/* Article-specific styles for UsefulAI Blog */

/* Article Layout */
.article-content {
    font-family: 'Inter', sans-serif;
    line-height: 1.8;
    color: var(--charcoal);
}

/* Typography Hierarchy */
.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    color: var(--charcoal);
    margin-top: 2rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.article-content h1 {
    font-size: 2.5rem;
    margin-top: 3rem;
}

.article-content h2 {
    font-size: 2rem;
    margin-top: 2.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--purple-primary);
    background: linear-gradient(135deg, var(--purple-primary), var(--purple-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.article-content h3 {
    font-size: 1.5rem;
    color: var(--purple-primary);
}

.article-content h4 {
    font-size: 1.25rem;
    color: var(--purple-dark);
}

.article-content h5,
.article-content h6 {
    font-size: 1.125rem;
    color: var(--charcoal);
}

/* Paragraphs and Text */
.article-content p {
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
    line-height: 1.8;
}

.article-content p:first-of-type {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--gray-medium);
}

/* Links */
.article-content a {
    color: var(--purple-primary);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
    transition: all 0.3s ease;
}

.article-content a:hover {
    color: var(--purple-dark);
    text-decoration-color: var(--purple-dark);
    background-color: rgba(139, 92, 246, 0.1);
    padding: 2px 4px;
    border-radius: 4px;
}

/* Lists */
.article-content ul,
.article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.article-content ul li,
.article-content ol li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

.article-content ul li {
    list-style-type: none;
    position: relative;
}

.article-content ul li::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 0.75rem;
    width: 6px;
    height: 6px;
    background: linear-gradient(135deg, var(--purple-primary), var(--purple-light));
    border-radius: 50%;
}

.article-content ol li {
    list-style-type: none;
    counter-increment: list-counter;
    position: relative;
}

.article-content ol {
    counter-reset: list-counter;
}

.article-content ol li::before {
    content: counter(list-counter);
    position: absolute;
    left: -2rem;
    top: 0;
    background: linear-gradient(135deg, var(--purple-primary), var(--purple-light));
    color: white;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
}

/* Blockquotes */
.article-content blockquote {
    margin: 2rem 0;
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.05), rgba(168, 85, 247, 0.05));
    border-left: 4px solid var(--purple-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    font-size: 1.25rem;
    line-height: 1.6;
    position: relative;
}

.article-content blockquote::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 10px;
    font-size: 4rem;
    color: var(--purple-primary);
    opacity: 0.3;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
}

.article-content blockquote p:last-child {
    margin-bottom: 0;
}

/* Code and Pre */
.article-content code {
    background-color: #f8f9fa;
    color: #e83e8c;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.9em;
    font-family: 'SFMono-Regular', 'Monaco', 'Inconsolata', 'Liberation Mono', 'Courier New', monospace;
}

.article-content pre {
    background-color: #2d3748;
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 2rem 0;
    line-height: 1.5;
    position: relative;
}

.article-content pre code {
    background: none;
    color: inherit;
    padding: 0;
    font-size: 0.9rem;
}

/* Tables */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.article-content th,
.article-content td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.article-content th {
    background: linear-gradient(135deg, var(--purple-primary), var(--purple-light));
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.article-content tbody tr:hover {
    background-color: rgba(139, 92, 246, 0.05);
}

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

.article-content figure {
    margin: 2rem 0;
    text-align: center;
}

.article-content figcaption {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-medium);
    font-style: italic;
}

/* Callout Boxes */
.callout {
    margin: 2rem 0;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border-left: 4px solid;
    position: relative;
}

.callout-info {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: #3b82f6;
    color: #1e40af;
}

.callout-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-color: #f59e0b;
    color: #92400e;
}

.callout-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: #10b981;
    color: #065f46;
}

.callout-error {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
    color: #991b1b;
}

.callout::before {
    position: absolute;
    top: 1rem;
    left: -2px;
    width: 4px;
    height: 2rem;
    content: '';
    background: linear-gradient(135deg, var(--purple-primary), var(--purple-light));
}

/* Table of Contents */
.toc-link {
    display: block;
    padding: 0.5rem 0;
    color: var(--gray-medium);
    text-decoration: none;
    border-left: 2px solid transparent;
    padding-left: 1rem;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.toc-link:hover {
    color: var(--purple-primary);
    border-left-color: var(--purple-primary);
    background-color: rgba(139, 92, 246, 0.05);
}

.toc-link.active {
    color: var(--purple-primary);
    border-left-color: var(--purple-primary);
    background-color: rgba(139, 92, 246, 0.1);
    font-weight: 600;
}

.toc-h2 { padding-left: 1rem; }
.toc-h3 { padding-left: 1.5rem; font-size: 0.85rem; }
.toc-h4 { padding-left: 2rem; font-size: 0.8rem; }

/* Reading Progress */
#progress-bar {
    transition: width 0.3s ease;
}

/* Social Share Buttons Enhanced */
.social-share-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.social-share-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* Author Social Links */
.author-social-link {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background-color: white;
    color: var(--purple-primary);
    border: 2px solid var(--purple-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.author-social-link:hover {
    background-color: var(--purple-primary);
    color: white;
    transform: translateY(-2px);
}

.author-social-link i {
    margin-right: 0.5rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .article-content h1 {
        font-size: 2rem;
    }
    
    .article-content h2 {
        font-size: 1.75rem;
    }
    
    .article-content h3 {
        font-size: 1.375rem;
    }
}

@media (max-width: 768px) {
    .article-content h1 {
        font-size: 1.75rem;
    }
    
    .article-content h2 {
        font-size: 1.5rem;
    }
    
    .article-content h3 {
        font-size: 1.25rem;
    }
    
    .article-content p {
        font-size: 1rem;
    }
    
    .article-content p:first-of-type {
        font-size: 1.125rem;
    }
    
    .article-content ul,
    .article-content ol {
        padding-left: 1.5rem;
    }
    
    .article-content blockquote {
        padding: 1rem 1.5rem;
        font-size: 1.125rem;
    }
    
    .article-content pre {
        padding: 1rem;
        font-size: 0.85rem;
    }
    
    .article-content table {
        font-size: 0.875rem;
    }
    
    .article-content th,
    .article-content td {
        padding: 0.75rem 0.5rem;
    }
    
    .callout {
        padding: 1rem;
    }
    
    .social-share-button {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
}