/* style/about.css */

/* Biến màu */
:root {
  --page-about-primary-color: #017439;
  --page-about-secondary-color: #FFFFFF;
  --page-about-dark-bg: #121212; /* Kế thừa từ body background */
  --page-about-light-text: #ffffff;
  --page-about-dark-text: #333333;
  --page-about-register-btn-bg: #C30808;
  --page-about-login-btn-bg: #C30808;
  --page-about-register-login-font: #FFFF00;
}

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

.page-about__section {
  padding: 60px 20px;
  text-align: center;
}

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

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

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px; /* Thêm padding ngang cho container */
}

.page-about__section-title {
  font-size: 2.5em;
  margin-bottom: 30px;
  color: var(--page-about-primary-color);
}

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

.page-about__text-block {
  font-size: 1.1em;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Hero Section */
.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh; /* Chiều cao đầy đủ của viewport */
  min-height: 600px;
  padding: 0 20px;
  text-align: center;
  overflow: hidden;
  color: var(--page-about-light-text);
  background-color: var(--page-about-dark-bg);
}

.page-about__hero-image-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.page-about__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4);
}

.page-about__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 20px;
  background: rgba(0, 0, 0, 0.5); /* Nền tối để chữ nổi bật */
  border-radius: 10px;
}

.page-about__hero-title {
  font-size: 3.5em;
  margin-bottom: 20px;
  color: var(--page-about-light-text);
}

.page-about__hero-description {
  font-size: 1.3em;
  margin-bottom: 40px;
  color: var(--page-about-light-text);
}

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

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  box-sizing: border-box;
  max-width: 100%; /* Đảm bảo nút không tràn */
  white-space: normal; /* Cho phép chữ xuống dòng */
  word-wrap: break-word;
}

.page-about__btn-primary {
  background-color: var(--page-about-register-btn-bg);
  color: var(--page-about-register-login-font);
  border: 2px solid var(--page-about-register-btn-bg);
}

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

.page-about__btn-secondary {
  background-color: transparent;
  color: var(--page-about-register-login-font);
  border: 2px solid var(--page-about-register-btn-bg);
}

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

/* Value Props / Milestones / Features / Experience Grid */
.page-about__value-prop-grid,
.page-about__milestones,
.page-about__game-grid,
.page-about__security-features,
.page-about__experience-grid,
.page-about__responsibility-items,
.page-about__future-vision {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__value-prop-item,
.page-about__milestone-item,
.page-about__game-item,
.page-about__feature-item,
.page-about__experience-item,
.page-about__responsibility-item,
.page-about__vision-item {
  background-color: rgba(255, 255, 255, 0.08); /* Nền thẻ tối nhẹ */
  padding: 30px;
  border-radius: 10px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  color: var(--page-about-light-text);
}

.page-about__light-bg .page-about__value-prop-item,
.page-about__light-bg .page-about__game-item,
.page-about__light-bg .page-about__experience-item,
.page-about__light-bg .page-about__responsibility-item,
.page-about__light-bg .page-about__vision-item {
  background-color: var(--page-about-primary-color);
  color: var(--page-about-light-text);
}

.page-about__value-prop-title,
.page-about__milestone-year,
.page-about__game-title,
.page-about__feature-title,
.page-about__experience-title,
.page-about__responsibility-title,
.page-about__vision-title {
  font-size: 1.5em;
  margin-bottom: 15px;
  color: var(--page-about-light-text);
}

.page-about__game-item a,
.page-about__responsibility-item a {
  color: var(--page-about-light-text);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.page-about__image-content {
  width: 100%;
  height: auto;
  border-radius: 10px;
  margin-top: 50px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  display: block;
}

/* FAQ Section */
.page-about__faq-section {
  padding-bottom: 80px;
}

.page-about__faq-list {
  max-width: 900px;
  margin: 40px auto 0 auto;
  text-align: left;
}

.page-about__faq-item {
  background-color: rgba(255, 255, 255, 0.08);
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2em;
  font-weight: bold;
  cursor: pointer;
  color: var(--page-about-light-text);
  background-color: var(--page-about-primary-color);
  transition: background-color 0.3s ease;
}

.page-about__faq-question:hover {
  background-color: darken(var(--page-about-primary-color), 10%);
}

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  transition: transform 0.3s ease;
}

.page-about__faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 25px;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--page-about-light-text);
  background-color: rgba(255, 255, 255, 0.05);
}

.page-about__faq-answer p {
  padding-bottom: 15px;
  margin-top: 10px;
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 1000px !important; /* Đủ lớn để chứa mọi nội dung */
  padding: 15px 25px !important;
}

.page-about__faq-item.active .page-about__faq-toggle {
  transform: rotate(45deg); /* Xoay dấu cộng thành chữ X */
}

/* Contact CTA Section */
.page-about__contact-cta {
  padding: 80px 20px;
}

.page-about__contact-content {
  max-width: 700px;
}

/* Responsive styles */
@media (max-width: 1024px) {
  .page-about__hero-title {
    font-size: 3em;
  }
  .page-about__hero-description {
    font-size: 1.2em;
  }
  .page-about__section-title {
    font-size: 2em;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    height: auto;
    min-height: 500px;
    padding-top: var(--header-offset, 120px) !important; /* Đảm bảo khoảng cách với header */
  }
  .page-about__hero-title {
    font-size: 2.2em;
  }
  .page-about__hero-description {
    font-size: 1em;
  }
  .page-about__hero-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
  }
  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1em;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-about__section {
    padding: 40px 15px;
  }
  .page-about__section-title {
    font-size: 1.8em;
    margin-bottom: 20px;
  }
  .page-about__text-block {
    font-size: 1em;
    margin-bottom: 30px;
  }
  .page-about__value-prop-grid,
  .page-about__milestones,
  .page-about__game-grid,
  .page-about__security-features,
  .page-about__experience-grid,
  .page-about__responsibility-items,
  .page-about__future-vision {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-about__value-prop-item,
  .page-about__milestone-item,
  .page-about__game-item,
  .page-about__feature-item,
  .page-about__experience-item,
  .page-about__responsibility-item,
  .page-about__vision-item {
    padding: 20px;
  }
  .page-about__value-prop-title,
  .page-about__milestone-year,
  .page-about__game-title,
  .page-about__feature-title,
  .page-about__experience-title,
  .page-about__responsibility-title,
  .page-about__vision-title {
    font-size: 1.3em;
  }

  /* Mobile image and video responsiveness */
  .page-about img,
  .page-about video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__hero-section,
  .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-x: hidden !important;
  }
  .page-about__faq-question {
    padding: 15px 20px;
    font-size: 1.1em;
  }
  .page-about__faq-answer {
    padding: 0 20px;
  }
  .page-about__faq-item.active .page-about__faq-answer {
    padding: 15px 20px !important;
  }
}

@media (max-width: 480px) {
  .page-about__hero-title {
    font-size: 1.8em;
  }
  .page-about__hero-description {
    font-size: 0.9em;
  }
  .page-about__section-title {
    font-size: 1.5em;
  }
  .page-about__text-block {
    font-size: 0.9em;
  }
}