/* =========================
   BLOG SINGLE POST
   ========================= */

/* Scroll progress bar (fixed top line) */
.scroll-progress {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 50;
  height: 0.25rem;
  background: transparent;
  pointer-events: none;
}

.scroll-progress__bar {
  height: 100%;
  width: 0;
  background: linear-gradient(to right, var(--primary), var(--accent));
  transition: width 150ms linear;
}

/* Post hero */
.post-hero {
  padding-top: 8rem;
  padding-bottom: 2rem;
}

.post-hero__inner {
  margin-inline: auto;
  max-width: var(--container-3xl);
  padding-inline: 1rem;
}

/* Breadcrumbs — moved to blog.css in Phase 4.4.5 (shared by all blog pages) */

.post-hero__inner .tag {
  display: inline-block;
  margin-top: 1.5rem;
  color: var(--primary);
}

.post-hero__title {
  margin-top: 1rem;
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.05;
}

@media (min-width: 640px) {
  .post-hero__title {
    font-size: var(--text-5xl);
  }
}

.post-hero__excerpt {
  margin-top: 1rem;
  font-size: var(--text-lg);
  color: var(--muted-foreground);
}

.post-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  column-gap: 1.5rem;
  row-gap: 0.5rem;
  margin-top: 1.5rem;
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

.post-hero__name {
  font-weight: var(--font-weight-medium);
  color: var(--foreground);
}

/* Phase 4.3.3 — author byline (avatar/initials + name + title) */
.post-hero__author {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  min-width: 0;
}

/* Phase 4.3.6 — clickable author identity (clean /author/{id}/ link).
   Subtle interaction only: existing visuals preserved, focus ring follows
   the site pattern. Date/read-time remain outside the link. */
a.post-hero__author {
  text-decoration: none;
  border-radius: 9999px;
  transition: opacity var(--transition, 150ms linear);
}

a.post-hero__author:hover {
  opacity: 0.8;
}

a.post-hero__author:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 4px;
}

.post-hero__avatar {
  height: 2.5rem;
  width: 2.5rem;
  flex-shrink: 0;
  border-radius: 9999px;
  object-fit: cover;
  background: var(--primary);
}

.post-hero__avatar--initials {
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: #ffffff;
}

.post-hero__author-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.post-hero__author-role {
  color: var(--primary);
}

.post-hero__meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.post-hero__meta-item svg {
  height: 1rem;
  width: 1rem;
}

.post-hero__cover {
  margin-top: 2rem;
  width: 100%;
  aspect-ratio: var(--aspect-video);
  object-fit: cover;
  border-radius: calc(var(--radius) + 12px);
  border: 1px solid var(--border);
}

/* Table of contents */
.toc {
  margin-top: 2.5rem;
  border-radius: calc(var(--radius) + 12px);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.5rem;
}

.toc-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--foreground);
}

.toc-icon {
  height: 1rem;
  width: 1rem;
  color: var(--primary);
}

.toc-list {
  margin-top: 1rem;
  display: grid;
  gap: 0.5rem;
}

.toc-link {
  display: flex;
  gap: 0.75rem;
  font-size: var(--text-sm);
  color: var(--muted-foreground);
  transition: color var(--transition);
}

.toc-link:hover {
  color: var(--primary);
}

.toc-link.is-active {
  color: var(--primary);
}

.toc-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.toc.is-hidden {
  display: none;
}

.toc-num {
  font-weight: var(--font-weight-semibold);
  color: var(--primary);
}

/* Article column */
.post {
  display: grid;
  gap: 1.5rem;
  margin-inline: auto;
  max-width: var(--container-3xl);
  padding: 2rem 1rem 0;
}

/* Phase 4.5.1 — CMS body content (bare editor elements) */
.post-body {
  display: grid;
  gap: 1rem;
}

.post-body h2 {
  margin-top: 1.5rem;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  scroll-margin-top: 7rem;
}

.post-body p {
  line-height: var(--leading-relaxed);
  color: var(--muted-foreground);
}

.post-body ul,
.post-body ol {
  margin: 0;
  padding-left: 1.5rem;
  display: grid;
  gap: 0.5rem;
  color: var(--muted-foreground);
}

