:root {
  --primary-color: #017439;
  --secondary-color: #FFFFFF;
  --register-login-btn-bg: #C30808;
  --register-login-btn-text: #FFFF00;
  --text-dark: #333333;
  --text-light: #ffffff;
  --border-light: #e0e0e0;
}

.page-khuyen-mai-hoan-tra-hang-ngay {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark); /* Default text color for light body background */
  background-color: var(--secondary-color); /* Body background is white */
}

/* --- Hero Section --- */
.page-khuyen-mai-hoan-tra-hang-ngay__hero-section {
  position: relative;
  display: flex;
  flex-direction: column; /* Ensure image is above content */
  align-items: center;
  text-align: center;
  padding-top: 10px; /* Small top padding, body handles header offset */
  background-color: var(--primary-color); /* Background for the whole section */
  overflow: hidden; /* Prevent image overflow */
}

.page-khuyen-mai-hoan-tra-hang-ngay__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.page-khuyen-mai-hoan-tra-hang-ngay__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover; /* Cover for desktop, will change to contain for mobile */
  max-height: 600px; /* Limit height for hero image */
}

.page-khuyen-mai-hoan-tra-hang-ngay__hero-content {
  position: relative; /* Relative positioning for content below image */
  z-index: 1;
  padding: 40px 20px;
  max-width: 900px;
  width: 100%;
  color: var(--text-light);
  background-color: var(--primary-color); /* Dark background for text content */
}

.page-khuyen-mai-hoan-tra-hang-ngay__main-title {
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--register-login-btn-text); /* Yellow for H1 for emphasis */
  margin-bottom: 20px;
  max-width: 100%; /* Ensure H1 doesn't overflow */
}

.page-khuyen-mai-hoan-tra-hang-ngay__hero-description {
  font-size: 1.1em;
  margin-bottom: 30px;
  max-width: 100%;
}

/* --- General Container & Text Blocks --- */
.page-khuyen-mai-hoan-tra-hang-ngay__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
  width: 100%; /* Ensure container takes full width on smaller screens */
}

.page-khuyen-mai-hoan-tra-hang-ngay__section-title {
  font-size: 2.2em;
  font-weight: bold;
  margin-bottom: 30px;
  text-align: center;
  color: var(--primary-color); /* Section titles use primary color */
}

.page-khuyen-mai-hoan-tra-hang-ngay__text-block {
  margin-bottom: 20px;
  font-size: 1.05em;
  line-height: 1.7;
  color: var(--text-dark);
}

/* --- Buttons --- */
.page-khuyen-mai-hoan-tra-hang-ngay__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
  width: 100%; /* Ensure container takes full width */
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden; /* Prevent button overflow */
}

.page-khuyen-mai-hoan-tra-hang-ngay__btn-primary,
.page-khuyen-mai-hoan-tra-hang-ngay__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  cursor: pointer;
  text-align: center;
  max-width: 100%; /* Ensure button takes full width */
  box-sizing: border-box;
  white-space: normal; /* Allow text wrapping */
  word-wrap: break-word; /* Allow text wrapping */
}

.page-khuyen-mai-hoan-tra-hang-ngay__btn-primary {
  background-color: var(--register-login-btn-bg); /* Use #C30808 for primary CTA */
  color: var(--register-login-btn-text); /* Use #FFFF00 for primary CTA text */
  border: 2px solid var(--register-login-btn-bg);
}

.page-khuyen-mai-hoan-tra-hang-ngay__btn-primary:hover {
  background-color: #B00707; /* Darker red for hover */
  border-color: #B00707;
}

.page-khuyen-mai-hoan-tra-hang-ngay__btn-secondary {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.page-khuyen-mai-hoan-tra-hang-ngay__btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
}

/* --- Section Backgrounds --- */
.page-khuyen-mai-hoan-tra-hang-ngay__light-bg {
  background-color: var(--secondary-color);
  color: var(--text-dark);
}

.page-khuyen-mai-hoan-tra-hang-ngay__dark-bg {
  background-color: var(--primary-color);
  color: var(--text-light);
}

.page-khuyen-mai-hoan-tra-hang-ngay__dark-bg .page-khuyen-mai-hoan-tra-hang-ngay__section-title {
  color: var(--secondary-color); /* Titles in dark sections should be light */
}

.page-khuyen-mai-hoan-tra-hang-ngay__dark-bg .page-khuyen-mai-hoan-tra-hang-ngay__text-block {
  color: var(--text-light);
}

.page-khuyen-mai-hoan-tra-hang-ngay__dark-bg .page-khuyen-mai-hoan-tra-hang-ngay__process-step a {
  color: var(--register-login-btn-text); /* Link in dark section */
}

/* --- Details Section (Cashback Rates) --- */
.page-khuyen-mai-hoan-tra-hang-ngay__details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.page-khuyen-mai-hoan-tra-hang-ngay__card {
  background: var(--secondary-color);
  color: var(--text-dark);
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-khuyen-mai-hoan-tra-hang-ngay__card-image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  margin-bottom: 20px;
  min-width: 200px; /* Min size for all images */
  min-height: 200px;
  object-fit: cover; /* Ensure image fills space */
}

