/* Alberich F-Droid landing — same tokens as alberich.pro / handbook */
:root {
  color-scheme: dark;
  --slate-950: #020617;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-400: #94a3b8;
  --amber-400: #fbbf24;
  --bg: #0b1220;
  --bg-elevated: #111827;
  --bg-header: rgba(15, 23, 42, 0.92);
  --border: #334155;
  --border-subtle: rgba(148, 163, 184, 0.16);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --accent: #fbbf24;
  --accent-soft: rgba(251, 191, 36, 0.14);
  --link: #4ade80;
  --link-hover: #86efac;
  --focus: rgba(251, 191, 36, 0.45);
  --warn: #fbbf24;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --radius: 16px;
  --header-h: 64px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(251, 191, 36, 0.07), transparent 55%),
    linear-gradient(180deg, #1e2937 0%, var(--slate-950) 55%);
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}
a:hover { color: var(--link-hover); }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 200;
  padding: 0.5rem 0.9rem;
  background: var(--accent);
  color: #0f172a;
  font-weight: 700;
  border-radius: 8px;
  text-decoration: none;
}
.skip-link:focus { top: 0.6rem; }

html[data-ui-lang="de"] [data-lang="en"],
html[data-ui-lang="en"] [data-lang="de"] {
  display: none !important;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-header);
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header__inner {
  max-width: 52rem;
  margin: 0 auto;
  padding: 0.6rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: var(--header-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: inherit;
}
.brand:hover { color: inherit; }

.brand__mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
  border: 1px solid var(--border-subtle);
}

.brand__text h1 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.brand__text p {
  margin: 0;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-primary {
  display: none;
  align-items: center;
  gap: 0.1rem;
}
.nav-primary a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 500;
  padding: 0.4rem 0.65rem;
  border-radius: 8px;
}
.nav-primary a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--slate-600);
  border-radius: 10px;
  overflow: hidden;
}

.lang-btn {
  border: none;
  cursor: pointer;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 6px 10px;
  background: transparent;
  color: var(--slate-400);
}
.lang-btn:hover {
  background: rgba(251, 191, 36, 0.08);
  color: var(--amber-400);
}
.lang-btn.active {
  background: rgba(251, 191, 36, 0.18);
  color: var(--amber-400);
}

@media (min-width: 720px) {
  .nav-primary { display: flex; }
}

.page {
  max-width: 52rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.lede {
  margin: 0 0 1.75rem;
}
.lede h2 {
  margin: 0 0 0.6rem;
  font-size: 1.65rem;
  letter-spacing: -0.03em;
  line-height: 1.25;
}
.lede p {
  margin: 0.45rem 0 0;
  color: var(--text-muted);
  max-width: 40rem;
}

.channels {
  display: grid;
  gap: 1rem;
}
@media (min-width: 720px) {
  .channels { grid-template-columns: 1fr 1fr; }
}

.card {
  margin: 0;
  padding: 1.15rem 1.2rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  background: linear-gradient(165deg, #1a2436 0%, #0b1220 100%);
}
.card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}
.card .kicker {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.card p {
  margin: 0 0 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 0.95rem;
  border-radius: 10px;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 650;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #0f172a;
}
.btn-primary:hover {
  background: #fcd34d;
  color: #0f172a;
}
.btn-secondary {
  background: var(--slate-800);
  color: var(--text);
  border-color: var(--slate-600);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.fdroid-panel {
  margin-top: 1.5rem;
  padding: 1.2rem 1.25rem 1.35rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
}

.fdroid-panel h3 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}

.qr-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: flex-start;
}

.qr-row img {
  width: 148px;
  height: 148px;
  border-radius: 12px;
  background: #fff;
  padding: 8px;
}

.meta dt {
  margin: 0.7rem 0 0.15rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.meta dd {
  margin: 0;
}

.fingerprint,
.repo-url {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  word-break: break-all;
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  color: var(--text);
}

.copy-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.45rem;
}

.warn {
  margin: 1.35rem 0 0;
  padding: 0.9rem 1rem;
  border-radius: 12px;
  border: 1px solid rgba(251, 191, 36, 0.45);
  background: rgba(251, 191, 36, 0.08);
}
.warn p { margin: 0; }
.warn p + p { margin-top: 0.55rem; }
.warn strong { color: var(--warn); }

.fdroid-panel .tertiary {
  margin-top: 1rem;
}

.tertiary {
  margin: 1.35rem 0 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.tertiary p { margin: 0 0 0.55rem; }
.hash {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  word-break: break-all;
  color: var(--slate-400);
}

.site-footer {
  max-width: 52rem;
  margin: 0 auto;
  padding: 0 1.25rem 2.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  margin-bottom: 0.75rem;
}
.site-footer p { margin: 0; }