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

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 10px; /* Nhỏ hơn so với --header-offset */
  color: var(--text-main-color);
  text-align: center;
  overflow: hidden;
  min-height: 500px;
}

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

.page-about__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.5); /* Làm tối ảnh nền để chữ dễ đọc */
}

.page-about__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: 40px 20px;
  background: rgba(0, 0, 0, 0.4); /* Nền tối để chữ nổi bật */
  border-radius: 10px;
  margin-top: 80px;
  margin-bottom: 80px;
}

.page-about__main-title {
  font-size: clamp(2em, 4vw, 3.5em);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main-color);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.page-about__subtitle {
  font-size: clamp(1em, 1.8vw, 1.3em);
  color: var(--text-secondary-color);
  margin-bottom: 30px;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s ease, transform 0.3s ease;
  margin: 10px;
  box-sizing: border-box;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: var(--text-main-color);
  border: none;
}

.page-about__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-about__btn-secondary {
  background: var(--card-bg-color);
  color: var(--main-color);
  border: 2px solid var(--border-color);
}

.page-about__btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  background: var(--deep-green-color);
  color: var(--text-main-color);
}

.page-about__btn-large {
  padding: 18px 35px;
  font-size: 1.1em;
}

.page-about__section {
  padding: 60px 20px;
  text-align: center;
}

.page-about__section--introduction {
  background-color: var(--background-color);
}

.page-about__section--our-story,
.page-about__section--values,
.page-about__section--community,
.page-about__section--future-vision {
  background-color: var(--card-bg-color);
}

.page-about__section--why-choose,
.page-about__section--responsible-gaming,
.page-about__section--faq,
.page-about__section--cta {
  background-color: var(--background-color);
}

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

.page-about__heading {
  font-size: clamp(1.8em, 3vw, 2.5em);
  color: var(--main-color);
  margin-bottom: 40px;
  font-weight: 700;
}

.page-about__sub-heading {
  font-size: clamp(1.3em, 2.2vw, 1.8em);
  color: var(--text-main-color);
  margin-top: 30px;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-about__text-block {
  font-size: 1.1em;
  color: var(--text-secondary-color);
  margin-bottom: 20px;
  text-align: justify;
}

.page-about__text-link {
  color: var(--main-color);
  text-decoration: none;
  font-weight: 600;
}

.page-about__text-link:hover {
  text-decoration: underline;
}

.page-about__image-content-flex {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 40px;
  text-align: left;
}

.page-about__image-content-flex--reverse {
  flex-direction: row-reverse;
}

.page-about__image-wrapper {
  flex: 1;
  min-width: 300px;
}

.page-about__image {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  min-width: 200px;
  min-height: 200px;
}

.page-about__text-block-wrapper {
  flex: 1;
}

.page-about__list {
  list-style: none;
  padding: 0;
  margin: 20px 0;
  text-align: left;
}

.page-about__list-item {
  font-size: 1.05em;
  color: var(--text-secondary-color);
  margin-bottom: 10px;
  position: relative;
  padding-left: 25px;
}

.page-about__list-item::before {
  content: '✔️';
  position: absolute;
  left: 0;
  color: var(--glow-color);
}

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

.page-about__card {
  background-color: var(--card-bg-color);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  color: var(--text-secondary-color);
  height: 100%;
}

.page-about__card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  min-width: 200px;
  min-height: 200px;
}

.page-about__card-title {
  font-size: 1.3em;
  color: var(--text-main-color);
  margin-bottom: 10px;
  font-weight: 600;
}

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

.page-about__card-link {
  color: var(--main-color);
  text-decoration: none;
  font-weight: 600;
}

.page-about__card-link:hover {
  text-decoration: underline;
}

.page-about__value-list {
  list-style: none;
  padding: 0;
  margin: 40px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  text-align: left;
}

.page-about__value-item {
  flex: 1;
  min-width: 300px;
  background-color: var(--card-bg-color);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  color: var(--text-secondary-color);
}

.page-about__faq-list {
  margin-top: 40px;
  text-align: left;
}

.page-about__faq-item {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: var(--text-secondary-color);
}

.page-about__faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1.1em;
  color: var(--text-main-color);
}

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

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

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

.page-about__faq-answer {
  padding: 0 25px 20px;
  font-size: 1em;
  color: var(--text-secondary-color);
}

.page-about__floating-button {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
}

.page-about__floating-btn-link {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: var(--text-main-color);
  padding: 15px 25px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: transform 0.3s ease;
}

.page-about__floating-btn-link:hover {
  transform: translateY(-5px);
}

.page-about__floating-btn-icon {
  font-size: 1.2em;
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .page-about__hero-content {
    padding: 30px 15px;
    margin-top: 60px;
    margin-bottom: 60px;
  }
  
  .page-about__image-content-flex {
    flex-direction: column;
    text-align: center;
  }

  .page-about__image-content-flex--reverse {
    flex-direction: column;
  }

  .page-about__text-block-wrapper {
    text-align: center;
  }

  .page-about__list,
  .page-about__value-list {
    text-align: center;
  }

  .page-about__list-item,
  .page-about__value-item {
    padding-left: 0;
  }

  .page-about__list-item::before {
    position: static;
    margin-right: 5px;
  }

  .page-about__value-list {
    flex-direction: column;
    align-items: center;
  }

  .page-about__value-item {
    width: 100%;
    max-width: 500px;
  }

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

  .page-about__floating-button {
    bottom: 15px;
    right: 15px;
  }
}

@media (max-width: 768px) {
  .page-about__hero-content {
    padding: 20px 10px;
    margin-top: 40px;
    margin-bottom: 40px;
  }

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

  .page-about__subtitle {
    font-size: clamp(0.9em, 3.5vw, 1.2em);
  }

  .page-about__heading {
    font-size: clamp(1.5em, 6vw, 2.2em);
  }

  .page-about__sub-heading {
    font-size: clamp(1.1em, 4.5vw, 1.6em);
  }

  .page-about__text-block,
  .page-about__list-item,
  .page-about__card-text {
    font-size: 1em;
    text-align: left;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about a[class*="button"],
  .page-about 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;
    margin: 5px 0 !important; /* Adjust margin for stacked buttons */
  }

  .page-about__hero-content .page-about__btn-primary,
  .page-about__hero-content .page-about__btn-secondary,
  .page-about__section--cta .page-about__btn-primary,
  .page-about__section--cta .page-about__btn-secondary {
    display: block;
  }

  .page-about__floating-btn-link {
    padding: 12px 20px;
    font-size: 0.9em;
  }

  .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__image-wrapper,
  .page-about__text-block-wrapper,
  .page-about__hero-section,
  .page-about__hero-image-wrapper,
  .page-about__hero-content {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow-x: hidden !important;
  }

  .page-about__hero-section {
    padding-top: 10px !important;
  }

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

  .page-about__faq-answer {
    padding: 0 20px 15px;
  }

  .page-about__card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .page-about__hero-content {
    margin-top: 20px;
    margin-bottom: 20px;
  }

  .page-about__main-title {
    font-size: clamp(1.5em, 8vw, 2em);
  }

  .page-about__subtitle {
    font-size: clamp(0.8em, 4vw, 1em);
  }

  .page-about__heading {
    font-size: clamp(1.3em, 7vw, 1.8em);
  }

  .page-about__sub-heading {
    font-size: clamp(1em, 5vw, 1.3em);
  }

  .page-about__section {
    padding: 40px 10px;
  }

  .page-about__container {
    padding: 0 10px;
  }

  .page-about__floating-btn-link {
    padding: 10px 15px;
    font-size: 0.8em;
  }
}