.markdown-viewer {
  color: var(--subtle);
  font-size: 14px;
  line-height: 1.6;
  word-break: break-word;
}

.markdown-viewer--text .markdown-plain,
.markdown-viewer.mermaid-fallback pre {
  margin: 0;
  white-space: pre-wrap;
}

.markdown-viewer--rich > :first-child {
  margin-top: 0;
}

.markdown-viewer--rich > :last-child {
  margin-bottom: 0;
}

.markdown-viewer--rich h1,
.markdown-viewer--rich h2,
.markdown-viewer--rich h3,
.markdown-viewer--rich h4 {
  margin: 1.1em 0 0.45em;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.markdown-viewer--rich h1 { font-size: 1.35rem; }
.markdown-viewer--rich h2 { font-size: 1.2rem; }
.markdown-viewer--rich h3 { font-size: 1.05rem; }
.markdown-viewer--rich h4 { font-size: 0.98rem; }

.markdown-viewer--rich p,
.markdown-viewer--rich ul,
.markdown-viewer--rich ol,
.markdown-viewer--rich blockquote,
.markdown-viewer--rich pre {
  margin: 0.65em 0;
}

.markdown-viewer--rich ul,
.markdown-viewer--rich ol {
  padding-left: 1.35rem;
}

.markdown-viewer--rich li + li {
  margin-top: 0.25em;
}

.markdown-viewer--rich blockquote {
  padding-left: 12px;
  border-left: 3px solid var(--border);
  color: var(--muted);
}

.markdown-viewer--rich code,
.markdown-viewer.mermaid-fallback code {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

.markdown-viewer--rich code {
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.1em 0.35em;
}

.markdown-viewer--rich pre,
.markdown-viewer.mermaid-fallback pre {
  overflow-x: auto;
  padding: 12px 14px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.markdown-viewer--rich pre code {
  border: 0;
  background: transparent;
  padding: 0;
}

.markdown-viewer--rich table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.markdown-viewer--rich th,
.markdown-viewer--rich td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

.markdown-viewer--rich th {
  background: var(--panel-soft);
  color: var(--text);
}

.markdown-viewer--rich a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.markdown-viewer .mermaid {
  margin: 12px 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  overflow-x: auto;
}