diff --git a/packages/editor-app/src/components/Viewport.tsx b/packages/editor-app/src/components/Viewport.tsx
index 20657849..023c0300 100644
--- a/packages/editor-app/src/components/Viewport.tsx
+++ b/packages/editor-app/src/components/Viewport.tsx
@@ -1,5 +1,5 @@
 import { useEffect, useRef, useState } from 'react';
-import { Play, Pause, RotateCcw, Maximize2, Grid3x3, Eye, EyeOff, Activity } from 'lucide-react';
+import { Play, Pause, RotateCcw, Maximize2, Grid3x3, Eye, EyeOff, Activity, Box, Square } from 'lucide-react';
 import '../styles/Viewport.css';
 
 interface ViewportProps {
@@ -13,8 +13,23 @@ export function Viewport({ locale = 'en' }: ViewportProps) {
   const [showGrid, setShowGrid] = useState(true);
   const [showGizmos, setShowGizmos] = useState(true);
   const [showStats, setShowStats] = useState(false);
+  const [is3D, setIs3D] = useState(true);
   const animationFrameRef = useRef<number>();
   const glRef = useRef<WebGLRenderingContext | null>(null);
+  const gridProgramRef = useRef<WebGLProgram | null>(null);
+  const gridBufferRef = useRef<WebGLBuffer | null>(null);
+  const dynamicGridBufferRef = useRef<WebGLBuffer | null>(null);
+  const axisBufferRef = useRef<WebGLBuffer | null>(null);
+  const [cameraRotation, setCameraRotation] = useState({ yaw: -Math.PI / 4, pitch: Math.PI / 6 });
+  const [cameraDistance, setCameraDistance] = useState(20);
+  const [camera2DOffset, setCamera2DOffset] = useState({ x: 0, y: 0 });
+  const [camera2DZoom, setCamera2DZoom] = useState(20);
+  const isDraggingRef = useRef(false);
+  const lastMousePosRef = useRef({ x: 0, y: 0 });
+  const [fps, setFps] = useState(0);
+  const [drawCalls, setDrawCalls] = useState(0);
+  const fpsFrameCountRef = useRef(0);
+  const fpsLastTimeRef = useRef(performance.now());
 
   useEffect(() => {
     const canvas = canvasRef.current;
@@ -45,60 +60,101 @@ export function Viewport({ locale = 'en' }: ViewportProps) {
     resizeCanvas();
     window.addEventListener('resize', resizeCanvas);
 
+    const resizeObserver = new ResizeObserver(() => {
+      resizeCanvas();
+    });
+
+    if (containerRef.current) {
+      resizeObserver.observe(containerRef.current);
+    }
+
     initWebGL(gl);
 
+    const handleMouseDown = (e: MouseEvent) => {
+      if (e.button === 0) {
+        isDraggingRef.current = true;
+        lastMousePosRef.current = { x: e.clientX, y: e.clientY };
+        canvas.style.cursor = 'grabbing';
+      }
+    };
+
+    const handleMouseMove = (e: MouseEvent) => {
+      if (!isDraggingRef.current) return;
+
+      const deltaX = e.clientX - lastMousePosRef.current.x;
+      const deltaY = e.clientY - lastMousePosRef.current.y;
+
+      if (is3D) {
+        setCameraRotation(prev => ({
+          yaw: prev.yaw - deltaX * 0.005,
+          pitch: Math.max(-Math.PI / 2 + 0.1, Math.min(Math.PI / 2 - 0.1, prev.pitch + deltaY * 0.005))
+        }));
+      } else {
+        setCamera2DOffset(prev => ({
+          x: prev.x - deltaX * 0.05,
+          y: prev.y - deltaY * 0.05
+        }));
+      }
+
+      lastMousePosRef.current = { x: e.clientX, y: e.clientY };
+    };
+
+    const handleMouseUp = () => {
+      isDraggingRef.current = false;
+      if (canvas) {
+        canvas.style.cursor = 'grab';
+      }
+    };
+
+    const handleWheel = (e: WheelEvent) => {
+      e.preventDefault();
+      if (is3D) {
+        setCameraDistance(prev => Math.max(5, Math.min(50, prev + e.deltaY * 0.01)));
+      } else {
+        setCamera2DZoom(prev => Math.max(5, Math.min(100, prev + e.deltaY * 0.01)));
+      }
+    };
+
+    canvas.addEventListener('mousedown', handleMouseDown);
+    canvas.addEventListener('mousemove', handleMouseMove);
+    canvas.addEventListener('mouseup', handleMouseUp);
+    canvas.addEventListener('mouseleave', handleMouseUp);
+    canvas.addEventListener('wheel', handleWheel, { passive: false });
+
     return () => {
       window.removeEventListener('resize', resizeCanvas);
+      resizeObserver.disconnect();
+      canvas.removeEventListener('mousedown', handleMouseDown);
+      canvas.removeEventListener('mousemove', handleMouseMove);
+      canvas.removeEventListener('mouseup', handleMouseUp);
+      canvas.removeEventListener('mouseleave', handleMouseUp);
+      canvas.removeEventListener('wheel', handleWheel);
       if (animationFrameRef.current) {
         cancelAnimationFrame(animationFrameRef.current);
       }
     };
-  }, []);
+  }, [is3D]);
 
