/* style/register.css */
/* body đã padding-top: var(--header-offset) từ shared.css; trang này không cần thêm padding-top cho main hoặc hero. */

:root {
  --primary-color: #26A9E0;
  --secondary-color: #FFFFFF;
  --login-color: #EA7C07;
  --background-color-light: #F8F9FA; /* Slightly off-white for contrast */
  --text-color-dark: #333333;
  --text-color-light: #FFFFFF;
  --border-color: #e0e0e0;
}

.page-register {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color-dark);
  background-color: var(--background-color-light);
}

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

.page-register__section-title {
  font-size: 2.5em;
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
  color: var(--primary-color);
}

.page-register__text-block {
  font-size: 1.1em;
  text-align: center;
  margin-bottom: 30px;
  color: var(--text-color-dark);
}

/* Hero Section */
.page-register__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 10px; /* Small top padding, body handles header offset */
  padding-bottom: 60px;
  min-height: 500px;
  background-color: var(--primary-color);
}

.page-register__hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  filter: brightness(0.6); /* Slightly darken image for text readability */
}

.page-register__hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--text-color-light);
  max-width: 800px;
  padding: 20px;
}

.page-register__main-title {
  font-size: clamp(2.5em, 5vw, 3.5em);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text-color-light);
}

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

/* Buttons */
.page-register__btn-primary {
  display: inline-block;
  background-color: var(--login-color);
  color: var(--text-color-light);
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: background-color 0.3s ease;
  border: none;
  cursor: pointer;
  box-sizing: border-box;
}

.page-register__btn-primary:hover {
  background-color: #d16b06;
}

.page-register__btn-large {
  padding: 18px 40px;
  font-size: 1.3em;
}

/* Intro Section */
.page-register__intro-section {
  padding: 60px 0;
  background-color: var(--background-color-light);
  color: var(--text-color-dark);
}

/* Advantages Section */
.page-register__advantages-section {
  padding: 60px 0;
  background-color: var(--primary-color);
  color: var(--text-color-light);
}

.page-register__advantages-section .page-register__section-title {
  color: var(--text-color-light);
}

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

.page-register__advantage-card {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  transition: transform 0.3s ease;
}

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

.page-register__advantage-icon {
  width: 100%;
  height: auto;
  max-width: 250px;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: 5px;
}

.page-register__advantage-title {
  font-size: 1.5em;
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--text-color-light);
}

.page-register__advantage-description {
  font-size: 1em;
  color: var(--text-color-light);
}

/* Video Section */
.page-register__video-section {
  padding: 60px 0;
  background-color: var(--background-color-light);
  color: var(--text-color-dark);
  padding-top: 10px; /* Small top padding */
}

.page-register__video-wrapper {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.page-register__video-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  width: 100%; /* Ensure desktop width is 100% */
  background: #000;
  margin-bottom: 30px;
}

.page-register__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: pointer;
}

.page-register__btn-video-cta {
  margin-top: 20px;
}

/* FAQ Section */
.page-register__faq-section {
  padding: 60px 0;
  background-color: var(--background-color-light);
  color: var(--text-color-dark);
}

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

.page-register__faq-item {
  background-color: var(--secondary-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-register__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2em;
  font-weight: bold;
  color: var(--primary-color);
  cursor: pointer;
  background-color: #f0f8ff;
  transition: background-color 0.3s ease;
}

.page-register__faq-question:hover {
  background-color: #e0f2ff;
}

.page-register__faq-toggle {
  font-size: 1.5em;
  font-weight: normal;
  margin-left: 15px;
  color: var(--primary-color);
}

.page-register__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease-out, padding 0.5s ease-out;
  padding: 0 25px;
  color: var(--text-color-dark);
}

.page-register__faq-item.active .page-register__faq-answer {
  max-height: 2000px; /* Large enough to accommodate content */
  padding: 15px 25px 20px;
}

.page-register__faq-item.active .page-register__faq-question {
  background-color: #e0f2ff;
}

/* Final CTA Section */
.page-register__cta-final {
  padding: 80px 0;
  background-color: var(--primary-color);
  color: var(--text-color-light);
  text-align: center;
}

.page-register__cta-final .page-register__section-title,
.page-register__cta-final .page-register__text-block {
  color: var(--text-color-light);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-register__main-title {
    font-size: clamp(2.2em, 4.5vw, 3em);
  }
  .page-register__section-title {
    font-size: 2em;
  }
  .page-register__hero-description {
    font-size: 1.1em;
  }
  .page-register__advantages-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-register {
    font-size: 16px;
    line-height: 1.6;
  }
  .page-register__hero-section {
    padding-bottom: 40px;
    min-height: 400px;
  }
  .page-register__hero-content {
    padding: 15px;
  }
  .page-register__main-title {
    font-size: clamp(1.8em, 6vw, 2.5em);
  }
  .page-register__hero-description {
    font-size: 1em;
  }
  .page-register__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }
  .page-register__text-block {
    font-size: 1em;
    margin-bottom: 20px;
  }
  .page-register__advantages-grid {
    grid-template-columns: 1fr;
  }
  .page-register__advantage-card {
    padding: 25px;
  }
  .page-register__advantage-title {
    font-size: 1.3em;
  }
  .page-register__faq-question {
    font-size: 1.1em;
    padding: 18px 20px;
  }
  .page-register__faq-answer {
    padding: 0 20px;
  }
  .page-register__faq-item.active .page-register__faq-answer {
    padding: 12px 20px 18px;
  }

  /* Mobile image responsiveness */
  .page-register img {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-register__section,
  .page-register__card,
  .page-register__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-register__video-section {
    padding-top: 10px !important; /* body đã承担 --header-offset */
  }

  /* Mobile video responsiveness */
  .page-register video,
  .page-register__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-register__video-section,
  .page-register__video-container,
  .page-register__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
  .page-register__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  /* Mobile button responsiveness */
  .page-register__btn-primary,
  .page-register__btn-video-cta,
  .page-register__btn-large,
  .page-register a[class*="button"],
  .page-register 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-register__cta-buttons,
  .page-register__button-group,
  .page-register__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }
  .page-register__cta-final .page-register__btn-primary {
    max-width: 80% !important; /* Allow some margin for large buttons */
    margin: 0 auto;
  }
}