/* Shared styling for the static tools and blog. Kept small and inlined per
   page so these load in one round trip, independent of the React app. */
:root{
  --blue:#1D4ED8; --blue-dark:#1E40AF; --blue-soft:#EFF4FE;
  --ink:#0F172A; --body:#475569; --muted:#64748B;
  --line:#E2E8F0; --bg:#F8FAFC; --white:#fff;
  --good:#0F766E; --warn:#B45309; --bad:#B91C1C;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:Roboto,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
header.site{background:var(--white);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;padding-block:14px;gap:12px}
.brand{font-weight:700;font-size:1.15rem;color:var(--blue);text-decoration:none;letter-spacing:-.01em}
.brand span{color:var(--ink)}
.nav{display:flex;gap:18px;font-size:.92rem}
.nav a{color:var(--body);text-decoration:none}
.nav a:hover{color:var(--blue)}
h1{font-size:clamp(1.8rem,5vw,2.5rem);line-height:1.15;letter-spacing:-.02em;margin:0 0 14px;text-wrap:balance}
h2{font-size:1.4rem;line-height:1.25;margin:38px 0 12px;letter-spacing:-.01em}
h3{font-size:1.12rem;margin:26px 0 8px}
p{margin:0 0 16px;color:var(--body)}
.lede{font-size:1.12rem;color:var(--body);margin-bottom:28px}
main{padding:34px 0 70px}
.card{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:24px;margin-bottom:22px}
label{display:block;font-weight:600;font-size:.93rem;color:var(--ink);margin-bottom:6px}
.hint{font-weight:400;color:var(--muted);font-size:.85rem}
input[type=number],select{width:100%;padding:11px 13px;font-size:1rem;font-family:inherit;
  border:1px solid var(--line);border-radius:9px;background:var(--white);color:var(--ink)}
input[type=number]:focus,select:focus{outline:2px solid var(--blue);outline-offset:1px;border-color:var(--blue)}
.field{margin-bottom:18px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:560px){.grid2{grid-template-columns:1fr}}
.result{background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:#fff;border-radius:14px;padding:26px;margin-bottom:22px}
.result .big{font-size:clamp(2rem,7vw,2.9rem);font-weight:700;letter-spacing:-.02em;line-height:1.1;font-variant-numeric:tabular-nums}
.result .lbl{font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;opacity:.85;margin-bottom:6px}
.result .row{display:flex;gap:28px;flex-wrap:wrap;margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.25)}
.result .row div{flex:1 1 130px}
.result .row .v{font-size:1.35rem;font-weight:600;font-variant-numeric:tabular-nums}
.cta{display:inline-flex;align-items:center;gap:8px;background:var(--blue);color:#fff;text-decoration:none;
  font-weight:600;padding:13px 22px;border-radius:10px;border:none;font-size:1rem;cursor:pointer}
.cta:hover{background:var(--blue-dark)}
.cta.ghost{background:transparent;color:var(--blue);border:1.5px solid var(--blue)}
.cta.ghost:hover{background:var(--blue-soft)}
.cta.wa{background:#25D366}.cta.wa:hover{background:#1FB855}
.ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.note{background:var(--blue-soft);border-left:3px solid var(--blue);border-radius:0 10px 10px 0;padding:14px 18px;margin:0 0 18px;font-size:.94rem}
.note p:last-child{margin-bottom:0}
ul{padding-left:20px;margin:0 0 18px}li{margin-bottom:8px;color:var(--body)}
footer.site{border-top:1px solid var(--line);background:var(--white);padding:28px 0;font-size:.88rem;color:var(--muted)}
footer.site a{color:var(--blue)}
.crumb{font-size:.85rem;color:var(--muted);margin-bottom:18px}
.crumb a{color:var(--muted)}
.disclaimer{font-size:.85rem;color:var(--muted);font-style:italic}