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button:hover{background:var(--accent-500)}.section-node{width:100%;height:100%;background:var(--section-bg);border-radius:var(--radius-xl);transition:background .2s ease,box-shadow .2s ease}.section-node.selected{box-shadow:0 0 0 2px color-mix(in srgb,var(--section-accent) 45%,transparent)}.section-node.drop-target{background:color-mix(in srgb,var(--section-accent) 14%,transparent);box-shadow:0 0 0 2px color-mix(in srgb,var(--section-accent) 60%,transparent)}.section-node.collapsed{background:var(--section-bg)}.sec-head{position:relative;z-index:5;display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-4) 0}.sec-chev,.sec-btn{display:flex;align-items:center;justify-content:center;width:22px;height:22px;padding:0;border:none;border-radius:50%;background:var(--section-chip-bg);color:var(--section-accent);cursor:pointer;box-shadow:0 2px 8px #5a52821f;transition:var(--hover-transition);flex-shrink:0}.sec-chev:hover,.sec-btn:hover{transform:translateY(-1px)}.sec-name{font-size:var(--text-xs);font-weight:600;color:var(--section-text);letter-spacing:-.005em;cursor:text;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sec-name-input{font-size:var(--text-xs);font-weight:600;color:var(--section-text);background:transparent;border:none;border-bottom:1px solid var(--section-accent);font-family:inherit;padding:0 0 1px;min-width:80px}.sec-name-input:focus{outline:none}.sec-count{font-size:9px;font-weight:600;padding:2px 8px;border-radius:var(--radius-pill);background:var(--section-chip-bg);color:var(--section-text-mute);box-shadow:0 2px 8px #5a52821a;flex-shrink:0}.sec-spacer{flex:1}.sec-menu-wrap{position:relative}.sec-menu-popover{position:absolute;top:26px;right:0;display:flex;flex-direction:column;min-width:140px;padding:var(--space-1);background:var(--surface-menu, var(--chrome-bg));border-radius:var(--radius-sm);box-shadow:var(--chrome-shadow-soft);z-index:20}.sec-menu-popover button{padding:var(--space-2) var(--space-3);border:none;border-radius:var(--radius-xs);background:transparent;color:var(--text-primary);font-size:var(--text-xs);font-family:inherit;text-align:left;cursor:pointer;transition:var(--hover-transition)}.sec-menu-popover button:hover{background:var(--hover-overlay)}.export-menu{position:fixed;bottom:76px;left:50%;transform:translate(-50%);z-index:110;display:flex;flex-direction:column;min-width:200px;padding:var(--space-1);background:var(--chrome-bg);border-radius:var(--radius-md);box-shadow:var(--chrome-shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.export-menu button{padding:var(--space-2) var(--space-3);border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-chrome);font-size:var(--text-md);font-family:inherit;text-align:left;cursor:pointer;transition:var(--hover-transition)}.export-menu button:hover{background:var(--icon-active-bg);color:var(--icon-active-fg)}.import-overlay{position:fixed;inset:0;z-index:200;display:grid;place-items:center;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.import-dialog{display:flex;flex-direction:column;gap:var(--space-3);width:min(560px,calc(100vw - 48px));padding:var(--space-5);background:var(--surface-menu, var(--chrome-bg));border-radius:var(--radius-lg);box-shadow:var(--chrome-shadow)}.import-head{display:flex;align-items:center;justify-content:space-between}.import-head h2{font-size:var(--text-lg);font-weight:600;letter-spacing:-.01em;color:var(--text-primary);margin:0}.import-close{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);cursor:pointer;transition:var(--hover-transition)}.import-close:hover{background:var(--hover-overlay);color:var(--text-primary)}.import-hint{font-size:var(--text-sm);line-height:1.5;color:var(--text-secondary);margin:0}.import-textarea{width:100%;min-height:200px;padding:var(--space-3);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:var(--input-bg);color:var(--input-textarea-color);font-family:DM