:root{
  color-scheme:light dark;
  --bg:#f5f6f8;--surface:#ffffff;--soft:#f8fafc;--text:#111827;--muted:#6b7280;--line:#e5e7eb;
  --accent:#111827;--accent-soft:#eef0f3;--green:#0f9f6e;--green-soft:#e9f9f2;--orange:#f59e0b;--orange-soft:#fff7e8;
  --red:#dc2626;--red-soft:#fff1f2;--shadow:0 10px 28px rgba(17,24,39,.08);--radius:22px;--nav:72px;
}
@media(prefers-color-scheme:dark){
  :root{--bg:#0a0d12;--surface:#121722;--soft:#171e2a;--text:#f9fafb;--muted:#a8b0bf;--line:#283241;--accent:#f9fafb;--accent-soft:#202938;--green-soft:#0d241c;--orange-soft:#2b1d08;--red-soft:#2a1215;--shadow:0 12px 32px rgba(0,0,0,.3)}
}
*{box-sizing:border-box} html,body{margin:0;min-height:100%} body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
button,input{font:inherit} button{cursor:pointer;touch-action:manipulation} input{width:100%;min-height:46px;border:1px solid var(--line);border-radius:13px;padding:10px 12px;background:var(--soft);color:var(--text);outline:none} input:focus{border-color:var(--accent)}
.app{width:min(100%,920px);min-height:100dvh;margin:0 auto;padding-bottom:calc(var(--nav) + env(safe-area-inset-bottom))}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:max(18px,env(safe-area-inset-top)) 16px 14px;position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(14px)}
.topbar h1,.page-head h2,.section-head h2,.modal h2{margin:0;letter-spacing:-.03em}.topbar h1{font-size:1.45rem}.subtitle{margin:3px 0 0;color:var(--muted);font-size:.9rem}.eyebrow{margin:0 0 4px;font-size:.66rem;font-weight:900;letter-spacing:.12em;color:var(--muted)}.offline-badge{font-size:1.1rem;color:#16a34a}.offline-badge.offline{color:#f59e0b}
main{padding:0 12px 18px}.view{display:none}.view.active{display:block}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.sale-grid{display:grid;gap:12px}.catalog-panel,.cart-panel{padding:14px}.section-head,.page-head,.modal-head,.cart-summary,.change-row,.checkout-total{display:flex;align-items:center;justify-content:space-between;gap:12px}.page-head{align-items:flex-end;padding:12px 3px 14px}.page-head p:not(.eyebrow){margin:4px 0 0;color:var(--muted);font-size:.86rem}.page-head h2{font-size:1.5rem}
.chips,.option-type-tabs{display:flex;gap:8px;overflow-x:auto;padding:10px 0 2px;scrollbar-width:none}.chips::-webkit-scrollbar,.option-type-tabs::-webkit-scrollbar{display:none}.chip,.filter-btn{border:1px solid var(--line);background:var(--soft);color:var(--text);border-radius:999px;padding:9px 13px;white-space:nowrap;font-weight:800}.chip.active,.filter-btn.active{background:var(--accent);color:var(--bg);border-color:var(--accent)}
.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:12px}.sale-product{min-height:104px;border:1px solid var(--line);border-radius:18px;background:var(--surface);color:var(--text);padding:14px;text-align:left;display:flex;flex-direction:column;justify-content:space-between;gap:10px}.sale-product strong{font-size:1rem;line-height:1.2}.sale-product small{color:var(--muted)}.sale-product .price{font-weight:950;font-size:1.05rem}.sale-product:active{transform:scale(.985)}
.cart-list{display:grid;gap:9px;margin-top:10px}.cart-item{border:1px solid var(--line);border-radius:17px;padding:12px;background:var(--soft)}.cart-main{display:flex;justify-content:space-between;gap:12px}.cart-name{font-weight:850}.cart-meta{color:var(--muted);font-size:.76rem;margin-top:3px}.cart-line-total{font-weight:900;white-space:nowrap}.cart-controls{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:10px}.qty{display:grid;grid-template-columns:42px 42px 42px;align-items:center;border:1px solid var(--line);border-radius:13px;overflow:hidden}.qty button{height:40px;border:0;background:transparent;color:var(--text);font-size:1.2rem;font-weight:900}.qty span{text-align:center;font-weight:900}.remove-btn{width:40px;height:40px;border-radius:12px;border:1px solid color-mix(in srgb,var(--red) 20%,var(--line));background:var(--red-soft);color:var(--red);font-weight:900}
.cart-summary{margin-top:12px;padding-top:12px;border-top:1px solid var(--line)}.cart-summary span{display:block;color:var(--muted);font-size:.8rem}.cart-summary strong{display:block;font-size:1.55rem;margin-top:2px}.counter{display:grid;place-items:center;min-width:34px;height:34px;padding:0 9px;border-radius:999px;background:var(--accent-soft);font-weight:900}
.primary-btn,.secondary-btn,.text-btn{border-radius:13px;font-weight:850;min-height:44px}.primary-btn{border:1px solid var(--accent);background:var(--accent);color:var(--bg);padding:10px 15px}.secondary-btn{border:1px solid var(--line);background:var(--soft);color:var(--text);padding:10px 14px}.text-btn{border:0;background:transparent;color:var(--text);padding:8px}.danger{color:var(--red)}.full{width:100%}.button-row{display:flex;gap:8px;flex-wrap:wrap}.file-btn{display:inline-flex;align-items:center;justify-content:center}
