/* ============================================
   Kivode+ Blog Styles
   ============================================ */

/* ============================================
   Blog Header
   ============================================ */
.blog-header {
    padding: calc(var(--nav-height) + var(--space-3xl)) 0 var(--space-2xl);
    background: var(--color-gradient-bg);
    border-bottom: 1px solid var(--color-border);
    text-align: center;
}

.blog-header .page-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.blog-header .page-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
}

/* ============================================
   Blog Search
   ============================================ */
.blog-search {
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: var(--space-md);
    width: 20px;
    height: 20px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: var(--space-md) var(--space-md) var(--space-md) calc(var(--space-md) * 2 + 20px);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    color: var(--color-text-primary);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: all var(--transition-fast);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-border-hover);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.05);
}

/* ============================================
   Tags Filter
   ============================================ */
.blog-tags-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
    max-width: 800px;
    margin: 0 auto;
}

.tag-filter {
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag-filter:hover {
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

.tag-filter.active {
    background: var(--color-text-primary);
    border-color: var(--color-text-primary);
    color: var(--color-bg-primary);
}

/* ============================================
   Search Results Info
   ============================================ */
.search-results-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-xl);
}

#searchResultsText {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.clear-search {
    padding: 0.375rem 0.75rem;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.clear-search:hover {
    color: var(--color-text-primary);
}

/* ============================================
   Blog Grid
   ============================================ */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--space-xl);
}

.blog-loading {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl) 0;
    color: var(--color-text-muted);
}

.blog-loading .loading-spinner {
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-md);
}

/* ============================================
   Post Card
   ============================================ */
.post-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.post-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.post-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.post-card-image-wrapper {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-bg-tertiary);
}

.post-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.post-card:hover .post-card-image {
    transform: scale(1.03);
}

.post-card-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-hover) 100%);
}

.post-card-image-placeholder svg {
    width: 48px;
    height: 48px;
    color: var(--color-text-muted);
}

.post-card-content {
    padding: var(--space-lg);
}

.post-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.post-card-tag {
    padding: 0.25rem 0.625rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.post-card-tag:hover {
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

.post-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-description {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.post-card-separator {
    opacity: 0.5;
}

/* Small card variant for related articles */
.post-card-small .post-card-content {
    padding: var(--space-md);
}

.post-card-small .post-card-title {
    font-size: 1rem;
    -webkit-line-clamp: 2;
}

/* ============================================
   Empty State
   ============================================ */
.blog-empty {
    text-align: center;
    padding: var(--space-4xl) 0;
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-2xl);
}

.empty-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-text-muted);
}

.blog-empty h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.blog-empty p {
    color: var(--color-text-muted);
    max-width: 400px;
    margin: 0 auto;
}

/* ============================================
   Newsletter Section
   ============================================ */
.blog-newsletter {
    padding: var(--space-4xl) 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.newsletter-card {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
}

.newsletter-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.newsletter-content p {
    color: var(--color-text-secondary);
}

.newsletter-form {
    display: flex;
    gap: var(--space-sm);
    flex: 1;
    max-width: 480px;
}

.newsletter-input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.9375rem;
    font-family: var(--font-primary);
}

.newsletter-input::placeholder {
    color: var(--color-text-muted);
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--color-border-hover);
}

/* ============================================
   Article Header
   ============================================ */
.article-header {
    padding: calc(var(--nav-height) + var(--space-2xl)) 0 var(--space-xl);
    background: var(--color-gradient-bg);
    border-bottom: 1px solid var(--color-border);
}

.article-header-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.breadcrumbs {
    margin-bottom: var(--space-lg);
}

.breadcrumbs ol {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    list-style: none;
    padding: 0;
    margin: 0;
}

.breadcrumbs a {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
    color: var(--color-text-primary);
}

.breadcrumbs li:last-child {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.article-tag {
    padding: 0.375rem 0.875rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-fast);
}

.article-tag:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

.article-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
    margin-bottom: var(--space-lg);
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

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

.author-avatar {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-text-primary);
    color: var(--color-bg-primary);
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 700;
}

.author-name {
    color: var(--color-text-secondary);
    font-weight: 500;
}

.meta-separator {
    opacity: 0.4;
}

.article-cover {
    margin-top: var(--space-2xl);
    border-radius: var(--radius-2xl);
    overflow: hidden;
}

.article-cover img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* ============================================
   Article Layout
   ============================================ */
.article-main {
    padding: var(--space-3xl) 0;
}

.article-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-3xl);
    max-width: 1100px;
    margin: 0 auto;
}

/* ============================================
   Article Sidebar (TOC)
   ============================================ */
.article-sidebar {
    position: relative;
}

.sidebar-sticky {
    position: sticky;
    top: calc(var(--nav-height) + var(--space-xl));
}

.sidebar-sticky h3 {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.toc-nav {
    margin-bottom: var(--space-2xl);
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-item {
    margin-bottom: 0.25rem;
}

.toc-link {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.toc-link:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-hover);
}

.toc-link.active {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.08);
    font-weight: 500;
}

.toc-level-3 {
    padding-left: var(--space-md);
}

.toc-level-4 {
    padding-left: calc(var(--space-md) * 2);
}

.toc-empty {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-style: italic;
}

