.loading-spinner-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:9999}.loading-spinner-content{display:flex;flex-direction:column;align-items:center;gap:16px;padding:32px 48px;background:var(--bg-secondary, #1e293b);border-radius:16px;box-shadow:0 24px 64px #0006}.loading-spinner-icon{color:var(--accent-primary, #10b981);animation:spin 1s linear infinite}.loading-spinner-text{font-size:16px;font-weight:500;color:var(--text-primary, #f4f4f5)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.deferred-loading-indicator{position:fixed;bottom:24px;right:24px;min-width:200px;max-width:280px;background:var(--bg-secondary, #1e293b);border:1px solid var(--border-default, #27332c);border-radius:12px;box-shadow:0 8px 32px #0000004d;padding:12px 16px;z-index:1000}.deferred-loading-header{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-primary, #f4f4f5);margin-bottom:8px;padding-bottom:8px;border-bottom:1px solid var(--border-default, #27332c)}.deferred-loading-spinner{color:var(--accent-primary, #10b981);animation:spin 1s linear infinite}.deferred-loading-list{list-style:none;margin:0;padding:0;max-height:150px;overflow-y:auto}.deferred-loading-item{display:flex;align-items:center;gap:8px;padding:4px 0;font-size:12px;color:var(--text-secondary, #a1a1aa)}.deferred-item-spinner{color:var(--text-muted, #71717a);animation:spin 1.5s linear infinite}�� � �.auth-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background-color:var(--bg-secondary, #f3f4f6)}.auth-card{background:var(--bg-primary, white);padding:2.5rem;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;width:100%;max-width:400px}.auth-card h1{font-size:1.5rem;font-weight:600;margin-bottom:.5rem;text-align:center;color:var(--text-primary, #111827)}.auth-subtitle{text-align:center;color:var(--text-secondary, #6b7280);margin-bottom:2rem;font-size:.875rem}.form-group{margin-bottom:1.25rem}.form-group label{display:block;margin-bottom:.5rem;font-size:.875rem;font-weight:500;color:var(--text-primary, #374151)}.form-group input{width:100%;padding:.625rem .875rem;border:1px solid var(--border-color, #d1d5db);border-radius:6px;font-size:.875rem;outline:none;transition:border-color .15s;background:var(--bg-tertiary, white);color:var(--text-primary, black)}.form-group input:focus{border-color:var(--accent-color, #10b981);box-shadow:0 0 0 3px #10b9811a}.auth-btn{width:100%;padding:.75rem;background-color:var(--accent-color, #10b981);color:#fff;border:none;border-radius:6px;font-weight:500;font-size:.875rem;cursor:pointer;transition:background-color .15s}.auth-btn:hover{background-color:var(--accent-hover, #059669)}.auth-btn:disabled{opacity:.7;cursor:not-allowed}.auth-footer{margin-top:1.5rem;text-align:center;font-size:.875rem;color:var(--text-secondary, #6b7280)}.auth-footer a{color:var(--accent-color, #10b981);font-weight:500;text-decoration:none}.auth-footer a:hover{text-decoration:underline}.auth-error{background-color:#fee2e2;color:#ef4444;padding:.75rem;border-radius:6px;margin-bottom:1.5rem;font-size:.875rem;text-align:center}:root{--mode: dark;--bg-primary: #0a0f0d;--bg-secondary: #121a16;--bg-tertiary: #1a241e;--bg-hover: #222e28;--bg-selected: #2a3a32;--accent-primary: #10b981;--accent-secondary: #059669;--accent-light: #34d399;--accent-success: #22c55e;--accent-warning: #f59e0b;--accent-error: #ef4444;--text-primary: #f4f4f5;--text-secondary: #a1a1aa;--text-muted: #71717a;--text-disabled: #52525b;--border-default: #27332c;--border-hover: #3f4f46;--border-focus: #10b981;--cell-height: 34px;--cell-min-width: 140px;--header-bg: #18201c;--header-border: #27332c;--row-number-width: 50px;--selection-bg: rgba(16, 185, 129, .15);--selection-border: #10b981;--font-mono: "SF Mono", "Cascadia Code", "Consolas", monospace;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 24px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .5);--transition-fast: .1s ease;--transition-normal: .2s ease}[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f8faf9;--bg-tertiary: #f0f4f2;--bg-hover: #e8ece9;--bg-selected: #d0e8dc;--accent-primary: #059669;--accent-secondary: #047857;--accent-light: #10b981;--text-primary: #1a1a1a;--text-secondary: #52525b;--text-muted: #71717a;--text-disabled: #a1a1aa;--border-default: #d4d9d6;--border-hover: #b0b8b3;--border-focus: #059669;--header-bg: #f0f4f2;--header-border: #d4d9d6;--selection-bg: rgba(5, 150, 105, .12);--selection-border: #059669;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .08);--shadow-md: 0 4px 6px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .15)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:var(--font-sans);font-size:14px;line-height:1.5;color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.spreadsheet-container{user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-hover);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.app-layout{display:flex;height:100vh;width:100vw;overflow:hidden}.app-loading{display:flex;align-items:center;justify-content:center;height:100vh;width:100vw;background:var(--bg-primary);color:var(--text-secondary);font-size:16px}.app-container{display:flex;flex-direction:column;flex:1;min-width:0;background:var(--bg-primary)}.app-container:focus{outline:none}.main-area{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden}.app-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-lg);background:var(--bg-secondary);border-bottom:1px solid var(--border-default);min-height:48px}.app-logo{display:flex;align-items:center;gap:var(--spacing-sm);font-weight:600;font-size:18px;color:var(--text-primary)}.app-logo svg{width:28px;height:28px}.app-title{font-weight:600;font-size:16px;color:var(--text-primary)}.toolbar{display:flex;align-items:center;gap:var(--spacing-sm)}.toolbar-button{display:flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-default);border-radius:var(--radius-sm);color:var(--text-secondary);font-size:13px;cursor:pointer;transition:all var(--transition-fast)}.toolbar-button:hover{background:var(--bg-hover);border-color:var(--border-hover);color:var(--text-primary)}.toolbar-button.primary{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.toolbar-button.primary:hover{background:var(--accent-secondary);border-color:var(--accent-secondary)}.theme-toggle{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-tertiary);border:1px solid var(--border-default);border-radius:var(--radius-sm);cursor:pointer;color:var(--text-secondary);font-size:16px;transition:all var(--transition-fast)}.theme-toggle:hover{background:var(--bg-hover);color:var(--text-primary)}.sheet-tabs{display:flex;align-items:center;gap:2px;padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-secondary);border-top:1px solid var(--border-default);overflow-x:auto}.sheet-tab{padding:var(--spacing-xs) var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-default);border-bottom:none;border-radius:var(--radius-sm) var(--radius-sm) 0 0;font-size:12px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.sheet-tab:hover{background:var(--bg-hover);color:var(--text-primary)}.sheet-tab.active{background:var(--bg-primary);color:var(--accent-primary);border-color:var(--accent-primary);border-bottom:1px solid var(--bg-primary);margin-bottom:-1px;font-weight:500}.sheet-tab.add-tab{padding:var(--spacing-xs) var(--spacing-sm);background:transparent;border:1px dashed var(--border-default);color:var(--text-muted)}.sheet-tab.add-tab:hover{background:var(--selection-bg);color:var(--accent-primary);border-color:var(--accent-primary)}.formula-bar{display:flex;align-items:center;padding:var(--spacing-xs) var(--spacing-lg);background:var(--bg-secondary);border-bottom:1px solid var(--border-default);gap:var(--spacing-sm)}.cell-address{display:flex;align-items:center;justify-content:center;min-width:60px;padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-tertiary);border:1px solid var(--border-default);border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:12px;color:var(--text-secondary)}.formula-input-wrapper{flex:1;position:relative}.formula-input{width:100%;padding:var(--spacing-xs) var(--spacing-sm);background:var(--bg-tertiary);border:1px solid var(--border-default);border-radius:var(--radius-sm);font-family:var(--font-mono);font-size:13px;color:var(--text-primary)}.formula-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 