:root{--ink:#17233b;--muted:#758096;--accent:#176bff;--green:#18a875;--line:#e6eaf0;--surface:#fff}body{background:#f3f6fa;color:var(--ink);font-family:Inter,Segoe UI,sans-serif}.pos-shell{min-height:100vh}.pos-header{height:70px;padding:0 28px;background:#101a2e;color:white;display:flex;align-items:center;justify-content:space-between}.pos-header strong{font-size:20px;letter-spacing:.7px}.pos-header small{color:#aeb8c9;margin-left:10px}.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;margin-right:10px;background:var(--accent);border-radius:9px;font-weight:800}.shift{color:#cbd3df;font-size:14px}.shift span{display:inline-block;width:9px;height:9px;margin-right:7px;border-radius:50%;background:#20d48d}.pos-grid{min-height:calc(100vh - 70px);display:grid;grid-template-columns:1fr 430px}.catalog-panel{padding:24px}.search-row{display:flex;gap:10px;margin-bottom:20px}.search-row input{flex:1;border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-size:17px;outline:none}.search-row input:focus{border-color:var(--accent);box-shadow:0 0 0 3px #176bff18}.search-row button{padding:0 25px;border:0;border-radius:12px;background:var(--accent);color:white;font-weight:700}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}.product-card{min-height:150px;text-align:left;padding:18px;border:1px solid var(--line);border-radius:15px;background:white;display:flex;flex-direction:column;cursor:pointer;transition:.15s}.product-card:hover{transform:translateY(-2px);border-color:#b8cdf7;box-shadow:0 8px 28px #1c3d7012}.product-card span{font-weight:700;font-size:16px}.product-card small{color:var(--muted);margin-top:5px}.product-card strong{margin-top:auto;color:var(--accent);font-size:17px}.product-card em{color:var(--muted);font-size:12px;font-style:normal;margin-top:4px}.receipt-panel{background:var(--surface);border-left:1px solid var(--line);display:flex;flex-direction:column}.receipt-title{padding:22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.receipt-title h2{font-size:20px;margin:0}.receipt-title button{color:#d24a56;border:0;background:none}.cart{flex:1;padding:8px 22px;overflow:auto}.empty{color:var(--muted);text-align:center;margin:50px 0}.cart-line{padding:15px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:1fr auto 100px;align-items:center;gap:12px}.cart-line div:first-child{display:flex;flex-direction:column}.cart-line small{color:var(--muted);margin-top:3px}.cart-line>strong{text-align:right}.quantity{display:flex;align-items:center;gap:9px}.quantity button{width:28px;height:28px;border:1px solid var(--line);border-radius:7px;background:#f6f8fb}.totals{border-top:1px solid var(--line);padding:20px 22px}.totals>div{display:flex;justify-content:space-between}.grand-total{font-size:22px;margin:14px 0 18px}.grand-total strong{color:var(--accent)}.totals label{color:var(--muted);display:flex;flex-direction:column;gap:7px;font-size:13px}.totals select{padding:11px;border:1px solid var(--line);border-radius:9px;background:white;color:var(--ink)}.pay{width:100%;margin-top:15px;padding:16px;border:0;border-radius:11px;background:var(--green);color:white;font-size:17px;font-weight:800}.pay:disabled{opacity:.45}.message{min-height:22px;text-align:center;margin:10px 0 0;color:var(--green);font-weight:600}@media(max-width:900px){.pos-grid{grid-template-columns:1fr}.receipt-panel{border-left:0;min-height:500px}.pos-header small{display:none}}