:root{--bg-primary: #ffffff;--bg-header: #fafafa;--bg-hover: #f0f0f0;--bg-selected: #e8f0fe;--bg-input: #ffffff;--text-primary: #1a1a1a;--text-secondary: #666666;--text-completed: #999999;--border-color: #e0e0e0;--accent-color: #4a90d9;--accent-hover: #357abd;--danger-color: #d94a4a;--gantt-bar: #4a90d9;--gantt-bar-alt: #6ab04c;--gantt-bar-3: #e67e22;--gantt-bar-4: #9b59b6;--gantt-bar-5: #1abc9c;--indent-size: 24px;--tree-item-height: 32px}@media(prefers-color-scheme:dark){:root{--bg-primary: #1a1a1a;--bg-header: #242424;--bg-hover: #2a2a2a;--bg-selected: #1e3a5f;--bg-input: #2a2a2a;--text-primary: #e0e0e0;--text-secondary: #999999;--text-completed: #666666;--border-color: #333333;--accent-color: #5ba0e8;--accent-hover: #4a90d9}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;font-size:14px;color:var(--text-primary);background:var(--bg-primary);line-height:1.5}#root{height:100vh;overflow:hidden}.inline-input{border:none;outline:none;background:transparent;font:inherit;color:inherit;width:100%;padding:2px 4px;border-radius:2px}.inline-input:focus{background:var(--bg-input);box-shadow:0 0 0 1px var(--accent-color)}.task-completed .inline-input,.task-completed .task-name{text-decoration:line-through;color:var(--text-completed);opacity:.6}.completion-toggle{display:flex;align-items:center;justify-content:center;width:18px;height:18px;border:2px solid var(--border-color);border-radius:50%;cursor:pointer;flex-shrink:0;background:transparent;padding:0;transition:all .15s ease}.completion-toggle:hover{border-color:var(--accent-color)}.completion-toggle.checked{background:var(--accent-color);border-color:var(--accent-color)}.completion-toggle.checked:after{content:"✓";color:#fff;font-size:11px;font-weight:700}.panel-header{font-size:13px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;padding-bottom:6px;border-bottom:1px solid var(--border-color)}.empty-state{display:flex;align-items:center;justify-content:center;padding:32px 16px;color:var(--text-secondary);font-size:13px;text-align:center}.date-group-header{font-size:12px;font-weight:600;color:var(--text-secondary);padding:8px 4px 4px;margin-top:8px}.date-group-header:first-child{margin-top:0}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}.task-row{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:4px;cursor:pointer;transition:background .1s}.task-row:hover{background:var(--bg-hover)}.task-row-content{flex:1;display:flex;flex-direction:column;min-width:0}.task-row-project{font-size:11px;color:var(--text-secondary);margin-top:1px}.task-completed-text{text-decoration:line-through;color:var(--text-completed);opacity:.6}.task-list{display:flex;flex-direction:column;gap:2px}.today-columns{display:flex;gap:12px}.today-column{flex:1;min-width:0}.detail-panel{display:flex;flex-direction:column;gap:16px}.detail-header{display:flex;align-items:center;gap:8px;padding-bottom:12px;border-bottom:1px solid var(--border-color)}.detail-close-btn{margin-left:auto;border:none;background:none;cursor:pointer;color:var(--text-secondary);font-size:18px;line-height:1;padding:2px 6px;border-radius:4px}.detail-close-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.detail-status{font-size:13px;color:var(--text-secondary)}.detail-field{display:flex;flex-direction:column;gap:4px}.detail-label{font-size:12px;font-weight:600;color:var(--text-secondary)}.detail-input{border:1px solid var(--border-color);border-radius:4px;padding:6px 8px;font:inherit;font-size:13px;color:var(--text-primary);background:var(--bg-input);outline:none}.detail-input:focus{border-color:var(--accent-color);box-shadow:0 0 0 1px var(--accent-color)}.detail-textarea{border:1px solid var(--border-color);border-radius:4px;padding:6px 8px;font:inherit;font-size:13px;color:var(--text-primary);background:var(--bg-input);outline:none;resize:vertical;min-height:80px;line-height:1.5}.detail-textarea:focus{border-color:var(--accent-color);box-shadow:0 0 0 1px var(--accent-color)}.detail-checkbox-row{flex-direction:row;gap:16px}.detail-checkbox-label{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-primary);cursor:pointer}.detail-checkbox-label