*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:#f1f4f8;color:#17202d}button,input{font:inherit}button{cursor:pointer}.pos{min-height:100vh}.topbar{height:66px;background:#111827;color:#fff;display:flex;align-items:center;padding:0 20px;gap:28px}.pos-logo{font-size:26px;font-weight:900;letter-spacing:.5px;color:#17202d}.pos-logo span{color:#16b795}.pos-logo.small{font-size:19px;color:#fff}.top-tabs{display:flex;gap:3px;height:100%}.top-tabs button{border:0;background:transparent;color:#aeb8c8;padding:0 18px;font-weight:700}.top-tabs button.active{color:#fff;border-bottom:3px solid #21d0ad}.user-box{margin-left:auto;display:flex;gap:14px;align-items:center;font-size:13px}.user-box button{background:transparent;border:0;color:#aeb8c8}.sale-layout{display:grid;grid-template-columns:minmax(0,1fr) 420px;height:calc(100vh - 66px)}.catalog{padding:18px 20px;overflow:auto}.scan-line{height:55px;background:#fff;border:2px solid #19b999;border-radius:10px;display:flex;align-items:center;padding:0 14px;gap:10px;margin-bottom:13px}.scan-line span{font-size:10px;font-weight:900;color:#18a98c;letter-spacing:1px}.scan-line input{border:0;outline:0;margin:0;flex:1;font-size:17px}.scan-line b{font-size:18px;color:#8791a0}.catalog-tools input{width:100%;padding:12px 14px;border:1px solid #dce2e9;border-radius:9px;outline:0}.categories{display:flex;gap:7px;overflow:auto;padding:13px 0}.categories button{white-space:nowrap;border:1px solid #dce2e9;background:#fff;border-radius:20px;padding:8px 13px;color:#697587}.categories button.active{background:#17202d;color:#fff;border-color:#17202d}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}.product-card{min-height:140px;text-align:left;border:1px solid #e1e6ed;background:#fff;border-radius:12px;padding:14px;display:flex;flex-direction:column;transition:.15s;box-shadow:0 3px 8px #14233708}.product-card:hover{border-color:#19b999;transform:translateY(-1px)}.product-name{font-weight:800;line-height:1.3}.product-card strong{margin-top:auto;font-size:18px}.product-card small{color:#8791a0;margin-top:5px}.product-card em{font-style:normal;font-size:9px;color:#a3acb8;font-family:Consolas;margin-top:7px}.cart{background:#fff;border-left:1px solid #dde2e8;display:flex;flex-direction:column}.cart-head{padding:18px;border-bottom:1px solid #edf0f4;display:flex;justify-content:space-between;align-items:center}.cart-head h2{margin:0;font-size:20px}.cart-head span{font-size:12px;color:#8b95a4}.cart-head button{border:0;background:transparent;color:#d65353;font-size:12px}.cart-list{flex:1;overflow:auto;padding:8px 14px}.cart-empty{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#8993a2;text-align:center;padding:30px}.cart-empty div{font-size:40px;margin-bottom:12px}.cart-empty span{font-size:12px;margin-top:5px;max-width:230px}.cart-item{display:grid;grid-template-columns:1fr auto;gap:5px 10px;padding:13px 4px;border-bottom:1px solid #edf0f4}.cart-item>div:first-child{min-width:0}.cart-item b{display:block;font-size:13px}.cart-item small{display:block;color:#8a94a2;margin-top:4px}.cart-item>strong{grid-column:2;grid-row:1/3;align-self:center}.qty{display:flex;gap:7px;align-items:center}.qty button{width:25px;height:25px;border:1px solid #d9dee6;background:#fff;border-radius:5px}.qty b{min-width:18px;text-align:center}.cart-bottom{padding:17px;border-top:1px solid #dde2e8}.sum{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.sum span{font-weight:800;color:#7a8595}.sum b{font-size:26px}.shift-status{font-size:11px;padding:8px;border-radius:6px;margin-bottom:9px}.shift-status.open{background:#e9faf5;color:#0b9278}.shift-status.closed{background:#fff1f1;color:#c54d4d}.pay-btn{width:100%;border:0;background:#18b99c;color:#fff;border-radius:9px;padding:14px;font-weight:800;font-size:15px}.pay-btn:hover{background:#119f87}.pay-btn:disabled{opacity:.45;cursor:not-allowed}.global-error{position:fixed;z-index:20;top:76px;left:50%;transform:translate(-50%);background:#fff0f0;color:#bd4444;padding:11px 15px;border-radius:8px;box-shadow:0 8px 30px #00000026}.global-error