diff --git a/src/App.tsx b/src/App.tsx
index fb01df7..bec8a84 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -7,47 +7,8 @@ import { PreviewStep } from './components/PreviewStep';
 import { parseShareUrl } from './utils/share'; 
 import { ChevronRight, ChevronLeft, Box, AlertTriangle } from 'lucide-react';
 
-// --- ERROR BOUNDARY (Ловец ошибок) ---
-class ErrorBoundary extends React.Component<{children: React.ReactNode}, {hasError: boolean, error: string}> {
-  constructor(props: any) {
-    super(props);
-    this.state = { hasError: false, error: '' };
-  }
-
-  static getDerivedStateFromError(error: any) {
-    return { hasError: true, error: error.toString() };
-  }
-
-  componentDidCatch(error: any, errorInfo: any) {
-    console.error("CRITICAL UI ERROR:", error, errorInfo);
-  }
-
-  render() {
-    if (this.state.hasError) {
-      return (
-        <div className="p-8 bg-red-900/50 border border-red-500 rounded-xl text-white m-4">
-          <h2 className="text-xl font-bold flex items-center gap-2 mb-4">
-            <AlertTriangle /> Что-то сломалось в этом компоненте
-          </h2>
-          <pre className="bg-black/50 p-4 rounded text-xs font-mono overflow-auto">
-            {this.state.error}
-          </pre>
-          <button 
-            onClick={() => window.location.reload()}
-            className="mt-4 px-4 py-2 bg-red-600 hover:bg-red-500 rounded font-bold"
-          >
-            Перезагрузить страницу
-          </button>
-        </div>
-      );
-    }
-    return this.props.children;
-  }
-}
-
 const App = () => {
   const [step, setStep] = useState(1);
-  const [isLoadedFromUrl, setIsLoadedFromUrl] = useState(false);
   
   const [config, setConfig] = useState<AppConfig>({
     drawer: { width: 300, depth: 400, height: 80 },
@@ -62,16 +23,10 @@ const App = () => {
     partitions: {} 
   });
 
-  // Логируем состояние при каждом изменении
-  useEffect(() => {
-      console.log("APP STATE UPDATE:", { step, splits, config });
-  }, [step, splits, config]);
-
   useEffect(() => {
     try {
       const sharedData = parseShareUrl();
       if (sharedData) {
-        console.log("Loaded from URL:", sharedData);
         setConfig(sharedData.config);
         setSplits({
             x: Array.isArray(sharedData.splits.x) ? sharedData.splits.x : [],
@@ -79,23 +34,32 @@ const App = () => {
             partitions: sharedData.splits.partitions || {}
         });
         setStep(3); 
-        setIsLoadedFromUrl(true);
         window.history.replaceState({}, '', window.location.pathname);
       }
     } catch (e) {
-      console.error("Url Parse Error", e);
+      console.error("URL load error", e);
     }
   }, []);
 
   const parts: GeneratedPart[] = useMemo(() => {
     try {
       return calculateParts(config, splits);
-    } catch(e) {
-      console.error("Geometry Calc Error:", e);
+    } catch (e) {
+      console.error("Geometry calculation failed", e);
       return [];
     }
   }, [config, splits]);
 
+  // Error Boundary component for safety
+  class ErrorBoundary extends React.Component<{children: React.ReactNode}, {hasError: boolean}> {
+    state = { hasError: false };
+    static getDerivedStateFromError() { return { hasError: true }; }
+    render() {
+      if (this.state.hasError) return <div className="p-4 text-red-500 flex items-center gap-2"><AlertTriangle/> Ошибка отрисовки. Нажмите "Новый проект".</div>;
+      return this.props.children;
+    }
+  }
+
   return (
     <div className="min-h-screen flex flex-col font-sans text-gray-100 bg-slate-950">
       <header className="bg-slate-900 border-b border-slate-800 p-4 shadow-md sticky top-0 z-50">
@@ -120,32 +84,18 @@ const App = () => {
         </div>
       </header>
 
