/* style/about.css */

/* Biến CSS (nếu cần, nhưng tránh dùng biến toàn cục) */
:root {
  --page-about-primary-color: #E44D26;
  --page-about-secondary-color: #333333;
  --page-about-light-bg: #f8f8f8;
  --page-about-dark-bg: #1a1a1a; /* Giả định dark-bg-1 là màu tối */
  --page-about-text-light: #ffffff;
  --page-about-text-dark: #333333;
  --page-about-border-color: #e0e0e0;
}

.page-about {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--page-about-text-light); /* Mặc định chữ sáng trên nền tối của body */
  background-color: var(--dark-bg-1); /* Kế thừa từ shared.css */
}

.page-about__main-content-wrapper {
  padding-top: 120px; /* Khoảng cách cho header cố định trên desktop */
}

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

/* Phần Hero Section */
.page-about__hero-section {
  background: linear-gradient(135deg, var(--page-about-primary-color) 0%, #FF6600 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--page-about-text-light);
  position: relative;
  overflow: hidden;
}

.page-about__hero-content {
  position: relative;
  z-index: 2;
}

.page-about__hero-title {
  font-size: 3.2em;
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.page-about__hero-description {
  font-size: 1.2em;
  max-width: 800px;
  margin: 0 auto 40px;
  opacity: 0.9;
}

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

.page-about__cta-button {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.1em;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.page-about__cta-button--primary {
  background-color: var(--page-about-text-light);
  color: var(--page-about-primary-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about__cta-button--primary:hover {
  background-color: #f0f0f0;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-about__cta-button--secondary {
  background-color: transparent;
  color: var(--page-about-text-light);
  border-color: var(--page-about-text-light);
}

.page-about__cta-button--secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
  border-color: #f0f0f0;
}

.page-about__inline-link {
  color: var(--page-about-primary-color);
  text-decoration: underline;
  font-weight: 600;
  transition: color 0.3s ease;
}

.page-about__inline-link:hover {
  color: #FF6600;
}

/* Các Section chung */
.page-about__introduction-section, .page-about__advantages-section, .page-about__faq-section, .page-about__cta-section {
  padding: 80px 0;
}

.page-about__mission-vision-section, .page-about__security-section {
  padding: 80px 0;
}

.page-about__section-title {
  font-size: 2.5em;
  text-align: center;
  margin-bottom: 60px;
  font-weight: 700;
  color: var(--page-about-text-dark);
}

.page-about__section-title--light {
  color: var(--page-about-text-light);
}

.page-about__highlight {
  color: var(--page-about-primary-color);
}

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

.page-about__light-bg {
  background-color: var(--page-about-light-bg);
  color: var(--page-about-text-dark);
}

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

/* Grid cho nội dung */
.page-about__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.page-about__text-block p {
  margin-bottom: 15px;
  font-size: 1.1em;
}

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

.page-about__image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Card Grid */
.page-about__cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-about__card {
  background-color: var(--page-about-text-light);
  color: var(--page-about-text-dark);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.page-about__card--light-text {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--page-about-text-light);
}

.page-about__card-title {
  font-size: 1.6em;
  margin-top: 0;
  margin-bottom: 20px;
  font-weight: 600;
  color: var(--page-about-primary-color);
}

.page-about__card--light-text .page-about__card-title {
  color: var(--page-about-text-light);
}

.page-about__value-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-about__value-list li {
  margin-bottom: 10px;
  font-size: 1.05em;
}

.page-about__advantage-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.page-about__advantage-list li {
  margin-bottom: 30px;
}

.page-about__advantage-title {
  font-size: 1.4em;
  margin-top: 0;
  margin-bottom: 10px;
  color: var(--page-about-primary-color);
}

/* Security Section */
.page-about__security-description {
  font-size: 1.15em;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 50px;
}

.page-about__security-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.page-about__security-features .page-about__card {
  text-align: center;
  padding: 40px 25px;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--page-about-text-light);
}

