mdb-ui-kit/sass/_inputs.scss

// This file has been autogenerated by grunt task lessToSass. Any changes will be overwritten.

@import '_inputs-size';

// usage: @include form-group-validation-state($input-danger);
@mixin form-group-validation-state($name, $color){

  &.#{$name} { // e.g. has-error
    .form-control {
      box-shadow: none;
    }
    &.is-focused .form-control {
      background-image: linear-gradient($color, $color), linear-gradient($input-underline-color, $input-underline-color);
    }
    label.control-label,
    .help-block {
      color: $color;
    }
  }
}

.form-control {
  border: 0;
  background-image: linear-gradient($primary, $primary), linear-gradient($input-underline-color, $input-underline-color);
  background-size: 0 2px, 100% 1px;
  background-repeat: no-repeat;
  background-position: center bottom, center calc(100% - 1px);
  background-color: rgba(0, 0, 0, 0);
  transition: background 0s ease-out;

  .form-group.is-focused & {
    outline: none;
    background-image: linear-gradient($primary, $primary), linear-gradient($input-underline-color, $input-underline-color);
    background-size: 100% 2px, 100% 1px;
    box-shadow: none;
    transition-duration: 0.3s;

    .material-input:after {
      background-color: $input-default;
    }
  }

  @include material-placeholder {
    color: $input-placeholder-color;
    font-size: $md-input-font-size-base;
    font-weight: normal;
  
}

  //&::-moz-placeholder {
  //  color: $input-placeholder-color;
  //  font-size: $md-input-font-size-base;
  //  font-weight: normal;
  //}
  //&:-ms-input-placeholder {
  //  color: $input-placeholder-color;
  //  font-size: $md-input-font-size-base;
  //  font-weight: normal;
  //}
  //&::-webkit-input-placeholder {
  //  color: $input-placeholder-color;
  //  font-size: $md-input-font-size-base;
  //  font-weight: normal;
  //}

  fieldset[disabled] &,
  & {
    &:textarea {
      height: 40px;
    }

    &,
    .form-group.is-focused & {
      //padding: 0;
      float: none;
      border: 0;
      box-shadow: none;
      border-radius: 0;
      &:disabled {
        border-style: dashed;
        border-bottom: 1px solid #757575;
      }
    }
  }

  &[disabled],
  &[readonly],
  fieldset[disabled] & {
    //background-color: transparent;
    background-color: rgba(0, 0, 0, 0);
  }
}

.form-group {
  position: relative;

  // Labels
  label.control-label { // static label

    // same label properties as form-group placeholder.  could be shared with a ruleset but makes sass conversion painful
    color: $input-placeholder-color;
    font-size: $md-input-font-size-base;
    font-weight: normal;

    margin: 16px 0 0 0; // std and lg
  }
  //.variations(unquote(" label.control-label"), color, $input-placeholder-color); // FIXME: not sure if necessary
  //.variations(unquote(".is-focused label.control-label"), color, $input-default);

  // sm
  &.form-group-sm {
    label.control-label { // static label
      font-size: $floating-label-size-ratio * $md-input-font-size-small; // same as focused size of floating FIXME shouldn't this be full size?
      margin: 12px 0 0 0; // sm only
    }
  }

  // lg
  &.form-group-lg {
    label.control-label { // static label
      font-size: $floating-label-size-ratio * $md-input-font-size-large; // same as focused size of floating FIXME shouldn't this be full size?
    }
  }

  // Hints
  .hint {
    position: absolute;
    font-size: 80%;
    display: none;
  }

  &.is-focused {
    .hint {
      display: block;
    }
  }

  // SASS conversion note: please mirror any content change in _mixins-shared.scss bg-img-variations-content
  @include bg-img-variations(unquote(".is-focused .form-control"), $primary);

  @include form-group-validation-state(has-warning, $input-warning);
  @include form-group-validation-state(has-error, $input-danger);
  @include form-group-validation-state(has-success, $input-success);
  @include form-group-validation-state(has-info, $input-info);

  textarea {
    resize: none;
  }
  textarea ~ .form-control-highlight {
    margin-top: -11px;
  }

  select ~ .material-input:after {
    display: none;
  }

  // Fix for OS X
  select {
    appearance: none;
  }
}

select.form-control {

  border: 0;
  box-shadow: none;
  border-radius: 0;

  .form-group.is-focused & {
    box-shadow: none;
    border-color: #757575;
  }

  &[multiple] {
    &,
    .form-group.is-focused & {
      height: 85px;
    }
  }
}

// Reference http://www.google.com/design/spec/components/text-fields.html
// MDL implementation: http://www.getmdl.io/components/index.html#textfields-section

// this is for input-sm and input-lg directly on input.  Recommended way is form-group-sm and form-group-lg instead.
@mixin input-size-floating-label($name, $size){
  .form-control.#{$name} ~ & {
    font-size: $size;
    top: 7px;
  }

  .form-group.is-focused .form-control.#{$name} ~ .form-group.is-focused &,
  .form-group.is-empty .form-control.#{$name} ~ .form-group.is-empty & {
    top: $floating-label-size-ratio * -$size;
    font-size: $floating-label-size-ratio * $size;
  }
}

// Do not nest label.floating-label inside .form-group - it messes with ~ selector
label.control-label.floating-label {
  font-size: $md-input-font-size-base; // Input sizes
  position: absolute;
  pointer-events: none;
  left: 0px;
  top: -1 * $md-input-padding-base-vertical; // place the floating label to look like a placeholder with input padding
  transition: 0.3s ease all;

  .form-group.is-focused & {
    label.control-label {
      font-size: $md-input-label-font-size-base; // 12px
    }
  }

  // sizing
  .form-group.is-focused &,
  .form-group:not(.is-empty) & {
    top: -1 * ($md-input-label-font-size-base + $md-input-padding-base-vertical); // FIXME this needs to be calculated and moved up to .is-focused !!!
    font-size: $md-input-label-font-size-base;
  }

  @include input-size-floating-label(input-sm, $md-input-font-size-small);
  @include input-size-floating-label(input-lg, $md-input-font-size-large);
}

.input-group {
  .form-group {
    .form-control {
      float: none;
    }
    margin-right: 5px;
    margin-left: 5px;
  }
  .input-group-addon {
    border: 0;
    background: transparent;
  }
  .input-group-btn .btn {
    border-radius: 4px;
    margin: 0;
  }
}

// Input files (kinda hack)
.form-group input[type=file] {
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 100;
}

// Ugly override of Bootstrap border
fieldset[disabled] .form-control:disabled,
.form-group .form-control:disabled,
.form-control:disabled,
fieldset[disabled] .form-control:focus:disabled,
.form-group .form-control:focus:disabled,
.form-control:focus:disabled,
.form-group.is-focused fieldset[disabled] .form-control:disabled,
.form-group.is-focused .form-group .form-control:disabled,
.form-group.is-focused .form-control:disabled {
  border: 0;
}