:root{color:#111827;background:#f8fafc;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input{font:inherit}button{min-height:44px;border:0;border-radius:8px;background:#0f172a;color:#fff;padding:0 16px;font-weight:800}button.secondary{background:#e2e8f0;color:#0f172a}button.danger{background:#b91c1c}button:disabled{cursor:not-allowed;opacity:.6}input{width:100%;min-height:44px;border:1px solid #cbd5e1;border-radius:8px;padding:10px 12px;background:#fff;color:#111827}.fileButton{display:inline-grid;min-height:44px;align-items:center;border-radius:8px;background:#e2e8f0;color:#0f172a;padding:0 16px;font-size:1rem;font-weight:800}.fileButton input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}label{display:grid;gap:6px;color:#334155;font-size:.92rem;font-weight:700}.appShell{width:min(100%,760px);margin:0 auto;padding:max(18px,env(safe-area-inset-top)) 16px max(24px,env(safe-area-inset-bottom))}.appHeader{display:flex;gap:16px;align-items:flex-start;justify-content:space-between;margin-bottom:18px}.eyebrow{margin:0 0 4px;color:#64748b;font-size:.78rem;font-weight:800;text-transform:uppercase}h1,h2,h3,p{margin-top:0}h1{margin-bottom:0;font-size:2rem;letter-spacing:0}h2{font-size:1.25rem}.officialLink{color:#0f172a;font-size:.82rem;font-weight:800;text-align:right}.tabs{display:grid;grid-template-columns:repeat(2,1fr);gap:6px;margin-bottom:16px}.tabs button{padding:0 8px;background:#e2e8f0;color:#0f172a}.tabs button.active{background:#0f172a;color:#fff}.screen,.authPanel{display:grid;gap:16px}.authPanel{background:#fff;border:1px solid #e2e8f0;border-radius:8px;padding:16px}.toolbar{display:flex;flex-wrap:wrap;gap:8px}.stickyToolbar{position:sticky;bottom:max(10px,env(safe-area-inset-bottom));z-index:2;padding:8px;border-radius:8px;background:#f8fafceb;backdrop-filter:blur(8px)}.cardList,.splitList,.formGrid{display:grid;gap:12px}.giftCard{display:flex;gap:14px;align-items:center;justify-content:space-between;border:1px solid #e2e8f0;border-radius:8px;background:#fff;padding:14px}.giftCard.zero{opacity:.62}.giftCard h2,.giftCard h3{margin-bottom:4px}.giftCard p{margin-bottom:3px}.cardAction{display:grid;gap:8px;justify-items:end;min-width:110px}.cardAction strong{font-size:1.1rem}.meta,.statusLine{color:#64748b;font-size:.88rem}.emptyState{border:1px dashed #94a3b8;border-radius:8px;padding:24px 16px;text-align:center}.fullWidth{width:100%}.toast{margin-bottom:14px;border-radius:8px;padding:12px;font-weight:800}.toast.success{background:#dcfce7;color:#14532d}.toast.error,.formError{background:#fee2e2;color:#7f1d1d}.toast.info{background:#dbeafe;color:#1e3a8a}.formError{border-radius:8px;padding:10px;font-weight:800}.scanner{display:grid;gap:10px;border:1px solid #e2e8f0;border-radius:8px;background:#fff;padding:12px}.editPanel{border:1px solid #e2e8f0;border-radius:8px;background:#fff;padding:14px}.scannerPreview{position:relative;overflow:hidden;border-radius:8px;background:#020617}.scanner video{width:100%;aspect-ratio:16 / 10;background:#020617;object-fit:cover}.scanGuide{position:absolute;left:8%;right:8%;top:38%;height:24%;border:2px solid #ffffff;border-radius:8px;box-shadow:0 0 0 999px #0206175c;pointer-events:none}.detailScreen{padding-bottom:16px}.balanceHero{display:grid;gap:6px;border-radius:8px;background:#0f172a;color:#fff;padding:18px;text-align:center}.balanceHero strong{font-size:clamp(2.4rem,12vw,4rem)}.balanceHero small,.balanceHero span{color:#cbd5e1}.barcodeFrame{display:grid;min-height:180px;place-items:center;overflow-x:auto;border:1px solid #cbd5e1;border-radius:8px;background:#fff;padding:16px}.barcodeFrame svg{width:min(100%,620px);height:auto}.barcodeOverlay{position:fixed;inset:0;z-index:10;display:grid;grid-template-rows:auto 1fr;gap:18px;align-items:center;background:#fff;padding:max(16px,env(safe-area-inset-top)) 16px max(18px,env(safe-area-inset-bottom))}.barcodeOverlayHeader{display:flex;gap:12px;align-items:center;justify-content:space-between}.barcodeOverlay .barcodeFrame{min-height:min(70vh,520px);border:0}.barcodeOverlay .barcodeFrame svg{width:min(96vw,920px)}.transaction{display:grid;gap:4px;border-bottom:1px solid #e2e8f0;padding:10px 0}.remaining{border-radius:8px;background:#0f172a;color:#fff;padding:14px;font-size:1.2rem;font-weight:900;text-align:center}.settings{align-items:start}.settingsInfo{display:grid;gap:10px}.settingsInfo details{border:1px solid #e2e8f0;border-radius:8px;background:#fff;padding:12px}.settingsInfo summary{cursor:pointer;color:#0f172a;font-weight:900}.settingsInfo p{margin:10px 0 0;color:#334155;font-size:.92rem}.settingsInfo a{color:#0f172a;font-weight:800}@media(max-width:520px){.appHeader,.giftCard{align-items:stretch;flex-direction:column}.officialLink,.cardAction{justify-items:stretch;text-align:left}.tabs{grid-template-columns:repeat(2,1fr)}}