/* Blog surfaces: the index rows and the article shell.
 *
 * Class names on the index cards and the post meta are written by scripts/materialise-blog.mjs
 * (blog-card, blog-card-top, blog-category, blog-date, blog-card-title, blog-card-excerpt,
 * blog-card-footer, read-more, blog-read-time; post-meta > .author/.date/.read-time/.category/.dot)
 * and by the two templates; this file only paints them. Tokens come from tailwind.css (:root).
 * Approved design: NaraDatum Blog Index (P5, ruled rows) and NaraDatum Article (P6, 72ch shell).
 */

/* ── Index: one ruled row per post, date rail left, title and standfirst right ─────────── */
.blog-grid {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--border);
}

.blog-card {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 8px 32px;
    padding: 28px 0;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    color: var(--text-primary);
    transition: background-color 150ms cubic-bezier(.4, 0, .2, 1);
}
.blog-card:hover { color: var(--text-primary); background: transparent; }
.blog-card:focus-visible { outline: 2px solid var(--brand-primary); outline-offset: 4px; border-radius: 2px; }

.blog-card-top {
    grid-column: 1;
    grid-row: 1 / span 3;
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: flex-start;
}
.blog-date, .blog-read-time, .post-meta {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-secondary);
}
.blog-category {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--gold-text);
}

.blog-card-title {
    grid-column: 2;
    font-size: 22px;
    line-height: 1.3;
    font-weight: 600;
    color: var(--brand-primary);
    text-wrap: balance;
    margin: 0;
}
.blog-card:hover .blog-card-title { text-decoration: underline; text-underline-offset: .18em; text-decoration-thickness: 1px; }

.blog-card-excerpt {
    grid-column: 2;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 66ch;
    text-wrap: pretty;
    margin: 0;
}

.blog-card-footer {
    grid-column: 2;
    display: flex;
    flex-wrap: wrap;
    gap: 6px 20px;
    align-items: baseline;
    margin-top: 4px;
}
.read-more {
    font-weight: 600;
    font-size: 15px;
    color: var(--brand-primary);
}

.empty-state, .error-state {
    padding: 40px 0;
    font-size: 15px;
    color: var(--text-secondary);
}
.empty-state strong, .error-state strong { color: var(--brand-primary); font-weight: 600; display: block; margin-bottom: 8px; }

/* Loading skeletons exist only in the templates; the materialiser removes them. */
.skeleton-card { padding: 28px 0; border-bottom: 1px solid var(--border); }
.skeleton { background: var(--surface-raised); }

/* ── Article shell ──────────────────────────────────────────────────────────────────────── */
.post-loading, .post-error { padding-block: clamp(48px, 7vw, 104px); }
.post-loading-inner, .post-error-inner { max-width: 72ch; display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }

.post-wrapper {
    max-width: 72ch;
    padding-block: clamp(40px, 6vw, 80px) clamp(48px, 7vw, 96px);
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.post-breadcrumb a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    color: var(--text-secondary);
}
.post-breadcrumb a:hover { color: var(--brand-primary); text-decoration: underline; }
.post-breadcrumb ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 0 4px; font-size: 15px; color: var(--text-secondary); }
.post-breadcrumb li + li::before { content: "/"; margin-right: 4px; color: var(--text-muted); }
.post-breadcrumb li[aria-current="page"] { color: var(--text-primary); max-width: 40ch; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.post-provenance { color: var(--text-secondary); border-left: 3px solid var(--surface-raised); padding-left: 14px; }
.post-related { border-top: 1px solid var(--surface-raised); padding-top: 28px; display: flex; flex-direction: column; gap: 14px; }
.post-related ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.post-related a { font-weight: 500; text-decoration: none; color: var(--brand-primary); }
.post-related a:hover { text-decoration: underline; }
.post-related time { display: block; font-size: 13px; color: var(--text-muted); }

.post-header { display: flex; flex-direction: column; gap: 18px; }
.post-category-badge { margin-bottom: 4px; }
.post-title { max-width: 24ch; }
.post-meta { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: baseline; }
.post-meta .dot { color: var(--text-muted); }
.post-meta .category { color: var(--gold-text); text-transform: uppercase; letter-spacing: .12em; font-size: 12px; }

/* The article body is rendered from Markdown at build time; nd-article-body carries the type. */
.prose { color: var(--text-primary); }

.post-footer-nav { padding-top: 24px; }

@media (max-width: 640px) {
    .blog-card { grid-template-columns: minmax(0, 1fr); gap: 10px; padding: 22px 0; }
    .blog-card-top { grid-row: auto; flex-direction: row; flex-wrap: wrap; gap: 6px 16px; align-items: baseline; }
    .blog-card-top, .blog-card-title, .blog-card-excerpt, .blog-card-footer { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
    .blog-card { transition: none; }
}

@media print {
    .post-breadcrumb, .post-footer-nav { display: none; }
}