/* PDF Signer site. Same design system as the app: docs/04-UX-UI-SPEC.md section 2.
   No web fonts, no scripts, no trackers. A privacy page that loads a tracker is a lie. */

:root {
  --primary: #1f62e9;
  --primary-pressed: #1749b8;
  --primary-tint: #e8f0fe;
  --primary-border: #c7d7f7;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-alt: #f8faff;
  --border: #e6eaf2;
  --text: #111827;
  --text-2: #6b7280;
  --text-3: #9aa3b2;
  --success: #22c55e;
  --success-tint: #e7f8ee;
  --danger: #e8453c;
  --radius: 16px;
  --shadow: 0 4px 16px rgba(17, 24, 39, 0.06);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #4c86ff;
    --primary-pressed: #3a6fe0;
    --primary-tint: #17233c;
    --primary-border: #2b4272;
    --bg: #0e1420;
    --surface: #161e2e;
    --surface-alt: #1b2536;
    --border: #26314a;
    --text: #f3f5f9;
    --text-2: #a3aec2;
    --text-3: #6c7a93;
    --success-tint: #12301f;
    --shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

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

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
.wrap-wide { max-width: 980px; margin: 0 auto; padding: 0 20px; }

/* ------------------------------------------------------------------ header + footer */

header {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  font-size: 17px;
}

.brand img { width: 32px; height: 32px; border-radius: 8px; display: block; }

nav a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 15px;
  margin-left: 18px;
}

nav a:hover { color: var(--primary); }

footer {
  margin-top: 64px;
  padding: 32px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--text-3);
  font-size: 14px;
}

footer a { color: var(--text-2); text-decoration: none; }
footer a:hover { color: var(--primary); }
.foot-links { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 12px; }

/* --------------------------------------------------------------------------- hero */

.hero { padding: 64px 0 8px; text-align: center; }

.hero img.mark { width: 96px; height: 96px; border-radius: 22px; box-shadow: var(--shadow); }

h1 {
  font-size: clamp(30px, 6vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 24px 0 12px;
}

.lede { font-size: 18px; color: var(--text-2); margin: 0 auto; max-width: 560px; }

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.badges li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 14px;
  color: var(--text-2);
}

.badges li strong { color: var(--text); font-weight: 600; }

.cta { margin-top: 32px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: 14px;
  box-shadow: 0 6px 16px rgba(31, 98, 233, 0.28);
}

.btn:hover { background: var(--primary-pressed); }

.btn.ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}

.soon { font-size: 14px; color: var(--text-3); margin-top: 14px; }

/* -------------------------------------------------------------------------- cards */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin: 48px 0 0;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.card h3 { margin: 14px 0 6px; font-size: 17px; }
.card p { margin: 0; color: var(--text-2); font-size: 15px; }

.chip {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--primary-tint);
  display: flex;
  align-items: center;
  justify-content: center;
}

.chip svg { width: 20px; height: 20px; stroke: var(--primary); fill: none; stroke-width: 2; }
.chip.green { background: var(--success-tint); }
.chip.green svg { stroke: var(--success); }

/* --------------------------------------------------------------------------- steps */

ol.steps { counter-reset: step; list-style: none; padding: 0; margin: 32px 0 0; }

ol.steps li {
  counter-increment: step;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px 20px 68px;
  position: relative;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}

ol.steps li::before {
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 20px;
  width: 32px;
  height: 32px;
  border-radius: 16px;
  background: var(--primary-tint);
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

ol.steps li strong { display: block; margin-bottom: 4px; }
ol.steps li span { color: var(--text-2); }

/* -------------------------------------------------------------------- long content */

.doc { padding: 40px 0 0; }
.doc h1 { text-align: left; font-size: clamp(28px, 5vw, 34px); }
.doc h2 { font-size: 20px; margin: 40px 0 8px; }
.doc h3 { font-size: 17px; margin: 28px 0 6px; }
.doc p, .doc li { color: var(--text-2); }
.doc strong { color: var(--text); }
.doc a { color: var(--primary); }
.doc ul { padding-left: 20px; }
.doc li { margin-bottom: 8px; }
.updated { color: var(--text-3); font-size: 14px; margin-top: -4px; }

.note {
  background: var(--primary-tint);
  border: 1px solid var(--primary-border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 24px 0;
}

.note p { color: var(--text); margin: 0; }

.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--success);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 20px 0;
}

.callout p { margin: 0; }

table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15px; }
th, td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--text); font-weight: 600; }
td { color: var(--text-2); vertical-align: top; }

.center { text-align: center; }
h2.section { text-align: center; margin: 64px 0 0; font-size: clamp(24px, 4vw, 30px); }
h2.section + p.lede { margin-top: 10px; }