:root{--color-primary: #0056b3;--color-success: #28a745;--color-warning: #ffc107;--color-danger: #dc3545;--color-info: #17a2b8;--color-bg-app: #f0f2f5;--color-bg-surface: #ffffff;--color-bg-input: #f8f9fa;--color-bg-tooltip: #333333;--color-bg-modal-overlay: rgba(0, 0, 0, .5);--color-text-primary: #212529;--color-text-secondary: #6c757d;--color-text-label: #495057;--color-text-inverse: #ffffff;--color-text-brand: #004085;--color-border-light: #e1e4e8;--color-border-strong: #ced4da;--color-border-focus: #80bdff;--chart-color-main: #004085;--chart-color-success: #28a745;--chart-color-warning: #ffa500;--chart-color-danger: #dc3545;--chart-color-network: #666666;--chart-color-point-req: #dc3545;--chart-color-point-op: #28a745;--chart-color-1: #004085;--chart-color-2: #dc3545;--chart-color-3: #28a745;--chart-color-4: #ffa500;--chart-color-5: #6f42c1;--chart-color-6: #e83e8c;--chart-color-7: #17a2b8;--chart-color-8: #fd7e14;--chart-color-9: #20c997;--chart-color-10: #343a40;--font-family-ui: "Segoe UI", system-ui, -apple-system, sans-serif;--font-family-mono: "Consolas", "Monaco", monospace;--font-xs: clamp(10px, .8vw, 12px);--font-sm: clamp(12px, 1vw, 14px);--font-body: clamp(14px, 1.2vw, 16px);--font-lg: clamp(16px, 1.4vw, 20px);--font-xl: clamp(20px, 1.8vw, 28px);--font-h1: clamp(24px, 2vw, 32px);--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--radius-sm: 3px;--radius-md: 6px;--radius-lg: 12px;--header-height: 48px;--sidebar-width: clamp(450px, 35vw, 600px);--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-card: 0 1px 3px rgba(0, 0, 0, .08);--shadow-float: 0 4px 12px rgba(0, 0, 0, .15)}:root{--bg-app: var(--color-bg-app);--bg-surface: var(--color-bg-surface);--bg-input: var(--color-bg-input);--border-light: var(--color-border-light);--border-strong: var(--color-border-strong);--border-focus: var(--color-border-focus);--text-primary: var(--color-text-primary);--text-secondary: var(--color-text-secondary);--text-label: var(--color-text-label);--brand-primary: var(--color-primary);--brand-success: var(--color-success);--brand-warning: var(--color-warning);--brand-danger: var(--color-danger);--slate-50: #f8fafc;--slate-100: #f1f5f9;--slate-200: #e2e8f0;--slate-400: #94a3b8;--slate-700: #334155;--slate-800: #1e293b;--slate-900: #0f172a;--slate-950: #020617;--header-blur: blur(12px);--header-bg: rgba(15, 23, 42, .9);--fs-xs: var(--font-xs);--fs-sm: var(--font-sm);--fs-base: var(--font-body);--fs-lg: var(--font-lg);--fs-xl: var(--font-xl);--bg-card: var(--color-bg-surface);--font-ui: var(--font-family-ui);--font-mono: var(--font-family-mono)}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:1000;display:none;align-items:center;justify-content:center}.modal-box{background:var(--bg-surface);padding:var(--space-lg);border-radius:var(--radius-md);width:400px;box-shadow:var(--shadow-float)}*{box-sizing:border-box}body{margin:0;padding:0;font-family:var(--font-ui);font-size:var(--fs-base);color:var(--text-primary);background-color:var(--bg-app);min-height:100vh;overflow-y:scroll;overflow-x:hidden}html,body{height:100%;margin:0;padding:0;overflow:hidden}.app-shell{display:flex;flex-direction:column;height:100vh;overflow:hidden}.app-header{flex:0 0 var(--header-height);background-color:#343a40;display:flex;align-items:center;padding:0 var(--space-md);color:#fff;justify-content:space-between;box-shadow:0 1px 4px #0003;z-index:100;position:sticky;top:0;gap:15px}.brand,.workspace-selector,.auth-section,#buildVersion{flex-shrink:0}.nav-tabs{display:flex;gap:2px;height:100%;align-items:flex-end;flex-shrink:1;overflow-x:auto;scrollbar-width:none}.nav-tabs::-webkit-scrollbar{display:none}.tab-btn{padding:0 