.btn-theme,
.btn-theme:visited {
    background-color: var(--cor-primaria);
    border-color: var(--cor-primaria);
    color: #fff;
    transition:
        opacity .2s,
        box-shadow .2s,
        transform .1s;    
}

.btn-theme:hover,
.btn-theme:focus,
.btn-theme.focus {
    color: #fff;
    outline: 0;
    opacity: .92;
}

.btn-theme:active,
.btn-theme.active,
.open > .dropdown-toggle.btn-theme,
.btn-theme:active:hover,
.btn-theme.active:hover,
.btn-theme:active:focus,
.btn-theme.active:focus,
.btn-theme:active.focus,
.btn-theme.active.focus {
    color: #fff;
    opacity: .85;
    transform: translateY(1px);
}

.btn-theme:active {
    background-image: none; /* remove o gradiente do Bootstrap 3 */
}

.btn-theme:disabled {
    opacity: .5;
    cursor: not-allowed;
}