:root{--ink: #14171C;--ink-soft: #4A5058;--paper: #FAFAF8;--paper-dim: #F0F0EC;--accent: #00B899;--accent-dark: #00876F;--danger: #E5484D;--border: #E4E4E0;--cat-1: #E07A5F;--cat-2: #E3A008;--cat-3: #6A9C78;--cat-4: #3D8FB0;--cat-5: #8E6C9C;--cat-6: #B79A6B;--font-display: "Space Grotesk", sans-serif;--font-body: "Inter", sans-serif}*{box-sizing:border-box}body{margin:0;font-family:var(--font-body);background:var(--paper-dim);color:var(--ink);-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--ink)}.login-card{background:var(--paper);border-radius:16px;padding:48px 40px;width:100%;max-width:360px;box-shadow:0 20px 60px #0000004d}.login-card h1{font-family:var(--font-display);font-size:28px;margin:0 0 4px}.login-card p{color:var(--ink-soft);margin:0 0 28px;font-size:14px}.login-card input{width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:10px;font-size:15px;margin-bottom:12px}.login-card button{width:100%;padding:14px;border:none;border-radius:10px;background:var(--accent);color:#fff;font-weight:600;font-size:15px;margin-top:8px;transition:background .15s}.login-card button:hover{background:var(--accent-dark)}.login-error{color:var(--danger);font-size:13px;margin:0 0 12px}.pos-screen{display:grid;grid-template-columns:1fr 380px;height:100vh}.catalog{display:flex;flex-direction:column;overflow:hidden}.catalog-header{padding:20px 24px 12px;display:flex;justify-content:space-between;align-items:center}.catalog-header h2{font-family:var(--font-display);font-size:20px;margin:0}.logout-btn{background:none;border:none;color:var(--ink-soft);font-size:13px;text-decoration:underline}.category-tabs{display:flex;gap:8px;padding:0 24px 16px;overflow-x:auto}.category-tab{border:none;border-radius:20px;padding:8px 16px;font-size:13px;font-weight:600;background:var(--paper);color:var(--ink-soft);white-space:nowrap;border:1px solid var(--border)}.category-tab.active{background:var(--ink);color:#fff;border-color:var(--ink)}.product-grid{flex:1;overflow-y:auto;padding:4px 24px 24px;display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;align-content:start}.product-card{background:var(--paper);border:1px solid var(--border);border-radius:14px;padding:16px 14px;text-align:left;display:flex;flex-direction:column;gap:8px;min-height:100px;transition:transform .1s,box-shadow .1s}.product-card:hover{transform:translateY(-2px);box-shadow:0 6px 16px #00000014}.product-card:active{transform:translateY(0)}.product-card .chip{width:28px;height:4px;border-radius:2px}.product-card .name{font-weight:600;font-size:14px;line-height:1.3}.product-card .price{font-family:var(--font-display);font-weight:600;color:var(--accent-dark);font-size:15px;margin-top:auto}.receipt-panel{background:var(--ink);color:#fff;display:flex;flex-direction:column}.receipt-paper{background:var(--paper);color:var(--ink);margin:20px 20px 0;border-radius:4px 4px 0 0;flex:1;display:flex;flex-direction:column;overflow:hidden;position:relative}.receipt-header{padding:20px 20px 12px;border-bottom:1px dashed var(--border)}.receipt-header .store-name{font-family:var(--font-display);font-weight:700;font-size:16px}.receipt-header .meta{font-size:11px;color:var(--ink-soft);margin-top:2px;font-family:Courier New,monospace}.receipt-items{flex:1;overflow-y:auto;padding:8px 20px;font-family:Courier New,monospace;font-size:13px}.receipt-empty{color:var(--ink-soft);text-align:center;padding:40px 20px;font-family:var(--font-body);font-size:13px}.receipt-line{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px dotted var(--border);gap:8px}.receipt-line .qty-controls{display:flex;align-items:center;gap:6px}.receipt-line .qty-controls button{border:1px solid var(--border);background:#fff;border-radius:4px;width:20px;height:20px;font-size:12px;line-height:1}.receipt-line .line-total{font-weight:600}.receipt-line .remove-btn{border:none;background:none;color:var(--danger);font-size:11px}.receipt-totals{padding:14px 20px;border-top:1px dashed var(--border);font-family:Courier New,monospace;font-size:13px}.receipt-totals .row{display:flex;justify-content:space-between;padding:3px 0}.receipt-totals .row.total{font-family:var(--font-display);font-size:20px;font-weight:700;padding-top:10px;margin-top:6px;border-top:1px solid var(--ink)}.receipt-tear{height:12px;margin:0 20px;background:linear-gradient(135deg,var(--paper) 50%,transparent 50%) 0 0/10px 12px repeat-x,linear-gradient(-135deg,var(--paper) 50%,transparent 50%) 0 0/10px 12px repeat-x}.pay-section{padding:20px}.pay-btn{width:100%;padding:18px;border:none;border-radius:12px;background:var(--accent);color:#fff;font-family:var(--font-display);font-weight:700;font-size:17px;transition:background .15s}.pay-btn:hover:not(:disabled){background:var(--accent-dark)}.pay-btn:disabled{background:#3a4048;color:#6b7178;cursor:not-allowed}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:var(--ink);color:#fff;padding:14px 24px;border-radius:10px;font-size:14px;box-shadow:0 10px 30px #0000004d}