body {
    display: flex;
    flex-direction: column;
    background-color: rgba(var(--priUser), 1);
    color: rgba(var(--secUser), 1);
    font-family: Georgia, serif;
    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;
        width: 100%;
        margin: 0 auto;
        padding: 1rem;
        flex: 1;

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

            .navbar-brand {
                h1 {
                    font-size: 2rem;
                }
            }
            
            .container-fluid {
                display: flex;
                align-items: center;
                gap: 1rem;

                > form { flex-shrink: 0; margin-left: auto; }
            }

            .navbar-text,
            .navbar-link {
                flex: 1;
                min-width: 0;
                text-align: center;

                .navbar-label {
                    display: block;
                    color: rgba(var(--secUser), 0.7);
                    font-size: 0.75rem;
                }

                .navbar-identity {
                    display: block;
                    color: rgba(var(--quaUser), 1);
                    font-size: 0.875rem;
                    overflow: hidden;
                    text-overflow: ellipsis;
                    white-space: nowrap;
                }
            }
        }

        .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;
            }

            &:focus {
                border-color: rgba(var(--terUser), 0.75);
                box-shadow: 0 0 0.75rem rgba(var(--terUser), 0.5);
            }
        }

        .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: inherit;
                margin: 0 1rem;
                
                h2 {
                    font-size: 3rem;
                    color: rgba(var(--secUser), 0.6);
                    margin-bottom: 1rem;
                    text-align: justify;
                    text-align-last: justify;
                    text-justify: inter-character;
                    text-transform: uppercase;
                    text-shadow:
                        1px 1px 0 rgba(255, 255, 255, 0.125),       // highlight (up-left)
                        -0.125rem -0.125rem 0 rgba(0, 0, 0, 0.8)    // shadow (down-right)
                    ;

                    span {
                        color: rgba(var(--quaUser), 0.6);
                    }
                }
            }
        }
    }
}

@media (min-width: 1200px) {
    body .container {
        max-width: 1200px;
    }
}

@media (orientation: landscape) and (max-width: 1023px) {
    body .container {
        padding: 0.4rem 1rem;

        .navbar {
            padding: 0.2rem 0;

            .navbar-brand h1 {
                font-size: 1.2rem;
            }
            .btn-primary {
                width: 3rem;
                height: 3rem;
                font-size: 0.75rem;
                border-width: 0.125rem;
            }
        }

        .row {
            padding: 0.5rem 0;

            .col-lg-6 h2 {
                font-size: 2rem;
                margin-bottom: 0.5rem;
                // text-justify: inter-character is Firefox-only; approximate for Safari/Chrome
                letter-spacing: 1em;
                text-align: center;
                text-align-last: center;
            }
        }
    }

    #id_footer {
        height: 3rem;
        padding: 0.4rem 1rem;
        gap: 0.2rem;

        #id_footer_nav a {
            font-size: 1.4rem;
        }
    }
}

@media (orientation: portrait) and (max-width: 500px) {
    body .container  {
        .navbar {
            padding: 0 0 0.25rem 0;
            .navbar-brand h1 {
                font-size: 1.2rem;
            }
    
            .btn-primary {
                    width: 3rem;
                    height: 3rem;
                    font-size: 0.75rem;
                    border-width: 0.125rem;
            }
        }

        .row .col-lg-6 h2 {
            text-align: center;
            text-align-last: center;
            letter-spacing: 0.33em;
            margin: 0;
            font-size: 2rem;

            &#id_dash_wallet {
                letter-spacing: 0.25em;
            }
        }
    }
}

@media (min-width: 1024px) and (max-height: 700px) {
    body .container .navbar {
        padding: 0.5rem 0;

        .navbar-brand h1 {
            font-size: 1.4rem;
        }
    }

    #id_footer {
        height: 3.5rem;
        padding: 0.7rem 1rem;
        gap: 0.35rem;

        #id_footer_nav a {
            font-size: 1.2rem;
        }
    }
}

#id_footer {
    flex-shrink: 0;
    height: 6rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
    padding: 1rem 1rem;
    border-top: 0.1rem solid rgba(var(--secUser), 0.3);
    background: linear-gradient(
        to top,
        rgba(var(--priUser), 1) 25%,
        transparent 100%
    );

    #id_footer_nav {
        display: flex;
        justify-content: space-evenly;
        width: 80%;
        max-width: 500px;

        a {
            font-size: 1.75rem;
            color: rgba(var(--secUser), 0.6);
            text-shadow:
                0 0 0.25rem rgba(0, 0, 0, 0.25),
            ;
            
            &.active {
                color: rgba(var(--quaUser), 1);
                text-shadow:
                    0 0 0.5rem rgba(0, 0, 0, 0.5),
                ;
            }
            
            &:hover {
                color: rgba(var(--quaUser), 1);
                text-shadow:
                    0 0 1rem rgba(0, 0, 0, 0.25),
                    0 0 0.5rem rgba(var(--ninUser), 0.25)
                ;
                
            }
        }
    }

    .footer-container {
        small {
            font-size: 0.7rem;
            opacity: 0.6;
        }
    }
}