/* ============================================
   Blog Article Styles
   ============================================ */

/* Article Header */
.article-header {
    padding: calc(100px + var(--space-3xl)) 0 var(--space-3xl);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 500;
    color: var(--accent-primary);
    margin-bottom: var(--space-xl);
    transition: gap var(--transition-fast);
}

.back-link:hover {
    gap: var(--space-md);
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.article-category {
    font-weight: 600;
    color: var(--accent-primary);
    padding: var(--space-xs) var(--space-md);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
}

.article-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--space-lg);
}

.article-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: var(--space-xl);
}

.article-author {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

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

.author-name {
    font-weight: 600;
}

.author-title {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Article Content */
.article-content {
    padding: var(--space-3xl) 0;
}

.article-content .container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

/* Table of Contents */
.toc {
    position: sticky;
    top: 100px;
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
}

.toc h4 {
    font-size: 0.875rem;
    margin-bottom: var(--space-md);
    color: var(--text-muted);
}

.toc ul {
    list-style: none;
}

.toc li {
    margin-bottom: var(--space-sm);
}

.toc a {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    display: block;
    padding: var(--space-xs) 0;
}

.toc a:hover {
    color: var(--accent-primary);
}

.toc a.active {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Content Body */
.content-body {
    max-width: 720px;
}

.content-body p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.content-body .lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
}

.content-body h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: var(--space-3xl);
    margin-bottom: var(--space-lg);
    scroll-margin-top: 100px;
}

.content-body h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.content-body ol,
.content-body ul {
    margin-bottom: var(--space-xl);
    padding-left: var(--space-xl);
}

.content-body li {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.content-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.content-body code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 0.2em 0.4em;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
}

/* Code Blocks */
.code-block {
    margin-bottom: var(--space-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.code-block .code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.code-language {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Code copy button styles */
.code-copy-btn {
    background: var(--bg-primary) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary) !important;
}

.code-copy-btn:hover {
    background: var(--bg-secondary) !important;
    border-color: var(--accent-primary) !important;
}

[data-theme="dark"] .code-copy-btn {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

.code-block pre {
    margin: 0;
    padding: var(--space-lg);
    overflow-x: auto;
}

.code-block code {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--text-primary);
    background: none;
    padding: 0;
}

/* Blockquotes */
.highlight-quote {
    margin: var(--space-xl) 0;
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border-left: 4px solid var(--accent-primary);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.highlight-quote p {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.highlight-quote cite {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: normal;
}

/* Callouts */
.callout {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.callout-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.callout-content strong {
    display: block;
    margin-bottom: var(--space-xs);
}

.callout-content p {
    margin: 0;
    font-size: 1rem;
}

.callout-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
}

.callout-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
}

.callout-info {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
}

/* Lessons Grid */
.lessons-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin: var(--space-xl) 0;
}

.lesson-card {
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.lesson-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.lesson-icon {
    font-size: 1.5rem;
    display: block;
    margin-bottom: var(--space-sm);
}

.lesson-card h4 {
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.lesson-card p {
    font-size: 0.875rem;
    margin: 0;
}

/* Article Divider */
.article-divider {
    border: none;
    height: 1px;
    background: var(--border-color);
    margin: var(--space-3xl) 0;
}

/* Article Reactions */
.article-reactions {
    margin-top: var(--space-3xl);
    padding: var(--space-2xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    text-align: center;
}

.article-reactions h3 {
    margin-bottom: var(--space-xl);
    font-size: 1.25rem;
}

.reaction-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.reaction-btn.large {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-lg);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    min-width: 100px;
    transition: all var(--transition-fast);
}

.reaction-btn.large:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.reaction-btn.large.active {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--accent-primary);
}

.reaction-emoji {
    font-size: 2rem;
}

.reaction-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
}

.reaction-count {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--accent-primary);
}

/* Share Section */
.article-share {
    margin-top: var(--space-xl);
    text-align: center;
}

.article-share h3 {
    margin-bottom: var(--space-lg);
    font-size: 1.125rem;
}

.share-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.share-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.share-btn.twitter:hover {
    background: #1da1f2;
    color: white;
    border-color: #1da1f2;
}

.share-btn.linkedin:hover {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

/* Related Posts */
.related-posts {
    margin-top: var(--space-3xl);
}

.related-posts h3 {
    margin-bottom: var(--space-xl);
    font-size: 1.25rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.related-card {
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-fast);
}

.related-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.related-emoji {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--space-md);
}

.related-card h4 {
    font-size: 1rem;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
}

.related-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Progress Bar */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--accent-gradient);
    z-index: 1001;
    transition: width 100ms ease;
}

/* Responsive */
@media (max-width: 1024px) {
    .article-content .container {
        grid-template-columns: 1fr;
    }

    .toc {
        position: static;
        margin-bottom: var(--space-xl);
    }

    .lessons-grid {
        grid-template-columns: 1fr;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .article-header {
        padding: calc(80px + var(--space-xl)) 0 var(--space-xl);
    }