   useEffect(() => {
-    if (isPlaying) {
-      startRenderLoop();
-    } else {
+    startRenderLoop();
+    return () => {
       if (animationFrameRef.current) {
         cancelAnimationFrame(animationFrameRef.current);
       }
-    }
-  }, [isPlaying]);
+    };
+  }, [isPlaying, showGrid, cameraRotation, cameraDistance, camera2DOffset, camera2DZoom, is3D]);
 
   const initWebGL = (gl: WebGLRenderingContext) => {
     gl.clearColor(0.1, 0.1, 0.12, 1.0);
-    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
     gl.enable(gl.DEPTH_TEST);
+    gl.enable(gl.BLEND);
+    gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
 
+    initGridProgram(gl);
     renderFrame(gl, 0);
   };
 
-  const startRenderLoop = () => {
-    let startTime = performance.now();
-
-    const render = (currentTime: number) => {
-      const elapsed = (currentTime - startTime) / 1000;
-
-      if (glRef.current) {
-        renderFrame(glRef.current, elapsed);
-      }
-
-      animationFrameRef.current = requestAnimationFrame(render);
-    };
-
-    animationFrameRef.current = requestAnimationFrame(render);
-  };
-
-  const renderFrame = (gl: WebGLRenderingContext, time: number) => {
-    gl.clearColor(0.1, 0.1, 0.12, 1.0);
-    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
-
-    if (showGrid) {
-      drawGrid(gl);
-    }
-  };
-
-  const drawGrid = (gl: WebGLRenderingContext) => {
+  const initGridProgram = (gl: WebGLRenderingContext) => {
     const vertexShaderSource = `
       attribute vec3 position;
       uniform mat4 projection;
@@ -120,17 +176,33 @@ export function Viewport({ locale = 'en' }: ViewportProps) {
     gl.shaderSource(vertexShader, vertexShaderSource);
     gl.compileShader(vertexShader);
 
+    if (!gl.getShaderParameter(vertexShader, gl.COMPILE_STATUS)) {
+      console.error('Vertex shader compilation error:', gl.getShaderInfoLog(vertexShader));
+      return;
+    }
+
     const fragmentShader = gl.createShader(gl.FRAGMENT_SHADER)!;
     gl.shaderSource(fragmentShader, fragmentShaderSource);
     gl.compileShader(fragmentShader);
 
+    if (!gl.getShaderParameter(fragmentShader, gl.COMPILE_STATUS)) {
+      console.error('Fragment shader compilation error:', gl.getShaderInfoLog(fragmentShader));
+      return;
+    }
+
     const program = gl.createProgram()!;
     gl.attachShader(program, vertexShader);
     gl.attachShader(program, fragmentShader);
     gl.linkProgram(program);
-    gl.useProgram(program);
 
-    const gridSize = 10;
+    if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+      console.error('Program linking error:', gl.getProgramInfoLog(program));
+      return;
+    }
+
+    gridProgramRef.current = program;
+
+    const gridSize = 100;
     const gridStep = 1;
     const vertices: number[] = [];
 
