:root{color-scheme:light;font-family:Inter,ui-sans-serif,system-ui,sans-serif;--bg-app: #eef0f4;--bg-canvas: #fbfbfd;--bg-surface: #ffffff;--bg-hover: #f4f5f8;--border: #e3e5ea;--border-strong: #d3d6de;--text: #1f2430;--text-muted: #6b7280;--accent: #4262ff;--accent-soft: #eaefff;--danger: #e0245e;--danger-soft-bg: #fef1f4;--danger-soft-border: #f4c3d3;--danger-soft-text: #a4123f;--status-green: #1fa855;--status-pale-green: #8fd9ae;--status-yellow: #d69e00;--editor-bg: #ffffff;--grid-dot: #d7dae2;--radius-lg: 16px;--radius-md: 10px;--shadow-float: 0 8px 24px rgba(20, 24, 38, .12), 0 1px 2px rgba(20, 24, 38, .06);--shadow-card: 0 2px 8px rgba(20, 24, 38, .07)}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){color-scheme:dark;--bg-app: #14161c;--bg-canvas: #1a1d24;--bg-surface: #1f2229;--bg-hover: #2a2e37;--border: #2e323c;--border-strong: #3a3f4b;--text: #e7e9ee;--text-muted: #9096a3;--accent: #6d87ff;--accent-soft: #232a4a;--danger: #ff5c85;--danger-soft-bg: #3a1826;--danger-soft-border: #5c2438;--danger-soft-text: #ff9db8;--status-green: #3ddb7f;--status-pale-green: #5fae82;--status-yellow: #e0b429;--editor-bg: #262a33;--grid-dot: #2a2e38}}:root[data-theme=dark]{color-scheme:dark;--bg-app: #14161c;--bg-canvas: #1a1d24;--bg-surface: #1f2229;--bg-hover: #2a2e37;--border: #2e323c;--border-strong: #3a3f4b;--text: #e7e9ee;--text-muted: #9096a3;--accent: #6d87ff;--accent-soft: #232a4a;--danger: #ff5c85;--danger-soft-bg: #3a1826;--danger-soft-border: #5c2438;--danger-soft-text: #ff9db8;--status-green: #3ddb7f;--status-pale-green: #5fae82;--status-yellow: #e0b429;--editor-bg: #262a33;--grid-dot: #2a2e38}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg-app);color:var(--text)}.gallery-header{display:flex;justify-content:space-between;gap:24px;align-items:center;padding:24px 32px;background:var(--bg-surface);border-bottom:1px solid var(--border)}.gallery-header h1{margin:0 0 4px;font-size:20px;font-weight:700}.gallery-header p{margin:0;color:var(--text-muted);font-size:14px}.gallery-actions{display:flex;gap:10px}.board-grid{padding:28px 32px;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px;min-height:200px;border-radius:var(--radius-lg);transition:.15s}.board-grid.drag{outline:2px dashed var(--accent);outline-offset:-8px;background:var(--accent-soft)}.empty-hint{grid-column:1/-1;color:var(--text-muted);text-align:center;padding:80px 0;font-size:15px}.board-card{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-card);transition:.15s}.board-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow-float)}.board-thumb{aspect-ratio:16/10;background:var(--bg-canvas);display:flex;align-items:center;justify-content:center;cursor:pointer;border-bottom:1px solid var(--border)}.board-thumb img{width:100%;height:100%;object-fit:contain;background:#fff}.board-thumb-placeholder{font-size:34px;color:var(--border-strong)}.board-meta{padding:12px 14px 6px;display:flex;flex-direction:column;gap:2px}.board-name{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.board-date{font-size:12px;color:var(--text-muted)}.board-actions{display:flex;gap:4px;padding:8px 10px 12px}.board-actions button{padding:7px 6px;font-size:13px}.board-actions button[data-action=open]{flex:1}.board-actions button:not([data-action=open]){flex:0 0 34px}button{border:1px solid var(--border-strong);background:var(--bg-surface);color:var(--text);border-radius:var(--radius-md);padding:8px 12px;cursor:pointer;font-size:14px;transition:.12s}button:hover{background:var(--bg-hover);border-color:var(--accent)}button.active{background:var(--accent);border-color:var(--accent);color:#fff}button:disabled{opacity:.4;cursor:default}button:disabled:hover{background:var(--bg-surface);border-color:var(--border-strong)}.gallery-actions button,.board-actions button{box-shadow:var(--shadow-card)}#newBoardBtn{background:var(--accent);border-color:var(--accent);color:#fff}#newBoardBtn:hover{filter:brightness(1.08)}.editor-view{height:100vh}.viewer{height:100vh;display:flex;flex-direction:column;overflow:hidden}.editor-body{flex:1;min-height:0;display:flex}.canvas-wrap{flex:1;min-height:0;position:relative;overflow:hidden;background-color:var(--bg-canvas);background-image:radial-gradient(var(--grid-dot) 