diff --git a/templates/editor.html b/templates/editor.html
index b59d04b..993ead5 100644
--- a/templates/editor.html
+++ b/templates/editor.html
@@ -590,6 +590,8 @@ const defaultEquipment = [
 
 let simEditMode = false;
 let dragEquip = null, dragOffset = {x:0, y:0};
+let selectedEquip = null;
+let resizeHandle = null; // 'w','h','r','rot'
 
 function getEquipment() {
   return layout.equipment || JSON.parse(JSON.stringify(defaultEquipment));
@@ -604,148 +606,178 @@ function toggleSimEdit() {
   renderSchematic();
 }
 
+function svgPt(e) {
+  const svg = document.getElementById('sim-svg');
+  const pt = svg.createSVGPoint();
+  pt.x = e.clientX; pt.y = e.clientY;
+  return pt.matrixTransform(svg.getScreenCTM().inverse());
+}
+
+function saveEquip(eq) {
+  if (!layout.equipment) layout.equipment = getEquipment();
+  const e = layout.equipment.find(x => x.id === eq.id);
+  if (e) Object.assign(e, {x:eq.x, y:eq.y, w:eq.w, h:eq.h, r:eq.r, rot:eq.rot, label:eq.label});
+}
+
+function mkSvgEl(tag, attrs) {
+  const el = document.createElementNS('http://www.w3.org/2000/svg', tag);
+  for (const [k,v] of Object.entries(attrs)) el.setAttribute(k, v);
+  return el;
+}
+
+function handle(svg, cx, cy, type, eq, cursor) {
+  const h = mkSvgEl('circle', {cx, cy, r:'6', fill:'var(--blue)', stroke:'#fff', 'stroke-width':'1.5', cursor, 'data-handle':type});
+  h.addEventListener('mousedown', e => { e.stopPropagation(); resizeHandle = type; dragEquip = eq; dragOffset = svgPt(e); });
+  svg.appendChild(h);
+}
+
 function renderSchematic() {
   const equip = getEquipment();
-  const svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
-  svg.setAttribute('class', 'schematic');
-  svg.setAttribute('viewBox', '0 0 800 400');
-  svg.id = 'sim-svg';
+  const container = document.getElementById('sim-container');
+  container.innerHTML = '';
 
-  // Defs for arrows
+  const svg = mkSvgEl('svg', {'class':'schematic', viewBox:'0 0 800 400', id:'sim-svg'});
   svg.innerHTML = `<defs><marker id="arrowhead" markerWidth="8" markerHeight="6" refX="8" refY="3" orient="auto"><polygon points="0 0, 8 3, 0 6" fill="var(--dim)"/></marker></defs>`;
-
-  // IN/OUT labels
-  svg.innerHTML += `<text x="60" y="148" fill="var(--dim)" font-size="10" text-anchor="middle" font-family="sans-serif">IN &#x25B6;</text>`;
-  svg.innerHTML += `<text x="740" y="320" fill="var(--dim)" font-size="10" text-anchor="middle" font-family="sans-serif">&#x25B6; OUT</text>`;
-
-  document.getElementById('sim-container').innerHTML = '';
-  document.getElementById('sim-container').appendChild(svg);
+  svg.appendChild(mkSvgEl('text', {x:'60',y:'148',fill:'var(--dim)','font-size':'10','text-anchor':'middle','font-family':'sans-serif'})).textContent = 'IN \u25B6';
+  svg.appendChild(mkSvgEl('text', {x:'740',y:'320',fill:'var(--dim)','font-size':'10','text-anchor':'middle','font-family':'sans-serif'})).textContent = '\u25B6 OUT';
+  container.appendChild(svg);
 
   equip.forEach(eq => {
-    const g = document.createElementNS('http://www.w3.org/2000/svg', 'g');
-    g.dataset.eqId = eq.id;
+    if (eq.rot === undefined) eq.rot = 0;
+    const g = mkSvgEl('g', {'data-eq-id': eq.id});
+    const isSel = selectedEquip && selectedEquip.id === eq.id;
+
+    // Apply rotation around center
+    let cx, cy;
+    if (eq.shape === 'rect') {
+      cx = eq.x + (eq.w||80)/2; cy = eq.y + (eq.h||60)/2;
+    } else {
+      cx = eq.x; cy = eq.y;
+    }
+    if (eq.rot) g.setAttribute('transform', `rotate(${eq.rot} ${cx} ${cy})`);
     g.style.cursor = simEditMode ? 'grab' : 'default';
 
