/* ============================================
   BLOG / ARTICLE / PAGE LAYOUT STYLES
   Extends the main style.css design system
   ============================================ */

/* ── Page Hero (inner pages) ── */
.page-hero {
  padding: calc(var(--nav-height) + 4rem) 0 3rem;
  background: var(--bg-hero);
  text-align: center;
  position: relative;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-hero .page-subtitle {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

.page-hero .page-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1.5rem;
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.page-hero .page-meta span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.page-hero .page-meta svg {
  width: 14px;
  height: 14px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  justify-content: center;
}

.breadcrumb a {
  color: var(--text-tertiary);
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb .sep {
  color: var(--text-muted);
}


/* ── Article Content ── */
.article-content {
  max-width: 780px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.article-content h2 {
  font-size: var(--fs-2xl);
  margin: 3rem 0 1.25rem;
  padding-top: 1rem;
}

.article-content h3 {
  font-size: var(--fs-xl);
  margin: 2.5rem 0 1rem;
}

.article-content h4 {
  font-size: var(--fs-lg);
  margin: 2rem 0 0.75rem;
}

.article-content p {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 1.5rem;
}

.article-content ul,
.article-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

.article-content li {
  font-size: var(--fs-md);
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 0.5rem;
}

.article-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(16, 185, 129, 0.3);
  transition: text-decoration-color 0.2s ease;
}

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

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

.article-content img {
  border-radius: 12px;
  margin: 2rem 0;
  border: 1px solid var(--card-border);
}

/* Key Takeaway / TLDR blocks */
.key-takeaway {
  background: var(--accent-lighter);
  border: 1px solid var(--accent-light);
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
}

.key-takeaway p {
  margin-bottom: 0;
  color: var(--text-primary);
}

.key-takeaway strong {
  color: var(--accent-dark);
}

/* Blockquote */
.article-content blockquote {
  border-left: 4px solid var(--accent);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: var(--bg-secondary);
  border-radius: 0 12px 12px 0;
}

.article-content blockquote p {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.article-content blockquote cite {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  font-style: normal;
}

/* Code blocks */
.article-content code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875em;
  background: var(--bg-tertiary);
  padding: 0.2em 0.5em;
  border-radius: 4px;
  color: var(--accent-dark);
}

.article-content pre {
  background: var(--footer-bg);
  color: #e5e7eb;
  padding: 1.5rem;
  border-radius: 12px;
  overflow-x: auto;
  margin: 2rem 0;
  font-size: 0.875rem;
  line-height: 1.6;
}

.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* Table */
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: var(--fs-sm);
}

.article-content th {
  background: var(--bg-secondary);
  font-weight: 600;
  text-align: left;
  padding: 0.875rem 1rem;
  border-bottom: 2px solid var(--card-border);
  color: var(--text-primary);
}

.article-content td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--card-border);
  color: var(--text-secondary);
}

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

/* Source citation */
.source-citation {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  font-style: italic;
}

/* Author card */
.author-card {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  margin: 3rem 0;
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: var(--fs-lg);
  flex-shrink: 0;
}

.author-info h4 {
  font-size: var(--fs-base);
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.author-info p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: 0;
  line-height: 1.6;
}

/* Article CTA */
.article-cta {
  text-align: center;
  padding: 3rem 2rem;
  background: linear-gradient(135deg, var(--accent-lighter), var(--cyan-light));
  border: 1px solid var(--accent-light);
  border-radius: 20px;
  margin: 3rem 0;
}

.article-cta h3 {
  font-size: var(--fs-xl);
  margin-bottom: 0.75rem;
}

.article-cta p {
  max-width: 480px;
  margin: 0 auto 1.5rem;
  font-size: var(--fs-sm);
}

/* TOC */
.toc {
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.5rem 2rem;
  margin: 2rem 0 3rem;
}

.toc h3 {
  font-size: var(--fs-base);
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.toc ol {
  padding-left: 1.25rem;
  margin-bottom: 0;
}

.toc li {
  font-size: var(--fs-sm);
  margin-bottom: 0.35rem;
  line-height: 1.5;
}

.toc a {
  color: var(--text-secondary);
  text-decoration: none;
}

.toc a:hover {
  color: var(--accent);
}

/* Last updated */
.last-updated {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  padding: 1rem 0;
  border-top: 1px solid var(--card-border);
  margin-top: 3rem;
}

/* ── Blog Listing Page ── */
.blog-hero {
  padding: calc(var(--nav-height) + 4rem) 0 3rem;
  background: var(--bg-hero);
  text-align: center;
}

.blog-listing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

@media (max-width: 1024px) {
  .blog-listing-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .blog-listing-grid { grid-template-columns: 1fr; }
  .author-card { flex-direction: column; text-align: center; align-items: center; }
  .page-hero .page-meta { flex-direction: column; gap: 0.5rem; }
}

/* ── Contact Form ── */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: 'Inter', sans-serif;
  font-size: var(--fs-base);
  border: 1.5px solid var(--card-border);
  border-radius: 12px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--bg);
}

.form-group textarea {
  min-height: 160px;
  resize: vertical;
}