input[type=checkbox]{width:16px;height:16px;cursor:pointer;accent-color:var(--accent-color)}.detail-divider{height:1px;background:var(--border-color);margin:4px 0}.share-panel{display:flex;flex-direction:column;gap:6px}.share-user{display:flex;align-items:center;gap:8px;padding:4px 8px;border-radius:4px;font-size:13px}.share-user:hover{background:var(--bg-hover)}.share-user-name{flex:1;color:var(--text-primary)}.share-user-role{font-size:11px;color:var(--text-secondary);padding:1px 6px;border-radius:3px;background:var(--bg-hover)}.share-owner .share-user-role{color:var(--accent-color)}.share-remove-btn{border:none;background:none;color:var(--text-secondary);cursor:pointer;font-size:16px;line-height:1;padding:0 4px;border-radius:2px}.share-remove-btn:hover{color:var(--danger-color);background:var(--bg-hover)}.share-add{display:flex;gap:6px;margin-top:4px}.share-add-input{flex:1;min-width:0}.share-add-btn{padding:6px 12px;border:none;border-radius:4px;background:var(--accent-color);color:#fff;font-size:13px;cursor:pointer;white-space:nowrap}.share-add-btn:hover{background:var(--accent-hover)}.share-error{font-size:12px;color:var(--danger-color);padding:2px 0}.activity-panel{display:flex;flex-direction:column;gap:6px}.activity-empty{font-size:12px;color:var(--text-secondary);padding:4px 0}.activity-list{display:flex;flex-direction:column;gap:2px;max-height:200px;overflow-y:auto}.activity-entry{display:flex;justify-content:space-between;align-items:baseline;gap:8px;padding:3px 8px;border-radius:3px;font-size:12px}.activity-entry:hover{background:var(--bg-hover)}.activity-text{flex:1;color:var(--text-primary);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.activity-time{flex-shrink:0;color:var(--text-secondary);font-size:11px}.cp-backdrop{position:fixed;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:1000}.cp-modal{width:360px;padding:32px;border:1px solid var(--border-color);border-radius:8px;background:var(--bg-header)}.cp-btns{display:flex;gap:8px;margin-top:4px}.cp-btns .login-btn{flex:1}.cp-cancel-btn{flex:1;padding:10px;border:1px solid var(--border-color);border-radius:4px;font:inherit;font-size:14px;font-weight:600;cursor:pointer;color:var(--text-primary);background:var(--bg-primary);transition:background .15s}.cp-cancel-btn:hover{background:var(--bg-hover)}.app-layout{display:flex;flex-direction:column;height:100vh;overflow:hidden}.app-header{display:flex;align-items:center;gap:12px;padding:8px 16px;border-bottom:1px solid var(--border-color);background:var(--bg-header);flex-shrink:0}.gantt-toggle-btn{background:none;border:1px solid var(--border-color);border-radius:4px;padding:4px 8px;cursor:pointer;font-size:16px;color:var(--text-primary);line-height:1}.gantt-toggle-btn:hover{background:var(--bg-hover)}.app-title{font-size:16px;font-weight:600;margin:0;color:var(--text-primary)}.header-spacer{flex:1}.header-user{font-size:13px;color:var(--text-secondary)}.header-user-btn{font-size:13px;color:var(--text-secondary);background:none;border:none;cursor:pointer;padding:2px 6px;border-radius:4px;font:inherit}.header-user-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.header-logout-btn{background:none;border:1px solid var(--border-color);border-radius:4px;padding:4px 8px;cursor:pointer;font-size:12px;color:var(--text-secondary);line-height:1}.header-logout-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.app-main{display:grid;grid-template-columns:280px 1fr;flex:1;overflow:hidden}.panel-tree{border-right:1px solid var(--border-color);overflow-y:auto;padding:8px}.panel-center{display:flex;flex-direction:column;overflow:hidden}.panel-today{flex:1;border-bottom:1px solid var(--border-color);overflow-y:auto;padding:12px}.panel-week{flex:1;overflow-y:auto;padding:12px}.gantt-overlay{flex:1;overflow:auto;padding:16px}.tree-view{min-height:100%;display:flex;flex-direction:column}.tree-toolbar{display:flex;align-items:center;gap:8px;padding:4px 8px;margin-bottom:4px}.tree-search{flex:1;min-width:0;padding:4px 