Datasets:

ShivankXD
/

stasis-synthetic-data

{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Build a polished component composition example for a booking system. Focus on slot-driven article frame with independently styled header and footer; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns slot-driven article frame with independently styled header and footer into a real booking system surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function BookingComponentCompositionStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const slots = { header: \"Evidence\", body: \"Read the signal before changing it.\", footer: \"Updated now\" };\n  return <main className=\"app\"><header><p className=\"eyebrow\">booking system / component composition</p><h1>slot-driven article frame with independently styled header and footer</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><article><header><p className=\"eyebrow\">{slots.header}</p><h2>Composable article frame</h2></header><p>{slots.body}</p><footer>{slots.footer}</footer></article></div><aside className=\"rail\"><p className=\"eyebrow\">Field context</p><dl><div><dt>Signal</dt><dd>Clear</dd></div><div><dt>Owner</dt><dd>Mira</dd></div></dl></aside></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><blockquote className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></form></div></section></figure></nav></article></footer></blockquote><nav className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></section></aside></figure></div></form></article></blockquote></nav><blockquote className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></footer></article></figure></aside></form></div></section></blockquote><section className=\"signature-card\"><p>Keyboard hint</p><kbd>R</kbd><span> opens the focused review action.</span></section><blockquote className=\"signature-card\"><p>Good interfaces let supporting evidence stay quiet until the moment it becomes useful.</p><footer>Field principle</footer></blockquote><figure className=\"signature-card\"><figcaption>Reading cadence</figcaption><div className=\"bars\"><span/><span/><span/><span/></div></figure><nav className=\"signature-card\" aria-label=\"Study sequence\"><ol><li>Arrive</li><li>Inspect</li><li>Decide</li></ol></nav></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fb718522,transparent 28rem),#17111a;color:#fff4fa;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fb7185;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#d6afc7; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#291a28;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fb7185;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fb7185; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#291a28;color:#fff4fa; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Explain and implement a polished custom hooks example for a travel and hospitality brand. Focus on debounced asynchronous lookup hook with cancellation; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns debounced asynchronous lookup hook with cancellation into a real travel and hospitality brand surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function TravelCustomHooksStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const deferredQuery = useDeferredValue(query); const matching = useMemo(() => items.filter((item) => item.label.toLowerCase().includes(deferredQuery.toLowerCase())), [deferredQuery]);\n  return <main className=\"app\"><header><p className=\"eyebrow\">travel and hospitality brand / custom hooks</p><h1>debounced asynchronous lookup hook with cancellation</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><label>Search <input value={query} onChange={(event) => setQuery(event.target.value)} /></label><ul>{matching.map((item) => <li key={item.id}>{item.label}</li>)}</ul></section></div><figure className=\"chart\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Review trend\"><polyline points=\"4,72 48,54 94,61 140,25 188,42 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Evidence gets stronger as the decision narrows.</figcaption></figure></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><nav className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></div></footer></figure></blockquote></section></article></form></nav><div className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></article></section></form></blockquote></figure></footer></nav></div><nav className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></article></blockquote></div></form></footer></figure></section></nav><nav className=\"signature-card\" aria-label=\"Study sequence\"><ol><li>Arrive</li><li>Inspect</li><li>Decide</li></ol></nav><form className=\"signature-card\"><fieldset><legend>Quick calibration</legend><label>Mode<select defaultValue=\"focused\"><option value=\"focused\">Focused</option><option value=\"broad\">Broad</option></select></label></fieldset></form><figure className=\"signature-card\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Signal rises over review moments\"><polyline points=\"4,72 48,54 94,63 140,27 188,39 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Confidence strengthens after each useful pass.</figcaption></figure><section className=\"signature-card\"><p>Release confidence</p><progress value=\"78\" max=\"100\">78%</progress><output>78%</output></section></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fda4af22,transparent 28rem),#20112e;color:#fff7fe;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fda4af;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#d7b8e6; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#351b4d;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fda4af;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fda4af; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#351b4d;color:#fff7fe; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Improve this pattern by implementing a polished custom hooks example for a museum collection archive. Focus on persisted preference hook with storage-event synchronization; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns persisted preference hook with storage-event synchronization into a real museum collection archive surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function MuseumCustomHooksStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  useEffect(() => { const saved = localStorage.getItem(\"view-density\"); if (saved) setDensity(saved); }, []); useEffect(() => { localStorage.setItem(\"view-density\", density); }, [density]);\n  return <main className=\"app\"><header><p className=\"eyebrow\">museum collection archive / custom hooks</p><h1>persisted preference hook with storage-event synchronization</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><p className=\"eyebrow\">Persisted density</p><button onClick={() => setDensity(density === \"compact\" ? \"comfortable\" : \"compact\")}>{density}</button></section></div><footer className=\"action-bar\"><p>Working state stays visible.</p><button onClick={() => setActive(\"shared\")}>Share review</button></footer></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><div className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></nav></article></form></figure></section></footer></blockquote></div><blockquote className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></section></nav></div></form></article></figure></aside></blockquote><section className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></footer></form></div></article></nav></aside></section><section className=\"signature-card\"><p>Release confidence</p><progress value=\"78\" max=\"100\">78%</progress><output>78%</output></section><section className=\"signature-card\"><p aria-live=\"polite\">Saved state is visible and non-disruptive.