/* Base Styles for Khuyen Mai Page */
.page-khuyen-mai {
  font-family: 'Arial', sans-serif;
  color: var(--text-main);
  background-color: var(--background-color-page);
  line-height: 1.6;
}

.page-khuyen-mai__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

.page-khuyen-mai__section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 15px;
}

.page-khuyen-mai__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--deep-green) 0%, var(--glow) 50%, var(--deep-green) 100%);
  border-radius: 2px;
}

.page-khuyen-mai__text-block {
  font-size: 17px;
  margin-bottom: 20px;
  color: var(--text-secondary);
  text-align: justify;
}

/* Hero Section */
.page-khuyen-mai__hero-section {
  padding-top: 10px; /* Adjusted for shared header offset */
  padding-bottom: 60px;
  background-color: var(--background-color-page);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-khuyen-mai__hero-section .page-khuyen-mai__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
}

.page-khuyen-mai__hero-content {
  text-align: center;
  max-width: 800px;
}

.page-khuyen-mai__main-title {
  font-weight: 700;
  color: var(--gold);
  line-height: 1.2;
  margin-bottom: 20px;
  text-shadow: 0 0 10px rgba(242, 193, 78, 0.5);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
}

.page-khuyen-mai__hero-description {
  font-size: 18px;
  color: var(--text-main);
  margin-bottom: 30px;
}

.page-khuyen-mai__cta-button {
  display: inline-block;
  padding: 15px 30px;
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff;
  font-size: 20px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(42, 209, 111, 0.6);
}

.page-khuyen-mai__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
}

/* Overview Section */
.page-khuyen-mai__overview-section {
  padding: 60px 0;
  background-color: var(--background-color-page);
}

.page-khuyen-mai__promo-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.page-khuyen-mai__promo-list li {
  font-size: 18px;
  color: var(--text-main);
  background-color: var(--card-bg);
  padding: 20px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-color);
}

.page-khuyen-mai__list-icon {
  display: inline-block;
  width: 20px;
  height: 20px;
  min-width: 20px;
  min-height: 20px;
  background-color: var(--glow);
  border-radius: 50%;
  margin-right: 15px;
  position: relative;
}

.page-khuyen-mai__list-icon::before {
  content: '✓';
  color: var(--deep-green);
  font-size: 14px;
  font-weight: bold;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Promo Cards Section */
.page-khuyen-mai__promo-cards {
  padding: 60px 0;
  background-color: var(--background-color-page);
}

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

.page-khuyen-mai__promo-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.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;
  justify-content: space-between;
}

.page-khuyen-mai__card-title {
  font-size: 24px;
  color: var(--gold);
  margin-bottom: 15px;
  line-height: 1.3;
}

.page-khuyen-mai__card-description {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 25px;
  flex-grow: 1;
}

.page-khuyen-mai__card-button {
  display: inline-block;
  padding: 12px 25px;
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 6px;
  text-align: center;
  transition: all 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__card-button:hover {
  background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
  transform: translateY(-2px);
}

/* Claim Guide Section */
.page-khuyen-mai__claim-guide {
  padding: 60px 0;
  background-color: var(--background-color-page);
}

.page-khuyen-mai__guide-list {
  list-style: none;
  padding: 0;
  counter-reset: guide-counter;
  margin-top: 30px;
}

.page-khuyen-mai__guide-list li {
  counter-increment: guide-counter;
  margin-bottom: 25px;
  position: relative;
  padding-left: 50px;
  font-size: 17px;
  color: var(--text-main);
}

.page-khuyen-mai__guide-list li::before {
  content: counter(guide-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 35px;
  height: 35px;
  background-color: var(--glow);
  color: var(--deep-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 20px;
}

.page-khuyen-mai__guide-list li strong {
  color: var(--gold);
}

.page-khuyen-mai__content-image {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 40px;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

/* Terms and Conditions Section */
.page-khuyen-mai__terms-conditions {
  padding: 60px 0;
  background-color: var(--background-color-page);
}

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

.page-khuyen-mai__terms-list li {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  margin-bottom: 15px;
  padding: 20px;
  border-radius: 8px;
  font-size: 16px;
  color: var(--text-secondary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai__terms-list li strong {
  color: var(--text-main);
  display: block;
  margin-bottom: 5px;
}

.page-khuyen-mai__read-more-button {
  display: block;
  width: fit-content;
  margin: 40px auto 0 auto;
  padding: 12px 30px;
  background-color: transparent;
  color: var(--glow);
  border: 2px solid var(--glow);
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__read-more-button:hover {
  background-color: var(--glow);
  color: var(--deep-green);
}