8px;font-size:12px;border:1px solid var(--border-color, #ddd);border-radius:4px;outline:none;background:var(--bg-input, #fff);color:inherit}.tree-search:focus{border-color:var(--accent-color, #4a90d9)}.tree-toggle-completed{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none}.tree-toggle-completed input[type=checkbox]{margin:0;cursor:pointer}.tree-item{display:flex;align-items:center;gap:4px;height:var(--tree-item-height);padding-right:4px;border-radius:4px;transition:background .1s}.tree-item:hover{background:var(--bg-hover)}.tree-item-project>.inline-input{font-weight:600;font-size:14px}.tree-item-task>.inline-input{font-size:13px}.tree-item-drag-handle{cursor:grab;color:var(--text-secondary);opacity:0;font-size:12px;padding:0 2px;-webkit-user-select:none;user-select:none;flex-shrink:0}.tree-item:hover .tree-item-drag-handle{opacity:.5}.tree-item-drag-handle:active{cursor:grabbing}.tree-item-toggle{display:flex;align-items:center;justify-content:center;width:16px;height:16px;border:none;background:none;cursor:pointer;color:var(--text-secondary);font-size:8px;padding:0;flex-shrink:0;border-radius:2px}.tree-item-toggle:hover{background:var(--bg-hover);color:var(--text-primary)}.tree-item-toggle-spacer{width:16px;flex-shrink:0}.tree-empty{display:flex;align-items:center;justify-content:center;flex:1;color:var(--text-secondary);cursor:pointer;font-size:13px;min-height:200px}.tree-empty:hover{background:var(--bg-hover);border-radius:8px}.tree-add-area{display:flex;align-items:center;justify-content:center;padding:8px;color:var(--text-secondary);cursor:pointer;font-size:18px;border-radius:4px;margin-top:4px}.tree-add-area:hover{background:var(--bg-hover)}.detail-drawer{position:fixed;top:0;right:0;bottom:0;z-index:10;background:var(--bg-primary);box-shadow:-2px 0 8px #00000026;display:flex}.detail-drawer-resize{width:5px;cursor:col-resize;flex-shrink:0;background:transparent;transition:background .15s}.detail-drawer-resize:hover{background:var(--accent-color)}.detail-drawer-content{flex:1;overflow-y:auto;padding:16px}.gantt-container{display:flex;flex-direction:column;height:100%;position:relative}.gantt-toolbar{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--border-color);margin-bottom:12px;flex-shrink:0}.gantt-title{font-size:16px;font-weight:600;margin:0}.gantt-close-btn{background:none;border:1px solid var(--border-color);border-radius:4px;padding:4px 12px;cursor:pointer;color:var(--text-primary);font-size:13px}.gantt-close-btn:hover{background:var(--bg-hover)}.gantt-scroll{flex:1;overflow:auto}.gantt-grid{min-width:100%;position:relative}.gantt-header-row{display:flex;border-bottom:2px solid var(--border-color);position:sticky;top:0;background:var(--bg-primary);z-index:2}.gantt-month-row{border-bottom:1px solid var(--border-color);z-index:3}.gantt-month-row+.gantt-header-row{top:28px}.gantt-month-cell{font-size:12px;font-weight:600;color:var(--text-secondary);text-align:center;padding:4px 0;border-right:1px solid var(--border-color);white-space:nowrap;overflow:hidden}.gantt-label-col{width:200px;min-width:200px;padding:6px 8px;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border-right:1px solid var(--border-color)}.gantt-dates-row{display:flex}.gantt-date-cell{display:flex;flex-direction:column;align-items:center;padding:4px 0;border-right:1px solid var(--border-color);font-size:11px;cursor:default}.gantt-date-today{background:var(--accent-color);color:#fff;border-radius:4px}.gantt-date-today .gantt-date-day,.gantt-date-today .gantt-date-weekday{color:#fff}.gantt-date-day{font-weight:600;color:var(--text-primary)}.gantt-date-weekday{color:var(--text-secondary);font-size:10px}.gantt-today-line{position:absolute;top:0;bottom:0;width:2px;background:var(--accent-color);opacity:.5;z-index:1;pointer-events:none}.gantt-group{margin-bottom:4px}.gantt-group-header{font-size:13px;font-weight:600;padding:8px 8px 4px;color:var(--text-secondary);border-bottom:1px solid var(--border-color)}.gantt-row{display:flex;align-items:center;height:32px;border-bottom:1px solid