.page-khuyen-mai-hoan-tra-hang-ngay__card-title {
  font-size: 1.5em;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.page-khuyen-mai-hoan-tra-hang-ngay__card-title a {
  color: var(--primary-color);
  text-decoration: none;
}

.page-khuyen-mai-hoan-tra-hang-ngay__card-title a:hover {
  text-decoration: underline;
}

.page-khuyen-mai-hoan-tra-hang-ngay__card-description {
  font-size: 0.95em;
  line-height: 1.6;
  margin-bottom: 15px;
  flex-grow: 1; /* Allow description to take available space */
}

.page-khuyen-mai-hoan-tra-hang-ngay__rate {
  font-size: 1.8em;
  font-weight: bold;
  color: var(--register-login-btn-bg); /* Use red for rates */
  margin-top: auto; /* Push rate to bottom */
}

/* --- Terms Section --- */
.page-khuyen-mai-hoan-tra-hang-ngay__terms-list {
  list-style: none;
  padding-left: 0;
  margin-bottom: 30px;
}

.page-khuyen-mai-hoan-tra-hang-ngay__list-item {
  position: relative;
  padding-left: 30px;
  margin-bottom: 15px;
  font-size: 1.05em;
}

.page-khuyen-mai-hoan-tra-hang-ngay__list-item::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
  font-size: 1.2em;
}

/* --- How To Claim Section --- */
.page-khuyen-mai-hoan-tra-hang-ngay__process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 30px;
  margin-bottom: 40px;
}

.page-khuyen-mai-hoan-tra-hang-ngay__process-step {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  color: var(--text-light);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-khuyen-mai-hoan-tra-hang-ngay__step-number {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--register-login-btn-text); /* Yellow circle */
  color: var(--primary-color); /* Green number */
  font-size: 1.8em;
  font-weight: bold;
  margin-bottom: 15px;
}

.page-khuyen-mai-hoan-tra-hang-ngay__step-title {
  font-size: 1.4em;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--secondary-color);
}

.page-khuyen-mai-hoan-tra-hang-ngay__step-description {
  font-size: 0.95em;
  line-height: 1.6;
  color: var(--text-light);
}

.page-khuyen-mai-hoan-tra-hang-ngay__process-image {
  display: block;
  margin: 0 auto 20px auto;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  min-width: 200px;
  min-height: 200px;
}

/* --- Benefits Section --- */
.page-khuyen-mai-hoan-tra-hang-ngay__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.page-khuyen-mai-hoan-tra-hang-ngay__benefit-card {
  background: var(--secondary-color);
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-light);
}

.page-khuyen-mai-hoan-tra-hang-ngay__benefit-title {
  font-size: 1.4em;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.page-khuyen-mai-hoan-tra-hang-ngay__benefit-description {
  font-size: 0.95em;
  line-height: 1.6;
  color: var(--text-dark);
}

/* --- Other Promotions Section --- */
.page-khuyen-mai-hoan-tra-hang-ngay__promo-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
  margin-bottom: 40px;
}

/* --- FAQ Section --- */
.page-khuyen-mai-hoan-tra-hang-ngay__faq-list {
  margin-top: 30px;
}

.page-khuyen-mai-hoan-tra-hang-ngay__faq-item {
  background: var(--secondary-color);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-khuyen-mai-hoan-tra-hang-ngay__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.15em;
  font-weight: bold;
  color: var(--primary-color);
  cursor: pointer;
  background-color: var(--secondary-color);
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease;
  list-style: none; /* For details/summary */
}

.page-khuyen-mai-hoan-tra-hang-ngay__faq-item[open] .page-khuyen-mai-hoan-tra-hang-ngay__faq-question {
  background-color: #f5f5f5;
  border-bottom: 1px solid var(--border-light);
}

.page-khuyen-mai-hoan-tra-hang-ngay__faq-question::-webkit-details-marker {
  display: none;
}

.page-khuyen-mai-hoan-tra-hang-ngay__faq-qtext {
  flex-grow: 1;
}

.page-khuyen-mai-hoan-tra-hang-ngay__faq-toggle {
  font-size: 1.5em;
  margin-left: 15px;
  color: var(--primary-color);
}

.page-khuyen-mai-hoan-tra-hang-ngay__faq-answer {
  padding: 15px 25px 20px 25px;
  font-size: 1.0em;
  line-height: 1.7;
  color: var(--text-dark);
  background-color: #fdfdfd;
}

.page-khuyen-mai-hoan-tra-hang-ngay__faq-answer p {
  margin-top: 0;
  margin-bottom: 0;
}

/* --- Bottom CTA Section --- */
.page-khuyen-mai-hoan-tra-hang-ngay__cta-bottom-section {
  text-align: center;
  padding: 60px 20px;
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .page-khuyen-mai-hoan-tra-hang-ngay__container {
    padding: 30px 15px;
  }
}