:root{
  --ink:#16233c;
  --muted:#5b6b85;
  --line:#dbe2ee;
  --paper:#ffffff;
  --wash:#f5f7fb;
  --accent:#1d4ed8;
  --accent-ink:#ffffff;
  --radius:10px;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--wash);
  font-size:16px;
  line-height:1.5;
}

.wrap{max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---- header ---- */
.site-head{padding:28px 0 18px;border-bottom:1px solid var(--line);background:var(--paper);}
.site-head .wordmark{font-size:20px;font-weight:700;letter-spacing:-.01em;}
.site-head .wordmark b{font-weight:800;}
.site-head .tag{margin:6px 0 0;color:var(--muted);font-size:14px;}

/* ---- layout ---- */
.layout{
  display:grid;
  grid-template-columns:minmax(320px,420px) 1fr;
  gap:28px;
  align-items:start;
  padding:28px 20px 60px;
}

@media (max-width:860px){
  .layout{grid-template-columns:1fr;}
}

/* ---- form ---- */
.panel-form{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:20px;
}
fieldset{
  border:none;
  border-top:1px solid var(--line);
  padding:16px 0;
  margin:0;
}
fieldset:first-child{border-top:none;padding-top:0;}
legend{
  font-weight:700;
  font-size:14px;
  color:var(--ink);
  padding:0 0 10px;
  width:100%;
}
label{
  display:block;
  font-size:13px;
  color:var(--muted);
  margin:10px 0 0;
}
label .opt{font-weight:400;color:var(--muted);opacity:.75;}
input[type="text"],input[type="email"],input[type="date"],input[type="number"],select,textarea{
  display:block;
  width:100%;
  margin-top:5px;
  padding:9px 10px;
  border:1px solid var(--line);
  border-radius:8px;
  font-size:14px;
  font-family:inherit;
  color:var(--ink);
  background:var(--paper);
}
textarea{resize:vertical;}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:1px;}

.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.checkline{
  display:flex;align-items:center;gap:8px;margin-top:14px;font-size:13px;color:var(--ink);
}
.checkline input{margin:0;}

.fieldset-hint{
  font-size:12px;color:var(--muted);margin:0 0 4px;
}

/* ---- ways-to-pay rows ---- */
.pay-row{
  display:grid;
  grid-template-columns:150px 1fr;
  gap:10px;
  align-items:center;
  margin-top:8px;
}
.pay-row .checkline{margin-top:0;white-space:nowrap;}
.pay-row input[type="text"]{margin-top:0;font-size:13px;}

/* ---- payment schedule extra fields ---- */
.sched-extra{margin-top:10px;}

/* ---- line items in the form ---- */
.item-row{
  display:grid;
  grid-template-columns:1fr 54px 74px 28px;
  gap:6px;
  margin-top:8px;
  align-items:center;
}
.item-row input{margin-top:0;font-size:13px;padding:7px 8px;}
.item-remove{
  border:none;background:none;color:var(--muted);cursor:pointer;font-size:16px;line-height:1;padding:4px;
}
.item-remove:hover{color:#b42318;}

.btn-add{
  margin-top:12px;
  border:1px dashed var(--line);
  background:var(--wash);
  color:var(--accent);
  border-radius:8px;
  padding:8px 12px;
  font-size:13px;
  font-weight:600;
  cursor:pointer;
  width:100%;
}
.btn-add:hover{background:#eef2ff;}

.tax-row{margin-top:16px;}
.tax-row input{max-width:120px;display:inline-block;}

/* ---- actions ---- */
.actions{display:flex;gap:10px;margin-top:20px;}
.btn-primary,.btn-secondary{
  flex:1;
  padding:11px 14px;
  border-radius:8px;
  font-size:14px;
  font-weight:700;
  cursor:pointer;
  border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:var(--accent-ink);}
.btn-primary:hover{background:#1a41b8;}
.btn-secondary{background:var(--paper);color:var(--ink);border-color:var(--line);}
.btn-secondary:hover{background:var(--wash);}

.privacy-note{
  margin-top:16px;
  font-size:12px;
  color:var(--muted);
  line-height:1.5;
}

/* ---- invoice preview ---- */
.panel-preview{display:flex;justify-content:center;}
.invoice{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:44px 40px;
  width:100%;
  max-width:720px;
  min-height:640px;
}

.inv-head{display:flex;justify-content:space-between;gap:20px;padding-bottom:24px;border-bottom:2px solid var(--ink);}
.inv-biz-name{font-size:17px;font-weight:800;}
.inv-muted{color:var(--muted);font-size:13px;margin-top:2px;white-space:pre-line;}
.inv-meta{text-align:right;min-width:160px;}
.inv-title{font-size:22px;font-weight:800;letter-spacing:.02em;text-transform:uppercase;color:var(--accent);}
.inv-meta-row{display:flex;justify-content:space-between;gap:14px;font-size:13px;margin-top:8px;color:var(--muted);}
.inv-meta-row b{color:var(--ink);}

.inv-to{padding:22px 0;}
.inv-label{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:6px;font-weight:700;}

.inv-table{width:100%;border-collapse:collapse;margin-top:6px;}
.inv-table th{
  text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.04em;
  color:var(--muted);border-bottom:1px solid var(--line);padding:8px 6px;font-weight:700;
}
.inv-table th.num,.inv-table td.num{text-align:right;}
.inv-table td{padding:10px 6px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top;}
.inv-table td.desc{white-space:pre-line;}

.inv-totals{margin-top:14px;margin-left:auto;width:260px;}
.inv-totals-row{display:flex;justify-content:space-between;font-size:14px;padding:6px 0;color:var(--muted);}
.inv-totals-row b{color:var(--ink);}
.inv-total{border-top:2px solid var(--ink);margin-top:4px;padding-top:10px;font-size:16px;}
.inv-total span,.inv-total b{color:var(--ink);font-weight:800;}

.inv-extra{margin-top:22px;padding-top:16px;border-top:1px solid var(--line);}
.inv-list{margin:0;padding:0 0 0 18px;font-size:13px;color:var(--ink);}
.inv-list li{margin-top:4px;}
.inv-list b{font-weight:700;}

.inv-sched-row{display:grid;grid-template-columns:1fr 92px 84px;gap:10px;font-size:13px;padding:5px 0;color:var(--muted);align-items:start;}
.inv-sched-row b{color:var(--ink);text-align:right;}
.inv-sched-row span.sched-label{color:var(--ink);font-weight:600;}
.inv-sched-row span:nth-child(2){text-align:right;color:var(--muted);}

.inv-notes{margin-top:28px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);white-space:pre-line;}
.inv-footer{margin-top:36px;font-size:11px;color:var(--muted);text-align:center;opacity:.8;}

/* ---- print ---- */
@media print{
  body{background:#fff;}
  .no-print{display:none !important;}
  .layout{display:block;padding:0;}
  .panel-preview{justify-content:flex-start;}
  .invoice{border:none;border-radius:0;padding:0;max-width:none;min-height:0;}
  @page{margin:0.6in;}
}