</p><output>Last saved just now</output></section><section className=\"signature-card\"><ul><li>Capture the signal</li><li>Make the owner visible</li><li>Close the loop</li></ul></section><section className=\"signature-card\"><p>Keyboard hint</p><kbd>R</kbd><span> opens the focused review action.</span></section></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#a78bfa22,transparent 28rem),#10101f;color:#f5f3ff;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#a78bfa;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#bcb8df; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#20203a;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#a78bfa;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#a78bfa; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#20203a;color:#f5f3ff; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Translate this UI brief into a polished context providers example for a admin operations panel. Focus on split state and dispatch contexts for a workflow board; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns split state and dispatch contexts for a workflow board into a real admin operations panel surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function AdminContextProvidersStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const workspace = useMemo(() => ({ active, setActive }), [active]);\n  return <main className=\"app\"><header><p className=\"eyebrow\">admin operations panel / context providers</p><h1>split state and dispatch contexts for a workflow board</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><WorkspaceContext.Provider value={workspace}><button onClick={() => workspace.setActive(\"review\")}>Set provider state</button><p>Context state: {workspace.active}</p></WorkspaceContext.Provider></section></div><aside className=\"rail\"><p className=\"eyebrow\">Field context</p><dl><div><dt>Signal</dt><dd>Clear</dd></div><div><dt>Owner</dt><dd>Mira</dd></div></dl></aside></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><footer className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></article></aside></div></figure></section></form></nav></footer><blockquote className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></article></div></aside></section></form></figure></nav></blockquote><form className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></figure></blockquote></section></aside></footer></article></div></form><section className=\"signature-card\"><p>Release confidence</p><progress value=\"78\" max=\"100\">78%</progress><output>78%</output></section><nav className=\"signature-card\" aria-label=\"Study sequence\"><ol><li>Arrive</li><li>Inspect</li><li>Decide</li></ol></nav><figure className=\"signature-card\"><figcaption>Reading cadence</figcaption><div className=\"bars\"><span/><span/><span/><span/></div></figure><figure className=\"signature-card\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Signal rises over review moments\"><polyline points=\"4,72 48,54 94,63 140,27 188,39 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Confidence strengthens after each useful pass.</figcaption></figure></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#bef26422,transparent 28rem),#071b16;color:#effff6;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#bef264;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#a8c8b7; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#103128;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#bef264;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#bef264; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#103128;color:#effff6; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Show the architecture for a polished context providers example for a fitness and wellness app. Focus on permission guard provider with explicit denied fallback; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns permission guard provider with explicit denied fallback into a real fitness and wellness app surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function FitnessContextProvidersStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const canPublish = active !== \"locked\";\n  return <main className=\"app\"><header><p className=\"eyebrow\">fitness and wellness app / context providers</p><h1>permission guard provider with explicit denied fallback</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><p>Publishing is {canPublish ? \"available\" : \"locked\"}.</p><button disabled={!canPublish}>Publish update</button></section></div><figure className=\"chart\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Review trend\"><polyline points=\"4,72 48,54 94,61 140,25 188,42 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Evidence gets stronger as the decision narrows.</figcaption></figure></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><nav className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></figure></div></footer></article></section></aside></form></nav><form className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></section></div></nav></footer></article></aside></form><nav className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></article></section></aside></form></footer></figure></nav><article className=\"signature-card\"><header><p className=\"eyebrow\">Material note</p><h3>A deliberate pause</h3></header><p>Contrast is a relationship between weight, rhythm, and proximity.</p></article><section className=\"signature-card\"><ul><li>Capture the signal</li><li>Make the owner visible</li><li>Close the loop</li></ul></section><nav className=\"signature-card\" aria-label=\"Study sequence\"><ol><li>Arrive</li><li>Inspect</li><li>Decide</li></ol></nav><blockquote className=\"signature-card\"><p>Good interfaces let supporting evidence stay quiet until the moment it becomes useful.</p><footer>Field principle</footer></blockquote></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fdba7422,transparent 28rem),#221511;color:#fff8f2;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fdba74;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#d8b9a6; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#3b241a;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fdba74;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fdba74; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#3b241a;color:#fff8f2; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Build a polished performance example for a civic permits service. Focus on memoized row surface with stable per-item callbacks; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns memoized row surface with stable per-item callbacks into a real civic permits service surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function CivicPerformanceStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const visible = useMemo(() => items.filter((item) => item.label.includes(query) || !query), [items, query]); const selectItem = useCallback((id: string) => setActive(id), []);\n  return <main className=\"app\"><header><p className=\"eyebrow\">civic permits service / performance</p><h1>memoized row surface with stable per-item callbacks</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><p className=\"eyebrow\">Memoized review rows</p><ul>{visible.map((item) => <li key={item.id}><button onClick={() => selectItem(item.id)}>{item.label}</button></li>)}</ul></section></div><footer className=\"action-bar\"><p>Working state stays visible.