/* GitHub-style markdown rendering */
.markdown-body {
  box-sizing: border-box;
  min-width: 0;
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 32px;
  font-size: 16px;
  line-height: 1.6;
  word-wrap: break-word;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  margin-top: 24px;
  margin-bottom: 16px;
  font-weight: 600;
  line-height: 1.25;
}

.markdown-body h1 { font-size: 2em; padding-bottom: 0.3em; border-bottom: 1px solid var(--line); }
.markdown-body h2 { font-size: 1.5em; padding-bottom: 0.3em; border-bottom: 1px solid var(--line); }
.markdown-body h3 { font-size: 1.25em; }
.markdown-body h4 { font-size: 1em; }

.markdown-body p { margin: 0 0 16px; }
.markdown-body ul, .markdown-body ol { margin: 0 0 16px; padding-left: 2em; }
.markdown-body li + li { margin-top: 0.25em; }

.markdown-body blockquote {
  margin: 0 0 16px;
  padding: 0 1em;
  color: var(--muted);
  border-left: 4px solid var(--accent);
}

.markdown-body code {
  padding: 0.2em 0.4em;
  margin: 0;
  font-size: inherit;
  background: rgba(0,0,0,0.35);
  border-radius: 6px;
}

.markdown-body pre {
  padding: 16px;
  overflow: auto;
  font-size: inherit;
  line-height: 1.45;
  background: rgba(0,0,0,0.35);
  border-radius: 6px;
  margin: 0 0 16px;
}

.markdown-body pre code {
  padding: 0;
  background: transparent;
  font-size: 100%;
}

.markdown-body pre.mermaid {
  background: rgba(0,0,0,0.22);
  padding: 12px;
}

.markdown-body table {
  border-spacing: 0;
  border-collapse: collapse;
  margin: 0 0 16px;
  width: 100%;
}

.markdown-body th,
.markdown-body td {
  padding: 6px 13px;
  border: 1px solid var(--line);
}

.markdown-body th {
  font-weight: 600;
  background: rgba(255,255,255,0.05);
}

.markdown-body hr {
  height: 0.25em;
  padding: 0;
  margin: 24px 0;
  background: var(--line);
  border: 0;
}

.readme-container { padding-top: 24px; }

.readme-loading {
  color: var(--muted);
  padding: 48px;
  text-align: center;
}

.readme-error {
  color: #e74c3c;
  padding: 24px;
}