var(--space-lg);height:100%;display:flex;align-items:center;color:#adb5bd;cursor:pointer;background:transparent;border-bottom:3px solid transparent;font-weight:600;font-size:var(--fs-sm);text-transform:uppercase;letter-spacing:.5px;transition:all .2s}.tab-btn:hover{color:#fff;background:#ffffff0d}.tab-btn.active{color:#fff;border-bottom-color:var(--brand-success);background:#ffffff1a}.workspace-grid{display:none;grid-template-columns:1fr var(--sidebar-width);grid-template-rows:100%;align-items:stretch;width:100%;height:100%;position:relative;overflow:hidden;transition:grid-template-columns .3s ease}.workspace-grid.active{display:grid}.stage-container{padding:var(--space-md);display:flex;flex-direction:column;overflow-y:auto;overflow-x:hidden;flex:1}.stage-view{display:none;flex-direction:column;gap:var(--space-md);width:100%}.stage-view.active{display:flex}.stage{display:contents;padding:var(--space-md);display:flex;flex-direction:column;gap:var(--space-md);min-width:0}.controls{background:var(--bg-surface);border-left:1px solid var(--border-light);display:flex;flex-direction:column;position:sticky;top:var(--header-height);height:calc(100vh - var(--header-height));overflow:hidden;z-index:10}.controls-header{padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--border-light);background:#f8f9fa;display:flex;align-items:center;flex-shrink:0}.logo-wrapper{display:flex;align-items:center;gap:10px;margin-left:auto}.controls-title{margin:0;font-size:var(--fs-base);font-weight:700;color:var(--brand-primary);text-transform:uppercase;letter-spacing:.5px}.controls-body{flex:1;overflow-y:auto;overflow-x:hidden;padding:var(--space-md);scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}.controls-submit{padding:var(--space-md);border-top:1px solid var(--border-light);background:#f8f9fa;display:flex;flex-direction:column;gap:var(--space-sm);flex-shrink:0}.controls-content{display:none}.controls-content.active{display:block}.workspace-view{display:none;flex-direction:column;flex:1;min-height:0;overflow-y:auto;justify-content:flex-start;align-items:stretch}.workspace-view.active{display:flex}@media (max-width: 1200px){#tab-calc.active,#tab-modes.active{display:block!important}.controls{position:static;width:100%!important;height:auto;overflow-y:visible;border-left:none;border-top:1px solid var(--border-light)}}@media (max-width: 768px){:root{--sidebar-width: 100%;--fs-base: 16px;--header-height: 44px}.controls-submit{position:sticky;bottom:0;z-index:20}}.control-group{border:1px solid var(--border-light);border-radius:var(--radius-sm);margin:0 0 var(--space-md) 0;padding:var(--space-sm) var(--space-sm) var(--space-sm)}.control-group legend{font-size:var(--fs-xs);font-weight:700;color:var(--text-secondary);text-transform:uppercase;padding:0 4px}.form-grid{display:grid;grid-template-columns:1fr;gap:8px}.form-row{display:grid;grid-template-columns:180px 1fr;align-items:center;gap:12px}.form-label{font-size:var(--fs-sm);font-weight:600;color:var(--text-label);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.form-input,.form-select{width:100%;padding:2px 8px;font-family:var(--font-ui);font-size:var(--fs-sm);color:var(--text-primary);background:var(--bg-input);border:1px solid var(--border-strong);border-radius:var(--radius-sm);transition:border-color .15s;height:44px;display:flex;align-items:center;line-height:normal}.form-select{padding-right:2px;cursor:pointer;font-weight:600}.form-input:focus,.form-select:focus{outline:none;border-color:var(--border-focus);background:#fff}.form-input[readonly]{background:#e9ecef;color:var(--text-secondary)}.input-file-wrapper{display:flex;flex-direction:column;gap:4px;align-items:flex-start}.link-action{font-size:var(--fs-xs);color:var(--brand-primary);text-decoration:none;margin-left:auto;flex-shrink:0;white-space:nowrap}.logo-btn{height:40px;cursor:pointer;border:1px