@@ -143,14 +215,356 @@ export function Viewport({ locale = 'en' }: ViewportProps) {
     gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
     gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.STATIC_DRAW);
 
+    gridBufferRef.current = buffer;
+
+    const axisLength = 5;
+    const axisVertices = [
+      0, 0, 0, axisLength, 0, 0,
+      0, 0, 0, 0, axisLength, 0,
+      0, 0, 0, 0, 0, axisLength
+    ];
+
+    const axisBuffer = gl.createBuffer();
+    gl.bindBuffer(gl.ARRAY_BUFFER, axisBuffer);
+    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(axisVertices), gl.STATIC_DRAW);
+
+    axisBufferRef.current = axisBuffer;
+  };
+
+  const startRenderLoop = () => {
+    let startTime = performance.now();
+
+    const render = (currentTime: number) => {
+      const elapsed = (currentTime - startTime) / 1000;
+
+      if (glRef.current) {
+        renderFrame(glRef.current, elapsed);
+      }
+
+      animationFrameRef.current = requestAnimationFrame(render);
+    };
+
+    animationFrameRef.current = requestAnimationFrame(render);
+  };
+
+  const renderFrame = (gl: WebGLRenderingContext, time: number) => {
+    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+
+    let currentDrawCalls = 0;
+
+    if (showGrid && gridProgramRef.current && gridBufferRef.current) {
+      drawGrid(gl);
+      currentDrawCalls += is3D ? 1 : 2;
+    }
+
+    gl.disable(gl.DEPTH_TEST);
+    if (gridProgramRef.current && axisBufferRef.current) {
+      drawAxis(gl);
+      currentDrawCalls += is3D ? 3 : 2;
+    }
+    gl.enable(gl.DEPTH_TEST);
+
+    setDrawCalls(currentDrawCalls);
+
+    fpsFrameCountRef.current++;
+    const currentTime = performance.now();
+    const deltaTime = currentTime - fpsLastTimeRef.current;
+
+    if (deltaTime >= 1000) {
+      const currentFps = Math.round((fpsFrameCountRef.current * 1000) / deltaTime);
+      setFps(currentFps);
+      fpsFrameCountRef.current = 0;
+      fpsLastTimeRef.current = currentTime;
+    }
+  };
+
+  const createPerspectiveMatrix = (fov: number, aspect: number, near: number, far: number): Float32Array => {
+    const f = 1.0 / Math.tan(fov / 2);
+    const rangeInv = 1.0 / (near - far);
+
+    return new Float32Array([
+      f / aspect, 0, 0, 0,
+      0, f, 0, 0,
+      0, 0, (near + far) * rangeInv, -1,
+      0, 0, near * far * rangeInv * 2, 0
+    ]);
+  };
+
+  const createOrthographicMatrix = (left: number, right: number, bottom: number, top: number, near: number, far: number): Float32Array => {
+    const lr = 1 / (left - right);
+    const bt = 1 / (bottom - top);
+    const nf = 1 / (near - far);
+
+    return new Float32Array([
+      -2 * lr, 0, 0, 0,
+      0, -2 * bt, 0, 0,
+      0, 0, 2 * nf, 0,
+      (left + right) * lr, (top + bottom) * bt, (near + far) * nf, 1
+    ]);
+  };
+
+  const createLookAtMatrix = (
+    eyeX: number, eyeY: number, eyeZ: number,
+    centerX: number, centerY: number, centerZ: number,
+    upX: number, upY: number, upZ: number
+  ): Float32Array => {
+    let zx = eyeX - centerX;
+    let zy = eyeY - centerY;
+    let zz = eyeZ - centerZ;
+    const zlen = Math.sqrt(zx * zx + zy * zy + zz * zz);
+    zx /= zlen;
+    zy /= zlen;
+    zz /= zlen;
+
+    let xx = upY * zz - upZ * zy;
+    let xy = upZ * zx - upX * zz;
+    let xz = upX * zy - upY * zx;
+    const xlen = Math.sqrt(xx * xx + xy * xy + xz * xz);
+    xx /= xlen;
+    xy /= xlen;
+    xz /= xlen;
+
+    const yx = zy * xz - zz * xy;
+    const yy = zz * xx - zx * xz;
+    const yz = zx * xy - zy * xx;
+
+    return new Float32Array([
+      xx, yx, zx, 0,
+      xy, yy, zy, 0,
+      xz, yz, zz, 0,
+      -(xx * eyeX + xy * eyeY + xz * eyeZ),
+      -(yx * eyeX + yy * eyeY + yz * eyeZ),
