:root{--bg-primary: #fff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--text-primary: #1e293b;--text-secondary: #64748b;--text-tertiary: #94a3b8;--border-primary: #e2e8f0;--border-secondary: #cbd5e1;--accent-primary: #2563eb;--accent-secondary: #3b82f6;--accent-hover: #1d4ed8;--shadow-sm: 0 1px 3px rgb(0 0 0 / 5%);--shadow-md: 0 4px 6px rgb(0 0 0 / 10%);--shadow-lg: 0 20px 25px rgb(0 0 0 / 10%);--error: #ef4444;--success: #10b981;--warning: #f59e0b}[data-theme=dark]{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-tertiary: #94a3b8;--border-primary: #334155;--border-secondary: #475569;--accent-primary: #3b82f6;--accent-secondary: #60a5fa;--accent-hover: #2563eb;--shadow-sm: 0 1px 3px rgb(0 0 0 / 30%);--shadow-md: 0 4px 6px rgb(0 0 0 / 30%);--shadow-lg: 0 20px 25px rgb(0 0 0 / 40%);--error: #f87171;--success: #34d399;--warning: #fbbf24}*{padding:0;box-sizing:border-box}body{font-family:system-ui,-apple-system,sans-serif;font-size:14px;color:var(--text-primary);background-color:var(--bg-primary);overflow:hidden;transition:background-color .3s ease,color .3s ease}.app-container{display:flex;flex-direction:column;height:100vh}.toolbar{height:60px;background:var(--bg-primary);border-bottom:1px solid var(--border-primary);display:flex;align-items:center;padding:0 20px;gap:12px;box-shadow:var(--shadow-sm);white-space:nowrap;transition:background-color .3s ease,border-color .3s ease;position:relative;z-index:10000}.toolbar-btn{padding:8px 16px;border:1px solid var(--border-primary);border-radius:6px;background:var(--bg-primary);color:var(--text-primary);font-size:13px;font-weight:500;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;gap:6px}.toolbar-btn:hover{background:var(--bg-secondary);border-color:var(--border-secondary)}.toolbar-btn.primary{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.toolbar-btn.primary:hover{background:var(--accent-secondary)}.toolbar-btn.active{background:var(--bg-tertiary);border-color:var(--accent-primary);color:var(--accent-primary)}.toolbar-divider{width:1px;height:30px;background:var(--border-primary);transition:background-color .3s ease}.toolbar-dropdown{position:relative;display:inline-block;z-index:99998}.dropdown-trigger{display:flex;align-items:center;gap:6px}.dropdown-arrow{font-size:10px;transition:transform .2s ease}.toolbar-dropdown:hover .dropdown-arrow{transform:rotate(180deg)}.toolbar-dropdown-menu{position:absolute;top:100%;left:0;margin-top:8px;min-width:220px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:8px;box-shadow:0 10px 40px #0003;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:99999!important;max-height:500px;overflow-y:auto}.toolbar-dropdown:hover .toolbar-dropdown-menu,.toolbar-dropdown.dropdown-open .toolbar-dropdown-menu{opacity:1;visibility:visible}.toolbar-dropdown.dropdown-open .dropdown-arrow{transform:rotate(180deg)}.dropdown-item{width:100%;padding:10px 16px;border:none;background:transparent;color:var(--text-primary);font-size:13px;text-align:left;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:space-between;gap:12px}.dropdown-item:hover:not(:disabled){background:var(--bg-secondary);color:var(--accent-primary)}.dropdown-item:disabled{opacity:.5;cursor:not-allowed}.dropdown-item.active{background:var(--bg-tertiary);color:var(--accent-primary);font-weight:500}.dropdown-divider{height:1px;background:var(--border-primary);margin:6px 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.category-arrow{transform:rotate(-90deg)}.component-list{display:flex;flex-direction:column;gap:8px}.component-list.collapsed{display:none}.component-item{padding:10px 12px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:6px;cursor:grab;transition:all .3s ease;font-size:13px}.component-item:hover{border-color:var(--accent-primary);background:var(--bg-tertiary);transform:translate(2px)}.component-item:active{cursor:grabbing}.component-item.dragging{opacity:.5;transform:scale(.95)}.drop-zone{background-color:#f0f9ff;border:2px dashed #2563eb}.canvas-panel{flex:1;background:var(--bg-tertiary);overflow:auto;padding:20px;display:flex;justify-content:center;transition:background-color .3s ease;position:relative;z-index:0}.canvas-wrapper{background:#fff;min-height:600px;width:100%;box-shadow:var(--shadow-md);transition:width .3s,box-shadow .3s ease;position:relative;z-index:0}.canvas-wrapper.tablet{width:768px}.canvas-wrapper.mobile{width:375px}#canvas{min-height:600px;padding:20px}.canvas-element{position:relative;outline:2px solid transparent;transition:outline .2s}.canvas-element:hover{outline:2px solid #cbd5e1}.canvas-element.selected{outline:2px dashed #2563eb!important}.delete-btn{position:absolute;top:-10px;right:-10px;width:24px;height:24px;background:#ef4444;color:#fff;border:2px solid