:root {
  --bg: #ffffff;
  --text: #000000;
  --card: #f4f4f4;
  --border: #cccccc;
  --focus: #0066ff;
}

body.dark {
  --bg: #333333;
  --text: #ffffff;
  --card: #1e1e1e;
  --border: #444;
  --focus: #4da3ff;
}

body {
  margin: 20px;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* Barrierefreiheit – sichtbarer Fokus */
*:focus {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 15px;
}

.section label {
  display: block;
  margin-bottom: 8px;
}

input[type="text"],
input[type="password"],
input[type="number"] {
  width: 100%;
  padding: 6px;
  margin-top: 4px;
  box-sizing: border-box;
}

button {
  padding: 8px 14px;
  cursor: pointer;
  margin-top: 10px;
}

.footer {
  margin-top: 20px;
}

/* Automatischer Darkmode falls System aktiviert */
@media (prefers-color-scheme: dark) {
  body:not(.light) {
    --bg: #333333;
    --text: #ffffff;
    --card: #1e1e1e;
    --border: #444;
  }
}