/* ========================================
   LetMeNote — Blog Stylesheet
   ======================================== */

/* ── BLOG LAYOUT ── */
.blog-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 7rem 1.5rem 4rem;
  align-items: start;
}

@media (max-width: 900px) {
  .blog-layout {
    grid-template-columns: 1fr;
    padding: 6rem 1.25rem 3rem;
  }
  .blog-sidebar { order: -1; }
}

/* ── ARTICLE ── */
.blog-article {
  min-width: 0;
}

.article-header {
  margin-bottom: 2.5rem;
}

.article-header h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  margin-top: 0.75rem;
}

/* ── POST META ── */
.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.post-meta time { color: var(--muted); }
.post-meta .reading-time::before { content: '·'; margin-right: 0.75rem; }
.post-meta .author::before { content: '·'; margin-right: 0.75rem; }
.post-meta .author { color: var(--accent2); font-weight: 500; }

/* ── CATEGORY & TAG BADGES ── */
.category {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  background: rgba(124,111,247,0.12);
  border: 1px solid rgba(124,111,247,0.25);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s, border-color 0.2s;
}

.tag:hover {
  color: var(--text);
  border-color: rgba(124,111,247,0.3);
}

/* ── POST EXCERPT ── */
.post-excerpt {
  font-size: 1.1rem;
  color: var(--muted);
  line-height: 1.75;
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  margin-top: 1rem;
}

/* ── POST BODY TYPOGRAPHY ── */
.post-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text);
  max-width: var(--reading-width);
}

.post-body h2 {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.post-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.post-body p {
  margin-bottom: 1.25rem;
}

.post-body ul, .post-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.post-body li {
  margin-bottom: 0.4rem;
}

.post-body a {
  color: var(--accent2);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.post-body a:hover { color: var(--accent3); }

.post-body strong { font-weight: 700; color: var(--text); }

.post-body em { font-style: italic; }

/* ── CODE BLOCKS ── */
.post-body pre {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}

.post-body code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 0.875em;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}

.post-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  font-size: inherit;
}

/* ── BLOCKQUOTE ── */
.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  background: rgba(124,111,247,0.06);
  border-radius: 0 8px 8px 0;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--muted);
}

.post-body blockquote p { margin-bottom: 0; }

/* ── TABLE ── */
.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.post-body th {
  text-align: left;
  padding: 0.6rem 0.875rem;
  background: var(--surface2);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

.post-body td {
  padding: 0.65rem 0.875rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

/* ── TABLE OF CONTENTS ── */
.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  position: sticky;
  top: 5.5rem;
  max-height: calc(100vh - 7rem);
  overflow-y: auto;
  margin-bottom: 1.5rem;
}

.toc h3 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.toc nav ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.toc nav a {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  line-height: 1.4;
  display: block;
  padding: 0.15rem 0;
  transition: color 0.2s;
}

.toc nav a:hover { color: var(--accent2); }

/* ── SIDEBAR WIDGETS ── */
.blog-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.sidebar-widget {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}

.sidebar-widget h3 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.sidebar-widget p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
}

/* ── POST FAQ ── */
.post-faq {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
  max-width: var(--reading-width);
}

.post-faq h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
}

/* ── RELATED POSTS ── */
.related-posts {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

.related-posts h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.related-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s;
  display: block;
}

.related-card:hover {
  border-color: rgba(124,111,247,0.3);
  transform: translateY(-2px);
}

.related-card .related-cat {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent2);
  margin-bottom: 0.4rem;
  display: block;
}

.related-card .related-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
}

/* ── BLOG INDEX ── */
.blog-index {
  max-width: 1100px;
  margin: 0 auto;
  padding: 7rem 1.5rem 4rem;
}

.blog-index-header {
  margin-bottom: 2.5rem;
}

.blog-index-header h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
}

.blog-index-header p {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 560px;
}

/* ── CATEGORY FILTER ── */
.category-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.filter-btn {
  padding: 0.4rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.filter-btn:hover,
.filter-btn.active {
  background: rgba(124,111,247,0.15);
  border-color: rgba(124,111,247,0.35);
  color: var(--accent2);
}

/* ── BLOG GRID ── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.blog-card:hover {
  border-color: rgba(124,111,247,0.3);
  transform: translateY(-3px);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.blog-card-date {
  font-size: 0.8rem;
  color: var(--muted);
}

.blog-card-read {
  font-size: 0.8rem;
  color: var(--muted);
}

.blog-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
}

.blog-card-excerpt {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}

.blog-card-footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
}

.read-more {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent2);
}

/* ── ASIDE ── */
aside.blog-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ── PRINT ── */
@media print {
  .blog-sidebar, .toc, nav, footer, .related-posts, .post-faq { display: none; }
  .blog-layout { display: block; }
  .post-body { max-width: 100%; }
  body { background: #fff; color: #000; }
}