:root {
  color-scheme: light;
  --papier: #f7f7f4;
  --karte: #ffffff;
  --tinte: #171717;
  --leise: #5e5e5e;
  --linie: #d9d9d4;
  --akzent: #9c4a28;
  --bg: var(--papier);
  --card: var(--karte);
  --text: var(--tinte);
  --muted: var(--leise);
  --line: var(--linie);
  --accent: var(--akzent);
  --schrift: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --breite: 920px;
  font-family: var(--schrift);
  line-height: 1.55;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-underline-offset: 4px; }
a:hover { color: var(--text); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
h1, h2, h3 { line-height: 1.2; overflow-wrap: anywhere; }
h1 { margin: .5rem 0 .75rem; font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -.035em; }
h2 { margin: .3rem 0 1rem; font-size: clamp(1.35rem, 3vw, 1.8rem); letter-spacing: -.02em; }
h3 { margin: 1.75rem 0 .75rem; font-size: 1.08rem; }
p { margin: 0 0 1.25rem; }
ul { padding-left: 1.4rem; }
li + li { margin-top: .65rem; }
form, fieldset, label, .card, .grid > *, .selection-columns > * { min-width: 0; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  max-width: var(--breite);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 2rem;
  border-bottom: 1px solid var(--line);
}
.topbar > div { min-width: 0; }
.topbar > form, .topbar > .button-link { flex-shrink: 0; }
.product-description { max-width: 38rem; margin: 0; color: var(--muted); font-size: 1.05rem; }
.header-meta { margin: 0; color: var(--muted); font-size: .85rem; overflow-wrap: anywhere; }
.page { max-width: var(--breite); margin: 0 auto; padding: 2rem 1.25rem 3rem; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: clamp(1.25rem, 4vw, 2rem);
  margin: 0 0 2rem;
}
.card.compact { padding: 1.25rem 1.5rem; }
.card > :last-child { margin-bottom: 0; }
.eyebrow, .step {
  margin: 0;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .75rem;
  font-weight: 750;
}
.muted, .fineprint { color: var(--muted); }
.fineprint { font-size: .88rem; }
.section-nav { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; margin: .25rem 0 2rem; }
.section-nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: .92rem; }
.section-heading { display: flex; justify-content: space-between; align-items: start; gap: 1rem; }
.badge {
  display: inline-block;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: .3rem .6rem;
  font-size: .8rem;
  font-weight: 650;
}
.badge.subtle { color: var(--muted); }
.demo-small { color: var(--accent); }
.alert {
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--text);
  border-radius: 2px;
  background: var(--card);
}
.alert.demo, .alert.error { border-left-color: var(--accent); }
.alert.error strong, .alert.error[role="alert"] { color: var(--accent); }
.alert.success, .alert.live { border-left-color: var(--text); }
.stack { display: grid; gap: 1.5rem; }
.grid { display: grid; gap: 1.25rem; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
label { display: grid; gap: .5rem; color: var(--text); font-weight: 650; }
input, textarea, select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--card);
  color: var(--text);
  font: inherit;
  font-weight: 400;
  padding: .7rem .8rem;
}
textarea { resize: vertical; line-height: 1.6; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
input[readonly], textarea[readonly] { background: var(--bg); }
fieldset { margin: 0; border: 1px solid var(--line); border-radius: 2px; padding: 1rem; }
legend { font-weight: 700; padding: 0 .4rem; }
.criterion-row { display: grid; grid-template-columns: 4rem minmax(0, 1fr); gap: .65rem; margin-bottom: .75rem; }
.criterion-row:last-child { margin-bottom: 0; }
.criterion-id { font-weight: 700; }
.draft { display: block; color: var(--muted); font-size: .8rem; font-weight: 500; }
button, .button-link {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  max-width: 100%;
  border: 1px solid var(--text);
  border-radius: 2px;
  background: var(--text);
  color: var(--card);
  font: inherit;
  font-weight: 650;
  text-decoration: none;
  text-align: center;
  padding: .7rem 1.1rem;
  cursor: pointer;
