/* ==========================================================================
   Article Detail page ("جزئیات مقاله") — styles
   ========================================================================== */

/* ---------- Reading progress bar ---------- */
.reading-progress-bar {
  position: fixed; top: 0; inset-inline: 0; height: 3px; z-index: 1040;
  background: transparent;
}
.reading-progress-bar .fill {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  transition: width 80ms linear;
}

/* ---------- Thin breadcrumb bar ---------- */
.article-breadcrumb-bar {
  padding-top: calc(var(--header-height) + 1.1rem);
  padding-bottom: 1.1rem;
  background: var(--color-surface-alt);
}

/* ---------- Cover hero ---------- */
.article-cover {
  position: relative;
  height: clamp(320px, 46vw, 480px);
  overflow: hidden;
}
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-cover::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(16,32,28,0.88) 5%, rgba(16,32,28,0.35) 55%, transparent 100%);
}
.article-cover-content {
  position: absolute; inset-inline: 0; bottom: 0; z-index: 2;
  padding-block: 2.5rem;
  color: #fff;
}
.article-cover-content .badge {
  background: var(--color-gold); color: #2b2210; font-weight: 700; font-size: 0.78rem;
  padding: 0.35rem 0.9rem; border-radius: var(--radius-pill); margin-bottom: 1rem; display: inline-block;
}
.article-cover-content h1 { color: #fff; font-size: clamp(1.5rem, 3.4vw, 2.5rem); margin-bottom: 1.1rem; max-width: 900px; }
.article-cover-meta { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; font-size: 0.88rem; opacity: 0.9; }
.article-cover-meta .author-chip { display: flex; align-items: center; gap: 0.6rem; }
.article-cover-meta .author-chip img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; border: 2px solid rgba(255,255,255,0.5); }

/* ---------- Layout ---------- */
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 3rem; align-items: start; }
@media (max-width: 991.98px) {
  .article-layout { grid-template-columns: 1fr; }
}

/* ---------- Article body ---------- */
.article-body { font-size: 1.05rem; line-height: 2; color: var(--color-text); max-width: 720px; }
.article-body section { scroll-margin-top: calc(var(--header-height) + 1.5rem); margin-bottom: 2.5rem; }
.article-body h2 { font-size: 1.4rem; margin-bottom: 1rem; display: flex; align-items: center; gap: 0.6rem; }
.article-body h2::before { content: ''; width: 5px; height: 22px; background: var(--color-gold); border-radius: 3px; display: inline-block; }
.article-body p { color: var(--color-text); margin-bottom: 1.1rem; }
.article-body ul.bullet-points { margin: 0 0 1.1rem; padding-inline-start: 1.4rem; display: flex; flex-direction: column; gap: 0.6rem; }
.article-body ul.bullet-points li { position: relative; }

.article-excerpt-lead {
  font-size: 1.15rem; color: var(--color-text-muted); border-inline-start: 3px solid var(--color-primary);
  padding-inline-start: 1.1rem; margin-bottom: 2.5rem; font-weight: 500;
}

/* ---------- Sidebar: TOC ---------- */
.article-sidebar-block {
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  position: sticky;
  top: calc(var(--header-height) + 1.25rem);
}
.toc-title { font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); margin-bottom: 1rem; }
.toc-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.15rem; border-inline-start: 2px solid var(--color-border); }
.toc-list a {
  display: block; padding: 0.45rem 0 0.45rem 0; padding-inline-start: 1rem; margin-inline-start: -2px;
  border-inline-start: 2px solid transparent; font-size: 0.87rem; color: var(--color-text-muted);
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.toc-list a:hover { color: var(--color-primary); }
.toc-list a.active { color: var(--color-primary); font-weight: 700; border-inline-start-color: var(--color-primary); }

/* ---------- Sidebar: author mini card ---------- */
.author-mini-card { text-align: center; }
.author-mini-card img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; margin-inline: auto 0.9rem; margin-bottom: 0.9rem; }
.author-mini-card strong { display: block; margin-bottom: 0.2rem; }
.author-mini-card span { font-size: 0.8rem; color: var(--color-text-muted); display: block; margin-bottom: 1rem; }

/* ---------- Sidebar: share ---------- */
.share-buttons-vertical { display: flex; gap: 0.6rem; }
.share-buttons-vertical button,
.share-buttons-vertical a {
  flex: 1; height: 42px; border-radius: var(--radius-sm); border: none;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-surface-alt); color: var(--color-text-muted);
  transition: background var(--dur-fast), color var(--dur-fast);
}
.share-buttons-vertical button:hover,
.share-buttons-vertical a:hover { background: var(--color-primary); color: #fff; }

/* ---------- Author bio box (full, after content) ---------- */
.author-bio-box {
  display: flex; gap: 1.5rem;
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin: 2.5rem 0;
  max-width: 720px;
}
.author-bio-box img { width: 76px; height: 76px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.author-bio-box h3 { font-size: 1rem; margin-bottom: 0.2rem; }
.author-bio-box .credentials { font-size: 0.8rem; color: var(--color-primary); font-weight: 600; margin-bottom: 0.6rem; }
.author-bio-box p { color: var(--color-text-muted); font-size: 0.9rem; margin-bottom: 0.9rem; }

/* ---------- Tags row ---------- */
.article-tags-row { display: flex; flex-wrap: wrap; gap: 0.6rem; max-width: 720px; margin-bottom: 2.5rem; }
.article-tags-row a {
  font-size: 0.82rem; font-weight: 600; color: var(--color-text-muted);
  background: var(--color-surface-alt); padding: 0.45rem 1rem; border-radius: var(--radius-pill);
  transition: background var(--dur-fast), color var(--dur-fast);
}
.article-tags-row a:hover { background: var(--color-primary); color: #fff; }

/* ---------- Comments ---------- */
.comments-section { max-width: 720px; }
.comment-list { list-style: none; padding: 0; margin: 0 0 2.5rem; display: flex; flex-direction: column; gap: 1.5rem; }
.comment-item { display: flex; gap: 1rem; }
.comment-item img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.comment-meta { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.3rem; }
.comment-meta strong { font-size: 0.9rem; }
.comment-meta time { font-size: 0.76rem; color: var(--color-text-muted); }
.comment-body p { margin: 0; color: var(--color-text-muted); font-size: 0.92rem; }

.comment-form { background: var(--color-white); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); padding: 1.75rem; }
.comment-form .form-control { border-radius: var(--radius-sm); border: 1.5px solid var(--color-border); padding: 0.75rem 1rem; }
.comment-form .form-control:focus { border-color: var(--color-primary); box-shadow: none; }
.comment-form label { font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; }

/* ---------- Mobile ---------- */
@media (max-width: 767.98px) {
  .author-bio-box { flex-direction: column; text-align: center; }
  .author-bio-box img { margin-inline: auto; }
}