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infinite}.save-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:8px;padding:12px 20px;background:#1f2937;color:#fff;border-radius:8px;font-size:14px;box-shadow:0 4px 20px #0000004d;animation:slideUp .3s ease-out;z-index:10000}.save-toast-icon{color:#10b981;font-size:16px}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes slideUp{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@media(prefers-color-scheme:dark){.save-status-indicator.saved{color:#34d399}.save-status-indicator.saving{color:#9ca3af}.save-status-indicator.unsaved{color:#fbbf24}}.stamp-save-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .15s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.stamp-save-dialog{background:var(--bg-primary, 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#f8f8f8);border-radius:8px}.stamp-save-field{margin-bottom:16px}.stamp-save-field:last-child{margin-bottom:0}.stamp-save-field label{display:block;font-size:13px;font-weight:500;color:var(--text-primary, #333);margin-bottom:6px}.stamp-save-field input,.stamp-save-field textarea{width:100%;padding:10px 12px;border:1px solid var(--border-color, #e0e0e0);border-radius:8px;font-size:14px;font-family:inherit;background:var(--bg-primary, #fff);color:var(--text-primary, #333);transition:border-color .15s,box-shadow .15s;box-sizing:border-box}.stamp-save-field input:focus,.stamp-save-field textarea:focus{outline:none;border-color:var(--accent-color, #007aff);box-shadow:0 0 0 3px #007aff26}.stamp-save-field textarea{resize:vertical;min-height:80px}.stamp-save-footer{display:flex;justify-content:flex-end;gap:10px;padding:16px 20px;border-top:1px solid var(--border-color, #e0e0e0);background:var(--bg-secondary, #f8f8f8)}.stamp-save-btn{padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all .15s ease;border:none}.stamp-save-btn.cancel{background:var(--bg-primary, #fff);color:var(--text-secondary, #666);border:1px solid var(--border-color, #e0e0e0)}.stamp-save-btn.cancel:hover{background:var(--bg-secondary, #f0f0f0)}.stamp-save-btn.save{background:var(--accent-color, #007aff);color:#fff}.stamp-save-btn.save:hover:not(:disabled){background:var(--accent-color-hover, #0066d6)}.stamp-save-btn.save:disabled{opacity:.5;cursor:not-allowed}@media(prefers-color-scheme:dark){.stamp-save-dialog{--bg-primary: #1e1e1e;--bg-secondary: #2a2a2a;--text-primary: #e0e0e0;--text-secondary: #a0a0a0;--border-color: #3a3a3a}}.compare-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;animation:compareFadeIn .15s ease-out}.compare-dialog{background:var(--bg-elevated);border-radius:12px;box-shadow:var(--shadow-lg);width:100%;max-width:480px;max-height:80vh;display:flex;flex-direction:column;animation:compareSlideUp .2s ease-out}.compare-fullscreen{position:fixed;top:48px;left:0;right:0;bottom:0;background:var(--bg-base);z-index:1100;display:flex;flex-direction:column}.compare-header,.compare-fullscreen-header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border-default);background:var(--bg-elevated);flex-shrink:0;gap:16px}.compare-controls-bar{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);flex-shrink:0;gap:16px}.compare-controls-left{display:flex;align-items:center;gap:16px}.compare-controls-right{display:flex;align-items:center;gap:12px}.compare-header-left{display:flex;align-items:center;gap:12px;flex-shrink:0}.change-badge{display:inline-flex;align-items:center;gap:4px;padding:4px 12px;background:var(--accent-primary);color:var(--text-inverse);border-radius:12px;font-size:12px;font-weight:600;white-space:nowrap}.compare-header-center{display:flex;align-items:center;flex:1;justify-content:center}.compare-header-right{display:flex;align-items:center;gap:12px;flex-shrink:0}.compare-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:600;color:var(--text-primary)}.compare-close{background:none;border:none;cursor:pointer;padding:8px;border-radius:6px;color:var(--text-secondary);transition:background .15s,color .15s}.compare-close:hover{background:var(--bg-surface);color:var(--text-primary)}.compare-content{flex:1;overflow-y:auto;padding:16px}.compare-item{padding:12px 16px;border:1px solid var(--border-default);border-radius:8px;margin-bottom:10px;cursor:pointer;transition:all .15s}.compare-item:hover{border-color:var(--accent-primary);background:var(--bg-surface)}.compare-item.selected{border-color:var(--accent-primary);background:var(--bg-surface-elevated);box-shadow:0 0 0 2px #3b82f633}.compare-item-title{font-weight:600;color:var(--text-primary);margin-bottom:4px}.compare-item-date{font-size:12px;color:var(--text-secondary)}.compare-item-memo{font-size:12px;color:var(--text-secondary);margin-top:6px;padding:6px 