/* Why Choose Section */
.page-khuyen-mai__why-choose {
  padding: 60px 0;
  background-color: var(--background-color-page);
}

.page-khuyen-mai__reason-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
}

.page-khuyen-mai__reason-list li {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
  font-size: 17px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
}

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

/* FAQ Section */
details.page-khuyen-mai__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--card-bg);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
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: var(--deep-green);
}
.page-khuyen-mai__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--text-main);
}
.page-khuyen-mai__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--glow);
  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: var(--background-color-page);
  border-radius: 0 0 5px 5px;
  color: var(--text-secondary);
}

.page-khuyen-mai__faq-section {
  padding: 60px 0;
  background-color: var(--background-color-page);
}

/* Final CTA Section */
.page-khuyen-mai__final-cta {
  padding: 80px 0;
  text-align: center;
  background-color: var(--deep-green);
  border-top: 5px solid var(--glow);
  border-bottom: 5px solid var(--glow);
}

.page-khuyen-mai__final-cta .page-khuyen-mai__section-title {
  color: var(--gold);
}

.page-khuyen-mai__final-cta .page-khuyen-mai__text-block {
  max-width: 900px;
  margin: 0 auto 40px auto;
  color: var(--text-main);
  font-size: 18px;
}

.page-khuyen-mai__cta-button--large {
  padding: 18px 40px;
  font-size: 22px;
}

/* Variables from custom colors */
:root {
  --primary-color: #11A84E;
  --secondary-color: #22C768;
  --button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --card-bg: #11271B;
  --background-color-page: #08160F;
  --text-main: #F2FFF6;
  --text-secondary: #A7D9B8;
  --border-color: #2E7A4E;
  --glow: #57E38D;
  --gold: #F2C14E;
  --divider: #1E3A2A;
  --deep-green: #0A4B2C;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-khuyen-mai__section-title {
    font-size: 32px;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }

  .page-khuyen-mai__hero-description {
    font-size: 17px;
  }

  .page-khuyen-mai__cta-button {
    padding: 12px 25px;
    font-size: 18px;
  }

  .page-khuyen-mai__card-title {
    font-size: 22px;
  }

  .page-khuyen-mai__card-description {
    font-size: 15px;
  }

  .page-khuyen-mai__faq-qtext {
    font-size: 17px;
  }
}

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

  .page-khuyen-mai__hero-section .page-khuyen-mai__container {
    flex-direction: column;
    gap: 20px;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
  }

  .page-khuyen-mai__hero-description {
    font-size: 16px;
  }

  .page-khuyen-mai__cta-button,
  .page-khuyen-mai__card-button,
  .page-khuyen-mai__read-more-button,
  .page-khuyen-mai__cta-button--large {
    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__hero-content,
  .page-khuyen-mai__container,
  .page-khuyen-mai__overview-section,
  .page-khuyen-mai__promo-cards,
  .page-khuyen-mai__claim-guide,
  .page-khuyen-mai__terms-conditions,
  .page-khuyen-mai__why-choose,
  .page-khuyen-mai__faq-section,
  .page-khuyen-mai__final-cta {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-khuyen-mai__section-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .page-khuyen-mai__text-block {
    font-size: 16px;
  }

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

  .page-khuyen-mai__promo-list li {
    font-size: 16px;
    padding: 15px;
  }

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

  .page-khuyen-mai__card-title {
    font-size: 20px;
  }

  .page-khuyen-mai__card-description {
    font-size: 14px;
  }

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

  .page-khuyen-mai__guide-list li {
    font-size: 16px;
    padding-left: 45px;
  }

  .page-khuyen-mai__guide-list li::before {
    width: 30px;
    height: 30px;
    font-size: 18px;
  }

  .page-khuyen-mai__terms-list li {
    font-size: 15px;
    padding: 15px;
  }

  .page-khuyen-mai__reason-list {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .page-khuyen-mai__reason-list li {
    font-size: 15px;
    padding: 20px;
  }

  details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question { padding: 15px; }
  .page-khuyen-mai__faq-qtext { font-size: 16px; }

  .page-khuyen-mai__final-cta .page-khuyen-mai__text-block {
    font-size: 16px;
  }

  .page-khuyen-mai__cta-button--large {
    padding: 15px 30px;
    font-size: 20px;
  }

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