</p><button onClick={() => setActive(\"shared\")}>Share review</button></footer></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><article className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></aside></footer></blockquote></div></form></nav></figure></article><section className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></div></blockquote></aside></nav></footer></figure></form></section><article className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></div></section></footer></aside></figure></blockquote></nav></article><section className=\"signature-card\"><p>Evidence coverage</p><meter min=\"0\" max=\"100\" value=\"84\">84%</meter><small>Four strong sources</small></section><section className=\"signature-card\"><table><caption>Review ledger</caption><thead><tr><th>Signal</th><th>Read</th></tr></thead><tbody><tr><th>Evidence</th><td>Clear</td></tr><tr><th>Risk</th><td>Low</td></tr></tbody></table></section><figure className=\"signature-card\"><figcaption>Reading cadence</figcaption><div className=\"bars\"><span/><span/><span/><span/></div></figure><details className=\"signature-card\"><summary>Why this detail matters</summary><p>Supporting information stays available without becoming the primary reading path.</p></details></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#67e8f922,transparent 28rem),#07111f;color:#dff8ff;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#67e8f9;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#8ba9bc; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#0d1b2d;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#67e8f9;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#67e8f9; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#0d1b2d;color:#dff8ff; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Explain and implement a polished performance example for a content platform. Focus on useMemo-derived grouped report with transition-based filtering; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns useMemo-derived grouped report with transition-based filtering into a real content platform surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function ContentPerformanceStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const grouped = useMemo(() => Object.groupBy(items, (item) => item.group), [items]); const [isPending, startTransition] = useTransition();\n  return <main className=\"app\"><header><p className=\"eyebrow\">content platform / performance</p><h1>useMemo-derived grouped report with transition-based filtering</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><button onClick={() => startTransition(() => setQuery(query === \"\" ? \"priority\" : \"\"))}>Filter without blocking</button><p>{isPending ? \"Updating view\" : Object.keys(grouped).length + \" groups\"}</p></section></div><aside className=\"rail\"><p className=\"eyebrow\">Field context</p><dl><div><dt>Signal</dt><dd>Clear</dd></div><div><dt>Owner</dt><dd>Mira</dd></div></dl></aside></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><form className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></footer></aside></figure></section></blockquote></div></nav></form><aside className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></section></figure></footer></blockquote></form></div></article></aside><figure className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></div></blockquote></article></section></nav></form></aside></figure><dialog className=\"signature-card\" open><p>Review checkpoint</p><button type=\"button\">Acknowledge</button></dialog><blockquote className=\"signature-card\"><p>Good interfaces let supporting evidence stay quiet until the moment it becomes useful.</p><footer>Field principle</footer></blockquote><footer className=\"signature-card\"><p>Edited with care</p><a href=\"#next\">Continue to next move</a></footer><section className=\"signature-card\"><p>Keyboard hint</p><kbd>R</kbd><span> opens the focused review action.</span></section></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fbbf2422,transparent 28rem),#091426;color:#f5f8ff;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fbbf24;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#afc0dc; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#112342;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fbbf24;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fbbf24; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#112342;color:#f5f8ff; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Improve this pattern by implementing a polished controlled forms example for a creative portfolio network. Focus on cross-field password confirmation validation; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns cross-field password confirmation validation into a real creative portfolio network surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function CreativeControlledFormsStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const passwordsMatch = query.length === 0 || query === confirm; const [confirm, setConfirm] = useState(\"\");\n  return <main className=\"app\"><header><p className=\"eyebrow\">creative portfolio network / controlled forms</p><h1>cross-field password confirmation validation</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><label>Password <input value={query} onChange={(event) => setQuery(event.target.value)} /></label><label>Confirm <input value={confirm} onChange={(event) => setConfirm(event.target.value)} /></label><output>{passwordsMatch ? \"Passwords agree\" : \"Passwords must match\"}</output></section></div><figure className=\"chart\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Review trend\"><polyline points=\"4,72 48,54 94,61 140,25 188,42 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Evidence gets stronger as the decision narrows.</figcaption></figure></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><div className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></article></aside></nav></figure></blockquote></footer></form></div><nav className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></form></figure></article></blockquote></aside></div></footer></nav><nav className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></footer></aside></section></form></article></figure></blockquote></nav><article className=\"signature-card\"><time dateTime=\"2026-07-21\">21 July</time><h3>Recent handoff</h3><p>A concise trace gives the next collaborator enough context.