:root{--bg:#f5f8f6;--panel:#fff;--panel-soft:#edf3ef;--ink:#161917;--text:#3d4742;--muted:#68746e;--line:#d8e2dc;--line-strong:#b8c8bf;--accent:#0f8b7d;--accent-dark:#0a6259;--danger:#c83f35;--danger-soft:#fde9e5;--sun:#f2c94c;--coral:#e85d4f;--shadow:0 18px 48px #1619171f;--radius:8px;--sans:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;color:var(--text);background:var(--bg);font-family:var(--sans);letter-spacing:0;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px;line-height:1.5}*{box-sizing:border-box}body{min-width:320px;margin:0}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.7}a{color:inherit}h1,h2,h3,p{margin:0}h1,h2,h3{color:var(--ink);letter-spacing:0;font-weight:750;line-height:1.08}h1{font-size:2.6rem}h2{font-size:1.35rem}h3{font-size:1rem}#root{min-height:100svh}.route-loading{color:var(--ink);justify-content:center;align-items:center;min-height:100svh;font-weight:850;display:flex}.button,.icon-button{border:1px solid var(--line-strong);border-radius:var(--radius);justify-content:center;align-items:center;gap:.45rem;min-height:42px;padding:0 1rem;font-weight:700;text-decoration:none;transition:background .16s,border-color .16s,color .16s,transform 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var(--line-strong);border-radius:var(--radius);color:var(--ink);outline:none;width:100%;min-height:44px;padding:0 .85rem}.auth-form input:focus,.card-detail-form input:focus,.card-detail-form textarea:focus,.create-board input:focus,.inline-edit input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #0f8b7d29}.auth-switch{margin-top:1.25rem}.auth-switch a{color:var(--accent-dark);font-weight:800}.app-shell{grid-template-columns:72px minmax(0,1fr);min-height:100svh;display:grid}.sidebar{border-right:1px solid var(--line);background:#fff;flex-direction:column;align-items:center;gap:1rem;padding:.75rem .5rem;display:flex}.brand{justify-content:center;align-items:center;width:48px;height:48px;font-size:1.1rem;font-weight:850;text-decoration:none;display:flex}.brand-mark{width:44px;height:44px}.sidebar-label,.compact-user .eyebrow,.compact-user .user-name{white-space:nowrap;width:1px;height:1px;margin:-1px;position:absolute;overflow:hidden}.nav-list{justify-items:center;gap:.5rem;width:100%;display:grid}.nav-list a{border-radius:var(--radius);color:var(--text);justify-content:center;align-items:center;width:46px;height:46px;padding:0;font-weight:800;text-decoration:none;display:inline-flex}.nav-list a.active,.nav-list a:hover{background:var(--panel-soft);color:var(--ink)}.sidebar-rail-letter,.compact-user,.compact-logout{justify-content:center;align-items:center;display:inline-flex}.sidebar-rail-letter{font-weight:950}.sidebar-footer{border-top:1px solid var(--line);flex-direction:column;gap:.75rem;width:100%;margin-top:auto;padding-top:.75rem;display:flex}.compact-user{background:var(--panel-soft);border-radius:var(--radius);color:var(--ink);width:100%;height:42px;font-weight:900}.user-name{color:var(--ink);overflow-wrap:anywhere;font-weight:800}.compact-logout{width:100%;min-height:38px;padding:0}.compact-logout 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var(--line);border-radius:var(--radius);background-color:#edf3ef;background-image:linear-gradient(90deg,#10201d14 1px,#0000 1px),linear-gradient(0deg,#10201d14 1px,#0000 1px),none;background-position:0 0,0 0,0 0;background-repeat:repeat,repeat,repeat;background-size:28px 28px;background-attachment:scroll,scroll,scroll;background-origin:padding-box,padding-box,padding-box;background-clip:border-box,border-box,border-box;grid-template-columns:1fr .75fr;align-items:center;gap:.5rem;padding:1rem;text-decoration:none;display:grid}.board-preview span{background:var(--panel);border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:var(--radius);min-height:46px}.board-preview span:nth-child(2){border-left-color:var(--coral)}.board-preview