:root {
  --blau: #1f4e79;
  --blau-hell: #e8f0f8;
  --akzent: #e07a1f;
  --text: #222;
  --grau: #666;
  --rand: #d9e2ec;
  --max: 960px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: #fafbfc;
}

a { color: var(--blau); }

.container { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }

header {
  background: var(--blau);
  color: #fff;
}
header .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.logo { color: #fff; text-decoration: none; font-weight: 700; font-size: 1.25rem; }
.logo span { color: var(--akzent); }
nav a {
  color: #fff;
  text-decoration: none;
  margin-left: 1.1rem;
  opacity: .9;
}
nav a:hover, nav a[aria-current="page"] { opacity: 1; text-decoration: underline; }

.hero {
  background: var(--blau-hell);
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--rand);
}
.hero h1 { margin: 0 0 .5rem; color: var(--blau); font-size: 2rem; }
.hero p { margin: 0; font-size: 1.15rem; max-width: 40em; }

main { padding: 2rem 0 3rem; }
h2 { color: var(--blau); margin-top: 2rem; }

.karten {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}
.karte {
  background: #fff;
  border: 1px solid var(--rand);
  border-radius: 8px;
  padding: 1.25rem;
}
.karte h3 { margin-top: 0; color: var(--blau); }

.button {
  display: inline-block;
  background: var(--akzent);
  color: #fff;
  padding: .55rem 1.1rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}
.button:hover { filter: brightness(.95); }

.hinweis {
  background: #fff8ef;
  border-left: 4px solid var(--akzent);
  padding: .75rem 1rem;
  margin: 1.5rem 0;
}

.dateiliste { list-style: none; padding: 0; }
.dateiliste li {
  background: #fff;
  border: 1px solid var(--rand);
  border-radius: 6px;
  padding: .7rem 1rem;
  margin-bottom: .5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.dateiliste .meta { color: var(--grau); font-size: .9rem; }

footer {
  border-top: 1px solid var(--rand);
  color: var(--grau);
  font-size: .9rem;
  padding: 1.5rem 0;
}
footer a { color: var(--grau); margin-right: 1rem; }

@media (max-width: 600px) {
  nav a { margin: 0 1rem 0 0; }
  .hero h1 { font-size: 1.6rem; }
}