/* ============================================================
   BLOG — Single Post & Prose Styles
   Optimized for fatigue-free long-form reading experience.
   ============================================================ */

/* ============================================================
   SINGLE POST HERO
   ============================================================ */
.nrs-single__hero {
  position: relative;
  padding: 7rem 0 4rem;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}
.nrs-single__hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.nrs-single__hero-thumb-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: blur(3px) brightness(0.3) saturate(0.5);
  transform: scale(1.05);
}
.nrs-single__hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10,10,15,0.6) 0%, rgba(10,10,15,0.95) 100%);
}
.nrs-single__hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 0%, var(--color-accent-glow), transparent 60%),
    radial-gradient(ellipse at 70% 100%, var(--color-accent-2-glow), transparent 60%);
}
.nrs-single__hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.nrs-single__cats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.nrs-single__title {
  font-size: clamp(2rem, 5vw, 3.8rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  margin-bottom: 1.75rem;
}
.nrs-single__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.nrs-single__meta-author {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.nrs-single__meta-avatar {
  width: 36px !important;
  height: 36px !important;
  border-radius: 50% !important;
  object-fit: cover;
  border: 2px solid var(--color-border-strong);
}
.nrs-single__meta-author-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  display: block;
}
.nrs-single__meta-title {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  display: block;
}
.nrs-single__meta-sep {
  width: 1px;
  height: 20px;
  background: var(--color-border-strong);
}
.nrs-single__meta-date,
.nrs-single__meta-reading {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}
.nrs-single__meta-comments {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-base);
}
.nrs-single__meta-comments:hover { color: var(--color-accent-light); }

/* ============================================================
   SINGLE POST LAYOUT (Two-Column)
   ============================================================ */
.nrs-single__layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 4rem;
  align-items: start;
  padding-top: 3.5rem;
  padding-bottom: 5rem;
}

.nrs-single__featured-img {
  margin-bottom: 2.5rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.nrs-single__featured-img img {
  width: 100%;
  height: auto;
  display: block;
}

/* ============================================================
   PROSE TYPOGRAPHY
   Designed for maximum reading comfort at scale
   ============================================================ */
.nrs-prose {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text-secondary);
  max-width: 72ch;
}

.nrs-prose > * + * { margin-top: 1.5em; }

.nrs-prose h2,
.nrs-prose h3,
.nrs-prose h4 {
  color: var(--color-text-primary);
  margin-top: 2.5em;
  margin-bottom: 0.75em;
  scroll-margin-top: 90px;
}
.nrs-prose h2 {
  font-size: 1.75rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
}
.nrs-prose h3 { font-size: 1.35rem; }
.nrs-prose h4 { font-size: 1.1rem; }

.nrs-prose p { margin-bottom: 0; }

.nrs-prose a {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(139,133,255,0.4);
  transition: all var(--transition-base);
}
.nrs-prose a:hover {
  color: var(--color-text-primary);
  text-decoration-color: var(--color-accent-light);
}

.nrs-prose strong { color: var(--color-text-primary); font-weight: 700; }
.nrs-prose em { font-style: italic; color: var(--color-text-primary); }

.nrs-prose ul,
.nrs-prose ol {
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.nrs-prose ul { list-style: none; padding-left: 0; }
.nrs-prose ul li::before {
  content: '→';
  color: var(--color-accent);
  margin-right: 0.65rem;
  font-weight: 600;
}
.nrs-prose ul li,
.nrs-prose ol li { line-height: 1.7; }

.nrs-prose blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 1.25rem 1.5rem;
  background: var(--color-surface-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 2rem 0;
  color: var(--color-text-primary);
  font-size: 1.1rem;
  font-style: italic;
  line-height: 1.65;
}
.nrs-prose blockquote cite {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: normal;
}

.nrs-prose figure {
  margin: 2rem 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.nrs-prose figure img { width: 100%; display: block; }
.nrs-prose figcaption {
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  text-align: center;
}

.nrs-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1.5rem 0;
}
.nrs-prose thead { background: var(--color-surface-2); }
.nrs-prose th {
  padding: 0.75rem 1rem;
  text-align: left;
  color: var(--color-text-primary);
  font-weight: 700;
  border-bottom: 1px solid var(--color-border-strong);
}
.nrs-prose td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}
.nrs-prose tr:hover td { background: var(--color-surface-2); }

.nrs-prose hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 2.5rem 0;
}

/* Code blocks with copy button */
.nrs-prose pre {
  position: relative;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  overflow-x: auto;
  font-size: 0.875em;
  line-height: 1.7;
}
.nrs-prose pre > code {
  background: none;
  border: none;
  padding: 0;
  color: var(--color-text-primary);
  font-size: inherit;
}

/* Copy code button (injected by JS) */
.nrs-copy-btn {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  padding: 0.3rem 0.65rem;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: 5px;
  color: var(--color-text-muted);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all var(--transition-base);
  opacity: 0;
}
.nrs-prose pre:hover .nrs-copy-btn { opacity: 1; }
.nrs-copy-btn:hover { color: var(--color-text-primary); border-color: var(--color-accent); }
.nrs-copy-btn.copied { color: var(--color-accent-2); border-color: var(--color-accent-2); }

/* Callout / info box */
.nrs-prose .callout {
  display: flex;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: 2rem 0;
}
.nrs-prose .callout--info { border-left: 3px solid var(--color-accent); }
.nrs-prose .callout--tip { border-left: 3px solid var(--color-accent-2); }
.nrs-prose .callout--warn { border-left: 3px solid #FB923C; }

