:root {
    color-scheme: dark;
}

body {
    font-family: Arial, sans-serif;
    background: #1e1e1e;
    color: #ddd;
    margin: 0;
    padding: 2rem;
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: #fff;
}

.tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    gap: 1rem;
}

.tabs button {
    background: #333;
    border: none;
    padding: 0.7rem 1.5rem;
    font-size: 1rem;
    color: #fff;
    cursor: pointer;
    border-radius: 4px;
}

.tabs button.active {
    background: #007acc;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.card {
    background: #2a2a2a;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

.card h2 {
    margin-top: 0;
    color: #fff;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.5rem;
    font-size: 1rem;
    background: #1e1e1e;
    color: #ddd;
    border: 1px solid #444;
    border-radius: 4px;
}

button.call-btn {
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    margin-top: 0.5rem;
    cursor: pointer;
    background: #007acc;
    color: #fff;
    border: none;
    border-radius: 4px;
}

.antwort {
    margin-top: 1rem;
    background: #111;
    padding: 1rem;
    font-family: monospace;
    white-space: pre-wrap;
    border-radius: 4px;
    color: #0f0;
}