:root{--accent: #2563eb;--accent-dark: #1d4ed8;--text: #1f2937;--muted: #6b7280;--border: #e5e7eb;--header-bg: #f3f4f6;--row-alt: #fafafa;--danger: #dc2626;--bg: #ffffff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,Roboto,Arial,sans-serif;font-size:14px}.app{max-width:1000px;margin:0 auto;padding:16px;min-height:calc(100vh - 32px);display:flex;flex-direction:column}.app-header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding-bottom:12px;margin-bottom:16px}.app-title{font-size:18px;font-weight:600;margin:0;letter-spacing:.02em}.tabs{display:flex;gap:8px}.tab-button{padding:8px 16px;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:4px;cursor:pointer;font-size:14px}.tab-button.active{background:var(--accent);color:#fff;border-color:var(--accent)}.card{border:1px solid var(--border);border-radius:6px;padding:20px;background:var(--bg)}.section-title{font-size:16px;font-weight:600;margin:0 0 12px}.invoice-meta{color:var(--muted);margin-bottom:12px;font-size:13px}.form-row{display:flex;gap:16px;margin-bottom:12px}.form-field{flex:1;display:flex;flex-direction:column;gap:4px}.form-field label{font-size:12px;color:var(--muted)}input,select{padding:8px 10px;border:1px solid var(--border);border-radius:4px;font-size:14px;font-family:inherit;color:var(--text);background:var(--bg)}input:focus,select:focus{outline:none;border-color:var(--accent)}.search-block{margin-bottom:16px;position:relative}.search-block label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}.search-block input{width:100%}.search-input-wide{width:100%;margin-bottom:12px}.search-hint{font-size:12px;color:var(--muted);margin-top:4px}.search-results{list-style:none;margin:4px 0 0;padding:0;border:1px solid var(--border);border-radius:4px;max-height:240px;overflow-y:auto;position:absolute;background:var(--bg);width:100%;z-index:10}.search-results li{display:flex;gap:12px;padding:8px 10px;cursor:pointer;border-bottom:1px solid var(--border)}.search-results li:hover{background:var(--header-bg)}.search-results li:last-child{border-bottom:none}.part-number{font-weight:600;min-width:90px}.muted{color:var(--muted);margin-left:auto}.data-table{width:100%;border-collapse:collapse;margin-top:8px}.data-table th{background:var(--header-bg);text-align:left;padding:8px 10px;font-size:12px;color:var(--muted);font-weight:600;border-bottom:1px solid var(--border)}.data-table td{padding:8px 10px;border-bottom:1px solid var(--border)}.data-table tbody tr:nth-child(2n){background:var(--row-alt)}.empty-row{text-align:center;color:var(--muted);padding:20px}.qty-input{width:60px}.totals-block{margin-top:16px;max-width:260px;margin-left:auto}.totals-row{display:flex;justify-content:space-between;padding:4px 0}.totals-final{border-top:1px solid var(--border);font-weight:700;margin-top:4px;padding-top:8px}.btn{padding:10px 16px;border-radius:4px;border:1px solid transparent;cursor:pointer;font-size:14px;font-weight:600}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-dark)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{background:var(--bg);border-color:var(--border);color:var(--text)}.btn-block{width:100%;margin-top:16px}.btn-link{background:none;border:none;color:var(--accent);cursor:pointer;font-size:13px;padding:0}.btn-link-danger{color:var(--danger)}.button-row{display:flex;gap:12px;margin-top:12px}.error-banner{background:#fef2f2;color:var(--danger);border:1px solid #fecaca;border-radius:4px;padding:8px 12px;margin:12px 0;font-size:13px}.confirmation-box{text-align:center;padding:20px 0}.confirmation-title{font-size:18px;font-weight:700;color:#16a34a}.login-card{max-width:340px;margin:40px auto}.inventory-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.filters-row{display:flex;gap:8px;align-items:center;margin-bottom:12px;flex-wrap:wrap}.invoice-filters{justify-content:flex-start;align-items:end}.date-filter{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted)}.invoice-report-table{font-size:12px}.pagination-row{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:13px;color:var(--muted)}.pagination-buttons{display:flex;gap:12px;align-items:center}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:50}.modal{background:var(--bg);border-radius:6px;padding:24px;width:520px;max-width:92vw;max-height:90vh;overflow-y:auto}.app-footer{margin-top:auto;padding-top:16px;text-align:center;font-size:12px;color:var(--muted);border-top:1px solid var(--border)}.print-only{display:none}@media print{@page{size:A4;margin:.8cm .6cm 1.2cm}.no-print{display:none!important}.print-only{display:block!important}body{font-size:12pt}.printable-invoice{padding:0}.invoice-print-table{width:100%;border-collapse:collapse;margin:0}.invoice-company-header{text-align:center;line-height:1.5;padding:6px 0}.invoice-company-name{font-size:18pt;font-weight:700}.invoice-title-row{text-align:center;font-size:16pt;font-weight:700;letter-spacing:.08em;padding:4px 0}.invoice-detail-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:4px 0 8px;font-size:10pt}.print-table{width:100%;border-collapse:collapse;margin:12px 0}.print-table th,.print-table td{border-bottom:1px solid #000;padding:4px 6px;text-align:left}.print-table thead th{background:#fff}.print-table tfoot td{border-bottom:none;font-weight:500}.print-total-label{text-align:right;font-weight:700}.print-total{font-weight:700;font-size:14pt}.print-thanks{text-align:center;font-style:italic;padding-top:12px}}