/* Página de fallback dos links do app (ver goapp/chat.html). */
:root {
  --bg: #F8FBFA;
  --card: #FFFFFF;
  --text: #3D5C54;
  --muted: #527A6E;
  --accent: #540D6E;
  --accent-text: #FFFFFF;
  --border: #E4F0EC;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16201D;
    --card: #1F2C28;
    --text: #E4F0EC;
    --muted: #C4E5DA;
    --accent: #CCD500;
    --accent-text: #16201D;
    --border: #2E403B;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px 24px;
  text-align: center;
}
.logo { width: 72px; height: 72px; border-radius: 16px; }
h1 { font-size: 22px; margin: 16px 0 8px; }
p { color: var(--muted); line-height: 1.5; margin: 0 0 24px; }
.stores { display: flex; flex-direction: column; gap: 12px; }
.stores a {
  display: block;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
  text-decoration: none;
}
.stores a.secondary {
  display: none;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.qr { margin-top: 28px; display: none; }
.qr.visible { display: block; }
.qr-box {
  display: inline-block;
  padding: 12px;
  background: #FFFFFF;
  border-radius: 12px;
  line-height: 0;
}
.qr small { display: block; margin-top: 8px; color: var(--muted); }