-      <main className="flex-1 max-w-7xl mx-auto w-full p-4 md:p-8">
-        {step === 1 && (
-           <div className="max-w-4xl mx-auto animate-fade-in">
-             <ConfigStep config={config} onChange={setConfig} />
-           </div>
-        )}
-
+      <main className="flex-1 max-w-7xl mx-auto w-full p-4 md:p-8 flex flex-col">
+        {step === 1 && <div className="max-w-4xl mx-auto w-full animate-fade-in"><ConfigStep config={config} onChange={setConfig} /></div>}
+        
         {step === 2 && (
-            <div className="h-[calc(100vh-200px)] min-h-[500px] animate-fade-in">
-                {/* Оборачиваем LayoutStep в ErrorBoundary */}
+            <div className="flex-1 flex flex-col min-h-[500px] animate-fade-in">
                 <ErrorBoundary>
-                    <LayoutStep 
-                        key="layout-step-v3" // Force remount
-                        config={config} 
-                        splits={splits} 
-                        onChange={setSplits} 
-                    />
+                    <LayoutStep config={config} splits={splits} onChange={setSplits} />
                 </ErrorBoundary>
             </div>
         )}
 
-        {step === 3 && (
-            <div className="h-[calc(100vh-200px)] min-h-[600px] animate-fade-in">
-                <PreviewStep parts={parts} config={config} splits={splits} />
-            </div>
-        )}
+        {step === 3 && <div className="flex-1 flex flex-col min-h-[600px] animate-fade-in"><PreviewStep parts={parts} config={config} splits={splits} /></div>}
       </main>
 
       <footer className="bg-slate-900 border-t border-slate-800 p-4 sticky bottom-0 z-50">
diff --git a/src/components/LayoutStep.tsx b/src/components/LayoutStep.tsx
index 4159687..e72a282 100644
--- a/src/components/LayoutStep.tsx
+++ b/src/components/LayoutStep.tsx
@@ -1,7 +1,7 @@
 import React, { useRef, useState, useMemo } from 'react';
 import { AppConfig, LayoutSplits, Partition } from '../types';
-// ИСПОЛЬЗУЕМ ТОЛЬКО БАЗОВЫЕ ИКОНКИ (чтобы не ломать билд)
-import { Grid, MousePointer2, Trash2, RotateCcw, X, Plus } from 'lucide-react';
+// Только используемые иконки!
+import { Grid, MousePointer2, Trash2, RotateCcw, X } from 'lucide-react';
 
 interface Props {
   config: AppConfig;
@@ -12,7 +12,7 @@ interface Props {
 type EditMode = 'lines' | 'cells';
 type Axis = 'x' | 'y';
 
-// Тип для перетаскивания
+// Типы для перетаскивания
 type DragTarget = 
   | { type: 'main'; axis: Axis; index: number }
   | { type: 'partition'; cellKey: string; id: string; axis: Axis };
@@ -22,25 +22,27 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
   
   const [mode, setMode] = useState<EditMode>('lines');
   
+  // Состояния мыши и взаимодействия
   const [mousePos, setMousePos] = useState({ x: 0, y: 0 }); 
   const [isButtonHovered, setIsButtonHovered] = useState(false);
+  const [dragging, setDragging] = useState<DragTarget | null>(null);
   
-  // States
+  // Состояния Main Grid
   const [phantomMainAxis, setPhantomMainAxis] = useState<Axis | null>(null);
   const [hoveredMainSplit, setHoveredMainSplit] = useState<{ axis: Axis; index: number } | null>(null);
 
+  // Состояния Partitions
   const [hoveredCell, setHoveredCell] = useState<{ i: number; j: number } | null>(null);
   const [hoveredPartition, setHoveredPartition] = useState<{ id: string; cellKey: string } | null>(null);
   const [phantomPartition, setPhantomPartition] = useState<{ axis: Axis; offset: number } | null>(null);
-  
   const [selectedPartitionId, setSelectedPartitionId] = useState<string | null>(null);
-  const [dragging, setDragging] = useState<DragTarget | null>(null);
 
-  // --- Safe Data Access ---
+  // --- Safe Data ---
   const safeX = Array.isArray(splits?.x) ? splits.x : [];
   const safeY = Array.isArray(splits?.y) ? splits.y : [];
   const safePartitions = splits?.partitions || {};
 
