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var(--border-2);border-radius:4px;width:240px;min-height:32px;overflow:hidden}.board-mode-controls{flex-shrink:0;align-items:center;gap:12px;display:flex}.layout-toggle{border:1px solid var(--border);border-radius:6px;display:inline-flex;overflow:hidden}.layout-toggle button{color:var(--text-2);cursor:pointer;background:0 0;border:none;padding:5px 10px;font-size:12px}.layout-toggle button+button{border-left:1px solid var(--border)}.layout-toggle button:hover:not(.active){background:var(--border-2);color:var(--text)}.layout-toggle button.active{background:rgba(var(--color-blue-rgb), .15);color:var(--color-blue)}.settings-sidebar{box-sizing:border-box;z-index:20;background:var(--bg-2);border-left:1px solid var(--border);flex-direction:column;align-items:stretch;width:280px;height:100vh;padding:10px 12px;display:flex;position:fixed;top:0;right:0;overflow-y:auto;box-shadow:-4px 0 16px #0006}.settings-sidebar.collapsed{width:auto;height:auto;box-shadow:none;background:0 0;border:none;padding:0;top:12px;right:12px}.settings-sidebar-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.settings-toggle{color:var(--text-2);border-radius:6px;padding:8px 10px;font-size:20px}.settings-toggle:hover{background:rgba(var(--color-blue-rgb), .08)}.board-toggle{color:var(--text-2);cursor:pointer;align-items:center;gap:6px;margin-bottom:6px;font-size:12px;display:flex}.settings-divider{background:var(--border);height:1px;margin:8px 0}.settings-file-actions{flex-direction:column;gap:6px;display:flex}.settings-file-actions button{text-align:left;padding:5px 8px;font-size:12px}.settings-hint{color:var(--text-3);margin-top:8px;font-size:11px}.settings-label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-3);margin-bottom:6px;font-size:11px}.latex-headers-input{box-sizing:border-box;background:var(--bg);border:1px solid var(--border);width:100%;min-height:70px;color:inherit;resize:vertical;border-radius:4px;padding:6px;font-family:SF Mono,Monaco,monospace;font-size:12px}.board-scroll{border:1px solid var(--border);border-radius:8px;padding:4px;overflow:auto}.board-canvas{position:relative}.board-col-bg{box-sizing:border-box;border:2px solid #0000}.board-col-bg.active{background:rgba(var(--color-blue-rgb), .05);border-color:rgba(var(--color-blue-rgb), .5)}.board-col-head{background:var(--bg-2);border-bottom:1px solid var(--border);color:var(--text-2);cursor:pointer;box-sizing:border-box;align-items:center;gap:2px;padding:6px 4px;font-weight:600;display:flex}.board-col-head.active{color:var(--color-blue)}.col-head-name{text-overflow:ellipsis;white-space:nowrap;text-align:center;flex:1;min-width:0;overflow:hidden}.col-head-clone{opacity:0;color:var(--color-blue);background:0 0;border:none;flex-shrink:0;padding:2px 4px;font-size:15px;font-weight:700}.board-col-head:hover .col-head-clone{opacity:1}.col-head-clone:hover{background:rgba(var(--color-blue-rgb), .2);color:var(--color-blue)}.col-head-rename-btn{opacity:0;color:var(--text-2);background:0 0;border:none;flex-shrink:0;padding:2px 5px;font-size:12px}.board-col-head:hover .col-head-rename-btn{opacity:1}.col-head-rename-btn:hover{background:var(--border-2);color:var(--text)}.col-head-delete{opacity:0;color:var(--color-red);background:0 0;border:none;flex-shrink:0;padding:2px 6px;font-size:13px}.board-col-head:hover .col-head-delete{opacity:1}.col-head-delete:hover:not(:disabled){background:rgba(var(--color-red-rgb), .25)}.col-head-delete:disabled{color:var(--text-4);cursor:default}.col-head-rename{width:100%;font:inherit;background:var(--bg);border:1px solid var(--color-blue);color:inherit;border-radius:4px;padding:2px 4px;font-weight:600}.board-cell{box-sizing:border-box;align-items:center;gap:4px;height:100%;padding:0 12px;display:flex}.cell-display{cursor:text;background-image:linear-gradient(to right, var(--rel-left,transparent) 0%, transparent var(--fade-reach), transparent calc(100% - var(--fade-reach)), var(--rel-right,transparent) 100%)}.rel-left-modified{--rel-left:rgba(var(--color-orange-rgb), .28)}.rel-left-inserted{--rel-left:rgba(var(--color-green-rgb), .28)}.rel-left-deleted{--rel-left:rgba(var(--color-red-rgb), .28)}.rel-right-modified{--rel-right:rgba(var(--color-orange-rgb), .28)}.rel-right-inserted{--rel-right:rgba(var(--color-green-rgb), .28)}.rel-right-deleted{--rel-right:rgba(var(--color-red-rgb), .28)}.cell-ghost.ghost-deleted{background-image:repeating-linear-gradient(45deg, rgba(var(--color-red-rgb), .22), rgba(var(--color-red-rgb), .22) 6px, rgba(var(--color-red-rgb), .1) 6px, rgba(var(--color-red-rgb), .1) 