.input-field {
  padding: 6px 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1em;
  margin-bottom: 8px;
}
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
}

.rechner {
  max-width: 600px;
  margin: 20px auto;
  padding: 20px;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
}

.black-line {
  width: 80%;
  height: 2px;
  background-color: rgb(0, 0, 0);
  margin: 20px auto;
}

h1 {
  text-align: center;
  font-size: 24px;
  color: #111;
}

h2 {
  margin-top: 20px;
  font-size: 18px;
  color: #111;
  text-align: center;
}

label {
  display: block;
  margin: 10px 0 5px;
  font-size: 14px;
  text-align: center;
  color: #111;
}

input, textarea {
  width: 100%;
  padding: 8px;
  margin: 5px 0 15px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

button {
  padding: 10px;
  font-size: 16px;
  background-color: #218838;
  color: #fff !important;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  width: 100%;
}

button:hover {
  background-color: #388e3c;
  color: #fff;
}

#positionen {
  margin: 10px 0;
}

.doku {
  margin-top: 5px;
  padding: 5px;
}

#pwa-banner {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  background: rgba(0,0,0,0.4);
  z-index: 999;
}
#pwa-banner > div {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  padding: 32px 24px;
  border-radius: 16px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.2);
  text-align: center;
  min-width: 260px;
}
#pwa-banner img {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
}
#pwa-banner button {
  padding: 8px 18px;
  font-size: 1em;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}
#pwa-install-btn {
  background: #222;
  color: #fff;
  margin-right: 2px;
  border: 1px solid #fff;
}
#pwa-cancel-btn {
  background: #ccc;
  color: #111;
  margin-left: 2px;
  border: 1px solid #222;
}