solid #ced4da;border-radius:var(--radius-sm);background:#fff;box-shadow:0 2px 4px #0000001a;transition:all .2s}.logo-btn:hover{box-shadow:0 4px 8px #00000026;transform:translateY(-1px);border-color:var(--brand-primary)}input[type=file]::file-selector-button{font-family:var(--font-ui);font-size:var(--fs-sm);font-weight:600;color:#495057;background-color:#e9ecef;padding:6px 12px;border:1px solid #ced4da;border-radius:var(--radius-sm);cursor:pointer;margin-right:10px;box-shadow:0 2px 4px #0000001a;transition:all .2s}input[type=file]::file-selector-button:hover{background-color:#dee2e6;box-shadow:0 3px 6px #00000026;transform:translateY(-1px)}input[type=file]{font-size:18px}.curve-grid{display:grid;gap:6px}.curve-row{display:grid;grid-template-columns:120px 1fr;align-items:center;gap:8px}.curve-row input{font-family:var(--font-mono);font-size:var(--fs-base);letter-spacing:-.5px;height:40px}.btn{display:inline-flex;justify-content:center;align-items:center;padding:8px 16px;font-weight:600;font-size:var(--fs-sm);text-transform:uppercase;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:filter .2s;width:100%}.btn:hover{filter:brightness(110%)}.btn-primary{background-color:var(--brand-primary);color:#fff}.btn-success{background-color:var(--brand-success);color:#fff}.btn-secondary{background-color:var(--text-secondary);color:#fff}.btn-warning{background-color:var(--brand-warning);color:#212529}.btn-danger{background-color:var(--brand-danger);color:#fff}.btn-outline{background:transparent;border:1px solid var(--border-strong);color:var(--text-primary)}.modal-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:1000;align-items:center;justify-content:center}.modal-overlay.active{display:flex}.modal-box{background:#fff;padding:var(--space-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-float);width:400px;max-width:90vw}@media (max-width: 768px){.form-row{grid-template-columns:1fr;gap:2px;margin-bottom:8px}}.catalog-select-wrapper{display:grid;grid-template-columns:1fr 44px;gap:5px;align-items:center}.btn-mini{height:44px;width:44px;display:flex;align-items:center;justify-content:center;background:var(--bg-card);border:1px solid var(--border-strong);border-radius:var(--radius-sm);cursor:pointer;font-size:20px;font-weight:700;color:var(--brand-success);transition:all .2s}.btn-mini:hover{background:var(--brand-primary);color:#fff}.catalog-nav-item{display:flex;align-items:center;gap:12px;padding:10px 15px;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease;border:1px solid transparent;color:var(--slate-600);font-weight:500}.catalog-nav-item:hover{background:var(--slate-100);color:var(--brand-primary)}.catalog-nav-item.active{background:#fff;color:var(--brand-primary);border-color:var(--border-md);box-shadow:var(--shadow-sm)}.catalog-nav-icon{font-size:18px;opacity:.8}.chart-card{background:var(--bg-surface);padding:var(--space-sm);flex:1;display:flex;flex-direction:column;position:relative;min-height:500px}.chart-top{min-height:800px!important}.chart-bottom{min-height:600px!important}.chart-instance{flex:1;width:100%;height:100%}.math-panel{background:var(--bg-surface);padding:var(--space-md);font-family:var(--font-mono);font-size:24px!important;color:var(--text-primary);border:1px solid var(--border-light);border-radius:var(--radius-md);margin-top:var(--space-md)}.math-panel *{font-size:24px!important}.math-header{display:flex;justify-content:space-between;margin-bottom:16px;padding-bottom:var(--space-xs);border-bottom:1px