:root {
  --primary-color: #0A2463;
  --secondary-color: #E34234;
  --text-light: #ffffff;
  --text-dark: #333333;
  --background-dark: #0a0a0a; /* From shared.css body background */
  --background-light: #f8f9fa; /* For contrast sections */
  --border-color: #e0e0e0;
  --form-input-bg: rgba(255, 255, 255, 0.1);
  --form-input-border: rgba(255, 255, 255, 0.2);
  --form-label-color: #f0f0f0;
}

.page-register {
  color: var(--text-light); /* Default text color for dark body background */
  background-color: var(--background-dark); /* Ensure consistency with body */
  line-height: 1.6;
  font-family: 'Arial', sans-serif;
}

/* Fixed Header Offset */
.page-register.page-content {
  padding-top: var(--header-offset, 120px);
  margin-top: 0;
}

/* Global image responsive rules */
.page-register img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Hero Section */
.page-register__hero-section {
  position: relative;
  padding: 80px 20px; /* Adjust padding as needed, padding-top handled by main */
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  text-align: center;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.page-register__hero-container {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.page-register__hero-title {
  font-size: 3.2em;
  color: var(--text-light);
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: bold;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-register__hero-description {
  font-size: 1.2em;
  color: var(--text-light);
  margin-bottom: 40px;
  line-height: 1.5;
  opacity: 0.9;
}

.page-register__btn-primary {
  display: inline-block;
  background-color: var(--secondary-color);
  color: var(--text-light);
  padding: 15px 35px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: background-color 0.3s ease, transform 0.2s ease;
  border: none;
  cursor: pointer;
  max-width: 100%; /* For mobile responsiveness */
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-register__btn-primary:hover {
  background-color: #c0362c; /* Darkened E34234 */
  transform: translateY(-3px);
}

/* General Section Styling */
.page-register__section-title {
  font-size: 2.5em;
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
  color: var(--text-light); /* Default to light text for dark body */
}

.page-register__section-description {
  font-size: 1.1em;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 60px auto;
  color: var(--text-light); /* Default to light text for dark body */
  opacity: 0.9;
}

/* Form Section */
.page-register__form-section {
  padding: 80px 20px;
  background-color: var(--primary-color); /* Dark blue background */
  color: var(--text-light);
}

.page-register__form-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-register__form-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.page-register__form-illustration {
  text-align: center;
}

.page-register__form-illustration img {
  width: 100%;
  height: auto;
  max-width: 600px; /* Max width for image */
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-register__registration-form {
  background: rgba(0, 0, 0, 0.3); /* Slightly transparent dark background */
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
}

.page-register__form-group {
  margin-bottom: 25px;
}

.page-register__form-label {
  display: block;
  margin-bottom: 10px;
  font-weight: bold;
  color: var(--form-label-color);
  font-size: 1.05em;
}

.page-register__form-input {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--form-input-border);
  border-radius: 8px;
  background-color: var(--form-input-bg);
  color: var(--text-light);
  font-size: 1em;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  box-sizing: border-box;
}

.page-register__form-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.page-register__form-input:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(227, 66, 52, 0.3);
}

.page-register__captcha-group {
  display: flex;
  align-items: center;
  gap: 15px;
}

.page-register__captcha-input {
  flex-grow: 1;
}

.page-register__captcha-image {
  background-color: var(--text-light);
  color: var(--primary-color);
  padding: 10px 15px;
  border-radius: 8px;
  font-weight: bold;
  font-size: 1.2em;
  letter-spacing: 2px;
  user-select: none;
  flex-shrink: 0;
  width: 100px; /* Fixed width for captcha image */
  text-align: center;
}

.page-register__captcha-refresh {
  background-color: var(--secondary-color);
  color: var(--text-light);
  padding: 10px 15px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9em;
  transition: background-color 0.3s ease;
  flex-shrink: 0;
}