.page-about__security-features .page-about__card-title {
  font-size: 1.5em;
  color: var(--page-about-text-light);
}

.page-about__feature-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  display: inline-block;
}

.page-about__security-cta {
  text-align: center;
}

/* FAQ Section */
.page-about__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

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

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background: var(--page-about-text-light);
  color: var(--page-about-text-dark);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-about__faq-question:hover {
  background: #f0f0f0;
}

.page-about__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 1.15em;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* Prevent h3 from blocking click event */
  color: var(--page-about-secondary-color);
}

.page-about__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: var(--page-about-primary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* Prevent icon from blocking click event */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.page-about__faq-item.active .page-about__faq-toggle {
  transform: rotate(45deg); /* Optional: rotate for 'x' effect */
  color: var(--page-about-primary-color);
}

.page-about__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 25px;
  opacity: 0;
  color: var(--page-about-text-dark);
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 2000px !important; /* Use !important and large value to ensure expansion */
  padding: 20px 25px !important;
  opacity: 1;
  background-color: #f9f9f9;
  border-top: 1px solid var(--page-about-border-color);
}

.page-about__faq-answer p {
  margin-bottom: 10px;
  font-size: 1.05em;
}

/* CTA Section cuối trang */
.page-about__cta-section {
  background-color: var(--page-about-primary-color);
  color: var(--page-about-text-light);
  text-align: center;
  padding: 80px 0;
}

.page-about__cta-section .page-about__section-title {
  color: var(--page-about-text-light);
  margin-bottom: 20px;
}

.page-about__cta-description {
  font-size: 1.2em;
  max-width: 800px;
  margin: 0 auto 40px;
  opacity: 0.9;
}

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

/* Responsive Design */
@media (max-width: 992px) {
  .page-about__hero-title {
    font-size: 2.8em;
  }
  .page-about__section-title {
    font-size: 2em;
  }
  .page-about__content-grid {
    grid-template-columns: 1fr;
  }
  .page-about__image-block {
    order: -1; /* Đẩy ảnh lên trên trên mobile */
    margin-bottom: 30px;
  }
  .page-about__cards-grid {
    grid-template-columns: 1fr;
  }
  .page-about__security-features {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .page-about__main-content-wrapper {
    padding-top: 100px !important; /* Khoảng cách cho header cố định trên mobile */
  }
  .page-about__hero-section,
  .page-about__introduction-section,
  .page-about__mission-vision-section,
  .page-about__advantages-section,
  .page-about__security-section,
  .page-about__faq-section,
  .page-about__cta-section {
    padding: 40px 0;
  }
  .page-about__hero-title {
    font-size: 2.2em;
  }
  .page-about__hero-description,
  .page-about__cta-description {
    font-size: 1em;
  }
  .page-about__section-title {
    font-size: 1.8em;
    margin-bottom: 40px;
  }
  .page-about__cta-button {
    padding: 12px 25px;
    font-size: 1em;
  }
  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__container {
    padding: 0 15px;
  }
  .page-about__text-block p {
    font-size: 1em;
  }
  .page-about__card-title {
    font-size: 1.4em;
  }
  .page-about__advantage-title {
    font-size: 1.2em;
  }
  .page-about__faq-question {
    padding: 15px 18px;
  }
  .page-about__faq-question h3 {
    font-size: 1em;
  }
  .page-about__faq-toggle {
    font-size: 24px;
    width: 28px;
    height: 28px;
  }
  .page-about__faq-answer {
    padding: 0 18px;
  }
  .page-about__faq-item.active .page-about__faq-answer {
    padding: 15px 18px !important;
  }
  
  /* Responsive images and containers for mobile */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__hero-section,
  .page-about__introduction-section,
  .page-about__mission-vision-section,
  .page-about__advantages-section,
  .page-about__security-section,
  .page-about__faq-section,
  .page-about__cta-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    /* padding-left: 15px;
    padding-right: 15px; */ /* Container already handles this */
  }
}