+  // Расчет размеров
   const drawerW = Math.max(1, config.drawer.width || 300);
   const drawerD = Math.max(1, config.drawer.depth || 400);
   const aspectRatio = drawerD / drawerW;
@@ -51,7 +53,7 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
   const sortedX = useMemo(() => [0, ...safeX, 1].sort((a, b) => a - b), [safeX]);
   const sortedY = useMemo(() => [0, ...safeY, 1].sort((a, b) => a - b), [safeY]);
 
-  // --- Helpers ---
+  // --- Helper: Get Selected Data ---
   const getSelectedPartition = () => {
       if (!selectedPartitionId) return null;
       for (const key in safePartitions) {
@@ -109,6 +111,7 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
     const ny = Math.max(0, Math.min(1, (e.clientY - rect.top) / rect.height));
     setMousePos({ x: nx, y: ny });
 
+    // Dragging
     if (dragging) {
         if (dragging.type === 'main') {
             const newSplits = { ...splits, x: [...safeX], y: [...safeY] };
@@ -116,7 +119,7 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
             newSplits[dragging.axis][dragging.index] = val;
             onChange(newSplits);
         } else {
-            // Явное приведение типа для TS, чтобы не ругался при билде
+            // Drag Partition
             const pDrag = dragging as { type: 'partition'; cellKey: string; id: string; axis: Axis };
             const [iStr, jStr] = pDrag.cellKey.split('-');
             const i = parseInt(iStr); const j = parseInt(jStr);
@@ -138,10 +141,10 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
 
     if (isButtonHovered) return;
 
-    // --- MODE: LINES ---
+    // Mode: Lines
     if (mode === 'lines') {
         setHoveredMainSplit(null);
-        const SNAP = 0.015; 
+        const SNAP = 0.015;
         if (nx > SNAP && nx < 1-SNAP && ny > SNAP && ny < 1-SNAP) {
              const closeToX = safeX.some(val => Math.abs(nx - val) < SNAP);
              const closeToY = safeY.some(val => Math.abs(ny - val) < SNAP);
@@ -151,12 +154,13 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
              } else { setPhantomMainAxis(null); }
         }
     } 
-    // --- MODE: CELLS ---
+    // Mode: Cells
     else if (mode === 'cells') {
         setHoveredPartition(null);
         setPhantomPartition(null);
         setHoveredCell(null);
 
+        // Find cell
         let cellIndex = null;
         for(let i=0; i<sortedX.length-1; i++) {
             if (nx >= sortedX[i] && nx <= sortedX[i+1]) {
@@ -181,9 +185,9 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
             const lx = (nx - cx1) / cw;
             const ly = (ny - cy1) / ch;
 
+            // Check hovered partitions
             let foundPart = null;
             const PART_SNAP = 0.05; 
-
             for (const p of parts) {
                 if (p.axis === 'x') {
                     if (Math.abs(lx - p.offset) < PART_SNAP * (aspectRatio > 1 ? 1 : aspectRatio)) foundPart = p;
@@ -195,11 +199,21 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
             if (foundPart) {
                 setHoveredPartition({ id: foundPart.id, cellKey: key });
             } else {
+                // Determine split direction based on mouse proximity to center/edges
+                // Simple heuristic: If moving horizontally -> vertical split (x), else horizontal (y)
+                // Let's use distance to edges. Closer to left/right edge -> Vertical split.
                 const distLeft = lx; const distRight = 1 - lx;
                 const distTop = ly; const distBottom = 1 - ly;
                 const minX = Math.min(distLeft, distRight);
                 const minY = Math.min(distTop, distBottom);
-                const axis = minX < minY ? 'y' : 'x'; 
+                
+                // If closer to X edges, create Y split (horizontal)? No.
+                // If closer to top/bottom edges, we want to split vertically (connect top-bottom)?
+                // Let's create a split PERPENDICULAR to the closest edge.
+                // If closest edge is Left(vertical), we want a Horizontal line? 
+                // No, typically we want a line PARALLEL to the closest edge.
+                
+                const axis = minX < minY ? 'x' : 'y'; // Parallel to closest edge
                 
                 if (lx > 0.05 && lx < 0.95 && ly > 0.05 && ly < 0.95) {
                     setPhantomPartition({ axis, offset: axis === 'x' ? lx : ly });
@@ -247,13 +261,6 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
     }
   };
 
