@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap");:root{--primary:#4c669a;--primary-light:rgba(76,102,154,.1);--primary-hover:#3a5080;--primary-glow:rgba(76,102,154,.25);--success:#22c55e;--success-light:rgba(34,197,94,.1);--danger:#ef4444;--danger-light:rgba(239,68,68,.1);--warning:#f59e0b;--dark:#0f172a;--dark-2:#1e293b;--dark-3:#334155;--gray:#64748b;--gray-light:#94a3b8;--border:#e2e8f0;--border-light:#f1f5f9;--bg:#f8fafc;--surface:#fff;--surface-2:#f8fafc;--text:#0f172a;--text-2:#334155;--text-3:#64748b;--radius:12px;--radius-sm:8px;--radius-lg:20px;--radius-full:9999px;--shadow-sm:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);--shadow:0 4px 12px rgba(0,0,0,.08),0 2px 4px rgba(0,0,0,.04);--shadow-lg:0 10px 30px rgba(0,0,0,.12),0 4px 8px rgba(0,0,0,.06);--shadow-primary:0 4px 20px rgba(76,102,154,.3);--transition:0.2s cubic-bezier(0.4,0,0.2,1)}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;background:none}button,input,select,textarea{font-family:inherit}img{max-width:100%;height:auto}.app-container{display:flex;flex-direction:column;min-height:100vh}.page-content{flex:1 1;padding:24px 20px;max-width:900px;margin:0 auto;width:100%}.page-header{margin-bottom:28px}.page-title{font-size:1.6rem;font-weight:800;color:var(--dark);letter-spacing:-.02em}.page-subtitle{font-size:.875rem;color:var(--text-3);margin-top:4px}.navbar{background:var(--dark);border-bottom:1px solid hsla(0,0%,100%,.06);padding:0 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12px;border-radius:var(--radius-sm);font-size:.8rem;font-weight:500;color:hsla(0,0%,100%,.55);transition:var(--transition)}.nav-link:hover{background:hsla(0,0%,100%,.08);color:#fff}.nav-link.active{background:rgba(76,102,154,.3);color:var(--primary)}.nav-link svg{width:16px;height:16px}.card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm);overflow:hidden}.card-body{padding:20px}.card-header{padding:16px 20px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}.card-title{font-size:.95rem;font-weight:600;color:var(--dark)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:var(--radius);font-size:.875rem;font-weight:600;transition:var(--transition);cursor:pointer;border:none;white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--primary) 0,#6b82be 100%);color:#fff;box-shadow:var(--shadow-primary)}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,var(--primary-hover) 0,#5a71ad 100%);transform:translateY(-1px);box-shadow:0 6px 24px rgba(76,102,154,.4)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--surface);color:var(--text-2);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.btn-secondary:hover:not(:disabled){background:var(--bg);border-color:var(--primary);color:var(--primary)}.btn-danger{background:var(--danger-light);color:var(--danger);border:1px solid rgba(239,68,68,.2)}.btn-danger:hover:not(:disabled){background:var(--danger);color:#fff}.btn-icon{background:var(--primary-light);color:var(--primary);border:1px solid rgba(76,102,154,.15)}.btn-icon:hover:not(:disabled){background:var(--primary);color:#fff}.btn-full{width:100%}.btn-lg{padding:14px 24px;font-size:1rem}.btn-sm{padding:7px 14px;font-size:.8rem;border-radius:var(--radius-sm)}.primary-btn-wrap{padding:12px 16px;background:#fff;border-top:1px solid var(--border-light)}.primary-btn{width:100%;padding:15px;background:linear-gradient(135deg,var(--primary),#6b82be);color:#fff;border:none;border-radius:var(--radius);font-size:1rem;font-weight:700;display:flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;transition:var(--transition);box-shadow:var(--shadow-primary);letter-spacing:-.01em}.primary-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 8px 28px rgba(76,102,154,.45)}.primary-btn:active:not(:disabled){transform:translateY(0)}.primary-btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}.primary-btn .spinner{width:18px;height:18px;border:2px solid hsla(0,0%,100%,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear 