.page-about {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main-color); /* Sử dụng màu chữ chính */
  background-color: var(--background-color); /* Sử dụng màu nền chính */
}

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

.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 20px 60px; /* body đã có padding-top */
  text-align: center;
  overflow: hidden;
  color: var(--text-main-color);
  background-color: var(--deep-green-color);
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-height: 675px; /* Giới hạn chiều cao của ảnh */
  overflow: hidden;
  position: relative;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: brightness(0.7); /* Làm tối ảnh để chữ dễ đọc hơn */
}

.page-about__hero-content {
  position: relative;
  z-index: 10;
  max-width: 800px;
  margin-top: 40px;
}

.page-about__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: bold;
  margin-bottom: 20px;
  color: var(--text-main-color);
  line-height: 1.2;
}

.page-about__hero-description {
  font-size: 1.1rem;
  margin-bottom: 30px;
  color: var(--text-secondary-color);
}

.page-about__btn-primary {
  display: inline-block;
  background: var(--button-gradient);
  color: #ffffff;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

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

.page-about__btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--primary-color);
  padding: 12px 28px;
  border: 2px solid var(--primary-color);
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease;
  cursor: pointer;
}

.page-about__btn-secondary:hover {
  background-color: var(--primary-color);
  color: #ffffff;
}

.page-about__section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
  color: var(--text-main-color);
}

.page-about__text-block {
  font-size: 1rem;
  margin-bottom: 20px;
  text-align: center;
  color: var(--text-secondary-color);
}

.page-about__card {
  background-color: var(--card-bg-color);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  gap: 15px;
  color: var(--text-main-color);
}

.page-about__card-title {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text-main-color);
  margin-bottom: 10px;
}

.page-about__card p {
  color: var(--text-secondary-color);
}

.page-about__grid-two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 60px;
}

.page-about__grid-three-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

.page-about__feature-card {
  text-align: center;
  background-color: var(--card-bg-color);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-about__feature-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  object-fit: contain;
}

.page-about__game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__game-card {
  background-color: var(--card-bg-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.page-about__game-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}

.page-about__game-card .page-about__card-title {
  margin-top: 20px;
  margin-bottom: 10px;
  font-size: 1.4rem;
}

.page-about__game-card .page-about__card-title a {
  color: var(--text-main-color);
  text-decoration: none;
}

.page-about__game-card .page-about__card-title a:hover {
  color: var(--primary-color);
}

.page-about__game-card p {
  padding: 0 20px 20px;
  color: var(--text-secondary-color);
}

.page-about__responsible-list {
  list-style: none;
  padding: 0;
  margin: 30px auto 40px;
  max-width: 800px;
  color: var(--text-secondary-color);
}

.page-about__responsible-list li {
  background-color: var(--card-bg-color);
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 15px;
  display: flex;
  align-items: flex-start;
  gap: 15px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.page-about__responsible-list li::before {
  content: '✓';
  color: var(--primary-color);
  font-weight: bold;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.page-about__responsible-list li p {
  margin: 0;
  text-align: left;
  color: var(--text-secondary-color);
}

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

.page-about__contact-card {
  text-align: center;
  background-color: var(--card-bg-color);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-about__contact-card .page-about__card-title {
  font-size: 1.4rem;
  margin-bottom: 15px;
}

.page-about__contact-card p {
  margin-bottom: 25px;
}

.page-about__faq-section {
  padding: 60px 20px;
  background-color: var(--deep-green-color);
  color: var(--text-main-color);
}

.page-about__faq-list {
  max-width: 900px;
  margin: 40px auto 0;
}

.page-about__faq-item {
  background-color: var(--card-bg-color);
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-about__faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-weight: bold;
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--text-main-color);
  background-color: var(--card-bg-color);
  list-style: none;
}

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

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

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

.page-about__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  margin-left: 15px;
  color: var(--primary-color);
}

.page-about__faq-answer {
  padding: 15px 25px 25px;
  font-size: 0.95rem;
  color: var(--text-secondary-color);
  border-top: 1px solid var(--divider-color);
}

.page-about__faq-answer p {
  margin: 0;
  color: var(--text-secondary-color);
}

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

/* Global styles for dark background, overridden by specific sections */
.page-about {
  color: var(--text-main-color);
  background-color: var(--background-color);
}

.page-about__light-bg {
  background-color: var(--background-color);
  color: var(--text-main-color);
}

.page-about__dark-section {
  background-color: var(--deep-green-color);
  color: var(--text-main-color);
}

.page-about__card-bg {
  background-color: var(--card-bg-color);
}

/* Responsive styles */
@media (max-width: 1024px) {
  .page-about__grid-two-columns {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .page-about__container {
    padding: 15px;
  }

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

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

  .page-about__hero-description {
    font-size: 1rem;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
  }

  .page-about__hero-content .page-about__btn-primary {
    margin-bottom: 15px;
  }

  .page-about__section-title {
    font-size: clamp(1.5rem, 6vw, 2.2rem);
  }

  .page-about__grid-three-columns,
  .page-about__game-grid,
  .page-about__contact-methods {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

  .page-about__game-image {
    height: 200px;
  }

  .page-about__responsible-list li {
    padding: 15px;
  }

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

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

  /* Image responsive rules */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__hero-section,
  .page-about__vision-mission,
  .page-about__why-choose-us,
  .page-about__game-offerings,
  .page-about__responsible-gaming,
  .page-about__contact-support,
  .page-about__faq-section,
  .page-about__hero-image-wrapper,
  .page-about__game-card,
  .page-about__feature-card,
  .page-about__contact-card,
  .page-about__cta-buttons,
  .page-about__button-group,
  .page-about__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important; /* Ensure no overflow */
  }

  .page-about__hero-section {
    padding-top: 10px !important; /* body đã承担 --header-offset，此处禁止 var(--header-offset) */
  }

  /* Ensure multiple buttons wrap on mobile */
  .page-about__hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
  }
}

/* Additional rules for video/button containers on mobile */
.page-about__cta-buttons,
.page-about__button-group,
.page-about__btn-container {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

@media (max-width: 768px) {
  .page-about__cta-buttons,
  .page-about__button-group,
  .page-about__btn-container {
    flex-wrap: wrap !important;
    gap: 10px;
    padding-left: 15px;
    padding-right: 15px;
  }
}

/* Ensure text links within content are visible */
.page-about p a,
.page-about li a,
.page-about__game-card .page-about__card-title a {
  color: var(--primary-color);
  text-decoration: underline;
}

.page-about p a:hover,
.page-about li a:hover,
.page-about__game-card .page-about__card-title a:hover {
  color: var(--secondary-color);
}