:root {
  color-scheme: light dark;
  --grund: #ffffff;
  --karte: #f6f8f9;
  --text: #14212b;
  --gedaempft: #5d7079;
  --rand: #d9e1e5;
  --akzent: #0f5964;
  --akzent-text: #ffffff;
  --rot: #c0392b;
  --gruen: #1d7a5f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --grund: #0d1418;
    --karte: #16232a;
    --text: #e6edf1;
    --gedaempft: #93a6ae;
    --rand: #26363e;
    --akzent: #3fa5b4;
    --akzent-text: #06222a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.65;
  background: var(--grund);
  color: var(--text);
}

.huelle { max-width: 44rem; margin: 0 auto; padding: 0 1.25rem; }

header { border-bottom: 1px solid var(--rand); }
header .huelle { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 1rem; }
header a { color: inherit; text-decoration: none; font-weight: 600; }
header nav { display: flex; gap: 1rem; font-size: .9rem; }
header nav a { font-weight: 400; color: var(--gedaempft); }
header nav a:hover { color: var(--text); }

h1 { font-size: 1.9rem; line-height: 1.25; margin: 2.5rem 0 .5rem; }
h2 { font-size: 1.25rem; margin: 2.5rem 0 .75rem; }
h3 { font-size: 1rem; margin: 1.5rem 0 .35rem; }
p { margin: .6rem 0; }
.fuehrung { font-size: 1.1rem; color: var(--gedaempft); }

.karte {
  background: var(--karte);
  border: 1px solid var(--rand);
  border-radius: .75rem;
  padding: 1.25rem;
  margin: 1rem 0;
}

.raster { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }

a.knopf, button {
  display: inline-block;
  background: var(--akzent);
  color: var(--akzent-text);
  border: none;
  border-radius: .5rem;
  padding: .7rem 1.2rem;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
}
a.knopf:hover, button:hover { opacity: .9; }

label { display: block; font-size: .85rem; color: var(--gedaempft); margin-top: .9rem; }
input, select {
  width: 100%;
  padding: .6rem .7rem;
  margin-top: .25rem;
  font: inherit;
  color: var(--text);
  background: var(--grund);
  border: 1px solid var(--rand);
  border-radius: .5rem;
}

.ergebnis { margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--rand); }
.ergebnis .betrag { font-size: 1.9rem; font-weight: 600; }
.zeile { display: flex; justify-content: space-between; gap: 1rem; padding: .2rem 0; font-size: .92rem; }
.zeile span:first-child { color: var(--gedaempft); }

.hinweis { font-size: .85rem; color: var(--gedaempft); }
.warnung { color: var(--rot); }
.gut { color: var(--gruen); }

footer { margin-top: 4rem; border-top: 1px solid var(--rand); font-size: .85rem; color: var(--gedaempft); }
footer .huelle { padding-block: 1.5rem; display: flex; flex-wrap: wrap; gap: .35rem 1rem; }
footer a { color: inherit; }

ul { padding-left: 1.15rem; }
li { margin: .3rem 0; }