/* CSS Reset & Base Styles */
.page-khuyen-mai {
  font-family: 'Arial', sans-serif;
  color: #1F2D3D; /* Text Main */
  background-color: #F4F7FB; /* Background */
  line-height: 1.6;
}

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

.page-khuyen-mai__section {
  padding: 60px 0;
}

.page-khuyen-mai__section-title {
  font-size: 2.5em;
  color: #1F2D3D; /* Text Main */
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
}

.page-khuyen-mai__sub-title {
  font-size: 1.5em;
  color: #1F2D3D; /* Text Main */
  margin-top: 30px;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-khuyen-mai__text-block {
  font-size: 1.1em;
  line-height: 1.8;
  margin-bottom: 20px;
  color: #1F2D3D;
}

.page-khuyen-mai__text-block ul {
  list-style-type: disc;
  margin-left: 20px;
  margin-bottom: 15px;
}

.page-khuyen-mai__text-block li {
  margin-bottom: 8px;
}

/* Buttons */
.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1em;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
  background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  color: #ffffff;
}

.page-khuyen-mai__btn-primary:hover {
  background: linear-gradient(180deg, #2F6BFF 0%, #4A8BFF 100%);
  box-shadow: 0 4px 15px rgba(47, 107, 255, 0.4);
}

.page-khuyen-mai__btn-secondary {
  background: #ffffff;
  color: #2F6BFF;
  border-color: #2F6BFF;
}

.page-khuyen-mai__btn-secondary:hover {
  background: #F4F7FB;
  color: #1a51c9;
  border-color: #1a51c9;
}

.page-khuyen-mai__btn-small {
  padding: 8px 18px;
  font-size: 0.95em;
}

.page-khuyen-mai__btn-large {
  padding: 15px 30px;
  font-size: 1.2em;
}

/* Images */
.page-khuyen-mai img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Hero Section */
.page-khuyen-mai__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding */
  padding-bottom: 60px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.page-khuyen-mai__hero-image-wrapper {
  width: 100%;
  max-height: 700px; /* Limit hero image height */
  overflow: hidden;
}

.page-khuyen-mai__hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center;
}

.page-khuyen-mai__hero-content {
  max-width: 900px;
  margin-top: 40px;
  padding: 0 20px;
}

.page-khuyen-mai__hero-title {
  font-size: clamp(2.2em, 4vw, 3.5em);
  color: #1F2D3D; /* Text Main */
  margin-bottom: 20px;
  font-weight: 800;
  line-height: 1.2;
}

.page-khuyen-mai__hero-description {
  font-size: 1.2em;
  color: #1F2D3D;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__hero-cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Promotions List Section */
.page-khuyen-mai__promotions-list {
  background-color: #F4F7FB;
}

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

.page-khuyen-mai__promotion-card {
  background-color: #FFFFFF; /* Card BG */
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__promotion-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__card-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

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

.page-khuyen-mai__card-title {
  font-size: 1.6em;
  color: #1F2D3D; /* Text Main */
  margin-bottom: 15px;
  font-weight: 700;
}

.page-khuyen-mai__card-description {
  font-size: 1em;
  color: #1F2D3D;
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__card-features {
  list-style-type: none;
  padding: 0;
  margin-bottom: 20px;
}

.page-khuyen-mai__card-features li {
  font-size: 0.95em;
  color: #1F2D3D;
  margin-bottom: 8px;
  position: relative;
  padding-left: 25px;
}

.page-khuyen-mai__card-features li::before {
  content: '✓';
  color: #2F6BFF;
  position: absolute;
  left: 0;
  font-weight: bold;
}

.page-khuyen-mai__promotion-card .page-khuyen-mai__btn-primary {
  margin-top: auto;
  align-self: flex-start;
}

/* How To Join Section */
.page-khuyen-mai__how-to-join-section {
  background-color: #F4F7FB;
}

.page-khuyen-mai__steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.page-khuyen-mai__step-item {
  background-color: #FFFFFF; /* Card BG */
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.page-khuyen-mai__step-item:hover {
  transform: translateY(-8px);
}

.page-khuyen-mai__step-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2em;
  font-weight: 700;
  margin: 0 auto 20px auto;
}

.page-khuyen-mai__step-title {
  font-size: 1.4em;
  color: #1F2D3D; /* Text Main */
  margin-bottom: 10px;
  font-weight: 700;
}

.page-khuyen-mai__step-description {
  font-size: 1em;
  color: #1F2D3D;
}

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

/* Terms & Conditions Section */
.page-khuyen-mai__terms-conditions-section {
  background-color: #FFFFFF;
}

.page-khuyen-mai__terms-conditions-section .page-khuyen-mai__text-block {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__terms-conditions-section .page-khuyen-mai__text-block h3 {
  color: #2F6BFF;
}

.page-khuyen-mai__terms-conditions-section .page-khuyen-mai__text-block ul {
  list-style-type: decimal;
  margin-left: 25px;
  margin-bottom: 20px;
}

.page-khuyen-mai__terms-conditions-section .page-khuyen-mai__text-block a {
  color: #2F6BFF;
  text-decoration: none;
  font-weight: 600;
}

.page-khuyen-mai__terms-conditions-section .page-khuyen-mai__text-block a:hover {
  text-decoration: underline;
}