     if (eq.shape === 'rect') {
-      const r = document.createElementNS('http://www.w3.org/2000/svg', 'rect');
-      r.setAttribute('class', 'equip');
-      r.setAttribute('x', eq.x); r.setAttribute('y', eq.y);
-      r.setAttribute('width', eq.w); r.setAttribute('height', eq.h);
-      r.setAttribute('rx', '6');
-      g.appendChild(r);
+      g.appendChild(mkSvgEl('rect', {'class':'equip', x:eq.x, y:eq.y, width:eq.w||80, height:eq.h||60, rx:'6',
+        ...(simEditMode ? {stroke: isSel?'var(--blue)':'var(--amber)', 'stroke-width': isSel?'3':'2', 'stroke-dasharray': isSel?'':'4 4'} : {})}));
+      const t = mkSvgEl('text', {'class':'equip-label', x:eq.x+(eq.w||80)/2, y:eq.y+(eq.h||60)/2+5});
+      t.textContent = eq.label; g.appendChild(t);
 
-      const t = document.createElementNS('http://www.w3.org/2000/svg', 'text');
-      t.setAttribute('class', 'equip-label');
-      t.setAttribute('x', eq.x + eq.w/2); t.setAttribute('y', eq.y + eq.h/2 + 5);
-      t.textContent = eq.label;
-      g.appendChild(t);
-
-      // Animation overlay
       if (eq.anim === 'conveyor') {
-        const l = document.createElementNS('http://www.w3.org/2000/svg', 'line');
-        l.setAttribute('class', 'anim-overlay conveyor-anim');
-        l.id = 'sim-' + eq.id;
-        l.setAttribute('x1', eq.x+10); l.setAttribute('y1', eq.y+eq.h-5);
-        l.setAttribute('x2', eq.x+eq.w-10); l.setAttribute('y2', eq.y+eq.h-5);
-        l.setAttribute('stroke', 'var(--green)'); l.setAttribute('stroke-width', '3');
-        l.setAttribute('stroke-dasharray', '10 10');
-        g.appendChild(l);
+        g.appendChild(mkSvgEl('line', {'class':'anim-overlay conveyor-anim', id:'sim-'+eq.id,
+          x1:eq.x+10, y1:eq.y+(eq.h||60)-5, x2:eq.x+(eq.w||80)-10, y2:eq.y+(eq.h||60)-5,
+          stroke:'var(--green)', 'stroke-width':'3', 'stroke-dasharray':'10 10'}));
       }
-    } else { // circle
-      const c = document.createElementNS('http://www.w3.org/2000/svg', 'circle');
-      c.setAttribute('class', 'equip');
-      c.setAttribute('cx', eq.x); c.setAttribute('cy', eq.y); c.setAttribute('r', eq.r || 20);
-      g.appendChild(c);
+    } else {
+      const r = eq.r || 20;
+      g.appendChild(mkSvgEl('circle', {'class':'equip', cx:eq.x, cy:eq.y, r,
+        ...(simEditMode ? {stroke: isSel?'var(--blue)':'var(--amber)', 'stroke-width': isSel?'3':'2', 'stroke-dasharray': isSel?'':'4 4'} : {})}));
+      const t = mkSvgEl('text', {'class':'equip-label', x:eq.x, y:eq.y+4, 'font-size': r<15?'8':'9'});
+      t.textContent = eq.label; g.appendChild(t);
 
