/* Workbench — small business tools. Pure static, no build step. */
:root{
  --bg:#ffffff; --ink:#16191d; --muted:#5b6470; --faint:#8a919c;
  --line:#e6e8eb; --panel:#f7f8f8; --panel2:#eef1f1;
  --accent:#0f766e; --accent-ink:#ffffff; --accent-soft:#e6f2f1;
  --warn:#9a3412; --warn-bg:#fef3ec;
  --radius:10px; --max:980px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:12px;top:12px;background:#111;color:#fff;padding:8px 12px;z-index:99}

/* header */
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;letter-spacing:-.01em}
.brand-mark{width:28px;height:28px;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:14px;font-weight:800;border-radius:6px}
.brand small{display:block;font-weight:400;color:var(--muted);font-size:12px;line-height:1.2;letter-spacing:0}
.nav{display:flex;gap:18px;font-size:14px}
.nav a{color:var(--muted)}
.nav a:hover{color:var(--ink);text-decoration:none}

/* hero */
.hero{padding:44px 0 28px;border-bottom:1px solid var(--line)}
.hero h1{font-size:38px;line-height:1.15;letter-spacing:-.02em;margin:0 0 12px;max-width:720px}
.hero p.lead{font-size:18px;color:var(--muted);margin:0 0 20px;max-width:720px}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px}
.pill{font-size:13px;border:1px solid var(--line);background:var(--panel);padding:5px 10px;border-radius:999px;color:var(--muted)}
.btn{display:inline-block;background:var(--ink);color:#fff;padding:10px 16px;border-radius:8px;font-weight:600;font-size:15px;border:1px solid var(--ink);cursor:pointer}
.btn:hover{text-decoration:none;background:#000}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-small{padding:8px 12px;font-size:14px}
.btn-accent{background:var(--accent);border-color:var(--accent)}
.eyebrow{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:10px}

/* sections */
.section{padding:32px 0}
.section h2{font-size:24px;letter-spacing:-.01em;margin:0 0 8px}
.section p.sub{color:var(--muted);margin:0 0 20px;max-width:720px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:18px;background:#fff;display:flex;flex-direction:column;gap:8px}
.card h3{margin:0;font-size:18px;line-height:1.3}
.card p{margin:0;color:var(--muted);font-size:14.5px;flex:1}
.card .meta{font-size:13px;color:var(--faint)}
.card .card-foot{margin-top:10px}
.tool-tag{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.list{margin:12px 0;padding-left:20px;color:var(--muted)}
.list li{margin-bottom:6px}
.two-col{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:start}
.panel{border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff}
.panel-light{background:var(--panel)}
.callout{border-left:3px solid var(--accent);background:var(--accent-soft);padding:14px 16px;border-radius:0 8px 8px 0;font-size:14.5px}
.note{font-size:13.5px;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:12px 14px}
.warn{font-size:13.5px;color:var(--warn);background:var(--warn-bg);border:1px solid #fed7aa;border-radius:8px;padding:12px 14px}

/* tool form */
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.field label span{font-weight:400;color:var(--muted);font-size:13px}
.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid #d1d5db;border-radius:8px;font-size:15px;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--accent);border-color:var(--accent)}
.field textarea{min-height:72px;resize:vertical}
.field .hint{font-size:13px;color:var(--muted);margin-top:4px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.result-box{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:18px}
.result-box h3{margin:0 0 12px;font-size:16px}
.big{font-size:32px;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.big small{font-size:14px;font-weight:400;color:var(--muted)}
.kv{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-top:1px dashed #dbe0e2;font-size:14.5px}
.kv:first-of-type{border-top:0}
.kv b{font-variant-numeric:tabular-nums}
.kv span{color:var(--muted)}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.copy-box{margin-top:12px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:12px;font-size:13.5px;white-space:pre-wrap}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:600}
.faq p{color:var(--muted);margin:8px 0 0}
.prose{max-width:760px}
.prose p{color:#333}
.prose h2{margin-top:28px}
.prose h3{margin-top:20px}
.prose ul{color:#333}

/* invoice */
.invoice{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff}
.invoice-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.invoice-head h2{margin:0;font-size:28px;letter-spacing:-.02em}
.inv-meta{text-align:right;font-size:13.5px;color:var(--muted)}
.inv-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0}
.inv-grid h4{margin:0 0 6px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--faint)}
.inv-grid p{margin:0;white-space:pre-wrap}
table.inv{width:100%;border-collapse:collapse;font-size:14.5px;margin:12px 0}
table.inv th{ text-align:left;border-bottom:2px solid var(--ink);padding:8px 6px;font-size:13px}
table.inv td{border-bottom:1px solid var(--line);padding:9px 6px;vertical-align:top}
table.inv td.num, table.inv th.num{text-align:right;font-variant-numeric:tabular-nums}
.totals{max-width:340px;margin-left:auto;font-size:14.5px}
.totals .kv b{font-variant-numeric:tabular-nums}
.totals .kv.total{border-top:2px solid var(--ink);font-weight:700}
.item-row{display:grid;grid-template-columns:1.6fr .7fr .9fr auto;gap:8px;margin-bottom:8px}
.item-row input{padding:9px 10px;border:1px solid #d1d5db;border-radius:8px;font-size:14px;width:100%}
.remove-btn{background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 10px;cursor:pointer}

/* recommended */
.reco{border:1px dashed #cbd5e1;border-radius:var(--radius);padding:16px;background:#fbfcfc}
.reco h3{margin:0 0 6px;font-size:16px}
.reco p{margin:0;color:var(--muted);font-size:14px}

/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:32px;padding:24px 0 36px;color:var(--muted);font-size:14px}
.site-footer .foot-grid{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.site-footer nav{display:flex;gap:16px;flex-wrap:wrap}
.site-footer a{color:var(--muted)}

@media (max-width:760px){
  .hero{padding:32px 0 22px}
  .hero h1{font-size:30px}
  .grid3{grid-template-columns:1fr}
  .two-col{grid-template-columns:1fr}
  .nav{display:none}
  .row2{grid-template-columns:1fr}
  .inv-grid{grid-template-columns:1fr}
  .invoice-head{flex-direction:column}
  .inv-meta{text-align:left}
  .item-row{grid-template-columns:1fr 1fr}
}
@media print{
  .site-header,.site-footer,.no-print{display:none!important}
  body{font-size:13px}
  .invoice{border:0;padding:0}
  .two-col{grid-template-columns:1fr}
}