/* Blog Post Specific Styles - Inspired by Thinking Machines */

/* Color system for blog posts */
:root {
  --blog-fg: #2a2a2a;
  --blog-fg2: #4a4a4a;
  --blog-fg3: #6a6a6a;
  --blog-fg4: #8a8a8a;
  --blog-fg5: #aaaaaa;
  --blog-bg: #ffffff;
  --blog-bg-s: #f5f5f5;
  --blog-bg-code: #1e1e1e;
  --blog-red: #d73a49;
}

/* Dark mode colors (if needed later) */
.darkmode {
  --blog-fg: #e8e8e8;
  --blog-fg2: #c8c8c8;
  --blog-fg3: #a8a8a8;
  --blog-fg4: #888888;
  --blog-fg5: #686868;
  --blog-bg: #1a1a1a;
  --blog-bg-s: #2a2a2a;
  --blog-bg-code: #0d1117;
}

/* Main blog post container */
.blog-post-main {
  margin-left: auto;
  margin-right: auto;
  max-width: 950px;
  position: relative;
  padding: 2rem 1rem;
  padding-bottom: calc(3.7em + var(--line-height) + 2em);
  --sidenote-width: 200px;
  --sidenote-gap: 28px;
  --toc-width: 200px;
  --toc-gap: 34px;
}

/* Bottom blur gradient - matches other pages */
.blog-post-main::before {
  content: '';
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3.7em;
  background: linear-gradient(to top, rgba(0, 0, 0, 1), rgba(0, 0, 0, 0));
  pointer-events: none;
  z-index: 1;
}

@media (min-width: 1200px) {
  .blog-post-main {
    max-width: 970px;
    --sidenote-width: 210px;
  }
}

@media (min-width: 1400px) {
  .blog-post-main {
    max-width: 990px;
    --sidenote-width: 220px;
  }
}

@media (min-width: 1600px) {
  .blog-post-main {
    max-width: 1010px;
    --sidenote-width: 250px;
  }
}

@media (min-width: 1800px) {
  .blog-post-main {
    max-width: 1030px;
    --sidenote-width: 280px;
  }
}

/* Blog post title */
.blog-post-title {
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 600;
  font-size: 30px;
  max-width: 480px;
  margin: 3rem auto 0;
  line-height: 1.4;
  text-align: center;
  color: var(--color-white);
}

/* Blog post heading area */
.blog-post-heading {
  text-align: center;
  margin-bottom: 3rem;
  margin-top: 2rem;
}

.blog-post-metadata {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--color-grey-light);
  font-size: 15px;
  line-height: 17px;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

/* Back button container */
.back-button-container {
  position: fixed;
  left: max(20px, calc(50% - 660px/2 - var(--toc-width) - var(--toc-gap)));
  top: 200px;
  display: none;
}

@media (min-width: 1300px) {
  .back-button-container {
    display: block;
  }
}

/* Article content */
.blog-article-content {
  margin-left: auto;
  margin-right: auto;
  max-width: 660px;
  position: relative;
  overflow: visible;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 18px;
  line-height: 2.1;
  color: var(--color-grey-light);
}

@media (min-width: 64em) {
  .blog-article-content {
    margin-left: 2.8ch;
    margin-right: 2.8ch;
  }
}

/* Typography */
.blog-article-content h1 {
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 600;
  font-size: 30px;
  line-height: 1.4;
  margin: 1.25em 0 0.6em;
  color: var(--color-white);
}

.blog-article-content h1:first-child {
  margin-top: 0;
}

.blog-article-content h2 {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.45rem;
  margin: 2.5em 0 0.8em;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-white);
}

.blog-article-content h3 {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.35rem;
  margin: 1.4em 0 0.5em;
  font-weight: normal;
  font-style: italic;
  line-height: 1.4;
  color: var(--color-white);
}

.blog-article-content h4,
.blog-article-content h5,
.blog-article-content h6 {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 0.97rem;
  margin: 1.4em 0 0.7em;
  font-weight: normal;
  font-style: italic;
  color: var(--color-white);
}

.blog-article-content p {
  margin-bottom: 1.8rem;
  margin-top: 0;
}

/* Links - keep cyan color */
.blog-article-content a {
  color: var(--color-cyan);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--color-cyan) 30%, transparent);
  transition: color 0.3s ease-in-out, text-decoration-color 0.3s ease-in-out;
}

.blog-article-content a:hover {
  color: var(--color-cyan);
  text-decoration-color: var(--color-cyan);
}

/* Lists */
.blog-article-content ul {
  list-style: square;
  margin-left: 1.5rem;
  margin-top: 1rem;
  margin-bottom: 1.2rem;
}

.blog-article-content ul > li {
  margin-bottom: 0.2rem;
}

.blog-article-content ol {
  list-style: decimal;
  margin-left: 2rem;
  margin-top: 1rem;
  margin-bottom: 1.2rem;
}

.blog-article-content ol > li {
  margin-bottom: 0.2rem;
}

/* Blockquotes */
.blog-article-content blockquote {
  background-color: rgba(var(--rgb-grey-light), 0.05);
  border-left: 3px solid var(--color-cyan);
  font-style: normal;
  padding: 0.5rem 1.25rem;
  margin: 1.2rem 0 1.2rem 1rem;
  color: var(--color-grey-light);
}