    .article-header .container {
        width: 100%;
        max-width: 100%;
        padding: 0 var(--space-md);
        box-sizing: border-box;
        overflow: hidden;
    }

    .article-title {
        font-size: 1.5rem;
        line-height: 1.3;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .article-subtitle {
        font-size: 1rem;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .article-meta {
        flex-wrap: wrap;
        gap: var(--space-sm);
        font-size: 0.75rem;
    }

    .back-link {
        font-size: 0.875rem;
    }

    .article-author {
        flex-wrap: wrap;
    }

    .author-avatar {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }

    .article-content {
        padding: var(--space-xl) 0;
    }

    .article-content .container {
        width: 100%;
        max-width: 100%;
        padding: 0 var(--space-md);
        box-sizing: border-box;
        overflow: hidden;
    }

    .content-body {
        max-width: 100%;
        width: 100%;
        box-sizing: border-box;
        overflow-wrap: break-word;
        word-wrap: break-word;
        overflow: hidden;
    }

    .content-body p,
    .content-body li {
        font-size: 1rem;
        line-height: 1.7;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .content-body h2 {
        font-size: 1.375rem;
        margin-top: var(--space-2xl);
        word-wrap: break-word;
    }

    .content-body h3 {
        font-size: 1.125rem;
        word-wrap: break-word;
    }

    .content-body ul,
    .content-body ol {
        padding-left: var(--space-md);
    }

    .content-body code {
        font-size: 0.8em;
        word-break: break-word;
    }

    /* Code blocks - full width with internal scroll */
    .code-block {
        width: calc(100% + 2 * var(--space-md));
        margin-left: calc(-1 * var(--space-md));
        margin-right: calc(-1 * var(--space-md));
        border-radius: 0;
        box-sizing: border-box;
        overflow: hidden;
    }

    .code-block pre {
        padding: var(--space-md);
        font-size: 0.7rem;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: pre;
        word-wrap: normal;
    }

    .code-block code {
        word-break: normal;
        white-space: pre;
    }

    /* Highlight quote */
    .highlight-quote {
        padding: var(--space-md);
        margin-left: 0;
        margin-right: 0;
        border-radius: var(--radius-md);
    }

    .highlight-quote p {
        font-size: 1rem;
        word-wrap: break-word;
    }

    /* Callouts - contained within viewport */
    .callout {
        padding: var(--space-md);
        margin-left: 0;
        margin-right: 0;
        border-radius: var(--radius-md);
        flex-direction: column;
        gap: var(--space-sm);
    }

    .callout-icon {
        font-size: 1.25rem;
    }

    .callout-content {
        width: 100%;
    }

    .callout-content p {
        font-size: 0.85rem;
        word-wrap: break-word;
    }

    .callout-content ul {
        margin: var(--space-sm) 0 0 var(--space-md);
        padding-left: 0;
    }

    .callout-content li {
        font-size: 0.85rem;
    }

    /* Lessons grid */
    .lessons-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .lesson-card {
        padding: var(--space-md);
    }

    .lesson-icon {
        font-size: 1.25rem;
    }

    .lesson-card h4 {
        font-size: 0.9rem;
        word-wrap: break-word;
    }

    .lesson-card p {
        font-size: 0.8rem;
        word-wrap: break-word;
    }

    /* TOC */
    .toc {
        padding: var(--space-md);
    }

    .toc h4 {
        font-size: 0.75rem;
    }

    .toc a {
        font-size: 0.8rem;
    }

    .toc ul {
        padding-left: 0;
    }

    /* Article reactions */
    .article-reactions {
        padding: var(--space-lg);
    }

    .article-reactions h3 {
        font-size: 1rem;
    }

    .reaction-btn.large {
        min-width: 70px;
        padding: var(--space-sm);
    }

    .reaction-emoji {
        font-size: 1.25rem;
    }

    .reaction-label {
        font-size: 0.625rem;
    }

    /* Share buttons */
    .article-share {
        margin-top: var(--space-lg);
    }

    .share-buttons {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .share-btn {
        width: 100%;
        justify-content: center;
    }

    /* Related posts */
    .related-posts {
        margin-top: var(--space-2xl);
    }

    .related-posts h3 {
        font-size: 1rem;
    }

    .related-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .related-card {
        padding: var(--space-md);
    }

    .related-emoji {
        font-size: 2rem;
    }

    .related-card h4 {
        font-size: 0.875rem;
        word-wrap: break-word;
    }
}

/* Reading time animation */
@keyframes readProgress {
    from { width: 0; }
    to { width: var(--progress); }
}

/* Highlight on scroll */
.highlight-on-scroll {
    animation: highlightPulse 2s ease;
}

@keyframes highlightPulse {
    0%, 100% { background: transparent; }
    50% { background: rgba(99, 102, 241, 0.1); }
}