span:nth-child(3){border-left-color:var(--sun);grid-column:1/-1}.board-card-title,.board-card-actions,.inline-edit{justify-content:space-between;align-items:center;gap:.65rem;display:flex}.board-card-title a{color:var(--ink);overflow-wrap:anywhere;font-size:1.05rem;font-weight:850;text-decoration:none}.inline-edit{align-items:stretch}.back-link{color:var(--accent-dark);margin-bottom:1rem;font-weight:850;text-decoration:none;display:inline-flex}.board-workspace{min-height:calc(100svh - 4rem);position:relative}.board-workspace-top{pointer-events:none;z-index:25;gap:1rem;display:grid;position:absolute;top:1rem;left:1rem;right:1rem}.nested-board-nav{color:#f1f1f1;pointer-events:auto;white-space:nowrap;background:0 0;border:0;border-radius:0;align-items:center;gap:.95rem;min-height:48px;padding:0;display:flex;overflow-x:auto}.board-workspace-top .form-error{pointer-events:auto}.home-crumb,.board-crumb,.breadcrumb-pair{align-items:center;gap:.65rem;display:inline-flex}.home-crumb,.board-crumb{color:#f0f0f0;text-shadow:0 2px 5px #00000080;font-weight:850;text-decoration:none}.home-crumb-icon{color:#282a2c;background:#f0f2f1;border-radius:50%;justify-content:center;align-items:center;width:26px;height:26px;font-size:.78rem;font-weight:950;display:inline-flex}.board-crumb-color{border-radius:5px;width:24px;height:24px;display:inline-flex}.breadcrumb-separator{color:#85888c;font-weight:900}.canvas-wrap{border-radius:var(--radius);background:#17191f;border:1px solid #2b2d35;height:calc(100svh - 4rem);min-height:620px;position:relative;overflow:hidden}.canvas-wrap .react-flow{height:100%;min-height:620px}.canvas-loading{border:1px solid var(--line);border-radius:var(--radius);color:var(--ink);z-index:6;background:#ffffffd1;padding:.65rem .85rem;font-weight:800;position:absolute;top:1rem;left:1rem}.card-node{--card-color:#ff1515;text-align:center;background:0 0;border:0;place-items:center;gap:.35rem;min-height:150px;padding:.2rem;display:grid;position:relative}.react-flow__node-card.selected .card-node{filter:none}.card-node-icon-tile{aspect-ratio:1;background:var(--card-color);color:#fff;border-radius:18px;justify-content:center;align-items:center;width:min(88px,72%);margin-bottom:.5rem;display:flex;box-shadow:0 16px 28px #00000047}.react-flow__node-card.selected .card-node-icon-tile{outline:2px solid var(--card-color);outline-offset:6px}.card-node-icon{color:currentColor;width:42px;height:42px;font-size:1.35rem;font-weight:900;line-height:42px;display:block}.card-node h3{color:#f6f6f7;overflow-wrap:anywhere;text-shadow:0 1px 4px #0000005c;max-width:100%;font-size:1rem;font-weight:850}.card-node p{color:#747780;text-shadow:0 1px 3px #0000003d;-webkit-line-clamp:2;-webkit-box-orient:vertical;font-weight:750;display:-webkit-box;overflow:hidden}.note-node{background:#303234;grid-template-rows:5px minmax(77px,1fr);width:100%;min-height:82px;display:grid;position:relative;overflow:visible;box-shadow:0 12px 24px #0000003d}.note-accent{background:var(--note-card-color,#4f6cff);pointer-events:none;z-index:2;width:100%;height:5px;position:relative}.react-flow__node-card.selected .note-node{outline-offset:4px;outline:2px solid #8b8f98}.note-format-toolbar{color:#f1f2f4;z-index:8;background:#2b2d30;border:1px solid #45484d;border-radius:6px;align-items:center;gap:.3rem;padding:.35rem;display:flex;position:absolute;bottom:calc(100% + 8px);left:0;box-shadow:0 12px 28px #00000057}.note-format-toolbar button,.note-format-select{color:#f1f2f4;background:#3b3e43;border:1px solid #565a61;border-radius:5px;justify-content:center;align-items:center;min-width:30px;height:30px;padding:0 .45rem;font-size:.78rem;font-weight:850;display:inline-flex}.note-format-toolbar button:hover,.note-format-select:hover{background:#4a4e54}.note-format-toolbar button[aria-pressed=true]{background:#5a616c;border-color:#8d95a3}.note-format-toolbar