/* ============================================================
   INVOICEKIT — design tokens
   Concept: clean, trustworthy, professional — the invoice itself is the star
   ============================================================ */
:root{
  --bg:#F7F9F8;
  --card:#FFFFFF;
  --line:#E3E8E6;
  --ink:#16211D;
  --ink-soft:#4C5A54;
  --ink-faint:#8B9691;

  --emerald:#0F9D6E;
  --emerald-bright:#12B67F;
  --slate:#1E3A34;

  --radius-s:8px;
  --radius-m:14px;
  --radius-l:20px;

  --font-display:'Manrope', sans-serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'JetBrains Mono', monospace;
}

*{box-sizing:border-box;}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-body);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
.container{max-width:1040px;margin:0 auto;padding:0 24px;}
h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.2;margin:0 0 .5em;}
h1{font-size:clamp(28px,4vw,40px);}
h2{font-size:clamp(19px,2.4vw,24px);}
p{margin:0 0 1em;color:var(--ink-soft);}
:focus-visible{outline:2px solid var(--emerald);outline-offset:2px;}

.site-header{padding:18px 0;border-bottom:1px solid var(--line);background:var(--card);}
.header-inner{display:flex;align-items:center;justify-content:space-between;}
.logo{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:700;font-size:21px;}
.logo-mark{width:26px;height:26px;}
.header-links{display:flex;gap:20px;font-size:14px;font-weight:600;color:var(--ink-soft);}
.header-links a:hover{color:var(--emerald);}

.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:var(--radius-s);
  font-weight:700;font-size:14.5px;border:1.5px solid transparent;cursor:pointer;transition:all .15s ease;
  font-family:var(--font-body);
}
.btn-emerald{background:var(--emerald);color:#fff;}
.btn-emerald:hover{background:var(--emerald-bright);box-shadow:0 4px 14px #0f9d6e33;}
.btn-ghost{background:var(--card);color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--emerald);color:var(--emerald);}

.hero{padding:36px 0 12px;text-align:center;}
.hero .eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;
  color:var(--emerald);background:#0f9d6e14;padding:6px 14px;border-radius:999px;margin-bottom:14px;}
.hero .lead{font-size:16.5px;max-width:56ch;margin:0 auto;}

.builder-layout{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start;margin:28px 0;}
@media (max-width:900px){.builder-layout{grid-template-columns:1fr;}}

.form-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);padding:26px;}
.form-section{margin-bottom:22px;}
.form-section h3{font-size:14px;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-faint);margin-bottom:12px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px;}
.field{margin-bottom:10px;}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-soft);margin-bottom:5px;}
.field input, .field textarea{
  width:100%;padding:9px 12px;border-radius:var(--radius-s);border:1.5px solid var(--line);
  font-size:14px;font-family:var(--font-body);background:var(--bg);color:var(--ink);
}
.field textarea{resize:vertical;min-height:60px;}

.line-item-row{display:grid;grid-template-columns:1fr 60px 90px 90px 30px;gap:8px;margin-bottom:8px;align-items:center;}
.line-item-row input{padding:8px 10px;border-radius:6px;border:1.5px solid var(--line);font-size:13px;background:var(--bg);color:var(--ink);}
.line-item-total{font-family:var(--font-mono);font-size:13px;text-align:right;color:var(--ink-soft);}
.remove-line{background:none;border:none;color:var(--ink-faint);cursor:pointer;font-size:16px;}
.remove-line:hover{color:#DC2626;}
.line-item-header{display:grid;grid-template-columns:1fr 60px 90px 90px 30px;gap:8px;font-size:11px;
  text-transform:uppercase;color:var(--ink-faint);margin-bottom:6px;font-weight:600;}

.totals-box{margin-top:16px;padding-top:16px;border-top:1.5px solid var(--line);}
.totals-row{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px;color:var(--ink-soft);}
.totals-row.grand{font-size:18px;font-weight:700;color:var(--ink);border-top:1.5px solid var(--line);padding-top:10px;margin-top:6px;}
.totals-row input{width:70px;padding:5px 8px;border-radius:6px;border:1.5px solid var(--line);font-size:13px;text-align:right;}

.preview-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-l);padding:0;overflow:hidden;position:sticky;top:20px;}
.preview-header{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;}
.preview-header h3{margin:0;font-size:15px;}
.invoice-preview{padding:36px;font-size:13px;color:var(--ink);min-height:400px;}
.invoice-preview .inv-title{font-family:var(--font-display);font-size:26px;font-weight:800;color:var(--slate);margin-bottom:4px;}
.invoice-preview .inv-meta{color:var(--ink-faint);font-size:12px;margin-bottom:24px;}
.invoice-preview .inv-parties{display:flex;justify-content:space-between;margin-bottom:24px;}
.invoice-preview .inv-parties div{max-width:45%;}
.invoice-preview .inv-parties h4{font-size:11px;text-transform:uppercase;color:var(--ink-faint);margin-bottom:6px;}
.invoice-preview table{width:100%;border-collapse:collapse;margin-bottom:20px;}
.invoice-preview th{text-align:left;font-size:11px;text-transform:uppercase;color:var(--ink-faint);padding:6px 8px;border-bottom:1.5px solid var(--line);}
.invoice-preview td{padding:8px;border-bottom:1px solid var(--line);font-size:12.5px;}
.invoice-preview .num{text-align:right;}
.invoice-preview .inv-totals{margin-left:auto;width:220px;}
.invoice-preview .inv-totals-row{display:flex;justify-content:space-between;padding:4px 0;font-size:12.5px;}
.invoice-preview .inv-totals-row.grand{font-weight:800;font-size:15px;border-top:1.5px solid var(--ink);padding-top:8px;margin-top:4px;}

.ad-slot{border:1px dashed var(--line);border-radius:var(--radius-m);padding:22px;text-align:center;
  color:var(--ink-faint);font-size:12px;margin:30px 0;}

.side-ad-rail{
  position:fixed;top:100px;width:160px;height:600px;display:none;
  border:1px dashed var(--line);border-radius:var(--radius-m);background:var(--card);
  align-items:center;justify-content:center;text-align:center;padding:16px;
  color:var(--ink-faint);font-size:11px;line-height:1.5;z-index:10;
}
.side-ad-rail.left{left:24px;}
.side-ad-rail.right{right:24px;}
@media (min-width:1500px){.side-ad-rail{display:flex;}}

.site-footer{border-top:1px solid var(--line);margin-top:50px;padding:30px 0;}
.footer-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--ink-faint);}
.footer-inner a{margin-right:16px;}
.footer-inner a:hover{color:var(--emerald);}

.legal-page{max-width:680px;padding:36px 0 60px;}
.legal-page h2{margin-top:30px;font-size:19px;}
.breadcrumb{padding:18px 0 0;font-size:13px;color:var(--ink-faint);}
.breadcrumb a{color:var(--ink-soft);}
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s ease, transform .5s ease;}
.reveal.in{opacity:1;transform:none;}