/* PaperFix AI — public website styles.
   Single file, mobile-first, no JS. Calm blue/white to match the app. */

:root {
  --brand: #1E5AA8;
  --brand-dark: #15407A;
  --brand-tint: #E8F0FB;
  --bg: #F4F8FC;
  --surface: #FFFFFF;
  --border: #D9E2EC;
  --text: #0F2440;
  --text-muted: #4A5C73;
  --text-subtle: #6B7B91;
  --caution-bg: #FFF8E6;
  --caution-border: #F2C770;
  --caution-text: #7A5300;
  --radius: 12px;
  --max-width: 720px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- Layout shell --- */
.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 20px 64px;
}

/* --- Top nav --- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.nav .brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
}
.nav .brand span { color: var(--brand); }
.nav .links {
  display: flex;
  gap: 18px;
  font-size: 15px;
}
.nav .links a { color: var(--text-muted); font-weight: 500; }
.nav .links a:hover { color: var(--brand); }

/* --- Hero (home only) --- */
.hero {
  margin: 40px 0 24px;
  text-align: center;
}
.hero h1 {
  font-size: 34px;
  line-height: 1.2;
  margin: 0 0 12px;
  font-weight: 700;
}
.hero h1 span { color: var(--brand); }
.hero .lede {
  font-size: 19px;
  color: var(--text-muted);
  margin: 0 auto 28px;
  max-width: 520px;
}
.cta-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 16px;
}
.btn {
  display: inline-block;
  padding: 12px 18px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  border: 1.5px solid var(--brand);
  background: var(--surface);
  color: var(--brand);
  text-decoration: none;
}
.btn.primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}
.btn:hover { text-decoration: none; opacity: 0.92; }

/* --- Page heading (privacy / terms / support) --- */
.page-head {
  margin: 28px 0 8px;
}
.page-head h1 {
  font-size: 28px;
  margin: 0 0 6px;
  font-weight: 700;
}
.page-head .meta {
  font-size: 13px;
  color: var(--text-subtle);
}

/* --- Cards / sections --- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 16px 0;
}
.callout {
  background: var(--brand-tint);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 16px 0;
  color: var(--brand-dark);
  font-size: 15px;
}
.caution {
  background: var(--caution-bg);
  border: 1px solid var(--caution-border);
  color: var(--caution-text);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 16px 0;
  font-size: 15px;
}

/* --- Typography --- */
h2 {
  font-size: 20px;
  margin: 28px 0 8px;
  font-weight: 700;
}
h3 {
  font-size: 16px;
  margin: 20px 0 4px;
  font-weight: 700;
}
p { margin: 8px 0 12px; }
ul { padding-left: 22px; margin: 8px 0 12px; }
li { margin: 4px 0; }
strong { font-weight: 700; }

/* --- Footer --- */
.foot {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-subtle);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.foot a { color: var(--text-subtle); }
.foot a:hover { color: var(--brand); }

/* --- Mobile --- */
@media (max-width: 480px) {
  body { font-size: 16px; }
  .hero h1 { font-size: 28px; }
  .hero .lede { font-size: 17px; }
  .nav .links { gap: 14px; font-size: 14px; }
  .wrap { padding: 20px 16px 48px; }
}