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;
    }
  }
}

@mixin form-group-size-variant($placeholder-font-size, $label-top-margin, $vertical-padding, $line-height, $label-as-placeholder-shim){
  $static-font-size: ceil(($label-floating-size-ratio * $placeholder-font-size)) !default;
  $static-line-height: ($label-floating-size-ratio * $line-height) !default;

  $label-as-placeholder-top: -1 * ($vertical-padding + $label-as-placeholder-shim) !default;
  $label-top: $label-as-placeholder-top - ($placeholder-font-size + $vertical-padding) !default;

  $help-block-font-size: ceil(($help-block-size-ratio * $placeholder-font-size)) !default;
  $help-block-line-height: ($help-block-size-ratio * $line-height) !default;

  // form-group margin-top must be large enough for the label and the label's top padding since label is absolutely positioned
  margin: ($label-top-margin + $static-font-size) 0 0 0;

  .form-control {
    @include material-placeholder {
      font-size: $placeholder-font-size;
    
}
    margin-bottom: $vertical-padding; // must be specified to give help-block vertical space
  }

  // upon collapsing margins, the largest margin is honored which collapses the form-control margin, so the form-control margin
  //  must also be expressed as form-group padding
  padding-bottom: $vertical-padding;

  .help-block {
    margin-top: 0px; // allow the input margin to set-off the top of the help-block
    font-size: $help-block-font-size;
  }

  // generic labels used anywhere in the form (not control-label)
  label {
    font-size: $placeholder-font-size;
    line-height: $line-height;
    font-weight: normal;
  }

  // smaller focused or static size
  label.control-label {
    font-size: $static-font-size;
    line-height: $static-line-height;
  }

    // larger labels as placeholders
  &.label-floating,
  &.label-placeholder {
    label.control-label {
      top: $label-as-placeholder-top; // place the floating label to look like a placeholder with input padding
      font-size: $placeholder-font-size;
      line-height: $line-height;
    }
  }

  // static, focused, or autofill floating labels
  &.label-static,
  &.label-floating.is-focused,
  &.label-floating:not(.is-empty),
  &.label-floating input.form-control:-webkit-autofill {
    & ~ label.control-label, // #559 webkit chrome autofill `.form-group.label-floating input.form-control:-webkit-autofill ~ label.control-label`
    label.control-label {
      top: $label-top;
      left: 0;
      // must repeat because the selector above is more specific than the general label sizing
      font-size: $static-font-size;
      line-height: $static-line-height;
    }
  }
}

.form-group {
  //border: solid 1px red;
  position: relative;

  // -----
  // Inputs
  //
  // Reference http://www.google.com/design/spec/components/text-fields.html
  // MDL implementation: http://www.getmdl.io/components/index.html#textfields-section
  .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;
    float: none;
    box-shadow: none;
    border-radius: 0;

    // Placeholders and and labels-as-placeholders should look the same
    @include material-placeholder {
      color: $input-placeholder-color;
      font-weight: normal;
    
}


    //&:textarea {    // appears to be an invalid selector
    //  height: 40px;
    //}

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

    &[disabled],
    fieldset[disabled] & {
      background-image: none;
      border-bottom: 1px dotted $input-underline-color;
    }
  }

  &.is-focused .form-control {
    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;
    }
  }

  // -----
  // Labels
  //
  // Reference http://www.google.com/design/spec/components/text-fields.html
  // MDL implementation: http://www.getmdl.io/components/index.html#textfields-section
  &.label-static,
  &.label-placeholder,
  &.label-floating {

    label.control-label {
      position: absolute;
      pointer-events: none;
      transition: 0.3s ease all;
    }
  }

  // generic labels and control labels
  label,
  label.control-label {
    // same label properties as form-group placeholder
    color: $input-placeholder-color;
    font-weight: normal;
  }

  label.control-label {
    // same label properties as form-group placeholder
    margin: 16px 0 0 0; // std and lg
  }

  // hide label-placeholders when the field is not empty
  &.label-placeholder:not(.is-empty){
    label.control-label{
      display: none;
    }
  }

  @include variations(unquote(" label.control-label"), color, $input-placeholder-color);  // default label color variations
  @include variations(unquote(".is-focused label.control-label"), color, $input-default); // focused label color variations
  @include variations(unquote(".is-focused.label-placeholder label.control-label"), color, $input-placeholder-color);  // default label color variations

  // default floating size/location
  @include form-group-size-variant($md-input-font-size-base, $md-label-top-margin-base, $md-input-padding-base-vertical, $md-input-line-height-base, $md-label-as-placeholder-shim-base);

  // sm floating size/location
  &.form-group-sm {
    @include form-group-size-variant($md-input-font-size-small, $md-label-top-margin-small, $md-input-padding-small-vertical, $md-input-line-height-small, $md-label-as-placeholder-shim-small);
  }

  // lg floating size/location
  &.form-group-lg {
    @include form-group-size-variant($md-input-font-size-large, $md-label-top-margin-large, $md-input-padding-large-vertical, $md-input-line-height-large, $md-label-as-placeholder-shim-large);
  }

  // Hints - position: absolute approach - uses no vertical space, text wrapping - not so good.
  .help-block {
    position: absolute; // do not use position: absolute because width/wrapping isn't automatic and overflows occur
    display: none;
  }

  &.is-focused {
    .help-block {
      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;
    & ~ .form-control-highlight {
      margin-top: -11px;
    }
  }

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

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

select.form-control {

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

  .form-group.is-focused & {
    box-shadow: none;
    border-color: $input-underline-color;
  }

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

@mixin input-group-button-variation($vertical-padding){
  .input-group-btn {
    .btn {
      margin: 0 0 $vertical-padding 0;
    }
  }
}

// ----------------
// input group/addon related styles

// default margin
@include input-group-button-variation($md-input-padding-base-vertical);

.form-group {
  //.form-control {
  //  float: none;
  //}

  // sm margin
  &.form-group-sm {
    @include input-group-button-variation($md-input-padding-small-vertical);
  }

  // lg margin
  &.form-group-lg {
    @include input-group-button-variation($md-input-padding-large-vertical);
  }
}

.input-group {  // may be in or outside of form-group
  .input-group-btn {
    padding: 0 12px; // match addon spacing
  }

  .input-group-addon {
    border: 0;
    background: transparent;
  }
}

// Input files - hide actual input - requires specific markup in the sample.
.form-group input[type=file] {
  opacity: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 100;
}