:root{--primary-color: #2563eb;--primary-dark: #1e40af;--secondary-color: #10b981;--danger-color: #ef4444;--text-dark: #1f2937;--text-light: #6b7280;--bg-light: #f9fafb;--border-color: #e5e7eb;--shadow: 0 1px 3px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;color:var(--text-dark);background-color:var(--bg-light);line-height:1.6}#app{max-width:1400px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.app-header{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);color:#fff;padding:1.5rem 2rem;display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow)}.app-header h1{font-size:1.75rem;font-weight:700}.install-btn{background:#fff;color:var(--primary-color);border:none;padding:.5rem 1.5rem;border-radius:6px;font-weight:600;cursor:pointer;transition:transform .2s}.install-btn:hover{transform:scale(1.05)}.nav-tabs{display:flex;background:#fff;border-bottom:2px solid var(--border-color);overflow-x:auto}.tab-btn{flex:1;min-width:120px;padding:1rem 1.5rem;background:none;border:none;border-bottom:3px solid transparent;font-size:1rem;font-weight:500;color:var(--text-light);cursor:pointer;transition:all .3s;white-space:nowrap}.tab-btn:hover{background:var(--bg-light);color:var(--primary-color)}.tab-btn.active{color:var(--primary-color);border-bottom-color:var(--primary-color);font-weight:600}.main-content{flex:1;padding:2rem}.tab-content{display:none;animation:fadeIn .3s}.tab-content.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.toolbar{display:flex;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}.search-input{flex:1;min-width:250px;padding:.75rem 1rem;border:2px solid var(--border-color);border-radius:6px;font-size:1rem;transition:border-color .3s}.search-input:focus{outline:none;border-color:var(--primary-color)}.btn{padding:.75rem 1.5rem;border:none;border-radius:6px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s;white-space:nowrap}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow)}.btn-secondary{background:var(--text-light);color:#fff}.btn-secondary:hover{background:var(--text-dark)}.btn-success{background:var(--secondary-color);color:#fff}.btn-success:hover{background:#059669}.btn-icon{background:none;border:none;font-size:1.2rem;cursor:pointer;padding:.25rem .5rem;transition:transform .2s}.btn-icon:hover{transform:scale(1.2)}.table-container{background:#fff;border-radius:8px;box-shadow:var(--shadow);overflow:hidden}.inventory-table{width:100%;border-collapse:collapse}.inventory-table thead{background:var(--bg-light)}.inventory-table th{padding:1rem;text-align:left;font-weight:600;color:var(--text-dark);border-bottom:2px solid var(--border-color)}.inventory-table td{padding:1rem;border-bottom:1px solid var(--border-color)}.inventory-table tbody tr:hover{background:var(--bg-light)}.inventory-table code{background:var(--bg-light);padding:.25rem .5rem;border-radius:4px;font-family:Courier New,monospace;font-size:.9rem}.inventory-table .actions{display:flex;gap:.5rem}.empty-state{text-align:center;padding:3rem;color:var(--text-light);background:#fff;border-radius:8px;box-shadow:var(--shadow)}.scan-container{max-width:600px;margin:0 auto;background:#fff;padding:2rem;border-radius:8px;box-shadow:var(--shadow)}.scan-container h2{margin-bottom:1.5rem;text-align:center}.scan-result{margin-top:1.5rem;padding:1rem;border-radius:6px}.scan-success{background:#d1fae5;border:2px solid var(--secondary-color);padding:1.5rem;border-radius:8px}.scan-success h3{color:#065f46;margin-bottom:1rem}.scan-success p{margin:.5rem 0;color:#047857}.scan-not-found{background:#fee2e2;border:2px solid var(--danger-color);padding:1.5rem;border-radius:8px;text-align:center}.scan-not-found h3{color:#991b1b;margin-bottom:1rem}.scan-not-found p{color:#b91c1c;margin-bottom:1rem}.error{background:#fee2e2;color:#991b1b;padding:1rem;border-radius:6px;border-left:4px solid var(--danger-color)}.success{background:#d1fae5;color:#065f46;padding:1rem;border-radius:6px;border-left:4px solid var(--secondary-color)}.generate-container{background:#fff;padding:2rem;border-radius:8px;box-shadow:var(--shadow)}.generate-container