:root{--bg:#0e1420;--panel:#151d2c;--panel2:#1b2638;--line:#2a374d;--text:#f4f7fb;--muted:#98a5b8;--accent:#62e6b5;--accent2:#8da8ff;--danger:#ff7181}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 15% 0,#1d2a45 0,transparent 36%),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}.topbar{height:84px;display:flex;align-items:center;justify-content:space-between;padding:0 30px;border-bottom:1px solid var(--line);background:#111927e8}.eyebrow{font-size:11px;letter-spacing:.16em;color:var(--muted);font-weight:700}.topbar h1{margin:3px 0 0;font-size:22px}.offline{font-size:13px;color:var(--accent);display:flex;align-items:center;gap:8px}.offline span{width:8px;height:8px;background:var(--accent);border-radius:50%;box-shadow:0 0 12px var(--accent)}.app-shell{max-width:1500px;margin:auto;padding:22px 30px}.tabs{display:flex;gap:8px;margin-bottom:20px}.tab{background:transparent;border:1px solid transparent;color:var(--muted);padding:11px 19px;border-radius:10px;font-size:14px;font-weight:700;cursor:pointer}.tab.active{color:var(--text);background:var(--panel2);border-color:var(--line)}.tab b{background:#2d3b55;padding:2px 7px;border-radius:20px;margin-left:6px;font-size:11px}.panel{display:none}.active-panel{display:block}.sales-grid{display:grid;grid-template-columns:minmax(0,1fr) 27%;gap:20px}.catalog,.cart,.stock-list,.receipts-list{background:#121a28aa;border:1px solid var(--line);border-radius:16px;padding:20px}.section-head,.cart-head,.dialog-head{display:flex;align-items:center;justify-content:space-between}.section-head h2,.cart-head h2{margin:3px 0 18px;font-size:21px}.category-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.category{border:1px solid var(--line);background:var(--panel);color:var(--muted);border-radius:999px;padding:8px 13px;cursor:pointer}.category.active{color:var(--bg);background:var(--accent);border-color:var(--accent)}.products{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:13px}.product{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:13px;overflow:hidden;cursor:pointer;transition:.16s}.product:hover{transform:translateY(-2px);border-color:#597096}.product-img{height:142px;background:linear-gradient(135deg,#273652,#1b2638);display:flex;align-items:center;justify-content:center;font-size:42px;color:#7787a2;background-size:cover;background-position:center}.product-info{padding:12px}.product-name{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.product-meta{display:flex;justify-content:space-between;align-items:center;margin-top:9px}.price{font-weight:800;color:var(--accent);font-size:16px}.stock-badge{font-size:11px;color:var(--muted)}.custom-btn{position:absolute;top:9px;right:9px;border:0;background:#101724cc;color:#fff;border-radius:8px;padding:6px 8px;font-size:12px;cursor:pointer}.cart{display:flex;flex-direction:column;min-height:540px}.cart-head{align-items:flex-start}.cart-head h2{margin-bottom:8px}.icon-btn{border:0;background:transparent;color:var(--muted);font-size:26px;line-height:1;cursor:pointer}.cart-items{flex:1;overflow:auto}.empty{text-align:center;color:var(--muted);padding:55px 10px}.cart-item{display:grid;grid-template-columns:1fr auto;gap:8px;padding:13px 0;border-bottom:1px solid var(--line)}.cart-item-title{font-weight:700}.cart-item-sub{color:var(--muted);font-size:12px;margin-top:4px}.qty{display:flex;gap:6px;align-items:center}.qty button{border:1px solid var(--line);background:var(--panel2);color:var(--text);width:27px;height:27px;border-radius:7px;cursor:pointer}.cart-bottom{border-top:1px solid var(--line);padding-top:16px}.total{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;color:var(--muted)}.total strong{font-size:23px;color:var(--text)}button{font:inherit}.primary{border:0;background:var(--accent);color:#07130f;border-radius:9px;padding:11px 16px;font-weight:800;cursor:pointer}.primary:hover{filter:brightness(1.06)}.wide{width:100%;padding:14px}.ghost{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:9px;padding:10px 13px;cursor:pointer}.stock-list{padding:0;overflow:hidden}.stock-row{display:grid;grid-template-columns:58px 1fr 120px 110px 100px;gap:14px;align-items:center;padding:13px 18px;border-bottom:1px solid var(--line)}.stock-row:last-child{border-bottom:0}.thumb{width:48px;height:48px;border-radius:8px;background:#26344d center/cover;display:flex;align-items:center;justify-content:center}.muted{color:var(--muted);font-size:13px}.row-actions{display:flex;gap:7px;justify-content:flex-end}.danger{color:var(--danger);background:transparent;border:0;cursor:pointer}.receipt{border-bottom:1px solid var(--line);padding:15px 0}.receipt:last-child{border:0}.receipt-head{display:flex;justify-content:space-between;font-weight:700}.receipt-lines{color:var(--muted);font-size:13px;margin-top:7px}.receipt-total{color:var(--accent);font-weight:800}.dialog-head{margin-bottom:17px}.dialog-head h2{margin:0;font-size:20px}dialog{border:1px solid var(--line);border-radius:16px;background:var(--panel);color:var(--text);width:min(460px,calc(100% - 30px));padding:22px;box-shadow:0 30px 90px #0009}dialog::backdrop{background:#020611b8}label{display:block;color:var(--muted);font-size:13px;margin:12px 0}input{display:block;width:100%;margin-top:6px;padding:11px 12px;border-radius:8px;border:1px solid var(--line);background:#0e1624;color:var(--text);font-size:15px}input:focus{outline:2px solid #62e6b555;border-color:var(--accent)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.photo-label small{display:block;margin-top:7px;color:#78869b}.photo-preview{height:130px;border-radius:10px;background:#0e1624 center/cover no-repeat;display:none}.dialog-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:20px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);background:#f4f7fb;color:#0d1420;padding:11px 16px;border-radius:9px;font-weight:700;opacity:0;pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}@media(max-width:900px){.topbar{padding:0 17px}.app-shell{padding:16px}.sales-grid{grid-template-columns:1fr}.cart{min-height:300px}.stock-row{grid-template-columns:48px 1fr auto}.stock-row .muted,.stock-row .row-actions{grid-column:auto}.stock-row .stock-price{display:none}}@media(max-width:520px){.products{grid-template-columns:repeat(2,minmax(0,1fr))}.product-img{height:110px}.catalog,.cart{padding:14px}.topbar{height:72px}}