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.button-editor-mode span:first-child{display:inline-flex;align-items:center;justify-content:center}.button-save{background:linear-gradient(135deg,var(--accent-primary) 0%,#2563EB 100%);color:#fff;border:none;box-shadow:0 2px 8px #2563eb33,0 1px 4px #2563eb26}.button-save:hover:not(:disabled){background:linear-gradient(135deg,#2563eb,#1d4ed8);transform:translateY(-2px);box-shadow:0 4px 12px #2563eb4d,0 2px 6px #2563eb33}.button-save:active:not(:disabled){transform:translateY(0);box-shadow:0 1px 4px #2563eb33,0 .5px 2px #2563eb26}.button-save:disabled{background:var(--bg-tertiary);color:var(--text-disabled);cursor:not-allowed;transform:none;box-shadow:none}.button-active,.canvas-toolbar .button-editor-mode.button-active{background:linear-gradient(135deg,var(--accent-primary) 0%,#2563EB 100%)!important;color:#fff!important;border-color:var(--accent-primary)!important;box-shadow:0 2px 8px #2563eb33,0 1px 4px #2563eb26!important}.button-active:hover:not(:disabled),.canvas-toolbar .button-editor-mode.button-active:hover:not(:disabled){background:linear-gradient(135deg,#2563eb,#1d4ed8)!important;border-color:#1d4ed8!important;transform:translateY(-1px);box-shadow:0 4px 12px #2563eb4d,0 2px 6px #2563eb33!important}.canvas-toolbar .button-editor-mode:disabled{opacity:.5;cursor:not-allowed;transform:none}.save-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#000000b3;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:2000;pointer-events:none}.save-progress-container{background:var(--bg-elevated);border:1px solid var(--border-primary);border-radius:16px;padding:32px;box-shadow:0 20px 40px #0000004d,0 8px 16px #0003;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);min-width:320px;text-align:center}.save-progress-header{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:24px}.save-icon{font-size:24px;animation:saveSpin 1s linear infinite}.save-title{font-size:18px;font-weight:600;color:var(--text-primary);letter-spacing:-.01em}.save-progress-bar{width:100%;height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden;margin-bottom:16px}.save-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary) 0%,#2563EB 100%);border-radius:4px;transition:width .3s ease;position:relative}.save-progress-fill:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.3) 50%,transparent 100%);animation:progressShimmer 1.5s ease-in-out infinite}.save-progress-text{font-size:14px;font-weight:500;color:var(--text-secondary);font-family:-apple-system,BlinkMacSystemFont,SF Mono,Menlo,Monaco,Consolas,monospace}.save-indicator{display:flex;align-items:center;gap:8px}.save-spinner{animation:saveSpin 1s linear infinite}.save-text{font-size:12px}@keyframes saveSpin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes progressShimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.zoom-controls{display:flex;align-items:center;gap:2px;margin-left:auto;padding:4px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:var(--radius-md);box-shadow:var(--shadow-xs)}.zoom-controls .button{padding:6px 10px;min-width:36px;font-size:14px;border-radius:var(--radius-sm);background:transparent;color:var(--text-primary);box-shadow:none}.zoom-controls .button:hover{background:var(--bg-secondary);transform:none}.zoom-controls .button:active{background:var(--bg-tertiary)}.zoom-level{min-width:56px;text-align:center;font-size:13px;font-weight:600;color:var(--text-secondary);-webkit-user-select:none;user-select:none;padding:0 var(--space-sm);letter-spacing:-.02em}.canvas-status{font-size:13px;font-weight:500;color:var(--text-secondary);padding:var(--space-sm) var(--space);background:var(--bg-tertiary);border-radius:var(--radius-sm);border:1px solid var(--border-primary);letter-spacing:-.01em}.mindmap-canvas{flex:1;cursor:grab;touch-action:none;background:radial-gradient(circle at 20% 20%,rgba(37,99,235,.02) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(16,163,74,.02) 0%,transparent 50%);transition:cursor .1s;-webkit-user-select:none;user-select:none}.mindmap-canvas.panning,.mindmap-canvas.panning *{cursor:grabbing!important}.mindmap-canvas:active{cursor:grabbing}.canvas-background{cursor:grab}.canvas-background:active,.panning .canvas-background{cursor:grabbing}.empty-canvas{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;color:var(--text-secondary);pointer-events:none;animation:fadeIn .6s ease-out}.empty-canvas p{font-size:17px;font-weight:500;letter-spacing:-.01em;margin-bottom:var(--space-sm);color:var(--text-primary)}.empty-canvas p:last-child{font-size:15px;color:var(--text-tertiary);font-weight:400}.mindmap-canvas defs pattern path{stroke:var(--border-primary);stroke-width:.5}.toolbar-help{position:relative;z-index:1000;display:inline-flex}.help-summary{cursor:pointer;font-size:12px;font-weight:500;color:var(--text-secondary);padding:4px 