/* VivaRemind marketing + policy site.
   Palette mirrors the elder app theme (Theme.kt): WarmBlue on warm off-white. */

:root {
  --blue: #3b6eea;
  --blue-deep: #2c53b8;
  --blue-container: #dce7ff;
  --bg: #faf7f2;
  --surface: #ffffff;
  --ink: #1a1c1e;
  --muted: #5a6270;
  --outline: #e1e3e8;
  --ok: #2e7d32;
  --radius: 20px;
  --maxw: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --blue: #7d9dff;
    --blue-deep: #5b7fe8;
    --blue-container: #1f2c4a;
    --bg: #121316;
    --surface: #1a1c1e;
    --ink: #e8e9ec;
    --muted: #a3aab6;
    --outline: #33363c;
  }
}

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

html { scroll-behavior: smooth; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Nav ---------- */

.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--outline);
}
.nav .wrap {
  display: flex; align-items: center; gap: 24px;
  height: 64px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 20px; color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand img,
.brand svg { width: 30px; height: 30px; flex-shrink: 0; }
.nav-links { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 600; font-size: 16px; }
.nav-links a:hover { color: var(--blue); text-decoration: none; }
.lang-switch {
  border: 1.5px solid var(--outline); border-radius: 999px;
  padding: 4px 14px; font-weight: 700; font-size: 15px; color: var(--ink) !important;
}
.lang-switch:hover { border-color: var(--blue); }

@media (max-width: 640px) {
  .nav-links a:not(.lang-switch) { display: none; }
}

/* ---------- Hero ---------- */

.hero { padding: 88px 0 64px; text-align: center; }
.hero h1 {
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.12; font-weight: 800; letter-spacing: -0.02em;
  max-width: 17ch; margin: 0 auto;
}
.hero h1 em { color: var(--blue); font-style: normal; }
.hero p.lede {
  font-size: clamp(18px, 2.4vw, 22px); color: var(--muted);
  max-width: 52ch; margin: 20px auto 0;
}
.cta-row {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
  margin-top: 36px;
}
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  border-radius: 16px; padding: 14px 26px;
  font-weight: 700; font-size: 17px;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 6px 20px color-mix(in srgb, var(--blue) 35%, transparent); }
.btn-primary:hover { background: var(--blue-deep); }
.btn-ghost { border: 2px solid var(--outline); color: var(--ink); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }

.disclaimer-strip {
  margin-top: 40px; display: inline-block;
  background: var(--blue-container); color: var(--ink);
  border-radius: 999px; padding: 8px 22px;
  font-size: 15px; font-weight: 600;
}

/* ---------- Sections ---------- */

.section { padding: 72px 0; }
.section.alt { background: var(--surface); border-block: 1px solid var(--outline); }
.section h2 {
  font-size: clamp(26px, 4vw, 36px); font-weight: 800; letter-spacing: -0.01em;
  text-align: center; margin-bottom: 12px;
}
.section p.sub { text-align: center; color: var(--muted); max-width: 56ch; margin: 0 auto 48px; }

.grid { display: grid; gap: 24px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface); border: 1px solid var(--outline);
  border-radius: var(--radius); padding: 28px;
}
.section.alt .card { background: var(--bg); }
.card h3 { font-size: 21px; font-weight: 800; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 16.5px; }
.card ul { color: var(--muted); font-size: 16.5px; padding-left: 20px; margin-top: 10px; }
.card li { margin: 6px 0; }

.step-num {
  width: 44px; height: 44px; border-radius: 14px;
  background: var(--blue-container); color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 20px; margin-bottom: 16px;
}

.app-badge {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 18px; padding: 10px 18px; border-radius: 12px;
  background: var(--ink); color: var(--bg); font-weight: 700; font-size: 15px;
}
@media (prefers-color-scheme: dark) {
  .app-badge { background: var(--blue); color: #fff; }
}
.app-badge:hover { text-decoration: none; opacity: 0.9; }

.icon-dot {
  width: 48px; height: 48px; border-radius: 999px;
  background: var(--blue-container);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px; font-size: 22px;
}

/* ---------- Prose (policy pages) ---------- */

.prose { max-width: 760px; margin: 0 auto; padding: 64px 24px 96px; }
.prose h1 { font-size: clamp(30px, 5vw, 42px); font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; }
.prose .meta { color: var(--muted); margin: 12px 0 40px; font-size: 16px; }
.prose h2 { font-size: 24px; font-weight: 800; margin: 44px 0 12px; }
.prose h3 { font-size: 19px; font-weight: 700; margin: 28px 0 8px; }
.prose p, .prose li { color: var(--ink); }
.prose ul, .prose ol { padding-left: 24px; margin: 12px 0; }
.prose li { margin: 8px 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 16px; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border: 1px solid var(--outline); vertical-align: top; }
.prose th { background: var(--surface); }
.callout {
  background: var(--blue-container); border-radius: var(--radius);
  padding: 20px 24px; margin: 24px 0; font-weight: 600;
}
.callout.warn { background: #fdecea; color: #5f2120; }
@media (prefers-color-scheme: dark) {
  .callout.warn { background: #3a2020; color: #f4c7c3; }
}

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

.footer { border-top: 1px solid var(--outline); padding: 48px 0 64px; }
.footer .wrap { display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; }
.footer nav { display: flex; flex-direction: column; gap: 10px; }
.footer nav strong { font-size: 15px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 4px; }
.footer a { color: var(--ink); font-size: 16px; }
.footer .fineprint { flex-basis: 100%; color: var(--muted); font-size: 14.5px; margin-top: 8px; }