.post-body li {
  line-height: var(--leading-relaxed);
}

.post-body img {
  max-width: 100%;
  height: auto;
  border-radius: calc(var(--radius) + 8px);
}

.post-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.post-body a:hover {
  color: var(--primary-glow);
}

.post-body blockquote {
  margin: 0;
  border-left: 3px solid var(--primary);
  padding: 0.25rem 0 0.25rem 1rem;
  color: var(--muted-foreground);
}

/* Dynamic post page (no .post-hero) — clears the fixed blog header */
.post-main {
  padding-top: 7rem;
}

/* Star rating active state (JS) */
.rv-star.is-active svg {
  color: var(--primary);
  fill: var(--primary);
}

/* Article body */
.post-sec {
  scroll-margin-top: 7rem;
}

.post-h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
}

.post-p {
  margin-top: 1rem;
  line-height: var(--leading-relaxed);
  color: var(--muted-foreground);
}

/* Bullet list with primary dots */
.dot-list {
  margin-top: 1rem;
  display: grid;
  gap: 0.5rem;
}

.dot-list li {
  display: flex;
  gap: 0.75rem;
  color: var(--muted-foreground);
}

.dot {
  margin-top: 0.5rem;
  height: 0.375rem;
  width: 0.375rem;
  flex-shrink: 0;
  border-radius: 9999px;
  background: var(--primary);
}

/* Key takeaways card */
.takeaways {
  border-radius: calc(var(--radius) + 12px);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.5rem;
}

.takeaways-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
}

.takeaways-list {
  margin-top: 1rem;
  display: grid;
  gap: 0.5rem;
}

.takeaways-list li {
  display: flex;
  gap: 0.75rem;
  font-size: var(--text-sm);
  color: color-mix(in oklab, var(--foreground) 90%, transparent);
}

.takeaways-num {
  font-weight: var(--font-weight-semibold);
  color: var(--primary);
}

/* Tags + share footer */
.post-meta {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding-block: 1.5rem;
}

@media (min-width: 640px) {
  .post-meta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 0.125rem 0.625rem;
  font-size: var(--text-xs);
  color: var(--muted-foreground);
}

.share {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.share-label {
  margin-right: 0.25rem;
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

.share-btn {
  display: grid;
  place-items: center;
  height: 2.25rem;
  width: 2.25rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted-foreground);
  cursor: pointer;
  transition:
    color var(--transition),
    border-color var(--transition);
}

.share-btn:hover {
  border-color: color-mix(in oklab, var(--primary) 50%, transparent);
  color: var(--primary);
}

.share-btn svg {
  height: 1rem;
  width: 1rem;
}

/* =========================
   ARTICLE TTS PLAYER (Phase 4.3.11)
   ========================= */
.article-tts {
  border-radius: calc(var(--radius) + 12px);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.5rem;
  margin-top: 1.5rem;
}

.article-tts.is-hidden {
  display: none;
}

.article-tts__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.article-tts__icon {
  height: 1.25rem;
  width: 1.25rem;
  color: var(--primary);
  flex-shrink: 0;
}

.article-tts__label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--foreground);
}

.article-tts__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.article-tts__control {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 0.5rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--foreground);
  cursor: pointer;
  transition:
    border-color var(--transition, 150ms),
    background var(--transition, 150ms),
    color var(--transition, 150ms);
}

.article-tts__control:hover:not(:disabled) {
  border-color: color-mix(in oklab, var(--primary) 50%, transparent);
  color: var(--primary);
}

.article-tts__control:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.article-tts__control:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.article-tts__control svg {
  height: 0.875rem;
  width: 0.875rem;
  flex-shrink: 0;
}

.article-tts__status-row {
  margin-top: 0.5rem;
}

.article-tts__status {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--muted-foreground);
}

.article-tts__settings {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.article-tts__setting {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-tts__setting-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--muted-foreground);
  flex-shrink: 0;
}

.article-tts__select {
  border-radius: calc(var(--radius) + 2px);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 0.375rem 0.625rem;
  font-size: var(--text-xs);
  color: var(--foreground);
  outline: none;
  transition: border-color var(--transition, 150ms);
}

