/* style/about.css */

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

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

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

.page-about__section-title {
  font-size: 2.5em;
  color: var(--page-about-secondary-color);
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 10px;
}

.page-about__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--page-about-primary-color);
  border-radius: 2px;
}

.page-about__section-description {
  font-size: 1.1em;
  text-align: center;
  margin-bottom: 50px;
  color: rgba(255, 255, 255, 0.8);
}

.page-about__sub-title {
  font-size: 1.8em;
  color: var(--page-about-primary-color);
  margin-top: 30px;
  margin-bottom: 15px;
}

.page-about p {
  margin-bottom: 15px;
  color: inherit;
}

.page-about__dark-bg {
  background-color: #0d0d0d; /* Slightly lighter dark for sections */
  color: var(--page-about-text-color-dark-bg);
  padding: 80px 0;
}

.page-about__light-bg {
  background-color: var(--page-about-background-color);
  color: var(--page-about-text-color-light-bg);
  padding: 80px 0;
}

/* Hero Section */
.page-about__hero-section {
  position: relative;
  width: 100%;
  height: 600px; /* Adjusted for better visibility on desktop */
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: var(--header-offset, 120px); /* Ensure content is not covered by fixed header */
}

.page-about__hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.page-about__hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 2;
}

.page-about__hero-content {
  position: relative;
  z-index: 3;
  color: var(--page-about-secondary-color);
  max-width: 900px;
  padding: 0 20px;
}

.page-about__hero-title {
  font-size: 3.5em;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--page-about-secondary-color);
}

.page-about__hero-description {
  font-size: 1.3em;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.9);
}

.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;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  cursor: pointer;
}

.page-about__btn-primary {
  background-color: var(--page-about-register-color);
  color: var(--page-about-register-login-font-color);
}

.page-about__btn-primary:hover {
  background-color: #a30606;
  transform: translateY(-2px);
}

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

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

/* Content Grid */
.page-about__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-top: 50px;
}

.page-about__content-grid--reverse {
  grid-template-columns: 1fr 1fr;
}

.page-about__content-grid--reverse .page-about__image-block {
  order: 2;
}

.page-about__content-grid--reverse .page-about__text-block {
  order: 1;
}

.page-about__image-block {
  text-align: center;
}

.page-about__image-responsive {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* Video Section */
.page-about__video-section .page-about__section-title,
.page-about__video-section .page-about__section-description {
  color: var(--page-about-secondary-color);
}

.page-about__video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  background: #000;
  margin-bottom: 30px;
  border-radius: 10px;
}

.page-about__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  cursor: pointer;
}

.page-about__video-cta {
  text-align: center;
  margin-top: 30px;
}

/* FAQ Section */
.page-about__faq-section .page-about__section-title {
  color: var(--page-about-primary-color);
}

.page-about__faq-section .page-about__section-title::after {
  background-color: var(--page-about-primary-color);
}

.page-about__faq-section .page-about__section-description {
  color: var(--page-about-text-color-light-bg);
}

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

.page-about__faq-item {
  background-color: var(--page-about-secondary-color);
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.2em;
  font-weight: bold;
  color: var(--page-about-primary-color);
  cursor: pointer;
  background-color: #f8f8f8;
  border-bottom: 1px solid #eee;
  transition: background-color 0.3s ease;
}

.page-about__faq-question:hover {
  background-color: #e8e8e8;
}

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

.page-about__faq-item.active .page-about__faq-toggle {
  transform: rotate(45deg);
}

.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-text-color-light-bg);
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 1000px !important; /* Ensure enough height for content */
  padding: 20px 25px;
}

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

.page-about__cta-section .page-about__section-title,
.page-about__cta-section .page-about__section-description {
  color: var(--page-about-secondary-color);
}

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

.page-about__btn-register {
  background-color: var(--page-about-register-color);
  color: var(--page-about-register-login-font-color);
}

.page-about__btn-register:hover {
  background-color: #a30606;
}

.page-about__btn-login {
  background-color: transparent;
  color: var(--page-about-secondary-color);
  border-color: var(--page-about-secondary-color);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .page-about__hero-title {
    font-size: 2.8em;
  }
  .page-about__hero-description {
    font-size: 1.1em;
  }
  .page-about__section-title {
    font-size: 2em;
  }
  .page-about__sub-title {
    font-size: 1.5em;
  }
  .page-about__content-grid {
    grid-template-columns: 1fr;
  }
  .page-about__content-grid--reverse .page-about__image-block {
    order: initial;
  }
  .page-about__content-grid--reverse .page-about__text-block {
    order: initial;
  }
}

@media (max-width: 768px) {
  .page-about {
    font-size: 16px;
    line-height: 1.6;
  }
  .page-about__hero-section {
    height: 500px;
    padding-top: var(--header-offset, 120px) !important; /* Mobile header offset */
  }
  .page-about__hero-title {
    font-size: 2.2em;
  }
  .page-about__hero-description {
    font-size: 1em;
  }
  .page-about__hero-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .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__cta-buttons,
  .page-about__hero-buttons {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
    flex-direction: column !important;
    gap: 15px !important;
  }
  .page-about__section-title {
    font-size: 1.8em;
  }
  .page-about__section-description {
    font-size: 0.9em;
  }
  .page-about__sub-title {
    font-size: 1.3em;
  }
  .page-about__dark-bg,
  .page-about__light-bg {
    padding: 60px 0;
  }
  .page-about__container {
    padding: 0 15px;
  }

  /* Image responsiveness */
  .page-about img {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__image-block {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  /* Video responsiveness */
  .page-about video,
  .page-about__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .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;
  }
  .page-about__video-section {
    padding-top: var(--header-offset, 120px) !important; /* Video section padding top for mobile */
  }

  /* FAQ specific mobile adjustments */
  .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;
  }
}