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1;min-width:0}.cart-item-name{font-weight:600;font-size:.9rem;color:var(--dark);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cart-item-price{font-size:.8rem;color:var(--text-3);margin-top:2px;font-weight:500}.cart-item-total{font-weight:700;color:var(--primary);font-size:.95rem;min-width:70px;text-align:right}.product-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow-sm);padding:16px;display:flex;align-items:center;gap:14px;transition:var(--transition);animation:fadeIn .2s ease}.product-card:hover{border-color:rgba(76,102,154,.3);box-shadow:var(--shadow);transform:translateY(-1px)}.product-avatar{width:44px;height:44px;border-radius:10px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}.product-info{flex:1 1;min-width:0}.product-name{font-weight:600;font-size:.95rem;color:var(--dark)}.product-barcode{font-size:.75rem;color:var(--text-3);margin-top:2px;font-family:monospace}.product-price{font-weight:700;font-size:1rem;color:var(--primary);margin-right:8px}.product-actions{display:flex;gap:6px;align-items:center}.empty-state{flex-direction:column;padding:48px 24px;gap:12px;text-align:center}.empty-icon,.empty-state{display:flex;align-items:center;justify-content:center}.empty-icon{width:72px;height:72px;background:var(--bg);border-radius:50%;font-size:2rem;margin-bottom:4px}.empty-title{font-weight:700;font-size:1.1rem;color:var(--dark)}.empty-desc{font-size:.875rem;color:var(--text-3);max-width:260px;line-height:1.6}.summary-bar{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;box-shadow:var(--shadow-sm)}.summary-label{font-size:.75rem;font-weight:700;color:var(--text-3);text-transform:uppercase;letter-spacing:.08em}.summary-value{font-size:1.6rem;font-weight:900;color:var(--primary);letter-spacing:-.03em}.receipt-table{width:100%;border-collapse:collapse}.receipt-table th{padding:10px 14px;background:var(--bg);text-align:left;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);border-bottom:1px solid var(--border)}.receipt-table td:last-child,.receipt-table th:last-child{text-align:right}.receipt-table td{padding:14px;border-bottom:1px solid var(--border-light);font-size:.875rem;color:var(--text);vertical-align:middle}.receipt-table tr:last-child td{border-bottom:none}.receipt-table .total-row td{font-weight:700;color:var(--dark)}.settings-avatar{width:88px;height:88px;border-radius:50%;background:linear-gradient(135deg,var(--primary),#7b8fca);display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:900;color:#fff;letter-spacing:-2px;box-shadow:var(--shadow-primary);margin:0 auto 12px}.settings-shop-name{font-size:1.2rem;font-weight:800;text-align:center;text-transform:uppercase;letter-spacing:-.01em}.settings-section{margin-bottom:28px}.settings-section-label{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3);margin-bottom:8px;padding:0 4px}.settings-list{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;box-shadow:var(--shadow-sm)}.settings-item{display:flex;align-items:center;gap:14px;padding:16px;border-bottom:1px solid var(--border-light);cursor:pointer;transition:var(--transition);text-decoration:none;color:inherit}.settings-item:last-child{border-bottom:none}.settings-item:hover{background:var(--bg)}.settings-icon{width:40px;height:40px;border-radius:var(--radius-sm);background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary);flex-shrink:0}.settings-item-info{flex:1 1}.settings-item-title{font-weight:600;font-size:.9rem}.settings-item-desc{font-size:.75rem;color:var(--text-3);margin-top:2px}.settings-chevron{color:var(--border)}.search-bar{position:relative;margin-bottom:20px}.search-bar svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--gray-light);width:18px;height:18px}.search-input{width:100%;padding:11px 14px 11px 40px;border:1.5px solid