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

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

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
  padding-top: 10px; /* Chỉ dùng padding nhỏ, không dùng var(--header-offset) */
  background: var(--deep-green);
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 10px;
}

.page-about__hero-content {
  text-align: center;
  max-width: 900px;
  margin-top: 40px;
  color: var(--text-main);
  z-index: 1;
}

.page-about__main-title {
  font-weight: bold;
  line-height: 1.2;
  letter-spacing: 0.05em;
  color: var(--gold);
  margin-bottom: 20px;
}

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

.page-about__btn-primary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 50px;
  background: var(--button-gradient);
  color: #ffffff;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  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;
}

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

.page-about__section {
  padding: 80px 20px;
  text-align: center;
}

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

.page-about__light-bg {
  background-color: var(--deep-green); /* Sử dụng màu nền tối hơn để tạo độ tương phản */
  color: var(--text-main);
}

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.page-about__heading {
  font-size: 2.5em;
  color: var(--gold);
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 15px;
}

.page-about__heading::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--glow);
  border-radius: 2px;
}

.page-about__paragraph {
  font-size: 1.05em;
  margin-bottom: 20px;
  line-height: 1.7;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-secondary);
}

.page-about__image {
  margin-top: 40px;
  border-radius: 10px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-about__image--centered {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__value-list,
.page-about__game-list,
.page-about__why-list {
  list-style: none;
  padding: 0;
  margin: 40px 0;
  display: grid;
  gap: 30px;
}

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

.page-about__value-item,
.page-about__game-item,
.page-about__why-item {
  background-color: var(--card-b-g);
  padding: 30px;
  border-radius: 15px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__value-item:hover,
.page-about__game-item:hover,
.page-about__why-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.page-about__value-title,
.page-about__game-title,
.page-about__why-title {
  font-size: 1.5em;
  color: var(--gold);
  margin-bottom: 15px;
  font-weight: bold;
}

.page-about__game-list {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

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

.page-about__btn-primary--large {
  padding: 18px 35px;
  font-size: 1.2em;
}

.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 50px;
  background: transparent;
  color: var(--glow);
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  border: 2px solid var(--glow);
  cursor: pointer;
}

.page-about__btn-secondary:hover {
  background-color: var(--glow);
  color: var(--deep-green);
  border-color: var(--glow);
}

.page-about__btn-secondary--large {
  padding: 18px 35px;
  font-size: 1.2em;
}

.page-about__faq-list {
  margin-top: 40px;
  text-align: left;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__faq-item {
  background-color: var(--card-b-g);
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid var(--divider);
  overflow: hidden;
}

.page-about__faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: bold;
  color: var(--text-main);
  font-size: 1.1em;
  transition: background-color 0.3s ease;
}

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

.page-about__faq-item summary:hover {
  background-color: var(--deep-green);
}

.page-about__faq-qtext {
  flex-grow: 1;
  color: var(--text-main);
}

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  color: var(--glow);
  margin-left: 15px;
  transition: transform 0.3s ease;
}

.page-about__faq-item[open] .page-about__faq-toggle {
  transform: rotate(45deg);
}

.page-about__faq-answer {
  padding: 10px 25px 20px;
  background-color: rgba(17, 39, 27, 0.7);
  color: var(--text-secondary);
  font-size: 1em;
  line-height: 1.7;
  border-top: 1px solid var(--divider);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-about__heading {
    font-size: 2em;
  }
  .page-about__paragraph {
    font-size: 1em;
  }
  .page-about__hero-content {
    margin-top: 20px;
  }
  .page-about__main-title {
    font-size: 2.5em;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    padding: 40px 15px;
    padding-top: 10px !important;
  }
  .page-about__hero-image-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-about__hero-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-about__main-title {
    font-size: 2em;
  }
  .page-about__intro-text {
    font-size: 0.95em;
  }
  .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: 15px 20px !important;
    font-size: 1em !important;
  }
  .page-about__cta-wrapper {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__section {
    padding: 50px 15px;
  }
  .page-about__heading {
    font-size: 1.8em;
  }
  .page-about__paragraph {
    font-size: 0.95em;
  }
  .page-about__image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-about__value-list,
  .page-about__game-list,
  .page-about__why-list {
    grid-template-columns: 1fr;
    margin: 20px 0;
  }
  .page-about__value-item,
  .page-about__game-item,
  .page-about__why-item {
    padding: 20px;
  }
  .page-about__value-title,
  .page-about__game-title,
  .page-about__why-title {
    font-size: 1.3em;
  }
  .page-about__faq-item summary {
    padding: 15px 20px;
    font-size: 1em;
  }
  .page-about__faq-answer {
    padding: 10px 20px 15px;
  }
  .page-about__container {
    padding: 0;
  }
  .page-about__section--mission,
  .page-about__section--history,
  .page-about__section--values,
  .page-about__section--ecosystem,
  .page-about__section--support,
  .page-about__section--responsible-gaming,
  .page-about__section--why-choose,
  .page-about__section--faq {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}