12px);-webkit-mask-image:linear-gradient(to right, black 0%, transparent calc(var(--fade-reach) * 2));-webkit-mask-image:linear-gradient(to right, black 0%, transparent calc(var(--fade-reach) * 2));mask-image:linear-gradient(to right, black 0%, transparent calc(var(--fade-reach) * 2));background-position:0;background-repeat:no-repeat;background-size:50% 100%;-webkit-mask-position:0;mask-position:0;-webkit-mask-size:50% 100%;mask-size:50% 100%;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat}.cell-ghost.ghost-inserted{background-image:repeating-linear-gradient(45deg, rgba(var(--color-green-rgb), .22), rgba(var(--color-green-rgb), .22) 6px, rgba(var(--color-green-rgb), .1) 6px, rgba(var(--color-green-rgb), .1) 12px);-webkit-mask-image:linear-gradient(to left, black 0%, transparent calc(var(--fade-reach) * 2));-webkit-mask-image:linear-gradient(to left, black 0%, transparent calc(var(--fade-reach) * 2));mask-image:linear-gradient(to left, black 0%, transparent calc(var(--fade-reach) * 2));background-position:100%;background-repeat:no-repeat;background-size:50% 100%;-webkit-mask-position:100%;mask-position:100%;-webkit-mask-size:50% 100%;mask-size:50% 100%;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat}.cell-text{flex:1;min-width:0}.cell-content{display:inline-block}.delete-btn-hover{opacity:0;flex-shrink:0}.cell-display:hover .delete-btn-hover{opacity:1}.katex-cell{font-size:15px}.cell-highlighted{background:#7fd0ff1f}.cell-drag-affected{outline:1.5px dashed var(--color-yellow);outline-offset:-1.5px}.cell-display .drag-handle{visibility:hidden}.cell-display:hover .drag-handle{visibility:visible}.cell-text{white-space:nowrap;text-overflow:ellipsis;font-family:SF Mono,Monaco,monospace;font-size:13px;overflow:hidden}.cell-empty{color:var(--text-4);font-style:italic}.comment{color:var(--text-2);font-family:-apple-system,Segoe UI,Roboto,sans-serif}.cell-input{background:var(--bg);border:1px solid var(--border);min-width:0;color:inherit;border-radius:4px;flex:1;padding:4px 6px;font-family:SF Mono,Monaco,monospace;font-size:13px}.cell-input:focus{outline:1px solid var(--color-blue)}.delete-btn{color:var(--color-red);flex-shrink:0;padding:2px 6px;font-size:12px;line-height:1}.delete-btn:disabled{color:var(--text-4);cursor:default}.drag-handle{cursor:grab;color:var(--text-3);flex-shrink:0}.wire-line-linked{stroke:var(--color-green)}.wire-line-same{stroke:var(--color-yellow)}.wire-line-diff{stroke:var(--color-orange)}.wire-chip{width:18px;height:18px;color:var(--text-2);cursor:pointer;pointer-events:auto;background:0 0;border:none;border-radius:50%;padding:0;font-size:11px;line-height:1}.wire-chip-linked{opacity:0}.wire-chip-linked:hover{opacity:1;background:rgba(var(--color-green-rgb), .25)}.wire-chip-same{border:1.5px solid var(--color-yellow);color:var(--color-yellow);background:var(--bg)}.wire-chip-diff{opacity:0}.wire-chip-diff:hover{opacity:1;background:rgba(var(--color-orange-rgb), .25)}.wire-chip-extend{color:var(--color-cyan);background:var(--bg)}.wire-chip-extend-active{border:1px solid rgba(var(--color-cyan-rgb), .5)}.wire-chip-extend:hover{background:rgba(var(--color-cyan-rgb), .3)}.hybrid-notes{box-sizing:border-box;resize:none;border:none;border-top:1px solid var(--border-2);background:var(--bg-2);color:var(--text-2);font:inherit;padding:6px 8px;font-size:12px}.hybrid-notes:focus{outline:1px solid var(--color-blue);color:var(--text)}.hop-notes{border-top:1px solid rgba(var(--color-yellow-rgb), .4);background:var(--bg-2)}.drop-indicator{background:var(--color-blue);pointer-events:none;box-shadow:0 0 4px rgba(var(--color-blue-rgb), .8)}.dialog-backdrop{z-index:10;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.dialog{background:var(--bg-2);border:1px solid var(--border);border-radius:8px;width:480px;max-width:90vw;padding:20px}.dialog h3{margin:0 0 4px}.dialog-sub{color:var(--text-2);margin:0 0 16px;font-size:13px}.dialog-section{margin-bottom:16px}.dialog-label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-3);margin-bottom:6px;font-size:12px}.dialog-option{border:1px solid var(--border);cursor:pointer;border-radius:6px;align-items:baseline;gap:8px;margin-bottom:6px;padding:8px;display:flex}.dialog-option.selected{border-color:var(--color-blue);background:rgba(var(--color-blue-rgb), .15)}.dialog-option-title{flex-shrink:0;font-weight:600}.dialog-option-code{color:var(--text);font-family:SF Mono,Monaco,monospace;font-size:12px}.dialog-option-desc{color:var(--text-2);font-size:12px}.dialog-actions{justify-content:flex-end;gap:8px;display:flex}.dialog-actions .primary{background:var(--color-blue)}