Mono,monospace;font-size:var(--text-xs);line-height:1.5;resize:vertical}.import-textarea::placeholder{color:var(--input-placeholder)}.import-foot{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3)}.import-count{font-size:var(--text-xs);color:var(--text-muted)}.import-submit{padding:var(--space-2) var(--space-4);border:none;border-radius:var(--radius-pill);background:var(--accent-400);color:var(--text-inverse);font-size:var(--text-md);font-weight:600;font-family:inherit;cursor:pointer;transition:var(--hover-transition)}.import-submit:disabled{opacity:.4;cursor:not-allowed}.mobile-layout{position:relative;width:100vw;height:100dvh;overflow:hidden;background:var(--surface-canvas);color:var(--text-primary)}.mobile-canvas-wrapper,.mobile-chat-wrapper{position:absolute;top:0;left:0;width:100%;height:calc(100dvh - 56px - env(safe-area-inset-bottom))}.mobile-canvas-wrapper .canvas-drop-zone,.mobile-canvas-wrapper .react-flow{width:100%;height:100%}.mobile-chat-wrapper{background:var(--glass-heavy);display:flex;flex-direction:column;overflow:hidden}.mobile-hidden{visibility:hidden;pointer-events:none;position:absolute;z-index:-1}@media(max-width:767px){:root{--handle-hit-area: 44px;--handle-size: 18px}.mobile-chat-wrapper textarea,#chat-input{font-size:16px!important}.artifact-node{min-width:200px}.feedback-trigger{display:none!important}.feedback-modal{width:calc(100vw - 32px)!important;max-width:380px!important}.minimized-chat-tab,.chat-hub-button,.side-rail{display:none!important}}.mobile-toolbar{position:fixed;bottom:0;left:0;right:0;height:calc(56px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:flex;align-items:center;justify-content:space-around;background:var(--surface-primary);border-top:1px solid var(--border-subtle);z-index:50}.mobile-toolbar-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;padding:8px 12px;background:none;border:none;color:var(--text-secondary);font-size:10px;font-family:inherit;cursor:pointer;min-width:44px;min-height:44px;-webkit-tap-highlight-color:transparent}.mobile-toolbar-btn.active{color:var(--accent-400)}.spreadsheet-node-body{display:flex;flex-direction:column;width:100%;height:100%;min-height:0;overflow:hidden}.spreadsheet-stat-bar{display:flex;align-items:center;gap:4px;padding:6px 12px;font-size:10px;font-family:JetBrains Mono,DM Mono,monospace;color:var(--text-tertiary);border-bottom:1px solid var(--node-badge-bg-spreadsheet, rgba(16,185,129,.1))}.spreadsheet-stat-dot{opacity:.4;margin:0 2px}.spreadsheet-table-wrapper{flex:1;min-height:0;overflow:auto;padding:4px}.spreadsheet-preview-table{width:100%;border-collapse:collapse;font-size:10px;color:var(--text-primary)}.spreadsheet-preview-table th,.spreadsheet-preview-table td{padding:3px 6px;text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100px;border-bottom:1px solid var(--border-subtle)}.spreadsheet-preview-table th{font-weight:600;font-size:9px;text-transform:uppercase;letter-spacing:.03em;color:var(--text-secondary);position:sticky;top:0;background:var(--surface-node, var(--surface-primary));z-index:1}.spreadsheet-preview-table tbody tr:nth-child(2n){background:#ffffff05}.spreadsheet-more-col{color:var(--text-muted);text-align:center}.spreadsheet-truncation{padding:4px 6px;font-size:10px;color:var(--text-muted);text-align:center;font-style:italic}.spreadsheet-sheet-tabs{display:flex;gap:2px;padding:4px 6px;border-top:1px solid var(--border-subtle);overflow-x:auto;flex-shrink:0}.spreadsheet-sheet-tab{padding:2px 8px;font-size:9px;font-weight:500;border:none;border-radius:4px;background:transparent;color:var(--text-muted);cursor:pointer;white-space:nowrap;transition:background .12s,color .12s}.spreadsheet-sheet-tab:hover{background:var(--hover-overlay);color:var(--text-secondary)}.spreadsheet-sheet-tab.active{background:var(--node-accent-spreadsheet, #10B981);color:#fff}.feedback-link{display:flex;align-items:center;gap:4px;font-family:JetBrains Mono,monospace;font-size:11px;color:var(--text-muted);background:none;border:1px solid transparent;border-radius:6px;padding:4px 8px;margin-left:8px;cursor:pointer;transition:color .15s,border-color .15s;-webkit-user-select:none;user-select:none}.feedback-link:hover{color:var(--text-primary);border-color:var(--border-subtle)}.feedback-overlay{position:fixed;inset:0;background:#0006;z-index:200}.feedback-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);width:380px;background:var(--surface-overlay);border:1px solid var(--border-default);border-radius:14px;padding:20px;z-index:201;box-shadow:0 16px 48px #0006;animation:feedbackIn .18s var(--ease-out) both}@keyframes feedbackIn{0%{opacity:0;transform:translate(-50%,-48%)}to{opacity:1;transform:translate(-50%,-50%)}}.feedback-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.feedback-title{font-family:JetBrains Mono,monospace;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--text-primary)}.feedback-close{width:24px;height:24px;border:none;background:transparent;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:color .15s}.feedback-close:hover{color:var(--text-primary)}.feedback-type-row{display:flex;gap:6px;margin-bottom:14px}.feedback-type-btn{font-family:JetBrains Mono,monospace;font-size:11px;padding:5px 12px;border-radius:6px;border:1px solid var(--border-subtle);background:transparent;color:var(--text-secondary);cursor:pointer;transition:all .15s}.feedback-type-btn:hover{border-color:var(--border-default);color:var(--text-primary)}.feedback-type-btn.active{background:var(--accent-glow);border-color:var(--accent-400);color:var(--accent-400)}.feedback-textarea{width:100%;min-height:100px;padding:10px 12px;border:1px solid var(--border-subtle);border-radius:8px;background:var(--surface-node);color:var(--text-primary);font-family:DM Sans,sans-serif;font-size:13px;line-height:1.5;resize:vertical;margin-bottom:10px;transition:border-color .15s;box-sizing:border-box}.feedback-textarea:focus{outline:none;border-color:var(--accent-400)}.feedback-textarea::placeholder{color:var(--text-muted)}.feedback-email{width:100%;padding:8px 12px;border:1px solid var(--border-subtle);border-radius:8px;background:var(--surface-node);color:var(--text-primary);font-family:DM Sans,sans-serif;font-size:12px;margin-bottom:16px;transition:border-color .15s;box-sizing:border-box}.feedback-email:focus{outline:none;border-color:var(--accent-400)}.feedback-email::placeholder{color:var(--text-muted)}.feedback-submit{width:100%;padding:10px;border:none;border-radius:8px;background:var(--accent-400);color:var(--surface-canvas);font-family:DM Sans,sans-serif;font-size:13px;font-weight:600;cursor:pointer;transition:opacity .15s}.feedback-submit:hover:not(:disabled){opacity:.9}.feedback-submit:disabled{opacity:.4;cursor:default}.feedback-confirmation{text-align:center;padding:24px 0}.feedback-check{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:#34d39926;color:#34d399;font-size:18px;margin-bottom:10px}.feedback-confirmation p{font-size:13px;color:var(--text-secondary);margin:0}.feedback-prompt-toast{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-secondary)}.feedback-prompt-toast button{font-family:JetBrains Mono,monospace;font-size:11px;border:none;background:transparent;cursor:pointer;padding:2px 6px;border-radius:4px;transition:all .15s}.feedback-prompt-toast button:first-of-type{color:var(--accent-400)}.feedback-prompt-toast button:first-of-type:hover{background:var(--accent-glow)}.feedback-prompt-toast button:last-of-type{color:var(--text-muted)}