:root {
  --bg-main: #08160F;
  --bg-card: #11271B;
  --text-main: #F2FFF6;
  --text-secondary: #A7D9B8;
  --btn-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --border-color: #2E7A4E;
  --glow-color: #57E38D;
  --gold-color: #F2C14E;
  --divider-color: #1E3A2A;
  --deep-green: #0A4B2C;
}

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

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

.page-register__section-title {
  font-size: 2.5em;
  color: var(--gold-color);
  text-align: center;
  margin-bottom: 20px;
  font-weight: bold;
  text-shadow: 0 0 8px rgba(242, 193, 78, 0.4);
}

.page-register__sub-title {
  font-size: 1.8em;
  color: var(--text-main);
  margin-top: 30px;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-register__section-description {
  font-size: 1.1em;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-register__text-block p {
  color: var(--text-secondary);
  margin-bottom: 15px;
}

.page-register__card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  color: var(--text-main);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-register__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4), 0 0 15px var(--glow-color);
}

.page-register__card-title {
  font-size: 1.4em;
  color: var(--gold-color);
  margin-top: 15px;
  margin-bottom: 10px;
  font-weight: 700;
}

.page-register__card-description {
  color: var(--text-secondary);
  font-size: 0.95em;
}

.page-register__btn-primary,
.page-register__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  white-space: nowrap;
  box-sizing: border-box;
}

.page-register__btn-primary {
  background: var(--btn-gradient);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 10px rgba(42, 209, 111, 0.4);
}

.page-register__btn-primary:hover {
  background: linear-gradient(180deg, #13994A 0%, #2AD16F 100%);
  box-shadow: 0 6px 15px rgba(42, 209, 111, 0.6);
}

.page-register__btn-secondary {
  background-color: transparent;
  color: var(--glow-color);
  border: 2px solid var(--glow-color);
}

.page-register__btn-secondary:hover {
  background-color: var(--glow-color);
  color: var(--bg-main);
}

.page-register__btn-small {
  padding: 10px 20px;
  font-size: 0.9em;
}

.page-register__btn-large {
  padding: 18px 36px;
  font-size: 1.2em;
}

/* Hero Section */
.page-register__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 0 60px 0; /* body already handles padding-top */
  overflow: hidden;
}

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

.page-register__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4);
}

.page-register__hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  padding: 20px;
}

.page-register__main-title {
  color: var(--gold-color);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  text-shadow: 0 0 15px rgba(242, 193, 78, 0.6);
  font-size: clamp(2.5em, 5vw, 3.8em); /* Responsive font size for H1 */
}

.page-register__hero-description {
  color: var(--text-main);
  font-size: 1.2em;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-register__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Intro Section */
.page-register__intro-section {
  padding: 80px 0;
  text-align: center;
}

.page-register__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-register__feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-register__feature-icon {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: 50%;
  border: 3px solid var(--glow-color);
  padding: 10px;
  box-shadow: 0 0 10px rgba(87, 227, 141, 0.5);
}

/* Steps Section */
.page-register__steps-section {
  padding: 80px 0;
  background-color: var(--deep-green);
  text-align: center;
}

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

.page-register__step-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-register__step-number {
  width: 60px;
  height: 60px;
  background-color: var(--gold-color);
  color: var(--bg-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2em;
  font-weight: bold;
  margin-bottom: 20px;
  box-shadow: 0 0 15px rgba(242, 193, 78, 0.7);
}

.page-register__step-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 8px;
  margin-top: 20px;
  border: 1px solid var(--border-color);
}

/* Promotions Section */
.page-register__promotions-section {
  padding: 80px 0;
  text-align: center;
}

.page-register__promo-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-register__promo-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  border: 1px solid var(--border-color);
}

.page-register__promo-note {
  margin-top: 40px;
  font-style: italic;
  font-size: 1.1em;
}

/* Security Section */
.page-register__security-section {
  padding: 80px 0;
  background-color: var(--deep-green);
}

.page-register__security-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
  margin-top: 50px;
}

.page-register__security-image {
  flex: 1;
  min-width: 300px;
  height: 350px;
  object-fit: cover;
  border-radius: 12px;
  border: 2px solid var(--border-color);
  box-shadow: 0 0 15px rgba(46, 122, 78, 0.6);
}

