/* Base styles for the Khuyến Mãi page */
.page-khuyen-mai {
  font-family: Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--card-bg);
  line-height: 1.6;
}

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

.page-khuyen-mai__section-title {
  font-size: 2.5em;
  color: var(--gold);
  text-align: center;
  margin-bottom: 40px;
  margin-top: 60px;
  font-weight: bold;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-khuyen-mai__text-block {
  font-size: 1.1em;
  margin-bottom: 1em;
  color: var(--text-secondary);
}

.page-khuyen-mai__hero-section {
  position: relative;
  width: 100%;
  min-height: 500px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: 10px; /* Small top padding, relying on body for header offset */
  background-color: var(--deep-navy);
}

.page-khuyen-mai__hero-image-wrapper {
  width: 100%;
  height: 100%;
  position: relative;
  z-index: 0;
}

.page-khuyen-mai__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-khuyen-mai__hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  max-width: 800px;
  padding: 30px;
  background: rgba(17, 59, 122, 0.7); /* Main color with transparency */
  border-radius: 15px;
  box-shadow: 0 0 30px var(--glow);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border: 2px solid var(--border);
}

.page-khuyen-mai__hero-title {
  font-size: clamp(2.5em, 4vw, 3.5em);
  color: var(--gold);
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.2;
  text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.7);
}

.page-khuyen-mai__hero-description {
  font-size: 1.2em;
  color: var(--text-main);
  margin-bottom: 30px;
}

.page-khuyen-mai__hero-cta-button,
.page-khuyen-mai__button {
  display: inline-block;
  padding: 15px 30px;
  background: var(--button-gradient);
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: bold;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__hero-cta-button:hover,
.page-khuyen-mai__button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  opacity: 0.9;
}

.page-khuyen-mai__promotions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-khuyen-mai__promotion-card {
  background: var(--deep-navy);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  transition: transform 0.3s ease;
}

.page-khuyen-mai__promotion-card:hover {
  transform: translateY(-5px);
}

.page-khuyen-mai__promotion-card-image {
  width: 100%;
  height: 250px; /* Fixed height for consistency */
  object-fit: cover;
  display: block;
}

.page-khuyen-mai__promotion-card-content {
  padding: 25px;
  text-align: center;
}

.page-khuyen-mai__promotion-card-title {
  font-size: 1.5em;
  color: var(--gold);
  margin-bottom: 15px;
  font-weight: bold;
}

.page-khuyen-mai__promotion-card-description {
  font-size: 1em;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.page-khuyen-mai__promotion-card-button {
  display: inline-block;
  padding: 10px 20px;
  background: var(--button-gradient);
  color: #ffffff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.95em;
  font-weight: bold;
  transition: background 0.3s ease;
}

.page-khuyen-mai__promotion-card-button:hover {
  opacity: 0.9;
}

.page-khuyen-mai__terms-list,
.page-khuyen-mai__guide-list,
.page-khuyen-mai__benefits-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-khuyen-mai__terms-item,
.page-khuyen-mai__guide-item,
.page-khuyen-mai__benefits-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 15px 20px;
  margin-bottom: 10px;
  font-size: 1.1em;
  color: var(--text-secondary);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__terms-item strong,
.page-khuyen-mai__guide-item strong,
.page-khuyen-mai__benefits-item strong {
  color: var(--gold);
}

.page-khuyen-mai__terms-item a {
  color: var(--glow);
  text-decoration: none;
}

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

.page-khuyen-mai__guide-cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
}

.page-khuyen-mai__button--primary {
  background: var(--button-gradient);
  color: #ffffff;
}

.page-khuyen-mai__button--secondary {
  background: var(--deep-navy);
  color: var(--gold);
  border: 2px solid var(--gold);
}

.page-khuyen-mai__button--secondary:hover {
  background: var(--gold);
  color: var(--deep-navy);
}

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

.page-khuyen-mai__why-choose-image {
  flex: 1;
  max-width: 50%;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  object-fit: cover;
  width: 100%;
  height: auto;
}

.page-khuyen-mai__why-choose-text {
  flex: 1;
}

.page-khuyen-mai__benefits-list {
  margin-top: 20px;
}

.page-khuyen-mai__benefits-item {
  margin-bottom: 15px;
  padding: 10px 15px;
}

.page-khuyen-mai__faq-list {
  margin-top: 40px;
}

.page-khuyen-mai__faq-item {
  background: var(--deep-navy);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 15px;
  padding: 20px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__faq-question {
  font-size: 1.3em;
  color: var(--gold);
  margin-bottom: 10px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.page-khuyen-mai__faq-answer {
  font-size: 1.05em;
  color: var(--text-secondary);
  padding-left: 10px;
  border-left: 3px solid var(--glow);
  margin-top: 15px;
}

