.mermaid-diagram {
    min-width: 0;
    margin: 1.5rem 0;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
}
.mermaid-viewport {
    padding: 1rem;
    overflow: auto;
    overscroll-behavior-x: contain;
    border-radius: 8px 8px 0 0;
}
.mermaid-viewport svg {
    display: block;
    max-width: none;
    height: auto;
    margin-inline: auto;
}
.mermaid-viewport:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: -3px;
}
.mermaid-source {
    padding: .65rem 1rem;
    font-size: .85rem;
}
.mermaid-diagram[data-rendered="true"] .mermaid-source {
    border-top: 1px solid var(--border);
}
.mermaid-source > .code-block {
    margin: .75rem 0 0;
}
.mermaid-status {
    padding: 0 1rem;
    color: var(--muted);
    font-size: .85rem;
}