/* ============================================================
   Blog Post Layout — Ramin Khaligh (blog-post.css)
   Loaded only by individual article pages (/blog/*.html).
   Shares tokens and .card/.btn/.breadcrumb-list with style.css.
   ============================================================ */

/* ===== Page shell ===== */
main.container {
  padding-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

/* ===== Breadcrumb (article width, not the sitewide 1100px container) ===== */
.breadcrumb-nav {
  max-width: 760px;
  margin: 0 auto 1rem;
  padding-inline: var(--gutter);
}

/* ===== Article Card ===== */
article.card {
  width: 100%;
  max-width: 760px;
  margin: 0 auto 3rem;
  padding: 2rem;
}

article.card img {
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2rem;
  display: block;
}

/* ===== Post header (title, excerpt, meta row) ===== */
.post-header { margin-bottom: 2rem; }
.post-header__excerpt { color: var(--muted); font-size: 1.05rem; line-height: 1.6; margin: 0.6rem 0 1rem; }
.post-header__meta {
  color: var(--muted);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
}

#read-time { color: var(--accent); font-weight: 500; }

/* ===== Typography ===== */
article.card h2 {
  margin-top: 2.2rem;
  margin-bottom: 0.75rem;
  color: var(--ink);
  scroll-margin-top: 6rem;
}

article.card p { line-height: 1.75; margin-bottom: 1.1rem; }
article.card ul { line-height: 1.75; margin: 0 0 1.1rem; padding-inline-start: 1.3rem; }
article.card li { margin-bottom: 0.4rem; }
article.card strong { color: var(--ink); }

/* ===== Blockquotes ===== */
blockquote {
  position: relative;
  margin: 1.75rem 0;
  padding: 1.25rem 1.5rem 1.25rem 2.25rem;
  border-inline-start: 3px solid var(--accent);
  border-radius: var(--radius-s);
  background: var(--glass);
  color: var(--ink);
  font-size: 1.05rem;
  font-style: italic;
  line-height: 1.6;
}

blockquote::before {
  content: "\201C";
  position: absolute;
  top: 0.4rem;
  left: 0.6rem;
  font-size: 2rem;
  line-height: 1;
  font-style: normal;
  color: var(--accent);
  opacity: 0.6;
}

/* ===== Table of Contents ===== */
#table-of-contents {
  position: sticky;
  top: 6rem;
  background: var(--elev-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 1.1rem 1.25rem;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

#table-of-contents strong {
  display: block;
  margin-bottom: 0.6rem;
  color: var(--accent);
  font-weight: 600;
}

#table-of-contents ul { list-style: none; margin: 0; padding: 0; }
#table-of-contents li { margin-bottom: 0.5rem; line-height: 1.5; }

#table-of-contents a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

#table-of-contents a:hover,
#table-of-contents a.active {
  color: var(--accent);
}

/* Hide TOC until the two-column grid below can fit it side-by-side, otherwise
   it fights the article for space in the flex row (squished tablet layout). */
@media (max-width: 1099px) {
  #table-of-contents { display: none; }
}

/* ===== Two-Column Layout (article + sticky TOC sidebar) ===== */
@media (min-width: 1100px) {
  main.container.two-column {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
    align-items: start;
  }

  .sidebar { position: sticky; top: 6rem; height: fit-content; }
}

/* ===== Author Profile ===== */
.author-profile {
  margin-top: 3rem;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--elev-1);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 1.2rem;
  transition: border-color 0.3s var(--ease);
}

.author-profile:hover { border-color: color-mix(in oklab, var(--line), var(--accent) 40%); }

article.card .author-avatar {
  flex-shrink: 0;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  object-fit: cover;
  border: 2px solid var(--accent);
  margin-bottom: 0;
}

.author-info p { margin: 0 0 0.3rem; line-height: 1.4; }
.author-info p:last-child { margin-bottom: 0; color: var(--muted); }
.author-info a { color: var(--accent); text-decoration: none; font-weight: 600; }
.author-info a:hover { text-decoration: underline; }

/* ===== Share Button (icon-button variant in the post meta row) ===== */
.share-btn {
  background: none;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem;
  border-radius: var(--radius-s);
  transition: background 0.25s var(--ease), transform 0.2s var(--ease);
}

.share-btn:hover { background: var(--glass); transform: translateY(-1px); }
.share-copied { font-size: 0.8rem; color: var(--accent); font-weight: 500; }

/* ===== Closing CTA + trust microcopy ===== */
.cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 2.5rem;
}

.cta .btn { padding: 0.6rem 1.2rem; font-size: 0.95rem; }

.cta + .hero__trust { margin-top: 0.75rem; text-align: center; }

@media (max-width: 600px) {
  .cta { flex-direction: column-reverse; align-items: stretch; gap: 0.6rem; }
}

/* ===== Smooth Lazy Image Load ===== */
img[loading="lazy"] { transition: opacity 0.3s var(--ease); opacity: 0; }
img[loading="lazy"].loaded { opacity: 1; }

/* ===== Reading Progress Bar ===== */
#reading-progress {
  position: fixed;
  top: 0;
  inset-inline-start: 0;
  height: 3px;
  width: 0;
  background: var(--accent);
  z-index: 9999;
  transition: width 0.1s ease-out, opacity 0.3s var(--ease);
  opacity: 0;
}

#reading-progress.active { opacity: 1; }

/* ===== Utility: Selection ===== */
::selection { background: var(--accent); color: #fff; }

/* ===== Responsive Adjustments ===== */
@media (min-width: 1000px) {
  article.card { max-width: 640px; }
  .breadcrumb-nav { max-width: 640px; }
  article.card img { max-height: 320px; }
}

@media (max-width: 768px) {
  article.card { padding: 1.5rem; }
}

@media (max-width: 600px) {
  .author-profile { flex-direction: column; align-items: flex-start; padding: 1.2rem; }
  article.card .author-avatar { width: 56px; height: 56px; }
}