/* Minimal styling consistent with AI tools */
:root{
  --bg:#f8fafc; --card:#fff; --muted:#6b7280; --border:#e5e7eb; --ink:#111827;
}
body{background:var(--bg);color:var(--ink);font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;margin:0;padding:0}
.container{max-width:1000px;margin:24px auto;padding:0 16px}
.note{color:var(--muted);margin:8px 0 16px}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.panel{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;margin:16px 0}
.calc-form input,.calc-form select,.calc-form textarea{width:100%;}
.result h3{margin:8px 0}
.output{background:#0f172a;color:#e2e8f0;padding:12px;border-radius:8px;min-height:120px}