body {
    font-family: "Segoe UI", sans-serif;
    background: linear-gradient(to right, #f0f0f0, #ffffff);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container, .login-box {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 500px;
}

h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="file"] {
    width: 100%;
    padding: 0.8rem;
    margin: 0.5rem 0;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
}

input[type="submit"] {
    width: 100%;
    padding: 0.8rem;
    background-color: #005aa7;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: #004080;
}

.fehler {
    color: red;
    text-align: center;
    margin-top: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

table, th, td {
    border: 1px solid #ccc;
}

th, td {
    padding: 0.5rem;
    text-align: center;
    font-size: 0.9rem;
}