/* Blog Styles - matches AxonFlow landing site brand */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #0F766E;
    --primary-dark: #134E4A;
    --primary-light: #14B8A6;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-light: #94A3B8;
    --bg-white: #FFFFFF;
    --bg-light: #F8FAFC;
    --bg-gray: #F1F5F9;
    --border: #E2E8F0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    line-height: 1.7;
    background: var(--bg-white);
}

/* Reading progress bar */
.reading-progress {
    position: fixed; top: 0; left: 0;
    width: 0%; height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    z-index: 1001;
    transition: width 0.1s linear;
}

/* Nav */
.blog-nav {
    position: fixed; top: 0; left: 0; right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}
.blog-nav-wrapper {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 0;
}
.blog-logo { text-decoration: none; }
.blog-nav-links { display: flex; align-items: center; gap: 28px; }
.blog-nav-links a { color: var(--text-secondary); text-decoration: none; font-weight: 500; font-size: 15px; }
.blog-nav-links a:hover { color: var(--primary); }
.blog-nav-cta {
    background: var(--primary) !important; color: white !important;
    padding: 8px 20px; border-radius: 8px; font-weight: 600 !important;
}
.blog-nav-cta:hover { background: var(--primary-dark) !important; }

/* Layout */
.blog-container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.blog-container-narrow { max-width: 780px; }
.blog-main { padding-top: 100px; min-height: 80vh; }

/* Blog list */
.blog-header { text-align: center; margin-bottom: 48px; padding: 40px 0 0; }
.blog-header h1 { font-size: 2.5rem; font-weight: 800; margin-bottom: 12px; }
.blog-header p { color: var(--text-secondary); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

/* Tag filter */
.blog-tag-filter {
    display: flex; justify-content: center; gap: 8px;
    margin-top: 24px; flex-wrap: wrap;
}
.blog-tag-filter-btn {
    background: var(--bg-gray); color: var(--text-secondary);
    padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 500;
    border: 1px solid transparent; cursor: pointer;
    transition: all 0.15s;
    font-family: inherit;
}
.blog-tag-filter-btn:hover { border-color: var(--primary-light); color: var(--primary); }
.blog-tag-filter-btn.active {
    background: var(--primary); color: white;
    border-color: var(--primary);
}

.blog-list { display: flex; flex-direction: column; gap: 24px; max-width: 780px; margin: 0 auto; }
.blog-card { border: 1px solid var(--border); border-radius: 12px; transition: all 0.2s; }
.blog-card:hover { border-color: var(--primary-light); box-shadow: 0 4px 12px rgba(15,118,110,0.08); }
.blog-card a { text-decoration: none; color: inherit; }
.blog-card-content { padding: 28px 32px; }
.blog-card-meta { display: flex; gap: 16px; font-size: 14px; color: var(--text-light); margin-bottom: 12px; }
.blog-card h2 { font-size: 1.4rem; font-weight: 700; margin-bottom: 10px; line-height: 1.35; }
.blog-card p { color: var(--text-secondary); font-size: 15px; line-height: 1.6; }
.blog-card-tags { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.blog-tag {
    background: var(--bg-gray); color: var(--text-secondary);
    padding: 4px 12px; border-radius: 6px; font-size: 13px; font-weight: 500;
}
.blog-card.hidden { display: none; }

/* Blog post */
.blog-post-header { padding: 40px 0 32px; border-bottom: 1px solid var(--border); margin-bottom: 36px; }
.blog-post-meta { display: flex; align-items: center; gap: 16px; font-size: 14px; color: var(--text-light); margin-bottom: 20px; }
.blog-back { color: var(--primary) !important; font-weight: 500; text-decoration: none; }
.blog-back:hover { text-decoration: underline; }
.blog-post-header h1 { font-size: 2.2rem; font-weight: 800; line-height: 1.25; margin-bottom: 12px; }
.blog-post-subtitle {
    font-size: 14px; color: var(--text-light); font-weight: 400;
    margin-bottom: 16px;
}

/* Table of contents */
.blog-toc {
    background: var(--bg-light); border: 1px solid var(--border);
    border-radius: 10px; padding: 20px 24px;
    margin-bottom: 36px;
}
.blog-toc-title {
    font-size: 13px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.05em; color: var(--text-light);
    margin-bottom: 12px;
}
.blog-toc nav > ul { list-style: none; margin: 0; padding: 0; }
.blog-toc nav > ul > li { margin-bottom: 6px; }
.blog-toc nav > ul > li > a {
    color: var(--text-secondary); text-decoration: none;
    font-size: 14.5px; font-weight: 500; line-height: 1.5;
}
.blog-toc nav > ul > li > a:hover { color: var(--primary); }
.blog-toc nav ul ul { display: none; }

