_form.scss

/**
 * Forms
 * --------------------------------------------------
 */

// Make all forms have space below them
form {
  margin: 0 0 $line-height-base;
}

// Groups of fields with labels on top (legends)
legend {
  display: block;
  margin-bottom: $line-height-base;
  padding: 0;
  width: 100%;
  border: $input-border-width solid $input-border;
  color: $dark;
  font-size: $font-size-base * 1.5;
  line-height: $line-height-base * 2;

  small {
    color: $stable;
    font-size: $line-height-base * .75;
  }
}

// Set font for forms
label,
input,
button,
select,
textarea {
  @include font-shorthand($font-size-base, normal, $line-height-base); // Set size, weight, line-height here
}
input,
button,
select,
textarea {
  font-family: $font-family-base; // And only set font-family here for those that need it (note the missing label element)
}


// Input List
// -------------------------------

.item-input {
  @include display-flex();
  @include align-items(center);
  position: relative;
  overflow: hidden;
  padding: 6px 0 5px 8px;

  input {
    @include border-radius(0);
    @include flex(1, 0, 220px);
    @include appearance(none);
    margin: 0;
    padding-right: 24px;
    background-color: transparent;
  }

  .button .icon {
    @include flex(0, 0, 24px);
    position: static;
    display: inline-block;
    height: auto;
    text-align: center;
    font-size: 16px;
  }

  .button-bar {
    @include border-radius(0);
    @include flex(1, 0, 220px);
    @include appearance(none);
  }

  .icon {
    min-width: 14px;
  }
}

.item-input-inset {
  @include display-flex();
  @include align-items(center);
  position: relative;
  overflow: hidden;
  padding: ($item-padding / 3) * 2;
}

.item-input-wrapper {
  @include display-flex();
  @include flex(1, 0);
  @include align-items(center);
  @include border-radius(4px);
  padding-right: 8px;
  padding-left: 8px;
  background: #eee;
}

.item-input-inset .item-input-wrapper input {
  padding-left: 4px;
  height: 29px;
  background: transparent;
  line-height: 18px;
}

.item-input-wrapper ~ .button {
  margin-left: ($item-padding / 3) * 2;
}

.input-label {
  @include flex(1, 0, 100px);
  display: table;
  padding: 7px 10px 7px 3px;
  max-width: 200px;
  width: 35%;
  color: $input-label-color;
  font-weight: bold;
  font-size: $font-size-base;
}

.placeholder-icon {
  color: #aaa;
  &:first-child {
    padding-right: 6px;
  }
  &:last-child {
    padding-left: 6px;
  }
}

.item-stacked-label {
  display: block;
  background-color: transparent;
  box-shadow: none;

  .input-label, .icon {
    display: inline-block;
    padding: 4px 0;
    vertical-align: middle;
  }
}

.item-stacked-label input,
.item-stacked-label textarea {
  @include border-radius(2px);
  padding: 4px 8px 3px;
  border: none;
  background-color: $input-bg;
}
.item-stacked-label input {
  overflow: hidden;
  height: $line-height-computed + $font-size-base + 12px;
}

.item-floating-label {
  display: block;
  background-color: transparent;
  box-shadow: none;

  .input-label {
    position: relative;
    padding: 5px 0 0 0;
    opacity: 0;
    top: 10px;
    @include transition(opacity .15s ease-in, top .2s linear);

    &.has-input {
      opacity: 1;
      top: 0;
      @include transition(opacity .15s ease-in, top .2s linear);
    }
  }
}


// Form Controls
// -------------------------------

// Shared size and type resets
textarea,
input[type="text"],
input[type="password"],
input[type="datetime"],
input[type="datetime-local"],
input[type="date"],
input[type="month"],
input[type="time"],
input[type="week"],
input[type="number"],
input[type="email"],
input[type="url"],
input[type="search"],
input[type="tel"],
input[type="color"] {
  display: block;
  padding-top: 2px;
  height: $line-height-computed + $font-size-base;
  color: $input-color;
  vertical-align: middle;
  font-size: $font-size-base;
  line-height: $font-size-base + 2;
}

.platform-ios,
.platform-android {
  input[type="datetime-local"],
  input[type="date"],
  input[type="month"],
  input[type="time"],
  input[type="week"] {
    padding-top: 8px;
  }
}

input,
textarea {
  width: 100%;
}

// Reset height since textareas have rows
textarea {
  height: auto;
}

// Everything else
textarea,
input[type="text"],
input[type="password"],
input[type="datetime"],
input[type="datetime-local"],
input[type="date"],
input[type="month"],
input[type="time"],
input[type="week"],
input[type="number"],
input[type="email"],
input[type="url"],
input[type="search"],
input[type="tel"],
input[type="color"] {
  border: 0;
}

// Position radios and checkboxes better
input[type="radio"],
input[type="checkbox"] {
  margin: 0;
  line-height: normal;
}

// Reset width of input images, buttons, radios, checkboxes
input[type="file"],
input[type="image"],
input[type="submit"],
input[type="reset"],
input[type="button"],
input[type="radio"],
input[type="checkbox"] {
  width: auto; // Override of generic input selector
}

// Set the height of file to match text inputs
input[type="file"] {
  line-height: $input-height-base;
}

// Text input classes to hide text caret during scroll
.previous-input-focus,
.cloned-text-input + input,
.cloned-text-input + textarea {
  position: absolute;
  left: -9999px;
  width: 200px;
}


// Placeholder
// -------------------------------
input,
textarea {
  @include placeholder();
}


// DISABLED STATE
// -------------------------------

// Disabled and read-only inputs
input[disabled],
select[disabled],
textarea[disabled],
input[readonly]:not(.cloned-text-input),
textarea[readonly]:not(.cloned-text-input),
select[readonly] {
  background-color: $input-bg-disabled;
  cursor: not-allowed;
}
// Explicitly reset the colors here
input[type="radio"][disabled],
input[type="checkbox"][disabled],
input[type="radio"][readonly],
input[type="checkbox"][readonly] {
  background-color: transparent;
}