:root{--sans:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--surface:#f7f8fb;--panel:#fff;--canvas:#eef3f8;--grid-line:#5d6d7e1f;--border:#d6dce5;--text:#526070;--text-strong:#16202c;--accent:#2563eb;--accent-soft:#e7efff;--accent-ring:#2563eb2e;--drop-zone:#2563eb14;--button-bg:#fff;--badge-bg:#f1f5f9;--badge-border:#cbd5e1;--node-bg:#fff;--node-border:#cfd8e5;--root-bg:#e8f5ee;--root-border:#69b27e;--connector:#8aa1bd;--danger:#b42318;--shadow:0 10px 24px #1f2a371c;font-family:var(--sans);color:var(--text);background:var(--surface);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{min-width:320px;margin:0;overflow:hidden}button,input{letter-spacing:0}button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}#root{width:100vw;height:100svh;overflow:hidden}.app-shell{background:var(--surface);grid-template-columns:260px minmax(0,1fr);width:100vw;height:100svh;display:grid;overflow:hidden}.map-sidebar{border-right:1px solid var(--border);background:var(--panel);flex-direction:column;gap:16px;min-height:0;padding:18px;display:flex;overflow:hidden}.sidebar-heading{color:var(--text-strong);justify-content:space-between;align-items:center;gap:12px;font-weight:700;display:flex}.icon-button,.toolbar-button,.secondary-button{border:1px solid var(--border);background:var(--button-bg);min-height:36px;color:var(--text-strong);font:inherit;cursor:pointer;border-radius:6px}.icon-button{width:36px;font-size:22px;line-height:1}.map-list{gap:8px;display:grid;overflow:auto}.map-list-item{min-height:40px;color:var(--text);font:inherit;text-align:left;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:6px;padding:8px 10px}.map-list-item:hover,.map-list-item.active{border-color:var(--accent);background:var(--accent-soft);color:var(--text-strong)}.secondary-button{margin-top:auto;padding:8px 10px}button:disabled{cursor:not-allowed;opacity:.48}.workspace{grid-template-rows:auto minmax(0,1fr);min-width:0;min-height:0;display:grid;overflow:hidden}.toolbar{border-bottom:1px solid var(--border);background:var(--surface);justify-content:space-between;align-items:center;gap:16px;min-width:0;padding:14px 18px;display:flex}.map-title-input{width:min(420px,100%);color:var(--text-strong);font:700 20px/1.2 var(--sans);background:0 0;border:1px solid #0000;border-radius:6px;padding:8px 10px}.map-title-input:focus{border-color:var(--accent);background:var(--panel);outline:none}.toolbar-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.style-picker{border:1px solid var(--border);background:var(--button-bg);border-radius:7px;min-height:36px;padding:3px;display:inline-flex}.style-option{min-height:28px;color:var(--text);font:700 12px/1.2 var(--sans);cursor:pointer;background:0 0;border:0;border-radius:5px;padding:4px 9px}.style-option.active{background:var(--accent-soft);color:var(--accent)}.toolbar-button{grid-template-columns:22px auto;align-items:center;gap:8px;min-width:74px;padding:6px 8px;display:inline-grid}.toolbar-button:hover,.icon-button:hover,.secondary-button:hover{border-color:var(--accent)}.toolbar-icon{color:currentColor;width:22px;height:22px;display:inline-flex}.toolbar-icon svg{fill:none;stroke:currentColor;stroke-width:1.9px;stroke-linecap:round;stroke-linejoin:round;width:22px;height:22px}.shortcut-badge{border:1px solid var(--badge-border);background:var(--badge-bg);min-width:32px;color:var(--text);font:600 11px/1.35 var(--sans);text-align:center;white-space:nowrap;border-radius:5px;padding:2px 5px}.danger-button{color:var(--danger)!important}.mindmap-board{cursor:grab;-webkit-user-select:none;user-select:none;background:var(--canvas);min-width:0;min-height:0;padding:0;position:relative;overflow:hidden}.mindmap-board.panning{cursor:grabbing}.mindmap-board:focus{outline:2px solid var(--accent);outline-offset:-2px}.mindmap-canvas{margin:0 auto;position:relative}.mindmap-zoom-layer{transform-origin:0 0;position:relative}.zoom-control{z-index:20;border:1px solid var(--border);box-shadow:var(--shadow);background:#ffffffeb;border-radius:8px;align-items:center;gap:4px;padding:5px;display:inline-flex;position:fixed;bottom:18px;right:18px}.zoom-control button{min-width:32px;min-height:30px;color:var(--text-strong);font:800 13px/1 var(--sans);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:6px}.zoom-control button:hover{border-color:var(--accent);background:var(--accent-soft)}.zoom-control .zoom-value{min-width:58px;color:var(--accent)}.drop-zone{z-index:0;pointer-events:auto;border:2px dashed #0000;position:absolute;top:0;bottom:0}.drop-zone.left{left:0;right:50%}.drop-zone.right{left:50%;right:0}.drop-zone.active{border-color:var(--accent);background:var(--drop-zone)}.connectors{pointer-events:none;position:absolute;inset:0;overflow:visible}.connectors path{fill:none;stroke:var(--connector);stroke-width:2.5px}.mind-node{z-index:1;border:1px solid var(--node-accent,var(--node-border));box-sizing:border-box;background:var(--node-soft-bg,var(--node-bg));min-width:96px;max-width:320px;min-height:48px;color:var(--node-accent,var(--text-strong));font-family:var(--mindmap-font,var(--sans));box-shadow:var(--shadow);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:8px;grid-template-columns:22px