8px;background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:var(--radius-sm);transition:var(--transition-fast);-webkit-user-select:none;user-select:none;list-style:none;display:flex;align-items:center;gap:4px}.help-summary::-webkit-details-marker{display:none}.help-summary:hover{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--border-secondary);transform:translateY(-1px);box-shadow:var(--shadow-xs)}.help-summary:active{transform:translateY(0)}.help-content{position:absolute;bottom:calc(100% + 12px);right:0;min-width:400px;max-width:500px;max-height:60vh;overflow-y:auto;background:var(--bg-elevated);backdrop-filter:blur(40px) saturate(180%);-webkit-backdrop-filter:blur(40px) saturate(180%);border:1px solid var(--border-primary);border-radius:var(--radius-lg);box-shadow:0 20px 60px #0000001f,0 8px 20px #00000014,0 0 0 1px #0000000a;padding:var(--space-lg);margin-bottom:8px;opacity:0;transform:translateY(10px);transition:all .3s cubic-bezier(.4,0,.2,1);pointer-events:none;z-index:10000}.toolbar-help details[open] .help-content{opacity:1;transform:translateY(0);pointer-events:all}.help-section-title{margin:0 0 var(--space-sm) 0;font-size:14px;font-weight:600;color:var(--text-primary);letter-spacing:-.01em;padding-bottom:var(--space-xs);border-bottom:1px solid var(--border-primary)}.help-section-title:not(:first-child){margin-top:var(--space-md)}.help-list{margin:0;padding-left:20px;font-size:13px;line-height:1.8;color:var(--text-secondary)}.help-list li{margin-bottom:var(--space-xs)}.help-list strong{color:var(--text-primary);font-weight:600}.help-content::-webkit-scrollbar{width:8px}.help-content::-webkit-scrollbar-track{background:transparent;border-radius:var(--radius-full)}.help-content::-webkit-scrollbar-thumb{background:var(--border-secondary);border-radius:var(--radius-full);border:2px solid transparent;background-clip:padding-box;transition:var(--transition-fast)}.help-content::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary);background-clip:padding-box}.help-content:before{content:"";position:absolute;bottom:-8px;right:20px;width:0;height:0;border-left:8px solid transparent;border-right:8px solid transparent;border-top:8px solid var(--border-primary)}.help-content:after{content:"";position:absolute;bottom:-7px;right:21px;width:0;height:0;border-left:7px solid transparent;border-right:7px solid transparent;border-top:7px solid var(--bg-elevated)}@media (max-width: 768px){.help-content{min-width:300px;max-width:90vw;right:-10px}.help-summary{font-size:12px;padding:6px 10px}}.history-progress-container{background:var(--bg-elevated);border:1px solid var(--border-primary);border-radius:12px;padding:24px;box-shadow:0 8px 24px #0000001a,0 2px 8px #0000000d;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);min-width:320px;max-width:480px;margin:0 auto}.history-progress-header{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:20px}.history-progress-icon{font-size:20px;animation:historyProgressSpin 2s linear infinite}.history-progress-title{font-size:16px;font-weight:600;color:var(--text-primary);letter-spacing:-.01em}.history-progress-bar{width:100%;height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden;margin-bottom:16px;position:relative}.history-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary) 0%,#2563EB 100%);border-radius:4px;transition:width .4s cubic-bezier(.4,0,.2,1);position:relative}.history-progress-fill:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.4) 50%,transparent 100%);animation:historyProgressShimmer 2s ease-in-out infinite}.history-progress-info{display:flex;flex-direction:column;align-items:center;gap:8px}.history-progress-percentage{font-size:14px;font-weight:600;color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,SF Mono,Menlo,Monaco,Consolas,monospace}.history-progress-stats{font-size:12px;color:var(--text-secondary);font-weight:500}.history-progress-message{font-size:11px;color:var(--text-tertiary);text-align:center;font-style:italic;max-width:100%;word-wrap:break-word}@keyframes historyProgressSpin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes historyProgressShimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}@media (prefers-color-scheme: dark){.history-progress-container{background:#ffffff0d;border-color:#ffffff1a;box-shadow:0 8px 24px #0000004d,0 2px 8px #0003}.history-progress-bar{background:#ffffff1a}.history-progress-fill:after{background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.2) 50%,transparent 100%)}}@media (max-width: 480px){.history-progress-container{margin:0 16px;padding:20px}.history-progress-title{font-size:14px}.history-progress-percentage{font-size:13px}}.version-history-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.version-history-dialog{background:var(--bg-elevated);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);max-width:600px;width:90%;max-height:80vh;display:flex;flex-direction:column;border:1px solid var(--border-primary)}.version-history-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-lg);border-bottom:1px solid var(--border-primary);background:var(--bg-primary);border-radius:var(--radius-lg) var(--radius-lg) 0 0}.version-history-header h3{margin:0;font-size:18px;font-weight:600;color:var(--text-primary)}.close-button{background:none;border:none;font-size:18px;color:var(--text-secondary);cursor:pointer;padding:4px;border-radius:var(--radius-sm);transition:all .2s ease}.close-button:hover{background:var(--bg-secondary);color:var(--text-primary)}.version-history-content{flex:1;overflow-y:auto;padding:var(--space-md)}.version-list{display:flex;flex-direction:column;gap:var(--space-sm)}.version-item{background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:var(--radius-md);padding:var(--space-md);cursor:pointer;transition:all .2s ease;position:relative}.version-item:hover{background:var(--bg-secondary);border-color:var(--border-secondary);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.version-item.current{border-color:var(--accent-primary);background:#2563eb0d}.version-item.selected{border-color:var(--semantic-success);background:#10a34a0d}.version-header{display:flex;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-xs)}.version-number{font-weight:600;font-size:16px;color:var(--accent-primary)}.current-badge{background:var(--accent-primary);color:#fff;padding:2px 6px;border-radius:var(--radius-sm);font-size:11px;font-weight:500}.latest-badge{background:var(--semantic-success);color:#fff;padding:2px 6px;border-radius:var(--radius-sm);font-size:11px;font-weight:500}.commit-sha{font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:12px;color:var(--text-tertiary);background:var(--bg-tertiary);padding:2px 4px;border-radius:var(--radius-xs)}.version-message{font-size:14px;color:var(--text-primary);margin-bottom:var(--space-xs);line-height:1.4}.version-meta{display:flex;align-items:center;gap:var(--space-sm);font-size:12px;color:var(--text-secondary)}.version-meta .author{font-weight:500}.version-meta .date{color:var(--text-tertiary)}.version-meta .stats{margin-left:auto;background:var(--bg-tertiary);padding:2px 6px;border-radius:var(--radius-xs)}.loading,.error,.no-versions{text-align:center;padding:var(--space-xl);color:var(--text-secondary)}.error{color:var(--semantic-error)}.version-history-footer{display:flex;gap:var(--space-sm);justify-content:flex-end;padding:var(--space-lg);border-top:1px solid var(--border-primary);background:var(--bg-primary);border-radius:0 0 var(--radius-lg) var(--radius-lg)}.version-history-footer .button{padding:var(--space-sm) var(--space-lg);font-size:14px;font-weight:500}.version-history-footer 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h2{margin:0;font-size:24px;font-weight:600;color:#333}.modal-close{background:none;border:none;font-size:32px;color:#999;cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:all .2s}.modal-close:hover{background:#f0f0f0;color:#333}.modal-body{padding:24px}.modal-loading{padding:40px;text-align:center;color:#666}.share-link-section{margin-bottom:24px}.share-link-section label{display:block;margin-bottom:8px;font-weight:500;color:#333;font-size:14px}.share-link-input-group{display:flex;gap:8px}.share-link-input{flex:1;padding:10px 12px;border:1px solid #ddd;border-radius:6px;font-size:14px;font-family:monospace;background:#f9f9f9}.share-link-hint{margin:8px 0 0;font-size:12px;color:#666}.btn-copy{padding:10px 20px;background:#007bff;color:#fff;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:background 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0 0 3px #007bff1a}.btn-clear-expiration{margin-left:8px;padding:6px 10px;background:#f0f0f0;border:1px solid #ddd;border-radius:4px;cursor:pointer;font-size:14px;color:#666;transition:all .2s}.btn-clear-expiration:hover{background:#e0e0e0;border-color:#bbb;color:#333}.form-hint{margin:4px 0 0;font-size:12px;color:#666;font-style:italic}.password-input-wrapper{position:relative}.password-input-wrapper input{width:100%;padding:10px 48px 10px 12px;border:1px solid #ddd;border-radius:6px;font-size:14px;box-sizing:border-box}.password-input-wrapper input:focus{outline:none;border-color:#007bff;box-shadow:0 0 0 3px #007bff1a}.password-input-wrapper .btn-toggle-password{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:none;font-size:18px;cursor:pointer;padding:4px;opacity:.6;transition:opacity .2s}.password-input-wrapper .btn-toggle-password:hover{opacity:1}.badge-active{display:inline-block;margin-left:8px;padding:2px 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saturate(180%);box-shadow:var(--shadow-sm)}.editor-header-left{display:flex;align-items:center;gap:var(--space-md);flex:1;min-width:0}.editor-header-right{display:flex;align-items:center;gap:var(--space-md)}.breadcrumb-separator{color:var(--text-tertiary);font-weight:300;font-size:18px;margin:0 var(--space-xs)}.breadcrumb{display:flex;align-items:center;gap:var(--space-sm);font-size:14px;color:var(--text-secondary);overflow:hidden;flex:1;min-width:0}.breadcrumb-user{font-weight:500;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px;letter-spacing:-.01em}.breadcrumb-arrow{color:var(--text-tertiary);font-size:16px;flex-shrink:0}.breadcrumb-title{font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0;letter-spacing:-.01em}@media (max-width: 768px){.editor-header{flex-direction:column;gap:var(--space);padding:var(--space) 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