body {
    background-color: rgba(var(--priUser), 1);
    color: rgba(var(--secUser), 1);
    font-family: Georgia, serif;
    min-height: 100vh;

    a {
        text-decoration: none;
        font-weight: 700;
        color: rgba(var(--terUser), 1);

        &:hover {
            color: rgba(var(--ninUser), 1);
            text-shadow: 0 0 0.5rem rgba(var(--terUser), 1);
        }
    }

    .container {
        max-width: 960px;
        margin: 0 auto;
        padding: 1rem;

        .navbar {
            padding: 0.75rem 0;
            border-bottom: 0.1rem solid rgba(var(--secUser), 0.4);

            .container-fluid {
                display: flex;
                align-items: center;
                gap: 1rem;
            }

            .navbar-brand {
                margin-right: auto;

                h1 {
                    font-size: 2rem;
                }
            }

            .navbar-text,
            .navbar-link {
                color: rgba(var(--quaUser), 1);
                font-size: 0.875rem;
            }
        }

        .input-group {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;

            .form-control {
                width: auto;
            }
        }

        .form-control {
            background-color: rgba(var(--priUser), 1);
            color: rgba(var(--secUser), 1);
            border: 0.1rem solid rgba(var(--secUser), 0.5);
            --_pad-v: 0.5rem;
            padding: var(--_pad-v) 0.75rem;
            border-radius: calc((var(--_pad-v) * 2 + 1em) / 3);
            width: 100%;
            font-family: inherit;

            &.is-invalid {
                border-color: rgba(var(--priRd), 1);
            }

            &.form-control-lg {
                --_pad-v: 0.75rem;
                padding: var(--_pad-v) 1rem;
                font-size: 1.125rem;
            }

            &.is-invalid ~ .invalid-feedback {
                display: block;
            }
        }

        .invalid-feedback {
            display: none;
            color: rgba(var(--priRd), 1);
            font-size: 0.875rem;
            margin-top: 0.25rem;
        }

        .alert {
            padding: 0.75rem 1rem;
            margin: 0.75rem 0;
            border-radius: 0.5rem;
            border: 0.1rem solid rgba(var(--priYl), 0.5);
            color: rgba(var(--priYl), 1);

            &.alert-success {
                border-color: rgba(var(--priGn), 0.5);
                color: rgba(var(--priGn), 1);
            }

            &.alert-warning {
                border-color: rgba(var(--priOr), 0.5);
                color: rgba(var(--priOr), 1);
            }
        }

        .row {
            padding: 2rem 0;

            .col-md-12 {
                width: 100%;
                justify-content: center;
            }

            .col-lg-6 {
                max-width: 600px;
                margin: 0 auto;

                h2 {
                    font-size: 2.5rem;
                    color: rgba(var(--quaUser), 1);
                    margin-bottom: 1rem;
                }
            }
        }
    }
}