/**
 * Atlas Vertical – Single post page
 * Video-first: hero → headline → meta → body
 */

.page-post {
  padding: var(--space-xl) 0 var(--space-3xl);
}

/* ---------------------------------------------------------------
   Post header: video hero + meta
   Mobile: stacked (hero on top, meta below, both centered).
   Desktop (768px+): side-by-side (hero left, meta right, left-aligned).
   --------------------------------------------------------------- */

.post-header {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 768px) {
  .post-header {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    padding: 0 var(--space-lg);
  }

  .post-header .post-hero {
    flex-shrink: 0;
    margin: 0;
    padding: 0;
    width: 340px;
    max-width: 340px;
  }

  .post-header__text {
    flex: 1;
    min-width: 0;
  }

  .post-header__text .post-meta {
    text-align: left;
    padding: 0;
    margin: 0;
  }

  .post-header__text .post-meta__details {
    justify-content: flex-start;
  }

  .post-header__text .post-meta__excerpt {
    max-width: 100%;
  }
}

@media (min-width: 1024px) {
  .post-header .post-hero {
    width: 380px;
    max-width: 380px;
  }
}

/* Post meta */
.post-meta {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-lg) var(--space-md) var(--space-xl);
  text-align: center;
}

.post-meta__title {
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-2xl);
  overflow-wrap: break-word;
  word-break: break-word;
}

.post-meta__author a {
  color: var(--color-text);
  font-weight: 600;
  text-decoration: none;
}

.post-meta__author a:hover {
  text-decoration: underline;
}

.post-meta__author,
.post-meta__date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.post-meta__author:empty {
  display: none;
}

/* Details row: date · reading time · copy link */
.post-meta__details {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.post-meta__separator {
  user-select: none;
}

.post-meta__reading-time {
  white-space: nowrap;
}

.post-meta__copy-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: var(--space-xs);
  padding: 2px var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: transparent;
  color: var(--color-text-muted);
  font-family: inherit;
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.post-meta__copy-link:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

.post-meta__copy-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.post-meta__copy-icon {
  flex-shrink: 0;
}

.post-meta__excerpt {
  margin-top: var(--space-md);
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  max-width: 540px;
  margin-inline: auto;
  overflow-wrap: break-word;
  word-break: break-word;
}

@media (min-width: 960px) {
  .post-meta__title {
    font-size: var(--font-size-3xl);
  }
}

/* -----------------------------------------------------------
   Post series navigation
   ----------------------------------------------------------- */

.post-series {
  max-width: var(--container-max);
  margin: 0 auto var(--space-lg);
  padding: var(--space-lg) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-alt);
}

.post-series__label {
  margin: 0 0 var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.post-series__list {
  margin: 0;
  padding: 0 0 0 var(--space-lg);
  list-style: decimal;
}

.post-series__item {
  padding: var(--space-xs) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.post-series__item--current {
  font-weight: 700;
  color: var(--color-text);
}

.post-series__link {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
  overflow-wrap: break-word;
  word-break: break-word;
}

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

.post-series__link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

.post-series__footer {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.post-series__footer:empty {
  display: none;
}

.post-series__prev,
.post-series__next {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

.post-series__prev:hover,
.post-series__next:hover {
  text-decoration: underline;
}

.post-series__next {
  margin-left: auto;
}

.post-series__prev:focus-visible,
.post-series__next:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Inline post CTA */
.post-cta {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}

.post-cta__link {
  display: inline-block;
  padding: var(--space-sm) var(--space-xl);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 6px;
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s;
}

.post-cta__link:hover {
  background-color: var(--color-accent);
  color: var(--color-on-accent);
  text-decoration: none;
}

.post-cta__link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Related posts */
.related-posts {
  max-width: var(--container-wide);
  margin-inline: auto;
  padding: var(--space-xl) var(--space-md);
}

.related-posts__title {
  margin-bottom: var(--space-lg);
  overflow-wrap: break-word;
  word-break: break-word;
}

.related-posts__grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .related-posts__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* -----------------------------------------------------------
   Reading progress bar
   ----------------------------------------------------------- */

.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--color-accent);
  z-index: 9999;
  pointer-events: none;
  transition: width 0.1s linear;
}

/* -----------------------------------------------------------
   Table of contents slot (server-rendered container)
   JS populates this with the TOC nav; hidden when empty.
   ----------------------------------------------------------- */

.post-toc-slot:empty {
  display: none;
}

/* -----------------------------------------------------------
   Table of contents (auto-generated from h2 elements)
   ----------------------------------------------------------- */

.post-toc {
  max-width: var(--container-max);
  margin: var(--space-2xl) auto var(--space-xl);
  padding: var(--space-lg) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg-alt);
}

.post-toc__title {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.post-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.post-toc__list li {
  margin: 0;
}

.post-toc__link {
  display: block;
  padding: var(--space-xs) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.2s;
  overflow-wrap: break-word;
  word-break: break-word;
}

.post-toc__link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.post-toc__link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------------------------------------------------------------
   Sticky share bar — ABC News inspired
   Fixed to left side of viewport, vertically stacked buttons.
   Hidden by default, JS adds .share-bar--visible when the reader
   scrolls past the post meta.
   --------------------------------------------------------------- */

.share-bar {
  position: fixed;
  left: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.share-bar--visible {
  opacity: 1;
  pointer-events: auto;
}

.share-bar__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
  position: relative;
}

.share-bar__btn:hover {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
  transform: scale(1.1);
}

.share-bar__btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.share-bar__icon {
  flex-shrink: 0;
}

/* "Copied!" tooltip — appears to the right of the copy button */
.share-bar__label {
  position: absolute;
  left: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  white-space: nowrap;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--color-text);
  color: var(--color-bg);
  font-size: var(--font-size-xs);
  font-family: inherit;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.share-bar__label--visible {
  opacity: 1;
}

/* On narrow screens, dock to bottom-right as a horizontal row */
@media (max-width: 1100px) {
  .share-bar {
    left: auto;
    right: var(--space-md);
    top: auto;
    bottom: var(--space-lg);
    transform: none;
    flex-direction: row;
  }

  .share-bar__label {
    left: 50%;
    top: auto;
    bottom: calc(100% + 10px);
    transform: translateX(-50%);
  }
}

@media (max-width: 480px) {
  .share-bar__btn {
    width: 40px;
    height: 40px;
  }
}