;
  color: #555;
}

.page-khuyen-mai__step-content a {
  color: var(--secondary-color);
  text-decoration: underline;
}

.page-khuyen-mai__step-content a:hover {
  color: var(--primary-color);
}

.page-khuyen-mai__bullet-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
}

.page-khuyen-mai__bullet-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 15px;
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text-secondary-color);
}

.page-khuyen-mai__bullet-list li::before {
  content: '✔';
  position: absolute;
  left: 0;
  color: var(--gold-color);
  font-weight: bold;
}

.page-khuyen-mai__bullet-list li strong {
  color: var(--text-main-color);
}

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

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

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--gold-color);
  list-style: none;
}

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

.page-khuyen-mai__faq-toggle {
  font-size: 1.5rem;
  font-weight: bold;
  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 20px 20px 20px;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary-color);
}

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

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

.page-khuyen-mai__faq-answer a:hover {
  color: var(--primary-color);
}

/* Responsive styles */
@media (max-width: 1024px) {
  .page-khuyen-mai__main-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }

  .page-khuyen-mai__hero-description {
    font-size: 1.05rem;
  }

  .page-khuyen-mai__section-title {
    font-size: 2rem;
  }

  .page-khuyen-mai__container {
    padding: 30px 15px;
  }

  .page-khuyen-mai__grid {
    gap: 20px;
  }

  .page-khuyen-mai__card {
    padding: 25px;
  }

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

  .page-khuyen-mai__step-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .page-khuyen-mai__step-number {
    margin-bottom: 15px;
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai__hero-section {
    padding-top: 10px !important;
    padding-bottom: 30px;
  }

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

  .page-khuyen-mai__main-title {
    font-size: 2rem !important;
    margin-bottom: 10px;
  }

  .page-khuyen-mai__hero-description {
    font-size: 1rem !important;
    margin-bottom: 20px;
  }

  .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 300px; /* Constrain button group width */
    margin: 20px auto 0 auto;
  }

  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary,
  .page-khuyen-mai a[class*="button"],
  .page-khuyen-mai a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 20px !important;
    font-size: 0.95rem !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-khuyen-mai__container {
    padding: 20px 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__section-title {
    font-size: 1.8rem !important;
    margin-bottom: 30px;
  }

  .page-khuyen-mai__text-block {
    font-size: 1rem !important;
  }

  .page-khuyen-mai__grid,
  .page-khuyen-mai__grid--2-cols {
    grid-template-columns: 1fr !important;
    gap: 20px;
  }

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

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

  .page-khuyen-mai__card-text {
    font-size: 0.95rem !important;
  }

  .page-khuyen-mai__image-container {
    margin-top: 30px;
  }

  .page-khuyen-mai__content-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
  }

  .page-khuyen-mai__step-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 10px;
  }

  .page-khuyen-mai__step-number {
    width: 40px;
    height: 40px;
    min-width: 40px;
    font-size: 1.5rem;
    margin-bottom: 10px;
  }

  .page-khuyen-mai__step-title {
    font-size: 1.2rem;
  }

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

  .page-khuyen-mai__bullet-list li {
    font-size: 1rem;
    padding-left: 25px;
  }

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

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

  /* General image and container rules for mobile */
  .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__cta-wrapper,
  .page-khuyen-mai__image-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-khuyen-mai__cta-buttons {
    flex-wrap: wrap !important;
    gap: 10px;
  }

  /* No specific rules for home-content, slider, banners, blog-masonry, blog-slider as this is a non-homepage */
}