/* Shared stylesheet for I Want Invoice static content/landing pages.
   Self-contained (own tokens + fonts) so pages don't depend on index.html. */

:root {
  --bg: #fbfaf7;
  --bg-2: #f5f3ee;
  --surface: #ffffff;
  --ink: #18181b;
  --ink-2: #4a4a4f;
  --ink-3: #84848a;
  --ink-4: #b8b8bd;
  --hairline: rgba(20, 18, 14, 0.08);
  --hairline-2: rgba(20, 18, 14, 0.12);
  --radius: 12px;
  --font-sans: 'Geist', system-ui, -apple-system, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, monospace;
  --maxw: 760px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-2);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--ink); }

/* Nav */
.nav {
  border-bottom: 1px solid var(--hairline);
  background: var(--surface);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-inner img { height: 38px; width: auto; display: block; }
.nav-cta {
  background: var(--ink);
  color: var(--surface);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  padding: 9px 16px;
  border-radius: var(--radius);
}

/* Content container */
main { max-width: var(--maxw); margin: 0 auto; padding: 40px 24px 72px; }

.breadcrumb {
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 24px;
  font-family: var(--font-mono);
}
.breadcrumb a { color: var(--ink-3); text-decoration: none; }
.breadcrumb a:hover { color: var(--ink); }

h1 {
  font-family: var(--font-sans);
  font-size: 38px;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 16px;
}
h2 {
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 40px 0 12px;
}
h3 { font-size: 18px; color: var(--ink); margin: 28px 0 8px; }
.lead { font-size: 18px; color: var(--ink-2); margin: 0 0 24px; }

p { margin: 0 0 16px; }
ul, ol { padding-left: 22px; }
li { margin: 8px 0; }
strong { color: var(--ink); }

/* CTA */
.cta {
  display: inline-block;
  background: var(--ink);
  color: var(--surface);
  text-decoration: none;
  font-weight: 600;
  padding: 13px 22px;
  border-radius: var(--radius);
  margin: 8px 0 24px;
}
.cta-row { margin: 28px 0; }

/* Cards / callouts */
.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 20px 0;
}

/* Template hub grid */
.tpl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}
.tpl-grid a {
  display: block;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 18px 20px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
}
.tpl-grid a span { display: block; margin-top: 6px; font-weight: 400; font-size: 14px; color: var(--ink-3); }
.tpl-grid a:hover { border-color: var(--hairline-2); }

/* Footer */
footer {
  border-top: 1px solid var(--hairline);
  background: var(--surface);
}
.foot-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--ink-4);
}
.foot-inner a { color: var(--ink-3); text-decoration: none; }
.foot-inner nav { display: flex; gap: 18px; flex-wrap: wrap; }

@media (max-width: 560px) {
  h1 { font-size: 30px; }
  main { padding: 28px 20px 56px; }
}