:root {
     --primary-color: #4f46e5;
     --primary-hover: #4338ca;
     --secondary-color: #6b7280;
     --accent-color: #10b981;
     --light-bg: #f9fafb;
     --dark-bg: #1f2937;
     --text-primary: #111827;
     --text-secondary: #374151;
     --border-color: #e5e7eb;
     --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
     --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
     --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
     --radius: 8px;
     --transition: all 0.3s ease;
 }

 body {
     font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
     color: var(--text-primary);
     line-height: 1.6;
     background-color: #fdfdfd;
 }

 .article-share {
     display: flex;
     align-items: center;
     gap: 0.75rem;
 }

 .share-icon {
     width: 36px;
     height: 36px;
     border-radius: 50%;
     background-color: #f1f1f1;
     display: flex;
     justify-content: center;
     align-items: center;
     transition: all 0.3s ease;
 }

 .share-icon:hover {
     background-color: #2a9d8f;
     color: #fff;
     transform: translateY(-2px);
 }

 /* Hero Image with Parallax Effect */
 .hero-image {
     width: 100%;
     height: 70vh;
     max-height: 700px;
     overflow: hidden;
     position: relative;
     margin-bottom: 3rem;
 }

 .hero-image img {
     width: 100%;
     height: 100%;
     object-fit: cover;
     object-position: center;
     transition: transform 0.3s ease-out;
     transform: scale(1.05);
 }

 .hero-image:hover img {
     transform: scale(1);
 }

 .hero-overlay {
     position: absolute;
     bottom: 0;
     left: 0;
     right: 0;
     background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
     padding: 3rem 0 1.5rem;
     color: white;
 }

 /* Article Content */
 .article-container {
     max-width: 800px;
     margin: 0 auto;
     padding: 0 1.5rem;
 }

 .article-header {
     margin-bottom: 2.5rem;
 }

 .article-title {
     font-size: 2.5rem;
     font-weight: 800;
     line-height: 1.2;
     margin-bottom: 1rem;
     color: var(--text-primary);
 }

 .article-meta {
     display: flex;
     align-items: center;
     gap: 1rem;
     margin-bottom: 1.5rem;
     flex-wrap: wrap;
 }

 .author-avatar {
     width: 48px;
     height: 48px;
     border-radius: 50%;
     object-fit: cover;
     border: 2px solid white;
     box-shadow: var(--shadow-md);
 }

 .author-info {
     display: flex;
     flex-direction: column;
 }

 .author-name {
     font-weight: 600;
     color: var(--text-primary);
 }

 .article-date {
     color: var(--secondary-color);
     font-size: 0.875rem;
 }

 .article-tags {
     display: flex;
     gap: 0.5rem;
     margin-top: 1rem;
 }

 .tag {
     background: var(--light-bg);
     padding: 0.25rem 0.75rem;
     border-radius: 20px;
     font-size: 0.75rem;
     color: var(--secondary-color);
     transition: var(--transition);
 }

 .tag:hover {
     background: var(--primary-color);
     color: white;
 }

 /* Article Content Styling */
 .article-content {
     font-size: 1.125rem;
     color: var(--text-secondary);
     margin-bottom: 3rem;
 }

 .article-content h2 {
     font-size: 1.75rem;
     font-weight: 700;
     margin: 2rem 0 1rem;
     color: var(--text-primary);
 }

 .article-content h3 {
     font-size: 1.5rem;
     font-weight: 600;
     margin: 1.5rem 0 1rem;
     color: var(--text-primary);
 }

 .article-content p {
     margin-bottom: 1.5rem;
 }

 .article-content blockquote {
     border-left: 4px solid var(--primary-color);
     padding-left: 1.5rem;
     margin: 2rem 0;
     font-style: italic;
     color: var(--secondary-color);
 }

 .article-content img {
     max-width: 100%;
     height: auto;
     border-radius: var(--radius);
     margin: 2rem 0;
     box-shadow: var(--shadow-md);
 }

 /* Comments Section */
 .comments-section {
     margin: 4rem 0;
 }

 .section-title {
     font-size: 1.5rem;
     font-weight: 700;
     margin-bottom: 2rem;
     position: relative;
     padding-bottom: 0.75rem;
 }

 .section-title::after {
     content: '';
     position: absolute;
     bottom: 0;
     left: 0;
     width: 60px;
     height: 3px;
     background: var(--primary-color);
     border-radius: 3px;
 }