/* Code - inline */
.blog-article-content code {
  color: #d73a49;
  font-family: 'SF Mono', 'Monaco', 'Menlo', 'Consolas', monospace;
  padding: 0 0.2rem;
  font-size: 0.9em;
  display: inline;
}

/* Code blocks */
.blog-article-content pre {
  background-color: #282c34 !important;
  border-radius: 0.3rem;
  font-family: 'SF Mono', 'Monaco', 'Menlo', 'Consolas', monospace;
  position: relative;
  overflow-x: auto;
  padding: 2rem 1rem 1rem 1rem;
  margin: 1.5rem 0;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  font-variant-ligatures: none;
  font-weight: 400;
}

.blog-article-content pre code {
  background: none;
  padding: 0 0.8rem 0 0.2rem;
  color: #abb2bf;
  font-size: 13px;
  white-space: pre;
  word-break: normal;
  overflow-wrap: normal;
  display: block;
  line-height: 1.5;
  font-weight: 400;
}

/* Language label for code blocks */
.blog-article-content pre code[data-lang]::before {
  content: attr(data-lang);
  position: absolute;
  top: 0.45rem;
  left: 0.75rem;
  z-index: 5;
  font-family: var(--font-family);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: #888;
  text-transform: lowercase;
  pointer-events: none;
}

/* Copy button */
.code-block-wrapper {
  position: relative;
}

.copy-button {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background-color: transparent;
  color: #888;
  border: none;
  border-radius: 0.3rem;
  padding: 0.4rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s ease-in-out, background-color 0.15s ease-in-out, color 0.15s ease-in-out;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 12px;
}

.code-block-wrapper:hover .copy-button {
  opacity: 1;
}

.copy-button:hover {
  opacity: 1 !important;
  background-color: rgba(255, 255, 255, 0.1);
  color: #ccc;
}

.copy-button.copied {
  color: var(--color-cyan);
}

/* Tables */
.blog-article-content table {
  display: block;
  overflow-x: auto;
  margin: 1.5rem auto;
  background-color: transparent;
  border-collapse: collapse;
  border: none;
}

.blog-article-content table td,
.blog-article-content table th {
  border: 1px solid var(--color-grey-light);
  padding: 0.75rem;
}

.blog-article-content table th {
  background-color: rgba(var(--rgb-grey-light), 0.1);
  font-weight: bold;
  color: var(--color-white);
}

/* Images */
.blog-article-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 2rem auto;
  border-radius: 0.3rem;
}

/* Left-side Table of Contents */
.left-toc {
  position: fixed;
  top: 250px;
  left: max(20px, calc(50% - 660px/2 - var(--toc-width) - var(--toc-gap)));
  width: var(--toc-width);
  margin: 0;
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--color-grey-light);
  display: none;
  max-height: calc(100vh - 300px);
  overflow-y: auto;
}

@media (min-width: 1300px) {
  .left-toc {
    display: block;
  }
}

.left-toc .toc-title {
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  color: var(--color-white);
}

.left-toc .toc-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.left-toc .toc-item {
  margin: 0 0 0.5rem 0;
}

.left-toc .toc-item a {
  color: var(--color-grey-light);
  text-decoration: none;
  transition: color 0.2s ease-in-out;
  font-size: 0.9rem;
  line-height: 1.5;
}

.left-toc .toc-item a:hover {
  color: var(--color-cyan);
  text-decoration: underline;
}

.left-toc .toc-level-3 {
  padding-left: 0.75rem;
  font-size: 0.85rem;
}

/* Math equations - KaTeX */
.blog-article-content .katex {
  font-size: 1.05em !important;
  overflow: visible;
}

.blog-article-content .katex-display {
  margin: 1.5rem 0;
  overflow-x: auto;
  overflow-y: visible;
}

.blog-article-content .katex-display > .katex {
  overflow-x: auto;
  overflow-y: visible;
}

/* Article navigation (prev/next) */
.article-navigation {
  margin-top: 4rem;
  margin-bottom: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(var(--rgb-grey-light), 0.2);
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  max-width: 660px;
  margin-left: auto;
  margin-right: auto;
}

.article-navigation a {
  flex: 1;
  padding: 1rem;
  border: 1px solid rgba(var(--rgb-grey-light), 0.2);
  border-radius: 0.3rem;
  text-decoration: none;
  color: var(--color-grey-light);
  transition: all 0.2s ease-in-out;
}

.article-navigation a:hover {
  border-color: var(--color-cyan);
  background: rgba(var(--rgb-grey-light), 0.05);
}

.article-navigation .nav-label {
  font-size: 0.85em;
  margin-bottom: 0.5em;
  color: var(--color-grey-light);
}

.article-navigation .nav-title {
  font-weight: 700;
  color: var(--color-cyan);
}

.article-navigation .nav-next {
  text-align: right;
}

/* Responsive adjustments */
@media (max-width: 1400px) {
  .blog-article-content {
    max-width: 90%;
  }
}

@media (max-width: 768px) {
  .blog-article-content {
    font-size: 16px;
    max-width: 100%;
  }

  .blog-post-title {
    font-size: 24px;
  }

  .blog-article-content h2 {
    font-size: 1.3rem;
  }

  .blog-article-content h3 {
    font-size: 1.2rem;
  }

  .article-navigation {
    flex-direction: column;
    gap: 1rem;
  }

  .article-navigation .nav-next {
    text-align: left;
  }
}