</p></article><section className=\"signature-card\"><table><caption>Review ledger</caption><thead><tr><th>Signal</th><th>Read</th></tr></thead><tbody><tr><th>Evidence</th><td>Clear</td></tr><tr><th>Risk</th><td>Low</td></tr></tbody></table></section><section className=\"signature-card\"><ul><li>Capture the signal</li><li>Make the owner visible</li><li>Close the loop</li></ul></section><figure className=\"signature-card\"><figcaption>Reading cadence</figcaption><div className=\"bars\"><span/><span/><span/><span/></div></figure></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#5eead422,transparent 28rem),#111817;color:#f0fffb;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#5eead4;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#a6c5bd; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#1d2b29;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#5eead4;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#5eead4; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#1d2b29;color:#f0fffb; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Translate this UI brief into a polished controlled forms example for a research collaboration lab. Focus on multi-step form with persisted intermediate state; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns multi-step form with persisted intermediate state into a real research collaboration lab surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function ResearchControlledFormsStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const [step, setStep] = useState(1); useEffect(() => { sessionStorage.setItem(\"draft-step\", String(step)); }, [step]);\n  return <main className=\"app\"><header><p className=\"eyebrow\">research collaboration lab / controlled forms</p><h1>multi-step form with persisted intermediate state</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><p>Step {step} of 3</p><button onClick={() => setStep(Math.min(3, step + 1))}>Continue</button><progress value={step} max=\"3\" /></section></div><footer className=\"action-bar\"><p>Working state stays visible.</p><button onClick={() => setActive(\"shared\")}>Share review</button></footer></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><div className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></nav></section></aside></article></footer></figure></blockquote></div><div className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></footer></nav></figure></form></article></section></div><figure className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></section></form></div></article></footer></blockquote></nav></figure><footer className=\"signature-card\"><p>Edited with care</p><a href=\"#next\">Continue to next move</a></footer><section className=\"signature-card\"><ul><li>Capture the signal</li><li>Make the owner visible</li><li>Close the loop</li></ul></section><nav className=\"signature-card\" aria-label=\"Study sequence\"><ol><li>Arrive</li><li>Inspect</li><li>Decide</li></ol></nav><section className=\"signature-card\"><p>Evidence coverage</p><meter min=\"0\" max=\"100\" value=\"84\">84%</meter><small>Four strong sources</small></section></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fb718522,transparent 28rem),#17111a;color:#fff4fa;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fb7185;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#d6afc7; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#291a28;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fb7185;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fb7185; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#291a28;color:#fff4fa; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Show the architecture for a polished uncontrolled forms example for a developer tool. Focus on FormData submission with server-friendly field names; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns FormData submission with server-friendly field names into a real developer tool surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function DeveloperUncontrolledFormsStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const formRef = useRef<HTMLFormElement>(null); const submitUncontrolled = (event: React.FormEvent<HTMLFormElement>) => { event.preventDefault(); setNotice(String(new FormData(event.currentTarget).get(\"note\") ?? \"Saved\")); };\n  return <main className=\"app\"><header><p className=\"eyebrow\">developer tool / uncontrolled forms</p><h1>FormData submission with server-friendly field names</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><form ref={formRef} onSubmit={submitUncontrolled}><label>Note <input name=\"note\" defaultValue=\"Evidence checked\" /></label><button>Save FormData</button><output>{notice}</output></form></div><aside className=\"rail\"><p className=\"eyebrow\">Field context</p><dl><div><dt>Signal</dt><dd>Clear</dd></div><div><dt>Owner</dt><dd>Mira</dd></div></dl></aside></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><figure className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></footer></aside></section></article></form></nav></blockquote></figure><article className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></figure></nav></section></form></aside></div></footer></article><blockquote className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></div></form></article></footer></section></aside></figure></blockquote><figure className=\"signature-card\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Signal rises over review moments\"><polyline points=\"4,72 48,54 94,63 140,27 188,39 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Confidence strengthens after each useful pass.</figcaption></figure><form className=\"signature-card\"><fieldset><legend>Quick calibration</legend><label>Mode<select defaultValue=\"focused\"><option value=\"focused\">Focused</option><option value=\"broad\">Broad</option></select></label></fieldset></form><section className=\"signature-card\"><table><caption>Review ledger</caption><thead><tr><th>Signal</th><th>Read</th></tr></thead><tbody><tr><th>Evidence</th><td>Clear</td></tr><tr><th>Risk</th><td>Low</td></tr></tbody></table></section><details className=\"signature-card\"><summary>Why this detail matters</summary><p>Supporting information stays available without becoming the primary reading path.</p></details></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fda4af22,transparent 28rem),#20112e;color:#fff7fe;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fda4af;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#d7b8e6; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#351b4d;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fda4af;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fda4af; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#351b4d;color:#fff7fe; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Build a polished render props example for a media and streaming service. Focus on pointer-inspection render prop for a small chart; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns pointer-inspection render prop for a small chart into a real media and streaming service surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function MediaRenderPropsStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const [pointer, setPointer] = useState({ x: 0, y: 0 });\n  return <main className=\"app\"><header><p className=\"eyebrow\">media and streaming service / render props</p><h1>pointer-inspection render prop for a small chart</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section onPointerMove={(event) => setPointer({ x:event.clientX, y:event.clientY })}><p>Pointer position {pointer.x}, {pointer.y}</p></section></div><figure className=\"chart\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Review trend\"><polyline points=\"4,72 48,54 94,61 140,25 188,42 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Evidence gets stronger as the decision narrows.</figcaption></figure></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><nav className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></footer></figure></form></aside></section></blockquote></article></nav><aside className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></section></footer></article></figure></blockquote></div></nav></aside><div className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></section></aside></figure></article></footer></blockquote></nav></div><details className=\"signature-card\"><summary>Why this detail matters</summary><p>Supporting information stays available without becoming the primary reading path.