:root{--flow-primary: #6366f1;--flow-primary-hover: #4f46e5;--flow-success: #10b981;--flow-success-hover: #059669;--flow-danger: #ef4444;--flow-warning: #f59e0b;--flow-bg: #f8fafc;--flow-surface: #ffffff;--flow-border: #e2e8f0;--flow-text-primary: #0f172a;--flow-text-secondary: #64748b;--flow-text-muted: #94a3b8;--flow-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--flow-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--flow-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--flow-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--flow-radius-sm: 6px;--flow-radius-md: 8px;--flow-radius-lg: 12px;--flow-radius-xl: 16px}.flow-builder-page-wrapper{width:100%;height:100%;position:relative;background:var(--flow-bg);border-radius:var(--flow-radius-lg);overflow:hidden;transition:all .3s cubic-bezier(.4,0,.2,1)}.flow-builder-page-wrapper.flow-fullscreen{position:fixed!important;top:0!important;left:0!important;right:0!important;bottom:0!important;width:100vw!important;height:100vh!important;z-index:9999!important;border-radius:0!important;background:var(--flow-bg)}.flow-builder-container{display:flex;flex-direction:column;height:100%;width:100%;background:#fafafa;position:relative}.flow-builder-container.flow-fullscreen-active{height:100vh;width:100vw}.flow-header{display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid #e5e7eb;padding:.75rem 1.25rem;box-shadow:0 1px 2px #0000000d;z-index:100;flex-shrink:0;gap:1rem}.flow-header-left{display:flex;align-items:center;gap:1rem;flex:1;overflow-x:auto;min-width:0;scrollbar-width:none;-ms-overflow-style:none}.flow-header-left::-webkit-scrollbar{display:none}.flow-header-divider{width:1px;height:28px;background:linear-gradient(to bottom,transparent,var(--flow-border),transparent);flex-shrink:0}.flow-preset-button{padding:.75rem 1.5rem;background:linear-gradient(135deg,var(--flow-primary) 0%,var(--flow-primary-hover) 100%);color:#fff;border:none;border-radius:var(--flow-radius-md);cursor:pointer;font-weight:600;font-size:.9375rem;white-space:nowrap;transition:all .2s cubic-bezier(.4,0,.2,1);box-shadow:var(--flow-shadow-sm);display:flex;align-items:center;gap:.625rem}.flow-preset-button:hover{transform:translateY(-1px);box-shadow:var(--flow-shadow-md);background:linear-gradient(135deg,var(--flow-primary-hover) 0%,#4338ca 100%)}.flow-preset-button:active{transform:translateY(0)}.flow-node-palette{display:flex;align-items:center;gap:.5rem;overflow-x:auto;overflow-y:visible;flex:1;min-width:0;padding:.5rem .75rem;scrollbar-width:thin;scrollbar-color:var(--flow-border) transparent;position:relative;z-index:1}.flow-node-palette::-webkit-scrollbar{height:4px}.flow-node-palette::-webkit-scrollbar-track{background:transparent}.flow-node-palette::-webkit-scrollbar-thumb{background:var(--flow-border);border-radius:2px}.flow-node-palette::-webkit-scrollbar-thumb:hover{background:var(--flow-text-muted)}.flow-palette-button{display:flex;flex-direction:column;align-items:center;justify-content:center;width:45px;height:45px;border-radius:8px;background:var(--flow-surface);border:1px solid var(--flow-border);cursor:grab;cursor:-webkit-grab;transition:all .2s cubic-bezier(.4,0,.2,1);box-shadow:0 1px 2px #0000000d;flex-shrink:0;padding:0;position:relative;overflow:visible;gap:0}.flow-palette-button:active{cursor:grabbing;cursor:-webkit-grabbing}.flow-palette-button:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,#6366f10d,#6366f105);opacity:0;transition:opacity .2s ease;border-radius:50%;z-index:0}.flow-palette-button:hover{transform:translateY(-2px);border-color:var(--flow-primary);box-shadow:0 4px 8px #6366f126;background:var(--flow-surface)}.flow-palette-button:hover:before{opacity:1}.flow-palette-button:active{transform:translateY(0) scale(.98)}.flow-palette-icon{font-size:1.25rem;display:flex;align-items:center;justify-content:center;color:var(--flow-primary);position:relative;z-index:1;transition:all .3s cubic-bezier(.4,0,.2,1);width:100%;height:100%;flex-shrink:0;filter:drop-shadow(0 1px 2px rgba(0,0,0,.1))}.flow-palette-icon svg{width:24px;height:24px;stroke-width:2.5px}.flow-palette-button:hover .flow-palette-icon{transform:scale(1.1) rotate(3deg);filter:drop-shadow(0 2px 4px rgba(99,102,241,.25))}.flow-palette-label{font-size:.625rem;color:var(--flow-text-primary);font-weight:600;text-align:center;line-height:1.2;position:relative;z-index:2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%;margin-top:.125rem;letter-spacing:.01em;transition:all .3s ease;display:block;width:100%;padding:0 .25rem;flex-shrink:0}.flow-palette-button:hover .flow-palette-label{color:var(--flow-primary);transform:translateY(-2px)}.flow-palette-item-wrapper{position:relative;display:flex;flex-direction:column;align-items:center;z-index:10000;margin-bottom:0}.flow-node-palette{overflow-x:auto;overflow-y:visible!important;padding-bottom:.5rem;position:relative;z-index:1}.flow-header{position:relative;z-index:100;overflow:visible!important}.flow-header-left{overflow:visible!important}.flow-palette-tooltip{position:fixed;background:linear-gradient(135deg,#1e293b,#0f172a);color:#fff;padding:.625rem 1rem;border-radius:8px;font-size:.75rem;font-weight:600;white-space:nowrap;opacity:0;pointer-events:none;transition:all .3s cubic-bezier(.4,0,.2,1);z-index:999999!important;box-shadow:0 8px 24px #0003,0 4px 8px #00000026;border:1px solid rgba(255,255,255,.15);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);min-width:-moz-max-content;min-width:max-content;transform:translate(-50%) translateY(5px)}.flow-palette-tooltip:before{content:"";position:absolute;top:-5px;left:50%;transform:translate(-50%);border:5px solid transparent;border-bottom-color:#1e293b;filter:drop-shadow(0 -2px 2px rgba(0,0,0,.1))}.flow-palette-item-wrapper:hover .flow-palette-tooltip,.react-flow__controls-button-wrapper:hover .react-flow__controls-tooltip{opacity:1;pointer-events:auto}.react-flow__controls-tooltip{position:fixed;background:linear-gradient(135deg,#1e293b,#0f172a);color:#fff;padding:.625rem 1rem;border-radius:8px;font-size:.75rem;font-weight:600;white-space:nowrap;opacity:0;pointer-events:none;transition:all .3s cubic-bezier(.4,0,.2,1);z-index:999999!important;box-shadow:0 8px 24px #0003,0 4px 8px #00000026;border:1px solid rgba(255,255,255,.15);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);min-width:-moz-max-content;min-width:max-content;transform:translate(-50%,-50%)}.react-flow__controls-tooltip.tooltip-right{transform:translateY(-50%)}.react-flow__controls-tooltip.tooltip-right:before{content:"";position:absolute;left:-5px;top:50%;transform:translateY(-50%);border:5px solid transparent;border-right-color:#1e293b;filter:drop-shadow(-2px 0 2px rgba(0,0,0,.1))}.react-flow__controls-tooltip.tooltip-left{transform:translate(-100%,-50%)}.react-flow__controls-tooltip.tooltip-left:before{content:"";position:absolute;right:-5px;top:50%;transform:translateY(-50%);border:5px solid transparent;border-left-color:#1e293b;filter:drop-shadow(2px 0 2px rgba(0,0,0,.1))}.react-flow__controls-tooltip.tooltip-top{transform:translate(-50%,-100%)}.react-flow__controls-tooltip.tooltip-top:before{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:5px solid transparent;border-top-color:#1e293b;filter:drop-shadow(0 2px 2px rgba(0,0,0,.1))}.flow-action-disabled{opacity:.5!important;cursor:not-allowed!important;pointer-events:none}.flow-header-actions{display:flex;align-items:center;gap:.5rem;margin-left:auto;flex-shrink:0}.flow-action-group{display:flex;align-items:center;gap:.5rem;padding:0 .5rem;border-radius:var(--flow-radius-md);background:#6366f108}.flow-action-button{padding:.75rem 1.25rem;background:var(--flow-surface);border:2px solid var(--flow-border);border-radius:var(--flow-radius-md);cursor:pointer;font-weight:600;color:var(--flow-text-primary);transition:all .2s cubic-bezier(.4,0,.2,1);font-size:.9375rem;display:flex;align-items:center;gap:.625rem;white-space:nowrap;position:relative}.flow-action-button.flow-action-icon-only{padding:.75rem;min-width:44px;justify-content:center}.flow-action-button svg{width:20px;height:20px}.flow-action-button:hover{background:var(--flow-bg);border-color:var(--flow-primary);color:var(--flow-primary);transform:translateY(-1px);box-shadow:var(--flow-shadow-sm)}.flow-action-button:active{transform:translateY(0)}.flow-save-button{background:linear-gradient(135deg,var(--flow-success) 0%,var(--flow-success-hover) 100%);color:#fff;border-color:var(--flow-success);box-shadow:var(--flow-shadow-sm);font-weight:700;font-size:.9375rem;padding:.75rem 1.5rem}.flow-save-button svg{width:20px;height:20px}.flow-save-button:hover{background:linear-gradient(135deg,var(--flow-success-hover) 0%,#047857 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var(--flow-bg);padding-top:1rem;margin-top:1.5rem}.flow-canvas-wrapper{flex:1;position:relative;background:#fafafa;overflow:hidden;padding:2rem;display:flex;align-items:center;justify-content:center}.react-flow__node{margin:0!important}.react-flow__edge{stroke-width:2px;stroke:#9ca3af}.react-flow__edge-path{stroke-width:2px}.react-flow__edge.selected .react-flow__edge-path{stroke:var(--flow-primary);stroke-width:2.5px}.react-flow__node-default{padding:0!important}.flow-canvas{width:100%;height:100%}.flow-node{transition:all .2s cubic-bezier(.4,0,.2,1);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:#fff;border-radius:8px;padding:.875rem;min-width:240px;max-width:280px;box-shadow:0 1px 3px #0000001a,0 1px 2px #0000000f;border:1px solid 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h3{margin:0;font-size:1.5rem;font-weight:700;color:var(--flow-text-primary)}.flow-preset-close{background:none;border:none;font-size:1.5rem;color:var(--flow-text-secondary);cursor:pointer;padding:.5rem;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:var(--flow-radius-md);transition:all .2s ease}.flow-preset-close:hover{background:var(--flow-bg);color:var(--flow-text-primary)}.flow-preset-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem;padding:2rem}.flow-preset-card{border:2px solid var(--flow-border);border-radius:var(--flow-radius-lg);padding:1.5rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);background:var(--flow-surface);position:relative;overflow:hidden}.flow-preset-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--flow-primary),var(--flow-primary-hover));transform:scaleX(0);transition:transform .3s 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768px){.flow-header{flex-direction:column;gap:1rem;padding:1rem}.flow-node-palette{width:100%;justify-content:flex-start;gap:.5rem}.flow-palette-button{width:60px;height:60px;padding:.5rem}.flow-palette-icon svg{width:20px;height:20px}.flow-palette-label{font-size:.625rem}.flow-header-actions{width:100%;justify-content:space-between;margin-left:0;flex-wrap:wrap}.flow-action-button{padding:.5rem;font-size:.8125rem}.flow-config-panel{position:absolute;left:0;top:0;bottom:0;width:85%;max-width:380px;z-index:200;box-shadow:var(--flow-shadow-xl)}.flow-preset-grid{grid-template-columns:1fr;padding:1.5rem}.flow-canvas-wrapper{padding:1rem}.flow-node{min-width:240px;max-width:280px;padding:1.25rem}}@media (max-width: 480px){.flow-palette-button{width:55px;height:55px}.flow-palette-icon 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