/* ============================================================
   q4ai — Blog Styles
   ============================================================ */

/* Blog listing page hero */
.blog-hero {
  padding: calc(var(--nav-h) + 4rem) 0 4rem;
  text-align: center;
}
.blog-hero .label-badge { margin-bottom: 1.25rem; }
.blog-hero h1 { margin-bottom: 1rem; }
.blog-hero p { max-width: 540px; margin: 0 auto; font-size: 1.0625rem; }

/* Blog grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.75rem;
}

.no-posts {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--c-muted);
  font-size: 1.0625rem;
  padding: 5rem 0;
}

/* Blog card */
.blog-card {
  display: flex; flex-direction: column; gap: 1rem;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 2rem;
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
  text-decoration: none; color: inherit;
}
.blog-card:hover { border-color: var(--c-border-act); transform: translateY(-4px); box-shadow: var(--shadow-glow); }

.blog-card__meta {
  display: flex; align-items: center; gap: 0.75rem;
}
.blog-tag {
  display: inline-block;
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: #a78bfa;
  background: rgba(139,92,246,0.1);
  border: 1px solid rgba(139,92,246,0.2);
  border-radius: var(--r-full);
  padding: 0.2rem 0.7rem;
}
.blog-date {
  font-size: 0.8125rem; color: var(--c-dim);
}

.blog-card__title {
  font-family: var(--f-head);
  font-size: 1.2rem; font-weight: 600; line-height: 1.35;
  color: var(--c-text); margin: 0;
}
.blog-card__excerpt {
  font-size: 0.9125rem; color: var(--c-muted); line-height: 1.75;
  margin: 0; flex: 1;
}
.blog-card__footer {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: auto; padding-top: 1rem;
  border-top: 1px solid var(--c-border);
}
.blog-read-time { font-size: 0.8125rem; color: var(--c-dim); }

/* ============================================================
   Post article page
   ============================================================ */
.post-wrapper { padding: calc(var(--nav-h) + 3rem) 0 5rem; }
.post-container { max-width: 760px; margin: 0 auto; }

.post-header { margin-bottom: 3.5rem; }
.post-header .blog-tag { margin-bottom: 1.5rem; }

.post-header h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin-bottom: 1.5rem; line-height: 1.15;
}

.post-meta {
  display: flex; align-items: center; gap: 1.5rem;
  color: var(--c-muted); font-size: 0.9125rem;
  border-top: 1px solid var(--c-border);
  padding-top: 1.25rem; flex-wrap: wrap;
}

.post-content { color: var(--c-muted); }
.post-content p  { font-size: 1.0625rem; line-height: 1.9; margin-bottom: 1.75rem; }
.post-content h2 { font-size: 1.75rem; color: var(--c-text); margin: 3rem 0 1.25rem; }
.post-content h3 { font-size: 1.375rem; color: var(--c-text); margin: 2.25rem 0 1rem; }

.post-content ul, .post-content ol {
  padding-left: 1.5rem; margin-bottom: 1.75rem;
}
.post-content ul { list-style-type: disc; }
.post-content ol { list-style-type: decimal; }
.post-content li { font-size: 1.0625rem; line-height: 1.75; color: var(--c-muted); margin-bottom: 0.5rem; }

.post-content blockquote {
  border-left: 3px solid var(--c-purple);
  padding: 1rem 1.5rem; margin: 2rem 0;
  background: rgba(139,92,246,0.06);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}
.post-content blockquote p { font-style: italic; color: var(--c-text); margin: 0; }

.post-content code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: 4px; padding: 0.1rem 0.4rem;
  font-size: 0.875em; color: #a78bfa;
}

.post-content a { color: #a78bfa; text-decoration: underline; text-underline-offset: 3px; }

.post-footer {
  margin-top: 4rem; padding-top: 2rem;
  border-top: 1px solid var(--c-border);
  display: flex; align-items: center; justify-content: space-between;
}

.back-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.9375rem; font-weight: 600;
  color: var(--c-muted); transition: color var(--t);
}
.back-link:hover { color: var(--c-text); }

.share-links {
  display: flex; align-items: center; gap: 0.625rem;
  font-size: 0.875rem; color: var(--c-dim);
}
.share-btn {
  padding: 0.375rem 0.875rem;
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-full);
  font-size: 0.8rem; font-weight: 600; color: var(--c-muted);
  transition: border-color var(--t), color var(--t);
}
.share-btn:hover { border-color: var(--c-border-act); color: var(--c-text); cursor: pointer; }

/* Instructions panel for adding new posts */
.add-post-guide {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 2rem;
  margin-top: 4rem;
}
.add-post-guide h3 { margin-bottom: 1rem; font-size: 1.1rem; }
.add-post-guide ol { padding-left: 1.25rem; list-style-type: decimal; }
.add-post-guide li { font-size: 0.9rem; color: var(--c-muted); margin-bottom: 0.625rem; line-height: 1.7; }
.add-post-guide code {
  font-family: 'JetBrains Mono', monospace;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
  font-size: 0.85em;
  color: #a78bfa;
}

@media (max-width: 768px) {
  .blog-grid { grid-template-columns: 1fr; }
  .post-footer { flex-direction: column; gap: 1.5rem; align-items: flex-start; }
  .share-links { flex-wrap: wrap; }
}