/* Shared design system for tools.plandorabox.com calculators.
   Same visual language as the QR Code Generator tool: warm off-white
   background, white cards, deep green primary, navy secondary, olive pills. */
/* colour tokens live in brand.css */
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}

/* ---------- HEADER ---------- */
header.site{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 32px;
  border-bottom:1px solid var(--border);
  background:var(--bg);
  flex-wrap:wrap;
  gap:12px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  flex-wrap:wrap;
}
.logo-mark{
  display:grid;
  grid-template-columns:1fr 1fr;
  grid-template-rows:1fr 1fr;
  width:22px;
  height:22px;
  gap:2px;
  border-radius:5px;
  overflow:hidden;
  flex:0 0 auto;
}
.logo-mark span:nth-child(1){background:var(--pbx-ink);}
.logo-mark span:nth-child(2){background:var(--pbx-ink);}
.logo-mark span:nth-child(3){background:var(--pbx-ink);}
.logo-mark span:nth-child(4){background:var(--pbx-ink);}
.brand-word{font-weight:800;color:var(--navy);}
.brand-word .dim{color:var(--muted);font-weight:600;}
.crumb{color:var(--muted);}
.crumb a:hover{text-decoration:underline;}
.crumb b{color:var(--text);font-weight:700;}
nav.site-nav{
  display:flex;
  align-items:center;
  gap:22px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.03em;
  color:var(--navy);
}
nav.site-nav a{opacity:.85;}
nav.site-nav a:hover{opacity:1;text-decoration:underline;}

/* ---------- LAYOUT ---------- */
.layout{
  display:grid;
  grid-template-columns:300px minmax(0,760px) 300px;
  gap:24px;
  max-width:1420px;
  margin:0 auto;
  padding:32px 24px 80px;
  align-items:start;
  justify-content:center;
}
.col-ads{display:flex;flex-direction:column;gap:20px;}
.ad-box{
  border:1px dashed var(--pbx-border);
  border-radius:var(--radius);
  background:var(--pbx-surface-2);
  color:var(--pbx-faint);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-size:12px;
  padding:12px;
  position:relative;
}
.ad-box .ad-tag{
  position:absolute;
  top:8px;
  left:10px;
  font-size:10px;
  font-weight:800;
  letter-spacing:.08em;
  color:var(--pbx-faint);
}
.ad-box .ad-dim{font-weight:700;color:var(--pbx-faint);}
.ad-box .ad-sub{margin-top:4px;font-size:11px;color:var(--pbx-faint);}
.ad-600{height:600px;}
.ad-250{height:250px;}

/* ---------- MAIN COLUMN ---------- */
main.center{min-width:0;}
.page-head{margin-bottom:24px;}
.page-head h1{
  font-size:34px;
  font-weight:800;
  margin:0 0 10px;
  letter-spacing:-.01em;
}
.page-head p{
  margin:0;
  color:var(--muted);
  font-size:15px;
  line-height:1.55;
  max-width:640px;
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:22px;
  margin-bottom:20px;
}
.card h2{
  font-size:12px;
  font-weight:800;
  letter-spacing:.06em;
  color:var(--pbx-faint);
  margin:0 0 16px;
}

/* calculator form fields (shared across all calculators) */
.field{margin-bottom:16px;}
.field label{
  display:block;
  font-size:12px;
  font-weight:700;
  color:var(--muted);
  margin-bottom:6px;
}
.field input,
.field select{
  width:100%;
  border:1px solid var(--border);
  border-radius:10px;
  padding:12px 14px;
  font-size:15px;
  font-family:inherit;
  background:var(--pbx-input);
  color:var(--text);
}
.field input:focus,
.field select:focus{
  outline:none;
  border-color:var(--green);
  background:var(--pbx-input);
}
.field-row{display:flex;gap:12px;flex-wrap:wrap;}
.field-row > .field{flex:1;min-width:160px;}

