@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap";*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#f8f9fa;--color-dot:#e0e0e0;--color-node-bg:#fff;--color-node-border:#e5e7eb;--color-selected:#3b82f6;--color-selected-shadow:#3b82f626;--color-connection:#94a3b8;--color-text-primary:#1e293b;--color-text-secondary:#64748b;--color-text-placeholder:#a0aec0;--color-port:#cbd5e1;--color-port-hover:#3b82f6;--color-danger:#ef4444;--color-toolbar-bg:#ffffffd1;--color-marquee-bg:#3b82f614;--color-marquee-border:#3b82f666;--radius-node:10px;--radius-toolbar:14px;--shadow-node:0 1px 3px #00000012, 0 1px 2px #0000000a;--shadow-node-hover:0 4px 12px #00000014, 0 2px 4px #0000000a;--shadow-node-selected:0 4px 16px var(--color-selected-shadow), 0 2px 4px #0000000a;--shadow-toolbar:0 4px 24px #0000000f, 0 1px 4px #0000000a;--shadow-context-menu:0 8px 32px #0000001f, 0 2px 6px #0000000f;--shadow-modal:0 24px 48px #00000029, 0 8px 16px 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.sidebar-item-delete{opacity:1}.sidebar-item-delete:hover{color:var(--color-danger);background:#fef2f2}.sidebar-add-btn{cursor:pointer;font:inherit;color:var(--color-text-secondary);transition:border-color var(--transition-fast), color var(--transition-fast), background var(--transition-fast);background:0 0;border:1.5px dashed #e5e7eb;border-radius:8px;flex-shrink:0;align-items:center;gap:8px;margin:8px;padding:8px 12px;font-size:13px;display:flex}.sidebar-add-btn:hover{border-color:var(--color-selected);color:var(--color-selected);background:#3b82f60a}