1.1px,transparent 1.1px);background-size:22px 22px;cursor:grab;touch-action:none}.canvas-wrap.panning{cursor:grabbing}svg#graph{width:100%;height:100%;display:block}.float-topbar{position:absolute;top:16px;left:16px;display:flex;align-items:center;gap:10px;background:var(--bg-surface);border:1px solid var(--border);border-radius:999px;padding:6px 8px 6px 6px;box-shadow:var(--shadow-float);z-index:10}.float-topbar #backBtn{border-radius:999px}.board-name-input{background:transparent;border:1px solid transparent;color:var(--text);font-size:14px;font-weight:600;padding:6px 10px;border-radius:999px;min-width:120px;max-width:240px}.board-name-input:hover,.board-name-input:focus{border-color:var(--border-strong);background:var(--bg-app);outline:none}.float-topbar .stats{padding-right:8px}.float-toolbar-left{position:absolute;top:50%;left:16px;transform:translateY(-50%);display:flex;flex-direction:column;gap:4px;background:var(--bg-surface);border:1px solid var(--border);border-radius:999px;padding:8px 6px;box-shadow:var(--shadow-float);z-index:10}.float-toolbar-left button{border-radius:999px;width:38px;height:38px;padding:0;display:flex;align-items:center;justify-content:center}.sep-h{height:1px;background:var(--border);margin:4px 6px}.float-toolbar-bottom{position:absolute;bottom:16px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:6px;background:var(--bg-surface);border:1px solid var(--border);border-radius:999px;padding:6px;box-shadow:var(--shadow-float);z-index:10}.float-toolbar-bottom .sep-h{width:1px;height:22px;margin:0 4px}.float-toolbar-bottom button{border-radius:999px}.stats{color:var(--text-muted);font-size:13px;white-space:nowrap}.minimap{position:absolute;right:16px;bottom:16px;width:200px;height:140px;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-float);z-index:10;cursor:crosshair}.minimap-viewport{fill:#4262ff1f;stroke:var(--accent);stroke-width:6;vector-effect:non-scaling-stroke}.node text{-webkit-user-select:none;user-select:none;pointer-events:none}.edge-label{-webkit-user-select:none;user-select:none;cursor:move}.edge-label text{pointer-events:none}.node{cursor:move}.node.dragging{opacity:.88}.node.selected .node-shape{stroke:var(--accent);stroke-width:2.5;filter:drop-shadow(0 2px 6px rgba(66,98,255,.35))}.node.armed .node-shape{stroke:var(--accent);stroke-width:2.5;stroke-dasharray:5 4}.edge-preview{stroke:var(--accent);stroke-width:2;stroke-dasharray:6 4;pointer-events:none;marker-end:url(#edge-preview-arrow)}.edge.selected path{filter:drop-shadow(0 0 1px var(--accent))}.edge-hit{cursor:pointer}.edge-vertex{fill:var(--accent);stroke:var(--bg-surface);stroke-width:1.5;cursor:grab}.resize-handle{fill:var(--accent);stroke:var(--bg-surface);stroke-width:1.5}.resize-handle[data-dir=nw],.resize-handle[data-dir=se]{cursor:nwse-resize}.resize-handle[data-dir=ne],.resize-handle[data-dir=sw]{cursor:nesw-resize}.resize-handle[data-dir=n],.resize-handle[data-dir=s]{cursor:ns-resize}.resize-handle[data-dir=e],.resize-handle[data-dir=w]{cursor:ew-resize}.group-toggle{cursor:pointer}.group-toggle rect{fill:var(--bg-surface)}.edge-vertex:hover{r:7}.canvas-wrap.dragging-node{cursor:grabbing}.node:hover .node-shape{filter:drop-shadow(0 4px 10px rgba(15,23,42,.22))}.marquee{fill:#4262ff1a;stroke:var(--accent);stroke-width:1;stroke-dasharray:4 3;pointer-events:none}.label-editor{position:absolute;z-index:20;min-width:60px;max-width:260px;transform:translate(-50%,-50%);background:var(--editor-bg);color:var(--text);border:2px solid var(--accent);border-radius:6px;padding:2px 6px;font-size:12px;text-align:center;outline:none;box-shadow:var(--shadow-float);white-space:pre-wrap}.style-panel{position:absolute;top:16px;right:16px;bottom:16px;width:224px;z-index:10;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-float);padding:18px;overflow-y:auto}.style-panel h3{margin:0 0 14px;font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}.style-panel