/* ============================================================================
   src/css/blog.css — Phase 3 blog styling
   All tokens come from /css/aurora-global.css. No font imports here.
   Loaded explicitly by src/blog.njk and src/_includes/blog/post.njk so the
   styling only ships on blog routes — keeps non-blog pages lean.
   ============================================================================ */

/* ----- Listing page ----- */

.blog-listing {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px var(--af-sp-5) 96px;
}

.blog-listing-header {
  text-align: center;
  margin-bottom: var(--af-sp-7);
}

.blog-listing-title {
  font-family: var(--af-font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  color: var(--af-ink);
  letter-spacing: -0.025em;
  margin: 0 0 var(--af-sp-3);
}

.blog-listing-subtitle {
  font-family: var(--af-font-body);
  font-size: 17px;
  color: var(--af-ink-soft);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.55;
}

/* ----- Empty state ----- */

.blog-empty-state {
  text-align: center;
  padding: var(--af-sp-8) var(--af-sp-5);
  background: var(--af-surface);
  border: 1px solid var(--af-border);
  border-radius: var(--af-r-lg);
  max-width: 560px;
  margin: 0 auto;
}

.blog-empty-state p {
  font-family: var(--af-font-body);
  font-size: 16px;
  color: var(--af-ink-soft);
  margin: 0 0 var(--af-sp-4);
}

.blog-empty-feed-link {
  display: inline-block;
  padding: 10px 18px;
  background: var(--af-indigo);
  color: #FFFFFF;
  border-radius: var(--af-r-pill);
  font-family: var(--af-font-body);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: transform var(--af-dur-fast) var(--af-ease);
}

.blog-empty-feed-link:hover { transform: translateY(-1px); }

/* ----- Featured post ----- */

.blog-featured {
  margin-bottom: var(--af-sp-7);
}

.blog-featured-link {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--af-sp-6);
  background: var(--af-surface);
  border: 1px solid var(--af-border);
  border-radius: var(--af-r-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--af-shadow-md);
  transition: transform var(--af-dur) var(--af-ease),
              box-shadow var(--af-dur) var(--af-ease);
}

.blog-featured-link:hover {
  transform: translateY(-4px);
  box-shadow: var(--af-shadow-lg);
}

.blog-featured-image {
  position: relative;
  margin: 0;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.blog-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.blog-featured-badge {
  position: absolute;
  top: var(--af-sp-3);
  inset-inline-start: var(--af-sp-3);
  padding: 4px 12px;
  background: var(--af-indigo);
  color: #FFFFFF;
  border-radius: var(--af-r-pill);
  font-family: var(--af-font-body);
  font-size: var(--af-tiny);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.blog-featured-content {
  padding: var(--af-sp-6);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--af-sp-3);
}

.blog-featured-title {
  font-family: var(--af-font-display);
  font-size: 28px;
  font-weight: 800;
  color: var(--af-ink);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0;
}

.blog-featured-description {
  font-family: var(--af-font-body);
  font-size: 16px;
  color: var(--af-ink-soft);
  line-height: 1.6;
  margin: 0;
}

.blog-featured-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--af-font-body);
  font-size: var(--af-small);
  color: var(--af-ink-faint);
  margin-top: auto;
  padding-top: var(--af-sp-3);
  border-top: 1px solid var(--af-border);
}

.blog-featured-readmore {
  color: var(--af-indigo-deep);
  font-weight: 700;
}

/* ----- Grid of remaining posts ----- */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--af-sp-5);
}

.blog-card {
  display: block;
}

.blog-card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--af-surface);
  border: 1px solid var(--af-border);
  border-radius: var(--af-r-md);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--af-shadow-xs);
  transition: transform var(--af-dur) var(--af-ease),
              box-shadow var(--af-dur) var(--af-ease);
}

.blog-card-link:hover {
  transform: translateY(-3px);
  box-shadow: var(--af-shadow-md);
}

.blog-card-image {
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.blog-card-content {
  padding: var(--af-sp-4);
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: var(--af-sp-2);
}

.blog-card-title {
  font-family: var(--af-font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--af-ink);
  letter-spacing: -0.005em;
  line-height: 1.3;
  margin: 0;
}

.blog-card-description {
  font-family: var(--af-font-body);
  font-size: 14px;
  color: var(--af-ink-soft);
  line-height: 1.55;
  margin: 0;
  flex: 1;
}

.blog-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--af-font-body);
  font-size: var(--af-tiny);
  color: var(--af-ink-faint);
  margin-top: var(--af-sp-2);
}

.blog-card-readmore {
  color: var(--af-indigo-deep);
  font-weight: 700;
}

/* ----- Per-post page ----- */

.post {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px var(--af-sp-5) 96px;
}

.post-header {
  margin-bottom: var(--af-sp-7);
}

.post-eyebrow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--af-sp-2);
  font-family: var(--af-font-body);
  font-size: var(--af-small);
  color: var(--af-ink-faint);
  margin-bottom: var(--af-sp-4);
}

