/* style/about.css */
/* body đã padding-top: var(--header-offset) từ shared.css, không lặp lại ở đây */

:root {
  --page-about-primary-color: #11A84E;
  --page-about-secondary-color: #22C768;
  --page-about-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --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-light-text: #ffffff;
  --page-about-dark-text: #333333;
}

.page-about {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--page-about-text-main); /* Default text color for dark background */
  background-color: var(--page-about-background); /* Overall page background */
}

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

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

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

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

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

.page-about__hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 30px 20px;
  max-width: 900px;
  margin-top: -100px; /* Overlap slightly with image for visual flow */
  background-color: rgba(17, 39, 27, 0.8); /* Card BG with transparency */
  border-radius: 10px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--page-about-border);
}

.page-about__main-title {
  color: var(--page-about-gold);
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 15px;
  text-shadow: 0 0 10px rgba(242, 193, 78, 0.5);
}

.page-about__hero-description {
  color: var(--page-about-text-main);
  font-size: 1.15rem;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.page-about__btn-primary,
.page-about__btn-secondary,
.page-about__btn-link,
.page-about__btn-download {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-about__btn-primary {
  background: var(--page-about-button-gradient);
  color: var(--page-about-light-text);
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
}

.page-about__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(42, 209, 111, 0.6);
}

.page-about__btn-secondary {
  background: transparent;
  color: var(--page-about-secondary-color);
  border: 2px solid var(--page-about-secondary-color);
  box-shadow: 0 4px 15px rgba(34, 199, 104, 0.2);
}

.page-about__btn-secondary:hover {
  background-color: var(--page-about-secondary-color);
  color: var(--page-about-light-text);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(34, 199, 104, 0.4);
}

.page-about__section-title {
  color: var(--page-about-gold);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  text-shadow: 0 0 8px rgba(242, 193, 78, 0.3);
}

.page-about__text-block {
  color: var(--page-about-text-secondary);
  font-size: 1.05rem;
  margin-bottom: 20px;
  text-align: justify;
}

.page-about__values-grid,
.page-about__security-features,
.page-about__game-categories,
.page-about__advantages-grid,
.page-about__support-channels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__value-card,
.page-about__feature-card,
.page-about__category-card,
.page-about__advantage-card,
.page-about__channel-card {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%; /* Ensure cards in a row have equal height */
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.page-about__value-card:hover,
.page-about__feature-card:hover,
.page-about__category-card:hover,
.page-about__advantage-card:hover,
.page-about__channel-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.page-about__value-title,
.page-about__feature-title,
.page-about__category-title,
.page-about__advantage-title,
.page-about__channel-title {
  color: var(--page-about-primary-color);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 15px;
}

.page-about__value-description,
.page-about__feature-description,
.page-about__category-description,
.page-about__advantage-description,
.page-about__channel-description {
  color: var(--page-about-text-secondary);
  font-size: 1rem;
}

.page-about__category-image,
.page-about__history-image,
.page-about__feature-icon,
.page-about__advantage-icon {
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  object-fit: cover;
  display: block; /* Ensure it takes full width */
}

.page-about__feature-icon,
.page-about__advantage-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto 20px auto;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--page-about-primary-color);
  box-shadow: 0 0 15px rgba(17, 168, 78, 0.4);
}

.page-about__category-title a {
  color: var(--page-about-primary-color);
  text-decoration: none;
}

.page-about__category-title a:hover {
  color: var(--page-about-gold);
  text-decoration: underline;
}

.page-about__timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  margin: 50px 0;
  padding-left: 20px;
}

.page-about__timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background-color: var(--page-about-divider);
}

.page-about__timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 30px;
}

.page-about__timeline-item::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 5px;
  width: 20px;
  height: 20px;
  background-color: var(--page-about-primary-color);
  border-radius: 50%;
  border: 4px solid var(--page-about-deep-green);
  box-shadow: 0 0 10px rgba(17, 168, 78, 0.5);
}

.page-about__timeline-year {
  color: var(--page-about-gold);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.page-about__timeline-event {
  color: var(--page-about-text-secondary);
  font-size: 1.1rem;
}

.page-about__history-image {
  margin-top: 40px;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--page-about-border);
}

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

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

.page-about__responsible-list li::before {
  content: '✓';
  color: var(--page-about-glow);
  font-weight: bold;
  margin-right: 15px;
  font-size: 1.2em;
}