var(--border-color);cursor:pointer}.gantt-row:hover{background:var(--bg-hover)}.gantt-bar-area{flex:1;position:relative;height:100%}.gantt-grid-lines{display:flex;height:100%;position:absolute;top:0;left:0}.gantt-grid-line{height:100%;border-right:1px solid var(--border-color);opacity:.3}.gantt-grid-line-today{background:var(--accent-color);opacity:.06}.gantt-bar{position:absolute;top:6px;height:20px;border-radius:3px;opacity:.85;transition:opacity .15s}.gantt-bar:hover{opacity:1}.gantt-bar-completed{opacity:.4}.quadrant-container{display:flex;flex-direction:column;height:100%}.quadrant-toolbar{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;border-bottom:1px solid var(--border-color);margin-bottom:12px;flex-shrink:0}.quadrant-title{font-size:16px;font-weight:600;margin:0}.quadrant-close-btn{background:none;border:1px solid var(--border-color);border-radius:4px;padding:4px 12px;cursor:pointer;color:var(--text-primary);font-size:13px}.quadrant-close-btn:hover{background:var(--bg-hover)}.quadrant-grid{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:12px;flex:1;overflow:hidden}.quadrant-cell{display:flex;flex-direction:column;border:1px solid var(--border-color);border-radius:8px;overflow:hidden}.quadrant-cell-header{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;font-size:13px;font-weight:600;flex-shrink:0}.quadrant-cell-title{display:flex;flex-direction:column}.quadrant-cell-sub{font-size:11px;font-weight:400;color:var(--text-secondary)}.quadrant-cell-count{font-size:12px;font-weight:400;color:var(--text-secondary)}.quadrant-cell.do-first .quadrant-cell-header{background:#fee2e2;color:#991b1b}.quadrant-cell.schedule .quadrant-cell-header{background:#dbeafe;color:#1e40af}.quadrant-cell.delegate .quadrant-cell-header{background:#fef3c7;color:#92400e}.quadrant-cell.eliminate .quadrant-cell-header{background:#f3f4f6;color:#374151}@media(prefers-color-scheme:dark){.quadrant-cell.do-first .quadrant-cell-header{background:#450a0a;color:#fca5a5}.quadrant-cell.schedule .quadrant-cell-header{background:#172554;color:#93c5fd}.quadrant-cell.delegate .quadrant-cell-header{background:#451a03;color:#fcd34d}.quadrant-cell.eliminate .quadrant-cell-header{background:#1f2937;color:#9ca3af}}.quadrant-cell-list{flex:1;overflow-y:auto;padding:4px}.quadrant-task-item{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:4px;cursor:pointer;font-size:13px;transition:background .1s}.quadrant-task-item:hover{background:var(--bg-hover)}.quadrant-task-name{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.quadrant-empty{display:flex;align-items:center;justify-content:center;height:100%;color:var(--text-secondary);font-size:12px}.login-page{display:flex;align-items:center;justify-content:center;height:100vh;background:var(--bg-primary)}.login-card{width:360px;padding:32px;border:1px solid var(--border-color);border-radius:8px;background:var(--bg-header)}.login-title{font-size:20px;font-weight:600;margin-bottom:24px;text-align:center;color:var(--text-primary)}.login-form{display:flex;flex-direction:column;gap:16px}.login-field{display:flex;flex-direction:column;gap:4px}.login-label{font-size:13px;font-weight:500;color:var(--text-secondary)}.login-input{border:1px solid var(--border-color);border-radius:4px;padding:8px 12px;font:inherit;font-size:14px;color:var(--text-primary);background:var(--bg-input);outline:none}.login-input:focus{border-color:var(--accent-color);box-shadow:0 0 0 1px var(--accent-color)}.login-btn{padding:10px;border:none;border-radius:4px;font:inherit;font-size:14px;font-weight:600;cursor:pointer;color:#fff;background:var(--accent-color);transition:background .15s}.login-btn:hover{background:var(--accent-hover)}.login-btn:disabled{opacity:.6;cursor:not-allowed}.login-error{color:var(--danger-color);font-size:13px;text-align:center}.login-switch{text-align:center;font-size:13px;color:var(--text-secondary);margin-top:4px}.login-switch-link{color:var(--accent-color);cursor:pointer;border:none;background:none;font:inherit;font-size:13px;text-decoration:underline}.login-switch-link:hover{color:var(--accent-hover)}