label{display:flex;flex-direction:column;gap:5px;margin-bottom:14px;font-size:12px;color:var(--text-muted)}.style-panel input,.style-panel select,.style-panel textarea{background:var(--bg-app);border:1px solid var(--border-strong);color:var(--text);border-radius:8px;padding:7px 9px;font-size:13px;font-family:inherit;resize:vertical}.style-panel input[type=color]{padding:2px;height:32px}.style-panel textarea#styleLabel{min-height:44px}.style-panel h4{margin:0 0 8px;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}.pool-lanes{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.text-toolbar{display:flex;align-items:center;gap:2px;margin-bottom:2px}.text-toolbar button{padding:3px 6px;font-size:12px;line-height:1;border-radius:6px}.text-toolbar .sep-v{width:1px;height:16px;background:var(--border);margin:0 3px}.emoji-picker{position:absolute;top:16px;right:250px;z-index:15;width:220px;max-height:260px;overflow-y:auto;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-float);padding:8px;display:grid;grid-template-columns:repeat(7,1fr);gap:2px}.emoji-picker button{padding:4px;font-size:17px;line-height:1;border:none;background:transparent;box-shadow:none}.emoji-picker button:hover{background:var(--bg-hover)}.stencil-picker{position:fixed;z-index:110;width:280px;max-height:70vh;overflow-y:auto;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-float);padding:10px}.stencil-group-label{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin:10px 2px 6px}.stencil-group-label:first-child{margin-top:0}.stencil-row{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}.stencil-item{position:relative;display:flex;align-items:center;gap:8px;padding:6px 8px;font-size:12px;text-align:left;border-radius:8px}.stencil-swatch{width:20px;height:20px;flex:none;border:1px solid var(--border-strong)}.stencil-item-delete{all:unset;position:absolute;right:4px;top:4px;font-size:10px;color:var(--text-muted);padding:2px 4px;cursor:pointer}.stencil-item-delete:hover{color:var(--danger)}.error{position:fixed;left:50%;bottom:20px;transform:translate(-50%);max-width:900px;z-index:50;padding:14px 16px;background:var(--danger-soft-bg);color:var(--danger-soft-text);border:1px solid var(--danger-soft-border);border-radius:var(--radius-md);box-shadow:var(--shadow-float)}.app-version{position:fixed;left:8px;bottom:6px;z-index:5;font-size:11px;color:var(--text-muted);opacity:.55;background:none;border:none;padding:0;cursor:pointer}.app-version:hover{opacity:.9}.version-dot{display:inline-block;width:6px;height:6px;margin-left:5px;border-radius:50%;background:var(--accent);vertical-align:middle}.changelog-panel{position:fixed;left:8px;bottom:26px;z-index:120;width:min(260px,calc(100vw - 16px));max-height:min(320px,60vh);overflow-y:auto;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-float);padding:10px 12px;font-size:12px;line-height:1.5;color:var(--text)}.changelog-panel h4{margin:6px 0 2px;font-size:12px}.changelog-panel h4:first-child{margin-top:0}.changelog-panel ul{margin:0 0 4px;padding-left:16px}.changelog-panel li{margin:2px 0}.theme-toggle-btn{position:fixed;right:56px;top:16px;z-index:5;width:32px;height:32px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:999px;box-shadow:var(--shadow-card);font-size:15px;line-height:1}.update-toast{position:fixed;left:50%;top:16px;transform:translate(-50%);z-index:120;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 12px;max-width:calc(100vw - 24px);box-sizing:border-box;background:var(--bg-surface);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow-float);padding:10px 12px;font-size:13px;color:var(--text);text-align:center}.update-toast-btn{background:var(--accent);color:#fff;border-color:var(--accent);border-radius:999px;padding:6px 14px;font-size:13px}.update-toast-btn:hover{filter:brightness(1.08)}.update-toast-btn:disabled{opacity:.6;cursor:default}.update-toast-dismiss{all:unset;cursor:pointer;color:var(--text-muted);padding:2px 