/* style/bnc.css */
/* body đã padding-top: var(--header-offset)；trang này không được viết lại biến đó */

:root {
  --page-bnc-primary-color: #11A84E;
  --page-bnc-secondary-color: #22C768;
  --page-bnc-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --page-bnc-card-bg: #11271B;
  --page-bnc-background: #08160F;
  --page-bnc-text-main: #F2FFF6;
  --page-bnc-text-secondary: #A7D9B8;
  --page-bnc-border-color: #2E7A4E;
  --page-bnc-glow-color: #57E38D;
  --page-bnc-gold-color: #F2C14E;
  --page-bnc-divider-color: #1E3A2A;
  --page-bnc-deep-green: #0A4B2C;
}

.page-bnc {
  font-family: Arial, sans-serif;
  color: var(--page-bnc-text-main); /* Màu chữ mặc định cho trang */
  background-color: var(--page-bnc-background);
}

.page-bnc__section {
  padding: 60px 20px;
  max-width: 1200px;
  margin: 0 auto;
  box-sizing: border-box;
}

.page-bnc__section-title {
  font-size: clamp(2em, 4vw, 2.8em);
  color: var(--page-bnc-gold-color);
  text-align: center;
  margin-bottom: 20px;
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: 0.05em;
}

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

/* Hero Section */
.page-bnc__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 20px 60px 20px; /* Padding trên nhỏ, dựa vào body cho offset header */
  overflow: hidden;
  background: var(--page-bnc-background);
}

.page-bnc__hero-image-wrapper {
  width: 100%;
  max-width: 1920px;
  margin-bottom: 30px;
}

.page-bnc__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 0 30px rgba(87, 227, 141, 0.4);
}

.page-bnc__hero-content {
  text-align: center;
  z-index: 1;
  max-width: 900px;
  color: var(--page-bnc-text-main);
}

.page-bnc__main-title {
  font-size: clamp(2.5em, 5vw, 3.5em); /* H1 với clamp cho responsive */
  color: var(--page-bnc-gold-color);
  margin-bottom: 15px;
  font-weight: bold;
  line-height: 1.1;
  letter-spacing: 0.03em;
}

.page-bnc__hero-description {
  font-size: 1.2em;
  color: var(--page-bnc-text-secondary);
  margin-bottom: 30px;
  line-height: 1.6;
}

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

.page-bnc__btn-primary,
.page-bnc__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-bnc__btn-primary {
  background: var(--page-bnc-button-gradient);
  color: var(--page-bnc-text-main);
  border: 2px solid var(--page-bnc-secondary-color);
}

.page-bnc__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(42, 209, 111, 0.4);
}

.page-bnc__btn-secondary {
  background: var(--page-bnc-card-bg);
  color: var(--page-bnc-primary-color);
  border: 2px solid var(--page-bnc-primary-color);
}

.page-bnc__btn-secondary:hover {
  background: var(--page-bnc-primary-color);
  color: var(--page-bnc-text-main);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(17, 168, 78, 0.4);
}

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

/* About Game Section */
.page-bnc__about-game {
  background-color: var(--page-bnc-deep-green);
  border-radius: 15px;
  margin-top: 40px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.page-bnc__content-grid {
  display: flex;
  gap: 40px;
  align-items: center;
}

.page-bnc__content-grid .page-bnc__text-block {
  flex: 1;
  color: var(--page-bnc-text-main);
  line-height: 1.7;
}

.page-bnc__content-grid .page-bnc__text-block p {
  margin-bottom: 15px;
}

.page-bnc__content-grid .page-bnc__text-block strong {
  color: var(--page-bnc-gold-color);
}

.page-bnc__image-block {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-bnc__image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0,0,0,0.2);
}

/* Features Section */
.page-bnc__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-bnc__feature-card {
  background: var(--page-bnc-card-bg);
  border: 1px solid var(--page-bnc-border-color);
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--page-bnc-text-main);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-bnc__feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(87, 227, 141, 0.3);
}

.page-bnc__feature-card .page-bnc__card-title {
  font-size: 1.4em;
  color: var(--page-bnc-gold-color);
  margin-bottom: 15px;
  font-weight: bold;
}

.page-bnc__feature-card p {
  font-size: 1em;
  color: var(--page-bnc-text-secondary);
  line-height: 1.6;
  flex-grow: 1;
}

