/* style/khuyen-mai.css */

:root {
  --page-khuyen-mai-primary-color: #E53935;
  --page-khuyen-mai-secondary-color: #FF5A4F;
  --page-khuyen-mai-text-main: #333333;
  --page-khuyen-mai-card-bg: #FFFFFF;
  --page-khuyen-mai-bg-light: #F5F7FA;
  --page-khuyen-mai-border-color: #E0E0E0;
}

.page-khuyen-mai {
  color: var(--page-khuyen-mai-text-main);
  background-color: var(--page-khuyen-mai-bg-light);
}

.page-khuyen-mai__hero-section {
  padding-top: 10px; /* Adjusted for shared header offset */
  padding-bottom: 60px;
  background-color: var(--page-khuyen-mai-bg-light);
}

.page-khuyen-mai__hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
}

.page-khuyen-mai__hero-content {
  flex: 1 1 45%;
  min-width: 300px;
  text-align: left;
  color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__hero-title {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--page-khuyen-mai-primary-color);
  margin-bottom: 20px;
  max-width: 600px;
}

.page-khuyen-mai__hero-description {
  font-size: 1.15em;
  line-height: 1.6;
  margin-bottom: 30px;
  max-width: 600px;
}

.page-khuyen-mai__hero-cta-group {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.page-khuyen-mai__hero-image-wrapper {
  flex: 1 1 45%;
  min-width: 300px;
  text-align: center;
}

.page-khuyen-mai__hero-image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__btn-primary {
  background: linear-gradient(180deg, var(--page-khuyen-mai-secondary-color) 0%, var(--page-khuyen-mai-primary-color) 100%);
  color: #ffffff;
  border: none;
}

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

.page-khuyen-mai__btn-secondary {
  background: var(--page-khuyen-mai-card-bg);
  color: var(--page-khuyen-mai-primary-color);
  border: 2px solid var(--page-khuyen-mai-primary-color);
}

.page-khuyen-mai__btn-secondary:hover {
  background: var(--page-khuyen-mai-primary-color);
  color: #ffffff;
  transform: translateY(-2px);
}

.page-khuyen-mai__promo-grid-section {
  padding: 60px 0;
  background-color: var(--page-khuyen-mai-bg-light);
}

.page-khuyen-mai__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  box-sizing: border-box;
}

.page-khuyen-mai__section-title {
  font-weight: 700;
  text-align: center;
  color: var(--page-khuyen-mai-primary-color);
  margin-bottom: 20px;
  font-size: 2.5em;
}

.page-khuyen-mai__section-description {
  text-align: center;
  font-size: 1.1em;
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto 50px;
  color: var(--page-khuyen-mai-text-main);
}

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

.page-khuyen-mai__promo-card {
  background: var(--page-khuyen-mai-card-bg);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--page-khuyen-mai-border-color);
  color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__promo-card-media {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.page-khuyen-mai__promo-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

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

.page-khuyen-mai__promo-card-title {
  font-size: 1.4em;
  font-weight: 600;
  color: var(--page-khuyen-mai-primary-color);
  margin-bottom: 15px;
  line-height: 1.4;
}

.page-khuyen-mai__promo-card-text {
  font-size: 1em;
  line-height: 1.6;
  margin-bottom: 25px;
  flex-grow: 1;
}

.page-khuyen-mai__promo-card-btn {
  width: 100%;
  text-align: center;
  padding: 12px 20px;
  font-size: 1em;
}

.page-khuyen-mai__faq-section {
  padding: 60px 0;
  background-color: var(--page-khuyen-mai-primary-color); /* Deep red background */
  color: #ffffff; /* White text for contrast */
}

.page-khuyen-mai__faq-section .page-khuyen-mai__section-title {
  color: #ffffff; /* White title for contrast */
  margin-bottom: 40px;
}

.page-khuyen-mai__faq-section .page-khuyen-mai__section-description {
  color: #ffffff;
}

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

.page-khuyen-mai__faq-item {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: #ffffff;
}

.page-khuyen-mai__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.15em;
  font-weight: 600;
  cursor: pointer;
  color: #ffffff;
  list-style: 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: 1.5em;
  line-height: 1;
  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;
  font-size: 1em;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
}

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

/* --- Mobile Responsive Styles (max-width: 768px) --- */
@media (max-width: 768px) {
  .page-khuyen-mai {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-khuyen-mai__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }

  .page-khuyen-mai__hero-container {
    flex-direction: column;
    padding: 30px 15px;
    gap: 30px;
  }

  .page-khuyen-mai__hero-content {
    text-align: center;
    min-width: unset;
    width: 100%;
  }

  .page-khuyen-mai__hero-title {
    font-size: 1.8em;
    margin-bottom: 15px;
    max-width: 100%;
  }

  .page-khuyen-mai__hero-description {
    font-size: 1em;
    margin-bottom: 25px;
    max-width: 100%;
  }

  .page-khuyen-mai__hero-cta-group {
    flex-direction: column;
    gap: 10px;
  }

  .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-image-wrapper {
    min-width: unset;
    width: 100%;
  }

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

  .page-khuyen-mai__promo-grid-section,
  .page-khuyen-mai__faq-section {
    padding: 40px 0;
  }

  .page-khuyen-mai__container {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

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

  .page-khuyen-mai__section-description {
    font-size: 0.95em;
    margin-bottom: 30px;
  }

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

  .page-khuyen-mai__promo-card-media {
    height: 180px;
  }

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

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

  .page-khuyen-mai__promo-card-title {
    font-size: 1.2em;
    margin-bottom: 10px;
  }

  .page-khuyen-mai__promo-card-text {
    font-size: 0.9em;
    margin-bottom: 20px;
  }

  .page-khuyen-mai__faq-item,
  .page-khuyen-mai__faq-question,
  .page-khuyen-mai__faq-answer {
    font-size: 0.95em;
  }

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

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

  /* General image responsiveness for content area */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-khuyen-mai__promo-card {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 0;
  }
}

/* --- Mobile Responsive Styles (max-width: 480px) --- */
@media (max-width: 480px) {
  .page-khuyen-mai__hero-title {
    font-size: 1.6em;
  }

  .page-khuyen-mai__section-title {
    font-size: 1.6em;
  }

  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary {
    font-size: 0.95em;
    padding: 12px 20px;
  }
}