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var(--accent-color)}.color-picker{cursor:pointer;border:none;border-radius:50%;width:24px;height:24px;padding:0;overflow:hidden}.color-picker::-webkit-color-swatch-wrapper{padding:0}.color-picker::-webkit-color-swatch{border:2px solid var(--border-color);border-radius:50%}.resizable-divider{background-color:var(--border-color);cursor:row-resize;height:6px;transition:background-color .2s;position:relative}.resizable-divider:hover,.resizable-divider:active{background-color:var(--accent-color)}.resizable-divider:before{content:"";opacity:.3;background-color:currentColor;border-radius:2px;width:40px;height:4px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.theme-toggle{width:32px;height:32px;color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;transition:background-color .2s,color .2s;display:flex}.theme-toggle:hover{background-color:var(--bg-tertiary);color:var(--text-primary)}.app{height:100vh;display:flex;overflow:hidden}.app-main-container{flex-direction:column;flex:1;display:flex;overflow:hidden}.app-header{height:var(--header-height);background-color:var(--bg-secondary);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:0 1rem;display:flex}.app-header h1{color:var(--text-primary);font-size:1.125rem;font-weight:600}.header-actions{align-items:center;gap:8px;display:flex}.header-btn{border:1px solid var(--border-color);background-color:var(--bg-primary);color:var(--text-primary);cursor:pointer;border-radius:6px;align-items:center;gap:6px;padding:6px 12px;font-size:13px;font-weight:500;transition:background-color .15s,border-color .15s;display:flex}.header-btn:hover:not(:disabled){background-color:var(--bg-tertiary);border-color:var(--accent-color)}.header-btn:disabled{opacity:.5;cursor:not-allowed}.header-btn svg{flex-shrink:0}.app-main{flex-direction:column;flex:1;display:flex;overflow:hidden}.mindmap-container{flex:1;min-height:30%;overflow:hidden}.editor-container{min-height:150px;overflow:hidden}*{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary:#fff;--bg-secondary:#f5f5f5;--bg-tertiary:#e8e8e8;--text-primary:#1a1a1a;--text-secondary:#666;--border-color:#d1d1d1;--accent-color:#3b82f6;--accent-hover:#2563eb;--node-bg:#fff;--node-border:#3b82f6;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px #0000001a;--shadow-lg:0 10px 15px #00000026;--header-height:48px}:root,[data-theme=dark]{transition:background-color .3s,color .3s}[data-theme=dark]{--bg-primary:#1a1a1a;--bg-secondary:#2a2a2a;--bg-tertiary:#3a3a3a;--text-primary:#f0f0f0;--text-secondary:#a0a0a0;--border-color:#444;--accent-color:#60a5fa;--accent-hover:#3b82f6;--node-bg:#2a2a2a;--node-border:#60a5fa;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 6px #0006;--shadow-lg:0 10px 15px #00000080}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5}#root{flex-direction:column;height:100vh;display:flex}