:root{--bg:#f7f9fb;--card:#fff;--accent:#2b6cb0}
body{font-family:Inter,system-ui,Segoe UI,Arial;background:var(--bg);margin:0;padding:1rem}
.container{max-width:1000px;margin:0 auto}
header{display:flex;flex-direction:column;gap:0.5rem}
.token-row{display:flex;gap:0.5rem;align-items:center}
nav{display:flex;gap:0.5rem}
button{background:var(--accent);color:#fff;border:none;padding:0.4rem 0.6rem;border-radius:4px;cursor:pointer}
button.secondary{background:#666}
.card{background:var(--card);padding:1rem;border-radius:6px;box-shadow:0 1px 2px rgba(0,0,0,0.04);margin-top:1rem}
.hidden{display:none}
.table{width:100%;border-collapse:collapse;margin-top:0.5rem}
.table th,.table td{padding:0.5rem;border-bottom:1px solid #eee;text-align:left}
pre{white-space:pre-wrap;word-break:break-word}
.error{border-left:4px solid #e53e3e;padding-left:0.8rem}
label{font-weight:600}
input{padding:0.4rem;border:1px solid #ddd;border-radius:4px}
footer{margin-top:1rem;color:#666}