:root {
        --primary-grey: #4a4a4a;
        --light-grey: #888;
        --medium-grey: #6c757d;
        --dark-grey: #343a40;
        --navbar-height: 60px; /* Adjust based on your navbar height */
        --footer-height: 60px; /* Adjust based on your footer height */
    }

    .register-section {
        background-color: #888;
        padding: calc(var(--navbar-height) + 20px) 20px calc(var(--footer-height) + 20px);
        min-height: calc(100vh - var(--navbar-height) - var(--footer-height));
        display: flex;
        align-items: center;
        justify-content: center; /* Center the form */
        overflow-y: auto; /* Allow scrolling if content overflows */
    }

    .register-form {
        background-color: white;
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
        max-width: 400px;
        width: 100%;
        box-sizing: border-box;
    }

    .register-form h2 {
        color: black;
        font-size: 1.8rem;
        margin-bottom: 20px;
        text-align: center;
    }

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

    .form-group label {
        color: var(--medium-grey);
        font-size: 1rem;
    }

    .form-group input {
        padding: 10px;
        border: 1px solid var(--medium-grey);
        border-radius: 5px;
        width: 100%;
        font-size: 1rem;
        box-sizing: border-box;
    }

    .btn-primary {
        background-color: var(--primary-grey);
        border-color: var(--primary-grey);
        color: white;
        width: 100%;
        padding: 10px;
        font-size: 1rem;
    }

    .btn-primary:hover {
        background-color: var(--dark-grey);
        border-color: var(--dark-grey);
    }

    .text-center {
        margin-top: 15px;
    }

    /* Mobile responsiveness */
    @media (max-width: 768px) {
        .register-section {
            padding: calc(var(--navbar-height) + 10px) 10px calc(var(--footer-height) + 10px);
            min-height: auto; /* Allow content to fit */
        }

        .register-form {
            padding: 15px;
            max-width: 90%;
            width: 320px; /* Fixed width for mobile */
        }

        .register-form h2 {
            font-size: 1.4rem;
        }

        .form-group label {
            font-size: 0.9rem;
        }

        .form-group input {
            padding: 8px;
            font-size: 0.9rem;
        }

        .btn-primary {
            padding: 8px;
            font-size: 0.9rem;
        }
    }

    /* Extra small screens */
    @media (max-width: 360px) {
        .register-form {
            width: 100%;
            padding: 10px;
        }

        .register-form h2 {
            font-size: 1.2rem;
        }

        .form-group label, .form-group input, .btn-primary {
            font-size: 0.85rem;
        }
    }