:root{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#111827;background:#f3f4f6}*{box-sizing:border-box}html,body,#root{margin:0;width:100%;height:100%}.app{min-height:100%;display:grid;place-items:center;padding:20px}.card{width:min(640px,100%);background:#fff;border-radius:14px;padding:16px;box-shadow:0 10px 24px #00000014}h1{margin:0;font-size:24px}.muted{color:#6b7280;margin-top:6px}.grid{margin-top:12px;display:grid;gap:10px}.item{border:1px solid #e5e7eb;border-radius:12px;padding:12px}.item p{margin:8px 0}.buttons{display:flex;gap:8px;flex-wrap:wrap}button{border:0;border-radius:10px;height:36px;padding:0 12px;background:#2563eb;color:#fff;cursor:pointer}button:hover{background:#1d4ed8}.error-screen{width:100%;height:100%;display:grid;place-items:center;padding:24px}.error{color:#dc2626}