/* ============================================================================
   Blog - part of the portfolio, not a separate site.
   Extends the chapter design system: flat cards, hairline structure, no
   glass, no shadows, no rounded post cards. Everything here is scoped to
   .blog-* classes so style.css stays untouched.
   Loaded only by /blog/ pages (see the head-end slot in BaseLayout usage).
   ============================================================================ */

/* ---------- Chapter index: the post list ---------- */
.blog-post-list {
    list-style: none;
    margin: clamp(2rem, 4vw, 3rem) 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
}

/* Flat row cards: one hairline per card, darkening on hover. No shadow,
   no radius - the same rule language as the detail-page spec cards. */
.blog-post-card {
    display: block;
    border-top: 1px solid var(--term-line);
    padding: clamp(1.5rem, 3vw, 2.25rem) 0;
    color: inherit;
    text-decoration: none;
    transition: border-color 0.25s ease;
}

.blog-post-list li:last-child .blog-post-card {
    border-bottom: 1px solid var(--term-line);
}

.blog-post-card:hover,
.blog-post-card:focus-visible {
    border-top-color: var(--text-primary);
    text-decoration: none;
}

/* Date / tag / device - JetBrains Mono micro-label language */
.blog-post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 0.75rem;
}

.blog-post-meta .blog-meta-tag { color: var(--accent-blue); }

/* When the tag is a link (post header), keep the mono look; underline on hover */
.blog-post-meta a.blog-meta-tag { text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.2s ease; }
.blog-post-meta a.blog-meta-tag:hover,
.blog-post-meta a.blog-meta-tag:focus-visible { border-bottom-color: currentColor; }

.blog-post-meta .blog-meta-sep {
    color: var(--text-faint);
    opacity: 0.6;
}

/* Device chip: hairline, flat, 4px curve - the detail-page tag language */
.blog-post-meta .blog-meta-device {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-btn);
    padding: 0.15rem 0.5rem;
    color: var(--text-secondary);
}

.blog-post-title {
    font-family: var(--font-display);
    font-size: var(--text-row);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.15;
    color: var(--text-primary);
    margin: 0 0 0.5rem;
    overflow-wrap: break-word;
}

.blog-post-excerpt {
    font-family: var(--font-primary);
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: var(--measure);
    margin: 0;
}

/* ---------- Post page shell ---------- */
.blog-post-main { background: var(--surface-a); }

/* Back link: mono micro-label with a hairline underline that darkens */
.blog-back-link {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent-blue);
    text-decoration: none;
    border-bottom: 1px solid var(--term-line);
    padding-bottom: 0.35rem;
    margin-bottom: clamp(2rem, 4vw, 3rem);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.blog-back-link:hover,
.blog-back-link:focus-visible {
    color: var(--text-primary);
    border-bottom-color: var(--text-primary);
    text-decoration: none;
}

.blog-back-link--bottom {
    margin-top: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: 0;
}

/* Post header: display-scale title under a system label */
.blog-post-hero { padding-bottom: clamp(2rem, 4vw, 3rem); }

.blog-post-hero .main-title { margin-top: 0; }

/* Meta line under the lede: date, reading time, tag, device */
.blog-post-hero .blog-post-meta { margin: 1.5rem 0 0; }

/* ---------- Prose: Inter, 65ch, generous leading ---------- */
.blog-prose {
    font-family: var(--font-primary);
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--text-secondary);
    max-width: 65ch;
}

.blog-prose > *:first-child { margin-top: 0; }

.blog-prose p { margin: 0 0 1.35rem; }

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

.blog-prose a {
    color: var(--accent-blue);
    text-decoration: underline;
    text-underline-offset: 0.2em;
}

.blog-prose h2 {
    font-family: var(--font-display);
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--text-primary);
    margin: clamp(2.25rem, 5vw, 3rem) 0 0.85rem;
}

.blog-prose h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.3;
    color: var(--text-primary);
    margin: 2rem 0 0.75rem;
}

.blog-prose ul,
.blog-prose ol {
    margin: 0 0 1.35rem;
    padding-left: 1.4rem;
}

.blog-prose li { margin-bottom: 0.55rem; }

.blog-prose li::marker { color: var(--accent-blue); }

.blog-prose blockquote {
    border-left: 2px solid var(--accent-blue);
    padding-left: 1.2rem;
    margin: 1.75rem 0;
    color: var(--text-primary);
    font-style: italic;
}

.blog-prose hr {
    border: 0;
    border-top: 1px solid var(--term-line);
    margin: clamp(2rem, 4vw, 2.75rem) 0;
}

/* Images: full-measure, hairline frame, flat. Point src at /assets/images/... */
.blog-prose img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-btn);
    margin: 1.75rem 0;
}

.blog-prose figure { margin: 1.75rem 0; }

.blog-prose figure img { margin: 0; }

.blog-prose figcaption {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    color: var(--text-faint);
    margin-top: 0.6rem;
}

/* Inline code: hairline, flat, mono - no glass */
.blog-prose code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--surface-b);
    border: 1px solid var(--term-line);
    border-radius: var(--radius-btn);
    padding: 0.1em 0.4em;
}

/* Code blocks: flat, always-dark surface, JetBrains Mono, no glass */
.blog-prose pre {
    background: var(--ink-bg);
    color: var(--ink-fg);
    border: 1px solid var(--ink-line);
    border-radius: var(--radius-btn);
    box-shadow: none;
    padding: clamp(1rem, 2vw, 1.35rem) clamp(1.1rem, 2vw, 1.5rem);
    margin: 0 0 1.35rem;
    overflow-x: auto;
    font-size: 0.9rem;
    line-height: 1.65;
    tab-size: 2;
}

.blog-prose pre code {
    font-family: var(--font-mono);
    background: none;
    border: 0;
    border-radius: 0;
    padding: 0;
    font-size: inherit;
    color: inherit;
    white-space: pre;
}

/* ---------- Ink closing section (homepage contact-closer language) ---------- */
.blog-closer .chapter-head { margin-bottom: clamp(2rem, 4vw, 3rem); }

.blog-closer .hero-cta { margin-top: 0; }

@media (max-width: 768px) {
    .blog-post-meta { gap: 0.4rem 0.75rem; }
    .blog-prose pre { font-size: 0.82rem; }
}