/* style/about.css */
/* body đã padding-top: var(--header-offset) từ shared.css; trang này không cần lặp lại */

:root {
  --primary-color: #26A9E0;
  --secondary-color: #FFFFFF;
  --text-color-dark-bg: #FFFFFF;
  --text-color-light-bg: #333333;
  --button-login-color: #EA7C07;
  --background-white: #FFFFFF;
  --background-dark: #0a0a0a;
}

.page-about {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color-dark-bg); /* Body background is #0a0a0a (dark), so text must be light */
  background-color: var(--background-dark);
}

.page-about__section-spacing {
  padding: 60px 0;
}

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

.page-about__hero-section {
  position: relative;
  width: 100%;
  padding-top: 10px; /* Small top padding, body handles --header-offset */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--text-color-dark-bg);
  text-align: center;
}

.page-about__hero-image-wrapper {
  width: 100%;
  position: relative;
  /* Ensure image is above content, not background */
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 600px; /* Limit height for hero image */
}

.page-about__hero-content {
  position: relative;
  z-index: 10;
  padding: 40px 20px;
  max-width: 900px;
  margin-top: -100px; /* Pull content up slightly over the image if needed, but ensure no overlap */
  background: rgba(10, 10, 10, 0.85); /* Semi-transparent dark background for text readability */
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.page-about__main-title {
  font-size: clamp(2em, 4vw, 3.5em); /* Responsive font size for H1 */
  font-weight: 700;
  line-height: 1.2;
  color: var(--secondary-color);
  margin-bottom: 20px;
}

.page-about__description {
  font-size: 1.1em;
  margin-bottom: 30px;
  color: var(--text-color-dark-bg);
}

.page-about__cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease, color 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

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

.page-about__btn-primary:hover {
  background-color: darken(var(--primary-color), 10%);
  border-color: darken(var(--primary-color), 10%);
}

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

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

.page-about__btn-center {
  margin-left: auto;
  margin-right: auto;
  display: table; /* Centers inline-block element */
}

.page-about__section-title {
  font-size: 2.5em;
  font-weight: 700;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 40px;
}

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

.page-about__image-content {
  width: 100%;
  height: auto;
  display: block;
  margin: 30px auto;
  border-radius: 8px;
  object-fit: cover;
  min-width: 200px;
  min-height: 200px;
}

/* Dark section specific styles */
.page-about__dark-section {
  background-color: #1a1a1a; /* Slightly lighter dark for contrast with body */
  color: var(--text-color-dark-bg);
}

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

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

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

.page-about__card {
  background-color: rgba(255, 255, 255, 0.1); /* Semi-transparent white on dark background */
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  color: var(--text-color-dark-bg);
  text-align: center;
  min-height: 200px; /* Ensure cards are not too small */
}

.page-about__card-title {
  font-size: 1.8em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-about__values-list,
.page-about__commitment-list,
.page-about__responsibility-list {
  list-style: none;
  padding: 0;
  margin: 30px 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.page-about__value-item,
.page-about__commitment-item,
.page-about__responsibility-item {
  background-color: rgba(255, 255, 255, 0.08);
  padding: 20px;
  border-left: 5px solid var(--primary-color);
  border-radius: 5px;
  color: var(--text-color-dark-bg);
  font-size: 1.05em;
}

.page-about__stat-item {
  text-align: center;
  padding: 20px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
}

.page-about__stat-number {
  font-size: 3em;
  font-weight: bold;
  color: var(--primary-color);
  display: block;
  margin-bottom: 10px;
}

.page-about__stat-label {
  font-size: 1.1em;
  color: var(--text-color-dark-bg);
}

.page-about__stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 30px;
  margin-bottom: 40px;
}

.page-about__team-members {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.page-about__team-card {
  text-align: center;
}

.page-about__team-avatar {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 15px auto;
  border: 3px solid var(--primary-color);
  min-width: 200px;
  min-height: 200px;
}

.page-about__team-name {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 5px;
}

.page-about__team-role {
  font-size: 1.1em;
  color: var(--text-color-dark-bg);
  margin-bottom: 10px;
}

.page-about__team-bio {
  font-size: 0.95em;
  color: var(--text-color-dark-bg);
}

.page-about__faq-list {
  margin-top: 30px;
}

.page-about__faq-item {
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: var(--text-color-dark-bg);
}

.page-about__faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  cursor: pointer;
  font-weight: bold;
  font-size: 1.15em;
  color: var(--primary-color);
  list-style: none; /* Remove default marker */
}

.page-about__faq-item summary::-webkit-details-marker {
  display: none; /* Remove default marker for WebKit browsers */
}

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

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 10px;
  color: var(--secondary-color);
}

.page-about__faq-answer {
  padding: 0 20px 20px 20px;
  font-size: 1em;
  color: var(--text-color-dark-bg);
  max-height: 0; /* Default collapsed state for JS fallback */
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.page-about__faq-item[open] .page-about__faq-answer {
  max-height: 500px; /* Adjust as needed for content, for native details */
  transition: max-height 0.3s ease-in;
}

/* Fallback for JS-controlled FAQ */
.page-about__faq-item.active .page-about__faq-answer {
  max-height: 500px !important;
}

.page-about__contact-cta-section {
  text-align: center;
}

/* Responsive styles */
@media (max-width: 768px) {
  .page-about__container {
    padding: 0 15px;
  }

  .page-about__hero-content {
    padding: 20px 15px;
    margin-top: -50px; /* Adjust for smaller screens */
  }

  .page-about__main-title {
    font-size: 2em; /* Smaller H1 on mobile */
  }

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

  .page-about__cta-buttons {
    flex-direction: column;
    gap: 10px;
  }

  .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;
  }

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

  .page-about__text-block {
    font-align: left;
  }

  .page-about__cards-grid,
  .page-about__stats-grid,
  .page-about__team-members,
  .page-about__values-list,
  .page-about__commitment-list,
  .page-about__responsibility-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-about__image-content,
  .page-about__hero-image,
  .page-about__team-avatar {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    min-width: 200px !important; /* Ensure minimum size */
    min-height: 200px !important;
  }

  /* All containers with images/buttons/videos */
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__hero-section,
  .page-about__introduction-section,
  .page-about__vision-mission-section,
  .page-about__core-values-section,
  .page-about__achievements-section,
  .page-about__team-section,
  .page-about__safety-fairness-section,
  .page-about__social-responsibility-section,
  .page-about__faq-section,
  .page-about__contact-cta-section,
  .page-about__hero-image-wrapper,
  .page-about__cta-buttons,
  .page-about__button-group,
  .page-about__btn-container,
  .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; /* Prevent horizontal scroll */
  }

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