+      -(zx * eyeX + zy * eyeY + zz * eyeZ),
+      1
+    ]);
+  };
+
+  const updateDynamicGrid = (gl: WebGLRenderingContext, zoom: number, aspect: number) => {
+    const viewWidth = zoom * aspect * 2;
+    const viewHeight = zoom * 2;
+    const maxViewSize = Math.max(viewWidth, viewHeight);
+
+    let baseGridStep = 1;
+    if (maxViewSize > 200) {
+      baseGridStep = 100;
+    } else if (maxViewSize > 100) {
+      baseGridStep = 10;
+    } else if (maxViewSize > 50) {
+      baseGridStep = 10;
+    } else if (maxViewSize > 20) {
+      baseGridStep = 1;
+    } else if (maxViewSize > 10) {
+      baseGridStep = 1;
+    } else if (maxViewSize > 5) {
+      baseGridStep = 0.1;
+    } else {
+      baseGridStep = 0.01;
+    }
+
+    const fineGridStep = baseGridStep;
+    const coarseGridStep = baseGridStep * 10;
+
+    const gridRange = Math.ceil(maxViewSize * 0.75);
+    const vertices: number[] = [];
+    const coarseVertices: number[] = [];
+
+    const startX = Math.floor((-viewWidth / 2 - gridRange) / fineGridStep) * fineGridStep;
+    const endX = Math.ceil((viewWidth / 2 + gridRange) / fineGridStep) * fineGridStep;
+    const startZ = Math.floor((-viewHeight / 2 - gridRange) / fineGridStep) * fineGridStep;
+    const endZ = Math.ceil((viewHeight / 2 + gridRange) / fineGridStep) * fineGridStep;
+
+    for (let x = startX; x <= endX; x += fineGridStep) {
+      const roundedX = Math.round(x / fineGridStep) * fineGridStep;
+      if (Math.abs(roundedX % coarseGridStep) < 0.001) {
+        coarseVertices.push(roundedX, 0, startZ, roundedX, 0, endZ);
+      } else {
+        vertices.push(roundedX, 0, startZ, roundedX, 0, endZ);
+      }
+    }
+
+    for (let z = startZ; z <= endZ; z += fineGridStep) {
+      const roundedZ = Math.round(z / fineGridStep) * fineGridStep;
+      if (Math.abs(roundedZ % coarseGridStep) < 0.001) {
+        coarseVertices.push(startX, 0, roundedZ, endX, 0, roundedZ);
+      } else {
+        vertices.push(startX, 0, roundedZ, endX, 0, roundedZ);
+      }
+    }
+
+    if (!dynamicGridBufferRef.current) {
+      dynamicGridBufferRef.current = gl.createBuffer();
+    }
+
+    gl.bindBuffer(gl.ARRAY_BUFFER, dynamicGridBufferRef.current);
+    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([...vertices, ...coarseVertices]), gl.DYNAMIC_DRAW);
+
+    return {
+      fineLineCount: vertices.length / 6,
+      coarseLineCount: coarseVertices.length / 6,
+      totalLineCount: (vertices.length + coarseVertices.length) / 6
+    };
+  };
+
+  const drawGrid = (gl: WebGLRenderingContext) => {
+    const program = gridProgramRef.current;
+    if (!program) return;
+
+    gl.useProgram(program);
+
+    const canvas = canvasRef.current;
+    if (!canvas) return;
+
+    const aspect = canvas.width / canvas.height;
+    let projectionMatrix: Float32Array;
+    let viewMatrix: Float32Array;
+
+    const projectionLocation = gl.getUniformLocation(program, 'projection');
+    const viewLocation = gl.getUniformLocation(program, 'view');
+    const colorLocation = gl.getUniformLocation(program, 'color');
+    const positionLocation = gl.getAttribLocation(program, 'position');
+
+    if (is3D) {
+      const buffer = gridBufferRef.current;
+      if (!buffer) return;
+
+      projectionMatrix = createPerspectiveMatrix(Math.PI / 4, aspect, 0.1, 100);
+
+      const eyeX = Math.cos(cameraRotation.pitch) * Math.sin(cameraRotation.yaw) * cameraDistance;
+      const eyeY = Math.sin(cameraRotation.pitch) * cameraDistance;
+      const eyeZ = Math.cos(cameraRotation.pitch) * Math.cos(cameraRotation.yaw) * cameraDistance;
+
+      viewMatrix = createLookAtMatrix(
+        eyeX, eyeY, eyeZ,
+        0, 0, 0,
+        0, 1, 0
