:root {
  --primary-color: #007bff;
  --primary-dark: #0056b3;
  --bg-light: #f4f4f4;
  --error-color: #ff0000;
}

/* Body styling for login page */
body {
    background-color: var(--bg-light);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
}

/* Login form styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 100%;
    padding: 15px;
}

.login-form {
    background-color: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-form h2 {
    margin-bottom: 1.5rem;
    color: #333;
    font-size: 1.8rem;
}

.login-form .input-group {
    margin-bottom: 1.2rem;
    text-align: left;
}

.login-form input {
    padding: 0.8rem;
    width: 100%;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.login-form input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
    outline: none;
}

.login-form button {
    padding: 0.8rem;
    background-color: var(--primary-color);
    border: none;
    border-radius: 4px;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    width: 100%;
    margin-top: 1.5rem;
    transition: background-color 0.3s;
}

.login-form button:hover {
    background-color: var(--primary-dark);
}

/* Error message styles */
.error {
    color: var(--error-color);
    font-size: 0.9rem;
    margin-top: 1rem;
    text-align: center;
    padding: 0.5rem;
    background-color: rgba(255, 0, 0, 0.1);
    border-radius: 4px;
}

/* Responsive design for login form */
@media (max-width: 600px) {
    .login-form {
        padding: 1.5rem;
        width: 90%;
    }

    .login-form input,
    .login-form button {
        font-size: 1.2rem;
        padding: 1rem;
    }

    .login-form h2 {
        font-size: 1.8rem;
    }

    .login-form .input-group {
        margin-bottom: 1.5rem;
    }
    
    .error {
        font-size: 1rem;
    }
}