/* ============================
   🎨 Basis Design-Tokens
   ============================ */
:root {
  --bg: #f7f7f8;
  --fg: #1a1b1e;
  --muted: #55585f;
  --card: #ffffff;
  --border: #d0d0d5;
  --accent: #2d6045;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --fg: #e9eaee;
    --muted: #aeb3bb;
    --card: #141720;
    --border: #2f3342;
    --accent: #7ad7a3;
  }
}

/* Base */
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 400 16px/1.55 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: var(--bg);
  color: var(--fg);
  transition: background-color .25s ease, color .25s ease, border-color .25s ease;
}

/* Topbar für den Barrierefrei-Button */
.topbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: .5rem 1rem;
  display: flex;
  justify-content: flex-end;
}
.a11y-toggle {
  font-size: .9rem;
  color: var(--accent);
  text-decoration: underline;
}
.a11y-toggle:focus {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Links */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color .2s ease, transform .2s ease;
}
a:hover { color: var(--fg); transform: translateY(-1px); }
a:focus { outline: 2px solid var(--accent); outline-offset: 3px; }

/* Layout */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 4vw, 32px);
  max-width: 1100px;
  margin: 0 auto;
  padding: clamp(16px, 4vw, 48px);
}
@media (min-width: 900px) {
  .grid-2 { grid-template-columns: 380px 1fr; }
}

.section-1,
.section-2 {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: clamp(16px, 3vw, 28px);
}

/* Branding */
.section-1 {
  display: grid;
  justify-items: center;
  text-align: center;
  gap: .6rem;
}
.logo {
  width: clamp(96px, 18vw, 180px);
  height: auto;
  display: block;
  color: var(--fg);
  cursor: pointer;
  transition: transform .15s ease;
}
.logo:active { transform: scale(0.95) rotate(-3deg); }

.section-1 h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  line-height: 1.1;
  margin: .25rem 0 0;
}
.section-1 p {
  margin: .25rem 0 .75rem;
  color: var(--muted);
}
.links {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.btn {
  display: inline-block;
  padding: .5rem .8rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--fg);
  background: color-mix(in oklab, var(--card), var(--fg) 3%);
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.btn:hover {
  background: color-mix(in oklab, var(--card), var(--fg) 8%);
  border-color: color-mix(in oklab, var(--border), var(--fg) 20%);
}
.btn:focus {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Content */
.section-2 h2 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin: .25rem 0 .5rem;
}
.section-2 p { margin: .25rem 0 1rem; }
.section-2 a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.section-2 a:hover { color: var(--fg); }

details.gpg {
  margin-top: 0.5rem;
}

details.gpg summary {
  cursor: pointer;
  font-weight: 600;
}

.pgp-fpr {
  font-family: monospace;
  font-size: 0.9em;
  background: var(--card);
  padding: 2px 4px;
  border-radius: 4px;
}


/* Responsive */
@media (max-width: 780px) {
  .grid-2 { grid-template-columns: 1fr; }
}