:root{--primary: #1a5f7a;--primary-dark: #134b5f;--primary-light: #2e8ba8;--primary-gradient: linear-gradient(135deg, #1a5f7a 0%, #2e8ba8 100%);--accent: #57c785;--accent-dark: #3da866;--accent-light: #7dd9a0;--bg-primary: #f8fafc;--bg-secondary: #ffffff;--bg-tertiary: #f1f5f9;--bg-hover: #e2e8f0;--text-primary: #1e293b;--text-secondary: #475569;--text-muted: #94a3b8;--text-inverse: #ffffff;--border: #e2e8f0;--border-focus: #1a5f7a;--success: #22c55e;--success-bg: #dcfce7;--error: #ef4444;--error-bg: #fee2e2;--warning: #f59e0b;--warning-bg: #fef3c7;--info: #3b82f6;--info-bg: #dbeafe;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .35s ease;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-size-xs: clamp(.75rem, .7rem + .25vw, .875rem);--font-size-sm: clamp(.8125rem, .75rem + .3vw, .9375rem);--font-size-base: clamp(.875rem, .8rem + .4vw, 1.125rem);--font-size-lg: clamp(1rem, .9rem + .5vw, 1.25rem);--font-size-xl: clamp(1.125rem, 1rem + .6vw, 1.5rem);--font-size-2xl: clamp(1.25rem, 1.1rem + .8vw, 1.875rem);--font-size-3xl: clamp(1.5rem, 1.3rem + 1vw, 2.25rem);--touch-target-min: 44px;--max-content-width: 1600px;--safe-area-top: env(safe-area-inset-top, 0px);--safe-area-bottom: env(safe-area-inset-bottom, 0px);--safe-area-left: env(safe-area-inset-left, 0px);--safe-area-right: env(safe-area-inset-right, 0px)}[data-theme=dark]{--primary: #3b9fc2;--primary-dark: #2e8ba8;--primary-light: #5bb8d6;--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #334155;--bg-hover: #475569;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-muted: #64748b;--border: #334155;--border-focus: #3b9fc2;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .5)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-family);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;color:var(--text-primary)}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}h4{font-size:1.125rem}.header{background:var(--primary-gradient);color:var(--text-inverse);padding:var(--spacing-md) var(--spacing-xl);display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow-md);position:sticky;top:0;z-index:100}.header-title{display:flex;align-items:center;gap:var(--spacing-md)}.header-title h1{color:var(--text-inverse);font-size:1.5rem;font-weight:700;display:flex;flex-direction:column;line-height:1.2}.header-brand{font-weight:800}.header-subtitle{font-size:.75em;font-weight:400;opacity:.9}.header-logo{width:40px;height:40px;background:#fff3;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.25rem}.header-logo-img{width:48px;height:48px;object-fit:contain;border-radius:var(--radius-md);background:#ffffff1a;padding:4px}.btn-icon,.btn-text{display:inline}.header-actions{display:flex;gap:var(--spacing-md);align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);font-family:inherit;font-size:.9375rem;font-weight:500;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;white-space:nowrap}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--text-inverse);color:var(--primary)}.btn-primary:hover:not(:disabled){background:#ffffffe6;transform:translateY(-1px)}.btn-secondary{background:#ffffff26;color:var(--text-inverse);border:1px solid rgba(255,255,255,.25)}.btn-secondary:hover:not(:disabled){background:#ffffff40}.btn-accent{background:var(--accent);color:var(--text-inverse)}.btn-accent:hover:not(:disabled){background:var(--accent-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}.btn-outline:hover:not(:disabled){background:var(--primary);color:var(--text-inverse)}.btn-danger{background:var(--error);color:var(--text-inverse)}.btn-danger:hover:not(:disabled){background:#dc2626}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background:var(--bg-hover);color:var(--text-primary)}.btn-sm{padding:var(--spacing-xs) var(--spacing-md);font-size:.875rem}.btn-lg{padding:var(--spacing-md) var(--spacing-xl);font-size:1rem}.btn-icon{padding:var(--spacing-sm);width:40px;height:40px}.header .auth-buttons{display:flex;gap:var(--spacing-md);align-items:center}.header .auth-buttons .btn-ghost{color:#fff;background:transparent;border:1px solid rgba(255,255,255,.3)}.header .auth-buttons .btn-ghost:hover{background:#ffffff26;border-color:#ffffff80;color:#fff}.theme-toggle{background:#ffffff26;border:none;border-radius:var(--radius-md);padding:var(--spacing-sm);cursor:pointer;color:var(--text-inverse);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.theme-toggle:hover{background:#ffffff40}.theme-toggle svg{width:24px;height:24px}.main-container{flex:1;display:flex;max-width:1600px;margin:0 auto;width:100%;padding:var(--spacing-lg);gap:0}.resizable-container{position:relative}.form-pane{display:flex;flex-direction:column;min-width:400px;overflow-y:auto;padding-right:var(--spacing-md)}.dashboard{display:flex;flex-direction:column;gap:var(--spacing-lg)}.preview-pane{min-width:250px;flex-shrink:0;position:sticky;top:80px;max-height:calc(100vh - 100px);overflow-y:auto;padding-left:var(--spacing-md)}.preview-sidebar{width:400px;flex-shrink:0;position:sticky;top:80px;max-height:calc(100vh - 100px);overflow-y:auto}.resizable-divider{width:10px;flex-shrink:0;background:var(--border);cursor:col-resize;display:flex;align-items:center;justify-content:center;position:relative;transition:background var(--transition-fast);border-radius:var(--radius-sm);margin:0 2px}.resizable-divider:hover{background:var(--primary-light)}.resizable-divider.dragging{background:var(--primary)}.resizable-divider:focus{outline:2px solid var(--primary);outline-offset:2px}.divider-handle{display:flex;flex-direction:column;align-items:center;justify-content:center;height:60px;width:100%;color:var(--text-muted);transition:color var(--transition-fast)}.resizable-divider:hover .divider-handle,.resizable-divider.dragging .divider-handle{color:var(--text-inverse)}.divider-dots{font-size:16px;font-weight:700;letter-spacing:2px}.card{background:var(--bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--border);overflow:hidden}.card-header{padding:var(--spacing-md) var(--spacing-lg);background:var(--bg-tertiary);border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;cursor:pointer;-webkit-user-select:none;user-select:none;transition:background var(--transition-fast)}.card-header:hover{background:var(--bg-hover)}.card-header h3{display:flex;align-items:center;gap:var(--spacing-sm);font-size:1rem;font-weight:600}.card-header-icon{color:var(--primary)}.card-toggle{transition:transform var(--transition-base)}.card-toggle.collapsed{transform:rotate(-90deg)}.card-body{padding:var(--spacing-lg);overflow:hidden;transition:all var(--transition-base)}.card-body.collapsed{padding:0;height:0;opacity:0}.form-grid{display:grid;gap:var(--spacing-md)}.form-grid-2{grid-template-columns:repeat(2,1fr)}.form-grid-3{grid-template-columns:repeat(3,1fr)}.form-grid-4{grid-template-columns:repeat(4,1fr)}.form-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.form-group.full-width{grid-column:1 / -1}.form-label{font-size:.875rem;font-weight:500;color:var(--text-secondary)}.form-label .required{color:var(--error);margin-left:2px}.form-input,.form-select,.form-textarea{padding:var(--spacing-sm) var(--spacing-md);font-family:inherit;font-size:.9375rem;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-secondary);color:var(--text-primary);transition:all var(--transition-fast)}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--border-focus);box-shadow:0 0 0 3px #1a5f7a1a}.form-input::placeholder{color:var(--text-muted)}.form-input.error,.form-select.error{border-color:var(--error)}.form-input.success{border-color:var(--success)}.form-error{font-size:.8125rem;color:var(--error)}.form-hint{font-size:.8125rem;color:var(--text-muted)}.form-textarea{resize:vertical;min-height:80px}.select-wrapper{position:relative}.select-dropdown{position:absolute;top:100%;left:0;right:0;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);max-height:200px;overflow-y:auto;z-index:50;margin-top:4px}.select-option{padding:var(--spacing-sm) var(--spacing-md);cursor:pointer;transition:background var(--transition-fast)}.select-option:hover{background:var(--bg-hover)}.select-option.selected{background:var(--primary);color:var(--text-inverse)}.table-container{overflow-x:auto}.table{width:100%;border-collapse:collapse;font-size:.9375rem}.table th,.table td{padding:var(--spacing-sm) var(--spacing-md);text-align:left;border-bottom:1px solid var(--border)}.table th{background:var(--bg-tertiary);font-weight:600;color:var(--text-secondary);font-size:.8125rem;text-transform:uppercase;letter-spacing:.5px;white-space:nowrap}.table td{vertical-align:middle}.table tbody tr{transition:background var(--transition-fast)}.table tbody tr:hover{background:var(--bg-hover)}.table-input{width:100%;padding:var(--spacing-xs) var(--spacing-sm);border:1px solid transparent;border-radius:var(--radius-sm);background:transparent;font-family:inherit;font-size:.9375rem;color:var(--text-primary)}.table-input:focus{outline:none;border-color:var(--border-focus);background:var(--bg-secondary)}.table-input[type=number],.table .text-right{text-align:right}.table .text-center{text-align:center}.table-footer{background:var(--bg-tertiary);font-weight:600}.delete-btn{background:transparent;border:none;color:var(--text-muted);cursor:pointer;padding:var(--spacing-xs);border-radius:var(--radius-sm);transition:all var(--transition-fast)}.delete-btn:hover{background:var(--error-bg);color:var(--error)}.summary-panel{background:var(--bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--border);padding:var(--spacing-lg)}.summary-row{display:flex;justify-content:space-between;padding:var(--spacing-sm) 0;border-bottom:1px solid var(--border)}.summary-row:last-child{border-bottom:none}.summary-row.total{font-weight:700;font-size:1.125rem;color:var(--primary);margin-top:var(--spacing-sm);padding-top:var(--spacing-md);border-top:2px solid var(--primary)}.summary-label{color:var(--text-secondary)}.summary-value{font-weight:500;font-family:Inter,monospace}.summary-words{margin-top:var(--spacing-md);padding:var(--spacing-md);background:var(--bg-tertiary);border-radius:var(--radius-md);font-size:.875rem;color:var(--text-secondary);line-height:1.5}.action-bar{display:flex;gap:var(--spacing-md);flex-wrap:wrap;padding:var(--spacing-lg);background:var(--bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--border)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-lg);animation:fadeIn var(--transition-fast)}.modal{background:var(--bg-secondary);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);max-width:600px;width:100%;max-height:90vh;display:flex;flex-direction:column;animation:slideUp var(--transition-base)}.modal-header{padding:var(--spacing-lg);border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}.modal-header h2{font-size:1.25rem}.modal-close{background:transparent;border:none;cursor:pointer;color:var(--text-muted);padding:var(--spacing-xs);border-radius:var(--radius-sm);transition:all var(--transition-fast)}.modal-close:hover{background:var(--bg-hover);color:var(--text-primary)}.modal-body{padding:var(--spacing-lg);overflow-y:auto;flex:1}.modal-footer{padding:var(--spacing-lg);border-top:1px solid var(--border);display:flex;gap:var(--spacing-md);justify-content:flex-end}.toast{position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);background:var(--bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:var(--spacing-md) var(--spacing-lg);display:flex;align-items:center;gap:var(--spacing-md);z-index:2000;animation:slideIn var(--transition-base)}.toast.success{border-left:4px solid