webseite/assets/scss/parts/_form.scss

/* Form */
form {
  margin: 0 0 _size(element-margin) 0;
}

label {
  color: _palette(fg-bold);
  display: block;
  font-size: 0.9em;
  font-weight: _font(weight-bold);
  margin: 0 0 (_size(element-margin) * 0.5) 0;
}

input[type="text"],
input[type="password"],
input[type="email"],
select,
textarea {
  @include vendor('appearance', 'none');
  @include vendor('transition', 'border-color #{_duration(transition)} ease-in-out');

  background: transparent;
  border-radius: _size(border-radius);
  border: solid 1px _palette(border);
  color: inherit;
  display: block;
  outline: 0;
  padding: 0 1em;
  text-decoration: none;
  width: 100%;

  &:invalid {
    box-shadow: none;
  }

  &:focus {
    border-color: _palette(accent1);
  }
}

.select-wrapper {
  @include icon;

  display: block;
  position: relative;

  &::before {
    color: _palette(border);
    content: '\f078';
    display: block;
    height: _size(element-height);
    line-height: _size(element-height);
    pointer-events: none;
    position: absolute;
    right: 0;
    text-align: center;
    top: 0;
    width: _size(element-height);
  }

  select::-ms-expand {
    display: none;
  }
}

input[type="text"],
input[type="password"],
input[type="email"],
select {
  height: _size(element-height);
}

textarea {
  padding: 0.75em 1em;
}

select {
  option {
    background-color: _palette(bg);
    color: _palette(fg-bold);
  }

  &:focus {
    &::-ms-value {
      background: transparent;
    }
  }
}

input[type="checkbox"],
input[type="radio"], {
  @include vendor('appearance', 'none');
  display: block;
  float: left;
  margin-right: -2em;
  opacity: 0;
  width: 1em;
  z-index: -1;

  & + label {
    @include icon;

    color: _palette(fg);
    cursor: pointer;
    display: inline-block;
    font-size: 1em;
    font-weight: _font(weight);
    padding-left: (_size(element-height) * 0.6) + 0.75em;
    padding-right: 0.75em;
    position: relative;

    &::before {
      border-radius: _size(border-radius);
      border: solid 1px _palette(border);
      content: '';
      display: inline-block;
      height: (_size(element-height) * 0.6);
      left: 0;
      line-height: (_size(element-height) * 0.575);
      position: absolute;
      text-align: center;
      top: 0;
      width: (_size(element-height) * 0.6);
    }
  }

  &:checked + label {
    &::before {
      background: _palette(border2-bg);
      color: _palette(fg-bold);
      content: '\f00c';
    }
  }

  &:focus + label {
    &::before {
      border-color: _palette(accent1);
    }
  }
}

input[type="checkbox"] {
  & + label {
    &::before {
      border-radius: _size(border-radius);
    }
  }
}

input[type="radio"] {
  & + label {
    &::before {
      border-radius: 100%;
    }
  }
}

::-webkit-input-placeholder {
  color: _palette(fg-light) !important;
  opacity: 1;
}

:-moz-placeholder {
  color: _palette(fg-light) !important;
  opacity: 1;
}

::-moz-placeholder {
  color: _palette(fg-light) !important;
  opacity: 1;
}

:-ms-input-placeholder {
  color: _palette(fg-light) !important;
  opacity: 1;
}

.formerize-placeholder {
  color: _palette(fg-light) !important;
  opacity: 1;
}