</p></details><figure className=\"signature-card\"><figcaption>Reading cadence</figcaption><div className=\"bars\"><span/><span/><span/><span/></div></figure><form className=\"signature-card\"><fieldset><legend>Quick calibration</legend><label>Mode<select defaultValue=\"focused\"><option value=\"focused\">Focused</option><option value=\"broad\">Broad</option></select></label></fieldset></form><article className=\"signature-card\"><time dateTime=\"2026-07-21\">21 July</time><h3>Recent handoff</h3><p>A concise trace gives the next collaborator enough context.</p></article></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#a78bfa22,transparent 28rem),#10101f;color:#f5f3ff;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#a78bfa;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#bcb8df; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#20203a;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#a78bfa;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#a78bfa; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#20203a;color:#f5f3ff; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Explain and implement a polished compound components example for a e-commerce studio. Focus on accessible tabs with roving focus and panel IDs; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns accessible tabs with roving focus and panel IDs into a real e-commerce studio surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function ECommerceCompoundComponentsStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const tabs = [\"Overview\", \"Evidence\", \"History\"]; const [tab, setTab] = useState(tabs[0]);\n  return <main className=\"app\"><header><p className=\"eyebrow\">e-commerce studio / compound components</p><h1>accessible tabs with roving focus and panel IDs</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><div role=\"tablist\">{tabs.map((name) => <button key={name} role=\"tab\" aria-selected={tab === name} onClick={() => setTab(name)}>{name}</button>)}</div><p role=\"tabpanel\">{tab} panel stays linked to its control.</p></section></div><footer className=\"action-bar\"><p>Working state stays visible.</p><button onClick={() => setActive(\"shared\")}>Share review</button></footer></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><section className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></article></footer></form></nav></figure></blockquote></div></section><aside className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></form></figure></article></section></div></footer></aside><nav className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></article></section></aside></footer></blockquote></form></figure></nav><article className=\"signature-card\"><header><p className=\"eyebrow\">Material note</p><h3>A deliberate pause</h3></header><p>Contrast is a relationship between weight, rhythm, and proximity.</p></article><section className=\"signature-card\"><p>Evidence coverage</p><meter min=\"0\" max=\"100\" value=\"84\">84%</meter><small>Four strong sources</small></section><aside className=\"signature-card\"><p className=\"eyebrow\">Decision context</p><dl><div><dt>Owner</dt><dd>Mira Chen</dd></div><div><dt>State</dt><dd>Ready</dd></div></dl></aside><section className=\"signature-card\"><p aria-live=\"polite\">Saved state is visible and non-disruptive.</p><output>Last saved just now</output></section></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#bef26422,transparent 28rem),#071b16;color:#effff6;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#bef264;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#a8c8b7; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#103128;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#bef264;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#bef264; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#103128;color:#effff6; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Improve this pattern by implementing a polished error boundaries example for a healthcare portal. Focus on retryable boundary with a reset key and compact fallback; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns retryable boundary with a reset key and compact fallback into a real healthcare portal surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function HealthcareErrorBoundariesStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const [resetKey, setResetKey] = useState(0);\n  return <main className=\"app\"><header><p className=\"eyebrow\">healthcare portal / error boundaries</p><h1>retryable boundary with a reset key and compact fallback</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><p>Error boundary reset key: {resetKey}</p><button onClick={() => setResetKey((value) => value + 1)}>Try again</button></section></div><aside className=\"rail\"><p className=\"eyebrow\">Field context</p><dl><div><dt>Signal</dt><dd>Clear</dd></div><div><dt>Owner</dt><dd>Mira</dd></div></dl></aside></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><nav className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></aside></article></figure></form></footer></div></nav><blockquote className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></aside></nav></form></div></footer></section></article></blockquote><form className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></nav></section></div></article></blockquote></aside></footer></form><dialog className=\"signature-card\" open><p>Review checkpoint</p><button type=\"button\">Acknowledge</button></dialog><section className=\"signature-card\"><p>Keyboard hint</p><kbd>R</kbd><span> opens the focused review action.</span></section><blockquote className=\"signature-card\"><p>Good interfaces let supporting evidence stay quiet until the moment it becomes useful.</p><footer>Field principle</footer></blockquote><div className=\"signature-card\" role=\"status\"><strong>System healthy</strong><p>All decision-critical checks have a current owner.</p></div></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fdba7422,transparent 28rem),#221511;color:#fff8f2;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fdba74;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#d8b9a6; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#3b241a;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fdba74;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fdba74; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#3b241a;color:#fff8f2; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Translate this UI brief into a polished suspense example for a nonprofit giving platform. Focus on lazy analytics island with purposeful loading skeleton; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns lazy analytics island with purposeful loading skeleton into a real nonprofit giving platform surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function NonprofitSuspenseStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const [showInsights, setShowInsights] = useState(false);\n  return <main className=\"app\"><header><p className=\"eyebrow\">nonprofit giving platform / suspense</p><h1>lazy analytics island with purposeful loading skeleton</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><button onClick={() => setShowInsights(true)}>Load analytics island</button><Suspense fallback={<p>Loading a focused insight…</p>}>{showInsights && <p>Insight boundary is ready.</p>}</Suspense></section></div><figure className=\"chart\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Review trend\"><polyline points=\"4,72 48,54 94,61 140,25 188,42 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Evidence gets stronger as the decision narrows.