:root {
  --primary-color: #0A246A;
  --secondary-color: #FFD700;
  --text-dark: #333333;
  --text-light: #ffffff;
  --background-light: #f8f8f8;
  --background-dark: #0A246A;
  --border-color: #e0e0e0;
}

.page-register {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: #ffffff; /* Default body background is white */
  padding-top: 120px; /* Ensure content is not hidden by fixed header on desktop */
}

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

.page-register__section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.3;
}

.page-register__section-description {
  font-size: 18px;
  text-align: center;
  margin-bottom: 30px;
  color: var(--text-dark);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-register__hero-section {
  background: var(--background-dark);
  color: var(--text-light);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

.page-register__main-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--secondary-color);
  line-height: 1.2;
}

.page-register__hero-description {
  font-size: 20px;
  margin-bottom: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  color: #f0f0f0;
}

.page-register__form-wrapper {
  background: #ffffff;
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  max-width: 600px;
  margin: 40px auto;
  text-align: left;
  box-sizing: border-box;
}

.page-register__registration-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-register__form-group {
  display: flex;
  flex-direction: column;
}

.page-register__form-label {
  font-size: 16px;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-dark);
}

.page-register__form-input {
  padding: 12px 15px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 16px;
  width: 100%;
  box-sizing: border-box;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-register__form-input::placeholder {
  color: #aaa;
}

.page-register__form-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(10, 36, 106, 0.2);
  outline: none;
}

.page-register__form-terms {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

.page-register__checkbox {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.page-register__checkbox-label {
  font-size: 15px;
  color: var(--text-dark);
}

.page-register__terms-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.page-register__terms-link:hover {
  color: var(--secondary-color);
}

.page-register__btn-primary {
  display: inline-block;
  padding: 15px 30px;
  background: var(--primary-color);
  color: var(--text-light);
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
  width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-register__btn-primary:hover {
  background: #071a4f;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.page-register__btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.page-register__submit-button {
  margin-top: 20px;
}

.page-register__login-prompt {
  font-size: 16px;
  margin-top: 20px;
  color: #f0f0f0;
}

.page-register__login-link {
  color: var(--secondary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.page-register__login-link:hover {
  text-decoration: underline;
}

.page-register__benefits-section {
  padding: 80px 0;
  background: var(--background-light);
  color: var(--text-dark);
}

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

.page-register__benefit-card {
  background: #ffffff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-register__benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.page-register__benefit-icon {
  width: 100%;
  max-width: 400px;
  height: auto;
  margin-bottom: 20px;
  border-radius: 8px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-register__benefit-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-register__benefit-text {
  font-size: 16px;
  color: var(--text-dark);
}

.page-register__guide-section {
  padding: 80px 0;
  background: #ffffff;
  color: var(--text-dark);
}

.page-register__guide-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 50px;
}

.page-register__guide-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-register__guide-item:nth-child(even) {
  flex-direction: column-reverse; /* Alternate layout for visual interest */
}

.page-register__guide-step-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.page-register__guide-item p {
  font-size: 17px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 20px;
}

.page-register__guide-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.page-register__guide-link:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.page-register__guide-image {
  width: 100%;
  max-width: 800px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  margin-top: 20px;
}

.page-register__info-list {
  list-style: disc inside;
  text-align: left;
  max-width: 600px;
  margin: 20px auto;
  padding-left: 20px;
}

.page-register__info-list li {
  margin-bottom: 10px;
  font-size: 16px;
}

.page-register__guide-tip {
  font-style: italic;
  margin-top: 40px;
  font-size: 16px;
  text-align: center;
  color: #666;
}

.page-register__cta-wrapper {
  text-align: center;
  margin-top: 50px;
}

.page-register__security-section {
  background: var(--background-dark);
  color: var(--text-light);
  padding: 80px 0;
}

.page-register__security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-register__security-item {
  text-align: center;
  background: rgba(255, 255, 255, 0.08);
  padding: 30px;
  border-radius: 10px;
  transition: background-color 0.3s ease;
}

.page-register__security-item:hover {
  background: rgba(255, 255, 255, 0.15);
}

.page-register__security-icon {
  width: 100%;
  max-width: 200px;
  height: auto;
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-register__security-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--secondary-color);
  margin-bottom: 15px;
}

.page-register__security-text {
  font-size: 16px;
  color: #f0f0f0;
}

.page-register__promotions-section {
  padding: 80px 0;
  background: var(--background-light);
  color: var(--text-dark);
}

