:root{--bg-main: #0f172a;--bg-surface: #1e293b;--bg-card: #334155;--text-main: #f8fafc;--text-muted: #94a3b8;--primary: #0ea5e9;--primary-hover: #0284c7;--accent-green: #10b981;--accent-amber: #f59e0b;--accent-red: #ef4444;--border-color: #475569;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px}*{box-sizing:border-box;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{background-color:var(--bg-main);color:var(--text-main);height:100vh;overflow:hidden}.pos-app{display:flex;flex-direction:column;height:100vh}.top-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background-color:var(--bg-surface);border-bottom:1px solid var(--border-color)}.brand{display:flex;align-items:center;gap:10px}.logo-badge{background:linear-gradient(135deg,#0ea5e9,#38bdf8);color:#fff;font-weight:800;padding:4px 8px;border-radius:var(--radius-sm);font-size:14px}.brand h1{font-size:18px;font-weight:700}.brand .tag{font-size:12px;color:var(--text-muted);font-weight:400}.status-indicators{display:flex;gap:16px;font-size:13px;color:var(--text-muted)}.indicator-item{display:flex;align-items:center;gap:6px}.dot{width:8px;height:8px;border-radius:50%}.dot.green{background-color:var(--accent-green)}.dot.amber{background-color:var(--accent-amber)}.dot.red{background-color:var(--accent-red)}.header-actions{display:flex;align-items:center;gap:12px}.staff-tag{font-size:13px;background:var(--bg-card);padding:6px 12px;border-radius:var(--radius-sm)}.pos-workspace{display:grid;grid-template-columns:1fr 440px;flex:1;overflow:hidden}.catalog-section{display:flex;flex-direction:column;padding:16px;border-right:1px solid var(--border-color);overflow-y:auto}.search-bar-container{display:flex;position:relative;margin-bottom:14px}.search-input{width:100%;padding:14px 18px;font-size:16px;background-color:var(--bg-surface);border:2px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-main);outline:none;transition:border-color .2s}.search-input:focus{border-color:var(--primary)}.btn-icon{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:16px}.category-pills{display:flex;gap:8px;margin-bottom:16px;overflow-x:auto}.pill{padding:8px 16px;font-size:13px;background-color:var(--bg-surface);border:1px solid var(--border-color);color:var(--text-muted);border-radius:20px;cursor:pointer;white-space:nowrap}.pill.active{background-color:var(--primary);color:#fff;border-color:var(--primary);font-weight:600}.catalog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;overflow-y:auto;padding-bottom:20px}.product-card{background-color:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:14px;display:flex;flex-direction:column;justify-content:space-between;cursor:pointer;transition:transform .1s,border-color .2s}.product-card:hover{border-color:var(--primary);transform:translateY(-2px)}.card-title{font-size:14px;font-weight:600;margin-bottom:6px;line-height:1.3}.card-sku{font-size:12px;color:var(--text-muted);margin-bottom:10px}.card-footer{display:flex;align-items:center;justify-content:space-between;margin-top:10px}.card-price{font-size:16px;font-weight:700;color:var(--text-main)}.stock-tag{font-size:11px;padding:3px 8px;border-radius:var(--radius-sm);background:#064e3b;color:#6ee7b7;font-weight:600}.stock-tag.low{background:#78350f;color:#fde68a}.stock-tag.out{background:#7f1d1d;color:#fca5a5}.cart-section{display:flex;flex-direction:column;background-color:var(--bg-surface);height:100%}.cart-header{padding:14px 18px;border-bottom:1px solid var(--border-color)}.cart-title-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.cart-title-row h2{font-size:18px;font-weight:700}.cart-status-badge{font-size:12px;padding:3px 10px;border-radius:var(--radius-sm);background:#0284c7;color:#fff;font-weight:600}.customer-row{display:flex;justify-content:space-between;align-items:center;background:var(--bg-main);padding:8px 12px;border-radius:var(--radius-sm)}.customer-info{font-size:13px;color:var(--text-muted)}.cart-lines-container{flex:1;overflow-y:auto;padding:14px 18px;display:flex;flex-direction:column;gap:12px}.empty-cart-message{text-align:center;color:var(--text-muted);margin-top:60px;font-size:14px}.cart-line-item{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:12px;display:flex;flex-direction:column;gap:8px}.line-top{display:flex;justify-content:space-between;align-items:flex-start}.line-info h4{font-size:14px;font-weight:600;line-height:1.3}.line-info .line-meta{font-size:12px;color:var(--text-muted)}.line-bottom{display:flex;justify-content:space-between;align-items:center}.qty-control{display:flex;align-items:center;gap:6px}.qty-btn{width:32px;height:32px;border-radius:var(--radius-sm);background-color:var(--bg-surface);border:1px solid var(--border-color);color:var(--text-main);font-size:16px;font-weight:700;cursor:pointer}.qty-display{font-size:15px;font-weight:700;min-width:30px;text-align:center}.line-pricing{text-align:right}.original-price{font-size:12px;color:var(--text-muted);text-decoration:line-through}.final-price{font-size:16px;font-weight:700;color:var(--text-main)}.tier-discount-badge{display:inline-block;font-size:11px;padding:2px 6px;border-radius:4px;background-color:#064e3b;color:#34d399;font-weight:600;margin-top:4px}.cart-totals{padding:14px 18px;background-color:var(--bg-main);border-top:1px solid var(--border-color)}.total-row{display:flex;justify-content:space-between;font-size:14px;margin-bottom:6px;color:var(--text-muted)}.total-row.discount-row{color:var(--accent-green);font-weight:600}.total-row.grand-total-row{font-size:20px;font-weight:800;color:var(--text-main);margin-top:8px;padding-top:8px;border-top:1px dashed var(--border-color)}.cart-action-bar{display:grid;grid-template-columns:80px 120px 1fr;gap:10px;padding:14px 18px;border-top:1px solid var(--border-color)}.btn{padding:12px 16px;font-size:14px;font-weight:600;border-radius:var(--radius-md);border:none;cursor:pointer;transition:background-color .2s;text-align:center}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-secondary{background-color:var(--bg-card);color:var(--text-main)}.btn-warning{background-color:#78350f;color:#fde68a}.btn-danger{background-color:#7f1d1d;color:#fca5a5}.btn-small{padding:6px 12px;font-size:12px}.btn-large{font-size:16px;font-weight:800}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000}.modal-overlay.hidden{display:none}.modal-card{background-color:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;width:480px;max-width:90vw}.modal-card h3{font-size:18px;margin-bottom:8px}.modal-desc{font-size:13px;color:var(--text-muted);margin-bottom:16px;line-height:1.4}.form-group{margin-bottom:14px}.form-group label{display:block;font-size:12px;color:var(--text-muted);margin-bottom:6px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.form-input,.form-select{width:100%;padding:10px 12px;background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-main);outline:none}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.handoff-card{text-align:center}.handoff-spinner{width:48px;height:48px;border:4px solid var(--border-color);border-top-color:var(--primary);border-radius:50%;margin:0 auto 16px;animation:spin 1s linear infinite}.handoff-amount{font-size:32px;font-weight:800;color:var(--primary);margin:10px 0}@keyframes spin{to{transform:rotate(360deg)}}