.page-tin-tuc {
  font-family: 'Arial', sans-serif;
  color: #1F2D3D; /* Text Main */
  background-color: #F4F7FB; /* Background */
  line-height: 1.6;
}

.page-tin-tuc__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-bottom: 40px;
  padding-top: 10px; /* Small top padding, header offset handled by body */
  overflow: hidden;
}

.page-tin-tuc__hero-image-wrap {
  width: 100%;
  max-height: 500px;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.page-tin-tuc__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: brightness(0.7); /* Slightly dim the image for text readability */
}

.page-tin-tuc__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin-top: -200px; /* Pull content up over the image slightly */
  padding: 0 20px;
  background: rgba(255, 255, 255, 0.95); /* Semi-transparent white background for text */
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.page-tin-tuc__main-title {
  font-size: clamp(2.2rem, 4vw, 3rem);
  color: #2F6BFF; /* Main Color */
  margin-bottom: 15px;
  line-height: 1.2;
  font-weight: 700;
}

.page-tin-tuc__description {
  font-size: 1.1rem;
  color: #1F2D3D;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

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

.page-tin-tuc__btn-primary {
  background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%); /* Button Gradient */
  color: #ffffff;
  border: none;
}

.page-tin-tuc__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(47, 107, 255, 0.4);
}

.page-tin-tuc__btn-secondary {
  background: #ffffff; /* Card BG */
  color: #2F6BFF; /* Main Color */
  border: 2px solid #2F6BFF;
}

.page-tin-tuc__btn-secondary:hover {
  background: #2F6BFF;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(47, 107, 255, 0.4);
}

.page-tin-tuc__news-list-section {
  padding: 60px 0;
}

.page-tin-tuc__container {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-tin-tuc__section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  color: #2F6BFF; /* Main Color */
  text-align: center;
  margin-bottom: 15px;
  font-weight: 700;
}

.page-tin-tuc__section-subtitle {
  font-size: 1.1rem;
  color: #1F2D3D;
  text-align: center;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-tin-tuc__articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-tin-tuc__article-card {
  background: #ffffff; /* Card BG */
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #D6E2FF; /* Border */
}

.page-tin-tuc__article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.page-tin-tuc__article-image-wrap {
  width: 100%;
  height: 220px;
  overflow: hidden;
}

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

.page-tin-tuc__article-content {
  padding: 25px;
}

.page-tin-tuc__article-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.page-tin-tuc__article-title a {
  color: #1F2D3D; /* Text Main */
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-tin-tuc__article-title a:hover {
  color: #2F6BFF; /* Main Color */
}

.page-tin-tuc__article-meta {
  font-size: 0.9rem;
  color: #666666;
  margin-bottom: 15px;
}

.page-tin-tuc__article-excerpt {
  font-size: 1rem;
  color: #333333;
  margin-bottom: 20px;
}

.page-tin-tuc__read-more-btn {
  display: inline-block;
  padding: 10px 20px;
  background: #6FA3FF; /* Auxiliary Color */
  color: #ffffff;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-tin-tuc__read-more-btn:hover {
  background: #2F6BFF; /* Main Color */
}

.page-tin-tuc__view-all-news {
  text-align: center;
  margin-top: 20px;
}

.page-tin-tuc__cta-section {
  padding: 80px 0;
  background: #2F6BFF; /* Main Color */
  text-align: center;
  color: #ffffff;
}

.page-tin-tuc__cta-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 20px;
  font-weight: 700;
  color: #ffffff;
}

.page-tin-tuc__cta-description {
  font-size: 1.15rem;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: #f0f0f0;
}

/* --- Mobile Responsive Styles --- */
@media (max-width: 1024px) {
  .page-tin-tuc__hero-content {
    margin-top: -150px;
    padding: 25px;
  }

  .page-tin-tuc__main-title {
    font-size: clamp(2rem, 4.5vw, 2.8rem);
  }

  .page-tin-tuc__description {
    font-size: 1rem;
  }

  .page-tin-tuc__section-title {
    font-size: clamp(1.6rem, 3.8vw, 2.2rem);
  }

  .page-tin-tuc__cta-title {
    font-size: clamp(1.8rem, 4.5vw, 2.8rem);
  }
}

@media (max-width: 768px) {
  /* 1. Top section title + Dual CTAs */
  .page-tin-tuc__hero-section {
    padding-top: 10px !important; /* Small top padding */
    padding-bottom: 30px;
  }

  .page-tin-tuc__hero-image-wrap {
    max-height: 300px;
  }

  .page-tin-tuc__hero-content {
    margin-top: -100px; /* Adjust pull-up for smaller screens */
    padding: 20px;
  }

  .page-tin-tuc__main-title {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
    margin-bottom: 10px;
  }

  .page-tin-tuc__description {
    font-size: 0.95rem;
    margin-bottom: 20px;
  }

  .page-tin-tuc__cta-buttons {
    flex-direction: column;
    gap: 10px;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-tin-tuc__btn-primary,
  .page-tin-tuc__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 0.95rem;
  }

  /* 2. Single-column long text containers */
  .page-tin-tuc__container {
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-tin-tuc__news-list-section {
    padding: 40px 0;
  }

  .page-tin-tuc__section-title {
    font-size: clamp(1.5rem, 5vw, 2rem);
    margin-bottom: 10px;
  }

  .page-tin-tuc__section-subtitle {
    font-size: 0.95rem;
    margin-bottom: 30px;
  }

  .page-tin-tuc__articles-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .page-tin-tuc__article-image-wrap {
    height: 180px;
  }

  .page-tin-tuc__article-content {
    padding: 20px;
  }

  .page-tin-tuc__article-title {
    font-size: 1.2rem;
  }

  .page-tin-tuc__article-meta {
    font-size: 0.85rem;
  }

  .page-tin-tuc__article-excerpt {
    font-size: 0.9rem;
  }

  .page-tin-tuc__read-more-btn {
    padding: 8px 15px;
    font-size: 0.9rem;
  }

  /* 3. General images and figures */
  .page-tin-tuc img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-tin-tuc__hero-image {
    filter: brightness(0.6) !important; /* Slightly darker for mobile text */
  }

  /* 4. Buttons and button containers (already covered above in cta-buttons) */
  /* 5. Registration tutorial and FAQ blocks (not present on this news page) */

  .page-tin-tuc__cta-section {
    padding: 50px 0;
  }

  .page-tin-tuc__cta-title {
    font-size: clamp(1.6rem, 6vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-tin-tuc__cta-description {
    font-size: 1rem;
    margin-bottom: 30px;
    padding: 0 15px;
  }
}

@media (max-width: 480px) {
  .page-tin-tuc__hero-content {
    margin-top: -80px;
    padding: 15px;
  }

  .page-tin-tuc__main-title {
    font-size: clamp(1.6rem, 7vw, 2.2rem);
  }

  .page-tin-tuc__description {
    font-size: 0.9rem;
  }

  .page-tin-tuc__btn-primary,
  .page-tin-tuc__btn-secondary {
    font-size: 0.85rem;
    padding: 10px 15px;
  }

  .page-tin-tuc__article-image-wrap {
    height: 160px;
  }

  .page-tin-tuc__article-title {
    font-size: 1.1rem;
  }

  .page-tin-tuc__article-excerpt {
    font-size: 0.85rem;
  }

  .page-tin-tuc__read-more-btn {
    font-size: 0.8rem;
    padding: 6px 12px;
  }

  .page-tin-tuc__cta-title {
    font-size: clamp(1.4rem, 7vw, 2.2rem);
  }

  .page-tin-tuc__cta-description {
    font-size: 0.9rem;
  }
}