.stack{display:grid;gap:10px}.list-card{padding:13px 14px}.list-card .top{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}.list-title{font-weight:900}.list-meta{margin-top:4px;color:var(--muted);font-size:.78rem}.list-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}.mini-btn{border:1px solid var(--line);background:var(--soft);color:var(--text);border-radius:10px;padding:8px 10px;font-weight:800}.mini-btn.danger{background:var(--red-soft);color:var(--red)}.badge{display:inline-block;padding:3px 7px;border-radius:999px;font-size:.64rem;font-weight:900;background:var(--soft);color:var(--muted)}.badge.on{background:var(--green-soft);color:var(--green)}.badge.off{background:var(--red-soft);color:var(--red)}.badge.type{background:var(--orange-soft);color:var(--orange)}
.tools-card{padding:12px;margin-bottom:12px}.metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}.metric{padding:14px}.metric span{display:block;color:var(--muted);font-size:.78rem}.metric strong{display:block;margin-top:4px;font-size:1.3rem}.padded{padding:14px}.sales-list{padding:0 14px 14px}.sale-row{display:flex;justify-content:space-between;gap:10px;padding:12px 0;border-top:1px solid var(--line)}.sale-row:first-child{border-top:0}.sale-row strong{white-space:nowrap}
.form-card,.backup-card{padding:16px}.form-card label,.modal label{display:block;font-size:.82rem;font-weight:800;margin:12px 0}.form-card label input,.modal label input{margin-top:6px}.backup-card{margin-top:12px}.backup-card p{color:var(--muted);font-size:.88rem;line-height:1.45}.helper{display:block;color:var(--muted);font-size:.75rem;font-weight:500;margin-top:5px}.field-title{font-size:.8rem;font-weight:850;margin:12px 0 8px}.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.check-card,.radio-row{display:flex!important;align-items:center;gap:8px;margin:0!important;padding:10px;border:1px solid var(--line);border-radius:12px;background:var(--soft)}.check-card input,.radio-row input,.switch-row input{width:20px;min-height:20px;margin:0!important}.switch-row{display:flex!important;align-items:center;justify-content:space-between;gap:14px}.switch-row span{font-weight:800}fieldset{border:1px solid var(--line);border-radius:14px;padding:10px;margin:12px 0}legend{padding:0 6px;color:var(--muted);font-size:.76rem;font-weight:850}
.empty-state{text-align:center;padding:28px 12px;color:var(--muted)}.empty-state strong{display:block;color:var(--text);margin-bottom:4px}.empty-state.compact{padding:18px 8px}
.bottom-nav{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:min(100%,920px);height:calc(var(--nav) + env(safe-area-inset-bottom));padding:6px 5px env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:color-mix(in srgb,var(--surface) 95%,transparent);backdrop-filter:blur(18px);border-top:1px solid var(--line);z-index:40}.nav-btn{position:relative;border:0;background:transparent;color:var(--muted);display:grid;place-items:center;align-content:center;gap:2px;border-radius:12px}.nav-btn span{font-size:1.1rem}.nav-btn small{font-size:.65rem;font-weight:800}.nav-btn.active{color:var(--text)}.nav-btn.active:before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:28px;height:3px;border-radius:999px;background:var(--text)}
.modal{width:min(calc(100% - 24px),540px);max-height:calc(100dvh - 24px);overflow:auto;border:1px solid var(--line);border-radius:24px;padding:18px 18px max(18px,env(safe-area-inset-bottom));background:var(--surface);color:var(--text);box-shadow:0 28px 80px rgba(0,0,0,.34)}.modal::backdrop{background:rgba(0,0,0,.58);backdrop-filter:blur(3px)}.icon-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--soft);color:var(--text);font-size:1.35rem}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}.picker-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.picker-btn{min-height:82px;border:1px solid var(--line);border-radius:17px;background:var(--soft);color:var(--text);padding:12px;font-weight:900;text-align:left}.picker-btn small{display:block;color:var(--muted);margin-top:4px}.error-text{min-height:18px;color:var(--red);font-size:.8rem;font-weight:800}
.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:12px 0}.method-btn{min-height:48px;border:1px solid var(--line);border-radius:13px;background:var(--soft);color:var(--text);font-weight:850}.method-btn.active{background:var(--green);color:#fff;border-color:var(--green)}.checkout-total,.change-row{padding:13px;border:1px solid var(--line);border-radius:14px;background:var(--soft)}.checkout-total strong{font-size:1.2rem}.success{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;margin:0 auto 10px;background:var(--green-soft);color:var(--green);font-size:2rem;font-weight:900}.receipt-modal{text-align:center}.receipt{text-align:left;background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:12px;margin:14px 0}.receipt-row{display:flex;justify-content:space-between;gap:10px;margin:7px 0}.toast{position:fixed;left:50%;top:max(14px,env(safe-area-inset-top));transform:translate(-50%,-12px);opacity:0;pointer-events:none;background:var(--text);color:var(--bg);padding:10px 14px;border-radius:999px;font-size:.82rem;font-weight:850;z-index:90;transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(min-width:760px){main{padding-inline:18px}.sale-grid{grid-template-columns:1.15fr .85fr;align-items:start}.cart-panel{position:sticky;top:94px}.product-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.metric-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:360px){.product-grid,.picker-grid,.check-grid{grid-template-columns:1fr}.nav-btn small{font-size:.58rem}}