/* Standard: Hellmodus */
body {
  font-family: sans-serif;
  background: #f2f2f2;
  padding: 20px;
  color: black;
}

.webseite {
  background: white;
  padding: 15px;
  margin: 10px 0;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

input, button {
  padding: 8px;
  margin: 5px 0;
}

#scrollTopBtn {
  display: none; /* Anfangs unsichtbar */
  position: fixed;
  bottom: 20px;
  right: 30px;
  z-index: 99;
  font-size: 24px;
  background-color: #333;
  color: white;
  padding: 12px 16px;
  border: none;
  border-radius: 8px;
  text-decoration: none;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.3s;
}

#scrollTopBtn:hover {
  opacity: 1;
}

/* Dunkelmodus */
body.dark-mode {
  background: #121212;
  color: white;
}

body.dark-mode .webseite {
  background: #1e1e1e;
  box-shadow: 0 2px 5px rgba(255,255,255,0.1);
}

body.dark-mode input,
body.dark-mode button {
  background-color: #2c2c2c;
  color: white;
  border: 1px solid #444;
}