/* Палитра и типографика по мотивам f-droid.org: Roboto, #1976d2, #212121/#757575. */
:root {
  --blue: #1976d2;
  --blue-dark: #1565c0;
  --blue-deep: #0d47a1;
  --ink: #212121;
  --muted: #757575;
  --line: #ccc;
  --panel: #f5f5f5;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  border-top: 4px solid var(--blue-deep);
  color: var(--ink);
  background: #fff;
  font-family: Roboto, "Segoe UI", system-ui, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, monospace; }
.wrap { max-width: 1100px; margin-inline: auto; padding-inline: 16px; }

/* Шапка: белая, логотип + крупное название, как на f-droid.org */
.masthead { display: flex; align-items: baseline; gap: 16px; padding-block: 20px; }
.brand { display: inline-flex; align-items: center; gap: 16px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand-logo { width: 56px; height: 56px; object-fit: contain; }
.brand-title { font-size: 34px; font-weight: 500; letter-spacing: .01em; }
.brand-tagline { color: var(--muted); font-size: 14px; }

/* Синяя навигационная полоса */
.site-nav { background: var(--blue); }
.nav-inner { display: flex; overflow-x: auto; }
.site-nav a {
  padding: 13px 16px;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  white-space: nowrap;
}
.site-nav a:hover { background: var(--blue-dark); text-decoration: none; }

main { padding-block: 8px 40px; }
section { margin-top: 32px; }
h1 { margin: 16px 0 8px; font-size: 28px; font-weight: 500; line-height: 1.3; }
h2 {
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-size: 24px;
  font-weight: 500;
}
p { margin: 0 0 12px; }

/* Вступление: текст и кнопка слева, QR справа */
.intro { display: flex; gap: 40px; align-items: flex-start; }
.intro-copy { flex: 1 1 auto; max-width: 700px; }
.intro-actions { margin: 20px 0 16px; }
.qr { flex: none; margin: 16px 0 0; text-align: center; }
.qr img {
  display: block;
  width: 200px;
  height: 200px;
  padding: 8px;
  border: 1px solid var(--line);
  background: #fff;
  image-rendering: pixelated;
}
.qr figcaption { margin-top: 8px; color: var(--muted); font-size: 13px; }

.btn {
  display: inline-block;
  padding: 11px 18px;
  border: 0;
  border-radius: 2px;
  color: #fff;
  background: var(--blue);
  box-shadow: 0 1px 3px rgba(0, 0, 0, .25);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.btn:hover { background: var(--blue-dark); text-decoration: none; }
.btn-outline { color: var(--blue); background: #fff; border: 1px solid var(--line); box-shadow: none; }
.btn-outline:hover { background: #edf5fd; }

.repo-url {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 560px;
  padding: 6px 6px 6px 12px;
  border: 1px solid var(--line);
  background: var(--panel);
}
.repo-url code { overflow: hidden; font-size: 14px; text-overflow: ellipsis; white-space: nowrap; }
.repo-url .btn { flex: none; }

/* Список приложений: плоские панели с иконкой слева */
.app-list { display: grid; gap: 12px; }
.app-card { display: flex; gap: 16px; padding: 16px; border: 1px solid var(--line); background: #fff; }
.app-icon { flex: none; width: 56px; height: 56px; object-fit: cover; border-radius: 8px; }
.app-body { min-width: 0; }
.app-body h3 { margin: 0 0 4px; font-size: 20px; font-weight: 500; }
.version { margin-left: 6px; color: var(--muted); font-size: 13px; font-weight: 400; }
.app-body > p { margin: 0 0 6px; }
.app-meta { color: var(--muted); font-size: 13px; }
.app-links { display: flex; gap: 20px; margin: 0; font-size: 14px; }
.note { margin-top: 12px; color: var(--muted); font-size: 14px; }

.steps { margin: 0; padding-left: 22px; }
.steps li { margin-bottom: 8px; }
.steps code { padding: 1px 4px; background: var(--panel); font-size: 14px; }

.fingerprint {
  margin: 0 0 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
}

.site-footer { margin-top: 24px; padding-block: 20px; border-top: 1px solid var(--line); background: var(--panel); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }
.footer-inner p { margin: 0; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; gap: 16px; }

.toast {
  position: fixed;
  z-index: 30;
  left: 50%;
  bottom: 24px;
  padding: 10px 16px;
  border-radius: 2px;
  color: #fff;
  background: var(--ink);
  box-shadow: 0 2px 8px rgba(0, 0, 0, .3);
  opacity: 0;
  transform: translate(-50%, 12px);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  font-size: 14px;
}
.toast.visible { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 760px) {
  .masthead { flex-wrap: wrap; gap: 4px 16px; }
  .brand-logo { width: 44px; height: 44px; }
  .brand-title { font-size: 26px; }
  .intro { flex-direction: column; gap: 8px; }
  .qr { align-self: center; }
  .repo-url { flex-wrap: wrap; }
  .app-card { gap: 12px; }
  .app-links { flex-wrap: wrap; gap: 8px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}