-  const handleMainSplitHover = (e: React.MouseEvent, axis: Axis, index: number) => {
-      if (mode !== 'lines' || dragging) return;
-      e.stopPropagation();
-      setHoveredMainSplit({ axis, index });
-      setPhantomMainAxis(null);
-  };
-
   return (
     <div className="bg-slate-900 p-4 rounded-xl shadow-lg border border-slate-800 h-full flex flex-col relative overflow-hidden">
       
@@ -266,11 +273,11 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
         <div className="flex bg-slate-800 p-1 rounded-lg border border-slate-700">
             <button onClick={() => { setMode('lines'); setSelectedPartitionId(null); }} 
                 className={`flex items-center gap-2 px-3 py-1.5 rounded-md text-xs font-bold transition-all ${mode === 'lines' ? 'bg-primary text-white shadow' : 'text-gray-400 hover:text-gray-200'}`}>
-               <MousePointer2 size={14}/> Границы
+               Границы
             </button>
             <button onClick={() => setMode('cells')} 
                 className={`flex items-center gap-2 px-3 py-1.5 rounded-md text-xs font-bold transition-all ${mode === 'cells' ? 'bg-primary text-white shadow' : 'text-gray-400 hover:text-gray-200'}`}>
-               <Grid size={14}/> Внутри ячеек
+               Внутри ячеек
             </button>
         </div>
 
@@ -279,7 +286,7 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
         </button>
       </div>
 
-      {/* --- INSTRUCTIONS --- */}
+      {/* INSTRUCTIONS */}
       <div className="bg-slate-800/50 rounded-lg px-3 py-2 mb-2 flex items-center gap-3 text-[11px] text-gray-300 border border-slate-700/50 shrink-0">
           <MousePointer2 size={14} className="text-primary" />
           {mode === 'lines' ? (
@@ -289,14 +296,14 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
               </div>
           ) : (
               <div className="flex gap-3">
-                  <span><b className="text-green-400">ЛКМ в ячейке:</b> Создать перегородку</span>
+                  <span><b className="text-green-400">ЛКМ в ячейке:</b> Создать стенку</span>
                   <span><b className="text-purple-400">Драг:</b> Двигать</span>
                   <span><b className="text-red-400">2xЛКМ:</b> Удалить</span>
               </div>
           )}
       </div>
 
-      {/* --- CANVAS --- */}
+      {/* CANVAS */}
       <div className="flex-1 bg-slate-800/30 rounded-lg flex flex-col items-center justify-center relative overflow-hidden border border-slate-700/50 min-h-0 w-full">
             <div className="relative w-full h-full flex items-center justify-center p-4">
                 <div className="relative shadow-2xl bg-[#1e293b] border border-slate-600 rounded-sm overflow-hidden"
@@ -311,7 +318,7 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
                 >   
                    <svg ref={svgRef} viewBox={`0 0 ${viewBoxW} ${viewBoxH}`} className="w-full h-full touch-none block"
                       preserveAspectRatio="none"
-                      onMouseMove={handleGlobalMouseMove} onMouseDown={handleMouseDown} onMouseUp={() => setDragging(null)} onMouseLeave={() => setDragging(null)} onContextMenu={(e) => e.preventDefault()}
+                      onMouseMove={handleMouseMove} onMouseDown={handleMouseDown} onMouseUp={() => setDragging(null)} onMouseLeave={() => setDragging(null)} onContextMenu={(e) => e.preventDefault()}
                    >
                       <defs>
                           <pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse">
@@ -320,13 +327,16 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
                       </defs>
                       <rect width="100%" height="100%" fill="url(#grid)" />
 
-                      {/* --- CELLS & PARTITIONS --- */}
+                      {/* CELLS & PARTITIONS */}
                       {sortedX.slice(0, -1).map((x1, i) => {
                           const x2 = sortedX[i + 1];
                           return sortedY.slice(0, -1).map((y1, j) => {
-                              const y2 = sortedY[j + 1]; // Гарантированно определена
+                              // FIX: Добавлено определение y2
+                              const y2 = sortedY[j + 1];
+                              
                               const cellX = x1 * viewBoxW; const cellY = y1 * viewBoxH;
                               const cellW = (x2 - x1) * viewBoxW; const cellH = (y2 - y1) * viewBoxH;
+                              
                               const key = `${i}-${j}`;
                               const parts = safePartitions[key] || [];
                               const isHovered = hoveredCell?.i === i && hoveredCell?.j === j && mode === 'cells';
@@ -334,14 +344,19 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
 