}
button.secondary, .button-link.secondary, button.danger-outline {
  background: var(--card);
  color: var(--text);
}
button:not(:disabled):hover, .button-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--card);
}
button:disabled { background: var(--bg); border-color: var(--line); color: var(--muted); cursor: not-allowed; }
.counter { justify-self: end; color: var(--muted); font-size: .82rem; font-weight: 400; }
.selection-columns { display: grid; grid-template-columns: 3fr 2fr; gap: 1.25rem; }
.check-list { max-height: 20rem; overflow: auto; padding: .25rem; }
.check, .radio-row label { display: flex; align-items: center; min-height: 44px; gap: .65rem; padding: .4rem 0; font-weight: 400; }
.check input, .radio-row input { width: 20px; height: 20px; min-height: 20px; flex-shrink: 0; margin: 0; accent-color: var(--accent); }
.check span { overflow-wrap: anywhere; }
.check em { color: var(--muted); font-size: .82rem; }
.short { max-width: 12rem; }
.estimate { padding: 1rem; border-left: 3px solid var(--text); background: var(--bg); font-size: .95rem; }
.table-wrap { max-width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { border-bottom: 1px solid var(--line); padding: .85rem .65rem; text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; font-weight: 700; }
td { overflow-wrap: anywhere; }
tr.discarded { color: var(--muted); }
.empty { text-align: center; color: var(--muted); padding: 2rem; }
.filter-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)) auto; gap: .75rem; align-items: end; margin-bottom: 1.5rem; }
.metadata { display: flex; flex-wrap: wrap; gap: .85rem 1.5rem; font-size: .9rem; }
.metadata span { overflow-wrap: anywhere; }
.metadata b { display: block; margin-bottom: .15rem; font-weight: 650; }
.compare-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; margin-bottom: 2rem; }
.compare-grid > .card { margin-bottom: 0; }
.compare-grid > .card:last-child { grid-column: 1 / -1; }
.student-text { white-space: pre-wrap; overflow-wrap: anywhere; background: var(--bg); border-left: 2px solid var(--line); padding: 1rem; margin-top: .75rem; }
blockquote { margin: .65rem 0; padding-left: .85rem; border-left: 2px solid var(--line); color: var(--muted); overflow-wrap: anywhere; }
.criterion { display: inline-block; color: var(--muted); font-size: .8rem; font-weight: 700; }
.teacher-warning { background: var(--bg); border-left: 2px solid var(--accent); padding: 1rem; }
.revision { border-top: 1px solid var(--line); padding: 1rem 0; }
.radio-row, .actions { display: flex; flex-wrap: wrap; gap: 1rem 1.5rem; }
.danger-zone { border-top: 2px solid var(--accent); }
.login-shell { min-height: calc(100vh - 130px); display: grid; place-items: center; padding: 3rem 1.25rem; }
.login-card { width: min(100%, 480px); margin: 0; }
.login-card h1 { font-size: clamp(2rem, 6vw, 2.75rem); }
.login-card .product-description { margin-bottom: 1.5rem; }
.site-footer { max-width: var(--breite); margin: 0 auto; padding: 1.5rem 1.25rem 2rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.site-footer > div { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem 1.5rem; }
.site-footer a { display: inline-flex; align-items: center; min-height: 44px; }

@media (max-width: 760px) {
  .grid.three, .selection-columns, .filter-row { grid-template-columns: 1fr; }
  .topbar { gap: 1.25rem; }
  .compare-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .page { padding: 1.5rem 1rem 2rem; }
  .topbar { flex-wrap: wrap; padding: 1.75rem 1rem 1.5rem; }
  .card { padding: 1.25rem; margin-bottom: 1.5rem; }
  .card.compact { padding: 1.25rem; }
  .grid.two { grid-template-columns: 1fr; }
  .section-heading { flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
  .section-heading h2 { margin-bottom: .5rem; }
  .criterion-row { grid-template-columns: 3.5rem minmax(0, 1fr); gap: .5rem; }
  .criterion-row input { padding-right: .5rem; padding-left: .5rem; }
  .section-nav { gap: .25rem 1rem; }
  .site-footer { padding-right: 1rem; padding-left: 1rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}