.page-register__promo-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
}

.page-register__promo-item {
  background: #ffffff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.07);
  transition: transform 0.3s ease;
}

.page-register__promo-item:hover {
  transform: translateY(-3px);
}

.page-register__promo-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.page-register__promo-item p {
  font-size: 16px;
  color: var(--text-dark);
}

.page-register__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  background: var(--secondary-color);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
  width: 100%;
  max-width: 400px;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  margin-top: 30px;
}

.page-register__btn-secondary:hover {
  background: #e6c200;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.page-register__btn-secondary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.page-register__faq-section {
  padding: 80px 0;
  background: #ffffff;
  color: var(--text-dark);
}

.page-register__faq-list {
  max-width: 900px;
  margin: 40px auto 0 auto;
}

/* FAQ容器样式 */
.page-register__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
}

/* FAQ mặc định - ẩn câu trả lời */
.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 15px;
  opacity: 0;
  color: var(--text-dark);
}

/* FAQ khi mở - 🚨 Sử dụng !important và max-height đủ lớn để đảm bảo mở được */
.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 */
  padding: 20px 15px !important;
  opacity: 1;
  background: var(--background-light);
  border-radius: 0 0 5px 5px;
}

/* Kiểu câu hỏi */
.page-register__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

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

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

/* Kiểu tiêu đề câu hỏi */
.page-register__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--primary-color);
  pointer-events: none; /* Ngăn h3 chặn sự kiện click */
}

/* Biểu tượng chuyển đổi */
.page-register__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: #666;
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* Ngăn biểu tượng chặn sự kiện click */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-register__faq-item.active .page-register__faq-toggle {
  color: var(--primary-color);
  transform: rotate(45deg); /* Biểu tượng xoay khi mở */
}

.page-register__cta-final-section {
  background: var(--background-dark);
  color: var(--text-light);
  padding: 80px 0;
  text-align: center;
}

.page-register__final-cta-button {
  margin-top: 40px;
  max-width: 500px;
  font-size: 20px;
}

.page-register__small-text {
  font-size: 15px;
  margin-top: 20px;
  color: #c0c0c0;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-register__main-title {
    font-size: 42px;
  }
  .page-register__section-title {
    font-size: 32px;
  }
  .page-register__hero-description {
    font-size: 18px;
  }
}

@media (max-width: 768px) {
  .page-register {
    padding-top: 100px !important; /* Mobile: Adjust padding for fixed header */
    font-size: 16px;
    line-height: 1.6;
  }

  .page-register__main-title {
    font-size: 36px;
  }
  .page-register__section-title {
    font-size: 28px;
  }
  .page-register__section-description {
    font-size: 16px;
  }
  .page-register__hero-section,
  .page-register__benefits-section,
  .page-register__guide-section,
  .page-register__security-section,
  .page-register__promotions-section,
  .page-register__faq-section,
  .page-register__cta-final-section {
    padding: 60px 0;
  }

  .page-register__form-wrapper {
    padding: 30px;
    margin: 30px auto;
  }

  .page-register__form-label,
  .page-register__form-input,
  .page-register__checkbox-label {
    font-size: 15px;
  }

  .page-register__btn-primary,
  .page-register__btn-secondary {
    font-size: 16px;
    padding: 12px 20px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-register__benefits-grid,
  .page-register__security-grid,
  .page-register__promo-list {
    grid-template-columns: 1fr;
  }

  .page-register__benefit-card,
  .page-register__security-item,
  .page-register__promo-item {
    padding: 25px;
  }

  .page-register__benefit-title,
  .page-register__security-title,
  .page-register__promo-title {
    font-size: 20px;
  }

  .page-register__guide-step-title {
    font-size: 24px;
  }

  .page-register__guide-image,
  .page-register__benefit-icon,
  .page-register__security-icon {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

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

  /* FAQ mobile */
  .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;
  }

  .page-register__final-cta-button {
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .page-register__main-title {
    font-size: 32px;
  }
  .page-register__section-title {
    font-size: 24px;
  }
  .page-register__hero-description {
    font-size: 16px;
  }
  .page-register__form-wrapper {
    padding: 20px;
  }
  .page-register__submit-button {
    font-size: 15px;
  }
  .page-register__guide-step-title {
    font-size: 22px;
  }
}