/* style/blog.css */
/* body đã padding-top: var(--header-offset) từ shared.css; trang này không cần lặp lại để tránh double padding. */

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

.page-blog {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-main-color);
  background-color: var(--bg-page-color);
  line-height: 1.6;
}

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

.page-blog__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 0 60px 0;
  background-color: var(--bg-page-color);
}

.page-blog__hero-image-wrapper {
  width: 100%;
  overflow: hidden;
}

.page-blog__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-blog__hero-content {
  text-align: center;
  padding: 40px 20px;
  max-width: 900px;
  margin-top: -80px; /* Adjust to slightly overlap the image, but text is below */
  background-color: var(--bg-card-color);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  z-index: 1;
  position: relative;
  color: var(--text-main-color);
}

.page-blog__main-title {
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 20px;
  line-height: 1.2;
  max-width: 100%;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.05);
}

.page-blog__hero-description {
  font-size: 1.1em;
  margin-bottom: 30px;
  color: var(--text-main-color);
}

.page-blog__section-title {
  font-size: 2.2em;
  font-weight: 700;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 30px;
  line-height: 1.3;
}

.page-blog__section-title--light {
  color: var(--bg-card-color);
}

.page-blog__section-description {
  font-size: 1.1em;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px auto;
  color: var(--text-main-color);
}

.page-blog__section-description--light {
  color: rgba(255, 255, 255, 0.9);
}

.page-blog__cta-button {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  text-align: center;
  cursor: pointer;
  border: none;
}

.page-blog__cta-button--primary {
  background: var(--button-gradient);
  color: var(--bg-card-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-blog__cta-button--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  opacity: 0.9;
}

.page-blog__cta-button--secondary {
  background: var(--bg-card-color);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  margin-left: 15px;
}

.page-blog__cta-button--secondary:hover {
  background: var(--primary-color);
  color: var(--bg-card-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-blog__cta-button--small {
  padding: 10px 20px;
  font-size: 0.9em;
  margin-top: 15px;
}

.page-blog__text-block {
  margin-bottom: 20px;
  font-size: 1.05em;
  line-height: 1.7;
  color: var(--text-main-color);
}

.page-blog__text-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

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

.page-blog__text-link--light {
  color: var(--secondary-color);
}

.page-blog__introduction-section,
.page-blog__guides-section,
.page-blog__updates-section,
.page-blog__faq-section,
.page-blog__cta-final-section {
  padding: 60px 0;
  background-color: var(--bg-page-color);
}

.page-blog__featured-articles-section,
.page-blog__why-choose-us-section {
  padding: 80px 0;
  background-color: var(--primary-color);
  color: var(--bg-card-color);
}

.page-blog__dark-section {
  background-color: var(--primary-color);
  color: var(--bg-card-color);
}

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

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

.page-blog__article-card,
.page-blog__guide-card,
.page-blog__update-item,
.page-blog__card {
  background-color: var(--bg-card-color);
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--text-main-color);
  border: 1px solid var(--border-color);
}

.page-blog__article-card:hover,
.page-blog__guide-card:hover,
.page-blog__update-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

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

.page-blog__article-title {
  font-size: 1.4em;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
}

.page-blog__article-title a {
  color: var(--text-main-color);
  text-decoration: none;
}

.page-blog__article-title a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

.page-blog__article-meta {
  font-size: 0.9em;
  color: #777;
  margin-bottom: 15px;
}

.page-blog__article-excerpt {
  font-size: 1em;
  color: #555;
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-blog__read-more-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

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

.page-blog__arrow {
  margin-left: 8px;
  transition: transform 0.2s ease;
}

.page-blog__read-more-link:hover .page-blog__arrow {
  transform: translateX(5px);
}

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

.page-blog__guide-card,
.page-blog__update-item {
  padding: 30px;
}

.page-blog__guide-title,
.page-blog__update-title {
  font-size: 1.5em;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 15px;
  line-height: 1.3;
}

.page-blog__guide-text,
.page-blog__update-text {
  font-size: 1em;
  color: #555;
  line-height: 1.7;
  margin-bottom: 20px;
}

.page-blog__features-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  margin-top: 50px;
}

