:root{color:#0f172a;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f8fafc;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-weight:400;line-height:1.5}*{box-sizing:border-box}body{background:#f8fafc;min-width:320px;min-height:100vh;margin:0}#root{min-height:100vh}.app-shell{gap:16px;max-width:980px;margin:0 auto;padding:24px;display:grid}header{color:#fff;background:linear-gradient(135deg,#0f172a,#2563eb);border-radius:16px;padding:24px}.card{background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:20px;box-shadow:0 8px 30px #0f172a14}label{gap:6px;margin-bottom:12px;font-weight:600;display:grid}input,select,button{border:1px solid #cbd5e1;border-radius:10px;padding:10px 12px;font-size:1rem}button{color:#fff;cursor:pointer;background:#2563eb;border:none}button:hover{background:#1d4ed8}.alert{color:#b91c1c;background:#fef2f2;border-radius:10px;padding:10px}.panel{background:#f8fafc;border-radius:12px;margin-top:12px;padding:12px}