body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-form {
    background-color: #fff;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    text-align: center;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1rem;
}

button {
    width: 100%;
    padding: 0.85rem;
    background-color: #2c3e50;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #34495e;
}

.error {
    background-color: #f8d7da;
    color: #721c24;
    padding: 0.75rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    border: 1px solid #f5c6cb;
}