button:first-of-type{font-weight:950}.note-format-toolbar button:nth-of-type(2){font-style:italic}.note-format-select{min-width:64px}.note-color-control{color:#d8dadd;align-items:center;gap:.25rem;height:30px;font-size:.72rem;font-weight:800;display:inline-flex}.note-color-control input{background:0 0;border:0;width:28px;height:28px;padding:0}.note-editor{color:#eceef2;resize:none;white-space:pre-wrap;word-break:break-word;z-index:0;background:0 0;border:0;outline:none;width:100%;height:100%;min-height:77px;padding:24px 28px;line-height:1.4;display:block;position:relative;overflow:auto}.note-editor[data-empty=true]:before{color:#9a9da4;content:attr(data-placeholder);opacity:1;pointer-events:none}.note-editor ul,.note-editor ol{margin:0;padding-left:1.4rem}.note-editor b,.note-editor strong{font-weight:900}.note-editor i,.note-editor em{font-style:italic}.note-drag-handle{cursor:grab;z-index:1;width:18px;position:absolute;top:0;bottom:0;left:0}.note-drag-handle:hover,.react-flow__node-card.selected 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#fff;width:5px;height:9px;position:absolute;top:1px;left:5px;transform:rotate(45deg)}.todo-card-heading-input{color:#f4f5f7;background:0 0;border:0;outline:none;width:100%;min-width:0;padding:0;font-family:Georgia,Times New Roman,serif;font-size:1.28rem;font-weight:800;line-height:1.15}.todo-card-heading-input::placeholder{color:#f4f5f7;opacity:1}.todo-task-list{gap:12px;display:grid}.todo-task-row{grid-template-columns:18px minmax(0,1fr);align-items:center;gap:12px;min-height:25px;display:grid}.todo-task-input{color:#eceef2;font:inherit;background:0 0;border:0;outline:none;width:100%;min-width:0;padding:0;font-size:1rem;font-weight:650}.todo-task-input::placeholder{color:#9a9da4;opacity:1}.todo-card-checkbox:checked+.todo-task-input{color:#a5a8ae;text-decoration:line-through}.link-card-node{--card-color:#8b8f98;color:#a6a9b0;background:#303234;width:100%;min-height:82px;position:relative;box-shadow:0 12px 24px #0000003d}.link-card-accent{background:var(--card-color);pointer-events:none;height:5px;position:absolute;top:0;left:0;right:0}.link-card-editor{grid-template-columns:22px minmax(0,1fr);align-items:center;gap:14px;padding:0 28px;display:grid}.link-card-editor.has-link-message{grid-template-rows:auto auto;align-content:center;padding-top:.8rem;padding-bottom:.8rem}.link-card-preview{align-content:start;gap:12px;min-height:122px;padding:31px 27px 28px;display:grid}.react-flow__node-card.selected .link-card-node{outline:2px solid var(--card-color);outline-offset:4px}.link-card-icon{width:22px;height:22px;display:block}.link-card-fallback-icon{color:#a6a9b0;width:18px;height:18px;display:block}.link-card-input{color:#eceef2;font:inherit;background:0 0;border:0;outline:none;width:100%;min-width:0;padding:0;font-size:1rem;font-weight:650}.link-card-input::placeholder{color:#9a9da4;opacity:1}.link-card-input:disabled{opacity:.72}.link-card-status,.link-card-error{grid-column:2;margin:-.25rem 0 0;font-size:.78rem;font-weight:750}.link-card-status{color:#c4c8d0}.link-card-error{color:#ff8b80}.link-card-heading{align-items:center;gap:14px;min-width:0;display:flex}.link-card-favicon{background:#f4f6f8;border-radius:50%;flex:none;justify-content:center;align-items:center;width:20px;height:20px;display:inline-flex;overflow:hidden}.link-card-favicon img{object-fit:cover;width:100%;height:100%;display:block}.link-card-url{color:#f2f3f6;text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:1rem;font-weight:700;text-decoration:none;overflow:hidden}.link-card-url:hover{color:#fff}.link-card-title{color:#ff644f;overflow-wrap:anywhere;text-underline-offset:2px;font-size:1rem;font-weight:850;text-decoration:underline;text-decoration-thickness:1px}.link-card-title:hover{color:#ff806d}.column-card{text-align:left;background:#2f3133;align-content:start;justify-items:stretch;gap:0;width:100%;min-height:210px;padding:0;box-shadow:0 