*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#fff;color:#111}
.header{position:sticky;top:0;background:#fff;border-bottom:1px solid #eee;padding:14px 20px;display:flex;justify-content:space-between;align-items:center}
.header nav a{margin-left:10px;color:#333;text-decoration:none}
main{max-width:980px;margin:0 auto;padding:20px}
.controls{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:16px}
.controls .field{display:flex;flex-direction:column}
.controls .field.wide{grid-column:1/-1}
.controls label{font-size:12px;color:#555;margin-bottom:6px}
.controls input,.controls select,.controls textarea{border:1px solid #ddd;border-radius:8px;padding:10px;font-size:14px}
.chat .composer{position:sticky;bottom:0;background:#fff;border:1px solid #eee;border-radius:10px;padding:10px}
.composer textarea{width:100%;border:none;outline:none;resize:vertical;font-size:14px}
.composer .row{display:flex;gap:10px;align-items:center;margin-top:8px}
.checkbox{font-size:12px;color:#444}
.apiurl{flex:1;border:1px solid #ddd;border-radius:8px;padding:8px}
#generateBtn{border:0;background:#111;color:#fff;border-radius:8px;padding:10px 14px;cursor:pointer}
.loading{margin:16px 0;padding:12px 14px;border:1px dashed #ccc;border-radius:8px}
.hidden{display:none}
.output{border:1px solid #eee;border-radius:10px;padding:14px;margin-top:16px}
.output .row{display:flex;gap:10px;align-items:center;margin-bottom:12px}
.output .row label{width:64px;color:#777;font-size:12px}
.output input{flex:1;border:1px solid #ddd;border-radius:8px;padding:10px}
.output textarea{width:100%;border:1px solid #ddd;border-radius:8px;padding:10px}
.actions{margin-top:8px;display:flex;gap:8px;justify-content:flex-end}
button.ghost{background:#f6f7f8;border:1px solid #e6e7e8}
.help{color:#666;font-size:12px;margin-top:10px}