/* ai.rinsepay.app — AI-facing documentation site.
   Brand palette: teal #245f73 · brown #733e24 · surface #F2F0EF
   Tokens copied from sales-site/styles.css for brand parity. */

:root {
  --teal: #245f73;
  --teal-light: #347d96;
  --teal-bg: #dceef4;
  --brown: #733e24;
  --brown-light: #8b5236;
  --brown-bg: #f0e4db;
  --surface: #f2f0ef;
  --surface-2: #e8e6e4;
  --ink: #1a1a1a;
  --ink-2: #4a4a4a;
  --ink-3: #666666;
  --border: #c8c8c8;
  --border-light: #dddcda;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --container: 880px;
  --font: system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.65;
  font-size: 17px;
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* --- Nav --- */
.nav {
  background: #fff;
  border-bottom: 1px solid var(--border-light);
  padding: 14px 0;
}
.nav .container { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.nav a { text-decoration: none; }
.nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.nav-links a { color: var(--teal); font-weight: 600; font-size: 15px; }
.nav-links a:hover { color: var(--teal-light); }

/* --- Hero --- */
.hero { padding: 48px 0 36px; }
.hero h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.5px; }
.hero .accent { color: var(--brown); }
.hero p.lede { margin-top: 14px; font-size: 19px; color: var(--ink-2); max-width: 64ch; }
.hero .meta { margin-top: 12px; font-size: 14px; color: var(--ink-3); }

.machine-box {
  margin-top: 24px;
  background: var(--teal-bg);
  border: 1px solid var(--teal);
  border-radius: var(--r-md);
  padding: 16px 20px;
  font-size: 15px;
}
.machine-box code {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 1px 7px;
  font-size: 14px;
}
.machine-box a { color: var(--teal); font-weight: 700; }

/* --- Sections --- */
main section { padding: 30px 0 6px; }
main section:last-of-type { padding-bottom: 40px; }

h2 {
  font-size: 26px;
  letter-spacing: -0.3px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--brown-bg);
  margin-bottom: 18px;
}
h2 .accent { color: var(--brown); }
h3 { font-size: 19px; margin: 26px 0 8px; color: var(--teal); }
p { margin: 10px 0; color: var(--ink-2); }
p strong, li strong { color: var(--ink); }
ul, ol { margin: 10px 0 16px 24px; color: var(--ink-2); }
li { margin: 6px 0; }
a { color: var(--teal); }
a:hover { color: var(--teal-light); }

.card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--r-lg);
  padding: 22px 26px;
  margin: 16px 0;
}

.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0; }
.fact {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--r-md);
  padding: 14px 18px;
  font-size: 15px;
}
.fact b { display: block; color: var(--brown); font-size: 13px; text-transform: uppercase; letter-spacing: 0.4px; margin-bottom: 3px; }
@media (max-width: 640px) { .facts { grid-template-columns: 1fr; } .hero h1 { font-size: 27px; } }

/* --- Footer --- */
footer {
  background: #fff;
  border-top: 1px solid var(--border-light);
  padding: 26px 0 34px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--ink-3);
}
footer .container { display: flex; flex-direction: column; gap: 8px; }
footer a { color: var(--teal); }