.post-eyebrow-link {
  color: var(--af-indigo-deep);
  font-weight: 700;
  text-decoration: none;
}

.post-eyebrow-link:hover { text-decoration: underline; }

.post-eyebrow-sep { color: var(--af-border-strong); }

.post-eyebrow-updated { color: var(--af-emerald-deep); font-weight: 600; }

.post-title {
  font-family: var(--af-font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  color: var(--af-ink);
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 var(--af-sp-3);
}

.post-description {
  font-family: var(--af-font-body);
  font-size: 19px;
  color: var(--af-ink-soft);
  line-height: 1.55;
  margin: 0 0 var(--af-sp-5);
}

.post-byline {
  display: flex;
  align-items: center;
  gap: var(--af-sp-3);
}

.post-byline-avatar img {
  border-radius: 50%;
  background: var(--af-surface-muted);
}

.post-byline-name {
  font-family: var(--af-font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--af-ink);
}

.post-hero {
  margin: 0 0 var(--af-sp-7);
}

.post-hero img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--af-r-md);
}

/* ----- Article body — Markdown-rendered ----- */

.post-body {
  font-family: var(--af-font-body);
  font-size: 18px;
  line-height: 1.75;
  color: var(--af-ink);
}

.post-body > * + * { margin-top: var(--af-sp-4); }

.post-body h2 {
  font-family: var(--af-font-display);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--af-ink);
  margin-top: var(--af-sp-7);
}

.post-body h3 {
  font-family: var(--af-font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--af-ink);
  margin-top: var(--af-sp-5);
}

.post-body p { margin: 0; }

.post-body a {
  color: var(--af-indigo-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.post-body ul, .post-body ol {
  padding-inline-start: var(--af-sp-5);
}

.post-body li + li { margin-top: var(--af-sp-2); }

.post-body blockquote {
  padding: var(--af-sp-4) var(--af-sp-5);
  background: var(--af-surface-muted);
  border-inline-start: 4px solid var(--af-indigo);
  border-radius: var(--af-r-sm);
  font-style: italic;
  color: var(--af-ink-soft);
}

.post-body code {
  font-family: var(--af-font-mono);
  font-size: 0.92em;
  background: var(--af-surface-muted);
  padding: 2px 6px;
  border-radius: 4px;
}

.post-body pre {
  font-family: var(--af-font-mono);
  background: var(--af-ink);
  color: #FFFFFF;
  padding: var(--af-sp-4);
  border-radius: var(--af-r-sm);
  overflow-x: auto;
}

.post-body pre code { background: none; padding: 0; color: inherit; }

.post-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--af-r-sm);
}

.post-body table {
  border-collapse: collapse;
  width: 100%;
}

.post-body table th,
.post-body table td {
  padding: var(--af-sp-2) var(--af-sp-3);
  text-align: start;
  border-bottom: 1px solid var(--af-border);
}

.post-body table th {
  background: var(--af-surface-muted);
  font-weight: 700;
}

/* ----- Per-post footer block (author, related, CTA) ----- */

.post-footer {
  margin-top: var(--af-sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--af-sp-6);
}

.post-author-card {
  background: var(--af-surface);
  border: 1px solid var(--af-border);
  border-radius: var(--af-r-md);
  padding: var(--af-sp-5);
}

.post-author-card-title {
  font-family: var(--af-font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--af-ink);
  margin: 0 0 var(--af-sp-3);
}

.post-author-card-bio {
  font-family: var(--af-font-body);
  font-size: 15px;
  color: var(--af-ink-soft);
  line-height: 1.6;
  margin: 0;
}

.post-related {
  background: var(--af-bg);
}

.post-related-title {
  font-family: var(--af-font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--af-ink);
  margin: 0 0 var(--af-sp-4);
  text-align: center;
}

.post-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--af-sp-4);
}

.post-related-card {
  display: flex;
  flex-direction: column;
  background: var(--af-surface);
  border: 1px solid var(--af-border);
  border-radius: var(--af-r-sm);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform var(--af-dur-fast) var(--af-ease);
}

.post-related-card:hover { transform: translateY(-2px); }

.post-related-card-image {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.post-related-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.post-related-card-title {
  font-family: var(--af-font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--af-ink);
  margin: var(--af-sp-3) var(--af-sp-3) var(--af-sp-2);
  line-height: 1.35;
}

.post-related-card-date {
  font-family: var(--af-font-body);
  font-size: var(--af-tiny);
  color: var(--af-ink-faint);
  margin: 0 var(--af-sp-3) var(--af-sp-3);
}

.post-cta {
  background: linear-gradient(135deg, var(--af-indigo) 0%, var(--af-indigo-deep) 100%);
  color: #FFFFFF;
  text-align: center;
  padding: var(--af-sp-7) var(--af-sp-5);
  border-radius: var(--af-r-lg);
  box-shadow: var(--af-glow-indigo), var(--af-shadow-md);
}

