/* ==========================================================================
   lvmaai-article.css — Technical blog article styles
   ========================================================================== */

.lvmaai-article {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
  font-size: 17px;
  line-height: 1.75;
  color: #2c3e50;
}

.lvmaai-article h1,
.lvmaai-article h2,
.lvmaai-article h3,
.lvmaai-article h4 {
  font-weight: 700;
  color: #1a202c;
  line-height: 1.3;
  scroll-margin-top: 80px;
}

.lvmaai-article h1 { font-size: 2.25rem; margin: 1.5rem 0 1rem; letter-spacing: -0.01em; }
.lvmaai-article h2 { font-size: 1.65rem; margin: 2.5rem 0 1rem; padding-bottom: 0.4rem; border-bottom: 1px solid #e2e8f0; }
.lvmaai-article h3 { font-size: 1.3rem; margin: 2rem 0 0.75rem; }
.lvmaai-article h4 { font-size: 1.1rem; margin: 1.5rem 0 0.5rem; }

.lvmaai-article .lv-heading { position: relative; }
.lvmaai-article .lv-heading:hover::before {
  content: '#';
  position: absolute;
  left: -1.25em;
  color: #10b981;
  font-weight: 400;
  opacity: 0.6;
}

.lvmaai-article p { margin: 1em 0; }

.lvmaai-article a {
  color: #10b981;
  text-decoration: none;
  border-bottom: 1px solid rgba(16, 185, 129, 0.3);
  transition: all 0.15s ease;
}

.lvmaai-article a:hover {
  border-bottom-color: #10b981;
  background: rgba(16, 185, 129, 0.05);
}

.lvmaai-article blockquote {
  margin: 1.5em 0;
  padding: 1em 1.25em;
  background: #f7fafc;
  border-left: 4px solid #10b981;
  color: #4a5568;
  font-style: italic;
  border-radius: 0 6px 6px 0;
}

.lvmaai-article blockquote p { margin: 0.5em 0; }

.lvmaai-article ul,
.lvmaai-article ol { margin: 1em 0; padding-left: 1.75em; }
.lvmaai-article li { margin: 0.4em 0; }
.lvmaai-article li::marker { color: #10b981; }

.lvmaai-article :not(pre) > code {
  padding: 0.15em 0.4em;
  margin: 0 0.1em;
  background: #f1f5f9;
  border-radius: 4px;
  font-family: 'SF Mono', Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  font-size: 0.88em;
  color: #e11d48;
}

.lvmaai-article pre {
  margin: 1.5em 0;
  padding: 1.25em 1.5em;
  border-radius: 8px;
  overflow-x: auto;
  font-family: 'SF Mono', Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  tab-size: 2;
}

.lvmaai-article pre code {
  display: block;
  background: none;
  padding: 0;
  color: inherit;
  font-family: inherit;
}

.lv-code-github-dark .lvmaai-article pre { background: #0d1117; color: #e6edf3; border: 1px solid #30363d; }
.lv-code-github-light .lvmaai-article pre { background: #f6f8fa; color: #1f2328; border: 1px solid #d0d7de; }
.lv-code-one-dark .lvmaai-article pre { background: #282c34; color: #abb2bf; border: 1px solid #3e4452; }
.lv-code-nord .lvmaai-article pre { background: #2e3440; color: #d8dee9; border: 1px solid #3b4252; }
.lv-code-monokai .lvmaai-article pre { background: #272822; color: #f8f8f2; border: 1px solid #3e3d32; }
.lv-code-dracula .lvmaai-article pre { background: #282a36; color: #f8f8f2; border: 1px solid #44475a; }

.lvmaai-article img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 1.5em 0;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.lvmaai-article table { width: 100%; margin: 1.5em 0; border-collapse: collapse; font-size: 0.95em; }
.lvmaai-article th,
.lvmaai-article td { padding: 0.6em 0.9em; border: 1px solid #e2e8f0; text-align: left; }
.lvmaai-article th { background: #f7fafc; font-weight: 600; }
.lvmaai-article tr:nth-child(even) td { background: #fafbfc; }

.lvmaai-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 0 0 1.5rem;
  padding: 0 0 1rem;
  border-bottom: 1px solid #e2e8f0;
  color: #718096;
  font-size: 0.9rem;
}

