:root{--buncss-light:initial;--buncss-dark: ;color-scheme:light dark;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,Avenir,Helvetica,Arial,sans-serif;line-height:1.5}@media (prefers-color-scheme:dark){:root{--buncss-light: ;--buncss-dark:initial}}body{display:flex;overflow:hidden;flex-direction:column;width:100vw;height:100vh;margin:0}#root{display:flex;flex:1;width:100%}.app-container{display:flex;flex-direction:column;width:100%;height:100%}.app-header{display:flex;color:#fff;background-color:#242424;border-bottom:1px solid #333;flex-shrink:0;justify-content:space-between;align-items: center;padding:1rem 2rem}.app-header h1{margin:0;font-size:1.5rem}.actions{display:flex;gap:1rem}.actions button{color:#fff;cursor:pointer;background-color:#4caf50;border:none;border-radius:4px;padding:.5rem 1rem;font-size:1rem}.example-select,.theme-select{color:#fff;cursor:pointer;background-color:#333;border:1px solid #555;border-radius:4px;padding:.5rem;font-size:1rem}.example-select:focus,.theme-select:focus{outline:none;border-color:#4caf50}.actions button:hover{background-color:#45a049}.main-content{display:flex;overflow:hidden;flex:1}.pane{box-sizing:border-box;min-width:0;height:100%}.editor-pane{display:flex;background-color:#1e1e1e;flex-direction:column}.preview-pane{overflow:auto;display:flex;background-color:#fff;justify-content:center;align-items: center}.resize-handle{cursor:col-resize;position:relative;z-index:10;background-color:#333;width:8px;transition:background-color .2s}.resize-handle:hover,.resize-handle[data-resize-handle-active]{background-color:#4caf50}.mermaid-container{display:flex;flex-direction:column;width:100%;height:100%}.mermaid-error{color:#fff;background-color:#f44336;border-radius:4px;margin-bottom:1rem;padding:1rem}.mermaid-svg-wrapper{display:flex;flex:1;justify-content:center;align-items: center}.mermaid-svg-wrapper svg{max-width:100%;max-height:100%}.actions button.btn-copied{background-color:#125620;transition:background-color .3s}