[data-theme="dark"] {
  background: var(--dark-bg);
  color: var(--dark-text);
}

[data-theme="dark"] h2 {
  font-family: 'Courier New', monospace;
  font-size: 1.5rem;
  color: var(--dark-accent);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

[data-theme="dark"] h3 {
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  color: var(--dark-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 2rem 0 0.5rem;
}

/* Preformatted architecture diagram */
[data-theme="dark"] pre.arch {
  background: var(--dark-code-bg);
  color: var(--dark-accent);
  padding: 1.5rem;
  border-radius: 8px;
  font-size: 0.8rem;
  overflow-x: auto;
  line-height: 1.5;
  border: 1px solid rgba(74, 222, 128, 0.15);
}

/* Code blocks (highlight.js) */
[data-theme="dark"] pre code.hljs {
  border-radius: 8px;
  font-size: 0.8rem;
}

/* Tool collapse */
[data-theme="dark"] details {
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
[data-theme="dark"] details summary {
  color: var(--dark-accent);
  font-family: monospace;
}

/* Roadmap */
.roadmap-group { margin-bottom: 2.5rem; }
.roadmap-group h3 { color: var(--dark-accent); margin-bottom: 0.75rem; }
.roadmap-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.35rem 0;
  font-size: 0.9rem;
  color: var(--dark-muted);
}
.roadmap-item.done { color: var(--dark-text); }
.roadmap-item .check { font-size: 1rem; flex-shrink: 0; }