/* style/blog.css */
:root {
  --primary-color: #2F6BFF;
  --secondary-color: #6FA3FF;
  --gradient-button: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
  --card-bg-color: #FFFFFF;
  --background-color-page: #F4F7FB;
  --text-main-color: #1F2D3D;
  --text-black-color: #000000;
  --border-color: #D6E2FF;
  --glow-color: #A5C4FF;
}

.page-blog {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main-color); /* Default text color for light backgrounds */
  background-color: var(--background-color-page); /* Default background color for the page content */
}

.page-blog__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
  padding-top: 10px; /* Small top padding, body handles --header-offset */
  text-align: center;
  color: #ffffff;
  overflow: hidden;
}

.page-blog__hero-image {
  width: 100%;
  height: auto;
  max-height: 600px; /* Adjust as needed */
  object-fit: cover;
  position: relative;
  z-index: 1;
  border-radius: 12px;
}

.page-blog__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin-top: 40px;
}

.page-blog__main-title {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #ffffff;
}

.page-blog__lead-text {
  font-size: 1.15rem;
  margin-bottom: 30px;
  color: #f0f0f0;
}

.page-blog__cta-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-blog__btn-primary,
.page-blog__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  max-width: 100%;
}

.page-blog__btn-primary {
  background: var(--gradient-button);
  color: #ffffff;
  border: 2px solid transparent;
}

.page-blog__btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-blog__btn-secondary {
  background: #ffffff;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.page-blog__btn-secondary:hover {
  background: var(--primary-color);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

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

.page-blog__section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 30px;
  text-align: center;
  color: var(--text-main-color);
}

.page-blog__intro-section,
.page-blog__why-trust-section,
.page-blog__categories-section,
.page-blog__benefits-section,
.page-blog__faq-section,
.page-blog__cta-section {
  padding: 80px 0;
}

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

.page-blog__image-content {
  width: 100%;
  height: auto;
  display: block;
  margin: 30px auto;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  min-width: 200px;
  min-height: 200px;
}

.page-blog__dark-bg {
  background-color: var(--primary-color);
  color: #ffffff;
}

.page-blog__light-bg {
  background-color: var(--background-color-page);
  color: var(--text-main-color);
}

.page-blog__background-secondary {
  background-color: var(--secondary-color);
  color: #ffffff;
}

.page-blog__background-primary {
  background: var(--gradient-button);
  color: #ffffff;
}

/* Ensure text contrast for dark sections */
.page-blog__dark-section .page-blog__section-title,
.page-blog__dark-section .page-blog__text-block,
.page-blog__dark-section .page-blog__benefits-item {
  color: #ffffff;
}

.page-blog__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-blog__feature-item {
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  text-align: center;
  background-color: var(--card-bg-color);
  color: var(--text-main-color);
}

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

.page-blog__articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-blog__article-card {
  background-color: var(--card-bg-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.page-blog__article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.page-blog__card-image {
  width: 100%;
  height: 220px; /* Fixed height for consistency */
  object-fit: cover;
  display: block;
  min-width: 200px;
  min-height: 200px;
}

.page-blog__card-content {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.page-blog__card-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.3;
}

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

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

.page-blog__card-description {
  font-size: 0.95rem;
  color: #555555;
  margin-bottom: 15px;
  flex-grow: 1;
}

.page-blog__card-link {
  display: inline-block;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  margin-top: auto; /* Push to bottom */
}

.page-blog__card-link:hover {
  text-decoration: underline;
}

.page-blog__article-date {
  font-size: 0.85rem;
  color: #888888;
  margin-top: 10px;
  display: block;
}

.page-blog__view-all-button-container {
  text-align: center;
  margin-top: 50px;
}

.page-blog__benefits-list {
  list-style: none;
  padding: 0;
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.page-blog__benefits-item {
  background-color: rgba(255, 255, 255, 0.15); /* Slightly transparent white for dark bg */
  padding: 20px;
  border-radius: 8px;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 15px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-blog__benefits-item::before {
  content: '✔';
  color: #ffffff;
  font-weight: bold;
  font-size: 1.2rem;
}

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

.page-blog__faq-item {
  margin-bottom: 15px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  background-color: var(--card-bg-color);
  color: var(--text-main-color);
}

.page-blog__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.15rem;
  font-weight: 600;
  cursor: pointer;
  background-color: #ffffff;
  color: var(--text-main-color);
  transition: background-color 0.3s ease;
  list-style: none; /* For details/summary */
}

.page-blog__faq-item summary::-webkit-details-marker {
  display: none;
}

.page-blog__faq-item summary {
  list-style: none;
}

.page-blog__faq-question:hover {
  background-color: #f5f5f5;
}

.page-blog__faq-toggle {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

.page-blog__faq-answer {
  padding: 0 25px 20px;
  font-size: 1rem;
  color: #555555;
}

.page-blog__faq-item[open] .page-blog__faq-question {
  background-color: #f5f5f5;
}

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

/* Responsive adjustments */
@media (max-width: 992px) {
  .page-blog__hero-content {
    margin-top: 30px;
  }
  .page-blog__hero-image {
    max-height: 500px;
  }
  .page-blog__main-title {
    font-size: 2.5rem;
  }
  .page-blog__lead-text {
    font-size: 1.05rem;
  }
  .page-blog__section-title {
    font-size: 2rem;
  }
  .page-blog__features-grid,
  .page-blog__articles-grid,
  .page-blog__benefits-list {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-blog__hero-section {
    padding: 40px 15px;
    padding-top: 10px !important;
  }
  .page-blog__hero-image {
    max-height: 400px;
  }
  .page-blog__main-title {
    font-size: 2rem;
  }
  .page-blog__lead-text {
    font-size: 1rem;
  }
  .page-blog__cta-buttons {
    flex-direction: column;
    gap: 10px;
  }
  .page-blog__btn-primary,
  .page-blog__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
  }
  .page-blog__intro-section,
  .page-blog__why-trust-section,
  .page-blog__categories-section,
  .page-blog__benefits-section,
  .page-blog__faq-section,
  .page-blog__cta-section {
    padding: 50px 0;
  }
  .page-blog__container {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-blog__text-block {
    font-size: 0.95rem;
  }
  .page-blog img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    min-width: 200px !important;
    min-height: 200px !important;
  }
  .page-blog__section, .page-blog__card, .page-blog__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-blog__video-section {
    padding-top: 10px !important; /* body đã đảm nhiệm --header-offset */
  }
  .page-blog video,
  .page-blog__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-blog__video-section,
  .page-blog__video-container,
  .page-blog__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
  .page-blog__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-blog__faq-question {
    font-size: 1rem;
    padding: 15px 20px;
  }
  .page-blog__faq-answer {
    padding: 0 20px 15px;
  }
}

@media (max-width: 480px) {
  .page-blog__main-title {
    font-size: 1.8rem;
  }
  .page-blog__section-title {
    font-size: 1.6rem;
  }
  .page-blog__card-title {
    font-size: 1.1rem;
  }
  .page-blog__card-image {
    height: 180px;
  }
}