.lvmaai-article-meta > span { display: inline-flex; align-items: center; gap: 0.3em; }

.lv-reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, #10b981, #34d399);
  z-index: 100;
  transition: width 0.1s linear;
}

.lv-toc {
  position: fixed;
  top: 100px;
  right: 2rem;
  width: 240px;
  max-height: calc(100vh - 140px);
  overflow-y: auto;
  padding: 1rem 1.25rem;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  font-size: 0.85rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.lv-toc__title {
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #718096;
  margin-bottom: 0.75rem;
}

.lv-toc__list { list-style: none; padding: 0; margin: 0; }
.lv-toc__list li { margin: 0.25rem 0; }
.lv-toc__list li.lv-toc-h3 { padding-left: 1rem; }
.lv-toc__list li.lv-toc-h4 { padding-left: 1.75rem; }
.lv-toc__list a { color: #4a5568; text-decoration: none; border-bottom: none; display: block; padding: 0.2rem 0; line-height: 1.4; transition: color 0.15s ease; }
.lv-toc__list a:hover { color: #10b981; }
.lv-toc__list a.is-active { color: #10b981; font-weight: 600; }

.lv-post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 3rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid #e2e8f0;
}

.lv-post-nav__item {
  display: block;
  padding: 1rem;
  background: #f7fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.15s ease;
}

.lv-post-nav__item:hover {
  background: #ffffff;
  border-color: #10b981;
  transform: translateY(-1px);
}

.lv-post-nav__label { display: block; font-size: 0.75rem; color: #718096; margin-bottom: 0.3rem; }
.lv-post-nav__title { display: block; font-weight: 600; color: #1a202c; }
.lv-post-nav__item--next { text-align: right; grid-column: 2; }
.lv-post-nav__item--prev { grid-column: 1; }

.lv-related {
  margin: 3rem 0 0;
  padding: 2rem 0 0;
  border-top: 1px solid #e2e8f0;
}

.lv-related__title { font-size: 1.25rem; font-weight: 700; color: #1a202c; margin-bottom: 1rem; }
.lv-related__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }

.lv-related__card {
  padding: 1rem;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: all 0.15s ease;
}

.lv-related__card:hover { border-color: #10b981; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(16, 185, 129, 0.08); }
.lv-related__card-title { font-weight: 600; color: #1a202c; line-height: 1.4; margin-bottom: 0.4rem; }
.lv-related__card-date { font-size: 0.8rem; color: #718096; }

@media (max-width: 1100px) { .lv-toc { display: none; } }

@media (max-width: 640px) {
  .lvmaai-article { font-size: 16px; padding: 1.5rem 1rem 3rem; }
  .lvmaai-article h1 { font-size: 1.75rem; }
  .lvmaai-article h2 { font-size: 1.4rem; }
  .lvmaai-article h3 { font-size: 1.15rem; }
  .lv-post-nav { grid-template-columns: 1fr; }
  .lv-post-nav__item--next { grid-column: 1; text-align: left; }
}

.lv-tag {
  display: inline-block;
  padding: 0.2em 0.6em;
  margin: 0 0.25em 0.4em 0;
  background: #edf2f7;
  border-radius: 4px;
  font-size: 0.85rem;
  color: #4a5568;
  text-decoration: none;
  border: none;
}

.lv-tag:hover { background: #10b981; color: white; }

/* Tag cloud widget */
.lv-tagcloud { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0.5rem 0; }
.lv-tagcloud .lv-tag { font-size: 0.85rem; }

/* Archive list (year/month) */
.lv-archive-year {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1a202c;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid #10b981;
}

.lv-archive-month {
  font-size: 1.1rem;
  font-weight: 600;
  color: #4a5568;
  margin: 1.5rem 0 0.5rem;
}

.lv-archive-list { list-style: none; padding: 0; margin: 0; }
.lv-archive-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.6em 0;
  border-bottom: 1px dashed #e2e8f0;
}
.lv-archive-item a { color: #1a202c; border-bottom: none; flex: 1; }
.lv-archive-item a:hover { color: #10b981; }
.lv-archive-item .lv-archive-date { color: #718096; font-size: 0.85rem; margin-right: 1rem; }