:root {
  --primary-color: #C91F17;
  --secondary-color: #E53935;
  --button-gradient: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
  --card-bg: #D32F2F;
  --background-color-section: #B71C1C; /* Dùng cho các section, khác với body */
  --text-main-color: #FFF5E1;
  --border-color: #F2B544;
  --glow-color: #FFCC66;
  --gold-color: #F4D34D;
  --deep-red-color: #7A0E0E;
}

.page-register {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main-color); /* Áp dụng màu chữ chính cho toàn bộ trang */
  background-color: var(--background-color-section); /* Màu nền cho các section, giả định body là màu tối hơn từ shared.css */
}

.page-register__hero-section {
  position: relative;
  width: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 10px; /* Chỉ 10px top padding, body đã có header-offset */
  padding-bottom: 40px;
  box-sizing: border-box;
  background-color: var(--deep-red-color);
}

.page-register__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: brightness(0.7);
}

.page-register__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: 20px;
  margin-top: -150px; /* Đẩy nội dung lên trên ảnh một chút nhưng không che phủ */
  background: rgba(0, 0, 0, 0.4);
  border-radius: 10px;
}

.page-register__main-title {
  font-size: clamp(2em, 4vw, 3.2em);
  color: var(--gold-color);
  margin-bottom: 15px;
  font-weight: bold;
  line-height: 1.2;
}

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

.page-register__btn-primary {
  display: inline-block;
  background: var(--button-gradient);
  color: #000000; /* Màu chữ đen để tương phản với nền vàng */
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-register__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  opacity: 0.9;
}

.page-register__btn-secondary {
  display: inline-block;
  background: var(--card-bg);
  color: var(--text-main-color);
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  border: 2px solid var(--border-color);
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  margin-left: 15px;
}

.page-register__btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  opacity: 0.9;
}

.page-register__section {
  padding: 60px 0;
  text-align: center;
  background-color: var(--background-color-section);
}

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

.page-register__section-title {
  font-size: 2.5em;
  color: var(--gold-color);
  margin-bottom: 20px;
  font-weight: bold;
}

.page-register__section-description {
  font-size: 1.1em;
  color: var(--text-main-color);
  max-width: 800px;
  margin: 0 auto 40px auto;
}

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

.page-register__card {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--text-main-color);
  border: 1px solid var(--deep-red-color);
}

.page-register__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.page-register__feature-icon,
.page-register__verification-image,
.page-register__payment-image {
  width: 100%;
  max-width: 300px;
  height: auto;
  margin-bottom: 20px;
  border-radius: 8px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  object-fit: cover;
}

.page-register__feature-title,
.page-register__step-title,
.page-register__promo-title,
.page-register__sub-title,
.page-register__support-title {
  font-size: 1.6em;
  color: var(--gold-color);
  margin-bottom: 15px;
}

.page-register__feature-text,
.page-register__step-text,
.page-register__promo-text,
.page-register__support-text {
  font-size: 1em;
  color: var(--text-main-color);
}

.page-register__step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--button-gradient);
  color: #000000;
  border-radius: 50%;
  font-size: 1.8em;
  font-weight: bold;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-register__cta-buttons {
  margin-top: 50px;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-register__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  text-align: left;
  margin-top: 40px;
}

.page-register__text-block {
  color: var(--text-main-color);
}

.page-register__text-block ul {
  list-style: none;
  padding: 0;
  margin-top: 20px;
}

.page-register__text-block li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 25px;
}

.page-register__text-block li::before {
  content: '✔';
  color: var(--gold-color);
  position: absolute;
  left: 0;
  top: 0;
}

.page-register__game-categories {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 40px;
}

.page-register__game-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  width: 180px;
  height: 180px;
  background-color: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--text-main-color);
  border: 1px solid var(--deep-red-color);
}

.page-register__game-card:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-register__game-icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 10px;
  border-radius: 8px;
}

.page-register__game-name {
  font-size: 1.1em;
  font-weight: bold;
  color: var(--text-main-color);
}

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

.page-register__support-item {
  text-align: center;
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  color: var(--text-main-color);
  border: 1px solid var(--deep-red-color);
}

.page-register__faq-section {
  text-align: left;
}

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

.page-register__faq-item {
  margin-bottom: 20px;
  border: 1px solid var(--deep-red-color);
  background-color: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  padding: 0 20px;
  color: var(--text-main-color);
}

.page-register__faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  cursor: pointer;
  font-size: 1.2em;
  font-weight: bold;
  color: var(--gold-color);
  list-style: none; /* Hide default marker */
}

.page-register__faq-item summary::-webkit-details-marker {
  display: none; /* Hide default marker for webkit browsers */
}

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

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

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

.page-register__faq-answer {
  padding: 0 0 20px 0;
  font-size: 1em;
  color: var(--text-main-color);
}

.page-register__faq-answer p {
  margin: 0;
}

.page-register__final-cta {
  padding-bottom: 80px;
  background-color: var(--deep-red-color);
}

.page-register__final-button {
  margin-top: 30px;
}

/* ==================== Responsive Styles ==================== */

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

  /* HERO 主图区域 */
  .page-register__hero-section {
    padding-top: 10px !important;
    padding-bottom: 30px;
  }

  .page-register__hero-content {
    margin-top: -80px;
    padding: 15px;
  }

  .page-register__main-title {
    font-size: clamp(1.8em, 7vw, 2.5em);
  }

  .page-register__hero-description {
    font-size: 1em;
    margin-bottom: 20px;
  }

  /* 按钮与按钮容器 */
  .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: 12px 15px !important;
    font-size: 1em !important;
    margin-left: 0 !important; /* Reset margin for single column */
  }

  .page-register__cta-buttons {
    flex-direction: column !important;
    gap: 15px !important;
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  /* 通用图片与容器 */
  .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 {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
  }

  .page-register__section-title {
    font-size: 1.8em;
  }

  .page-register__section-description {
    font-size: 0.95em;
  }

  /* 产品展示图区域 (Game Categories) */
  .page-register__game-categories {
    flex-direction: column;
    align-items: center;
  }

  .page-register__game-card {
    width: 100%;
    max-width: 250px;
    height: auto;
    padding: 20px;
  }

  .page-register__game-icon {
    width: 80px;
    height: 80px;
  }

  .page-register__game-name {
    font-size: 1em;
  }

  .page-register__content-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .page-register__text-block {
    order: 2; /* Text after image on mobile */
  }

  .page-register__image-block {
    order: 1;
  }

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

  /* Other content modules (FAQ) */
  .page-register__faq-item {
    padding: 0 10px;
  }

  .page-register__faq-item summary {
    font-size: 1.1em;
    padding: 15px 0;
  }

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

/* Tablet specific styles (max-width: 1024px) */
@media (max-width: 1024px) {
  .page-register__container {
    padding: 0 30px;
  }

  .page-register__hero-content {
    margin-top: -100px;
  }

  .page-register__main-title {
    font-size: clamp(2.2em, 5vw, 2.8em);
  }

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

  .page-register__content-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .page-register__text-block {
    order: 2;
  }

  .page-register__image-block {
    order: 1;
  }

  .page-register__features-grid,
  .page-register__steps-list,
  .page-register__promotions-grid,
  .page-register__support-channels {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  }

  .page-register__game-categories {
    gap: 15px;
  }

  .page-register__game-card {
    width: 160px;
    height: 160px;
  }

  .page-register__game-icon {
    width: 80px;
    height: 80px;
  }
}