#sz-booking-form-wrapper {
    max-width: 600px;
    margin: 20px auto;
    padding: 25px;
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
#sz-booking-form .form-group {
    margin-bottom: 20px;
}
#sz-booking-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #333;
}
#sz-booking-form input[type="text"],
#sz-booking-form select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}
#sz-booking-form select[name="start_zeit"],
#sz-booking-form select[name="end_zeit"] {
    display: inline-block;
    width: 48%;
}
#sz-booking-form label[for="end_zeit"] {
    margin-left: 4%;
}
#sz-booking-form button {
    width: 100%;
    padding: 12px;
    background-color: #2ea44f;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
#sz-booking-form button:hover {
    background-color: #2c974b;
}
#sz-booking-form button:disabled {
    background-color: #94d3a2;
    cursor: not-allowed;
}
#sz-form-messages {
    margin-top: 15px;
    padding: 12px;
    border-radius: 5px;
    text-align: center;
    display: none;
}
#sz-form-messages.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}
#sz-form-messages.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}