/* style/about.css */
/* body đã có padding-top: var(--header-offset); trang này không cần thêm */

:root {
  --page-about-primary-color: #11A84E;
  --page-about-secondary-color: #22C768;
  --page-about-bg-color: #08160F;
  --page-about-card-bg: #11271B;
  --page-about-text-main: #F2FFF6;
  --page-about-text-secondary: #A7D9B8;
  --page-about-border-color: #2E7A4E;
  --page-about-glow-color: #57E38D;
  --page-about-gold-color: #F2C14E;
  --page-about-divider-color: #1E3A2A;
  --page-about-deep-green-color: #0A4B2C;
}

.page-about {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--page-about-text-main); /* Text Main color for overall page content */
  background-color: var(--page-about-bg-color); /* Background color */
}

.page-about__section {
  padding: 80px 0;
  position: relative;
}

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

.page-about__section--why-choose {
  background-color: var(--page-about-deep-green-color);
}

.page-about__section--join {
  background-color: var(--page-about-bg-color);
}

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

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

.page-about__container--center {
  text-align: center;
}

.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--page-about-text-main);
  padding-top: 10px; /* Nhỏ gọn, không dùng var(--header-offset) */
  padding-bottom: 80px;
  text-align: center;
}

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

.page-about__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4); /* Làm tối ảnh nền để chữ nổi bật */
}

.page-about__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 40px 20px;
  background: rgba(0, 0, 0, 0.4); /* Nền tối nhẹ để chữ dễ đọc hơn */
  border-radius: 10px;
}

.page-about__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: bold;
  margin-bottom: 20px;
  color: var(--page-about-gold-color);
  line-height: 1.2;
  letter-spacing: 1px;
}

.page-about__description {
  font-size: 1.15rem;
  margin-bottom: 30px;
  color: var(--page-about-text-main);
}

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

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  white-space: nowrap;
  box-sizing: border-box;
  max-width: 100%;
}

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

.page-about__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(34, 199, 104, 0.4);
}

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

.page-about__btn-secondary:hover {
  background: var(--page-about-primary-color);
  color: #ffffff;
  transform: translateY(-3px);
}

.page-about__section-title {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 40px;
  text-align: center;
  color: var(--page-about-gold-color);
}

.page-about__sub-title {
  font-size: 1.8rem;
  font-weight: bold;
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--page-about-secondary-color);
}

.page-about__paragraph {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 20px;
  color: var(--page-about-text-secondary);
}

.page-about__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

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

.page-about__text-block {
  padding: 20px;
}

.page-about__image-block {
  text-align: center;
}

.page-about__image {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  display: block;
  margin: 0 auto;
}

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

.page-about__list-item {
  font-size: 1.05rem;
  margin-bottom: 10px;
  position: relative;
  padding-left: 30px;
  color: var(--page-about-text-main);
}

.page-about__list-item::before {
  content: '✓';
  color: var(--page-about-primary-color);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.page-about__section--faq {
  background-color: var(--page-about-deep-green-color);
}

.page-about__faq-list {
  max-width: 800px;
  margin: 0 auto;
}

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

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.15rem;
  font-weight: bold;
  color: var(--page-about-text-main);
  transition: background-color 0.3s ease;
  list-style: none;
}

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

.page-about__faq-question:hover {
  background-color: var(--page-about-divider-color);
}

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

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

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

.page-about__faq-item[open] .page-about__faq-toggle {
  content: '−';
}

.page-about__btn-large {
  padding: 18px 40px;
  font-size: 1.2rem;
  margin-top: 30px;
}

.page-about__floating-cta {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about__floating-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 150px;
  height: 50px;
  border-radius: 25px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: #ffffff;
}

.page-about__floating-btn--register {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
}

.page-about__floating-btn--register:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 15px rgba(34, 199, 104, 0.6);
}

.page-about__floating-btn--login {
  background: var(--page-about-gold-color);
  color: var(--page-about-bg-color);
}

.page-about__floating-btn--login:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 15px rgba(242, 193, 78, 0.6);
}

/* Responsive Styles */
@media (max-width: 992px) {
  .page-about__hero-content {
    padding: 30px 15px;
  }

  .page-about__main-title {
    font-size: clamp(2rem, 6vw, 3rem);
  }

  .page-about__description {
    font-size: 1rem;
  }

  .page-about__section-title {
    font-size: 2rem;
  }

  .page-about__sub-title {
    font-size: 1.5rem;
  }

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

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

  .page-about__image-block {
    order: -1; /* Đẩy ảnh lên trên cho bố cục đảo ngược */
    margin-bottom: 20px;
  }
}

@media (max-width: 768px) {
  .page-about {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-about__hero-section {
    padding-bottom: 60px;
  }

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

  .page-about__description {
    font-size: 0.95rem;
  }

  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1rem;
    white-space: normal !important;
    word-wrap: break-word !important;
    box-sizing: border-box !important;
  }

  .page-about__section {
    padding: 40px 0;
  }

  .page-about__container {
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-about__section-title {
    font-size: 1.8rem;
    margin-bottom: 30px;
  }

  .page-about__sub-title {
    font-size: 1.3rem;
    margin-top: 20px;
  }

  .page-about__paragraph,
  .page-about__list-item {
    font-size: 0.95rem;
  }

  /* 强制图片响应式 */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    box-sizing: border-box !important;
  }

  .page-about__image-block,
  .page-about__text-block {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 0; /* Remove padding for mobile content blocks */
  }

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

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

  .page-about__floating-cta {
    flex-direction: row;
    bottom: 15px;
    right: 15px;
    left: 15px;
    width: auto;
    justify-content: space-around;
  }

  .page-about__floating-btn {
    width: 48%; /* Adjust for two buttons */
    height: 45px;
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .page-about__floating-cta {
    flex-direction: column;
    align-items: center;
  }
  .page-about__floating-btn {
    width: 100%;
  }
}

/* 确保所有视频容器和视频元素在移动端适配 */
.page-about video,
.page-about__video {
  max-width: 100%;
  width: 100%;
  height: auto;
  display: block;
}

.page-about__video-section,
.page-about__video-container,
.page-about__video-wrapper {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

@media (max-width: 768px) {
  .page-about video,
  .page-about__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-about__video-section,
  .page-about__video-container,
  .page-about__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
  
  .page-about__video-section {
    padding-top: 10px !important;
  }
  
  .page-about__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
}