8px;background:var(--bg-surface);border-radius:4px}.compare-row-select{margin-bottom:16px}.compare-label{display:block;font-size:14px;font-weight:500;color:var(--text-secondary);margin-bottom:8px}.compare-select{width:100%;padding:10px 12px;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:8px;color:var(--text-primary);font-size:14px;cursor:pointer;transition:border-color .15s}.compare-select:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 2px #3b82f633}.stamp-save-selector{padding:4px 8px;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:4px;color:var(--text-primary);font-size:13px;cursor:pointer;margin-left:4px;max-width:200px}.stamp-save-selector:focus{border-color:var(--accent-primary);outline:none}.panel-label{margin-left:4px;font-weight:500}.panel-no-changes{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;min-height:200px;color:var(--text-secondary);gap:8px}.no-changes-icon{font-size:32px;color:var(--success-color, #22c55e)}.compare-footer,.compare-fullscreen-footer{display:flex;justify-content:flex-end;gap:10px;padding:16px 20px;border-top:1px solid var(--border-default);background:var(--bg-surface);flex-shrink:0}.compare-fullscreen-footer{justify-content:space-between}.compare-btn{padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all .15s ease;border:none}.compare-btn.cancel{background:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border-default)}.compare-btn.cancel:hover{background:var(--bg-surface)}.compare-btn.primary{background:var(--accent-primary);color:var(--text-inverse)}.compare-btn.primary:hover:not(:disabled){background:var(--accent-hover)}.compare-btn.primary:disabled{opacity:.5;cursor:not-allowed}.compare-main{flex:1;display:flex;flex-direction:column;padding:16px;gap:12px;overflow:hidden;min-height:0}.diff-scene-info{display:flex;align-items:center;gap:16px;padding:10px 16px;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:8px;font-size:13px;color:var(--text-primary);flex-shrink:0}.diff-scene-info .scene-label{font-weight:600;display:flex;align-items:center;gap:6px}.diff-scene-info .item-label{color:var(--text-secondary);display:flex;align-items:center;gap:6px}.diff-scene-info .change-counter{margin-left:auto;padding:4px 12px;background:var(--accent-primary);color:var(--text-inverse);border-radius:12px;font-size:12px;font-weight:600}.diff-panels{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:16px;min-height:0}.diff-panel{display:flex;flex-direction:column;border:1px solid var(--border-default);border-radius:8px;overflow:hidden;min-height:0}.diff-panel-header{display:flex;align-items:center;gap:8px;padding:12px 16px;font-size:14px;font-weight:600;flex-shrink:0}.diff-panel-header.old{background:#f8717126;color:#dc2626;border-bottom:2px solid #dc2626}.diff-panel-header.new{background:#4ade8026;color:#16a34a;border-bottom:2px solid #16a34a}.diff-panel-header .panel-icon{font-size:16px}.diff-panel-content{flex:1;padding:16px;background:var(--bg-elevated);color:var(--text-primary);font-size:14px;line-height:1.8;white-space:pre-wrap;overflow:auto}.diff-added{background-color:#4ade8066;color:#166534;padding:1px 4px;border-radius:3px;border-bottom:2px solid #16a34a}.diff-removed{background-color:#f8717166;color:#991b1b;padding:1px 4px;border-radius:3px;text-decoration:line-through;text-decoration-thickness:2px}[data-theme=dark] .diff-added{background-color:#4ade8040;color:#86efac}[data-theme=dark] .diff-removed{background-color:#f8717140;color:#fca5a5}[data-theme=dark] .diff-panel-header.old{background:#f871711a;color:#f87171;border-bottom-color:#f87171}[data-theme=dark] .diff-panel-header.new{background:#4ade801a;color:#4ade80;border-bottom-color:#4ade80}.compare-nav{display:flex;gap:8px}.compare-nav button{display:flex;align-items:center;gap:4px;padding:6px 12px;border:1px solid var(--border-default);border-radius:6px;background:var(--bg-elevated);color:var(--text-primary);cursor:pointer;transition:all .15s;font-size:13px}.compare-nav button:hover:not(:disabled){background:var(--bg-surface);border-color:var(--accent-primary)}.compare-nav button:disabled{opacity:.5;cursor:not-allowed}.nav-counter{display:flex;align-items:center;justify-content:center;min-width:70px;padding:6px 14px;background:var(--accent-primary);color:var(--text-inverse);border-radius:6px;font-size:13px;font-weight:600;white-space:nowrap}.compare-fullscreen-header .compare-info{display:flex;align-items:center;gap:16px}.compare-fullscreen-header .compare-title-text{font-size:14px;font-weight:500;color:var(--text-primary)}@keyframes compareFadeIn{0%{opacity:0}to{opacity:1}}@keyframes compareSlideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.compare-content .compare-empty,.compare-content .compare-error{text-align:center;padding:40px 20px;color:var(--text-secondary)}.compare-content .compare-error{color:var(--error)}.compare-loading{display:flex;align-items:center;justify-content:center;padding:40px;color:var(--text-secondary)}.compare-empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-secondary);font-size:16px}.compare-empty-state:before{content:"✓";font-size:48px;color:var(--success, #16a34a)}.compare-summary{font-size:13px;color:var(--text-secondary);display:flex;align-items:center;gap:12px}.compare-summary .stat{display:flex;align-items:center;gap:4px}.compare-summary .stat.added{color:#16a34a}.compare-summary .stat.removed{color:#dc2626}.diff-panel.editing{border-color:var(--accent-primary);box-shadow:0 0 0 2px #3b82f64d}.diff-panel-header.editing{background:#3b82f626;color:var(--accent-primary);border-bottom-color:var(--accent-primary)}.edit-toggle-btn{display:flex;align-items:center;gap:4px;margin-left:auto;padding:4px 10px;font-size:12px;font-weight:500;background:var(--bg-surface);border:1px solid var(--border-default);border-radius:4px;cursor:pointer;transition:all .15s}.edit-toggle-btn:hover,.edit-toggle-btn.active{background:var(--accent-primary);color:var(--text-inverse);border-color:var(--accent-primary)}.diff-panel-content.editing{padding:0;display:flex;flex-direction:column}.diff-editor{flex:1;min-height:300px;border:none!important;border-radius:0!important}.diff-editor>div{height:100%}.diff-edit-textarea{width:100%;height:100%;min-height:300px;padding:16px;border:none;background:var(--bg-elevated);color:var(--text-primary);font-size:14px;line-height:1.8;font-family:inherit;resize:none;outline:none}.diff-edit-textarea:focus{box-shadow:inset 0 0 0 2px var(--accent-primary)}.compare-btn.restore{display:flex;align-items:center;gap:6px;background:#f8717126;color:#dc2626;border:1px solid #dc2626}.compare-btn.restore:hover{background:#f871714d}.compare-btn.save{display:flex;align-items:center;gap:6px;background:var(--accent-primary);color:var(--text-inverse)}.compare-btn.save:hover{background:var(--accent-hover)}.compare-btn.save:disabled{opacity:.5;cursor:not-allowed}.whitespace-toggle{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none}.whitespace-toggle input[type=checkbox]{width:16px;height:16px;accent-color:var(--accent-primary);cursor:pointer}.whitespace-toggle:hover{color:var(--text-primary)}.confirm-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1200;animation:compareFadeIn .15s ease-out}.confirm-modal{background:var(--bg-elevated);border-radius:12px;box-shadow:var(--shadow-lg);width:100%;max-width:400px;animation:compareSlideUp .2s ease-out}.confirm-modal-header{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--border-default)}.confirm-modal-header .warning-icon{font-size:24px}.confirm-modal-header h3{margin:0;font-size:16px;font-weight:600;color:var(--text-primary)}.confirm-modal-body{padding:20px;color:var(--text-secondary);font-size:14px;line-height:1.6}.confirm-modal-footer{display:flex;justify-content:flex-end;gap:10px;padding:16px 20px;border-top:1px solid var(--border-default);background:var(--bg-surface);border-radius:0 0 12px 12px}.shortcut-hint{font-size:11px;color:var(--text-tertiary);margin-left:4px;opacity:.8}.compare-fullscreen-footer{display:flex;justify-content:space-between;align-items:center}.compare-footer-left{display:flex;align-items:center;gap:16px}.compare-footer-right{display:flex;align-items:center;gap:10px}.diff-added{background-color:var(--diff-added-bg);border-bottom:2px solid var(--diff-added-border);padding:1px 2px;border-radius:2px;color:inherit}.diff-removed{background-color:var(--diff-removed-bg);text-decoration:line-through;text-decoration-color:var(--diff-removed-border);text-decoration-thickness:2px;padding:1px 2px;border-radius:2px;color:inherit}.diff-panel-content.scrollable{overflow-y:auto;flex:1;padding:8px}.scene-row{background:var(--bg-elevated);border-radius:8px;margin-bottom:12px;border:1px solid var(--border-subtle);overflow:hidden}.scene-row.has-changes{border-left:3px solid var(--warning)}.scene-row-header{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);font-size:13px;font-weight:500}.scene-number{color:var(--accent-primary);font-weight:600}.scene-title{color:var(--text-primary)}.change-indicator{color:var(--warning);margin-left:auto}.no-change-indicator{color:var(--success);margin-left:auto}.scene-row-content{padding:12px;min-height:80px;white-space:pre-wrap;line-height:1.6;color:var(--text-primary);display:flex;flex-direction:column}.scene-row-content.editable{padding:0}.scene-row-content .diff-editor{min-height:80px;border:none;flex:1}.no-changes-message{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--success);font-size:14px;padding:16px;min-height:48px;flex:1}.no-changes-message .no-changes-icon{font-size:18px}.compare-editor-row{margin-bottom:0;display:flex;flex-direction:column}.compare-editor-content{padding:0;display:flex;flex-direction:column}.compare-editor{flex:1;min-height:60px;font-size:14px;line-height:1.8;color:var(--text-primary);cursor:text}.compare-editor:focus{outline:2px solid var(--accent);outline-offset:-2px}.compare-resize-handle{height:8px;cursor:row-resize;background:transparent;transition:background .2s;border-radius:0 0 4px 4px}.compare-resize-handle:hover{background:var(--accent);opacity:.5}.compare-resize-handle:active{background:var(--accent);opacity:.8}.compare-layout{display:flex;flex-direction:column;height:100%;min-height:0}.compare-headers{display:flex;flex-shrink:0;border-bottom:1px solid var(--border-default)}.compare-header-cell{flex:1;padding:12px 16px;font-weight:600;font-size:14px;display:flex;align-items:center;gap:8px}.compare-header-cell.old{background:#f8717126;color:#dc2626;border-right:1px solid var(--border-default)}.compare-header-cell.new{background:#4ade8026;color:#16a34a}.compare-content-area{flex:1;overflow:auto;min-height:0}.compare-row{display:flex;align-items:stretch;border-bottom:1px solid var(--border-subtle);position:relative}.compare-row.vertical{writing-mode:vertical-rl}.compare-cell{flex:1;min-width:0;display:flex;flex-direction:column}.compare-cell.left{border-right:1px solid var(--border-default);background:var(--bg-elevated)}.compare-cell.right{background:var(--bg-surface)}.compare-cell-header{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);font-size:13px;flex-shrink:0}.compare-cell.left .compare-cell-header{background:#f8717114}.compare-cell.right .compare-cell-header{background:#4ade8014}.compare-cell-content{flex:1;padding:12px;font-size:14px;line-height:1.8;white-space:pre-wrap;word-break:break-all;min-height:60px}.compare-row-resize{position:absolute;bottom:0;left:0;right:0;height:6px;cursor:row-resize;background:transparent;transition:background .2s;z-index:5}.compare-row-resize:hover{background:var(--accent-primary);opacity:.5}.compare-row-resize:active{background:var(--accent-primary);opacity:.8}.compare-cell-header .scene-info{display:flex;align-items:center;gap:6px}.compare-cell-header .scene-number{color:var(--text-secondary);font-weight:500}.compare-cell-header .scene-title{color:var(--text-primary);font-weight:500}.compare-cell-header .change-indicator{color:#f59e0b;font-size:12px}.compare-cell-header .no-change-indicator{color:#22c55e;font-size:12px}[data-theme=dark] .compare-header-cell.old{background:#f871711a;color:#f87171}[data-theme=dark] .compare-header-cell.new{background:#4ade801a;color:#4ade80}[data-theme=dark] .compare-cell.left .compare-cell-header{background:#f871710d}[data-theme=dark] .compare-cell.right .compare-cell-header{background:#4ade800d}.compare-writing-toggle{display:flex;border:1px solid var(--border-default);border-radius:6px;overflow:hidden;margin-left:12px}.compare-writing-toggle button{padding:4px 12px;border:none;background:transparent;cursor:pointer;font-size:12px;color:var(--text-secondary);transition:all .15s ease}.compare-writing-toggle button:hover{background:var(--bg-elevated)}.compare-writing-toggle button.active{background:var(--accent-primary);color:#fff}.compare-main.vertical-mode{flex:1;overflow:auto;padding:16px}.compare-vertical-layout{display:flex;flex-direction:column;gap:16px;height:100%}.compare-vertical-row{display:flex;align-items:stretch;gap:8px;padding:12px;border-radius:8px;flex:1;min-height:250px}.compare-vertical-row.past{background:#f8717114;border:1px solid rgba(248,113,113,.2)}.compare-vertical-row.current{background:#4ade8014;border:1px solid rgba(74,222,128,.2)}.compare-vertical-label{writing-mode:vertical-rl;font-size:14px;font-weight:600;padding:12px 8px;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:4px;color:var(--text-secondary);width:70px;flex-shrink:0;background:var(--bg-elevated);border-radius:8px}.stamp-save-selector-vertical{writing-mode:vertical-rl;text-orientation:mixed;font-size:12px;padding:8px 6px;border:1px solid var(--border-default);border-radius:4px;background:var(--bg-surface);cursor:pointer;min-height:60px}.label-divider{width:100%;height:1px;background:var(--border-subtle);margin:4px 0}.label-spacer{min-height:60px}.compare-vertical-row.past .compare-vertical-label{color:#f87171}.compare-vertical-row.current 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