admin_api/public/assets/scss/mixins/_buttons.scss

@mixin social-button($color) {
    background: $color;
    color: $white;
  
    &:hover,
    &:focus {
      background: darken($color, 10%);
      color: $white;
    }
    &.btn-social-icon-text {
      padding: 0 1.5rem 0 0;
      background: lighten($color, 10%);
      i {
        background: $color;
        padding: .75rem;
        display: inline-block;
        margin-right: 1.5rem;
      }
    }
}
@mixin social-outline-button($color) {
  border: 1px solid $color;
  color: $color;
  &:hover {
    background: $color;
    color: $white;
  }
}
@mixin button-inverse-variant($color, $color-hover: $white) {
    background-color: rgba($color, 0.2);
    background-image: none;
    border-color: rgba($color, 0);
    &:not(.btn-inverse-light) {
      color: $color;      
    }
    @include hover {
      color: $color-hover;
      background-color: $color;
      border-color: $color;
    }
  
    &.focus,
    &:focus {
      box-shadow: 0 0 0 3px rgba($color, .5);
    }
  
    &.disabled,
    &:disabled {
      color: $color;
      background-color: transparent;
    }
  
    &.active,
    &:active,
    .show > &.dropdown-toggle {
      color: $color-hover;
      background-color: $color;
      border-color: $color;
    }
}
@mixin button-gradient-variant($value) {
    background: $value;
    border: 0;
    &:not([disabled]):not(.disabled):active,
    &:not([disabled]):not(.disabled).active,
    .show > &.dropdown-toggle {
      background: $value;
    }
    &:hover {
      opacity: .8;
    }
    &:not(.btn-gradient-light) {
      color: $white;      
      &:hover,
      &:focus,
      &:active {
        color: $white;
      }
    }
    @include transition(opacity .3s ease);
}