.article-tts__select:focus {
  border-color: color-mix(in oklab, var(--primary) 60%, transparent);
}

.article-tts__select.is-hidden {
  display: none;
}

/* Author card */
.author {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  border-radius: calc(var(--radius) + 12px);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.5rem;
}

.author-avatar {
  display: grid;
  place-items: center;
  height: 3.5rem;
  width: 3.5rem;
  flex-shrink: 0;
  border-radius: 9999px;
  background: linear-gradient(to bottom right, var(--primary), var(--accent));
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  color: var(--primary-foreground);
  /* Phase 4.3.9 — <img> avatar compatibility (initials <div> unchanged) */
  object-fit: cover;
}

.author-name-link {
  color: inherit;
  text-decoration: none;
  transition: color 300ms var(--ease-in-out);
}

.author-name-link:hover {
  color: var(--primary);
}

.author-name-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

.author-name {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--foreground);
}

.author-role {
  font-size: var(--text-sm);
  color: var(--primary);
}

.author-bio {
  margin-top: 0.5rem;
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

/* Comments */
.comments {
  margin-inline: auto;
  max-width: var(--container-3xl);
  padding: 4rem 1rem;
}

.comments-count {
  margin-top: 1rem;
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

.comments-list {
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
}

.comments-empty {
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

.comment-item {
  border-radius: calc(var(--radius) + 8px);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.25rem 1.5rem;
}

.comment-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.comment-author {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--foreground);
}

.comment-date {
  font-size: var(--text-xs);
  color: var(--muted-foreground);
}

.comment-text {
  margin-top: 0.5rem;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--muted-foreground);
}

.comment-form {
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
  border-radius: calc(var(--radius) + 12px);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.5rem;
}

.comment-form-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
}

.comment-hp {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

.comment-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .comment-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.comment-label {
  display: block;
  margin-bottom: 0.375rem;
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

.comment-label .required {
  color: var(--primary);
}

.comment-note {
  font-size: var(--text-xs);
}

.comment-input,
.comment-textarea {
  width: 100%;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 0.5rem 0.75rem;
  font-size: var(--text-sm);
  color: var(--foreground);
  outline: none;
  transition: border-color var(--transition);
}

.comment-input:focus,
.comment-textarea:focus {
  border-color: color-mix(in oklab, var(--primary) 60%, transparent);
}

.comment-input.is-invalid,
.comment-textarea.is-invalid {
  border-color: color-mix(in oklab, var(--destructive, #e11d48) 60%, transparent);
}

.comment-textarea {
  resize: vertical;
}

.comment-error {
  margin-top: 0.375rem;
  font-size: var(--text-xs);
  color: var(--destructive, #e11d48);
}

.comment-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: calc(var(--radius) + 4px);
  background: var(--primary);
  padding: 0.625rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--primary-foreground);
  cursor: pointer;
  transition: background var(--transition);
}

.comment-submit:hover {
  background: color-mix(in oklab, var(--primary) 90%, transparent);
}

.comment-submit:disabled {
  opacity: 0.6;
}

.comment-success {
  font-size: var(--text-sm);
  color: var(--success, #10b981);
}

.comments-closed {
  margin-top: 1.5rem;
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

/* Reviews */
.reviews {
  margin-inline: auto;
  max-width: var(--container-3xl);
  padding: 4rem 1rem;
}

.rv-form {
  margin-top: 1.5rem;
  display: grid;
  gap: 1rem;
  border-radius: calc(var(--radius) + 12px);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.5rem;
}

.rv-form-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
}

.rv-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .rv-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.rv-label {
  display: block;
  margin-bottom: 0.375rem;
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

.rv-note {
  font-size: var(--text-xs);
}

.rv-input,
.rv-textarea {
  width: 100%;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 0.5rem 0.75rem;
  font-size: var(--text-sm);
  color: var(--foreground);
  outline: none;
  transition: border-color var(--transition);
}

.rv-input:focus,
.rv-textarea:focus {
  border-color: color-mix(in oklab, var(--primary) 60%, transparent);
}