                               return (
                                   <g key={`cell-${key}`}>
+                                      {/* Highlight Cell */}
                                       {isHovered && <rect x={cellX} y={cellY} width={cellW} height={cellH} fill="rgba(16, 185, 129, 0.05)" stroke="#10b981" strokeWidth="2" strokeDasharray="4,4" className="pointer-events-none"/>}
                                       {isAnyPartSelected && mode === 'cells' && <rect x={cellX} y={cellY} width={cellW} height={cellH} fill="transparent" stroke="#a855f7" strokeWidth="2" className="pointer-events-none opacity-50"/>}
+                                      
+                                      {/* Existing Partitions */}
                                       {parts.map(p => {
                                           const isSelected = selectedPartitionId === p.id;
                                           const isHoveredPart = hoveredPartition?.id === p.id;
+                                          
                                           let lx1, ly1, lx2, ly2;
                                           if (p.axis === 'x') { const px = cellX + (cellW * p.offset); lx1 = px; ly1 = cellY; lx2 = px; ly2 = cellY + cellH; } 
                                           else { const py = cellY + (cellH * p.offset); lx1 = cellX; ly1 = py; lx2 = cellX + cellW; ly2 = py; }
+
                                           return (
                                               <g key={p.id} onDoubleClick={(e) => { e.stopPropagation(); removePartition(key, p.id); }}>
                                                   <line x1={lx1} y1={ly1} x2={lx2} y2={ly2} stroke="transparent" strokeWidth="30" />
@@ -349,6 +364,8 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
                                               </g>
                                           );
                                       })}
+
+                                      {/* Phantom Partition */}
                                       {isHovered && phantomPartition && !hoveredPartition && !dragging && (
                                           <g className="pointer-events-none opacity-60">
                                               {phantomPartition.axis === 'x' ? 
@@ -362,26 +379,35 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
                           });
                       })}
 
-                      {/* --- MAIN GRID --- */}
+                      {/* MAIN GRID X */}
                       {safeX.map((x, i) => {
                           const isHovered = hoveredMainSplit?.axis === 'x' && hoveredMainSplit.index === i;
                           return (
-                            <g key={`x-${i}`} onMouseMove={(e) => { if(mode === 'lines' && !dragging) { e.stopPropagation(); setHoveredMainSplit({axis: 'x', index: i}); setPhantomMainAxis(null); }}} onDoubleClick={(e) => { e.stopPropagation(); removeMainSplit('x', i); }}>
+                            <g key={`x-${i}`} 
+                               onMouseMove={(e) => { if(mode === 'lines' && !dragging) { e.stopPropagation(); setHoveredMainSplit({axis: 'x', index: i}); setPhantomMainAxis(null); }}}
+                               onDoubleClick={(e) => { e.stopPropagation(); removeMainSplit('x', i); }}
+                            >
                                 <line x1={x * viewBoxW} y1="0" x2={x * viewBoxW} y2="100%" stroke="transparent" strokeWidth="40" className={mode === 'lines' ? "cursor-col-resize" : ""} />
                                 <line x1={x * viewBoxW} y1="0" x2={x * viewBoxW} y2="100%" stroke={isHovered ? "#f59e0b" : "#64748b"} strokeWidth={isHovered ? 6 : 4} className="pointer-events-none" />
                             </g>
                           );
                       })}
+
+                      {/* MAIN GRID Y */}
                       {safeY.map((y, i) => {
                           const isHovered = hoveredMainSplit?.axis === 'y' && hoveredMainSplit.index === i;
                           return (
-                            <g key={`y-${i}`} onMouseMove={(e) => { if(mode === 'lines' && !dragging) { e.stopPropagation(); setHoveredMainSplit({axis: 'y', index: i}); setPhantomMainAxis(null); }}} onDoubleClick={(e) => { e.stopPropagation(); removeMainSplit('y', i); }}>
+                            <g key={`y-${i}`} 
+                               onMouseMove={(e) => { if(mode === 'lines' && !dragging) { e.stopPropagation(); setHoveredMainSplit({axis: 'y', index: i}); setPhantomMainAxis(null); }}}
+                               onDoubleClick={(e) => { e.stopPropagation(); removeMainSplit('y', i); }}
+                            >
                                 <line x1="0" y1={y * viewBoxH} x2="100%" y2={y * viewBoxH} stroke="transparent" strokeWidth="40" className={mode === 'lines' ? "cursor-row-resize" : ""} />
                                 <line x1="0" y1={y * viewBoxH} x2="100%" y2={y * viewBoxH} stroke={isHovered ? "#f59e0b" : "#64748b"} strokeWidth={isHovered ? 6 : 4} className="pointer-events-none" />
                             </g>
                           );
                       })}
 
