body {
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.login-container {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 1.5rem;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-weight: bold;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    background-color: #f9f9f9;
}

input[type="text"]:focus,
input[type="password"]:focus {
    border-color: #007bff;
    outline: none;
}

.btn-login {
    width: 100%;
    padding: 0.75rem;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 1rem;
}

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

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