.post-cta-title {
  font-family: var(--af-font-display);
  font-size: 24px;
  font-weight: 800;
  color: #FFFFFF;
  margin: 0 0 var(--af-sp-3);
  letter-spacing: -0.015em;
}

.post-cta-subtitle {
  font-family: var(--af-font-body);
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin: 0 0 var(--af-sp-4);
}

.post-cta-button {
  background: #FFFFFF !important;
  color: var(--af-indigo-deep) !important;
  border: none;
}

.post-cta-button:hover {
  background: rgba(255, 255, 255, 0.92) !important;
  transform: translateY(-1px);
}

/* ----- Responsive ----- */

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

@media (max-width: 768px) {
  .blog-listing { padding: 48px var(--af-sp-4) 72px; }
  .blog-grid { grid-template-columns: 1fr; }
  .post { padding: 40px var(--af-sp-4) 72px; }
  .post-body { font-size: 16px; }
  .post-body h2 { font-size: 24px; }
  .post-body h3 { font-size: 18px; }
  .post-related-grid { grid-template-columns: 1fr; }
}

/* ============================================================================
   Phase 4b — Engagement surface: social share + newsletter signup
   Loaded on the post page only via blog/post.njk's stylesheet link.
   ============================================================================ */

.post-share {
  margin-top: var(--af-sp-6);
  padding-top: var(--af-sp-5);
  border-top: 1px solid var(--af-border);
}

.post-share-title {
  font-family: var(--af-font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--af-ink-soft);
  margin: 0 0 var(--af-sp-3);
  letter-spacing: 0.02em;
}

.post-share-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--af-sp-2);
  align-items: center;
}

.post-share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--af-sp-2);
  width: 44px;
  height: 44px;
  background: var(--af-surface-muted);
  color: var(--af-ink-soft);
  border: 1px solid var(--af-border);
  border-radius: 50%;
  text-decoration: none;
  cursor: pointer;
  font-family: var(--af-font-body);
  font-size: 13px;
  font-weight: 600;
  transition: transform 120ms ease, background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.post-share-btn:hover {
  transform: translateY(-2px);
  color: #fff;
}

.post-share-x:hover         { background: #000000; border-color: #000000; }
.post-share-whatsapp:hover  { background: #25D366; border-color: #25D366; }
.post-share-linkedin:hover  { background: #0A66C2; border-color: #0A66C2; }
.post-share-facebook:hover  { background: #1877F2; border-color: #1877F2; }
.post-share-copy:hover      { background: var(--af-indigo); border-color: var(--af-indigo); color: #fff; }

.post-share-copy {
  width: auto;
  padding: 0 var(--af-sp-3);
  border-radius: var(--af-r-pill);
}

.post-share-copy-label {
  display: inline-block;
  white-space: nowrap;
}

.post-newsletter {
  margin-top: var(--af-sp-6);
  padding: var(--af-sp-6);
  background: var(--af-surface);
  border: 1px solid var(--af-border);
  border-radius: var(--af-r-md);
  text-align: center;
}

.post-newsletter-title {
  font-family: var(--af-font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--af-ink);
  margin: 0 0 var(--af-sp-2);
  letter-spacing: -0.005em;
}

.post-newsletter-subtitle {
  font-family: var(--af-font-body);
  font-size: 15px;
  color: var(--af-ink-soft);
  line-height: 1.6;
  margin: 0 auto var(--af-sp-4);
  max-width: 480px;
}

.post-newsletter-form {
  display: flex;
  flex-direction: column;
  gap: var(--af-sp-2);
  align-items: stretch;
  max-width: 480px;
  margin: 0 auto;
}

.post-newsletter-input {
  padding: 12px 14px;
  border: 1px solid var(--af-border);
  border-radius: var(--af-r-sm);
  font-family: var(--af-font-body);
  font-size: 15px;
  background: var(--af-surface);
  color: var(--af-ink);
  outline: none;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

.post-newsletter-input:focus {
  border-color: var(--af-indigo);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.post-newsletter-consent {
  font-family: var(--af-font-body);
  font-size: 12px;
  color: var(--af-ink-faint);
  line-height: 1.55;
  margin: var(--af-sp-2) 0;
  text-align: start;
}

.post-newsletter-submit {
  width: 100%;
}

.post-newsletter-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.post-newsletter-status {
  margin-top: var(--af-sp-3);
  font-family: var(--af-font-body);
  font-size: 14px;
  color: var(--af-ink-soft);
  min-height: 1.5em;
}

@media (max-width: 480px) {
  .post-newsletter { padding: var(--af-sp-5) var(--af-sp-4); }
  .post-newsletter-title { font-size: 18px; }
  .post-newsletter-subtitle { font-size: 14px; }
  .post-share-copy { padding: 0 var(--af-sp-2); font-size: 12px; }
}