.page-khuyen-mai__conclusion-section {
  text-align: center;
  padding: 60px 0;
  background: linear-gradient(180deg, var(--card-bg) 0%, var(--deep-navy) 100%);
  margin-top: 60px;
}

.page-khuyen-mai__conclusion-cta-button {
  margin-top: 30px;
  display: inline-block;
  padding: 18px 35px;
  font-size: 1.2em;
  border-radius: 10px;
}

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

/* Media Queries for responsiveness */
@media (max-width: 1024px) {
  .page-khuyen-mai__hero-content {
    max-width: 90%;
    padding: 25px;
  }

  .page-khuyen-mai__hero-title {
    font-size: clamp(2em, 5vw, 3em);
  }

  .page-khuyen-mai__why-choose-content {
    flex-direction: column;
    text-align: center;
  }

  .page-khuyen-mai__why-choose-image {
    max-width: 80%;
  }

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

  .page-khuyen-mai__text-block {
    font-size: 1em;
  }
}

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

  .page-khuyen-mai__hero-section {
    min-height: 400px;
    padding-top: 10px !important;
  }

  .page-khuyen-mai__hero-content {
    padding: 20px;
    width: 90%;
    box-sizing: border-box;
  }

  .page-khuyen-mai__hero-title {
    font-size: 1.8em;
    margin-bottom: 15px;
  }

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

  .page-khuyen-mai__hero-cta-button,
  .page-khuyen-mai__button,
  .page-khuyen-mai__promotion-card-button,
  .page-khuyen-mai a[class*="button"],
  .page-khuyen-mai a[class*="btn"] {
    padding: 12px 20px;
    font-size: 1em;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-khuyen-mai__guide-cta-buttons {
    flex-direction: column;
    gap: 15px;
    padding-left: 15px;
    padding-right: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

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

  .page-khuyen-mai__promotion-card-image {
    height: 200px; /* Adjust height for mobile */
  }

  .page-khuyen-mai__section-title {
    font-size: 1.8em;
    margin-top: 40px;
    margin-bottom: 25px;
  }

  .page-khuyen-mai__text-block,
  .page-khuyen-mai__terms-item,
  .page-khuyen-mai__guide-item,
  .page-khuyen-mai__benefits-item,
  .page-khuyen-mai__faq-answer {
    font-size: 0.95em;
  }

  .page-khuyen-mai__faq-question {
    font-size: 1.1em;
  }

  .page-khuyen-mai__why-choose-image {
    max-width: 100%;
  }

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

  .page-khuyen-mai__hero-image-wrapper,
  .page-khuyen-mai__promotion-card,
  .page-khuyen-mai__why-choose-content,
  .page-khuyen-mai__faq-item,
  .page-khuyen-mai__conclusion-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
}

/* Specific color contrast rules (as per strict instructions) */
.page-khuyen-mai {
  color: var(--text-main);
  background-color: var(--card-bg);
}

.page-khuyen-mai__text-block {
  color: var(--text-secondary);
}

.page-khuyen-mai__promotion-card {
  background: var(--deep-navy);
  color: var(--text-main);
}

.page-khuyen-mai__promotion-card-title {
  color: var(--gold);
}

.page-khuyen-mai__promotion-card-description {
  color: var(--text-secondary);
}

.page-khuyen-mai__terms-item,
.page-khuyen-mai__guide-item,
.page-khuyen-mai__benefits-item {
  background: var(--card-bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.page-khuyen-mai__terms-item strong,
.page-khuyen-mai__guide-item strong,
.page-khuyen-mai__benefits-item strong {
  color: var(--gold);
}

.page-khuyen-mai__faq-item {
  background: var(--deep-navy);
  border: 1px solid var(--border);
}

.page-khuyen-mai__faq-question {
  color: var(--gold);
}

.page-khuyen-mai__faq-answer {
  color: var(--text-secondary);
  border-left: 3px solid var(--glow);
}

.page-khuyen-mai__conclusion-section {
  background: linear-gradient(180deg, var(--card-bg) 0%, var(--deep-navy) 100%);
}

/* Ensure no filter properties are used on images */
.page-khuyen-mai img {
  filter: none; /* Explicitly disable any potential filter */
}