:root {
  --farbe-primaer: #1f2937;
  --farbe-akzent: #2563eb;
  --farbe-fehler: #dc2626;
  --farbe-erfolg: #16a34a;
  --farbe-hintergrund: #f9fafb;
  --farbe-rand: #d1d5db;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--farbe-hintergrund);
  color: #111827;
}

header {
  background: var(--farbe-primaer);
  color: white;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

header h1 { font-size: 1.1rem; margin: 0; white-space: nowrap; }

nav { display: flex; gap: 0.5rem; flex: 1; flex-wrap: wrap; }

nav button {
  background: transparent;
  border: 1px solid #4b5563;
  color: white;
  padding: 0.35rem 0.8rem;
  border-radius: 6px;
  cursor: pointer;
}
nav button.active { background: var(--farbe-akzent); border-color: var(--farbe-akzent); }

#user-info { font-size: 0.85rem; color: #d1d5db; }
#user-info button { margin-left: 0.5rem; }

main { padding: 1.5rem; max-width: 1100px; margin: 0 auto; }

section.karte {
  background: white;
  border: 1px solid var(--farbe-rand);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

h2 { margin-top: 0; font-size: 1.05rem; }
h3 { font-size: 0.95rem; color: #374151; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--farbe-rand); }
th { color: #374151; }

form.inline { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: end; margin-bottom: 0.75rem; }
form.inline label { display: flex; flex-direction: column; font-size: 0.8rem; color: #4b5563; }
input, select, button {
  font-size: 0.9rem;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--farbe-rand);
  border-radius: 6px;
}
button.primaer { background: var(--farbe-akzent); color: white; border-color: var(--farbe-akzent); cursor: pointer; }
button.gefahr { background: var(--farbe-fehler); color: white; border-color: var(--farbe-fehler); cursor: pointer; }
button.klein { padding: 0.2rem 0.5rem; font-size: 0.8rem; }
button.link-button {
  background: transparent;
  border: none;
  color: var(--farbe-akzent);
  padding: 0;
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
  text-align: left;
}

.hinweis { font-size: 0.85rem; color: #6b7280; margin: 0.25rem 0 0.75rem; }
.fehler { color: var(--farbe-fehler); font-size: 0.85rem; }
.erfolg { color: var(--farbe-erfolg); font-size: 0.85rem; }

.grid-zwei { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 800px) { .grid-zwei { grid-template-columns: 1fr; } }