/* ============================================================
   TAGS
   ============================================================ */
.nrs-single__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.nrs-single__tags-label {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 600;
  margin-right: 0.25rem;
}
.nrs-single__tag {
  padding: 0.25rem 0.75rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-base);
}
.nrs-single__tag:hover { border-color: var(--color-accent); color: var(--color-accent-light); }

/* ============================================================
   POST NAVIGATION
   ============================================================ */
.nrs-single__post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.nrs-single__post-nav-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-base);
}
.nrs-single__post-nav-item:hover {
  border-color: var(--color-accent);
  background: var(--color-surface-2);
}
.nrs-single__post-nav-item--next { text-align: right; }
.nrs-single__post-nav-label {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-weight: 600;
}
.nrs-single__post-nav-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  line-height: 1.35;
}
.nrs-single__post-nav-item--next .nrs-single__post-nav-label { justify-content: flex-end; }

@media (max-width: 640px) {
  .nrs-single__post-nav { grid-template-columns: 1fr; }
}

/* ============================================================
   AUTHOR BIO
   ============================================================ */
.nrs-author-bio {
  display: flex;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-top: 2.5rem;
}
.nrs-author-bio__avatar-img {
  width: 80px !important;
  height: 80px !important;
  border-radius: 50% !important;
  object-fit: cover;
  border: 2px solid var(--color-border-strong);
  flex-shrink: 0;
}
.nrs-author-bio__content { flex: 1; }
.nrs-author-bio__eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}
.nrs-author-bio__name {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  color: var(--color-text-primary);
}
.nrs-author-bio__name a { color: inherit; text-decoration: none; }
.nrs-author-bio__name a:hover { color: var(--color-accent-light); }
.nrs-author-bio__desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 1rem;
}
.nrs-author-bio__links { display: flex; gap: 1rem; }

@media (max-width: 640px) {
  .nrs-author-bio { flex-direction: column; }
}

/* ============================================================
   SIDEBAR — Table of Contents + Widgets
   ============================================================ */
.nrs-single__sidebar-sticky { position: sticky; top: 88px; display: flex; flex-direction: column; gap: 1.5rem; }

.nrs-toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}
.nrs-toc__title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.nrs-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.nrs-toc__list li {
  border-left: 2px solid var(--color-border);
  transition: border-color var(--transition-base);
}
.nrs-toc__list li.toc-active { border-left-color: var(--color-accent); }
.nrs-toc__list a {
  display: block;
  padding: 0.4rem 0.75rem;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  line-height: 1.35;
  transition: color var(--transition-base);
}
.nrs-toc__list a:hover { color: var(--color-text-primary); }
.nrs-toc__list .toc-active a { color: var(--color-accent-light); }
.nrs-toc__list li.toc-h3 a { padding-left: 1.5rem; font-size: 0.78rem; }
.nrs-toc__loading { font-size: 0.8rem; color: var(--color-text-muted); padding: 0.25rem 0.75rem; }

/* Share buttons */
.nrs-single__share {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}
.nrs-single__share-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}
.nrs-single__share-btns { display: flex; flex-direction: column; gap: 0.5rem; }
.nrs-single__share-btn {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.85rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition-base);
  width: 100%;
}
.nrs-single__share-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

/* Sidebar CTA */
.nrs-single__sidebar-cta {
  background: linear-gradient(135deg, var(--color-surface-2), var(--color-surface-3));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.nrs-single__sidebar-cta-title {
  font-size: 0.95rem;
  color: var(--color-text-primary);
  line-height: 1.35;
}
.nrs-single__sidebar-cta-desc {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* Responsive — collapse sidebar on mobile */
@media (max-width: 1100px) {
  .nrs-single__layout {
    grid-template-columns: 1fr;
  }
  .nrs-single__sidebar { display: none; }
}

/* ============================================================
   RELATED POSTS
   ============================================================ */
.nrs-related {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
.nrs-related__heading {
  font-size: 1.5rem;
  color: var(--color-text-primary);
  margin-bottom: 2rem;
}
.nrs-related__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
@media (max-width: 1024px) { .nrs-related__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px)  { .nrs-related__grid { grid-template-columns: 1fr; } }

/* ============================================================
   COMMENTS
   ============================================================ */
.comments-area {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.comments-title {
  font-size: 1.3rem;
  color: var(--color-text-primary);
  margin-bottom: 1.5rem;
}
.comment-list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.comment {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}
.comment-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.comment-meta .avatar { border-radius: 50%; }
.comment-author b { color: var(--color-text-primary); font-weight: 600; }
.comment-metadata a {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-decoration: none;
}
.comment-content { font-size: 0.9rem; color: var(--color-text-secondary); line-height: 1.7; }
.reply a {
  font-size: 0.8rem;
  color: var(--color-accent-light);
  text-decoration: none;
  margin-top: 0.5rem;
  display: inline-block;
}

/* Comment form */
.comment-respond {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-top: 2rem;
}
.comment-reply-title {
  font-size: 1.15rem;
  color: var(--color-text-primary);
  margin-bottom: 1.5rem;
}
.comment-form label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 0.4rem;
}
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 1rem;
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color var(--transition-base);
  outline: none;
  margin-bottom: 1rem;
}
.comment-form input:focus,
.comment-form textarea:focus { border-color: var(--color-accent); }
.comment-form textarea { min-height: 140px; resize: vertical; }
.comment-form .form-submit { margin-top: 0; }
.comment-form .submit {
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}
.comment-form .submit:hover {
  background: var(--color-accent-light);
  transform: translateY(-1px);
}