var(--success)}.toast.error{border-left:4px solid var(--error)}.print-view{background:var(--bg-primary);min-height:100vh}.print-controls{position:fixed;bottom:var(--spacing-lg);left:50%;transform:translate(-50%);background:var(--bg-secondary);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);display:flex;gap:var(--spacing-md);z-index:100}.invoice-page{max-width:210mm;margin:0 auto;background:#fff;box-shadow:var(--shadow-xl);padding:15mm}.invoice-header{text-align:center;border-bottom:2px solid #1a5f7a;padding-bottom:var(--spacing-md);margin-bottom:var(--spacing-lg)}.invoice-header h1{font-size:1.5rem;color:#1a5f7a;margin-bottom:var(--spacing-xs)}.invoice-parties{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-lg);margin-bottom:var(--spacing-lg)}.invoice-party{border:1px solid #ddd;padding:var(--spacing-md);border-radius:var(--radius-md)}.invoice-party h3{font-size:.875rem;color:#666;margin-bottom:var(--spacing-sm);text-transform:uppercase}.invoice-party p{margin:var(--spacing-xs) 0;font-size:.9375rem}.invoice-meta-table,.invoice-items-table{margin-bottom:var(--spacing-lg)}.invoice-items-table th,.invoice-items-table td{border:1px solid #ddd;padding:8px;font-size:.875rem}.invoice-items-table th{background:#f5f5f5;font-weight:600}.invoice-tax-summary{margin-bottom:var(--spacing-lg)}.invoice-total-section{border:2px solid #1a5f7a;padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-lg)}.invoice-total{display:flex;justify-content:space-between;font-size:1.25rem;font-weight:700;color:#1a5f7a}.invoice-words{margin-top:var(--spacing-sm);font-size:.9375rem;color:#333}.invoice-declaration{margin-top:var(--spacing-lg);padding-top:var(--spacing-lg);border-top:1px solid #ddd}.invoice-declaration h4{font-size:.875rem;margin-bottom:var(--spacing-sm)}.invoice-declaration p{font-size:.875rem;color:#666;font-style:italic}.invoice-jurisdiction{margin-top:var(--spacing-md);text-align:center;font-weight:600;color:#1a5f7a}.invoice-footer{margin-top:var(--spacing-xl);text-align:center;color:#999;font-size:.8125rem}.print-view .invoice-page{max-width:210mm;margin:0 auto;box-sizing:border-box;overflow:hidden}.print-view .invoice-page.print-a5{max-width:148mm}.print-view .invoice-items-table{overflow:hidden;box-sizing:border-box}.print-view .invoice-items-table table{table-layout:fixed;width:100%;max-width:100%;border-collapse:collapse;box-sizing:border-box}.print-view .invoice-items-table table th:nth-child(1),.print-view .invoice-items-table table td:nth-child(1){width:4%;text-align:center}.print-view .invoice-items-table table th:nth-child(2),.print-view .invoice-items-table table td:nth-child(2){width:32%;text-align:left}.print-view .invoice-items-table table th:nth-child(3),.print-view .invoice-items-table table td:nth-child(3){width:9%;text-align:center}.print-view .invoice-items-table table th:nth-child(4),.print-view .invoice-items-table table td:nth-child(4){width:7%;text-align:right}.print-view .invoice-items-table table th:nth-child(5),.print-view .invoice-items-table table td:nth-child(5){width:6%;text-align:center}.print-view .invoice-items-table table th:nth-child(6),.print-view .invoice-items-table table td:nth-child(6){width:10%;text-align:right}.print-view .invoice-items-table table th:nth-child(7),.print-view .invoice-items-table table td:nth-child(7){width:7%;text-align:right}.print-view .invoice-items-table table th:nth-child(8),.print-view .invoice-items-table table td:nth-child(8){width:7%;text-align:center}.print-view .invoice-items-table table th:nth-child(9),.print-view .invoice-items-table table td:nth-child(9){width:18%;text-align:right;font-weight:600}.print-view .invoice-items-table td,.print-view .invoice-items-table th{word-wrap:break-word;overflow-wrap:break-word;min-width:0;box-sizing:border-box}.print-view .invoice-items-table