body {
    font-family: sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.login-container {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 350px;
    text-align: center;
}

h1 {
    color: #333;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 15px;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 5px;
    color: #555;
    font-size: 0.9em;
}

input.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 1em;
}

input.form-control:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 5px rgba(0, 123, 255, 0.5);
}

.error-message {
    color: #dc3545;
    font-size: 0.8em;
    margin-top: 5px;
    text-align: left;
}

button.btn-primary {
    background-color: #007bff;
    color: #fff;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    width: 100%;
}

button.btn-primary:hover {
    background-color: #0056b3;
}

.signup-link {
    margin-top: 20px;
    font-size: 0.9em;
    color: #777;
}

.signup-link a {
    color: #007bff;
    text-decoration: none;
}

.signup-link a:hover {
    text-decoration: underline;
}