2px #10b98133}.formula-input.formula-mode{border-color:var(--accent-primary);background:var(--selection-bg)}.main-content{flex:1;display:flex;overflow:hidden}.spreadsheet-container{flex:1;overflow:auto;position:relative}.spreadsheet-grid{display:grid;position:relative;min-width:max-content}.column-headers{display:flex;position:sticky;top:0;z-index:10;background:var(--header-bg)}.corner-cell{min-width:var(--row-number-width);height:var(--cell-height);background:var(--header-bg);border-right:1px solid var(--header-border);border-bottom:1px solid var(--header-border);position:sticky;left:0;z-index:20}.column-header{display:flex;align-items:center;justify-content:flex-start;height:var(--cell-height);padding:0 var(--spacing-sm);background:var(--header-bg);border-right:1px solid var(--header-border);border-bottom:1px solid var(--header-border);font-size:12px;font-weight:600;color:var(--text-secondary);cursor:pointer;transition:background var(--transition-fast);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.column-header:hover{background:var(--bg-hover)}.column-header.selected,.column-header.in-selection{background:var(--header-bg)}.column-header{position:relative}.column-resize-handle{position:absolute;right:0;top:0;bottom:0;width:5px;cursor:col-resize;background:transparent;z-index:10}.column-resize-handle:hover{background:var(--accent-primary)}.spreadsheet-row{display:flex}.row-number{display:flex;align-items:center;justify-content:center;min-width:var(--row-number-width);height:var(--cell-height);background:var(--header-bg);border-right:1px solid var(--header-border);border-bottom:1px solid var(--header-border);font-size:12px;color:var(--text-muted);cursor:pointer;position:sticky;left:0;z-index:5;transition:background var(--transition-fast)}.row-number:hover{background:var(--bg-hover)}.row-number.selected,.row-number.in-selection{background:var(--header-bg)}.cell{display:flex;align-items:center;height:var(--cell-height);padding:0 var(--spacing-sm);background:var(--bg-primary);border-right:1px solid var(--border-default);border-bottom:1px solid var(--border-default);font-size:13px;color:var(--text-primary);cursor:cell;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.cell.selected{background:var(--bg-selected);outline:2px solid var(--selection-border);outline-offset:-1px;border-radius:4px;z-index:100;position:relative}.cell.in-selection{background:var(--selection-bg)}.cell.formula-ref{outline:2px dashed var(--accent-light);outline-offset:-2px;background:#34d3991a}.cell.editing{padding:0;outline:2px solid var(--accent-primary)}.cell-input{width:100%;height:100%;padding:0 var(--spacing-sm);background:var(--bg-primary);border:none;font-family:var(--font-sans);font-size:13px;color:var(--text-primary);outline:none}.cell.type-number{justify-content:flex-end;font-family:var(--font-mono)}.cell.type-formula{color:var(--accent-primary)}.cell.type-error{color:var(--accent-error);font-style:italic}.cell.type-checkbox{justify-content:center}.cell-checkbox{width:18px;height:18px;accent-color:var(--accent-primary);cursor:pointer}.status-bar{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-xs) var(--spacing-lg);background:var(--bg-secondary);border-top:1px solid var(--border-default);font-size:12px;color:var(--text-muted)}.status-info{display:flex;align-items:center;gap:var(--spacing-lg)}.status-item{display:flex;align-items:center;gap:var(--spacing-xs)}.status-mode{padding:2px 8px;background:var(--accent-primary);color:#fff;border-radius:var(--radius-sm);font-weight:500}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--bg-secondary);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);min-width:400px;max-width:90vw;max-height:90vh;overflow:hidden}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);border-bottom:1px solid var(--border-default)}.modal-title{font-size:16px;font-weight:600;color:var(--text-primary)}.modal-body{padding:var(--spacing-lg);overflow-y:auto}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--spacing-sm);padding:var(--spacing-lg);border-top:1px solid var(--border-default)}