:root {
    --primary-blue: #1e3a8a;
    --dark-blue: #1e293b;
    --light-blue: #3b82f6;
    --accent-yellow: #fbbf24;
    --light-yellow: #fef3c7;
    --text-gray: #64748b;
    --border-gray: #e2e8f0;
    --bg-white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.blog-container {
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 40px;
    margin: 40px auto;
    max-width: 900px;
}

.font-weight-high {
    font-weight: 480;
}

.blog-title {
    font-size: 2.25rem;
    font-weight: 550;
    color: var(--primary-blue);
    margin-bottom: 24px;
    line-height: 1.3;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-gray);
}

.blog-time {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-gray);
    font-size: 0.95rem;
    font-weight: 500;
}

.blog-time i {
    color: var(--light-blue);
    font-size: 1rem;
}

.blog-author {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.95rem;
}

.blog-description {
    font-size: 1.15rem;
    color: var(--text-gray);
    margin-bottom: 40px;
    padding: 20px;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    border-radius: 12px;
    border-left: 4px solid var(--accent-yellow);
    font-style: italic;
}

.blog-content {
    margin-bottom: 48px;
    color: var(--dark-blue);
}

.blog-content h3 {
    color: var(--primary-blue);
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 16px;
    position: relative;
    padding-left: 16px;
}

.blog-content h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--accent-yellow);
    border-radius: 2px;
}

.blog-content h2 {
    color: var(--primary-blue);
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 16px;
    position: relative;
    padding-left: 16px;
}

.blog-content h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--accent-yellow);
    border-radius: 2px;
}

.blog-content p a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    padding: 2px 4px;
    border-radius: 4px;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, transparent 0%, var(--light-yellow) 0%);
    background-size: 0% 100%;
    background-repeat: no-repeat;
    background-position: left center;
}

.blog-content p a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--accent-yellow) 100%);
    transition: width 0.3s ease;
}

.blog-content p a:hover {
    color: var(--light-blue);
    background-size: 100% 100%;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.2);
}

.blog-content p a:hover::after {
    width: 100%;
}

.blog-content p a:active {
    transform: translateY(0);
    transition: transform 0.1s ease;
}

.blog-content h1 {
    color: var(--primary-blue);
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 16px;
    position: relative;
    padding-left: 16px;
}

.blog-content h1::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 100%;
    background: var(--accent-yellow);
    border-radius: 2px;
}

.blog-content ul {
    list-style-type: disc!important; 
}

.blog-content ul li {
    list-style-type: disc!important;
    font-size: 1.07rem;
}

.blog-content ol {
    list-style-type: decimal!important; 
}

.blog-content ol li {
    list-style-type: decimal!important;
    font-size: 1.07rem;
}

.blog-content blockquote {
  position: relative;
  font-style: italic;
  padding: 1.2rem 2rem;
  margin: 1.5rem 0;
  border-left: 4px solid #ccc;
  color: #333;
}

.blog-content blockquote::before,
.blog-content blockquote::after {
  font-size: 2rem;
  color: #ffd000;
  position: absolute;
}

.blog-content blockquote::before {
  content: "“";
  top: 0;
  left: 10px;
}

.blog-content blockquote::after {
  content: "”";
  bottom: 0;
  right: 10px;
}

.blog-content p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    font-weight: 460;
}

.blog-content ul {
    margin-bottom: 24px;
    padding-left: 24px;
}

.blog-content li {
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-gray);
}

.meta-section {
    border-top: 2px solid var(--border-gray);
    padding-top: 32px;
}

.meta-item {
    background: var(--bg-white);
    border: 2px solid var(--border-gray);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.meta-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--accent-yellow) 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.meta-item:hover {
    border-color: var(--light-blue);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15);
    transform: translateY(-2px);
}

.meta-item:hover::before {
    transform: scaleX(1);
}

.meta-label {
    font-weight: 600;
    color: var(--primary-blue);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.meta-content {
    color: var(--text-gray);
    font-size: 1rem;
    line-height: 1.6;
    font-weight: 580;
}

.highlight {
    background: var(--light-yellow);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--primary-blue);
    font-weight: 500;
}

.quote-box {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    color: white;
    padding: 24px;
    border-radius: 12px;
    margin: 32px 0;
    position: relative;
    box-shadow: var(--shadow);
}

.quote-box::before {
    content: '"';
    font-size: 4rem;
    position: absolute;
    top: -10px;
    left: 20px;
    color: var(--accent-yellow);
    font-weight: bold;
    opacity: 0.7;
}

.quote-text {
    font-size: 1.1rem;
    font-style: italic;
    margin-bottom: 16px;
    padding-left: 40px;
}

.quote-author {
    text-align: right;
    font-weight: 600;
    color: var(--accent-yellow);
}

figure.image {
  display: table;
  margin-left: auto;
  margin-right: auto;
  text-align: center; /* Căn giữa nội dung bên trong như figcaption */
}

figure.image figcaption {
  margin-top: 0.3rem; 
  font-style: italic; /* tuỳ ý */
  text-align: center; /* đảm bảo caption cũng căn giữa */
}

figure.image.image-style-side {
  display: table;
  margin-left: auto;
  margin-right: 0;
  text-align: right;
}

figure.image.image-style-side img {
  display: block;
  margin-left: auto;
  margin-right: 0;
}

figure.image.image-style-side figcaption {
  text-align: right;
  font-style: italic;
  margin-top: 0.5rem;
}


@media (max-width: 768px) {
    .blog-container {
        padding: 24px;
        margin: 20px;
    }

    .blog-title {
        font-size: 1.8rem;
    }

    .blog-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .blog-description {
        font-size: 1rem;
        padding: 16px;
    }
}
/* ===================== PDF Viewer ===================== */
.pdf-viewer-wrapper {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 24px 0;
}

.pdf-iframe {
  width: 100%;
  height: 80vh;
  min-height: 600px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  background: #f8f9fa;
}

.pdf-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.pdf-download-btn,
.pdf-open-btn {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
}

.pdf-download-btn {
  background-color: #1a56db;
  color: #ffffff;
  border: 2px solid #1a56db;
}

.pdf-download-btn:hover {
  background-color: #1e429f;
  border-color: #1e429f;
  color: #ffffff;
}

.pdf-open-btn {
  background-color: transparent;
  color: #1a56db;
  border: 2px solid #1a56db;
}

.pdf-open-btn:hover {
  background-color: #e8f0fe;
  color: #1e429f;
}

@media (max-width: 768px) {
  .pdf-iframe {
    height: 60vh;
    min-height: 400px;
  }

  .pdf-actions {
    flex-direction: column;
  }

  .pdf-download-btn,
  .pdf-open-btn {
    justify-content: center;
  }
}