body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(to right, #007acc, #005fa3);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    text-align: center;
}

    .login-container h2 {
        margin-bottom: 20px;
        font-size: 22px;
        color: #007acc;
    }

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

    .form-group label {
        display: block;
        font-weight: bold;
        margin-bottom: 5px;
        font-size: 14px;
    }

.form-control {
    width: 100%;
    padding: 8px 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    box-sizing: border-box;
}

.btn-login {
    width: 100%;
    background: #007acc;
    color: #fff;
    padding: 10px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

    .btn-login:hover {
        background: #005fa3;
    }

.error-message {
    margin-top: 10px;
    color: red;
    font-size: 14px;
}

@media (max-width: 600px) {
    .login-container {
        margin: 0 20px;
        padding: 20px;
    }
}