body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f0f2f5;
    height: 80vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    width: 80vw;
    max-width: 900px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.login-left {
    flex: 1;
    text-align: center;
}

    .login-left h2 {
        margin-bottom: 1rem;
    }

    .login-left input[type="password"] {
        font-size: 2rem;
        text-align: center;
        width: 90%;
        padding: 1rem;
        border: 2px solid #ccc;
        border-radius: 12px;
        background-color: #f9f9f9;
    }

.numpad {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.row {
    display: flex;
    justify-content: space-between;
}

.num-key, .login-button {
    flex: 1;
    padding: 1rem;
    margin: 0 0.25rem;
    font-size: 1.5rem;
    border: none;
    border-radius: 8px;
    background-color: #007bff;
    color: white;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

    .num-key:hover, .login-button:hover {
        background-color: #0056b3;
    }

    .num-key:active, .login-button:active {
        background-color: #004094;
    }

.login-button {
    background-color: #28a745;
}