/* Post content */
.blog-post-content { padding-bottom: 48px; }
.blog-post-content h2 { font-size: 1.5rem; font-weight: 700; margin: 40px 0 16px; padding-top: 8px; }
.blog-post-content h3 { font-size: 1.2rem; font-weight: 600; margin: 32px 0 12px; }
.blog-post-content p { margin-bottom: 18px; color: var(--text-primary); font-size: 16.5px; line-height: 1.75; }
.blog-post-content ul, .blog-post-content ol { margin: 0 0 18px 24px; }
.blog-post-content li { margin-bottom: 8px; font-size: 16.5px; line-height: 1.65; }
.blog-post-content strong { font-weight: 600; }
.blog-post-content a { color: var(--primary); text-decoration: underline; }
.blog-post-content a:hover { color: var(--primary-dark); }
.blog-post-content hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
.blog-post-content blockquote {
    border-left: 3px solid var(--primary); padding: 12px 20px;
    margin: 20px 0; background: var(--bg-light); border-radius: 0 8px 8px 0;
}

/* Code blocks */
.blog-post-content code {
    background: var(--bg-gray); padding: 2px 6px; border-radius: 4px;
    font-size: 14px; font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}
.blog-post-content pre {
    position: relative;
    background: #1e293b; color: #e2e8f0;
    padding: 20px 24px; border-radius: 10px; overflow-x: auto;
    margin: 20px 0 24px; line-height: 1.5;
}
.blog-post-content pre code {
    background: none; padding: 0; color: inherit; font-size: 13.5px;
}

/* Code copy button */
.code-copy-btn {
    position: absolute; top: 8px; right: 8px;
    background: rgba(255,255,255,0.1); color: #94A3B8;
    border: 1px solid rgba(255,255,255,0.1); border-radius: 6px;
    padding: 4px 10px; font-size: 12px; font-family: inherit;
    cursor: pointer; transition: all 0.15s;
    opacity: 0;
}
.blog-post-content pre:hover .code-copy-btn { opacity: 1; }
.code-copy-btn:hover { background: rgba(255,255,255,0.2); color: #e2e8f0; }
.code-copy-btn.copied { color: var(--primary-light); }

/* Mermaid diagrams */
.mermaid {
    background: var(--bg-light); border: 1px solid var(--border);
    border-radius: 10px; padding: 24px;
    margin: 20px 0 24px; text-align: center;
    overflow-x: auto;
}

/* Tables - horizontal scroll on mobile */
.blog-table-wrapper { overflow-x: auto; margin: 20px 0 24px; -webkit-overflow-scrolling: touch; }
.blog-post-content table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 480px; margin: 0; }
.blog-post-content th { background: var(--bg-gray); font-weight: 600; text-align: left; padding: 10px 16px; border: 1px solid var(--border); white-space: nowrap; }
.blog-post-content td { padding: 10px 16px; border: 1px solid var(--border); }

/* Post footer */
.blog-post-footer {
    border-top: 1px solid var(--border); padding-top: 32px; margin-top: 16px;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 24px;
}
.blog-post-author { display: flex; align-items: center; gap: 14px; }
.blog-author-avatar { width: 48px; height: 48px; border-radius: 50%; }
.blog-post-author strong { display: block; font-size: 15px; }
.blog-post-author span { color: var(--text-light); font-size: 14px; }
.blog-post-cta p { font-size: 14px; color: var(--text-secondary); margin-bottom: 8px; }
.blog-cta-button {
    display: inline-block; background: var(--primary); color: white !important;
    padding: 10px 24px; border-radius: 8px; text-decoration: none !important;
    font-weight: 600; font-size: 14px;
}
.blog-cta-button:hover { background: var(--primary-dark); }

/* Footer */
.blog-footer { border-top: 1px solid var(--border); padding: 32px 0; margin-top: 60px; }
.blog-footer-content { display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: var(--text-light); }
.blog-footer-links { display: flex; gap: 24px; }
.blog-footer-links a { color: var(--text-light); text-decoration: none; }
.blog-footer-links a:hover { color: var(--primary); }

/* RSS link */
.blog-rss {
    display: inline-flex; align-items: center; gap: 6px;
    margin-top: 16px; color: var(--text-light); font-size: 14px;
    text-decoration: none;
}
.blog-rss:hover { color: var(--primary); }
.blog-rss svg { width: 14px; height: 14px; }

/* Responsive */
@media (max-width: 768px) {
    .blog-nav-links { display: none; }
    .blog-header h1 { font-size: 1.8rem; }
    .blog-post-header h1 { font-size: 1.6rem; }
    .blog-card-content { padding: 20px; }
    .blog-post-footer { flex-direction: column; align-items: flex-start; }
    .blog-footer-content { flex-direction: column; gap: 12px; text-align: center; }
    .blog-toc { padding: 16px 20px; }
    .code-copy-btn { opacity: 1; }
    .blog-post-content pre { padding: 16px; }
}