.tabs{
  display:flex;
  gap:8px;
  margin-bottom:18px;
  flex-wrap:wrap;
}
.calc-panel{display:none;}
.calc-panel.active{display:block;}
.tab-btn{
  border:none;
  background:var(--olive);
  color:var(--olive-text);
  font-weight:700;
  font-size:13px;
  padding:8px 16px;
  border-radius:999px;
  cursor:pointer;
  transition:background .15s,color .15s;
}
.tab-btn.active{background:var(--green);color:var(--pbx-on-ink);}
.tab-btn:hover:not(.active){background:var(--pbx-border);}

.btn-primary{
  width:100%;
  background:var(--green);
  color:var(--pbx-on-ink);
  border:none;
  font-weight:800;
  font-size:15px;
  padding:14px 18px;
  border-radius:10px;
  cursor:pointer;
  transition:background .15s;
}
.btn-primary:hover{background:var(--green-dark);}

/* result panel */
.result-panel{
  background:var(--pbx-surface-2);
  border:1px solid var(--border);
  border-radius:10px;
  padding:20px;
  margin-top:18px;
}
.result-panel.empty{
  color:var(--pbx-faint);
  font-size:13px;
  text-align:center;
}
.result-label{
  font-size:11px;
  font-weight:800;
  letter-spacing:.06em;
  color:var(--pbx-faint);
  margin-bottom:6px;
}
.result-value{
  font-size:34px;
  font-weight:800;
  color:var(--green-dark);
  line-height:1.15;
  word-break:break-word;
}
.result-sub{
  font-size:13px;
  color:var(--muted);
  margin-top:6px;
  line-height:1.5;
}
.result-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:16px;
  margin-top:14px;
}
.result-grid .stat-label{font-size:11px;font-weight:800;letter-spacing:.04em;color:var(--pbx-faint);margin-bottom:4px;}
.result-grid .stat-value{font-size:20px;font-weight:800;color:var(--navy);}

/* FAQ */
.faq{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  margin-bottom:28px;
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:last-child{border-bottom:none;}
.faq-q{
  width:100%;
  background:none;
  border:none;
  text-align:left;
  padding:18px 22px;
  font-size:15px;
  font-weight:800;
  color:var(--text);
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  font-family:inherit;
}
.faq-q .plus{
  flex:0 0 auto;
  font-size:18px;
  font-weight:400;
  color:var(--muted);
  width:20px;
  text-align:center;
}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .2s ease, padding .2s ease;
  padding:0 22px;
  font-size:14px;
  color:var(--muted);
  line-height:1.6;
}
.faq-item.open .faq-a{max-height:260px;padding:0 22px 18px;}

/* related tools + hub */
.related-label{
  font-size:11px;
  font-weight:800;
  letter-spacing:.06em;
  color:var(--pbx-faint);
  margin-bottom:12px;
}
.related-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px;}
.related-pill{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:12px;
  padding:12px 16px;
  font-weight:700;
  font-size:14px;
  display:flex;
  align-items:center;
  gap:8px;
  transition:border-color .15s,background .15s;
}
.related-pill:hover{border-color:var(--green);background:var(--pbx-input);}
.related-pill .arrow{color:var(--green);font-weight:800;}
.related-pill.current{
  background:var(--olive);
  border-color:transparent;
  color:var(--olive-text);
  pointer-events:none;
}
.related-pill.current .arrow{display:none;}

.hub-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:16px;
  margin-bottom:28px;
}
.hub-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;
  transition:border-color .15s,transform .15s;
}
.hub-card:hover{border-color:var(--green);transform:translateY(-2px);}
.hub-card .hub-kicker{font-size:11px;font-weight:800;letter-spacing:.05em;color:var(--pbx-faint);margin-bottom:6px;}
.hub-card h3{margin:0 0 6px;font-size:16px;font-weight:800;}
.hub-card p{margin:0;font-size:13px;color:var(--muted);line-height:1.5;}

@media (max-width:1180px){
  .layout{grid-template-columns:1fr;}
  .col-ads{display:none;}
}
@media (max-width:720px){
  header.site{padding:14px 18px;}
  .layout{padding:24px 16px 60px;}
  .page-head h1{font-size:28px;}
  .field-row{flex-direction:column;}
}