var(--border);border-radius:var(--radius);font-size:.9rem;background:var(--surface);outline:none;transition:var(--transition)}.search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.pos-layout{display:flex;flex-direction:column;height:calc(100vh - 60px)}.pos-top{padding:16px 20px;background:var(--surface);border-bottom:1px solid var(--border)}.pos-body{flex:1 1;overflow-y:auto;padding:16px 20px 90px}.pos-footer{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--border);z-index:50}.scanner-overlay{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.85);display:flex;flex-direction:column;align-items:center;justify-content:center;animation:fadeIn .2s ease}.scanner-box{background:#000;width:min(420px,95vw);border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.8)}.scanner-header{padding:16px 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video{width:100%;height:100%;object-fit:cover}.scanner-crosshair{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}.crosshair-box{width:200px;height:200px;border-radius:16px;position:relative}.corner{position:absolute;width:28px;height:28px}.corner:after,.corner:before{content:"";position:absolute;background:#4ade80;border-radius:2px}.corner-tl:before{top:0;left:0;width:100%;height:4px}.corner-tl:after{top:0;left:0;width:4px;height:100%}.corner-tr:before{top:0;right:0;width:100%;height:4px}.corner-tr:after{top:0;right:0;width:4px;height:100%}.corner-bl:before{bottom:0;left:0;width:100%;height:4px}.corner-bl:after{bottom:0;left:0;width:4px;height:100%}.corner-br:before{bottom:0;right:0;width:100%;height:4px}.corner-br:after{bottom:0;right:0;width:4px;height:100%}.scan-line{position:absolute;left:0;right:0;top:0;height:2px;background:linear-gradient(90deg,transparent,#4ade80,transparent);animation:scanLine 2s ease-in-out infinite}.scanner-footer{padding:14px 20px;background:var(--dark-2);text-align:center}.scanner-hint{font-size:.8rem;color:hsla(0,0%,100%,.5)}.scanner-manual{padding:14px 20px;background:var(--dark-3);display:flex;gap:10px}.scanner-manual input{flex:1 1;padding:9px 12px;border-radius:var(--radius-sm);background:hsla(0,0%,100%,.1);border:1px solid hsla(0,0%,100%,.15);color:#fff;font-size:.85rem;outline:none}.scanner-manual input::placeholder{color:hsla(0,0%,100%,.3)}.scanner-manual input:focus{border-color:#4ade80}.scanner-manual button{padding:9px 14px;background:var(--primary);color:#fff;border-radius:var(--radius-sm);font-weight:600;font-size:.8rem;cursor:pointer;transition:var(--transition)}.scanner-manual button:hover{background:var(--primary-hover)}.print-receipt{display:none}@media print{body>*{display:none!important}.print-receipt{display:block!important;width:80mm;margin:0;padding:0;font-family:Courier 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var(--border)}.qr-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3)}.qr-amount{font-size:1.3rem;font-weight:900;color:var(--dark)}.toast-wrap{position:fixed;bottom:90px;left:50%;transform:translateX(-50%);z-index:300;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}.toast{padding:10px 18px;border-radius:var(--radius-full);font-size:.85rem;font-weight:600;color:#fff;box-shadow:var(--shadow-lg);animation:slideUp .3s ease,fadeOut .3s ease 2.5s forwards;white-space:nowrap;pointer-events:auto}.toast-success{background:var(--success)}.toast-error{background:var(--danger)}.toast-info{background:var(--primary)}.divider{height:1px;background:var(--border-light);margin:20px 0}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.section-title{font-size:1rem;font-weight:700;color:var(--dark)}.section-count{font-size:.8rem;color:var(--text-3);background:var(--bg);padding:3px 8px;border-radius:var(--radius-full);border:1px solid var(--border)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translate(-50%,20px)}to{opacity:1;transform:translate(-50%)}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}@keyframes spin{to{transform:rotate(1turn)}}@keyframes scanLine{0%,to{top:0}50%{top:100%}}@keyframes 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