.page-blog__feature-item {
  text-align: center;
  padding: 25px;
  border-radius: 12px;
  background-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-blog__feature-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 5px var(--glow-color)); /* Glow effect for icons */
}

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

.page-blog__feature-title--light {
  color: var(--bg-card-color);
}

.page-blog__feature-description--light {
  color: rgba(255, 255, 255, 0.8);
}

.page-blog__faq-list {
  max-width: 900px;
  margin: 40px auto 0 auto;
}

.page-blog__faq-item {
  background-color: var(--bg-card-color);
  border-radius: 12px;
  margin-bottom: 15px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
}

.page-blog__faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1.1em;
  color: var(--text-main-color);
  background-color: #f9f9f9;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.3s ease;
}

.page-blog__faq-item summary:hover {
  background-color: #f0f0f0;
}

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

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

.page-blog__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: var(--primary-color);
}

.page-blog__faq-answer {
  padding: 20px 25px;
  font-size: 1em;
  color: #555;
  line-height: 1.7;
}

.page-blog__cta-final-section {
  text-align: center;
  padding: 80px 0;
  background: var(--button-gradient);
  color: var(--bg-card-color);
}

.page-blog__cta-final-section .page-blog__section-title {
  color: var(--bg-card-color);
}

.page-blog__cta-final-section .page-blog__section-description {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
}

.page-blog__cta-final-section .page-blog__cta-button--primary {
  background: var(--bg-card-color);
  color: var(--primary-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: none;
}

.page-blog__cta-final-section .page-blog__cta-button--primary:hover {
  background: #e0e0e0;
  color: var(--primary-color);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .page-blog__main-title {
    font-size: 2.5em;
  }
  .page-blog__section-title {
    font-size: 2em;
  }
  .page-blog__articles-grid,
  .page-blog__guides-grid,
  .page-blog__updates-grid,
  .page-blog__features-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-blog {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-blog__hero-content {
    margin-top: -60px;
    padding: 30px 15px;
    max-width: 90%;
  }

  .page-blog__main-title {
    font-size: 2em;
    margin-bottom: 15px;
  }

  .page-blog__hero-description {
    font-size: 1em;
    margin-bottom: 20px;
  }

  .page-blog__section-title {
    font-size: 1.8em;
    margin-bottom: 20px;
  }

  .page-blog__section-description {
    font-size: 1em;
    margin-bottom: 30px;
    padding: 0 15px;
  }

  .page-blog__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    margin: 10px 0 !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-blog__cta-button--secondary {
    margin-left: 0 !important;
  }

  .page-blog__articles-grid,
  .page-blog__guides-grid,
  .page-blog__updates-grid,
  .page-blog__features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 15px;
  }

  .page-blog__article-card,
  .page-blog__guide-card,
  .page-blog__update-item,
  .page-blog__card {
    padding: 0 !important; /* Reset card padding to handle inner content padding */
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-blog__article-image {
    height: 180px; /* Adjust image height for mobile */
  }

  .page-blog__article-content {
    padding: 20px;
  }

  .page-blog__guide-card,
  .page-blog__update-item {
    padding: 20px !important;
  }

  .page-blog__features-grid {
    padding: 0 15px;
  }

  .page-blog__feature-item {
    padding: 20px;
  }

  .page-blog__faq-list {
    padding: 0 15px;
  }

  .page-blog__faq-item summary {
    font-size: 1em;
    padding: 15px 20px;
  }

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

  /* Ensure all images are responsive and don't overflow */
  .page-blog img {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-blog__section,
  .page-blog__card,
  .page-blog__container,
  .page-blog__hero-section,
  .page-blog__introduction-section,
  .page-blog__featured-articles-section,
  .page-blog__guides-section,
  .page-blog__updates-section,
  .page-blog__why-choose-us-section,
  .page-blog__faq-section,
  .page-blog__cta-final-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-blog__hero-section { /* Override padding for hero section specifically */
    padding-left: 0;
    padding-right: 0;
  }

  .page-blog__cta-buttons,
  .page-blog__button-group,
  .page-blog__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;
    display: flex;
    flex-direction: column; /* Stack buttons vertically */
  }
}

@media (max-width: 480px) {
  .page-blog__main-title {
    font-size: 1.8em;
  }
  .page-blog__section-title {
    font-size: 1.5em;
  }
}