/* style/about.css */
/* body đã padding-top: var(--header-offset) */

:root {
  --page-about-primary-color: #11A84E;
  --page-about-secondary-color: #22C768;
  --page-about-card-bg: #11271B;
  --page-about-background: #08160F;
  --page-about-text-main: #F2FFF6;
  --page-about-text-secondary: #A7D9B8;
  --page-about-border: #2E7A4E;
  --page-about-glow: #57E38D;
  --page-about-gold: #F2C14E;
  --page-about-divider: #1E3A2A;
  --page-about-deep-green: #0A4B2C;
  --page-about-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
}

.page-about {
  color: var(--page-about-text-main); /* Body background is dark, use light text */
  background-color: var(--page-about-background);
  font-family: Arial, sans-serif;
  line-height: 1.6;
}

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10px; /* Small top padding, body handles header offset */
  padding-bottom: 60px;
  overflow: hidden;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  max-height: 70vh;
  display: block;
  margin-bottom: 30px;
}

.page-about__hero-content {
  max-width: 900px;
  text-align: center;
  padding: 0 20px;
  z-index: 1;
}

.page-about__main-title {
  color: var(--page-about-gold);
  font-size: clamp(2em, 4vw, 3.5em);
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: bold;
}

.page-about__hero-description {
  font-size: 1.1em;
  color: var(--page-about-text-secondary);
  margin-bottom: 30px;
}

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

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

.page-about__btn-primary {
  background: var(--page-about-button-gradient);
  color: var(--page-about-text-main);
  border: none;
}

.page-about__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

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

.page-about__btn-secondary:hover {
  background-color: var(--page-about-gold);
  color: var(--page-about-background);
  transform: translateY(-2px);
}

.page-about__section {
  padding: 80px 0;
  border-bottom: 1px solid var(--page-about-divider);
}

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

.page-about__light-bg {
  background-color: var(--page-about-background);
  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__section-title {
  font-size: 2.5em;
  color: var(--page-about-gold);
  text-align: center;
  margin-bottom: 40px;
  font-weight: bold;
}

.page-about__section-description {
  font-size: 1.1em;
  color: var(--page-about-text-secondary);
  text-align: center;
  max-width: 800px;
  margin: 0 auto 60px auto;
}

.page-about__sub-title {
  font-size: 1.8em;
  color: var(--page-about-gold);
  margin-top: 40px;
  margin-bottom: 20px;
  font-weight: bold;
}

.page-about__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.page-about__text-block p {
  margin-bottom: 15px;
  color: var(--page-about-text-secondary);
}

.page-about__text-block strong {
  color: var(--page-about-text-main);
}

.page-about__image-block img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
}

.page-about__image-block--center {
  text-align: center;
  margin-top: 40px;
}

.page-about__value-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
}

.page-about__value-list li {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border);
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 8px;
  color: var(--page-about-text-main);
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.page-about__value-list li strong {
  color: var(--page-about-gold);
  font-size: 1.1em;
  flex-shrink: 0;
}

.page-about__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 60px;
  margin-bottom: 60px;
}

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

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

.page-about__card p {
  color: var(--page-about-text-secondary);
}

.page-about__commitments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.page-about__commitment-item {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.page-about__commitment-item .page-about__sub-title {
  margin-top: 0;
  font-size: 1.6em;
}

.page-about__commitment-item p {
  color: var(--page-about-text-secondary);
}

.page-about__history-timeline {
  position: relative;
  max-width: 900px;
  margin: 60px auto;
  padding-left: 50px;
}

.page-about__history-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--page-about-border);
  border-radius: 2px;
}

.page-about__timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 40px;
}

.page-about__timeline-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  width: 18px;
  height: 18px;
  background-color: var(--page-about-gold);
  border: 3px solid var(--page-about-primary-color);
  border-radius: 50%;
  z-index: 1;
}

.page-about__timeline-year {
  font-size: 1.4em;
  color: var(--page-about-gold);
  margin-top: 0;
  margin-bottom: 10px;
}

