.page-tin-tuc {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #F3F8FF; /* Text Main */
  background-color: var(--deep-navy); /* Body background from shared.css */
}

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

.page-tin-tuc__top-section {
  padding-top: 10px; /* Small top padding, body handles --header-offset */
  padding-bottom: 40px;
  text-align: center;
  background: linear-gradient(180deg, #113B7A 0%, #08162B 100%);
}

.page-tin-tuc__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  color: #F3F8FF;
  margin-bottom: 15px;
  font-weight: bold;
  line-height: 1.2;
}

.page-tin-tuc__description {
  font-size: 1.1rem;
  color: #AFC4E8; /* Text Secondary */
  max-width: 800px;
  margin: 0 auto 30px auto;
}

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

.page-tin-tuc__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 25px;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-tin-tuc__btn--primary {
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(43, 115, 246, 0.4);
}

.page-tin-tuc__btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(43, 115, 246, 0.6);
}

.page-tin-tuc__btn--secondary {
  background: #10233F; /* Card BG */
  color: #F3F8FF;
  border: 1px solid #244D84; /* Border */
}

.page-tin-tuc__btn--secondary:hover {
  background: #1B3357; /* Divider */
  transform: translateY(-2px);
}

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

.page-tin-tuc__section-title {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  color: #F3F8FF;
  text-align: center;
  margin-bottom: 40px;
  font-weight: bold;
}

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

.page-tin-tuc__article-card {
  background: #10233F; /* Card BG */
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-tin-tuc__article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-tin-tuc__article-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.page-tin-tuc__article-figure {
  margin: 0;
  position: relative;
}

.page-tin-tuc__article-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-tin-tuc__article-category {
  position: absolute;
  top: 15px;
  left: 15px;
  background: #1D5FD1;
  color: #ffffff;
  padding: 5px 10px;
  border-radius: 5px;
  font-size: 0.85rem;
  font-weight: bold;
}

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

.page-tin-tuc__article-title {
  font-size: 1.4rem;
  color: #F3F8FF;
  margin-bottom: 10px;
  line-height: 1.3;
}

.page-tin-tuc__article-excerpt {
  font-size: 0.95rem;
  color: #AFC4E8;
  margin-bottom: 15px;
}

.page-tin-tuc__article-date {
  font-size: 0.85rem;
  color: #1D5FD1;
}

.page-tin-tuc__pagination {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 50px;
}

.page-tin-tuc__pagination-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #10233F;
  color: #AFC4E8;
  text-decoration: none;
  font-weight: bold;
  transition: background 0.3s ease, color 0.3s ease;
}

.page-tin-tuc__pagination-link:hover,
.page-tin-tuc__pagination-link--active {
  background: #1D5FD1;
  color: #ffffff;
}

.page-tin-tuc__promo-section {
  padding: 60px 0;
  background: #08162B;
}

.page-tin-tuc__promo-box {
  background: #10233F; /* Card BG */
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid #244D84;
}

.page-tin-tuc__promo-title {
  font-size: clamp(1.5rem, 2.5vw, 2.5rem);
  color: #F2C14E; /* Gold */
  margin-bottom: 20px;
  font-weight: bold;
}

.page-tin-tuc__promo-text {
  font-size: 1.1rem;
  color: #AFC4E8;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.page-tin-tuc__about-section .page-tin-tuc__section-title {
  margin-bottom: 30px;
}

.page-tin-tuc__about-section p {
  font-size: 1rem;
  color: #AFC4E8;
  margin-bottom: 20px;
}

.page-tin-tuc__about-section .page-tin-tuc__btn {
  margin-top: 20px;
}

/* --- Responsive Styles --- */

@media (max-width: 1024px) {
  .page-tin-tuc__main-title {
    font-size: clamp(2rem, 5vw, 3rem);
  }
  .page-tin-tuc__section-title {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
  }
  .page-tin-tuc__promo-title {
    font-size: clamp(1.3rem, 3.5vw, 2.2rem);
  }
  .page-tin-tuc__articles-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-tin-tuc__container {
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  /* 1. Top Section (Header/Hero) */
  .page-tin-tuc__top-section {
    padding-top: 10px !important; /* Small top padding */
    padding-bottom: 30px;
  }

  .page-tin-tuc__main-title {
    font-size: 2.2rem !important;
    margin-bottom: 10px;
  }

  .page-tin-tuc__description {
    font-size: 1rem !important;
    margin-bottom: 20px;
  }

  .page-tin-tuc__top-cta {
    flex-direction: column !important; /* Stack buttons vertically */
    gap: 10px;
  }

  /* 4. Buttons and Button Containers */
  .page-tin-tuc__btn {
    padding: 10px 20px !important;
    font-size: 1rem !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* 2. Single-column long text container / General Sections */
  .page-tin-tuc__article-list-section,
  .page-tin-tuc__promo-section,
  .page-tin-tuc__about-section {
    padding: 40px 0 !important;
  }

  .page-tin-tuc__section-title {
    font-size: 1.8rem !important;
    margin-bottom: 30px;
  }

  .page-tin-tuc__articles-grid {
    grid-template-columns: 1fr !important; /* Single column */
    gap: 25px;
  }

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

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

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

  .page-tin-tuc__promo-box {
    padding: 30px 20px !important;
  }

  .page-tin-tuc__promo-title {
    font-size: 1.6rem !important;
    margin-bottom: 15px;
  }

  .page-tin-tuc__promo-text {
    font-size: 1rem !important;
    margin-bottom: 25px;
  }

  .page-tin-tuc__about-section p {
    font-size: 0.95rem !important;
  }

  /* 3. Universal Images and Figures */
  .page-tin-tuc img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-tin-tuc__article-figure {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-tin-tuc__pagination {
    margin-top: 30px;
  }
}