/* Minimal, tasteful styles (no external CSS) */
:root{
  --bg:#f7f7fb;--fg:#0f172a;--muted:#6b7280;--card:#ffffff;--border:#e5e7eb;
  --accent:#111827;--accent-2:#374151;--good:#e8f5e9;--info:#e8ecff;
  --shadow:0 2px 10px rgba(0,0,0,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;line-height:1.4}
.container{max-width:1200px;margin:0 auto;padding:24px}
.header{display:flex;gap:16px;align-items:end;justify-content:space-between;margin-bottom:16px}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.mt{margin-top:16px}
.grid{display:grid;gap:16px}
.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.grid.two,.grid.three{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:var(--shadow)}
.row{display:flex;align-items:center}
.row.between{justify-content:space-between}
.row.gap{gap:12px;align-items:center;margin-top:10px}
.field{display:flex;flex-direction:column;gap:6px}
.field input,.field select{border:1px solid var(--border);border-radius:12px;padding:10px 12px;font-size:14px;outline:none}
.field input:focus,.field select:focus{border-color:#9ca3af;box-shadow:0 0 0 2px rgba(0,0,0,.06)}
.readonly{border:1px dashed var(--border);border-radius:12px;padding:10px 12px;background:#fafafa;color:#374151}
.totals .total{border-top:1px solid var(--border);padding-top:8px;margin-top:6px}
.pill{border:1px solid var(--border);border-radius:16px;padding:16px;text-align:center;background:#fff}
.big{font-size:1.6rem;font-weight:700}
.btn{border:1px solid var(--border);background:var(--card);padding:10px 16px;border-radius:12px;cursor:pointer}
.btn.primary{background:var(--accent);color:#ffffff;border-color:var(--accent)}
.btn.light{background:#fff;color:var(--accent);border-color:#fff}
.toggle{width:56px;height:28px;border-radius:99px;background:var(--border);border:1px solid var(--border);position:relative}
.toggle .knob{position:absolute;top:2px;left:2px;width:24px;height:24px;background:#fff;border-radius:50%;transition:transform .2s ease}
.toggle.on{background:var(--accent)}
.toggle.on .knob{transform:translateX(28px)}
.center{place-items:center}
.cta{margin-top:16px;background:linear-gradient(90deg,var(--accent),var(--accent-2));padding:16px;border-radius:16px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:12px}
.footer{margin-top:12px;text-align:center}
#diffPill.good{background:var(--good)}
#diffPill.info{background:var(--info)}