h2,.form-group{margin-bottom:1.5rem}.form-group label{display:block;font-weight:600;margin-bottom:.5rem;color:var(--text-dark)}.item-select-list{max-height:300px;overflow-y:auto;border:2px solid var(--border-color);border-radius:6px;padding:1rem}.checkbox-label{display:flex;align-items:center;padding:.5rem;margin:.25rem 0;cursor:pointer;border-radius:4px;transition:background .2s}.checkbox-label:hover{background:var(--bg-light)}.checkbox-label input[type=checkbox]{margin-right:.75rem;width:18px;height:18px;cursor:pointer}.barcode-display{margin-top:2rem;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}.barcode-card{border:2px solid var(--border-color);border-radius:8px;padding:1rem;background:#fff;box-shadow:var(--shadow)}.barcode-info{margin-bottom:1rem}.barcode-info h4{color:var(--primary-color);margin-bottom:.5rem}.barcode-info p{margin:.25rem 0;font-size:.9rem;color:var(--text-light)}.barcode-card canvas{width:100%;height:auto}.import-container{max-width:600px;margin:0 auto;background:#fff;padding:2rem;border-radius:8px;box-shadow:var(--shadow)}.import-container h2{margin-bottom:1.5rem;color:var(--primary-color)}.import-container hr{margin:2rem 0;border:none;border-top:2px solid var(--border-color)}.upload-area{border:3px dashed var(--border-color);border-radius:8px;padding:2rem;text-align:center;margin-bottom:1rem;transition:all .3s}.upload-area:hover{border-color:var(--primary-color);background:var(--bg-light)}.file-input{display:none}.file-label{display:inline-block;padding:1rem 2rem;background:var(--primary-color);color:#fff;border-radius:6px;cursor:pointer;font-weight:600;transition:all .3s}.file-label:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow)}.file-name{margin-top:1rem;color:var(--text-light);font-style:italic}.modal{display:none;position:fixed;z-index:1000;left:0;top:0;width:100%;height:100%;background:#00000080;animation:fadeIn .3s}.modal-content{background:#fff;margin:2% auto;padding:2rem;width:90%;max-width:500px;max-height:90vh;overflow-y:auto;border-radius:12px;box-shadow:var(--shadow-lg);animation:slideDown .3s}@keyframes slideDown{0%{opacity:0;transform:translateY(-50px)}to{opacity:1;transform:translateY(0)}}.close{float:right;font-size:2rem;font-weight:700;color:var(--text-light);cursor:pointer;line-height:1;transition:color .3s}.close:hover{color:var(--danger-color)}.modal-content h2{margin-bottom:1.5rem;color:var(--primary-color)}.modal-content .form-group input,.modal-content .form-group textarea{width:100%;padding:.75rem;border:2px solid var(--border-color);border-radius:6px;font-size:1rem;font-family:inherit;transition:border-color .3s}.modal-content .form-group input:focus,.modal-content .form-group textarea:focus{outline:none;border-color:var(--primary-color)}.modal-actions{display:flex;gap:1rem;margin-top:1.5rem}.modal-actions .btn{flex:1}.toast{position:fixed;bottom:2rem;right:2rem;background:var(--text-dark);color:#fff;padding:1rem 1.5rem;border-radius:6px;box-shadow:var(--shadow-lg);opacity:0;transform:translateY(20px);transition:all .3s;z-index:2000}.toast.show{opacity:1;transform:translateY(0)}@media (max-width: 768px){.app-header{padding:1rem}.app-header h1{font-size:1.25rem}.main-content{padding:1rem}.toolbar{flex-direction:column}.search-input{width:100%}.inventory-table{font-size:.875rem}.inventory-table th,.inventory-table td{padding:.5rem}.tab-btn{padding:.75rem 1rem;font-size:.9rem}.barcode-display{grid-template-columns:1fr}.modal-content{margin:10% auto;width:95%}.toast{right:1rem;left:1rem;bottom:1rem}}.custom-badge{display:inline-block;background-color:var(--primary-color);color:#fff;font-size:.75rem;font-weight:700;padding:.125rem .375rem;border-radius:.25rem;margin-left:.5rem;vertical-align:middle}.custom-fields-container{margin-top:1rem;padding-top:1rem;border-top:2px dashed var(--border-color)}.custom-fields-header{margin-bottom:1rem}.custom-fields-header h3{color:var(--primary-color);font-size:1rem;font-weight:600;margin-bottom:.5rem}@media print{.app-header,.nav-tabs,.toolbar,.modal,.toast{display:none!important}body{background:#fff}.table-container{box-shadow:none}}