-      const t = document.createElementNS('http://www.w3.org/2000/svg', 'text');
-      t.setAttribute('class', 'equip-label');
-      t.setAttribute('x', eq.x); t.setAttribute('y', eq.y + 4);
-      t.setAttribute('font-size', eq.r < 15 ? '8' : '9');
-      t.textContent = eq.label;
-      g.appendChild(t);
-
-      // Animation overlays
       if (eq.anim === 'burner') {
-        const ac = document.createElementNS('http://www.w3.org/2000/svg', 'circle');
-        ac.setAttribute('class', 'anim-overlay burner-glow');
-        ac.id = 'sim-' + eq.id;
-        ac.setAttribute('cx', eq.x); ac.setAttribute('cy', eq.y);
-        ac.setAttribute('r', (eq.r||20)+4);
-        ac.setAttribute('fill', 'none'); ac.setAttribute('stroke', 'var(--amber)'); ac.setAttribute('stroke-width', '4');
-        g.appendChild(ac);
+        g.appendChild(mkSvgEl('circle', {'class':'anim-overlay burner-glow', id:'sim-'+eq.id,
+          cx:eq.x, cy:eq.y, r:r+4, fill:'none', stroke:'var(--amber)', 'stroke-width':'4'}));
       } else if (eq.anim === 'fan' || eq.anim === 'agitator') {
-        const ag = document.createElementNS('http://www.w3.org/2000/svg', 'g');
-        ag.setAttribute('class', `anim-overlay ${eq.anim === 'fan' ? 'fan-anim' : 'agitator-anim'}`);
-        ag.id = 'sim-' + eq.id;
-        ag.setAttribute('transform-origin', `${eq.x} ${eq.y}`);
-        const r = eq.r || 20;
-        const col = eq.anim === 'fan' ? 'var(--blue)' : 'var(--blue)';
-        ag.innerHTML = `<line x1="${eq.x}" y1="${eq.y-r}" x2="${eq.x}" y2="${eq.y+r}" stroke="${col}" stroke-width="2"/>
-          <line x1="${eq.x-r}" y1="${eq.y}" x2="${eq.x+r}" y2="${eq.y}" stroke="${col}" stroke-width="2"/>`;
+        const ag = mkSvgEl('g', {'class':`anim-overlay ${eq.anim==='fan'?'fan-anim':'agitator-anim'}`, id:'sim-'+eq.id, 'transform-origin':`${eq.x} ${eq.y}`});
+        ag.innerHTML = `<line x1="${eq.x}" y1="${eq.y-r}" x2="${eq.x}" y2="${eq.y+r}" stroke="var(--blue)" stroke-width="2"/><line x1="${eq.x-r}" y1="${eq.y}" x2="${eq.x+r}" y2="${eq.y}" stroke="var(--blue)" stroke-width="2"/>`;
         g.appendChild(ag);
       }
     }
-
-    // Edit mode: border highlight
-    if (simEditMode) {
-      const outline = g.querySelector('.equip');
-      if (outline) { outline.setAttribute('stroke', 'var(--amber)'); outline.setAttribute('stroke-width', '2'); outline.setAttribute('stroke-dasharray', '4 4'); }
-    }
-
     svg.appendChild(g);
 
-    // Drag in edit mode
     if (simEditMode) {
-      g.addEventListener('mousedown', (e) => startDragEquip(e, eq));
+      g.addEventListener('mousedown', e => {
+        if (resizeHandle) return;
+        selectedEquip = eq;
+        dragEquip = eq;
+        const p = svgPt(e);
+        dragOffset = {x: p.x - eq.x, y: p.y - eq.y};
+        e.preventDefault();
+        renderSchematic();
+      });
       g.addEventListener('dblclick', () => renameEquip(eq));
     }
   });
 
-  if (simEditMode) {
-    svg.addEventListener('mousemove', moveDragEquip);
-    svg.addEventListener('mouseup', stopDragEquip);
-    svg.addEventListener('mouseleave', stopDragEquip);
+  // Draw selection handles for selected equipment
+  if (simEditMode && selectedEquip) {
+    const eq = selectedEquip;
+    if (eq.shape === 'rect') {
+      const w = eq.w||80, h = eq.h||60;
+      // Width handle (right middle)
+      handle(svg, eq.x+w, eq.y+h/2, 'w', eq, 'ew-resize');
+      // Height handle (bottom middle)
+      handle(svg, eq.x+w/2, eq.y+h, 'h', eq, 'ns-resize');
+      // Corner handle (bottom-right for both)
+      handle(svg, eq.x+w, eq.y+h, 'wh', eq, 'nwse-resize');
+      // Rotation handle (above top center)
+      const rotH = mkSvgEl('circle', {cx:eq.x+w/2, cy:eq.y-25, r:'6', fill:'var(--amber)', stroke:'#fff', 'stroke-width':'1.5', cursor:'crosshair', 'data-handle':'rot'});
+      svg.appendChild(mkSvgEl('line', {x1:eq.x+w/2, y1:eq.y, x2:eq.x+w/2, y2:eq.y-19, stroke:'var(--amber)', 'stroke-width':'1', 'stroke-dasharray':'3 2'}));
+      rotH.addEventListener('mousedown', e => { e.stopPropagation(); resizeHandle = 'rot'; dragEquip = eq; dragOffset = {cx:eq.x+w/2, cy:eq.y+(eq.h||60)/2}; });
+      svg.appendChild(rotH);
+    } else {
+      const r = eq.r || 20;
+      // Radius handle (right edge)
+      handle(svg, eq.x+r, eq.y, 'r', eq, 'ew-resize');
+      // Rotation handle (above)
+      const rotH = mkSvgEl('circle', {cx:eq.x, cy:eq.y-r-20, r:'6', fill:'var(--amber)', stroke:'#fff', 'stroke-width':'1.5', cursor:'crosshair'});
+      svg.appendChild(mkSvgEl('line', {x1:eq.x, y1:eq.y-r, x2:eq.x, y2:eq.y-r-14, stroke:'var(--amber)', 'stroke-width':'1', 'stroke-dasharray':'3 2'}));
+      rotH.addEventListener('mousedown', e => { e.stopPropagation(); resizeHandle = 'rot'; dragEquip = eq; dragOffset = {cx:eq.x, cy:eq.y}; });
+      svg.appendChild(rotH);
+    }
   }
 