.page-about__timeline-item p {
  color: var(--page-about-text-secondary);
}

.page-about__team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 60px;
}

.page-about__team-member {
  text-align: center;
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border);
  padding: 30px;
  border-radius: 10px;
}

.page-about__team-member img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 20px;
  border: 4px solid var(--page-about-gold);
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-about__member-name {
  font-size: 1.4em;
  color: var(--page-about-gold);
  margin-bottom: 10px;
}

.page-about__member-role {
  color: var(--page-about-text-secondary);
}

.page-about__team-text {
  text-align: center;
  margin-top: 60px;
  font-size: 1.1em;
  color: var(--page-about-text-secondary);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__list {
  list-style: disc;
  padding-left: 25px;
  color: var(--page-about-text-secondary);
  margin-top: 20px;
}

.page-about__list li {
  margin-bottom: 10px;
}

.page-about__list li strong {
  color: var(--page-about-text-main);
}

.page-about__faq-section {
  padding-top: 80px;
  padding-bottom: 80px;
  background-color: var(--page-about-background);
  color: var(--page-about-text-main);
}

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

.page-about__faq-item {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border);
  margin-bottom: 20px;
  border-radius: 8px;
  overflow: hidden;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.2em;
  font-weight: bold;
  color: var(--page-about-gold);
  background-color: var(--page-about-deep-green);
  border-bottom: 1px solid var(--page-about-divider);
  list-style: none; /* For details/summary */
}

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

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

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
}

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

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

.page-about__faq-answer p {
  margin-bottom: 10px;
}

.page-about__cta-bottom {
  padding: 100px 0;
  text-align: center;
  background-color: var(--page-about-deep-green);
}

.page-about__cta-bottom .page-about__section-title {
  color: var(--page-about-gold);
}

.page-about__cta-bottom .page-about__section-description {
  color: var(--page-about-text-secondary);
}

/* Responsive styles */
@media (max-width: 992px) {
  .page-about__content-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .page-about__image-block {
    order: -1; /* Image appears above text on smaller screens */
  }
  .page-about__main-title {
    font-size: clamp(1.8em, 5vw, 3em);
  }
  .page-about__section-title {
    font-size: 2em;
  }
  .page-about__sub-title {
    font-size: 1.5em;
  }
  .page-about__features-grid {
    grid-template-columns: 1fr;
  }
  .page-about__commitments-grid {
    grid-template-columns: 1fr;
  }
  .page-about__team-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    padding-bottom: 40px;
  }
  .page-about__hero-image {
    max-height: 50vh;
  }
  .page-about__main-title {
    font-size: clamp(1.5em, 6vw, 2.5em);
  }
  .page-about__hero-description {
    font-size: 1em;
  }
  .page-about__section {
    padding: 60px 0;
  }
  .page-about__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }
  .page-about__section-description {
    font-size: 0.95em;
    margin-bottom: 40px;
  }
  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding: 15px 20px;
  }
  .page-about__container,
  .page-about__hero-content {
    padding-left: 15px;
    padding-right: 15px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-about__history-timeline {
    padding-left: 30px;
    margin-left: 15px;
    margin-right: 15px;
  }
  .page-about__history-timeline::before {
    left: 10px;
  }
  .page-about__timeline-item::before {
    left: -5px;
  }
  .page-about__faq-question {
    padding: 15px 20px;
    font-size: 1.1em;
  }
  .page-about__faq-answer {
    padding: 15px 20px;
  }

  /* Mobile image responsiveness */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__image-block,
  .page-about__text-block,
  .page-about__hero-content,
  .page-about__cta-buttons,
  .page-about__faq-list,
  .page-about__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important; /* Ensure no overflow */
  }
  /* Specific padding for sections/containers if not already handled by general container rule */
  .page-about__section:not(.page-about__hero-section) .page-about__container {
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about__hero-section {
    padding-top: 10px !important;
  }
}