/* style/about.css */

/* Biến CSS cục bộ cho trang Giới thiệu */
:root {
  --page-about-primary-color: #FFD700; /* Vàng */
  --page-about-secondary-color: #1A1A1A; /* Đen */
  --page-about-text-light: #ffffff;
  --page-about-text-dark: #333333;
  --page-about-card-bg: rgba(255, 255, 255, 0.08); /* Nền thẻ hơi trong suốt trên nền tối */
  --page-about-border-color: rgba(255, 255, 255, 0.15);
}

/* Các kiểu chung cho trang Giới thiệu */
.page-about {
  font-family: 'Arial', sans-serif;
  color: var(--page-about-text-light); /* Mặc định chữ sáng trên nền tối của body */
  background-color: var(--page-about-secondary-color); /* Nền body là màu tối */
  line-height: 1.6;
  padding-top: var(--header-offset, 120px); /* Đảm bảo không bị header che */
}

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

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

.page-about__section-title {
  font-size: 2.8em;
  color: var(--page-about-primary-color);
  margin-bottom: 30px;
  position: relative;
  padding-bottom: 15px;
}

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

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

.page-about__subsection-title {
  font-size: 1.8em;
  color: var(--page-about-primary-color);
  margin-top: 30px;
  margin-bottom: 15px;
  text-align: left;
}

/* Hero Section */
.page-about__hero-section {
  position: relative;
  width: 100%;
  height: 70vh; /* Chiều cao tương đối */
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--page-about-text-light);
  overflow: hidden;
}

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

.page-about__hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7); /* Lớp phủ tối để chữ dễ đọc */
  z-index: 2;
}

.page-about__hero-content {
  position: relative;
  z-index: 3;
  max-width: 900px;
  padding: 20px;
}

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

.page-about__hero-description {
  font-size: 1.5em;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: var(--page-about-text-light);
}

.page-about__hero-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
}

/* Buttons */
.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: 1.1em;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal; /* Cho phép chữ xuống dòng */
  word-wrap: break-word;
}

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

.page-about__btn-primary:hover {
  background-color: transparent;
  color: var(--page-about-primary-color);
}

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

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

/* Content Grid */
.page-about__content-grid {
  display: flex;
  align-items: center;
  gap: 40px;
  text-align: left;
  margin-top: 40px;
}

.page-about__content-grid--reverse {
  flex-direction: row-reverse;
}

.page-about__text-content {
  flex: 1;
}

.page-about__image-wrapper {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

/* Dark Sections */
.page-about__dark-section {
  background-color: var(--page-about-secondary-color);
  color: var(--page-about-text-light);
}

.page-about__dark-section .page-about__section-title {
  color: var(--page-about-primary-color);
}

.page-about__dark-section .page-about__text-block {
  color: var(--page-about-text-light);
}

/* Core Values Section */
.page-about__values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__value-card {
  background-color: var(--page-about-card-bg);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--page-about-border-color);
  transition: transform 0.3s ease;
}

.page-about__value-card:hover {
  transform: translateY(-10px);
}

.page-about__value-title {
  font-size: 1.5em;
  color: var(--page-about-primary-color);
  margin-bottom: 15px;
}

.page-about__value-description {
  font-size: 1em;
  color: var(--page-about-text-light);
}

/* Why Choose Section */
.page-about__feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__feature-card {
  background-color: var(--page-about-card-bg);
  padding: 30px;
  border-radius: 10px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--page-about-border-color);
  transition: transform 0.3s ease;
}

.page-about__feature-card:hover {
  transform: translateY(-5px);
}

.page-about__feature-title {
  font-size: 1.6em;
  color: var(--page-about-primary-color);
  margin-bottom: 10px;
}

.page-about__feature-description {
  font-size: 1em;
  color: var(--page-about-text-light);
}

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

/* Video Section */
.page-about__video-section {
  background-color: var(--page-about-secondary-color);
  color: var(--page-about-text-light);
}

.page-about__video-wrapper {
  position: relative;
  width: 100%;
  max-width: 900px; /* Giới hạn chiều rộng video */
  margin: 30px auto;
  aspect-ratio: 16 / 9; /* Tỷ lệ 16:9 */
  background-color: #000;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.page-about__video {
  width: 100%;
  height: 100%;
  display: block;
  cursor: pointer; /* Thêm con trỏ dạng bàn tay */
}

.page-about__video-overlay-link {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3); /* Lớp phủ mờ */
  opacity: 1;
  transition: opacity 0.3s ease;
  z-index: 10;
  text-decoration: none;
  color: inherit;
}

.page-about__video-overlay-link:hover {
  opacity: 0.8;
}

.page-about__video-play-icon {
  font-size: 4em;
  color: var(--page-about-primary-color);
  border: 3px solid var(--page-about-primary-color);
  border-radius: 50%;
  padding: 15px 25px 15px 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  transition: transform 0.3s ease, color 0.3s ease;
}

.page-about__video-overlay-link:hover .page-about__video-play-icon {
  transform: scale(1.1);
  color: #fff;
}