.page-about__responsible-list li a {
  color: var(--page-about-secondary-color);
  text-decoration: none;
  font-weight: 600;
}

.page-about__responsible-list li a:hover {
  text-decoration: underline;
  color: var(--page-about-gold);
}

.page-about__btn-link {
  background: var(--page-about-deep-green);
  color: var(--page-about-text-main);
  border: 1px solid var(--page-about-border);
  margin-top: 15px;
  padding: 10px 20px;
  font-size: 0.95rem;
}

.page-about__btn-link:hover {
  background-color: var(--page-about-primary-color);
  color: var(--page-about-light-text);
  border-color: var(--page-about-primary-color);
}

.page-about__btn-download {
  background: var(--page-about-button-gradient);
  color: var(--page-about-light-text);
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
  margin-top: 20px;
}

.page-about__btn-download:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(42, 209, 111, 0.6);
}

.page-about__faq-list {
  margin-top: 40px;
}

.page-about__faq-item {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border);
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.page-about__faq-item[open] {
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  color: var(--page-about-text-main);
  font-size: 1.2rem;
  font-weight: 600;
  background-color: var(--page-about-deep-green);
  transition: background-color 0.3s ease;
  list-style: none; /* For details/summary */
}

.page-about__faq-question::-webkit-details-marker {
  display: none; /* Hide default marker for Chrome */
}

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

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

.page-about__faq-toggle {
  font-size: 1.5rem;
  font-weight: bold;
  margin-left: 15px;
  color: var(--page-about-gold);
}

.page-about__faq-answer {
  padding: 20px 25px;
  color: var(--page-about-text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  border-top: 1px solid var(--page-about-border);
}

.page-about__call-to-action {
  text-align: center;
  padding: 80px 0;
}

.page-about__cta-content {
  max-width: 800px;
}

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

.page-about__cta-content .page-about__text-block {
  color: var(--page-about-text-secondary);
  margin-bottom: 40px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-about__hero-content {
    margin-top: -80px;
  }
}

@media (max-width: 768px) {
  .page-about__section-spacing {
    padding: 40px 0;
  }

  .page-about__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
  }

  .page-about__hero-content {
    margin-top: -60px;
    padding: 25px 15px;
  }

  .page-about__main-title {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
  }

  .page-about__hero-description {
    font-size: 1rem;
    margin-bottom: 25px;
  }

  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
    padding: 0 15px;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about__btn-link,
  .page-about__btn-download {
    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: clamp(1.5rem, 5vw, 2.2rem);
    margin-bottom: 30px;
  }

  .page-about__text-block,
  .page-about__value-description,
  .page-about__feature-description,
  .page-about__category-description,
  .page-about__advantage-description,
  .page-about__channel-description {
    font-size: 0.95rem;
  }

  .page-about__values-grid,
  .page-about__security-features,
  .page-about__game-categories,
  .page-about__advantages-grid,
  .page-about__support-channels {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 30px;
  }

  .page-about__timeline {
    padding-left: 15px;
  }

  .page-about__timeline::before {
    left: 0;
  }

  .page-about__timeline-item::before {
    left: -8px;
  }

  .page-about__timeline-year {
    font-size: 1.6rem;
  }

  .page-about__history-image {
    margin-top: 30px;
  }

  .page-about__responsible-list li {
    padding: 12px 15px;
    font-size: 0.95rem;
  }

  .page-about__faq-question {
    padding: 15px 20px;
    font-size: 1.1rem;
  }

  .page-about__faq-answer {
    padding: 15px 20px;
    font-size: 0.95rem;
  }

  .page-about__call-to-action {
    padding: 60px 0;
  }

  /* Force responsive images, videos, containers */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about video,
  .page-about__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__container,
  .page-about__hero-section,
  .page-about__intro-section,
  .page-about__history-section,
  .page-about__license-security-section,
  .page-about__games-section,
  .page-about__responsible-gaming-section,
  .page-about__customer-support-section,
  .page-about__why-choose-us-section,
  .page-about__faq-section,
  .page-about__call-to-action,
  .page-about__value-card,
  .page-about__feature-card,
  .page-about__category-card,
  .page-about__advantage-card,
  .page-about__channel-card,
  .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__cta-buttons,
  .page-about__button-group,
  .page-about__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
    overflow: hidden !important;
  }
  .page-about__cta-buttons {
    flex-direction: column;
  }
}