6px;font-size:14px;line-height:1}.update-toast-dismiss:hover{color:var(--text)}.offline-warning-btn{position:absolute;top:16px;right:16px;z-index:11;width:32px;height:32px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:999px;background:var(--danger-soft-bg);border-color:var(--danger-soft-border);color:var(--danger-soft-text);box-shadow:var(--shadow-card);font-size:15px}.offline-warning-btn:hover{background:var(--danger-soft-bg);filter:brightness(1.06)}.offline-warning-panel{position:absolute;top:54px;right:16px;z-index:11;width:min(280px,calc(100vw - 32px));background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-float);padding:12px 14px;font-size:12px;line-height:1.5;color:var(--text)}.sw-status-wrap{position:relative;display:flex;align-items:center}.sw-status-btn{width:32px;height:32px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:50%;box-shadow:var(--shadow-card)}.sw-status-btn:before{content:"";width:11px;height:11px;border-radius:50%;background:var(--text-muted)}.sw-status-btn.state-green:before{background:var(--status-green)}.sw-status-btn.state-pale-green:before{background:var(--status-pale-green)}.sw-status-btn.state-yellow:before{background:var(--status-yellow)}.sw-status-btn.state-red:before{background:var(--danger)}.sw-status-panel{position:absolute;top:calc(100% + 8px);left:0;z-index:30;width:min(300px,calc(100vw - 32px));background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-float);padding:12px 14px;font-size:12px;line-height:1.5;color:var(--text)}.hidden{display:none!important}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f121c73;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal-card{background:var(--bg-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-float);padding:22px;width:min(360px,100%)}.modal-card h3{margin:0 0 8px;font-size:16px}.modal-card p{margin:0 0 14px;color:var(--text-muted);font-size:13px}.modal-input{width:100%;background:var(--bg-app);border:1px solid var(--border-strong);color:var(--text);border-radius:8px;padding:9px 10px;font-size:14px;margin-bottom:16px}.modal-actions{display:flex;justify-content:flex-end;gap:8px}.modal-confirm.danger{background:var(--danger);border-color:var(--danger);color:#fff}.modal-confirm.danger:hover{filter:brightness(1.08)}.context-menu{position:fixed;z-index:110;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-float);padding:6px;min-width:180px;display:flex;flex-direction:column;gap:2px}.context-menu-item{all:unset;box-sizing:border-box;display:block;width:100%;padding:8px 10px;border-radius:6px;font-size:13px;color:var(--text);cursor:pointer}.context-menu-item:hover{background:var(--bg-app)}.context-menu-item.danger{color:var(--danger)}.context-menu-item.danger:hover{background:var(--danger-soft-bg)}.context-menu-item:disabled{opacity:.4;cursor:default}.context-menu-item:disabled:hover{background:none}.context-menu-item.primary{background:var(--accent);color:#fff;text-align:center;margin-top:2px}.context-menu-item.primary:hover{filter:brightness(1.08)}.context-menu-sep{height:1px;background:var(--border);margin:4px 2px}.context-menu-shapes,.context-menu-swatches{display:flex;gap:4px;padding:4px 6px;flex-wrap:wrap}.shape-swatch{border:1px solid var(--border-strong);background:var(--bg-app);border-radius:6px;width:30px;height:30px;display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0;color:var(--text-muted)}.shape-swatch:hover{border-color:var(--accent);color:var(--text)}.shape-swatch.active{border-color:var(--accent);border-width:2px;background:var(--accent-soft);color:var(--accent)}.shape-swatch svg rect,.shape-swatch svg ellipse,.shape-swatch svg polygon{fill:none;stroke:currentColor;stroke-width:1.4}.swatch{width:22px;height:22px;border-radius:6px;border:1px solid var(--border-strong);cursor:pointer;padding:0}.swatch:hover{transform:scale(1.12);border-color:var(--accent)}.swatch.active{border-color:var(--accent);border-width:2px;box-shadow:0 0 0 2px var(--accent-soft)}@media (max-width:700px){.gallery-header{align-items:flex-start;flex-direction:column;padding:18px}.board-grid{padding:10px}.style-panel,.float-topbar .stats,.minimap{display:none}}