:root{
  --ink:#1B2A4A;
  --paper:#FBFAF6;
  --card:#F3EFE3;
  --green:#2F7A4D;
  --green-dark:#20573A;
  --coral:#E8603C;
  --graphite:#6B7280;
  --line:#D9D3C1;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Inter',sans-serif;
  line-height:1.5;
}
h1,h2,h3{
  font-family:'Fraunces',serif;
  font-weight:600;
  margin:0 0 .3em 0;
  letter-spacing:-0.01em;
}
.mono{font-family:'IBM Plex Mono',monospace;}
a{color:var(--green-dark);}
.wrap{max-width:920px;margin:0 auto;padding:0 24px;}

/* header */
header{
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.brand{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px 18px;
}
.brand-name{
  font-family:'Fraunces',serif;font-weight:700;font-size:1.3rem;
  display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);
}
.brand-name .dot{width:9px;height:9px;border-radius:50%;background:var(--green);display:inline-block;}
.brand-right{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
#currency-select{
  font-family:'IBM Plex Mono',monospace;font-size:.8rem;padding:6px 8px;
  border:1px solid var(--line);border-radius:3px;background:#fff;color:var(--ink);
}
.currency-note{font-size:.72rem;color:var(--graphite);max-width:170px;line-height:1.3;}
nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:4px 16px;}
nav a{color:var(--ink);text-decoration:none;font-size:.85rem;font-weight:500;white-space:nowrap;}
nav a:hover, nav a.active{color:var(--green-dark);}

/* hero */
.hero{padding:56px 0 40px 0;}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--coral);margin-bottom:14px;
}
.hero h1{font-size:2.4rem;max-width:640px;}
.hero p.sub{max-width:560px;color:var(--graphite);font-size:1.05rem;margin-top:10px;}

/* tool grid on homepage */
.tool-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:40px 0;
}
@media(max-width:600px){.tool-grid{grid-template-columns:1fr;}}
.tool-card{
  background:var(--card);border:1px solid var(--line);border-radius:4px;padding:22px;
  text-decoration:none;color:var(--ink);display:block;
}
.tool-card:hover{border-color:var(--green);}
.tool-card .tool-label{
  font-family:'IBM Plex Mono',monospace;font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--graphite);margin-bottom:6px;
}
.tool-card h3{font-size:1.15rem;margin-bottom:6px;}
.tool-card p{color:var(--graphite);font-size:.85rem;margin:0;}

/* tool card (calculator itself) */
.tool{
  background:var(--card);border:1px solid var(--line);border-radius:4px;padding:32px;margin:40px 0;position:relative;
}
.tool-label{
  font-family:'IBM Plex Mono',monospace;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  color:var(--graphite);margin-bottom:6px;
}
.tool h2{font-size:1.5rem;}
.tool-desc{color:var(--graphite);font-size:.92rem;margin-bottom:24px;max-width:560px;}

.fields{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px;}
@media(max-width:600px){.fields{grid-template-columns:1fr;}}
label{display:block;font-size:.82rem;font-weight:600;margin-bottom:6px;color:var(--ink);}
.hint{font-size:.74rem;color:var(--graphite);margin-top:4px;font-weight:400;}
input[type=number]{
  width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:3px;
  font-family:'IBM Plex Mono',monospace;font-size:.95rem;background:#fff;color:var(--ink);
}
input[type=number]:focus{outline:2px solid var(--green);outline-offset:1px;}

button.calc{
  margin-top:24px;background:var(--ink);color:#fff;border:none;padding:12px 26px;
  font-family:'IBM Plex Mono',monospace;font-size:.85rem;letter-spacing:.05em;text-transform:uppercase;
  border-radius:3px;cursor:pointer;font-weight:600;
}
button.calc:hover{background:var(--green-dark);}
button.calc:focus-visible{outline:2px solid var(--coral);outline-offset:2px;}