.rv-textarea {
  resize: vertical;
}

.rv-stars {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}

.rv-star {
  border: none;
  background: none;
  cursor: pointer;
  transition: transform var(--transition);
}

.rv-star:hover {
  transform: scale(1.1);
}

.rv-star svg {
  height: 1.75rem;
  width: 1.75rem;
  color: color-mix(in oklab, var(--muted-foreground) 40%, transparent);
}

.rv-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: calc(var(--radius) + 4px);
  background: var(--primary);
  padding: 0.625rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--primary-foreground);
  cursor: pointer;
  transition: background var(--transition);
}

.rv-submit:hover {
  background: color-mix(in oklab, var(--primary) 90%, transparent);
}

.rv-submit:disabled {
  opacity: 0.6;
}

.rv-list {
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
}

.rv-empty {
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

/* Related posts */
.related {
  margin-inline: auto;
  max-width: var(--container-7xl);
  padding: 4rem 1rem;
}

.rel-grid {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .rel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.rel-card {
  display: block;
  height: 100%;
  overflow: hidden;
  border-radius: calc(var(--radius) + 12px);
  border: 1px solid var(--border);
  background: var(--card);
  transition: border-color var(--transition);
}

.rel-card:hover {
  border-color: color-mix(in oklab, var(--primary) 40%, transparent);
}

.rel-img {
  aspect-ratio: var(--aspect-video);
  width: 100%;
  object-fit: cover;
}

.rel-body {
  padding: 1.5rem;
}

.rel-title {
  margin-top: 0.75rem;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--leading-tight);
}

.rel-link {
  margin-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--primary);
  transition: color var(--transition);
}

.rel-card:hover .rel-link {
  color: var(--primary-glow);
}

.rel-arrow {
  height: 1rem;
  width: 1rem;
}

/* Scroll-reveal (JS adds .is-visible) */
.reveal {
  opacity: 0;
  transform: translateY(24px);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.6s var(--ease-in-out),
    transform 0.6s var(--ease-in-out);
}

/* Newsletter CTA */
.cta {
  position: relative;
  padding-block: 5rem;
}

.cta-inner {
  margin-inline: auto;
  max-width: var(--container-4xl);
  padding-inline: 1rem;
}

.cta-card {
  position: relative;
  overflow: hidden;
  border-radius: calc(var(--radius) + 12px);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 2rem;
  text-align: center;
}

@media (min-width: 768px) {
  .cta-card {
    padding: 3rem;
  }
}

.cta-glow {
  position: absolute;
  top: -5rem;
  right: -5rem;
  height: 18rem;
  width: 18rem;
  border-radius: 9999px;
  background: color-mix(in oklab, var(--primary) 20%, transparent);
  filter: blur(var(--blur-3xl));
  pointer-events: none;
}

.cta-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--primary);
}

.cta-title {
  margin-top: 0.75rem;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
}

@media (min-width: 640px) {
  .cta-title {
    font-size: var(--text-4xl);
  }
}

.cta-desc {
  margin: 0.75rem auto 0;
  max-width: var(--container-xl);
  font-size: var(--text-sm);
  color: var(--muted-foreground);
}

.cta-form {
  margin: 1.75rem auto 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: var(--container-md);
}

@media (min-width: 640px) {
  .cta-form {
    flex-direction: row;
  }
}

.cta-input {
  min-width: 0;
  flex: 1;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 60%, transparent);
  padding: 0.75rem 1.25rem;
  font-size: var(--text-sm);
  color: var(--foreground);
  outline: none;
  transition: border-color var(--transition);
}

.cta-input:focus {
  border-color: color-mix(in oklab, var(--primary) 60%, transparent);
}

.cta-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  border-radius: 9999px;
  background: var(--primary);
  padding: 0.75rem 1.5rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--primary-foreground);
  cursor: pointer;
  box-shadow: 0 0 30px -8px oklch(0.62 0.22 25 / 0.7);
  transition: background var(--transition);
}

.cta-submit:hover {
  background: var(--primary-glow);
}

.cta-submit:disabled {
  opacity: 0.6;
}

.cta-submit svg {
  height: 1rem;
  width: 1rem;
}