:root {
  --ink: #f2f6fc;
  --muted: rgba(242, 246, 252, 0.72);
  --accent: #7ec8ff;
  --shade: rgba(4, 12, 28, 0.55);
  --panel: rgba(4, 12, 28, 0.42);
  --line: rgba(242, 246, 252, 0.18);
  --link: #9fd4ff;
}

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

html, body { margin: 0; min-height: 100%; }

body {
  position: relative;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background-color: #04101e;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  padding: 4rem 5% 3rem 10%;
}

/* Viewport-fix: skaliert nicht mit Dokumenthöhe (lange Texte) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-color: #04101e;
  background-image:
    linear-gradient(90deg, var(--shade) 0%, rgba(4, 12, 28, 0.35) 42%, transparent 68%),
    url("/assets/background.jpg");
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
}

main {
  width: min(46rem, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1.5rem 1.5rem 1.75rem;
  backdrop-filter: blur(2px);
}

.kicker {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.15;
  font-weight: 650;
}

h2 {
  margin: 1.75rem 0 0.65rem;
  font-size: 1.15rem;
  font-weight: 650;
}

h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1rem;
  font-weight: 650;
  color: var(--accent);
}

.lead,
p,
li {
  margin: 0 0 0.75rem;
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--muted);
}

.lead { font-size: 1.05rem; margin-bottom: 1.25rem; }

ul { margin: 0 0 0.75rem; padding-left: 1.2rem; }

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

a:hover { color: var(--ink); }

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  margin: 0 0 1.35rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}

.site-nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}

.doc-nav {
  margin: 1.25rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
}

.doc-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.doc-nav li { margin: 0 0 0.4rem; }

.placeholder {
  border: 1px dashed var(--line);
  border-radius: 0.5rem;
  padding: 0.85rem 1rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
  margin: 0 0 0.75rem;
}

.meta {
  margin: 1.5rem 0 0;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--muted);
}

code {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 0.9em;
  color: var(--ink);
}

@media (max-width: 640px) {
  body { padding: 2rem 1.25rem; }
  main { padding: 1.15rem; }
}