body {
  font-family: 'Quicksand', sans-serif;
  background: #f7f9fb;
  margin: 0;
  padding: 1rem;
  color: #333;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  color: #0d6efd;
  margin-bottom: 0.25rem;
}

.subtitle {
  text-align: center;
  font-style: italic;
  color: #555;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

input[type="text"], select, input[type="number"] {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 0.5rem;
}

.color-buttons button {
  padding: 0.5rem 1rem;
  margin-right: 0.5rem;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: bold;
}

.color-black { background: #333; color: white; }
.color-zufall { background: linear-gradient(45deg, purple, orange); color: white; }
.color-rotgruen { background: darkred; color: lightgreen; }

.btn-submit {
  background-color: #28a745;
  color: white;
  padding: 1rem;
  border: none;
  width: 100%;
  font-size: 1.1rem;
  font-weight: bold;
  border-radius: 0.75rem;
  cursor: pointer;
}

.status {
  text-align: center;
  margin-top: 1rem;
  font-weight: bold;
}

.status.closed { color: red; }
.status.open { color: green; }