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

.page-register__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10px 0 60px 0; /* body already handles padding-top from header */
  background-color: var(--background);
  overflow: hidden;
}

.page-register__hero-image-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 1;
}

.page-register__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4); /* Darken image for text readability */
}

.page-register__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: 20px;
  color: var(--text-main);
}

.page-register__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-main);
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.page-register__hero-description {
  font-size: 1.2rem;
  margin-bottom: 30px;
  color: var(--text-main);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.page-register__btn-primary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: var(--text-main);
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  border: none;
  cursor: pointer;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-register__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.page-register__section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 40px;
}

.page-register__section-intro {
  font-size: 1.1rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 50px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

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

.page-register__dark-section {
  background-color: var(--background);
  color: var(--text-main);
}

.page-register__benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-register__benefit-card {
  background-color: var(--card-b-g);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border);
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
}

.page-register__benefit-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.page-register__benefit-icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 20px;
  min-width: 200px; /* Enforce min size */
  min-height: 200px; /* Enforce min size */
  max-width: 100%;
  height: auto;
}

.page-register__card-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 15px;
}

.page-register__card-text {
  font-size: 1rem;
  color: var(--text-secondary);
}

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

.page-register__guide-step {
  display: flex;
  align-items: flex-start;
  margin-bottom: 60px;
  gap: 30px;
}

.page-register__step-number {
  font-size: 3rem;
  font-weight: bold;
  color: var(--gold);
  background-color: var(--deep-green);
  border-radius: 50%;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-register__step-content {
  flex-grow: 1;
}

.page-register__step-title {
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 15px;
}

.page-register__step-text {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.page-register__step-text a {
  color: var(--glow);
  text-decoration: underline;
}

.page-register__step-list {
  list-style: none;
  padding-left: 0;
  margin-bottom: 20px;
}

.page-register__step-list li {
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="%2357E38D"><path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z"/></svg>') no-repeat left center;
  background-size: 20px;
  padding-left: 30px;
  margin-bottom: 10px;
  color: var(--text-secondary);
}

.page-register__step-list li strong {
  color: var(--text-main);
}

.page-register__step-image {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  margin-top: 20px;
  min-width: 200px; /* Enforce min size */
  min-height: 200px; /* Enforce min size */
}

.page-register__important-notes {
  background-color: var(--card-b-g);
  border-radius: 12px;
  padding: 30px;
  margin-top: 60px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
}

.page-register__important-notes .page-register__card-title {
  color: var(--gold);
}

.page-register__list-important {
  list-style: none;
  padding-left: 0;
}

.page-register__list-important li {
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="%23F2C14E"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-6h2v6zm0-8h-2V7h2v2z"/></svg>') no-repeat left center;
  background-size: 20px;
  padding-left: 30px;
  margin-bottom: 10px;
  color: var(--text-secondary);
}

.page-register__list-important li strong {
  color: var(--text-main);
}

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

.page-register__faq-list {
  margin-top: 50px;
}

.page-register__faq-item {
  background-color: var(--card-b-g);
  border-radius: 12px;
  margin-bottom: 20px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border);
  overflow: hidden;
}

.page-register__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: background-color 0.3s ease;
  list-style: none; /* For details/summary */
}

.page-register__faq-question::-webkit-details-marker {
  display: none;
}

.page-register__faq-question:hover {
  background-color: var(--deep-green);
}

.page-register__faq-qtext {
  flex-grow: 1;
}

.page-register__faq-toggle {
  font-size: 2rem;
  line-height: 1;
  margin-left: 20px;
  color: var(--glow);
}

.page-register__faq-answer {
  padding: 0 25px 20px;
  font-size: 1rem;
  color: var(--text-secondary);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.page-register__faq-item[open] .page-register__faq-answer {
  max-height: 500px; /* Sufficiently large to show content */
  padding-top: 10px;
}

/* For non-details based FAQ, if applicable */
.page-register__faq-item.active .page-register__faq-answer {
  max-height: 500px !important;
  padding-top: 10px;
}

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

.page-register__conclusion-text {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-register__btn-large {
  padding: 18px 40px;
  font-size: 1.2rem;
}

/* Responsive styles */
@media (max-width: 1024px) {
  .page-register__hero-content {
    max-width: 700px;
  }

  .page-register__main-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }

  .page-register__hero-description {
    font-size: 1.1rem;
  }

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

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

  .page-register__step-number {
    margin-bottom: 20px;
  }

  .page-register__step-list li {
    text-align: left;
    background-position: left top 5px;
  }
}

@media (max-width: 768px) {
  .page-register {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-register__hero-section {
    padding: 10px 15px 40px 15px;
  }

  .page-register__hero-content {
    padding: 15px;
  }

  .page-register__main-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-register__hero-description {
    font-size: 1rem;
    margin-bottom: 25px;
  }

  .page-register__btn-primary,
  .page-register__btn-large {
    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;
    font-size: 1rem;
  }

  .page-register__section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 30px;
  }

  .page-register__section-intro {
    font-size: 1rem;
    margin-bottom: 40px;
    padding: 0 15px;
  }

  .page-register__benefits-section,
  .page-register__guide-section,
  .page-register__faq-section,
  .page-register__conclusion-section {
    padding: 50px 0;
  }

  .page-register__container {
    padding: 0 15px;
  }

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

  .page-register__benefit-card {
    padding: 20px;
  }

  .page-register__guide-step {
    margin-bottom: 40px;
    gap: 20px;
  }

  .page-register__step-title {
    font-size: 1.5rem;
  }

  .page-register__step-text,
  .page-register__step-list li,
  .page-register__card-text {
    font-size: 0.95rem;
  }

  .page-register__important-notes {
    padding: 20px;
    margin-top: 40px;
  }

  .page-register__faq-question {
    font-size: 1.1rem;
    padding: 15px 20px;
  }

  .page-register__faq-toggle {
    font-size: 1.8rem;
  }

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

  .page-register__conclusion-text {
    font-size: 1rem;
  }

  /* Mobile responsive image styles */
  .page-register img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-register__section,
  .page-register__card,
  .page-register__container,
  .page-register__hero-image-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-register__hero-section {
    padding-top: 10px !important; /* body đã xử lý --header-offset */
  }
  .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;
  }
}

@media (max-width: 480px) {
  .page-register__step-number {
    width: 60px;
    height: 60px;
    font-size: 2.5rem;
  }

  .page-register__main-title {
    font-size: clamp(1.6rem, 8vw, 2.2rem);
  }

  .page-register__section-title {
    font-size: clamp(1.4rem, 7vw, 1.8rem);
  }
}