.page-register__security-text {
  flex: 2;
  min-width: 300px;
}

.page-register__security-text p {
  color: var(--text-secondary);
  margin-bottom: 15px;
}

/* Games Section */
.page-register__games-section {
  padding: 80px 0;
  text-align: center;
}

.page-register__games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-register__game-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 15px;
  border: 1px solid var(--border-color);
}

.page-register__games-cta {
  margin-top: 60px;
}

/* Support Section */
.page-register__support-section {
  padding: 80px 0;
  background-color: var(--deep-green);
}

.page-register__support-contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
  margin-top: 50px;
}

.page-register__support-image {
  flex: 1;
  min-width: 300px;
  height: 350px;
  object-fit: cover;
  border-radius: 12px;
  border: 2px solid var(--border-color);
  box-shadow: 0 0 15px rgba(46, 122, 78, 0.6);
}

.page-register__contact-info {
  flex: 2;
  min-width: 300px;
}

.page-register__contact-info ul {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.page-register__contact-info li {
  margin-bottom: 10px;
  font-size: 1.1em;
  color: var(--text-secondary);
}

.page-register__contact-link {
  color: var(--glow-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* FAQ Section */
.page-register__faq-section {
  padding: 80px 0;
}

.page-register__faq-list {
  max-width: 900px;
  margin: 50px auto 0 auto;
}

.page-register__faq-item {
  margin-bottom: 15px;
  overflow: hidden;
}

.page-register__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.1em;
  font-weight: bold;
  color: var(--text-main);
  background-color: var(--deep-green);
  border-bottom: 1px solid var(--border-color);
  border-radius: 10px;
  transition: background-color 0.3s ease;
}

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

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

.page-register__faq-answer {
  padding: 20px 25px;
  background-color: var(--bg-card);
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  border-radius: 0 0 10px 10px;
}

.page-register__faq-item[open] .page-register__faq-question {
  border-radius: 10px 10px 0 0;
}

.page-register__faq-item[open] .page-register__faq-toggle {
  content: '−';
}

/* Conclusion Section */
.page-register__conclusion-section {
  padding: 80px 0;
  background-color: var(--deep-green);
  text-align: center;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  .page-register__container {
    padding: 0 15px;
  }

  .page-register__section-title {
    font-size: 2em;
  }

  .page-register__sub-title {
    font-size: 1.5em;
  }

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

  .page-register__main-title {
    font-size: clamp(2em, 8vw, 2.8em);
  }

  .page-register__hero-description {
    font-size: 1em;
  }

  .page-register__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-register__btn-primary,
  .page-register__btn-secondary,
  .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__features-grid,
  .page-register__steps-grid,
  .page-register__promo-cards-grid,
  .page-register__games-grid {
    grid-template-columns: 1fr;
  }

  .page-register__feature-card,
  .page-register__step-card,
  .page-register__promo-card,
  .page-register__game-card {
    padding: 20px;
  }

  .page-register__security-content,
  .page-register__support-contact {
    flex-direction: column;
  }

  .page-register__security-image,
  .page-register__support-image {
    width: 100%;
    height: 250px;
    min-width: unset;
  }

  .page-register__security-text,
  .page-register__contact-info {
    width: 100%;
    min-width: unset;
  }

  .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-section,
  .page-register__intro-section,
  .page-register__steps-section,
  .page-register__promotions-section,
  .page-register__security-section,
  .page-register__games-section,
  .page-register__support-section,
  .page-register__faq-section,
  .page-register__conclusion-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Override padding for hero section to avoid double padding with container */
  .page-register__hero-section {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }
  .page-register__hero-content {
    padding-left: 15px !important;
    padding-right: 15px !important;
  }

  .page-register__video-section {
    padding-top: 10px !important; /* body đã đảm nhiệm --header-offset */
  }
}

@media (max-width: 480px) {
  .page-register__section-title {
    font-size: 1.8em;
  }
  .page-register__hero-description {
    font-size: 0.9em;
  }
  .page-register__faq-question {
    font-size: 1em;
    padding: 15px 20px;
  }
  .page-register__faq-answer {
    padding: 15px 20px;
  }
}