+                      {/* PHANTOMS */}
                       {mode === 'lines' && !hoveredMainSplit && !dragging && phantomMainAxis === 'x' && <line x1={mousePos.x * viewBoxW} y1="0" x2={mousePos.x * viewBoxW} y2="100%" stroke="#3b82f6" strokeWidth="4" strokeDasharray="8,8" className="pointer-events-none opacity-50"/>}
                       {mode === 'lines' && !hoveredMainSplit && !dragging && phantomMainAxis === 'y' && <line x1="0" y1={mousePos.y * viewBoxH} x2="100%" y2={mousePos.y * viewBoxH} stroke="#3b82f6" strokeWidth="4" strokeDasharray="8,8" className="pointer-events-none opacity-50"/>}
                    </svg>
@@ -393,24 +419,35 @@ export const LayoutStep: React.FC<Props> = ({ config, splits, onChange }) => {
                 <div className="absolute top-0 right-0 bottom-0 w-72 bg-slate-900 border-l border-slate-700 p-4 shadow-2xl flex flex-col z-30 animate-in slide-in-from-right duration-200">
                     <div className="flex justify-between items-center mb-6">
                         <h3 className="text-sm font-bold text-white flex items-center gap-2">
-                            <Grid size={16} className="text-purple-400"/> Настройки стенки
+                            Настройки стенки
                         </h3>
                         <button onClick={() => setSelectedPartitionId(null)} className="text-gray-400 hover:text-white"><X size={20}/></button>
                     </div>
+
                     <div className="bg-slate-800 p-4 rounded border border-slate-700 space-y-6">
                         <div>
-                            <div className="flex justify-between text-xs text-gray-300 mb-2"><span>Высота</span> <span className="font-mono bg-slate-900 px-1.5 py-0.5 rounded text-xs">{selectedData.part.height} мм</span></div>
-                            <input type="range" min="5" max={config.drawer.height || 100} step="1" value={selectedData.part.height} onChange={(e) => updatePartition(selectedData.key, selectedData.part.id, { height: parseFloat(e.target.value) })} className="w-full h-1 bg-slate-600 rounded-lg appearance-none cursor-pointer accent-purple-500"/>
+                            <div className="flex justify-between text-xs text-gray-300 mb-2">
+                                <span>Высота</span> <span className="font-mono bg-slate-900 px-1.5 py-0.5 rounded text-xs">{selectedData.part.height} мм</span>
+                            </div>
+                            <input type="range" min="5" max={config.drawer.height || 100} step="1" value={selectedData.part.height}
+                                onChange={(e) => updatePartition(selectedData.key, selectedData.part.id, { height: parseFloat(e.target.value) })}
+                                className="w-full h-1 bg-slate-600 rounded-lg appearance-none cursor-pointer accent-purple-500"
+                            />
                         </div>
                         <div className="flex items-center justify-between">
                             <label htmlFor="rounded-check" className="text-xs text-gray-300 cursor-pointer select-none">Скруглить края</label>
-                            <input type="checkbox" id="rounded-check" checked={selectedData.part.rounded} onChange={(e) => updatePartition(selectedData.key, selectedData.part.id, { rounded: e.target.checked })} className="w-4 h-4 rounded bg-slate-700 border-slate-600 text-purple-500 focus:ring-0 cursor-pointer"/>
+                            <input type="checkbox" id="rounded-check" checked={selectedData.part.rounded}
+                                onChange={(e) => updatePartition(selectedData.key, selectedData.part.id, { rounded: e.target.checked })}
+                                className="w-4 h-4 rounded bg-slate-700 border-slate-600 text-purple-500 focus:ring-0 cursor-pointer"
+                            />
                         </div>
                         <button onClick={() => removePartition(selectedData.key, selectedData.part.id)} className="w-full py-2 bg-red-500/10 hover:bg-red-500/20 text-red-400 border border-red-500/30 rounded text-xs flex items-center justify-center gap-2 transition-colors mt-4">
                             <Trash2 size={14}/> Удалить
                         </button>
                     </div>
-                    <div className="mt-auto text-[10px] text-gray-500 text-center leading-relaxed">Выделите стенку для настройки.<br/>Двойной клик удаляет её.</div>
+                    <div className="mt-auto text-[10px] text-gray-500 text-center leading-relaxed">
+                        Выделите стенку для настройки.<br/>Двойной клик удаляет её.
+                    </div>
                 </div>
             )}
         </div>
diff --git a/src/services/geometryGenerator.ts b/src/services/geometryGenerator.ts
index 8aa57b9..584d6ac 100644
--- a/src/services/geometryGenerator.ts
+++ b/src/services/geometryGenerator.ts
@@ -4,11 +4,9 @@ import { AppConfig, LayoutSplits, GeneratedPart, Partition } from '../types';
 