</figcaption></figure></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><nav className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></aside></section></form></footer></article></figure></nav><blockquote className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></footer></aside></div></figure></article></form></section></blockquote><aside className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></div></nav></article></footer></section></form></figure></aside><details className=\"signature-card\"><summary>Why this detail matters</summary><p>Supporting information stays available without becoming the primary reading path.</p></details><nav className=\"signature-card\" aria-label=\"Study sequence\"><ol><li>Arrive</li><li>Inspect</li><li>Decide</li></ol></nav><footer className=\"signature-card\"><p>Edited with care</p><a href=\"#next\">Continue to next move</a></footer><article className=\"signature-card\"><time dateTime=\"2026-07-21\">21 July</time><h3>Recent handoff</h3><p>A concise trace gives the next collaborator enough context.</p></article></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#67e8f922,transparent 28rem),#07111f;color:#dff8ff;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#67e8f9;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#8ba9bc; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#0d1b2d;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#67e8f9;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#67e8f9; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#0d1b2d;color:#dff8ff; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Show the architecture for a polished form libraries example for a finance dashboard. Focus on file validation rules for type and size constraints; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns file validation rules for type and size constraints into a real finance dashboard surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function FinanceFormLibrariesStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const [fileMessage, setFileMessage] = useState(\"Choose a PDF under 5 MB\");\n  return <main className=\"app\"><header><p className=\"eyebrow\">finance dashboard / form libraries</p><h1>file validation rules for type and size constraints</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><label>Upload evidence <input type=\"file\" accept=\"application/pdf\" onChange={(event) => { const file = event.target.files?.[0]; setFileMessage(!file ? \"Choose a PDF under 5 MB\" : file.size > 5_000_000 ? \"File is too large\" : file.type !== \"application/pdf\" ? \"PDF only\" : \"File is valid\"); }} /></label><output>{fileMessage}</output></section></div><footer className=\"action-bar\"><p>Working state stays visible.</p><button onClick={() => setActive(\"shared\")}>Share review</button></footer></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><div className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></footer></article></aside></form></section></figure></nav></div><section className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></aside></form></footer></article></nav></figure></blockquote></section><article className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></section></aside></div></footer></nav></form></figure></article><section className=\"signature-card\"><p>Keyboard hint</p><kbd>R</kbd><span> opens the focused review action.</span></section><div className=\"signature-card\" role=\"status\"><strong>System healthy</strong><p>All decision-critical checks have a current owner.</p></div><figure className=\"signature-card\"><figcaption>Reading cadence</figcaption><div className=\"bars\"><span/><span/><span/><span/></div></figure><section className=\"signature-card\"><ul><li>Capture the signal</li><li>Make the owner visible</li><li>Close the loop</li></ul></section></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fbbf2422,transparent 28rem),#091426;color:#f5f8ff;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fbbf24;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#afc0dc; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#112342;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fbbf24;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fbbf24; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#112342;color:#f5f8ff; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Build a polished testing structure example for a education workspace. Focus on pure view and adapter split with injected clock; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns pure view and adapter split with injected clock into a real education workspace surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function EducationTestingStructureStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const clock = useMemo(() => () => new Intl.DateTimeFormat(\"en\", { hour:\"2-digit\", minute:\"2-digit\" }).format(new Date()), []);\n  return <main className=\"app\"><header><p className=\"eyebrow\">education workspace / testing structure</p><h1>pure view and adapter split with injected clock</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><p>Pure view time: {clock()}</p><button onClick={() => setNotice(\"Adapter dependency injected\")}>Exercise adapter</button></section></div><aside className=\"rail\"><p className=\"eyebrow\">Field context</p><dl><div><dt>Signal</dt><dd>Clear</dd></div><div><dt>Owner</dt><dd>Mira</dd></div></dl></aside></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><nav className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></aside></footer></blockquote></article></section></form></div></nav><footer className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><div className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></nav></form></blockquote></aside></div></section></article></footer><aside className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></form></div></footer></nav></article></section></aside><section className=\"signature-card\"><p>Release confidence</p><progress value=\"78\" max=\"100\">78%</progress><output>78%</output></section><article className=\"signature-card\"><header><p className=\"eyebrow\">Material note</p><h3>A deliberate pause</h3></header><p>Contrast is a relationship between weight, rhythm, and proximity.</p></article><blockquote className=\"signature-card\"><p>Good interfaces let supporting evidence stay quiet until the moment it becomes useful.</p><footer>Field principle</footer></blockquote><dialog className=\"signature-card\" open><p>Review checkpoint</p><button type=\"button\">Acknowledge</button></dialog></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#5eead422,transparent 28rem),#111817;color:#f0fffb;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#5eead4;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#a6c5bd; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#1d2b29;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#5eead4;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#5eead4; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#1d2b29;color:#f0fffb; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Explain and implement a polished React accessibility example for a logistics coordination console. Focus on focus-restoring modal dialog pattern; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns focus-restoring modal dialog pattern into a real logistics coordination console surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function LogisticsReactAccessibilityStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const dialogRef = useRef<HTMLDialogElement>(null);\n  return <main className=\"app\"><header><p className=\"eyebrow\">logistics coordination console / React accessibility</p><h1>focus-restoring modal dialog pattern</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><button onClick={() => dialogRef.current?.showModal()}>Open dialog</button><dialog ref={dialogRef}><p>Focused dialog content</p><button onClick={() => dialogRef.current?.close()}>Close</button></dialog></section></div><figure className=\"chart\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Review trend\"><polyline points=\"4,72 48,54 94,61 140,25 188,42 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Evidence gets stronger as the decision narrows.