16px 28px #00000047}.column-card.is-drop-target{outline-offset:6px;outline:2px solid #f5d64d}.column-card.is-drop-target .column-stack{background:#f5d64d0d}.column-accent{background:var(--card-color);width:100%;height:5px}.column-header{text-align:center;justify-items:center;gap:.25rem;padding:1rem 1.25rem 1.25rem;display:grid}.column-header h3{color:#f5f5f5;font-family:Georgia,Times New Roman,serif;font-size:1.28rem;font-weight:800}.column-header p{color:#f5f5f5;text-shadow:none;font-size:.98rem;font-weight:650;display:block}.column-stack{background:0 0;gap:.7rem;min-height:108px;margin:0 .75rem .75rem;padding:.75rem;display:grid}.column-empty{color:#8f9399;text-align:center;min-height:108px;text-shadow:none;background:#242628;align-self:center;padding:2.2rem 1rem;font-weight:750;display:block}.column-child-card{touch-action:none;-webkit-user-select:none;user-select:none;width:100%}.column-child-card.is-selected{outline:2px solid var(--child-card-color,#f5d64d);outline-offset:2px}.column-child-card.is-dragging{opacity:.45}.column-board-row{color:#f5f5f5;text-align:left;background:#242628;border:0;border-radius:0;grid-template-columns:72px minmax(0,1fr);align-items:center;gap:1.15rem;min-height:92px;padding:1rem 1.75rem;display:grid}.column-board-row:hover{background:#282b2d}.column-board-row.is-selected{background:#2b2e31}.column-board-icon{aspect-ratio:1;color:#fff;border-radius:14px;justify-content:center;align-items:center;width:72px;display:flex}.column-board-glyph{width:34px;height:34px}.column-board-copy{min-width:0;display:grid}.column-board-copy strong{color:#f5f5f5;text-overflow:ellipsis;white-space:nowrap;font-size:1.08rem;overflow:hidden}.column-board-copy span{color:#f5f5f5;font-weight:650}.column-note-card{background:#303234;border:1px solid #45474b;min-height:82px;position:relative}.column-note-editor{color:#eceef2;white-space:pre-wrap;word-break:break-word;outline:none;width:100%;min-height:82px;padding:27px 28px;overflow:auto}.column-note-drag-handle{cursor:grab;z-index:1;width:18px;position:absolute;top:0;bottom:0;left:0}.column-note-drag-handle:hover,.column-note-card.is-selected .column-note-drag-handle{background:#ffffff14}.column-note-card.is-dragging .column-note-drag-handle{cursor:grabbing}.column-note-editor[data-empty=true]:before{color:#9a9da4;content:attr(data-placeholder);pointer-events:none}.column-note-editor ul,.column-note-editor ol{margin:0;padding-left:1.4rem}.column-link-card.link-card-node{box-shadow:none;min-height:122px}.column-link-card.link-card-editor{min-height:82px}.column-child-drag-ghost{color:#f5f5f5;pointer-events:none;z-index:60;background:#242628;border:1px solid #3c3f44;border-radius:0;grid-template-columns:72px minmax(0,1fr);align-items:center;gap:1rem;width:min(360px,100vw - 2rem);min-height:92px;padding:1rem 1.5rem;display:grid;position:fixed;transform:translate(-50%,-50%);box-shadow:0 18px 44px #0000006b}.column-child-drag-ghost .column-board-icon{border-radius:14px;width:72px}.column-child-drag-ghost .column-board-glyph{width:34px;height:34px}.board-pill{border-radius:var(--radius);color:#624e09;background:#fff4c7;border:1px solid #e1bf3f;padding:.25rem .45rem;font-size:.76rem;font-weight:850}.node-handle{background:var(--card-color);opacity:0;z-index:5;border:2px solid #fff;width:12px;height:12px;transition:opacity .14s}.card-node:hover .node-handle,.link-card-node:hover .node-handle,.note-node:hover .node-handle,.todo-card-node:hover .node-handle,.react-flow__node-card.selected .node-handle{opacity:1}.canvas-wrap .react-flow__controls{box-shadow:var(--shadow)}.canvas-wrap .react-flow__controls-button{color:#17191f;background:#fff;border-bottom-color:#d9dde5}.canvas-wrap .react-flow__minimap{background:#20232b;border:1px solid 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