+      );
+
+      gl.uniformMatrix4fv(projectionLocation, false, projectionMatrix);
+      gl.uniformMatrix4fv(viewLocation, false, viewMatrix);
+
+      gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+      gl.enableVertexAttribArray(positionLocation);
+      gl.vertexAttribPointer(positionLocation, 3, gl.FLOAT, false, 0, 0);
+
+      gl.uniform4f(colorLocation, 0.3, 0.3, 0.35, 1.0);
+
+      const gridSize = 100;
+      const gridStep = 1;
+      const lineCount = ((gridSize * 2) / gridStep + 1) * 2;
+      gl.drawArrays(gl.LINES, 0, lineCount * 2);
+    } else {
+      const zoom = camera2DZoom;
+      const gridInfo = updateDynamicGrid(gl, zoom, aspect);
+      const buffer = dynamicGridBufferRef.current;
+      if (!buffer) return;
+
+      const halfWidth = zoom * aspect;
+      const halfHeight = zoom;
+
+      projectionMatrix = createOrthographicMatrix(
+        -halfWidth, halfWidth,
+        -halfHeight, halfHeight,
+        -100, 100
+      );
+
+      viewMatrix = createLookAtMatrix(
+        camera2DOffset.x, 50, camera2DOffset.y,
+        camera2DOffset.x, 0, camera2DOffset.y,
+        0, 0, -1
+      );
+
+      gl.uniformMatrix4fv(projectionLocation, false, projectionMatrix);
+      gl.uniformMatrix4fv(viewLocation, false, viewMatrix);
+
+      gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+      gl.enableVertexAttribArray(positionLocation);
+      gl.vertexAttribPointer(positionLocation, 3, gl.FLOAT, false, 0, 0);
+
+      gl.uniform4f(colorLocation, 0.25, 0.25, 0.28, 1.0);
+      gl.drawArrays(gl.LINES, 0, gridInfo.fineLineCount * 2);
+
+      gl.uniform4f(colorLocation, 0.35, 0.35, 0.4, 1.0);
+      gl.drawArrays(gl.LINES, gridInfo.fineLineCount * 2, gridInfo.coarseLineCount * 2);
+    }
+  };
+
+  const drawAxis = (gl: WebGLRenderingContext) => {
+    const program = gridProgramRef.current;
+    const buffer = axisBufferRef.current;
+    if (!program || !buffer) return;
+
+    gl.useProgram(program);
+
+    const canvas = canvasRef.current;
+    if (!canvas) return;
+
+    const aspect = canvas.width / canvas.height;
+    let projectionMatrix: Float32Array;
+    let viewMatrix: Float32Array;
+
+    if (is3D) {
+      projectionMatrix = createPerspectiveMatrix(Math.PI / 4, aspect, 0.1, 100);
+
+      const eyeX = Math.cos(cameraRotation.pitch) * Math.sin(cameraRotation.yaw) * cameraDistance;
+      const eyeY = Math.sin(cameraRotation.pitch) * cameraDistance;
+      const eyeZ = Math.cos(cameraRotation.pitch) * Math.cos(cameraRotation.yaw) * cameraDistance;
+
+      viewMatrix = createLookAtMatrix(
+        eyeX, eyeY, eyeZ,
+        0, 0, 0,
+        0, 1, 0
+      );
+    } else {
+      const zoom = camera2DZoom;
+      const halfWidth = zoom * aspect;
+      const halfHeight = zoom;
+
+      projectionMatrix = createOrthographicMatrix(
+        -halfWidth, halfWidth,
+        -halfHeight, halfHeight,
+        -100, 100
+      );
+
+      viewMatrix = createLookAtMatrix(
+        camera2DOffset.x, 50, camera2DOffset.y,
+        camera2DOffset.x, 0, camera2DOffset.y,
+        0, 0, -1
+      );
+    }
+
+    const projectionLocation = gl.getUniformLocation(program, 'projection');
+    const viewLocation = gl.getUniformLocation(program, 'view');
+    const colorLocation = gl.getUniformLocation(program, 'color');
+
+    gl.uniformMatrix4fv(projectionLocation, false, projectionMatrix);
+    gl.uniformMatrix4fv(viewLocation, false, viewMatrix);
+
+    gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
+
     const positionLocation = gl.getAttribLocation(program, 'position');
     gl.enableVertexAttribArray(positionLocation);
     gl.vertexAttribPointer(positionLocation, 3, gl.FLOAT, false, 0, 0);
 