minmax(0,1fr);align-items:center;gap:6px;padding:6px 10px;display:grid;position:absolute}.map-style-playful .mind-node{border-radius:999px;padding-inline:16px}.map-style-playful .root-node{border-radius:999px}.mind-node.editing{z-index:5;min-width:220px;min-height:74px}.mind-node[draggable=true]{cursor:grab}.mind-node[draggable=true]:active{cursor:grabbing}.mind-node.selected{border-color:var(--node-accent,var(--accent));box-shadow:0 0 0 3px var(--accent-ring), var(--shadow)}.root-node{border-width:2px;border-color:var(--node-accent,var(--root-border));background:linear-gradient(180deg, #ffffffb8, #ffffff52), var(--node-soft-bg,var(--root-bg));text-align:center;min-width:132px;max-width:380px;min-height:64px;box-shadow:0 0 0 4px #ffffffd1,0 18px 36px #1f2a372e}.root-node .node-title,.root-node .node-input{font-size:var(--node-font-size,18px);font-weight:var(--node-font-weight,800)}.root-node .node-display-icon,.root-node .node-display-icon svg{width:26px;height:26px}.side-left{grid-template-columns:22px minmax(0,1fr)}.collapse-button{z-index:-1;border:1px solid var(--node-accent,var(--border));width:22px;height:22px;color:var(--node-accent,var(--text-strong));cursor:pointer;background:#fff;border-radius:50%;line-height:18px;position:absolute;top:50%;left:-14px;transform:translateY(-50%)}.side-left .collapse-button{left:auto;right:-14px}.collapse-button:disabled{background:0 0;border-color:#0000}.node-display-icon{width:22px;height:22px;color:var(--node-accent,currentColor);grid-area:1/1;display:inline-flex}.node-display-icon svg{fill:none;stroke:currentColor;stroke-width:1.9px;stroke-linecap:round;stroke-linejoin:round;width:22px;height:22px}.node-title{overflow-wrap:anywhere;white-space:pre-wrap;text-align:left;font-size:var(--node-font-size,15px);font-weight:var(--node-font-weight,500);grid-area:1/2;line-height:1.28}.node-title a{color:inherit;text-underline-offset:2px;cursor:pointer;text-decoration:underline}.node-input{resize:vertical;border:1px solid var(--accent);box-sizing:border-box;background:var(--surface);width:100%;min-width:0;min-height:58px;color:var(--text-strong);font:inherit;font-family:var(--mindmap-font,var(--sans));font-size:var(--node-font-size,15px);font-weight:var(--node-font-weight,500);border-radius:5px;grid-area:1/2;padding:5px 7px;line-height:1.28}.node-input:focus{outline:none}.node-style-panel{z-index:30;border:1px solid var(--border);background:var(--panel);width:300px;box-shadow:var(--shadow);border-radius:8px;padding:12px;position:fixed;top:88px;bottom:74px;right:18px;overflow-y:auto}.node-style-panel-heading{color:var(--text-strong);justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;font-weight:800;display:flex}.panel-close-button{border:1px solid var(--border);background:var(--button-bg);width:30px;height:30px;color:var(--text-strong);cursor:pointer;border-radius:6px}.panel-section{gap:7px;margin-bottom:12px;display:grid}.panel-label{color:var(--text);font:800 12px/1.2 var(--sans);text-transform:uppercase}.icon-picker{grid-template-columns:repeat(8,1fr);gap:6px;max-height:152px;margin-bottom:8px;display:grid;overflow-y:auto}.picker-icon-button{border:1px solid var(--border);background:var(--button-bg);height:32px;color:var(--node-accent,var(--text-strong));cursor:pointer;border-radius:6px;justify-content:center;align-items:center;display:inline-flex}.picker-icon-button.active{border-color:var(--node-accent,var(--accent));background:var(--node-soft-bg,var(--accent-soft))}.picker-icon-button svg{fill:none;stroke:currentColor;stroke-width:1.9px;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}.color-picker{grid-template-columns:repeat(4,1fr);gap:6px;display:grid}.color-swatch{cursor:pointer;border:2px solid #0000;border-radius:6px;height:24px}.color-swatch.active{border-color:var(--text-strong);box-shadow:0 0 0 2px var(--panel), 0 0 0 4px var(--node-accent,var(--accent))}.text-style-row{grid-template-columns:38px minmax(0,1fr);gap:8px;margin-top:8px;display:grid}.text-style-toggle,.font-size-option{border:1px solid var(--border);background:var(--button-bg);min-height:30px;color:var(--text-strong);cursor:pointer;border-radius:6px}.text-style-toggle{font:900 16px/1 var(--sans)}.font-size-picker{grid-template-columns:repeat(4,1fr);gap:6px;display:grid}.font-size-option{font:800 12px/1 var(--sans)}.text-style-toggle.active,.font-size-option.active{border-color:var(--node-accent,var(--accent));background:var(--node-soft-bg,var(--accent-soft));color:var(--node-accent,var(--accent))}.node-edit-actions{justify-content:flex-end;margin-top:8px;display:flex}.save-node-button{border:1px solid var(--node-accent,var(--accent));background:var(--node-accent,var(--accent));color:#fff;min-height:30px;font:700 13px/1.2 var(--sans);cursor:pointer;border-radius:6px;padding:5px 10px}@media (width<=820px){.app-shell{grid-template-rows:auto minmax(0,1fr);grid-template-columns:1fr}.map-sidebar{border-right:0;border-bottom:1px solid var(--border);max-height:168px}.map-list{grid-auto-columns:minmax(150px,1fr);grid-auto-flow:column;overflow-x:auto}.secondary-button{margin-top:0}.toolbar{flex-direction:column;align-items:stretch}.toolbar-actions{justify-content:flex-start}}