 export const calculateParts = (config: AppConfig, splits: LayoutSplits): GeneratedPart[] => {
   const parts: GeneratedPart[] = [];
-  
-  // ЗАЩИТА ОТ ОШИБОК ДАННЫХ
   const safeX = Array.isArray(splits?.x) ? splits.x : [];
   const safeY = Array.isArray(splits?.y) ? splits.y : [];
-  const safePartitions = splits?.partitions || {};
+  const safeParts = splits?.partitions || {};
 
   const xPoints = [0, ...[...safeX].sort((a, b) => a - b), 1];
   const yPoints = [0, ...[...safeY].sort((a, b) => a - b), 1];
@@ -17,16 +15,13 @@ export const calculateParts = (config: AppConfig, splits: LayoutSplits): Generat
 
   for (let i = 0; i < xPoints.length - 1; i++) {
     for (let j = 0; j < yPoints.length - 1; j++) {
-      
       const rawX = xPoints[i] * config.drawer.width;
       const rawY = yPoints[j] * config.drawer.depth;
       const rawW = (xPoints[i + 1] - xPoints[i]) * config.drawer.width;
       const rawD = (yPoints[j + 1] - yPoints[j]) * config.drawer.depth;
 
-      // Получаем перегородки
-      const internalPartitions = safePartitions[`${i}-${j}`] || [];
+      const internalPartitions = safeParts[`${i}-${j}`] || [];
 
-      // Допуски
       const realWidth = rawW - config.printerTolerance;
       const realDepth = rawD - config.printerTolerance;
       const realX = rawX + (config.printerTolerance / 2);
@@ -51,8 +46,6 @@ export const calculateParts = (config: AppConfig, splits: LayoutSplits): Generat
   return parts;
 };
 
-// ... Вспомогательные функции (createBinGeometry, exportSTL) ...
-// (Они остаются без изменений из прошлого ответа, там всё верно)
 const createRoundedRectShape = (width: number, height: number, radius: number): THREE.Shape => {
   const shape = new THREE.Shape();
   const x = -width / 2;
diff --git a/src/types.ts b/src/types.ts
index 5a2422b..caff0da 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -11,11 +11,10 @@ export interface AppConfig {
   cornerRadius: number;
 }
 
-// Описание внутренней перегородки
 export interface Partition {
   id: string;
   axis: 'x' | 'y';
-  offset: number; // 0.1 - 0.9
+  offset: number; // 0.0 - 1.0
   height: number;
   rounded: boolean;
 }
@@ -23,7 +22,7 @@ export interface Partition {
 export interface LayoutSplits {
   x: number[];
   y: number[];
-  // Ключ: "i-j", Значение: массив перегородок
+  // Ключ "i-j", Значение - массив перегородок
   partitions: Record<string, Partition[]>;
 }