dashed var(--border-light);color:var(--brand-success);font-weight:700}.math-results-header{font-family:var(--font-ui);font-size:28px!important;font-weight:700;text-transform:uppercase;color:var(--brand-primary);margin-bottom:12px;letter-spacing:.5px}.math-op-row{display:flex;flex-wrap:wrap;align-items:center;gap:24px;font-family:var(--font-ui);font-size:18px;color:#333;line-height:1.6}.math-op-item{display:flex;align-items:center}.math-op-val{font-weight:700;color:#000;margin:0 4px}.math-sep{color:#ccc;font-weight:300;font-size:1.2em;display:inline-block;margin:0 4px}.network-block{margin-top:10px;margin-bottom:10px;line-height:1.5;color:#555}.network-title{font-weight:700;color:#666;font-size:20px!important;text-transform:uppercase;margin-right:8px}.network-formula{font-family:Times New Roman,serif;font-style:italic;font-size:26px!important;color:#333}.network-coeff-label{font-weight:600;margin-right:6px}.network-coeff-val{font-weight:700;color:#000}.coeff-grid{margin-top:var(--space-sm);overflow-x:auto}.coeff-table{width:auto;min-width:650px;border-collapse:collapse;font-size:24px;font-family:var(--font-mono)}.coeff-table th,.coeff-table td{border:1px solid var(--border-strong);padding:6px 10px;text-align:right}.coeff-table th{background:#e9ecef;font-weight:700;text-align:center;color:var(--text-primary)}.coeff-table td:first-child{text-align:left;background:#f8f9fa;width:100px;font-weight:700}.math-accuracy{font-size:.9em;color:#666;margin-top:5px;font-style:italic;border-top:1px solid #eee;padding-top:4px}@media (max-width: 768px){.chart-card{min-height:300px}}.coeff-input-grid{display:grid;grid-template-columns:140px repeat(4,1fr) 140px;gap:8px;align-items:center;margin-top:10px}.coeff-input-header{font-size:var(--fs-xs);font-weight:700;color:var(--text-secondary);text-align:center;background:#f1f3f5;padding:4px;border-radius:var(--radius-sm)}.coeff-input-label{font-size:var(--fs-sm);font-weight:600;color:var(--text-label)}.form-input.mini{height:40px;padding:6px 12px;font-size:var(--fs-sm);text-align:center}.form-select-disabled{height:40px;display:flex;align-items:center;justify-content:center;background:#f8f9fa;border:1px solid #ddd;border-radius:var(--radius-sm);color:#666;font-size:var(--fs-xs);font-weight:700}.archive-table{width:max-content;min-width:100%;border-collapse:separate;border-spacing:0;font-size:var(--fs-sm);table-layout:auto}.archive-table th,.archive-table td{padding:8px 12px;border-bottom:1px solid var(--border-light);border-right:1px solid var(--border-light);text-align:center;white-space:nowrap;vertical-align:top;background-color:#fff!important}.archive-table thead tr:first-child th{position:sticky;top:0;z-index:22;background-color:#e9ecef}.archive-table thead tr.filter-row th{position:sticky;top:40px;z-index:20;background-color:#f8f9fa;border-bottom:2px solid var(--border-light)}.archive-table [data-col=id],.archive-table [data-col=name],.archive-table [data-col=oem_name]{position:sticky!important;z-index:15;background-color:#fff!important;border-right:1px solid var(--border-light)}.archive-table [data-col=id]{left:0;z-index:16;width:50px;min-width:50px}.archive-table [data-col=name]{left:50px;z-index:16;width:150px;min-width:150px}.archive-table [data-col=oem_name]{left:200px;z-index:16;width:120px;min-width:120px;box-shadow:2px 0 5px #0000000d}.archive-table td[data-col=id],.archive-table td[data-col=name],.archive-table td[data-col=oem_name],.archive-table td[data-col=actions]{background-color:#fff}.archive-table [data-col=id]{width:50px;min-width:50px}.archive-table [data-col=name]{min-width:150px;width:150px}.archive-table [data-col=oem_name]{min-width:120px;width:120px}.archive-table [data-col=actions]{position:sticky;right:0;z-index:10;background-color:#fff;box-shadow:-2px 0 5px #0000000d}.archive-table thead tr th[data-col=id],.archive-table thead tr th[data-col=name],.archive-table thead tr th[data-col=oem_name],.archive-table thead tr th[data-col=actions]{z-index:30;background-color:#e9ecef!important}.archive-table thead tr.filter-row th[data-col=id],.archive-table thead tr.filter-row th[data-col=name],.archive-table thead tr.filter-row th[data-col=oem_name],.archive-table thead tr.filter-row th[data-col=actions]{z-index:25;background-color:#f8f9fa!important}.archive-table th:nth-child(16),.archive-table td:nth-child(16),.archive-table th:nth-child(18),.archive-table td:nth-child(18){text-align:right}.archive-table th:nth-child(18),.archive-table td:nth-child(18){white-space:normal!important;min-width:300px;max-width:600px;word-break:break-word}.archive-table th:nth-child(19),.archive-table td:nth-child(19){text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:150px;max-width:250px}.archive-table th{background:#e9ecef;font-weight:700;color:var(--text-primary)}.archive-table tr:hover td{background:#f1f3f5;cursor:pointer}.archive-table tr.row-comparison td{background-color:#e6fcf5!important;color:#087f5b;font-weight:500}.archive-table tr.row-modes td{background-color:#e7f5ff!important;color:#1864ab;font-weight:500}.archive-table tr.row-both td{background-color:#fff4e6!important;color:#d9480f;font-weight:500}.archive-table tr.row-comparison:hover td{background-color:#c3fae8!important}.archive-table tr.row-modes:hover td{background-color:#d0ebff!important}.archive-table tr.row-both:hover td{background-color:#ffe8cc!important}.archive-table td{transition:background-color .2s ease,color .2s ease}#tab-archive.active,#tab-selection.active{display:flex;flex-direction:column;height:100%}.archive-wrapper{width:100%;box-sizing:border-box;background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-card);display:flex;flex-direction:column;flex:1;min-height:0}.archive-toolbar{padding:var(--space-sm);background:#f8f9fa;border-bottom:1px solid var(--border-light);display:flex;gap:var(--space-sm);flex-wrap:wrap;flex-shrink:0}.archive-table-container{flex:1;overflow:auto;position:relative}.col-selector-container{position:relative;display:inline-block}.col-dropdown{display:none;position:absolute;right:0;top:100%;z-index:1000;background:#fff;box-shadow:var(--shadow-lg);border:1px solid var(--border-light);border-radius:var(--radius-md);min-width:200px;max-height:400px;overflow-y:auto;padding:var(--space-xs)}.col-dropdown.show{display:block}.col-item{display:flex;align-items:center;gap:8px;padding:6px 12px;cursor:pointer;font-size:13px;transition:background .2s;-webkit-user-select:none;user-select:none}.col-item:hover{background:#f1f3f5}.col-item input{cursor:pointer}#tab-digitizer.workspace-view{display:none;flex-direction:column;height:calc(100vh - var(--header-height));overflow:hidden;position:relative;align-items:stretch;width:100%}#tab-digitizer.active{display:flex}.digitizer-toolbar{padding:var(--space-sm) var(--space-md);background:#f8f9fa;border-bottom:1px solid var(--border-light);display:flex;justify-content:space-between;align-items:center;gap:15px;z-index:20;flex-shrink:0}.digitizer-container{flex:1;position:relative;background:#333;overflow:hidden;cursor:grab;display:flex;min-height:500px;box-sizing:border-box}.radio-label{display:flex;align-items:center;gap:4px;cursor:pointer;font-size:14px;font-weight:600;color:var(--text-secondary);background:#fff;padding:4px 8px;border:1px solid var(--border-light);border-radius:4px;transition:all .2s}.radio-label input{display:none}.radio-label:has(input:checked){color:#fff;border-color:transparent}.radio-label:has(input[value=QH]:checked){background:#ff4d4d}.radio-label:has(input[value=QP]:checked){background:#2ecc71}.radio-label:has(input[value=QN]:checked){background:#3498db}.radio-label:has(input[value=QE]:checked){background:#f39c12}.digi-overlay-controls{position:absolute;top:10px;left:10px;width:300px;max-height:calc(100% - 20px);overflow-y:auto;background:#fffffff2;border-radius:8px;box-shadow:0 4px 12px #0003;padding:10px;display:flex;flex-direction:column;gap:10px;z-index:100}#digiCanvas{display:block;width:100%}.digi-panel{position:absolute;background:#fff;margin:10px;padding:12px;border-radius:6px;box-shadow:0 4px 12px #0003;z-index:10}.top-left{top:50px;left:20px;width:380px}.top-right{top:50px;right:20px;width:300px;max-height:80%;overflow-y:auto}.digi-panel h3{margin:0 0 10px;font-size:14px;text-transform:uppercase;color:#555;border-bottom:2px solid #eee;padding-bottom:5px}.calibration-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}.calibration-row label{font-weight:700;font-size:14px;width:25px;color:#444}.calibration-row input{flex:1;padding:4px;border:1px solid #ddd;border-radius:3px;font-family:var(--font-mono);font-size:14px}.calibration-row button{padding:4px 10px;background:#007bff;color:#fff;border:none;border-radius:3px;cursor:pointer;font-size:12px;font-weight:700;min-width:80px;font-family:var(--font-ui)}.calibration-row button:disabled{background:#ccc;cursor:not-allowed}.mode-selector{display:flex;gap:4px;margin-bottom:5px}.mode-btn-label{flex:1;text-align:center;padding:6px;border:1px solid #ddd;background:#eee;cursor:pointer;font-size:13px;border-radius:4px;font-weight:700;transition:all .2s}.mode-selector input:checked+.mode-btn-label{color:#fff;border-color:transparent}.mode-selector input[value=QH]:checked+.mode-btn-label{background:#ff4d4d}.mode-selector input[value=QP]:checked+.mode-btn-label{background:#2ecc71}.mode-selector input[value=QN]:checked+.mode-btn-label{background:#3498db}.mode-selector input[value=QE]:checked+.mode-btn-label{background:#f39c12}#digiPointsList{max-height:300px;overflow-y:auto;font-size:12px}.points-group-header{padding:6px;font-weight:700;margin-top:5px;margin-bottom:5px}.point-row{display:flex;justify-content:space-between;padding:4px 8px;background:#fcfcfc;border-bottom:1px solid #eee}.point-row:hover{background:#f0f0f0}.export-area{margin-top:auto;padding:15px;background:#343a40;color:#fff}.mini-input{width:100%;height:38px;padding:6px 12px;margin-bottom:5px;border:1px solid #ccc;border-radius:4px;font-family:Consolas,Monaco,monospace!important;font-size:var(--fs-base)}.btn-sm{padding:6px 12px;font-size:var(--fs-sm);min-width:auto;font-family:Segoe UI,system-ui,sans-serif!important}.cal-group .btn-sm{padding:4px 6px;font-size:11px;text-transform:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.app-header{position:sticky;top:0;z-index:1000;height:var(--header-height);background-color:var(--header-bg);backdrop-filter:var(--header-blur);-webkit-backdrop-filter:var(--header-blur);border-bottom:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-lg);color:var(--slate-50)}.header-left{display:flex;align-items:center;gap:var(--space-md);height:100%}.brand{font-size:1.25rem;font-weight:800;letter-spacing:.5px;color:#fff;display:flex;align-items:center}.brand-suffix{font-weight:300;font-size:.8em;color:var(--slate-400);margin-left:8px}.header-center{height:100%;display:flex;align-items:center}.nav-tabs{display:flex;height:100%;gap:var(--space-lg);align-items:center}.tab-btn{position:relative;height:100%;display:flex;align-items:center;padding:0 