* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #fafafa;
  color: #222;
  font-family: 'IBM Plex Mono', 'Fira Code', 'JetBrains Mono', 'Cascadia Code', 'SF Mono', Consolas, monospace;
  font-size: 14px;
  line-height: 1.7;
  padding: 2rem 2rem 6rem 2rem;
  max-width: 72ch;
  margin: 0 auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.nav {
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 3rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #e0e0e0;
}

.nav a {
  color: #888;
  text-decoration: none;
}

.nav a:hover {
  color: #0066cc;
}

/* Post header */
h1 {
  color: #000;
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.post-date {
  color: #999;
  font-size: 0.85rem;
  margin-bottom: 3rem;
}

/* Body text */
p {
  margin-bottom: 1.2rem;
}

strong {
  color: #000;
  font-weight: 600;
}

em {
  color: #555;
  font-style: italic;
}

/* Headers */
h2 {
  color: #000;
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 3rem;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

h3 {
  color: #333;
  font-size: 1rem;
  font-weight: 500;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

/* Code -- inline */
code {
  font-family: inherit;
  color: #c7254e;
  background: #f0f0f0;
  padding: 0.15em 0.35em;
  border-radius: 2px;
  font-size: 0.95em;
}

/* Code -- blocks */
pre {
  background: #1a1a2e;
  border: 1px solid #2a2a3e;
  padding: 1.25rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  line-height: 1.5;
  font-size: 13px;
  border-radius: 3px;
}

pre code {
  background: none;
  padding: 0;
  color: #d4d4d4;
}

/* Syntax highlighting -- minimal */
.kw { color: #f92672; }  /* keywords: actor, do, end, on, become */
.fn { color: #a6e22e; }  /* functions */
.st { color: #e6db74; }  /* strings, atoms */
.cm { color: #666; }     /* comments */
.op { color: #f92672; }  /* operators: |>, <- */
.nr { color: #ae81ff; }  /* numbers */

/* Links */
a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Lists */
ul, ol {
  margin: 1rem 0 1.2rem 1.5rem;
}

li {
  margin-bottom: 0.4rem;
}

/* Blockquotes */
blockquote {
  border-left: 2px solid #ccc;
  padding-left: 1rem;
  color: #666;
  margin: 1.5rem 0;
}

/* Horizontal rules */
hr {
  border: none;
  border-top: 1px solid #e0e0e0;
  margin: 3rem 0;
}

/* REPL/terminal mockups -- stay dark, they're terminals */
.repl {
  background: #1a1a2e;
  border: 1px solid #2a2a3e;
  padding: 1.25rem;
  margin: 1.5rem 0;
  line-height: 1.5;
  font-size: 13px;
  white-space: pre;
  overflow-x: auto;
  border-radius: 3px;
}

.repl .prompt { color: #a6e22e; }
.repl .output { color: #888; }
.repl .agent  { color: #6cb6ff; }

/* --- Split sections -----------------------------------------------

   A split section contains multiple paired rows of prose
   (left) and figures (right), connected by dotted leader
   lines so you always know which code/image goes with
   which paragraph.

   Usage:

   <div class="split">

     <div class="split-pair">
       <div class="split-prose">
         <p>Prose that explains the code on the right...</p>
       </div>
       <div class="split-leader"></div>
       <div class="split-side">
         <pre><code>code here</code></pre>
       </div>
     </div>

   </div>

   Each split-pair is one row: prose | leader | figure.
   The leader is a dotted line connecting them visually.

   ----------------------------------------------------------------- */

.split {
  /* break out of the 72ch body constraint */
  width: 100vw;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  padding: 0 4rem;
  margin: 3rem 0;
}

/* Use a split-pair with no right side for headings,
   so they align with the prose column */
.split > h2 {
  display: none; /* use split-pair for headings instead */
}

.split-pair {
  display: grid;
  grid-template-columns: 1fr 3rem 1fr;
  align-items: center;
  margin-bottom: 2.5rem;
}

.split-prose {
  max-width: 72ch;
  justify-self: end;
  padding-right: 0.5rem;
}

.split-prose h2 {
  margin-top: 0;
}

.split-prose p:last-child {
  margin-bottom: 0;
}

/* The dotted leader line connecting prose to figure */
.split-leader {
  border-top: 1px dotted #bbb;
  height: 0;
  align-self: center;
}

.split-side {
  max-width: 72ch;
  padding-left: 0.5rem;
}

/* Code blocks inside split-side */
.split-side pre {
  margin: 0;
}

/* Images inside split-side */
.split-side img {
  max-width: 100%;
  border: 1px solid #ddd;
  border-radius: 3px;
}

/* Diff styling inside split-side */
.split-side .diff-add {
  color: #22863a;
}

.split-side .diff-remove {
  color: #cb2431;
}

.split-side .diff-context {
  color: #999;
}

/* Blockquotes inside split-side */
.split-side blockquote {
  border-left-color: #ccc;
  color: #666;
  margin: 0;
}

/* On narrow screens, stack vertically */
@media (max-width: 900px) {
  .split {
    padding: 0 2rem;
  }

  .split-pair {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .split-prose {
    justify-self: start;
    padding-right: 0;
  }

  .split-leader {
    display: none;
  }

  .split-side {
    padding-left: 0;
  }
}

/* Selection */
::selection {
  background: #b3d4fc;
  color: #000;
}