.page-register__captcha-refresh:hover {
  background-color: #c0362c; /* Darkened E34234 */
}

.page-register__form-agreement {
  display: flex;
  align-items: flex-start;
  margin-bottom: 30px;
}

.page-register__form-checkbox {
  margin-right: 10px;
  margin-top: 4px;
  flex-shrink: 0;
}

.page-register__form-checkbox-label {
  color: var(--form-label-color);
  font-size: 0.95em;
}

.page-register__link {
  color: var(--secondary-color);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.page-register__link:hover {
  color: #f06a60; /* Lightened E34234 */
  text-decoration: underline;
}

.page-register__submit-button {
  width: 100%;
  padding: 18px;
  font-size: 1.2em;
  border-radius: 8px;
  text-align: center;
}

.page-register__login-prompt {
  text-align: center;
  margin-top: 25px;
  color: var(--form-label-color);
  font-size: 0.95em;
}

/* Benefits Section */
.page-register__benefits-section {
  padding: 80px 20px;
  background-color: var(--background-light); /* Light background for contrast */
  color: var(--text-dark); /* Dark text on light background */
}

.page-register__benefits-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-register__benefits-section .page-register__section-title,
.page-register__benefits-section .page-register__section-description {
  color: var(--text-dark); /* Override for light section */
}

.page-register__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-register__benefit-card {
  background: var(--text-light); /* White card background */
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--text-dark); /* Dark text inside card */
  border: 1px solid var(--border-color);
}

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

.page-register__benefit-card img {
  width: 100%;
  height: 300px; /* Fixed height for consistent look */
  object-fit: cover;
  margin-bottom: 20px;
  border-radius: 8px;
}

.page-register__benefit-title {
  font-size: 1.5em;
  font-weight: bold;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-register__benefit-text {
  font-size: 1em;
  line-height: 1.6;
  color: var(--text-dark);
}

/* Security Section */
.page-register__security-section {
  padding: 80px 20px;
  background-color: var(--primary-color); /* Dark blue background */
  color: var(--text-light);
}

.page-register__security-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-register__security-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  text-align: center;
}

.page-register__feature-item {
  background: rgba(0, 0, 0, 0.3); /* Slightly transparent dark background */
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-register__feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-register__feature-item img {
  width: 200px; /* Enforced minimum size */
  height: 200px; /* Enforced minimum size */
  object-fit: contain;
  margin: 0 auto 20px;
  display: block;
}

.page-register__feature-title {
  font-size: 1.4em;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--text-light);
}

.page-register__feature-text {
  font-size: 0.95em;
  line-height: 1.5;
  color: var(--form-label-color);
}

/* FAQ Section */
.page-register__faq-section {
  padding: 80px 20px;
  background-color: var(--background-light); /* Light background for contrast */
  color: var(--text-dark);
}

.page-register__faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.page-register__faq-section .page-register__section-title {
  color: var(--text-dark); /* Override for light section */
}

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

/* FAQ容器样式 */
.page-register__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
  background: var(--text-light); /* White background for item */
  border: 1px solid var(--border-color);
}

/* FAQ默认状态 - 答案隐藏 */
.page-register__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 20px;
  opacity: 0;
  color: var(--text-dark);
}

/* FAQ展开状态 - 🚨 使用!important和足够大的max-height确保一定能展开 */
.page-register__faq-item.active .page-register__faq-answer {
  max-height: 2000px !important; /* 🚨 Sử dụng !important để đảm bảo ưu tiên, giá trị đủ lớn để chứa mọi nội dung */
  padding: 20px !important;
  opacity: 1;
  background: #f9f9f9; /* Slightly off-white for distinction */
  border-radius: 0 0 5px 5px;
}

/* 问题样式 */
.page-register__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: var(--text-light);
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
  color: var(--text-dark);
}

.page-register__faq-item:not(.active) .page-register__faq-question {
  border-radius: 5px; /* Apply border-radius when not active */
}