-    const colorLocation = gl.getUniformLocation(program, 'color');
-    gl.uniform4f(colorLocation, 0.3, 0.3, 0.35, 1.0);
+    gl.lineWidth(3);
 
-    gl.drawArrays(gl.LINES, 0, vertices.length / 3);
+    if (is3D) {
+      gl.uniform4f(colorLocation, 1.0, 0.0, 0.0, 1.0);
+      gl.drawArrays(gl.LINES, 0, 2);
+
+      gl.uniform4f(colorLocation, 0.0, 1.0, 0.0, 1.0);
+      gl.drawArrays(gl.LINES, 2, 2);
+
+      gl.uniform4f(colorLocation, 0.0, 0.0, 1.0, 1.0);
+      gl.drawArrays(gl.LINES, 4, 2);
+    } else {
+      gl.uniform4f(colorLocation, 1.0, 0.0, 0.0, 1.0);
+      gl.drawArrays(gl.LINES, 0, 2);
+
+      gl.uniform4f(colorLocation, 0.0, 0.0, 1.0, 1.0);
+      gl.drawArrays(gl.LINES, 4, 2);
+    }
+
+    gl.lineWidth(1);
   };
 
   const handlePlayPause = () => {
@@ -207,6 +621,14 @@ export function Viewport({ locale = 'en' }: ViewportProps) {
           >
             {showGizmos ? <Eye size={16} /> : <EyeOff size={16} />}
           </button>
+          <div className="viewport-divider" />
+          <button
+            className={`viewport-btn ${is3D ? 'active' : ''}`}
+            onClick={() => setIs3D(!is3D)}
+            title={is3D ? (locale === 'zh' ? '切换到2D' : 'Switch to 2D') : (locale === 'zh' ? '切换到3D' : 'Switch to 3D')}
+          >
+            {is3D ? <Box size={16} /> : <Square size={16} />}
+          </button>
         </div>
         <div className="viewport-toolbar-right">
           <button
@@ -230,11 +652,11 @@ export function Viewport({ locale = 'en' }: ViewportProps) {
         <div className="viewport-stats">
           <div className="viewport-stat">
             <span className="viewport-stat-label">FPS:</span>
-            <span className="viewport-stat-value">60</span>
+            <span className="viewport-stat-value">{fps}</span>
           </div>
           <div className="viewport-stat">
             <span className="viewport-stat-label">Draw Calls:</span>
-            <span className="viewport-stat-value">0</span>
+            <span className="viewport-stat-value">{drawCalls}</span>
           </div>
         </div>
       )}
diff --git a/packages/editor-app/src/styles/Viewport.css b/packages/editor-app/src/styles/Viewport.css
index a49ad962..6b0e6b2b 100644
--- a/packages/editor-app/src/styles/Viewport.css
+++ b/packages/editor-app/src/styles/Viewport.css
@@ -75,8 +75,13 @@
   width: 100%;
   height: 100%;
   display: block;
-  cursor: crosshair;
+  cursor: grab;
   background: #1a1a1f;
+  user-select: none;
+}
+
+.viewport-canvas:active {
+  cursor: grabbing;
 }
 
 .viewport-stats {