*,*:before,*:after{box-sizing:border-box}body{margin:0;padding:0}.app-container{display:flex;flex-direction:column;height:100vh;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f4f6f9;color:#2c3e50}.app-header{background-color:#2c3e50;color:#fff;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 8px #00000026;z-index:20}.logo{font-size:1.4rem;font-weight:700;display:flex;align-items:center;gap:10px;letter-spacing:.5px}.header-controls{display:flex;align-items:center;gap:10px}.theme-btn{background:none;border:1px solid rgba(255,255,255,.2);border-radius:50%;width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;cursor:pointer;margin-right:10px;transition:all .2s ease;background-color:#ffffff1a}.theme-btn:hover{background-color:#fff3;transform:rotate(15deg)}.run-btn{background-color:#2ecc71;color:#fff;border:none;padding:10px 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ease}.resizer{position:absolute;top:0;bottom:0;width:4px;background-color:#ddd;cursor:col-resize;-webkit-user-select:none;user-select:none;z-index:10;transition:background-color .2s ease}.resizer:hover{background-color:#bbb}.resizer:active{background-color:#999;cursor:col-resize}body.resizing{cursor:col-resize;-webkit-user-select:none;user-select:none}body.resizing-v{cursor:row-resize;-webkit-user-select:none;user-select:none}.pane-header{padding:0 20px;height:45px;background-color:#f8f9fa;border-bottom:1px solid #e1e4e8;font-size:.85rem;font-weight:700;color:#5c6b7f;text-transform:uppercase;letter-spacing:.8px;display:flex;justify-content:space-between;align-items:center;-webkit-user-select:none;user-select:none}.font-size-controls{display:flex;gap:8px}.icon-btn{width:32px;height:32px;border:1px solid transparent;background-color:transparent;border-radius:6px;font-size:1rem;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;color:#6b7280}.icon-btn:hover{background-color:#f3f4f6;color:#111827}.icon-btn:active{background-color:#e5e7eb;transform:scale(.96)}.icon-btn.theme-toggle{font-size:1.2rem}.divider{width:1px;height:18px;background-color:#e1e4e8;margin:0 4px;align-self:center}body.dark-mode .icon-btn{color:#a0a0a0}body.dark-mode .icon-btn:hover{background-color:#333;color:#fff}body.dark-mode .divider{background-color:#444}.clear-btn:hover{background-color:#fee2e2!important;color:#dc2626!important}body.dark-mode .clear-btn:hover{background-color:#4a1818!important;color:#ff6b6b!important}.vertical-resizer{height:6px;background-color:#f0f2f5;cursor:row-resize;z-index:10;transition:background-color .2s ease;border-top:1px solid #e1e4e8;border-bottom:1px solid #e1e4e8;display:flex;justify-content:center;align-items:center}.vertical-resizer:after{content:"";width:30px;height:2px;background-color:#cbd5e1;border-radius:2px}.vertical-resizer:hover{background-color:#e2e8f0}.vertical-resizer:hover:after{background-color:#94a3b8}.vertical-resizer:active{background-color:#cbd5e1}.canvas-container{display:flex;flex-direction:column;border-bottom:1px solid #e0e0e0;position:relative;transition:all .3s ease}.canvas-container.fullscreen{position:fixed;top:0;left:0;width:100vw;height:100vh!important;z-index:1000;background-color:#f8f9fa}.canvas-container.collapsed{height:45px!important;flex:0 0 45px;overflow:hidden}.canvas-container.collapsed .canvas-wrapper{display:none}.canvas-controls{display:flex;gap:8px}.canvas-wrapper{flex:1;position:relative;display:flex;justify-content:center;align-items:center;overflow:auto;background-color:#fff;padding:10px}#turtle-canvas-container{box-shadow:0 0 10px #0000000d}#turtle-canvas-container canvas{border:1px solid #ddd;box-shadow:0 0 5px #0000001a}.monaco-editor{border:1px solid #eee}.monaco-editor .margin{background-color:#eef1f5!important}.monaco-editor .line-numbers{text-align:center!important;width:100%!important;padding-left:0!important;left:0!important}.editor-wrapper>div{width:100%!important;height:100%!important}.console-container{display:flex;flex-direction:column;background-color:#1e1e1e;color:#ccc;min-height:150px}.console-container .pane-header{background-color:#252526;color:#ccc;border-bottom:1px solid #333333}.console-wrapper pre{color:#d4d4d4;font-family:Consolas,Courier New,monospace;font-size:14px;line-height:1.5}.terminal-output{margin:0;white-space:pre-wrap;word-wrap:break-word;color:#d4d4d4;display:inline}.terminal-input-line{display:inline-block;color:#d4d4d4;min-width:100px;vertical-align:middle}.terminal-input-field{background:transparent;border:none;outline:none;color:#4ec9b0;font-family:Consolas,Monaco,monospace;font-size:14px;font-weight:700;width:100%;padding:0;margin:0;caret-color:#d4d4d4}.console-wrapper{flex:1;padding:10px;overflow-y:auto;font-family:Consolas,Monaco,monospace;font-size:.9rem;outline:none}body.dark-mode .app-container{background-color:#121212;color:#e0e0e0}body.dark-mode .app-header{background-color:#1f1f1f;border-bottom:1px solid #333}body.dark-mode .editor-pane{background-color:#1e1e1e;border-right:1px solid #333}body.dark-mode .pane-header{background-color:#252526;color:#ccc;border-bottom:1px solid #333}body.dark-mode .resizer,body.dark-mode .vertical-resizer{background-color:#333}body.dark-mode .preview-pane{background-color:#121212}body.dark-mode .canvas-container{background-color:#1e1e1e;border-bottom:1px solid #333}body.dark-mode .canvas-wrapper{background-color:#1e1e1e}body.dark-mode .monaco-editor .margin{background-color:#1e1e1e!important}body.dark-mode .monaco-editor .line-numbers{color:#858585!important}body.dark-mode #turtle-canvas-container canvas{border-color:#444;box-shadow:0 0 10px #00000080}