*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root,.theme-dark,html.theme-dark{--bg-base:#0f1117;--bg-surface:#1a1d27;--bg-elevated:#22263a;--bg-hover:#2a2f47;--border:#2e3354;--border-light:#3d4468;--accent:#4f8ef7;--accent-hover:#6aa0ff;--accent-dim:#1e3a6e;--text-primary:#e8eaf0;--text-secondary:#8892b0;--text-muted:#4a5380;--success:#4caf82;--warning:#f5a623;--danger:#e05c5c;--canvas-bg:#0f1117;--canvas-plate:#1a1d27;--canvas-grid:#2e3354b3}html.theme-light,.theme-light{--bg-base:#f0f2f7;--bg-surface:#fff;--bg-elevated:#e8eaf2;--bg-hover:#dde0ee;--border:#c8cde0;--border-light:#b0b8d0;--accent:#2563eb;--accent-hover:#1d4ed8;--accent-dim:#dbeafe;--text-primary:#1a1f36;--text-secondary:#4a5568;--text-muted:#9aa5b4;--success:#16a34a;--warning:#d97706;--danger:#dc2626;--canvas-bg:#e8eaf2;--canvas-plate:#f8f9fc;--canvas-grid:#b4bedcb3}html,body,#root{background:var(--bg-base);width:100%;height:100%;color:var(--text-primary);font-family:Segoe UI,system-ui,-apple-system,sans-serif;font-size:13px;overflow:hidden}button,input,select,textarea,a,[role=button]{-webkit-app-region:no-drag}button{cursor:pointer;font-family:inherit;font-size:12px}input,select{font-family:inherit;font-size:13px}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-surface)}::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}