:root {
  --grund: #f6f5f1; --flaeche: #ffffff; --text: #1d1d1b; --leise: #6a6a64; --linie: #dcdad2;
  --akzent: #0f5c4d; --akzent-text: #ffffff; --warn: #9b2c1f; --warn-grund: #fbeceb; --gut-grund: #e8f3ef;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--grund); color: var(--text); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
header { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 16px 8px; max-width: 1080px; margin: 0 auto; }
h1 { font-size: 22px; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 17px; margin: 0 0 12px; }
h3 { font-size: 14px; margin: 20px 0 6px; color: var(--leise); text-transform: uppercase; letter-spacing: 0.05em; }
.leise { color: var(--leise); font-size: 14px; margin: 2px 0 0; }
nav { display: flex; gap: 4px; padding: 8px 16px 0; max-width: 1080px; margin: 0 auto; overflow-x: auto; border-bottom: 1px solid var(--linie); }
nav button { background: none; border: 0; border-bottom: 2px solid transparent; padding: 10px 12px; font: inherit; color: var(--leise); cursor: pointer; white-space: nowrap; }
nav button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--akzent); font-weight: 600; }
main { max-width: 1080px; margin: 0 auto; padding: 20px 16px 60px; }
.karte { background: var(--flaeche); border: 1px solid var(--linie); border-radius: 10px; padding: 18px; margin-bottom: 16px; }
label { display: block; font-size: 14px; font-weight: 600; margin: 12px 0 4px; }
input[type=text], input[type=password], input[type=file], textarea, select { width: 100%; padding: 10px 12px; border: 1px solid var(--linie); border-radius: 8px; font: inherit; background: #fff; color: var(--text); }
textarea { min-height: 96px; resize: vertical; }
button.haupt, button.neben { margin-top: 14px; padding: 10px 16px; border-radius: 8px; font: inherit; font-weight: 600; cursor: pointer; }
button.haupt { background: var(--akzent); color: var(--akzent-text); border: 1px solid var(--akzent); }
button.neben { background: #fff; color: var(--text); border: 1px solid var(--linie); }
button:disabled { opacity: 0.5; cursor: default; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 2px solid var(--akzent); outline-offset: 2px; }
.zeile { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.meldung { padding: 10px 12px; border-radius: 8px; margin-top: 14px; font-size: 14px; }
.meldung.fehler { background: var(--warn-grund); color: var(--warn); }
.meldung.gut { background: var(--gut-grund); color: var(--akzent); }
.ausgabe { white-space: pre-wrap; overflow-wrap: anywhere; margin-top: 14px; }
.zahlen { color: var(--leise); font-size: 13px; margin-top: 10px; }
.schritt { border-left: 3px solid var(--akzent); padding-left: 14px; margin: 16px 0; }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0; }
dt { color: var(--leise); font-size: 14px; }
dd { margin: 0; overflow-wrap: anywhere; }
ul { margin: 4px 0; padding-left: 20px; }
.tabelle { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--linie); white-space: nowrap; }
td.zahl, th.zahl { text-align: right; font-variant-numeric: tabular-nums; }
.blase { padding: 10px 12px; border-radius: 10px; margin: 8px 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.blase.user { background: var(--gut-grund); margin-left: 40px; }
.blase.assistant { background: #fff; border: 1px solid var(--linie); margin-right: 40px; }
a { color: var(--akzent); }
@media (max-width: 600px) { .zeile { grid-template-columns: 1fr; } .blase.user { margin-left: 12px; } .blase.assistant { margin-right: 12px; } }
.md { white-space: normal; margin-top: 14px; overflow-wrap: anywhere; }
.md p { margin: 0 0 10px; }
.md h3 { margin: 22px 0 8px; }
.md h4 { margin: 16px 0 6px; font-size: 15px; }
.md li { margin: 3px 0; }
.md code { background: var(--grund); padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.md th, .md td { white-space: normal; vertical-align: top; }
.blase .md { margin-top: 0; }
.blase.assistant { white-space: normal; }
#kopf-rechts { display: flex; gap: 8px; align-items: center; }
#kopf-rechts select { width: auto; }
#kopf-rechts button { margin-top: 0; }
details.karte > summary { cursor: pointer; }
details.karte[open] > summary { margin-bottom: 10px; }
td.befund.belegt { color: var(--akzent); font-weight: 600; }
td.befund.nicht_gefunden { color: var(--warn); }
button.klein { padding: 5px 10px; font-size: 13px; font-weight: 400; margin: 4px 6px 0 0; }
.md th { white-space: nowrap; }
details.kontakt { border-top: 1px solid var(--linie); padding-top: 12px; margin-top: 12px; }
details.kontakt > summary { cursor: pointer; }
.entwurf { white-space: pre-wrap; background: var(--grund); border: 1px solid var(--linie); border-radius: 8px; padding: 12px; margin: 0; }