var(--space-sm);font-size:15px;font-weight:500;color:var(--slate-400);text-transform:none;letter-spacing:normal;transition:all .2s ease;cursor:pointer;border-bottom:none!important;background:transparent!important}.tab-btn:hover{color:#fff}.tab-btn.active{color:#fff;font-weight:700}.tab-btn.active:after{content:"";position:absolute;bottom:0;left:0;width:100%;height:3px;background-color:var(--brand-success);border-radius:2px 2px 0 0}.header-right{display:flex;align-items:center;gap:var(--space-lg);height:100%}.status-badge{display:flex;align-items:center;gap:8px;padding:6px 14px;background:#ffffff14;border:1px solid rgba(255,255,255,.08);border-radius:99px;font-size:13px;font-weight:600;color:var(--slate-200);line-height:1}.status-badge i{font-size:10px}.auth-section{display:flex;align-items:center;gap:16px;height:100%}.user-info{font-size:14px;color:var(--slate-400)}.btn-auth{background:#ffffff1a!important;border:1px solid rgba(255,255,255,.2)!important;color:#fff!important;padding:8px 16px!important;font-size:14px!important;border-radius:8px!important;text-transform:none!important;line-height:normal}.btn-auth:hover{background:#fff3!important}.build-version{font-size:10px;font-family:var(--font-mono);color:var(--slate-400);opacity:.6}.nav-toggle{display:none;flex-direction:column;justify-content:space-between;width:24px;height:18px;background:transparent;border:none;cursor:pointer;padding:0;z-index:1001}.nav-toggle span{width:100%;height:2px;background-color:#fff;border-radius:2px;transition:all .3s ease}body.nav-open .nav-toggle span:nth-child(1){transform:translateY(8px) rotate(45deg)}body.nav-open .nav-toggle span:nth-child(2){opacity:0}body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}.app-header{max-width:100vw;box-sizing:border-box}.header-left,.header-right{flex-shrink:0}.header-center{min-width:0;flex:1;display:flex;justify-content:center}@media (min-width: 1921px){.nav-tabs{gap:clamp(8px,1.2vw,24px)}.tab-btn{padding:0 clamp(4px,.8vw,16px);white-space:nowrap}}@media (max-width: 1920px){.nav-toggle{display:flex}.header-center,.header-right .version-selector,.header-right .status-indicators{display:none}body.nav-open .nav-toggle span:nth-child(1){transform:translateY(8px) rotate(45deg)}body.nav-open .nav-toggle span:nth-child(2){opacity:0}body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}body.nav-open .header-center{display:flex!important;visibility:visible!important;position:fixed!important;top:var(--header-height, 48px)!important;left:0!important;width:100%!important;height:calc(100vh - var(--header-height, 48px))!important;background:#0f172a!important;z-index:9999!important;padding:var(--space-lg);overflow-y:auto;flex-direction:column;animation:slideDown .3s ease-out}body.nav-open .nav-tabs{flex-direction:column;gap:4px;height:auto;width:100%}body.nav-open .tab-btn{width:100%;justify-content:flex-start;font-size:1.1rem;padding:16px;height:auto;white-space:normal;border-bottom:1px solid rgba(255,255,255,.05)!important}body.nav-open .tab-btn.active:after{left:0;bottom:0;width:4px;height:100%;border-radius:0 2px 2px 0}}@keyframes slideDown{0%{transform:translateY(-10px);opacity:0}to{transform:translateY(0);opacity:1}}.workspace-selector{margin-left:15px;display:flex;align-items:center;min-width:160px;flex-shrink:0}.workspace-select{background:#fff;background:var(--bg-card);border:1px solid var(--border-light);border-radius:6px;padding:5px 