:root{--primary: #0056D2;--primary-hover: #0044A5;--secondary: #E9ECEF;--text-main: #212529;--text-muted: #6C757D;--bg-main: #F8F9FA;--bg-card: #FFFFFF;--border: #DEE2E6;--danger: #DC3545;--success: #198754;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--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);--border-radius: 8px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-weight:600;color:var(--text-main);margin-bottom:.5rem}h2{font-size:1.5rem}h3{font-size:1.25rem}p{margin-bottom:1rem}.app-container{display:flex;min-height:100vh}.sidebar{width:260px;background-color:var(--bg-card);border-right:1px solid var(--border);display:flex;flex-direction:column}.sidebar-header{padding:1.5rem;border-bottom:1px solid var(--border)}.sidebar-header h2{font-size:1.125rem;margin:0;color:var(--primary)}.sidebar-nav{padding:1rem 0;display:flex;flex-direction:column;gap:.5rem}.nav-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1.5rem;border:none;background:none;width:100%;text-align:left;font-size:.95rem;color:var(--text-muted);font-weight:500;cursor:pointer;transition:all .2s ease}.nav-item:hover{background-color:var(--bg-main);color:var(--text-main)}.nav-item.active{background-color:#e6f0ff;color:var(--primary);border-right:3px solid var(--primary)}.main-content{flex:1;padding:2rem;overflow-y:auto}.view-container{max-width:1000px;margin:0 auto}.card{background:var(--bg-card);border-radius:var(--border-radius);box-shadow:var(--shadow-sm);padding:1.5rem;margin-bottom:2rem;border:1px solid var(--border)}.description{color:var(--text-muted);margin-bottom:1.5rem}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}.form-group.full-width{grid-column:1 / -1}.form-group label{display:block;font-size:.875rem;font-weight:500;margin-bottom:.5rem;color:var(--text-main)}.form-group small{display:block;font-size:.75rem;color:var(--text-muted);margin-top:.25rem}input,select{width:100%;padding:.625rem .75rem;border:1px solid var(--border);border-radius:6px;font-size:.95rem;font-family:inherit;transition:border-color .15s ease-in-out}input:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #0056d21a}button{cursor:pointer;font-family:inherit}.btn-primary{background-color:var(--primary);color:#fff;border:none;padding:.625rem 1.25rem;border-radius:6px;font-weight:500;font-size:.95rem;transition:background-color .2s;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn-primary:hover{background-color:var(--primary-hover)}.btn-secondary{background-color:var(--bg-card);color:var(--text-main);border:1px solid var(--border);padding:.625rem 1.25rem;border-radius:6px;font-weight:500;font-size:.95rem;transition:all .2s}.btn-secondary:hover{background-color:var(--bg-main)}.btn-text{background:none;border:none;color:var(--primary);font-size:.875rem;font-weight:500;padding:.25rem .5rem}.btn-text:hover{text-decoration:underline}.btn-text.danger{color:var(--danger)}.form-actions{display:flex;gap:1rem;justify-content:flex-end;margin-top:1rem}.list-container{background:var(--bg-card);border-radius:var(--border-radius);box-shadow:var(--shadow-sm);padding:1.5rem;border:1px solid var(--border)}.tenant-list{list-style:none;padding:0}.list-item{display:flex;justify-content:space-between;align-items:center;padding:1rem 0;border-bottom:1px solid var(--border)}.list-item:last-child{border-bottom:none}.item-details strong{display:block;font-size:1rem;margin-bottom:.25rem}.item-details span{color:var(--text-muted);font-size:.875rem}.empty-state,.warning{padding:2rem;text-align:center;color:var(--text-muted);background:var(--bg-main);border-radius:6px}.table-responsive{overflow-x:auto}.data-table{width:100%;border-collapse:collapse}.data-table th,.data-table td{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--border)}.data-table th{font-weight:600;color:var(--text-muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}.view-header{display:flex;justify-content:space-between;margin-bottom:2rem}.invoice-full-view{max-width:1000px;margin:0 auto}.invoice-page{background:#fff;margin:0 auto;padding:0 0 105mm;min-height:297mm;width:210mm;box-shadow:var(--shadow-md);position:relative;display:flex;flex-direction:column}.invoice-header,.invoice-details,.invoice-items{padding-left:20mm;padding-right:20mm}.invoice-header{display:flex;justify-content:space-between;padding-top:20mm;margin-bottom:20mm}.sender-info h1{font-size:1.5rem;color:#000;margin-bottom:.25rem}.sender-info p,.recipient-info p{color:#333;margin-bottom:.1rem;font-size:.9rem}.recipient-info{margin-top:10mm}.recipient-label{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}.recipient-info h2{font-size:1.1rem;margin-bottom:.25rem}.invoice-details{margin-bottom:15mm;display:flex;gap:2rem}.detail-row{display:flex;flex-direction:column}.detail-row .label{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;margin-bottom:.25rem}.detail-row .value{font-weight:600}.invoice-items{width:100%;margin-bottom:10mm;flex-grow:1}.invoice-items th{border-bottom:2px solid #000;color:#000}.invoice-items td{padding:1rem 0;border-bottom:1px solid var(--border)}.invoice-items .amount-col{text-align:right;width:150px}.invoice-items tfoot td{padding-top:1rem;border-bottom:none;font-size:1.1rem}.swiss-qr-section{height:105mm;width:210mm;border-top:1px dashed #ccc;position:absolute;bottom:0;left:0;page-break-inside:avoid}.qr-container svg{width:100%;height:100%;display:block}.preview-scale{transform-origin:top center;transform:scale(.6);margin-bottom:-400px}@media print{@page{size:A4;margin:0!important}html,body{margin:0!important;padding:0!important;width:210mm;height:auto;background:#fff}.no-print{display:none!important}.app-container,.main-content{display:block;height:auto;padding:0;margin:0;overflow:visible}.invoice-full-view{margin:0;max-width:none}.invoice-page{box-shadow:none;margin:0!important;padding:0!important;width:210mm;height:296mm;box-sizing:border-box;page-break-after:avoid;page-break-inside:avoid}.swiss-qr-section{position:relative;margin-top:auto;page-break-inside:avoid}.preview-scale{transform:none!important;margin-bottom:0!important}}