</figcaption></figure></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><article className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></figure></aside></form></footer></blockquote></div></nav></article><footer className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></article></section></form></aside></figure></nav></footer><nav className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></figure></div></footer></form></section></aside></article></nav><section className=\"signature-card\"><p>Evidence coverage</p><meter min=\"0\" max=\"100\" value=\"84\">84%</meter><small>Four strong sources</small></section><section className=\"signature-card\"><p aria-live=\"polite\">Saved state is visible and non-disruptive.</p><output>Last saved just now</output></section><section className=\"signature-card\"><table><caption>Review ledger</caption><thead><tr><th>Signal</th><th>Read</th></tr></thead><tbody><tr><th>Evidence</th><td>Clear</td></tr><tr><th>Risk</th><td>Low</td></tr></tbody></table></section><details className=\"signature-card\"><summary>Why this detail matters</summary><p>Supporting information stays available without becoming the primary reading path.</p></details></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fb718522,transparent 28rem),#17111a;color:#fff4fa;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fb7185;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#d6afc7; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#291a28;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fb7185;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fb7185; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#291a28;color:#fff4fa; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Improve this pattern by implementing a polished React accessibility example for a social publishing platform. Focus on polite live region for asynchronous saved status; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns polite live region for asynchronous saved status into a real social publishing platform surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function SocialReactAccessibilityStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const [notice, setNotice] = useState(\"Changes are saved locally\");\n  return <main className=\"app\"><header><p className=\"eyebrow\">social publishing platform / React accessibility</p><h1>polite live region for asynchronous saved status</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><button onClick={() => setNotice(\"Saved at \" + new Date().toLocaleTimeString())}>Save</button><output aria-live=\"polite\">{notice}</output></section></div><footer className=\"action-bar\"><p>Working state stays visible.</p><button onClick={() => setActive(\"shared\")}>Share review</button></footer></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><form className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></nav></div></article></aside></figure></footer></form><article className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></aside></section></figure></footer></form></nav></article><section className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></nav></figure></article></div></footer></aside></section><figure className=\"signature-card\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Signal rises over review moments\"><polyline points=\"4,72 48,54 94,63 140,27 188,39 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Confidence strengthens after each useful pass.</figcaption></figure><dialog className=\"signature-card\" open><p>Review checkpoint</p><button type=\"button\">Acknowledge</button></dialog><details className=\"signature-card\"><summary>Why this detail matters</summary><p>Supporting information stays available without becoming the primary reading path.</p></details><section className=\"signature-card\"><table><caption>Review ledger</caption><thead><tr><th>Signal</th><th>Read</th></tr></thead><tbody><tr><th>Evidence</th><td>Clear</td></tr><tr><th>Risk</th><td>Low</td></tr></tbody></table></section></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#fda4af22,transparent 28rem),#20112e;color:#fff7fe;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#fda4af;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#d7b8e6; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#351b4d;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#fda4af;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#fda4af; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#351b4d;color:#fff7fe; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Translate this UI brief into a polished ref forwarding example for a real-estate listing service. Focus on imperative scroll-to-result handle with forwardRef; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns imperative scroll-to-result handle with forwardRef into a real real-estate listing service surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function RealEstateRefForwardingStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const scrollRef = useRef<HTMLDivElement>(null); const scrollToResult = () => scrollRef.current?.scrollIntoView({ behavior:\"smooth\", block:\"center\" });\n  return <main className=\"app\"><header><p className=\"eyebrow\">real-estate listing service / ref forwarding</p><h1>imperative scroll-to-result handle with forwardRef</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section ref={scrollRef}><button onClick={scrollToResult}>Scroll to result</button><p>Forwarded imperative behavior has a real target.</p></section></div><aside className=\"rail\"><p className=\"eyebrow\">Field context</p><dl><div><dt>Signal</dt><dd>Clear</dd></div><div><dt>Owner</dt><dd>Mira</dd></div></dl></aside></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><aside className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><figure className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><section className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></div></article></section></form></blockquote></figure></nav></aside><div className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><footer className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></article></figure></nav></aside></blockquote></footer></form></div><section className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><aside className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><footer className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></footer></blockquote></form></figure></nav></aside></div></section><form className=\"signature-card\"><fieldset><legend>Quick calibration</legend><label>Mode<select defaultValue=\"focused\"><option value=\"focused\">Focused</option><option value=\"broad\">Broad</option></select></label></fieldset></form><dialog className=\"signature-card\" open><p>Review checkpoint</p><button type=\"button\">Acknowledge</button></dialog><aside className=\"signature-card\"><p className=\"eyebrow\">Decision context</p><dl><div><dt>Owner</dt><dd>Mira Chen</dd></div><div><dt>State</dt><dd>Ready</dd></div></dl></aside><article className=\"signature-card\"><time dateTime=\"2026-07-21\">21 July</time><h3>Recent handoff</h3><p>A concise trace gives the next collaborator enough context.</p></article></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#a78bfa22,transparent 28rem),#10101f;color:#f5f3ff;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#a78bfa;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#bcb8df; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#20203a;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#a78bfa;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#a78bfa; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#20203a;color:#f5f3ff; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}