 .comment-list {
     margin-bottom: 3rem;
 }

 .comment-item {
     background: white;
     border-radius: var(--radius);
     padding: 1.5rem;
     margin-bottom: 1.5rem;
     box-shadow: var(--shadow-sm);
     border: 1px solid var(--border-color);
     transition: var(--transition);
 }

 .comment-item:hover {
     box-shadow: var(--shadow-md);
 }

 .comment-header {
     display: flex;
     align-items: center;
     margin-bottom: 1rem;
     gap: 0.75rem;
 }

 .comment-avatar {
     width: 40px;
     height: 40px;
     border-radius: 50%;
     object-fit: cover;
 }

 .comment-meta {
     flex: 1;
 }

 .comment-author {
     font-weight: 600;
     color: var(--text-primary);
 }

 .comment-date {
     font-size: 0.75rem;
     color: var(--secondary-color);
 }

 .comment-content {
     color: var(--text-secondary);
     margin-bottom: 1rem;
     line-height: 1.6;
 }

 .reply-btn {
     background: transparent;
     border: none;
     color: var(--primary-color);
     font-size: 0.875rem;
     font-weight: 500;
     cursor: pointer;
     display: inline-flex;
     align-items: center;
     gap: 0.25rem;
     padding: 0.25rem 0.5rem;
     border-radius: var(--radius);
     transition: var(--transition);
 }

 .reply-btn:hover {
     background: var(--light-bg);
 }

 .reply-item {
     margin-left: 3rem;
     padding-left: 1.5rem;
     border-left: 2px solid var(--border-color);
 }

 /* Forms */
 .comment-form,
 .reply-form {
     background: white;
     border-radius: var(--radius);
     padding: 2rem;
     box-shadow: var(--shadow-sm);
     border: 1px solid var(--border-color);
     margin-top: 1.5rem;
 }

 .form-label {
     font-weight: 500;
     color: var(--text-primary);
     margin-bottom: 0.5rem;
     display: block;
 }

 .form-control {
     width: 100%;
     padding: 0.75rem 1rem;
     border: 1px solid var(--border-color);
     border-radius: var(--radius);
     font-size: 1rem;
     transition: var(--transition);
     margin-bottom: 1.25rem;
 }

 .form-control:focus {
     outline: none;
     border-color: var(--primary-color);
     box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
 }

 textarea.form-control {
     min-height: 120px;
     resize: vertical;
 }

 .form-check {
     display: flex;
     align-items: center;
     gap: 0.5rem;
     margin-bottom: 1.5rem;
 }

 .form-check-input {
     width: 18px;
     height: 18px;
     accent-color: var(--primary-color);
 }

 .form-check-label {
     font-size: 0.875rem;
     color: var(--text-secondary);
 }

 .btn {
     display: inline-flex;
     align-items: center;
     justify-content: center;
     padding: 0.75rem 1.5rem;
     font-weight: 500;
     border-radius: var(--radius);
     cursor: pointer;
     transition: var(--transition);
     border: none;
     font-size: 1rem;
     gap: 0.5rem;
 }

 .btn-primary {
     background: var(--primary-color);
     color: white;
 }

 .btn-primary:hover {
     background: var(--primary-hover);
     transform: translateY(-2px);
 }

 .btn-outline {
     background: transparent;
     color: var(--secondary-color);
     border: 1px solid var(--border-color);
 }

 .btn-outline:hover {
     background: var(--light-bg);
 }

 .captcha {
     margin: 1.5rem 0;
     padding: 1rem;
     background: var(--light-bg);
     border-radius: var(--radius);
 }

 /* Empty State */
 .empty-state {
     text-align: center;
     padding: 2rem;
     background: var(--light-bg);
     border-radius: var(--radius);
     margin: 2rem 0;
 }

 .empty-state-icon {
     font-size: 3rem;
     margin-bottom: 1rem;
     color: var(--secondary-color);
 }

 /* Responsive Design */
 @media (max-width: 768px) {
     .hero-image {
         height: 50vh;
     }

     .article-title {
         font-size: 2rem;
     }

     .article-meta {
         flex-direction: column;
         align-items: flex-start;
         gap: 0.75rem;
     }

     .reply-item {
         margin-left: 1rem;
         padding-left: 1rem;
     }

     .comment-form,
     .reply-form {
         padding: 1.5rem;
     }
 }