.page-bnc__feature-card .page-bnc__card-image {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 8px;
  margin-top: 20px;
}

/* How To Play Section */
.page-bnc__how-to-play {
  background-color: var(--page-bnc-card-bg);
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.page-bnc__steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.page-bnc__step-card {
  background: var(--page-bnc-background);
  border: 1px solid var(--page-bnc-border-color);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  color: var(--page-bnc-text-main);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-bnc__step-card .page-bnc__card-title {
  font-size: 1.5em;
  color: var(--page-bnc-primary-color);
  margin-bottom: 15px;
  font-weight: bold;
}

.page-bnc__step-card p {
  font-size: 1em;
  color: var(--page-bnc-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* Promotions Section */
.page-bnc__promos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-bnc__promo-card {
  background: var(--page-bnc-card-bg);
  border: 1px solid var(--page-bnc-border-color);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  color: var(--page-bnc-text-main);
  display: flex;
  flex-direction: column;
}

.page-bnc__promo-card .page-bnc__card-image {
  width: 100%;
  height: 200px; /* Chiều cao cố định để nhất quán */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 15px;
}

.page-bnc__promo-card .page-bnc__card-title {
  font-size: 1.3em;
  color: var(--page-bnc-gold-color);
  margin-bottom: 10px;
  font-weight: bold;
}

.page-bnc__promo-card p {
  font-size: 0.95em;
  color: var(--page-bnc-text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-bnc__promo-card .page-bnc__btn-secondary {
  align-self: flex-start;
  padding: 10px 20px;
  font-size: 0.9em;
}

.page-bnc__all-promotions-cta {
  text-align: center;
}

/* FAQ Section */
.page-bnc__faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.page-bnc__faq-item {
  background: var(--page-bnc-card-bg);
  border: 1px solid var(--page-bnc-border-color);
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
  color: var(--page-bnc-text-main);
}

.page-bnc__faq-item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.15em;
  font-weight: bold;
  color: var(--page-bnc-gold-color);
  background: var(--page-bnc-deep-green);
}

.page-bnc__faq-item summary::-webkit-details-marker,
.page-bnc__faq-item summary::marker {
  display: none;
}

.page-bnc__faq-qtext {
  flex-grow: 1;
  pointer-events: none; /* Ngăn chọn văn bản làm gián đoạn việc nhấp */
}

.page-bnc__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: var(--page-bnc-primary-color);
  pointer-events: none; /* Ngăn biểu tượng bật tắt làm gián đoạn việc nhấp */
}

.page-bnc__faq-answer {
  padding: 15px 25px 20px;
  font-size: 1em;
  line-height: 1.6;
  color: var(--page-bnc-text-secondary);
  border-top: 1px solid var(--page-bnc-border-color);
}

.page-bnc__faq-answer p {
  margin-bottom: 0;
}

/* Bottom CTA Section */
.page-bnc__cta-bottom {
  background: var(--page-bnc-deep-green);
  text-align: center;
  border-radius: 15px;
  margin-top: 40px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

/* Global image responsive styles */
.page-bnc img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

  .page-bnc__section {
    padding: 40px 15px;
  }

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

  .page-bnc__hero-content {
    padding: 0 15px;
  }

  .page-bnc__main-title {
    font-size: clamp(2em, 8vw, 2.5em);
  }

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

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

  .page-bnc__btn-primary,
  .page-bnc__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 20px !important;
    font-size: 1em !important;
  }

  .page-bnc__content-grid {
    flex-direction: column;
    gap: 30px;
  }

  .page-bnc__image-block {
    order: -1; /* Hình ảnh trên văn bản trên di động */
  }

  .page-bnc__features-grid,
  .page-bnc__steps-grid,
  .page-bnc__promos-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-bnc__feature-card,
  .page-bnc__step-card,
  .page-bnc__promo-card {
    padding: 20px;
  }

  .page-bnc__card-image {
    width: 100% !important;
    height: auto !important;
    max-width: 100% !important;
  }

  .page-bnc img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-bnc__faq-item summary {
    padding: 15px 20px;
    font-size: 1em;
  }

  .page-bnc__faq-answer {
    padding: 10px 20px 15px;
  }

  .page-bnc__promo-card .page-bnc__card-image {
    height: 180px; /* Điều chỉnh chiều cao cho di động */
  }
}