#mermaid-zoom-modal {
  position: fixed;
  inset: 0;
  display: none;
  z-index: 9999;
}
#mermaid-zoom-modal.open { display: block; }
#mermaid-zoom-modal .mz-backdrop {
  position: absolute; inset: 0; background: rgba(0,0,0,0.7);
}
#mermaid-zoom-modal .mz-content {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(95vw, 1200px);
  max-height: 90vh; overflow: auto; background: #fff; border-radius: 8px; padding: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}
#mermaid-zoom-modal .mz-content svg { width: 100%; height: auto; }
/* Focus outline for accessibility */
#mermaid-zoom-modal .mz-content:focus { outline: 3px solid #1976d2; outline-offset: 4px; }