:root{--bg-color: #f5f5f5;--sidebar-bg: #ffffff;--canvas-bg: #f5f5f5;--border-color: #e6e6e6;--text-primary: #333333;--text-secondary: #888888;--accent-color: #0d99ff;--hover-bg: #f5f5f5;--input-bg: #f8f8f8;--input-border: transparent;--menu-bg: #ffffff;--menu-border: #e6e6e6;--menu-text: #333333;--menu-hover: #f5f5f5;--sidebar-width-left: 240px;--sidebar-width-right: 260px}body.dark-theme{--bg-color: #1e1e1e;--sidebar-bg: #2c2c2c;--canvas-bg: #f5f5f5;--border-color: #444444;--text-primary: #e0e0e0;--text-secondary: #aaaaaa;--accent-color: #0d99ff;--hover-bg: #3c3c3c;--input-bg: #333333;--input-border: #444444;--menu-bg: #2c2c2c;--menu-border: #444444;--menu-text: #e0e0e0;--menu-hover: #3c3c3c}body{margin:0;padding:0;overflow:hidden;background:var(--bg-color);font-family:Inter,sans-serif;color:var(--text-primary);height:100vh;width:100vw;-webkit-user-select:none;user-select:none}#root{display:flex;width:100%;height:100%}.icon{width:16px;height:16px;display:inline-block;background-color:currentColor;mask-size:contain;-webkit-mask-size:contain;mask-repeat:no-repeat;-webkit-mask-repeat:no-repeat;mask-position:center;-webkit-mask-position:center}.sidebar{display:flex;flex-direction:column;z-index:10;width:100%;height:100%}.sidebar.left{background:var(--sidebar-bg);border-right:1px solid var(--border-color)}.sidebar-header{height:40px;display:flex;align-items:center;padding:0 12px;font-weight:600;border-bottom:1px solid var(--border-color)}.section-title{padding:12px 12px 6px;font-size:11px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.tree-item{padding:6px 12px 6px 24px;font-size:13px;color:var(--text-primary);display:flex;align-items:center;cursor:default}.tree-item:hover{background:var(--hover-bg)}.tree-item.selected{background:#0d99ff33;color:var(--text-primary)}.tree-item .layer-icon{margin-right:8px;opacity:.7}.main-viewport{flex-grow:1;position:relative;background:var(--canvas-bg);overflow:hidden;display:flex;align-items:center;justify-content:center}.toolbar{position:absolute;bottom:30px;left:50%;transform:translate(-50%);background:#2c2c2c;border:1px solid #444;border-radius:12px;padding:6px;display:flex;align-items:center;gap:2px;box-shadow:0 8px 24px #0006;z-index:100}.tool-btn{background:transparent;border:none;color:#ccc;width:40px;height:40px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;position:relative}.tool-btn:hover{background:#ffffff1a;color:#fff}.tool-btn.active{background:#0d99ff;color:#fff}.tool-separator{width:1px;height:24px;background:#555;margin:0 6px}.tool-btn svg{width:20px;height:20px;fill:currentColor}.tool-group{position:relative;display:flex;align-items:center}.tool-dropdown{position:absolute;bottom:50px;left:0;background:#222;border:1px solid #444;border-radius:8px;padding:4px;display:none;flex-direction:column;width:140px;box-shadow:0 4px 12px #00000080;z-index:200}.tool-dropdown.show{display:flex}.dropdown-item{display:flex;align-items:center;padding:8px;border-radius:4px;cursor:pointer;color:#eee;font-size:13px;transition:background .2s}.dropdown-item:hover{background:#333}.dropdown-item.active{background:var(--accent-color);color:#fff}.dropdown-item .item-icon{width:16px;height:16px;margin-right:8px;fill:currentColor}.dropdown-item .item-label{flex-grow:1}.dropdown-item .item-shortcut{font-size:11px;opacity:.6}.caret-icon{width:8px!important;height:8px!important;margin-left:2px;opacity:.7}.sidebar.right{background:var(--sidebar-bg);border-left:1px solid var(--border-color)}.tabs{display:flex;height:40px;border-bottom:1px solid var(--border-color)}.tab{flex:1;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:500;color:var(--text-secondary);cursor:pointer}.tab:hover{color:var(--text-primary)}.tab.active{color:var(--text-primary);border-bottom:2px solid var(--text-primary)}.property-panel{padding:16px;overflow-y:auto}.prop-section{margin-bottom:16px;border-bottom:1px solid var(--border-color);padding-bottom:16px}.prop-section:last-child{border-bottom:none}.prop-header{font-size:12px;font-weight:600;margin-bottom:8px;display:flex;justify-content:space-between}.prop-row{display:flex;gap:8px;margin-bottom:8px}.prop-field{flex:1;display:flex;align-items:center;background:#f8f8f8;border:1px solid transparent;border-radius:4px;padding:4px 8px;font-size:12px;cursor:text}.prop-field:hover,.prop-field:focus-within{border:1px solid #ccc;background:#fff}.prop-label{color:var(--text-secondary);margin-right:8px;width:12px}.prop-value{color:var(--text-primary);flex-grow:1;border:none;background:transparent;width:100%;outline:none;pointer-events:auto}input{user-select:auto;-webkit-user-select:auto}canvas{display:block}.resizer{width:4px;background:transparent;cursor:col-resize;z-index:20;transition:background .2s;flex-shrink:0;margin:0 -2px;position:relative}.resizer:hover,.resizer.dragging{background:var(--accent-color)}#selection-overlay{position:absolute;pointer-events:none;background:#0d99ff;color:#fff;padding:4px 8px;border-radius:4px;font-size:11px;font-weight:500;transform:translate(-50%);white-space:nowrap;z-index:50;display:none;box-shadow:0 2px 4px #0003}.glowing-border{border:2px solid #00FFFF;border-radius:7px}