.page-register__faq-item.active .page-register__faq-question {
  border-bottom-color: transparent; /* Remove bottom border when active */
  border-radius: 5px 5px 0 0;
}

.page-register__faq-question:hover {
  background: #f5f5f5;
  border-color: #d0d0d0;
}

.page-register__faq-question:active {
  background: #eeeeee;
}

/* 问题标题样式 */
.page-register__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 1.1em;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* 防止h3标签阻止点击事件 */
  color: var(--text-dark);
}

/* 切换图标 */
.page-register__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: var(--primary-color); /* Use primary color for toggle */
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* 防止图标阻止点击事件 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-register__faq-item.active .page-register__faq-toggle {
  color: var(--secondary-color); /* Change color when active */
  transform: rotate(45deg); /* Plus to X */
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-register__hero-title {
    font-size: 2.8em;
  }
  .page-register__hero-description {
    font-size: 1.1em;
  }
  .page-register__section-title {
    font-size: 2em;
  }
  .page-register__form-layout {
    grid-template-columns: 1fr;
  }
  .page-register__form-illustration {
    order: 2; /* Move illustration below form on smaller screens */
  }
  .page-register__registration-form {
    order: 1;
  }
}

@media (max-width: 768px) {
  .page-register.page-content {
    padding-top: var(--header-offset, 120px) !important;
  }
  .page-register__hero-section,
  .page-register__form-section,
  .page-register__benefits-section,
  .page-register__security-section,
  .page-register__faq-section {
    padding: 50px 15px;
  }

  .page-register__hero-title {
    font-size: 2em;
  }
  .page-register__hero-description {
    font-size: 1em;
  }
  .page-register__btn-primary {
    padding: 12px 25px;
    font-size: 1em;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  
  /* Button containers mobile adaptation */
  .page-register__hero-container,
  .page-register__form-container,
  .page-register__benefits-container,
  .page-register__security-container,
  .page-register__faq-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
  }

  .page-register__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }
  .page-register__section-description {
    font-size: 0.95em;
    margin-bottom: 40px;
  }

  .page-register__form-layout {
    gap: 40px;
  }
  .page-register__registration-form {
    padding: 30px;
  }
  .page-register__captcha-group {
    flex-wrap: wrap;
    gap: 10px;
  }
  .page-register__captcha-input {
    flex-grow: 1;
  }
  .page-register__captcha-image {
    width: 90px;
    font-size: 1em;
  }
  .page-register__captcha-refresh {
    font-size: 0.8em;
    padding: 8px 12px;
  }
  .page-register__form-agreement {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-register__form-checkbox-label {
    margin-top: 10px;
    font-size: 0.9em;
  }
  .page-register__submit-button {
    padding: 15px;
    font-size: 1.1em;
  }

  .page-register__benefits-grid,
  .page-register__security-features {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-register__benefit-card img {
    height: auto !important;
    min-height: 200px !important;
  }
  .page-register__feature-item img {
    width: 200px !important;
    height: 200px !important;
    min-width: 200px !important;
    min-height: 200px !important;
  }

  /* FAQ mobile styles */
  .page-register__faq-question {
    padding: 15px;
    flex-wrap: wrap;
  }
  
  .page-register__faq-question h3 {
    font-size: 15px;
    margin-bottom: 0;
    width: calc(100% - 40px);
  }
  
  .page-register__faq-toggle {
    margin-left: 10px;
    width: 24px;
    height: 24px;
    font-size: 20px;
  }
  
  .page-register__faq-answer {
    padding: 0 15px;
  }
  
  .page-register__faq-item.active .page-register__faq-answer {
    padding: 15px !important;
  }

  /* All images responsive for mobile */
  .page-register img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-register__form-illustration img {
    max-width: 100% !important;
    width: auto !important; 
    height: auto !important; 
    min-width: 200px !important; 
    min-height: 200px !important; 
  }
}