.page-about__video-caption {
  font-size: 0.9em;
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.7);
}

/* FAQ Section */
.page-about__faq-section {
  background-color: var(--page-about-secondary-color);
  color: var(--page-about-text-light);
}

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

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

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background-color: var(--page-about-card-bg);
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.page-about__faq-question:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

.page-about__faq-title {
  font-size: 1.2em;
  color: var(--page-about-primary-color);
  margin: 0;
}

.page-about__faq-toggle {
  font-size: 1.8em;
  font-weight: bold;
  color: var(--page-about-primary-color);
  transition: transform 0.3s ease;
}

.page-about__faq-item.active .page-about__faq-toggle {
  transform: rotate(0deg);
}

.page-about__faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 25px;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--page-about-text-light);
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 1000px !important; /* Đảm bảo đủ lớn để hiển thị nội dung */
  padding: 15px 25px 25px 25px;
}

.page-about__faq-answer p {
  margin-bottom: 10px;
  font-size: 1em;
  line-height: 1.6;
  color: var(--page-about-text-light);
}

/* Final CTA Section */
.page-about__cta-final {
  padding: 80px 0;
  background-color: var(--page-about-primary-color);
  color: var(--page-about-secondary-color);
}

.page-about__cta-final .page-about__section-title {
  color: var(--page-about-secondary-color);
}

.page-about__cta-final .page-about__section-title::after {
  background-color: var(--page-about-secondary-color);
}

.page-about__cta-final .page-about__text-block {
  color: var(--page-about-secondary-color);
  font-size: 1.2em;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__cta-actions {
  margin-top: 40px;
  display: flex;
  gap: 20px;
  justify-content: center;
}

.page-about__cta-final .page-about__btn-primary {
  background-color: var(--page-about-secondary-color);
  color: var(--page-about-primary-color);
  border-color: var(--page-about-secondary-color);
}

.page-about__cta-final .page-about__btn-primary:hover {
  background-color: transparent;
  color: var(--page-about-secondary-color);
}

.page-about__cta-final .page-about__btn-secondary {
  background-color: transparent;
  color: var(--page-about-secondary-color);
  border-color: var(--page-about-secondary-color);
}

.page-about__cta-final .page-about__btn-secondary:hover {
  background-color: var(--page-about-secondary-color);
  color: var(--page-about-primary-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-about__hero-title {
    font-size: 3.5em;
  }

  .page-about__hero-description {
    font-size: 1.3em;
  }

  .page-about__section-title {
    font-size: 2.2em;
  }

  .page-about__subsection-title {
    font-size: 1.6em;
  }

  .page-about__text-block {
    font-size: 1em;
  }

  .page-about__content-grid {
    flex-direction: column;
  }

  .page-about__content-grid--reverse {
    flex-direction: column-reverse;
  }

  .page-about__video-wrapper {
    max-width: 700px;
  }
}

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

  .page-about__hero-section {
    height: 60vh;
  }

  .page-about__hero-title {
    font-size: 2.5em;
  }

  .page-about__hero-description {
    font-size: 1.1em;
  }

  .page-about__hero-actions {
    flex-direction: column;
    gap: 15px;
    padding: 0 20px;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important; /* Bắt buộc cho nút */
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1em;
  }
  
  .page-about__hero-actions .page-about__btn-primary,
  .page-about__hero-actions .page-about__btn-secondary {
    margin: 0 auto; /* Căn giữa các nút khi là cột */
  }

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

  .page-about__section-title {
    font-size: 1.8em;
  }

  .page-about__subsection-title {
    font-size: 1.4em;
  }

  .page-about__values-grid,
  .page-about__feature-grid {
    grid-template-columns: 1fr;
  }

  .page-about__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 0 15px; /* Thêm padding ngang */
  }

  .page-about__video,
  .page-about__image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-about__video-section {
    padding-top: var(--header-offset, 120px) !important; /* Đảm bảo khoảng cách với header */
  }

  .page-about__cta-bottom,
  .page-about__cta-actions {
    flex-direction: column;
    gap: 15px;
    padding: 0 20px;
  }

  .page-about__cta-bottom .page-about__btn-primary,
  .page-about__cta-bottom .page-about__btn-secondary,
  .page-about__cta-actions .page-about__btn-primary,
  .page-about__cta-actions .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 auto;
  }

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

  /* Các container chứa hình ảnh và video */
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__content-grid,
  .page-about__text-content,
  .page-about__image-wrapper,
  .page-about__video-section,
  .page-about__video-container,
  .page-about__video-wrapper,
  .page-about__cta-buttons,
  .page-about__button-group,
  .page-about__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important; /* Ngăn chặn tràn nội dung */
  }
  
  /* Padding cho các container chính trên di động */
  .page-about__section > .page-about__container {
    padding-left: 15px;
    padding-right: 15px;
  }
}

@media (max-width: 480px) {
  .page-about__hero-title {
    font-size: 2em;
  }

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

  .page-about__section-title {
    font-size: 1.6em;
  }

  .page-about__faq-title {
    font-size: 1em;
  }

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

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

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