/* receipt output */
.receipt{
  margin-top:28px;background:#fff;max-width:340px;padding:20px 22px 26px 22px;
  font-family:'IBM Plex Mono',monospace;font-size:.85rem;color:var(--ink);
  box-shadow:0 4px 14px rgba(27,42,74,.08);
  clip-path: polygon(0% 0%,100% 0%,100% 96%,95% 100%,90% 96%,85% 100%,80% 96%,75% 100%,70% 96%,65% 100%,60% 96%,55% 100%,50% 96%,45% 100%,40% 96%,35% 100%,30% 96%,25% 100%,20% 96%,15% 100%,10% 96%,5% 100%,0% 96%);
  display:none;
}
.receipt.show{display:block;}
.receipt .r-title{
  text-align:center;font-weight:600;letter-spacing:.08em;text-transform:uppercase;font-size:.75rem;
  border-bottom:1px dashed var(--line);padding-bottom:10px;margin-bottom:10px;
}
.receipt .r-row{display:flex;justify-content:space-between;padding:3px 0;color:var(--graphite);font-size:.8rem;}
.receipt .r-total{
  border-top:1px dashed var(--line);margin-top:8px;padding-top:10px;
  display:flex;justify-content:space-between;font-size:1.1rem;font-weight:600;color:var(--green-dark);
}

/* content / seo section */
.content-block{padding:36px 0;border-top:1px solid var(--line);}
.content-block h3{font-size:1.15rem;}
.content-block p{color:var(--graphite);max-width:680px;}

/* affiliate / ad slots */
.slot{
  border:1px dashed var(--line);border-radius:4px;padding:22px;margin:32px 0;
  color:var(--graphite);font-size:.8rem;font-family:'IBM Plex Mono',monospace;text-align:center;
}

footer{border-top:1px solid var(--line);padding:30px 0 50px 0;color:var(--graphite);font-size:.82rem;}

/* badges on homepage tool cards */
.badge{
  display:inline-block;font-family:'IBM Plex Mono',monospace;font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;
  padding:3px 8px;border-radius:3px;margin-left:8px;vertical-align:middle;
}
.badge-free{background:#E4F0E8;color:var(--green-dark);}
.badge-premium{background:#FBE7DE;color:var(--coral);}

/* nav pricing link stands out slightly */
nav a.pricing-link{color:var(--green-dark);font-weight:700;}

/* lock overlay on gated calculators */
.lock-overlay{
  border:1px dashed var(--line);border-radius:4px;padding:36px 28px;text-align:center;background:#fff;
}
.lock-overlay .lock-icon{font-size:1.6rem;margin-bottom:10px;}
.lock-overlay h3{font-size:1.15rem;margin-bottom:8px;}
.lock-overlay p{color:var(--graphite);font-size:.9rem;max-width:440px;margin:0 auto 20px auto;}
.lock-overlay a.unlock-btn{
  display:inline-block;background:var(--ink);color:#fff;text-decoration:none;padding:12px 26px;
  font-family:'IBM Plex Mono',monospace;font-size:.85rem;letter-spacing:.05em;text-transform:uppercase;border-radius:3px;font-weight:600;
}
.lock-overlay a.unlock-btn:hover{background:var(--green-dark);}

/* pricing page */
.price-box{
  background:var(--card);border:1px solid var(--line);border-radius:4px;padding:36px;text-align:center;margin:32px 0;
}
.price-box .price-label{font-family:'IBM Plex Mono',monospace;font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:var(--graphite);}
.price-box .price-amount{font-family:'Fraunces',serif;font-size:2.6rem;font-weight:700;margin:8px 0;color:var(--ink);}
.price-box .price-note{color:var(--graphite);font-size:.85rem;margin-bottom:24px;}
.feature-list{list-style:none;padding:0;margin:0 0 28px 0;max-width:400px;margin-left:auto;margin-right:auto;text-align:left;}
.feature-list li{padding:6px 0;font-size:.9rem;color:var(--ink);}
.feature-list li::before{content:"✓ ";color:var(--green-dark);font-weight:700;}
.paypal-btn{
  display:inline-block;background:#FFC439;color:#111;border:none;padding:14px 40px;
  font-family:'Inter',sans-serif;font-size:1rem;font-weight:700;border-radius:24px;cursor:pointer;
}
.paypal-btn:hover{background:#f0b429;}
.free-box{
  border:1px solid var(--line);border-radius:4px;padding:22px;margin:24px 0;background:#fff;
}
.free-box h3{font-size:1rem;margin-bottom:4px;}
.free-box p{color:var(--graphite);font-size:.85rem;margin:0;}
.success-banner{
  background:#E4F0E8;border:1px solid var(--green);border-radius:4px;padding:20px 24px;margin:24px 0;
  display:none;
}
.success-banner.show{display:block;}
.success-banner h3{color:var(--green-dark);font-size:1.05rem;margin-bottom:4px;}
.success-banner p{color:var(--ink);font-size:.88rem;margin:0;}