/* FAQ Section */
.page-khuyen-mai__faq-section {
  background-color: #F4F7FB;
}

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

.page-khuyen-mai__faq-item {
  background-color: #FFFFFF; /* Card BG */
  border-radius: 10px;
  margin-bottom: 15px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2em;
  font-weight: 600;
  color: #1F2D3D; /* Text Main */
  cursor: pointer;
  list-style: none; /* Hide default marker */
  position: relative;
}

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

.page-khuyen-mai__faq-toggle {
  font-size: 1.5em;
  color: #2F6BFF;
  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: 1em;
  color: #1F2D3D;
  line-height: 1.7;
}

/* Bottom CTA Section */
.page-khuyen-mai__cta-bottom-section {
  background: linear-gradient(180deg, #2F6BFF 0%, #4A8BFF 100%);
  color: #ffffff;
  text-align: center;
}

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

.page-khuyen-mai__cta-bottom-section .page-khuyen-mai__text-block a {
  color: #A5C4FF; /* Glow */
  text-decoration: underline;
}

.page-khuyen-mai__cta-bottom-section .page-khuyen-mai__text-block a:hover {
  color: #ffffff;
}

.page-khuyen-mai__cta-bottom-section .page-khuyen-mai__cta-buttons {
  margin-top: 40px;
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-khuyen-mai__cta-bottom-section .page-khuyen-mai__btn-secondary {
  background: #ffffff;
  color: #2F6BFF;
  border-color: #ffffff;
}

.page-khuyen-mai__cta-bottom-section .page-khuyen-mai__btn-secondary:hover {
  background: #F4F7FB;
  color: #1a51c9;
  border-color: #F4F7FB;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-khuyen-mai__container {
    padding: 20px 30px;
  }

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

  .page-khuyen-mai__section-title {
    font-size: 2em;
    margin-bottom: 30px;
  }

  .page-khuyen-mai__hero-title {
    font-size: clamp(2em, 3.5vw, 3em);
  }

  .page-khuyen-mai__hero-description {
    font-size: 1.1em;
  }

  .page-khuyen-mai__grid-layout {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
  }

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

  .page-khuyen-mai__card-title {
    font-size: 1.4em;
  }

  .page-khuyen-mai__steps-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
  }

  .page-khuyen-mai__faq-question {
    font-size: 1.1em;
    padding: 18px 22px;
  }

  .page-khuyen-mai__faq-answer {
    padding: 0 22px 18px 22px;
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai__container {
    padding-left: 15px !important;
    padding-right: 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__section {
    padding: 30px 0;
  }

  .page-khuyen-mai__section-title {
    font-size: 1.8em;
    margin-bottom: 25px;
  }

  .page-khuyen-mai__hero-section {
    padding-top: 10px !important; /* Fixed top padding for mobile */
    padding-bottom: 30px;
  }

  .page-khuyen-mai__hero-title {
    font-size: clamp(1.8em, 6vw, 2.5em);
    line-height: 1.3;
  }

  .page-khuyen-mai__hero-description {
    font-size: 1em;
  }

  .page-khuyen-mai__hero-cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
  }

  /* Buttons - Mobile Specific */
  .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;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-khuyen-mai__hero-cta-buttons,
  .page-khuyen-mai__cta-buttons,
  .page-khuyen-mai__cta-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }

  /* Images - Mobile Specific */
  .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;
  }

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

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

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

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

  .page-khuyen-mai__step-item {
    padding: 25px;
  }

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

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

  .page-khuyen-mai__cta-bottom-section .page-khuyen-mai__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  /* Long text gold frame (not applicable here, but for completeness as per required list) */
  /* .page-khuyen-mai__home-content { height: auto; overflow-y: visible; } */

  /* Game carousel (not applicable here, but for completeness as per required list) */
  /* .page-khuyen-mai__slider-track { display: flex; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; } */
  /* .page-khuyen-mai__game-slide { flex: 0 0 100%; max-width: 100%; } */

  /* Partner grid (not applicable here, but for completeness as per required list) */
  /* .page-khuyen-mai__banners-top-wrapper { grid-template-columns: repeat(2, minmax(0, 1fr)); } */

  /* Blog cards (for general card layout as per required list) */
  /* .page-khuyen-mai__blog-masonry { grid-template-columns: 1fr; } */
  /* .page-khuyen-mai__blog-slider-track { display: flex; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; } */
  /* .page-khuyen-mai__blog-slide { flex: 0 0 100%; max-width: 100%; } */
}

/* Additional rules for contrast and consistency */
.page-khuyen-mai h1, .page-khuyen-mai h2, .page-khuyen-mai h3, .page-khuyen-mai h4, .page-khuyen-mai h5, .page-khuyen-mai h6 {
  color: #1F2D3D; /* Ensure headings are dark on light background */
}

.page-khuyen-mai__dark-section {
  background: #2F6BFF;
  color: #ffffff;
}

.page-khuyen-mai__dark-section .page-khuyen-mai__section-title,
.page-khuyen-mai__dark-section .page-khuyen-mai__sub-title,
.page-khuyen-mai__dark-section .page-khuyen-mai__text-block,
.page-khuyen-mai__dark-section .page-khuyen-mai__card-title,
.page-khuyen-mai__dark-section .page-khuyen-mai__card-description,
.page-khuyen-mai__dark-section .page-khuyen-mai__card-features li {
  color: #ffffff;
}

.page-khuyen-mai__dark-section .page-khuyen-mai__card-features li::before {
  color: #A5C4FF;
}

.page-khuyen-mai a {
  color: #2F6BFF;
  text-decoration: none;
}

.page-khuyen-mai a:hover {
  text-decoration: underline;
}