+  if (simEditMode) {
+    svg.addEventListener('mousemove', onSvgMouseMove);
+    svg.addEventListener('mouseup', onSvgMouseUp);
+    svg.addEventListener('mouseleave', onSvgMouseUp);
+    // Click on empty space deselects
+    svg.addEventListener('click', e => { if (e.target === svg) { selectedEquip = null; renderSchematic(); } });
+  }
   updateSchematicAnimations();
 }
 
-function startDragEquip(e, eq) {
-  if (!simEditMode) return;
-  dragEquip = eq;
-  const svg = document.getElementById('sim-svg');
-  const pt = svg.createSVGPoint();
-  pt.x = e.clientX; pt.y = e.clientY;
-  const svgPt = pt.matrixTransform(svg.getScreenCTM().inverse());
-  dragOffset.x = svgPt.x - eq.x;
-  dragOffset.y = svgPt.y - eq.y;
-  e.preventDefault();
-}
-
-function moveDragEquip(e) {
+function onSvgMouseMove(e) {
   if (!dragEquip) return;
-  const svg = document.getElementById('sim-svg');
-  const pt = svg.createSVGPoint();
-  pt.x = e.clientX; pt.y = e.clientY;
-  const svgPt = pt.matrixTransform(svg.getScreenCTM().inverse());
-  dragEquip.x = Math.round(svgPt.x - dragOffset.x);
-  dragEquip.y = Math.round(svgPt.y - dragOffset.y);
-  // Save to layout
-  layout.equipment = getEquipment();
-  const eq = layout.equipment.find(e => e.id === dragEquip.id);
-  if (eq) { eq.x = dragEquip.x; eq.y = dragEquip.y; }
-  renderSchematic();
+  const p = svgPt(e);
+
+  if (resizeHandle === 'rot') {
+    // Rotation: angle from center to mouse
+    const cx = dragOffset.cx, cy = dragOffset.cy;
+    const angle = Math.round(Math.atan2(p.x - cx, -(p.y - cy)) * 180 / Math.PI);
+    dragEquip.rot = angle;
+    saveEquip(dragEquip);
+    renderSchematic();
+  } else if (resizeHandle === 'w') {
+    dragEquip.w = Math.max(30, Math.round(p.x - dragEquip.x));
+    saveEquip(dragEquip); renderSchematic();
+  } else if (resizeHandle === 'h') {
+    dragEquip.h = Math.max(20, Math.round(p.y - dragEquip.y));
+    saveEquip(dragEquip); renderSchematic();
+  } else if (resizeHandle === 'wh') {
+    dragEquip.w = Math.max(30, Math.round(p.x - dragEquip.x));
+    dragEquip.h = Math.max(20, Math.round(p.y - dragEquip.y));
+    saveEquip(dragEquip); renderSchematic();
+  } else if (resizeHandle === 'r') {
+    dragEquip.r = Math.max(8, Math.round(Math.sqrt((p.x-dragEquip.x)**2 + (p.y-dragEquip.y)**2)));
+    saveEquip(dragEquip); renderSchematic();
+  } else if (dragEquip && !resizeHandle) {
+    // Move
+    dragEquip.x = Math.round(p.x - dragOffset.x);
+    dragEquip.y = Math.round(p.y - dragOffset.y);
+    saveEquip(dragEquip);
+    renderSchematic();
+  }
 }
 
-function stopDragEquip() { dragEquip = null; }
+function onSvgMouseUp() { dragEquip = null; resizeHandle = null; }
 
 function renameEquip(eq) {
   const name = prompt('Rename equipment:', eq.label);
   if (!name) return;
   eq.label = name;
-  if (!layout.equipment) layout.equipment = getEquipment();
-  const e = layout.equipment.find(x => x.id === eq.id);
-  if (e) e.label = name;
+  saveEquip(eq);
   renderSchematic();
 }