/* Onda — shared stylesheet
   Tokens mirror lib/theme.ts so the site and the app read as one product. */

:root {
  --blue: #2563EB;
  --blue-deep: #1E3A8A;
  --blue-tint: #EFF4FE;
  --paper: #FCFCFA;
  --ink: #1C1917;
  --ink-soft: #57534E;
  --ink-faint: #A8A29E;
  --rule: #E7E5E4;

  --sheet-radius: 32px;
  --measure: 34rem;

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
    Inter, system-ui, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--blue);
  -webkit-font-smoothing: antialiased;
}

.wrap {
  width: 100%;
  max-width: 60rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- Blue header ---------- */

.head {
  background: var(--blue);
  color: #fff;
  padding: 1.5rem 0 0;
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.5rem;
}

.mark {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  text-decoration: none;
}

.bar nav {
  display: flex;
  gap: 1.5rem;
  font-size: 0.9375rem;
}

.bar nav a {
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
}

.bar nav a:hover { color: #fff; }

.hero {
  padding: 4.5rem 0 5.5rem;
  color: #fff;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 700;
  max-width: 16ch;
}

.hero p {
  margin: 1.5rem 0 0;
  max-width: 30rem;
  font-size: 1.1875rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.85);
}

.hero .actions {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Compact header for the interior pages */
.head--slim .hero { padding: 3rem 0 4rem; }
.head--slim .hero h1 { font-size: clamp(2rem, 5vw, 3rem); }

/* ---------- Rising white sheet ---------- */

.sheet {
  background: var(--paper);
  border-radius: var(--sheet-radius) var(--sheet-radius) 0 0;
  margin-top: -2rem;
  padding: 3.5rem 0 1rem;
  position: relative;
}

section { padding: 2.75rem 0; }

section + section { border-top: 1px solid var(--rule); }

h2 {
  margin: 0 0 1.25rem;
  font-size: 1.75rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 650;
}

h3 {
  margin: 2rem 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 640;
  letter-spacing: -0.01em;
}

p, li { max-width: var(--measure); }

section p { margin: 0 0 1rem; color: var(--ink-soft); }

section p.lead { color: var(--ink); font-size: 1.0625rem; }

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

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.875rem 1.5rem;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn--light { background: #fff; color: var(--blue-deep); }
.btn--light:hover { background: #F1F5FF; }

.btn--ghost { border-color: rgba(255, 255, 255, 0.45); color: #fff; }
.btn--ghost:hover { border-color: #fff; }

.btn--solid { background: var(--blue); color: #fff; }
.btn--solid:hover { background: var(--blue-deep); }

/* ---------- Two-audience split ---------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.split h2 { margin-bottom: 0.75rem; }

.split .who {
  font-size: 0.9375rem;
  font-weight: 620;
  color: var(--blue);
  margin: 0 0 0.375rem;
}

/* ---------- Steps (a real sequence, so it is numbered) ---------- */

ol.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 1.5rem;
}

ol.steps li {
  counter-increment: step;
  padding-left: 2.75rem;
  position: relative;
  max-width: 38rem;
}

ol.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.0625rem;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 999px;
  background: var(--blue-tint);
  color: var(--blue-deep);
  font-size: 0.875rem;
  font-weight: 650;
  display: grid;
  place-items: center;
}

ol.steps strong { font-weight: 640; display: block; }
ol.steps span { color: var(--ink-soft); }

/* ---------- Legal / long-form text ---------- */

.doc { padding-bottom: 3rem; }
.doc p, .doc li { color: var(--ink-soft); }
.doc ul { padding-left: 1.125rem; margin: 0 0 1rem; }
.doc li { margin-bottom: 0.5rem; }
.doc .updated { color: var(--ink-faint); font-size: 0.9375rem; }

.callout {
  background: var(--blue-tint);
  border-radius: 16px;
  padding: 1.25rem 1.375rem;
  margin: 0 0 1.5rem;
  max-width: 38rem;
}

.callout p { margin: 0; color: var(--ink); }

/* ---------- Footer ---------- */

footer {
  background: var(--paper);
  border-top: 1px solid var(--rule);
  padding: 2.5rem 0 3.5rem;
  font-size: 0.9375rem;
  color: var(--ink-faint);
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

footer nav a { color: var(--ink-soft); text-decoration: none; }
footer nav a:hover { color: var(--blue); }

footer p { margin: 0.25rem 0; max-width: var(--measure); }

/* ---------- Responsive ---------- */

@media (max-width: 46rem) {
  .split { grid-template-columns: 1fr; gap: 2rem; }
  .bar nav { gap: 1rem; font-size: 0.875rem; }
  .hero { padding: 3.25rem 0 4.5rem; }
}

@media (max-width: 26rem) {
  .bar nav a[data-optional] { display: none; }
}

/* ---------- Accessibility floor ---------- */

a:focus-visible,
.btn:focus-visible {
  outline: 3px solid #FDE68A;
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}