10px;font-size:13px;font-weight:600;color:var(--brand-primary);cursor:pointer;width:100%}.auth-section{display:flex;align-items:center;gap:10px;margin-left:auto;margin-right:15px;min-width:100px;flex-shrink:0}.user-info{font-size:13px;color:var(--text-secondary);font-weight:500}.btn-close{background:none;border:none;font-size:24px;line-height:1;color:var(--text-secondary);cursor:pointer;padding:0}.btn-close:hover{color:var(--brand-danger)}.modal-box .form-input{width:100%;box-sizing:border-box}#authModal .modal-box{animation:slideDown .3s ease-out}@keyframes slideDown{0%{transform:translateY(-30px);opacity:0}to{transform:translateY(0);opacity:1}}.user-role-badge{padding:2px 6px;border-radius:4px;font-size:11px;text-transform:uppercase;font-weight:700}.role-admin{background:#e3f2fd;color:#1976d2}.role-user{background:#f5f5f5;color:#616161}#localFileControls{transition:all .3s ease}#localFileName{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border-left:2px solid var(--border-light);padding-left:10px;margin-left:5px}.spinner{width:50px;height:50px;border:5px solid #f3f3f3;border-top:5px solid var(--brand-primary);border-radius:50%;animation:spin 1s linear infinite;display:inline-block}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.modes-sidebar{background:var(--bg-surface);display:flex;flex-direction:column;gap:20px}.group-card{border:1px solid var(--border-light);transition:transform .2s ease,box-shadow .2s ease;cursor:default}.group-card:hover{transform:translateY(-2px);box-shadow:0 4px 8px #0000001a}.group-card .btn-close{background:none;border:none;font-size:18px;color:var(--text-secondary);cursor:pointer;line-height:1}.group-card .btn-close:hover{color:var(--brand-danger)}.banner{padding:12px 20px;border-radius:var(--radius-md);font-size:14px;font-weight:500;line-height:1.4;display:flex;align-items:center;gap:12px}.banner-danger{background:#fff5f5;border-left:4px solid var(--brand-danger);color:#c92a2a}.banner-warning{background:#fff9db;border-left:4px solid var(--brand-warning);color:#94710d}.modes-summary-panel{background:var(--bg-surface);padding:15px;border:1px solid var(--border-light);border-radius:var(--radius-md);margin-top:15px;text-align:center;box-shadow:0 2px 4px #0000000d}.math-op-row{display:flex;gap:20px;align-items:center;justify-content:center;font-size:18px;font-weight:600;color:var(--text-primary)}.math-op-item{display:flex;align-items:center;gap:8px}.math-op-val{color:var(--brand-primary);font-family:var(--font-mono);font-size:20px}.math-sep{color:var(--border-light);font-weight:300}#modes-chart-canvas{border-radius:var(--radius-md);background:#fff}.lang-switcher{position:relative;margin-right:15px;display:flex!important;align-items:center;visibility:visible!important;opacity:1!important}.lang-btn-current{background:var(--color-bg-surface);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);padding:6px 12px;cursor:pointer;display:flex!important;align-items:center;gap:8px;font-size:var(--font-sm);font-weight:600;color:var(--color-text-primary);transition:all .2s ease;box-shadow:var(--shadow-sm)}.lang-btn-current:hover{background:var(--color-bg-input);border-color:var(--color-border-focus)}.lang-dropdown{position:absolute;top:100%;right:0;margin-top:8px;background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-md);box-shadow:var(--shadow-float);display:none;z-index:1000;min-width:130px;overflow:hidden;animation:slideDown .2s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.lang-dropdown.show{display:block}.lang-option{padding:10px 15px;display:flex;align-items:center;gap:10px;cursor:pointer;transition:background .2s;font-size:var(--font-sm);color:var(--color-text-primary)}.lang-option:hover{background:var(--color-bg-input)}.lang-option.active{background:#0056b314;color:var(--color-primary);font-weight:700}.lang-flag{font-size:1.1rem;line-height:1}