/* style/about.css */
/* body đã có padding-top: var(--header-offset) từ shared.css, 
   nên các section trong page-about không cần lặp lại biến này. */

:root {
  --page-about-primary-color: #26A9E0;
  --page-about-secondary-color: #FFFFFF;
  --page-about-text-dark: #333333;
  --page-about-text-light: #ffffff;
  --page-about-bg-dark: #000000;
  --page-about-login-color: #EA7C07;
}

.page-about {
  color: var(--page-about-text-light); /* Body background is dark (#000000), so default text is light */
  background-color: var(--page-about-bg-dark);
}

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

/* Hero Section */
.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  padding-top: 10px; /* Small top padding, body handles header offset */
  text-align: center;
  background-color: var(--page-about-primary-color);
  color: var(--page-about-text-light);
  overflow: hidden;
}

.page-about__hero-content {
  position: relative;
  z-index: 10;
  max-width: 900px;
  margin-bottom: 30px;
}

.page-about__main-title {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--page-about-text-light);
  margin-bottom: 20px;
  /* Không đặt font-size cố định quá lớn, dùng clamp nếu cần giới hạn */
  font-size: clamp(2.2rem, 4vw, 3.5rem); 
}

.page-about__description {
  font-size: 1.15rem;
  line-height: 1.6;
  margin-bottom: 30px;
  opacity: 0.9;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
  white-space: nowrap; /* Prevent text wrapping by default */
}

.page-about__btn-primary {
  background: var(--page-about-login-color); /* Sử dụng màu login */
  color: var(--page-about-text-light);
  border: 2px solid var(--page-about-login-color);
  margin: 0 10px;
}

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

.page-about__btn-secondary {
  background: transparent;
  color: var(--page-about-primary-color);
  border: 2px solid var(--page-about-primary-color);
  margin: 0 10px;
}

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

.page-about__hero-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin-top: 30px;
  z-index: 5;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* General Section Styling */
.page-about__intro-section,
.page-about__our-games-section,
.page-about__social-responsibility-section,
.page-about__team-section,
.page-about__faq-section,
.page-about__cta-section {
  padding: 80px 0;
  position: relative;
}

.page-about__intro-section,
.page-about__our-games-section,
.page-about__social-responsibility-section,
.page-about__faq-section {
  background-color: var(--page-about-secondary-color);
  color: var(--page-about-text-dark);
}

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

.page-about__section-title {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.3;
}

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

.page-about__text-block {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 20px;
  text-align: justify;
}

.page-about__brand-name {
  font-weight: 700;
  color: var(--page-about-primary-color);
}

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

.page-about__image-content {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  margin: 40px auto;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  min-width: 200px;
  min-height: 200px;
}

.page-about__sub-title {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 600;
  margin-top: 40px;
  margin-bottom: 20px;
  text-align: center;
}

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

.page-about__feature-card {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
}

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

.page-about__feature-icon {
  width: 100%; /* Ensure image fills card width for impact */
  max-width: 100%; /* Responsive */
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  min-width: 200px;
  min-height: 200px;
}

.page-about__feature-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--page-about-text-light);
}

.page-about__feature-description {
  font-size: 1rem;
  line-height: 1.7;
  opacity: 0.9;
  flex-grow: 1;
}

/* Our Games Section */
.page-about__game-category {
  background: var(--page-about-secondary-color);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  margin-bottom: 40px;
  padding: 30px;
  text-align: center;
  color: var(--page-about-text-dark);
}

.page-about__game-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  margin-bottom: 25px;
  min-width: 200px;
  min-height: 200px;
}

.page-about__game-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.page-about__game-title a {
  color: var(--page-about-text-dark);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about__game-title a:hover {
  color: var(--page-about-primary-color);
}

.page-about__game-description {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 25px;
}

.page-about__btn-link {
  color: var(--page-about-primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

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

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

.page-about__responsibility-item {
  background: #f8f8f8;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  color: var(--page-about-text-dark);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
}

.page-about__responsibility-image {
  width: 100%; /* Ensure image fills item width for impact */
  max-width: 100%; /* Responsive */
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  min-width: 200px;
  min-height: 200px;
}

.page-about__item-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--page-about-primary-color);
}

.page-about__item-description {
  font-size: 1rem;
  line-height: 1.7;
  opacity: 0.9;
  flex-grow: 1;
}

/* FAQ Section */
.page-about__faq-list {
  margin-top: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__faq-item {
  background: #f8f8f8;
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
  color: var(--page-about-text-dark);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--page-about-text-dark);
  cursor: pointer;
  background-color: var(--page-about-secondary-color);
  border-bottom: 1px solid #eee;
  list-style: none; /* For <details> summary */
}

.page-about__faq-question::-webkit-details-marker {
  display: none; /* For <details> summary */
}

.page-about__faq-item[open] .page-about__faq-question {
  border-bottom: 1px solid var(--page-about-primary-color);
}

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

.page-about__faq-toggle {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--page-about-primary-color);
  margin-left: 15px;
}

.page-about__faq-answer {
  padding: 20px 25px;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--page-about-text-dark);
  background-color: #fcfcfc;
}

/* CTA Section */
.page-about__cta-section {
  text-align: center;
  padding: 100px 0;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .page-about__hero-section {
    padding: 40px 15px;
  }

  .page-about__main-title {
    font-size: clamp(2rem, 5vw, 3rem);
  }

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

  .page-about__intro-section,
  .page-about__our-games-section,
  .page-about__social-responsibility-section,
  .page-about__team-section,
  .page-about__faq-section,
  .page-about__cta-section {
    padding: 60px 0;
  }

  .page-about__section-title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
  }

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

  .page-about__sub-title {
    font-size: clamp(1.4rem, 3vw, 2rem);
  }

  .page-about__features-grid,
  .page-about__responsibility-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    flex-direction: column;
    padding: 30px 15px !important;
    padding-top: 10px !important; /* body handles header offset */
  }

  .page-about__hero-content {
    margin-bottom: 20px;
  }

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

  .page-about__description {
    font-size: 0.95rem;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    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;
    margin: 10px 0 !important;
  }

  .page-about__cta-buttons {
    flex-direction: column;
    gap: 10px;
    padding: 0 15px;
  }

  .page-about__container,
  .page-about__intro-section,
  .page-about__our-games-section,
  .page-about__social-responsibility-section,
  .page-about__team-section,
  .page-about__faq-section,
  .page-about__cta-section {
    padding-left: 15px !important;
    padding-right: 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-about img,
  .page-about video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    min-width: 200px !important;
    min-height: 200px !important;
  }

  .page-about__video-section {
    padding-top: 10px !important; /* body handles header offset */
  }

  .page-about__video-container,
  .page-about__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-about__faq-question {
    font-size: 1rem;
    padding: 15px 20px;
  }

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

  .page-about__section-title {
    font-size: clamp(1.5rem, 5vw, 2.2rem);
  }
}

@media (max-width: 480px) {
  .page-about__main-title {
    font-size: clamp(1.6rem, 7vw, 2.2rem);
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    font-size: 0.95rem;
    padding: 12px 20px;
  }

  .page-about__section-title {
    font-size: clamp(1.4rem, 6vw, 2rem);
  }

  .page-about__text-block {
    font-size: 0.9rem;
  }

  .page-about__feature-title,
  .page-about__item-title {
    font-size: 1.3rem;
  }

  .page-about__game-title {
    font-size: 1.5rem;
  }
}