td:nth-child(2){word-break:break-word;-webkit-hyphens:auto;hyphens:auto}.print-view .invoice-tax-summary table{table-layout:fixed;width:100%;max-width:100%}@media screen and (max-width: 767px){.print-view .invoice-page{max-width:100%;overflow-x:visible}.print-view .invoice-items-table{overflow-x:auto;-webkit-overflow-scrolling:touch}.print-view .invoice-items-table table{min-width:600px}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(100px)}to{opacity:1;transform:translate(0)}}@media (max-width: 1200px){.preview-sidebar{display:none}}@media (max-width: 768px){.header{padding:var(--spacing-md);flex-direction:column;gap:var(--spacing-md)}.header-title h1{font-size:1.125rem}.header-actions{width:100%;justify-content:center}.main-container{padding:var(--spacing-md)}.form-grid-2,.form-grid-3,.form-grid-4{grid-template-columns:1fr}.action-bar{flex-direction:column}.action-bar .btn{width:100%}.print-controls{flex-wrap:wrap;width:calc(100% - 2rem);justify-content:center}}@media print{body{background:#fff!important;color:#000!important;-webkit-print-color-adjust:exact!important;print-color-adjust:exact!important}.header,.print-controls,.no-print{display:none!important}.print-view{min-height:auto!important;background:#fff!important}.invoice-page.print-a4{width:210mm!important;min-height:297mm!important;padding:15mm!important;margin:0!important;box-shadow:none!important;font-size:10pt!important}.invoice-page.print-a4 h1{font-size:16pt!important}.invoice-page.print-a4 h3,.invoice-page.print-a4 h4{font-size:10pt!important}.invoice-page.print-a4 .table th,.invoice-page.print-a4 .table td{padding:6px 8px!important;font-size:9pt!important}.invoice-page.print-a5{width:148mm!important;min-height:210mm!important;padding:10mm!important;margin:0!important;box-shadow:none!important;font-size:8pt!important}.invoice-page.print-a5 h1{font-size:12pt!important}.invoice-page.print-a5 h3,.invoice-page.print-a5 h4{font-size:8pt!important}.invoice-page.print-a5 .table th,.invoice-page.print-a5 .table td{padding:4px 6px!important;font-size:7pt!important}.invoice-page.print-a5 .invoice-parties{gap:10px!important}.invoice-page.print-a5 .invoice-party{padding:8px!important}.invoice-page.bw-mode *{color:#000!important}.invoice-page.bw-mode .table th{background:#eee!important;color:#000!important}.invoice-page.bw-mode .tax-summary-row{background:#f0f0f0!important}.invoice-page.bw-mode .invoice-header{border-bottom-color:#000!important}}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mt-sm{margin-top:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.text-center{text-align:center}.text-right{text-align:right}.text-muted{color:var(--text-muted)}.text-success{color:var(--success)}.text-error{color:var(--error)}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.text-lg{font-size:1.125rem}.font-bold{font-weight:700}.hidden{display:none}.checkbox-label,.radio-label{display:flex;align-items:center;gap:var(--spacing-sm);cursor:pointer;font-size:.9375rem}.checkbox-label input[type=checkbox],.radio-label input[type=radio]{width:18px;height:18px;accent-color:var(--primary);cursor:pointer}.control-group{display:flex;align-items:center;gap:var(--spacing-sm);background:var(--bg-tertiary);padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--radius-md)}.control-label{font-weight:500;color:var(--text-secondary);font-size:.875rem}.invoice-meta-form{width:100%}.meta-column{display:flex;flex-direction:column;gap:var(--spacing-md)}.jurisdiction-preview{padding:var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);font-weight:600;color:var(--primary);text-transform:uppercase;text-align:center}.declaration-box{padding:var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);font-size:.875rem;color:var(--text-secondary);font-style:italic}.tax-summary-row{background:#f8fafc!important}.tax-summary-row 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