{"messages":[{"role":"system","content":"You are a senior React and TypeScript engineer who teaches maintainable component patterns with accessible, production-ready interfaces."},{"role":"user","content":"Show the architecture for a polished external stores example for a food subscription service. Focus on useSyncExternalStore bridge for a browser connection signal; include complete working code, accessible controls, and deliberate visual design rather than a generic utility surface."},{"role":"assistant","content":"This implementation turns useSyncExternalStore bridge for a browser connection signal into a real food subscription service surface, with a deliberate palette, readable hierarchy, and accessible interaction details.\n\n```tsx\n\"use client\";\nimport React, { Suspense, createContext, useCallback, useDeferredValue, useEffect, useMemo, useRef, useState, useSyncExternalStore, useTransition } from \"react\";\nconst WorkspaceContext = createContext<{ active:string; setActive:(value:string)=>void }>({ active:\"\", setActive:() => {} });\nconst items = [{ id:\"evidence\", label:\"Evidence review\", group:\"priority\" }, { id:\"handoff\", label:\"Handoff note\", group:\"later\" }, { id:\"release\", label:\"Release check\", group:\"priority\" }];\nexport default function FoodExternalStoresStudio() {\n  const [active, setActive] = useState(\"overview\"); const [query, setQuery] = useState(\"\"); const [density, setDensity] = useState(\"comfortable\"); const [notice, setNotice] = useState(\"Ready to review\");\n  const online = useSyncExternalStore((notify) => { addEventListener(\"online\", notify); addEventListener(\"offline\", notify); return () => { removeEventListener(\"online\", notify); removeEventListener(\"offline\", notify); }; }, () => navigator.onLine, () => true);\n  return <main className=\"app\"><header><p className=\"eyebrow\">food subscription service / external stores</p><h1>useSyncExternalStore bridge for a browser connection signal</h1><p>Each stateful pattern is shown inside a polished, accessible surface rather than as isolated pseudocode.</p></header><div className=\"layout\"><div className=\"surface\"><section><p>Connection: {online ? \"Online\" : \"Offline\"}</p></section></div><figure className=\"chart\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Review trend\"><polyline points=\"4,72 48,54 94,61 140,25 188,42 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Evidence gets stronger as the decision narrows.</figcaption></figure></div><section className=\"signature-grid\" aria-label=\"Supporting interface studies\"><section className=\"signature-chain chain-0\"><aside className=\"signature-chain chain-0\"><footer className=\"signature-chain chain-0\"><blockquote className=\"signature-chain chain-0\"><nav className=\"signature-chain chain-0\"><div className=\"signature-chain chain-0\"><form className=\"signature-chain chain-0\"><article className=\"signature-chain chain-0\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></article></form></div></nav></blockquote></footer></aside></section><footer className=\"signature-chain chain-1\"><form className=\"signature-chain chain-1\"><article className=\"signature-chain chain-1\"><aside className=\"signature-chain chain-1\"><nav className=\"signature-chain chain-1\"><section className=\"signature-chain chain-1\"><figure className=\"signature-chain chain-1\"><blockquote className=\"signature-chain chain-1\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></blockquote></figure></section></nav></aside></article></form></footer><aside className=\"signature-chain chain-2\"><blockquote className=\"signature-chain chain-2\"><div className=\"signature-chain chain-2\"><section className=\"signature-chain chain-2\"><article className=\"signature-chain chain-2\"><form className=\"signature-chain chain-2\"><nav className=\"signature-chain chain-2\"><figure className=\"signature-chain chain-2\"><p className=\"eyebrow\">Interface anatomy</p><h3>Evidence moves through a deliberate sequence.</h3><p>Each supporting layer is ordered to make a focused decision easier to trust.</p><time dateTime=\"2026-07-21\">Current edition</time></figure></nav></form></article></section></div></blockquote></aside><article className=\"signature-card\"><time dateTime=\"2026-07-21\">21 July</time><h3>Recent handoff</h3><p>A concise trace gives the next collaborator enough context.</p></article><figure className=\"signature-card\"><svg viewBox=\"0 0 240 90\" role=\"img\" aria-label=\"Signal rises over review moments\"><polyline points=\"4,72 48,54 94,63 140,27 188,39 236,12\" fill=\"none\" stroke=\"currentColor\" strokeWidth=\"3\" /></svg><figcaption>Confidence strengthens after each useful pass.</figcaption></figure><section className=\"signature-card\"><p>Keyboard hint</p><kbd>R</kbd><span> opens the focused review action.</span></section><dialog className=\"signature-card\" open><p>Review checkpoint</p><button type=\"button\">Acknowledge</button></dialog></section><style jsx>{` :global(*) { box-sizing:border-box; } .app { min-height:100vh;padding:clamp(1rem,4vw,4rem);background:radial-gradient(circle at top right,#bef26422,transparent 28rem),#071b16;color:#effff6;font-family:ui-sans-serif,system-ui; } header { max-width:72rem;margin:auto;border-bottom:1px solid #ffffff18;padding-bottom:1.5rem; } h1 { max-width:17ch;margin:.7rem 0 1rem;font-size:clamp(2.5rem,7vw,5.8rem);line-height:.94;letter-spacing:-.065em; } .eyebrow { color:#bef264;font-size:.72rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase; } p { color:#a8c8b7; } .layout { display:grid;grid-template-columns:minmax(0,1.25fr) minmax(15rem,.55fr);gap:1rem;max-width:72rem;margin:1.5rem auto; } .surface,.rail,.chart,.action-bar { border:1px solid #ffffff18;border-radius:1.6rem;background:#103128;padding:clamp(1rem,3vw,2rem);box-shadow:0 18px 55px #0003; } section,article,form { display:grid;gap:1rem; } button,input { font:inherit; } button { border:0;border-radius:.8rem;background:#bef264;color:#07111f;padding:.7rem .9rem;font-weight:800;cursor:pointer; } input { border:1px solid #ffffff25;border-radius:.7rem;background:#0003;color:inherit;padding:.65rem; } ul { display:grid;gap:.55rem;padding:0;list-style:none; } li { border-radius:.75rem;background:#0003;padding:.6rem; } .chart svg { width:100%;color:#bef264; } dialog { border:1px solid #ffffff24;border-radius:1rem;background:#103128;color:#effff6; } @media(max-width:48rem) { .layout { grid-template-columns:1fr; } } `}</style></main>;\n}\n```"}]}