:root {
    --primary-color: #0A2463;
    --secondary-color: #FFD700;
    --text-color-dark: #333333;
    --text-color-light: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #0A2463;
    --border-color: #e0e0e0;
}

.page-about-us {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color-dark);
    background-color: var(--bg-light);
    padding-top: var(--header-offset, 120px);
}

.page-about-us__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.page-about-us__section {
    padding: 60px 0;
    text-align: center;
}

.page-about-us__section-title {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 20px;
    font-weight: bold;
}

.page-about-us__section-description {
    font-size: 18px;
    color: #666;
    max-width: 800px;
    margin: 0 auto 40px auto;
}

/* Hero Section */
.page-about-us__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-bottom: 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #000000 100%);
    color: var(--text-color-light);
}

.page-about-us__hero-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.page-about-us__hero-image {
    width: 100%;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    overflow: hidden;
}

.page-about-us__hero-image img {
    width: 100%;
    height: auto;
    max-width: 100%;
    display: block;
    object-fit: cover;
}

.page-about-us__hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    width: 100%;
    padding: 0 20px;
}

.page-about-us__main-title {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--secondary-color);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.page-about-us__intro-text {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 30px auto;
    color: #f0f0f0;
}

.page-about-us__cta-button {
    display: inline-block;
    padding: 15px 40px;
    background: var(--secondary-color);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 8px;
    font-size: 20px;
    font-weight: bold;
    margin-top: 30px;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.page-about-us__cta-button:hover {
    background: #FFEB80;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Dark background sections */
.page-about-us__dark-bg {
    background-color: var(--bg-dark);
    color: var(--text-color-light);
}
.page-about-us__dark-bg .page-about-us__section-title {
    color: var(--secondary-color);
}
.page-about-us__dark-bg .page-about-us__section-description {
    color: #c0c0c0;
}

/* Light background sections */
.page-about-us__light-bg {
    background-color: var(--bg-light);
    color: var(--text-color-dark);
}
.page-about-us__light-bg .page-about-us__section-title {
    color: var(--primary-color);
}
.page-about-us__light-bg .page-about-us__section-description {
    color: #666;
}

/* Vision and Mission */
.page-about-us__vision-mission {
    padding-top: 80px;
    padding-bottom: 80px;
}
.page-about-us__content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}
.page-about-us__card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 30px;
    text-align: left;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: var(--text-color-light);
}
.page-about-us__light-bg .page-about-us__card {
    background: #ffffff;
    color: var(--text-color-dark);
    border: 1px solid var(--border-color);
}
.page-about-us__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}
.page-about-us__card-title {
    font-size: 24px;
    color: var(--secondary-color);
    margin-bottom: 15px;
    font-weight: bold;
}
.page-about-us__light-bg .page-about-us__card-title {
    color: var(--primary-color);
}
.page-about-us__card p {
    font-size: 16px;
    line-height: 1.7;
}

/* History and Development */
.page-about-us__history {
    padding-top: 80px;
    padding-bottom: 80px;
}
.page-about-us__content-wrapper {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-top: 40px;
    text-align: left;
}
.page-about-us__content-wrapper--reverse {
    flex-direction: row-reverse;
}
.page-about-us__image-left, .page-about-us__image-right {
    flex: 1;
    max-width: 50%;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}
.page-about-us__text-content {
    flex: 1;
    font-size: 17px;
    line-height: 1.8;
}
.page-about-us__text-content p + p {
    margin-top: 15px;
}

/* Core Values */
.page-about-us__core-values {
    padding-top: 80px;
    padding-bottom: 80px;
}
.page-about-us__values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}
.page-about-us__value-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    color: var(--text-color-light);
}
.page-about-us__value-title {
    font-size: 22px;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: bold;
}
.page-about-us__image-center {
    display: block;
    margin: 60px auto 0 auto;
    max-width: 80%;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

/* Why Choose Us */
.page-about-us__why-choose-us {
    padding-top: 80px;
    padding-bottom: 80px;
}
.page-about-us__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
    text-align: left;
}
.page-about-us__feature-item {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}
.page-about-us__feature-title {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: bold;
}
.page-about-us__cta-area {
    margin-top: 60px;
    text-align: center;
    padding: 30px;
    background: var(--primary-color);
    color: var(--text-color-light);
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}
.page-about-us__cta-area p {
    font-size: 20px;
    margin-bottom: 25px;
}
.page-about-us__cta-button--secondary {
    background: var(--secondary-color);
    color: var(--primary-color);
}
.page-about-us__cta-button--secondary:hover {
    background: #FFEB80;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* Responsible Gambling */
.page-about-us__responsible-gambling {
    padding-top: 80px;
    padding-bottom: 80px;
    text-align: left;
}
.page-about-us__responsible-gambling .page-about-us__section-title {
    text-align: center;
    margin-bottom: 40px;
}
.page-about-us__responsible-gambling .page-about-us__content-wrapper {
    flex-direction: row-reverse;
}
.page-about-us__responsible-gambling .page-about-us__image-right {
    max-width: 45%;
    flex-shrink: 0;
}
.page-about-us__responsible-gambling .page-about-us__text-content {
    flex-grow: 1;
    max-width: 55%;
}