white;border-radius:50%;cursor:pointer;display:none;align-items:center;justify-content:center;font-size:14px;font-weight:700;z-index:100}.canvas-element.selected .delete-btn{display:flex}.canvas-element[contenteditable=true]{outline:2px solid #10b981!important}.drop-indicator{height:4px;background:#2563eb;margin:4px 0;border-radius:2px;display:none}.canvas-element.dragging-canvas-element{opacity:.5;transform:scale(.95);outline:2px dashed #3b82f6!important}.canvas-element.drop-zone-active{background-color:#3b82f61a;outline:2px dashed #3b82f6!important}.canvas-element[draggable=true]:hover,.canvas-element[draggable=true].selected:hover{cursor:move}.drop-indicator{position:absolute;height:3px;background:linear-gradient(90deg,#3b82f6,#1d4ed8);border-radius:2px;z-index:1000;display:none;box-shadow:0 0 8px #3b82f699;animation:pulse-drop 1s infinite}@keyframes pulse-drop{0%,to{opacity:1}50%{opacity:.7}}.drop-indicator.active{display:block}.properties-panel{width:320px;background:var(--bg-secondary);border-left:1px solid var(--border-primary);overflow-y:auto;padding:20px;transition:background-color .3s ease,border-color .3s ease;position:relative;z-index:0}.properties-empty{color:var(--text-secondary);text-align:center;margin-top:60px;font-size:14px;line-height:1.8;transition:color .3s ease;padding:20px;background:var(--bg-primary);border-radius:8px;border:1px dashed var(--border-primary)}.property-section{margin-bottom:16px;background:var(--bg-primary);border-radius:10px;border:1px solid var(--border-primary);overflow:hidden;transition:all .3s ease}.property-section:hover{border-color:var(--border-secondary);box-shadow:0 2px 8px #0000000d}.section-title{font-size:13px;font-weight:600;color:var(--text-primary);text-transform:uppercase;letter-spacing:.5px;padding:14px 16px;background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-tertiary) 100%);transition:all .3s ease;display:flex;align-items:center;justify-content:space-between;cursor:pointer;user-select:none}.section-title:hover{background:linear-gradient(135deg,var(--bg-tertiary) 0%,var(--bg-secondary) 100%)}.section-title-left{display:flex;align-items:center;gap:10px}.section-badge{background:var(--accent-primary);color:#fff;font-size:11px;font-weight:600;padding:2px 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var(--border-primary);background:var(--bg-primary);color:var(--text-primary)}.quick-action-btn.primary{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.quick-action-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.category-filters{display:flex;gap:12px;justify-content:center;margin-bottom:40px;flex-wrap:wrap}.category-btn{padding:10px 20px;border:2px solid var(--border-primary);background:var(--bg-primary);color:var(--text-secondary);border-radius:20px;cursor:pointer;font-weight:500;transition:all .3s ease}.category-btn.active{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.category-btn:hover{border-color:var(--accent-primary)}.templates-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-bottom:40px}@media (width <= 1024px){.templates-grid{grid-template-columns:repeat(2,1fr)}}@media (width <= 640px){.templates-grid{grid-template-columns:1fr}.toolbar{overflow-x:auto;padding:0 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.preview-actions{margin-top:24px;display:flex;gap:12px;justify-content:flex-end;padding-top:20px;border-top:1px solid var(--border-primary)}.file-preview-modal .load-btn{background:var(--accent-primary);color:#fff;border:none;padding:12px 28px;border-radius:8px;cursor:pointer;font-weight:600;font-size:14px;transition:all .2s ease;display:flex;align-items:center;gap:8px}.file-preview-modal .load-btn:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #2563eb4d}.file-preview-modal .load-btn:before{content:"📁"}.file-preview-modal .cancel-btn{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-primary);padding:12px 28px;border-radius:8px;cursor:pointer;font-weight:600;font-size:14px;transition:all .2s ease}.file-preview-modal .cancel-btn:hover{background:var(--bg-secondary);border-color:var(--border-secondary)}.file-loader-progress{position:fixed;bottom:30px;right:30px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:12px;padding:20px 24px;box-shadow:0 10px 40px #0003;z-index:2500;min-width:300px;animation:slideInRight .3s ease}@keyframes slideInRight{0%{opacity:0;transform:translate(100px)}to{opacity:1;transform:translate(0)}}.file-loader-progress .progress-bar{width:100%;height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden;margin-bottom:12px}.file-loader-progress .progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));border-radius:4px;transition:width .3s ease}.file-loader-progress 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