/* Article Share */
.article-share h4 {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

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

.share-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share-btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

.share-btn svg {
    width: 18px;
    height: 18px;
}

.share-btn.copied {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: #10b981;
}

/* ============================================
   Article Content
   ============================================ */
.article-content {
    max-width: 720px;
}

.article-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl) 0;
    color: var(--color-text-muted);
}

.article-loading .loading-spinner {
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-md);
}

.article-error {
    text-align: center;
    padding: var(--space-3xl) 0;
}

.article-error p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

/* Typography */
.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
    color: var(--color-text-primary);
    font-weight: 700;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

.article-content h1 {
    font-size: 2rem;
}

.article-content h2 {
    font-size: 1.75rem;
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

.article-content h3 {
    font-size: 1.375rem;
}

.article-content h4 {
    font-size: 1.125rem;
}

.article-content p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.article-content a {
    color: var(--color-text-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}

.article-content a:hover {
    color: var(--color-accent-secondary);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
}

.article-content li {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-xs);
}

.article-content ul li::marker {
    color: var(--color-text-muted);
}

.article-content blockquote {
    margin: var(--space-xl) 0;
    padding: var(--space-md) var(--space-lg);
    border-left: 3px solid var(--color-text-primary);
    background: var(--color-bg-tertiary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-content blockquote p {
    margin: 0;
    color: var(--color-text-primary);
    font-style: italic;
}

.article-content blockquote p:last-child {
    margin-top: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: normal;
}

/* Code Blocks */
.code-block-wrapper {
    margin: var(--space-lg) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

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

.code-language {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.code-copy-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.375rem 0.75rem;
    background: var(--color-bg-hover);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.code-copy-btn:hover {
    background: var(--color-border-hover);
    color: var(--color-text-primary);
}

.code-copy-btn svg {
    width: 14px;
    height: 14px;
}

.code-copy-btn.copied {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.article-content pre {
    margin: 0;
    padding: var(--space-md);
    background: var(--color-bg-primary);
    overflow-x: auto;
}

.article-content pre code {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    background: transparent;
    padding: 0;
}

/* Inline code */
.article-content code:not(pre code) {
    padding: 0.2em 0.4em;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.875em;
    color: var(--color-text-primary);
}

/* Syntax Highlighting Tokens */
.token-keyword {
    color: #c678dd;
}

.token-string {
    color: #98c379;
}

.token-comment {
    color: #5c6370;
    font-style: italic;
}

.token-number {
    color: #d19a66;
}

/* Tables */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-lg) 0;
    font-size: 0.9375rem;
}

.article-content th,
.article-content td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.article-content th {
    background: var(--color-bg-tertiary);
    font-weight: 600;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.75rem;
}

.article-content td {
    color: var(--color-text-secondary);
}

.article-content tr:hover td {
    background: var(--color-bg-hover);
}

/* Checklists */
.article-content input[type="checkbox"] {
    margin-right: var(--space-sm);
    accent-color: var(--color-text-primary);
}

/* Horizontal Rule */
.article-content hr {
    margin: var(--space-2xl) 0;
    border: none;
    border-top: 1px solid var(--color-border);
}

/* Images */
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    margin: var(--space-lg) 0;
}

/* Search Highlight */
.article-content mark,
.post-card-content mark {
    background: rgba(251, 191, 36, 0.3);
    color: inherit;
    padding: 0.1em 0.2em;
    border-radius: var(--radius-sm);
}

/* ============================================
   Related Articles
   ============================================ */
.related-articles {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.related-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xl);
}

/* ============================================
   Article CTA
   ============================================ */
.article-cta {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
}

.cta-card {
    text-align: center;
    padding: var(--space-3xl);
    background: var(--color-gradient-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
}

.cta-card h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.cta-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .article-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .blog-header .page-title {
        font-size: 2rem;
    }

    .newsletter-card {
        flex-direction: column;
        text-align: center;
    }

    .newsletter-form {
        width: 100%;
        flex-direction: column;
    }

    .article-title {
        font-size: 1.75rem;
    }

    .article-content h2 {
        font-size: 1.5rem;
    }

    .article-content h3 {
        font-size: 1.25rem;
    }

    .cta-card {
        padding: var(--space-xl);
    }

    .cta-card h2 {
        font-size: 1.375rem;
    }

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

    .cta-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .blog-tags-filter {
        gap: var(--space-xs);
    }

    .tag-filter {
        padding: 0.375rem 0.75rem;
        font-size: 0.8125rem;
    }

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

    .post-card-title {
        font-size: 1.125rem;
    }

    .search-results-info {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
}

/* Mobile overflow fixes for article pages */
.article-meta {
    flex-wrap: wrap;
}

.article-layout,
.article-content {
    min-width: 0;
}

.article-content table,
.article-content .code-block-wrapper,
.article-content pre,
.article-content blockquote,
.article-content .highlight-box,
.article-content .callout,
.article-content .note {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.article-content table {
    display: block;
    width: max-content;
    min-width: 100%;
}

@media (max-width: 768px) {
    .article-main {
        overflow-x: hidden;
    }
}