/* Our Team */
.page-about-us__team {
    padding-top: 80px;
    padding-bottom: 80px;
}
.page-about-us__team-image {
    display: block;
    margin: 40px auto;
    max-width: 90%;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}
.page-about-us__team-details {
    max-width: 900px;
    margin: 0 auto;
    font-size: 17px;
    line-height: 1.8;
    text-align: left;
}
.page-about-us__team-details p {
    margin-bottom: 15px;
}

/* Future of xo88 */
.page-about-us__future {
    padding-top: 80px;
    padding-bottom: 80px;
}
.page-about-us__future-list {
    list-style: none;
    padding: 0;
    margin-top: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
}
.page-about-us__future-list li {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px 20px;
    margin-bottom: 15px;
    border-left: 4px solid var(--secondary-color);
    border-radius: 5px;
    font-size: 18px;
    color: var(--text-color-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* FAQ Section */
.page-about-us__faq {
    padding-top: 80px;
    padding-bottom: 80px;
}
.page-about-us__faq-list {
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-align: left;
}

/* FAQ容器样式 */
.page-about-us__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* FAQ默认状态 - 答案隐藏 */
.page-about-us__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 20px;
  opacity: 0;
  background: #f9f9f9;
  color: var(--text-color-dark);
}

/* FAQ展开状态 - ⚠️ Sử dụng!important và đủ lớn max-height để đảm bảo có thể mở rộng */
.page-about-us__faq-item.active .page-about-us__faq-answer {
  max-height: 2000px !important;
  padding: 20px !important;
  opacity: 1;
  background: #f9f9f9;
  border-top: 1px solid var(--border-color);
  border-radius: 0 0 8px 8px;
}
.page-about-us__faq-item.active .page-about-us__faq-answer p:last-child {
    margin-bottom: 0;
}

/* Vấn đề kiểu dáng */
.page-about-us__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
  color: var(--primary-color);
}
.page-about-us__faq-item.active .page-about-us__faq-question {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    border-bottom-color: transparent;
}

.page-about-us__faq-question:hover {
  background: #f5f5f5;
  border-color: #d0d0d0;
}

.page-about-us__faq-question:active {
  background: #eeeeee;
}

/* Tiêu đề câu hỏi kiểu dáng */
.page-about-us__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none;
  color: var(--primary-color);
}

/* Chuyển đổi biểu tượng */
.page-about-us__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: var(--secondary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.page-about-us__faq-item.active .page-about-us__faq-toggle {
  color: var(--primary-color);
  transform: rotate(180deg);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .page-about-us__hero-section {
        padding-bottom: 40px;
    }
    .page-about-us__main-title {
        font-size: 40px;
    }
    .page-about-us__intro-text {
        font-size: 18px;
    }
    .page-about-us__section-title {
        font-size: 32px;
    }
    .page-about-us__content-wrapper,
    .page-about-us__content-wrapper--reverse {
        flex-direction: column;
        gap: 30px;
    }
    .page-about-us__image-left, .page-about-us__image-right {
        max-width: 100%;
    }
    .page-about-us__responsible-gambling .page-about-us__image-right {
        max-width: 100%;
    }
    .page-about-us__responsible-gambling .page-about-us__text-content {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .page-about-us {
        padding-top: var(--header-offset, 120px) !important;
    }

    .page-about-us__container {
        padding: 30px 15px;
    }

    .page-about-us__section {
        padding: 40px 0;
    }

    .page-about-us__hero-section {
        padding-bottom: 30px;
    }

    .page-about-us__main-title {
        font-size: 32px;
        margin-bottom: 15px;
    }

    .page-about-us__intro-text {
        font-size: 16px;
        margin-bottom: 20px;
    }

    .page-about-us__cta-button {
        padding: 12px 25px;
        font-size: 18px;
        margin-top: 20px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }

    .page-about-us__section-title {
        font-size: 28px;
        margin-bottom: 15px;
    }

    .page-about-us__section-description {
        font-size: 16px;
        margin-bottom: 30px;
    }

    .page-about-us__card,
    .page-about-us__value-item,
    .page-about-us__feature-item {
        padding: 25px;
    }

    .page-about-us__card-title,
    .page-about-us__value-title,
    .page-about-us__feature-title {
        font-size: 20px;
        margin-bottom: 10px;
    }

    .page-about-us__image-left img,
    .page-about-us__image-right img,
    .page-about-us__team-image img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        border-radius: 8px;
    }
    .page-about-us__hero-image,
    .page-about-us__content-wrapper,
    .page-about-us__team-image,
    .page-about-us__image-center,
    .page-about-us__responsible-gambling .page-about-us__content-wrapper {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        overflow: hidden;
    }
    .page-about-us__image-center {
        max-width: 100%;
    }

    .page-about-us__text-content {
        font-size: 15px;
    }

    .page-about-us__cta-area p {
        font-size: 18px;
        margin-bottom: 20px;
    }

    .page-about-us__future-list li {
        font-size: 16px;
        padding: 12px 15px;
    }
    
    .page-about-us__faq-question {
      padding: 15px;
    }
    
    .page-about-us__faq-question h3 {
      font-size: 16px;
    }
    
    .page-about-us__faq-toggle {
      font-size: 24px;
      width: 28px;
      height: 28px;
    }
    
    .page-about-us__faq-item.active .page-about-us__faq-answer {
      padding: 15px !important;
    }
}