button{border:0;background:transparent;margin-left:15px}.modal-back{position:fixed;z-index:30;top:0;right:0;bottom:0;left:0;background:rgba(13,20,30,.6);display:grid;place-items:center;padding:20px}.modal{background:#fff;border-radius:15px;position:relative;max-width:480px;width:100%;padding:25px;box-shadow:0 20px 60px #0000004d}.modal-x{position:absolute;right:12px;top:10px;border:0;background:transparent;font-size:24px}.checkout h2{margin-top:0}.checkout-total{text-align:center;font-size:36px;font-weight:900;margin:18px 0}.payment-tabs{display:flex;gap:7px;margin:12px 0}.payment-tabs button{flex:1;border:1px solid #dce1e8;background:#fff;padding:10px;border-radius:8px}.payment-tabs button.active{background:#17202d;color:#fff}.change{padding:12px;background:#edf9f6;border-radius:8px;margin:10px 0 14px;display:flex;justify-content:space-between}.receipt-paper{font-family:Arial,sans-serif;max-width:330px;margin:auto;text-align:center}.receipt-paper h2{margin:0}.receipt-paper>small{display:block;margin-top:5px;color:#777}.receipt-paper hr{border:0;border-top:1px dashed #999;margin:12px 0}.r-line{display:flex;justify-content:space-between;text-align:left;gap:10px;font-size:13px;margin:8px 0}.r-line span{flex:1}.r-line small{display:block;color:#777;margin-top:3px}.r-total{display:flex;justify-content:space-between;font-size:17px;font-weight:800}.r-info{text-align:left;font-size:12px;margin-top:5px}.receipt-paper p{margin-top:20px}.receipt-actions{display:flex;gap:8px;margin-top:20px}.receipt-actions button:last-child{border:1px solid #dce1e8;background:#fff;border-radius:9px;padding:12px;flex:1}.receipt-actions .pay-btn{flex:2}.shift-page,.receipts-page{padding:30px;max-width:1100px;margin:auto}.page-title{margin-bottom:20px}.page-title h1{margin:0 0 5px}.page-title p{margin:0;color:#8791a0}.shift-stats{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin-bottom:18px}.shift-stats>div{background:#fff;border:1px solid #e1e6ed;border-radius:12px;padding:18px}.shift-stats span{display:block;color:#7f8998;font-size:12px}.shift-stats b{font-size:21px;display:block;margin-top:6px}.shift-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.shift-card{background:#fff;border:1px solid #e1e6ed;border-radius:14px;padding:22px}.shift-card h2{margin-top:0}.close-card{border-color:#f0d5d5}.danger-btn{width:100%;background:#d85454;color:#fff;border:0;border-radius:9px;padding:13px;font-weight:800}.shift-icon{font-size:40px}.shift-card p{color:#7d8795}.receipts-page table{width:100%;border-collapse:collapse;background:#fff;border:1px solid #e1e6ed;border-radius:12px;overflow:hidden}.receipts-page th,.receipts-page td{padding:13px;text-align:left;border-bottom:1px solid #edf0f4;font-size:13px}.receipts-page th{color:#818b99;background:#fafbfc}.receipts-page td button{border:1px solid #d9e0e7;background:#fff;border-radius:6px;padding:7px 10px}.login{min-height:100vh;background:linear-gradient(135deg,#eefaf7,#f4f7fb);display:grid;place-items:center}.login-card{background:#fff;width:370px;padding:35px;border-radius:18px;box-shadow:0 20px 60px #14283c1f}.login-card h1{margin:8px 0 24px}.login-card small{display:block;text-align:center;color:#8c95a2;margin-top:10px}.login-card label{display:block;font-size:13px;color:#647083;margin-bottom:12px}.login-card input,.shift-card input{display:block;width:100%;padding:11px;margin-top:5px;border:1px solid #dce1e8;border-radius:8px}.error{background:#fff0f0;color:#c04444;padding:9px;border-radius:7px;margin:8px 0;font-size:13px}@media (max-width:950px){.sale-layout{grid-template-columns:1fr;height:auto}.cart{border-left:0;border-top:1px solid #ddd;min-height:450px}.shift-stats{grid-template-columns:1fr 1fr}.shift-grid{grid-template-columns:1fr}}@media (max-width:600px){.topbar{gap:10px;padding:0 10px}.top-tabs button{padding:0 7px;font-size:12px}.user-box span{display:none}.catalog{padding:12px}.product-grid{grid-template-columns:repeat(2,1fr)}.shift-page,.receipts-page{padding:15px}}.receipt-settings{margin:0 0 12px;display:flex;justify-content:flex-end}.receipt-settings label{font-size:12px;color:#6f7885;display:flex;align-items:center;gap:8px}.receipt-settings select{padding:7px 9px;border:1px solid #dce1e8;border-radius:7px}