File: assets/vendor/bootstrap-md/scss/free/_forms.scss

// Forms basic
// Input +  label wrapper styles
.md-form {

  // Text inputs
  input:not([type]),
  input[type="text"]:not(.browser-default),
  input[type="password"]:not(.browser-default),
  input[type="email"]:not(.browser-default),
  input[type="url"]:not(.browser-default),
  input[type="time"]:not(.browser-default),
  input[type="date"]:not(.browser-default),
  input[type="datetime"]:not(.browser-default),
  input[type="datetime-local"]:not(.browser-default),
  input[type="tel"]:not(.browser-default),
  input[type="number"]:not(.browser-default),
  input[type="search"]:not(.browser-default),
  input[type="search-md"],
  textarea.md-textarea {

    // General Styles
    box-sizing: content-box;
    background-color: transparent;
    border: none;
    border-bottom: 1px solid $input-border-color;
    border-radius: 0;
    outline: none;
    box-shadow: none;
    transition: $input-transition;

    // Focused input style
    &:focus:not([readonly]) {
      border-bottom: 1px solid $input-md-focus-color;
      box-shadow: 0 1px 0 0 $input-md-focus-color;

      // Focused label style
      + label {
        color: $input-md-focus-color;
      }
    }

    // Form message shared styles
    + label::after {
      position: absolute;
      top: $input-label-after-top;
      display: block;
      content: "";
      opacity: 0;
      transition: $input-label-after-transition;
    }

    // Valid input style
    &.valid,
    &:focus.valid {
      border-bottom: 1px solid $input-success-color;
      box-shadow: 0 1px 0 0 $input-success-color;
    }

    &.valid + label:after,
    &:focus.valid + label:after {
      color: $input-success-color;
      content: attr(data-success);
      opacity: 1;
    }

    // Invalid input style
    &.invalid,
    &:focus.invalid {
      border-bottom: 1px solid $input-error-color;
      box-shadow: 0 1px 0 0 $input-error-color;
    }

    &.invalid + label:after,
    &:focus.invalid + label:after {
      color: $input-error-color;
      content: attr(data-error);
      opacity: 1;
    }

    &.form-control.valid + label:after,
    &.form-control:focus.valid + label:after {
      top: $input-label-valid-top;
    }

    &.form-control.invalid + label:after,
    &.form-control:focus.invalid + label:after {
      top: $input-label-invalid-top;
    }

    &.form-control-lg.valid + label:after,
    &.form-control-lg:focus.valid + label:after {
      top: $input-label-valid-top-lg;
    }

    &.form-control-lg.invalid + label:after,
    &.form-control-lg:focus.invalid + label:after {
      top: $input-label-invalid-top-lg;
    }

    &.form-control-sm.valid + label:after,
    &.form-control-sm:focus.valid + label:after {
      top: $input-label-valid-top-sm;
    }

    &.form-control-sm.invalid + label:after,
    &.form-control-sm:focus.invalid + label:after {
      top: $input-label-invalid-top-sm;
    }
  }

  > input[type="date"]:not(.browser-default) + label {
    transform: translateY(-27px) scale(.8);
    transform-origin: 0 0;
  }

  > input[type]:-webkit-autofill:not(.browser-default):not([type="search"]) + label,
  > input[type="time"]:not(.browser-default) + label {
    font-size: .8rem;
    transform: translateY(-25px);
    transform-origin: 0 0;
  }

  .was-validated {
    input[type="text"] {
      &:valid {
        + label {
          color: $input-success-color !important;
        }
      }

      &:invalid {
        + label {
          color: $input-error-color !important;
        }
      }
    }

    .form-control {
      &:valid:focus {
        box-shadow: 0 1px 0 0 $input-success-color !important;
      }

      &:valid {
        border-color: $input-success-color !important;
      }

      &:invalid:focus {
        box-shadow: 0 1px 0 0 $input-error-color !important;
      }

      &:invalid {
        border-color: $input-error-color !important;
      }
    }
  }

  // Input with label
  .form-control {
    height: auto;
    padding: $input-form-control-padding-top 0 $input-form-control-padding-bottom 0;
    margin: 0 0 $input-form-control-margin-bottom 0;
    background-color: transparent;
    border-radius: 0;

    &:focus {
      box-shadow: none;
    }

    &:disabled,
    &[readonly] {
      background-color: transparent;
      border-bottom: 1px solid $grey-lighten-1;
    }

    &.is-valid {
      border-color: $input-success-color;

      &:focus {
        border-color: $input-success-color !important;
        box-shadow: 0 1px 0 0 $input-success-color !important;
      }
    }

    &.is-invalid {
      border-color: $input-error-color;

      &:focus {
        border-color: $input-error-color !important;
        box-shadow: 0 1px 0 0 $input-error-color !important;
      }
    }

    &.is-valid,
    &.is-invalid {
      background-position: center right !important;
    }
  }

  @include make-input($input-validate-mb, $input-label-font-size, $input-label-active-font-size, $input-prefix-top, $input-prefix-font-size, $input-prefix-margin-left, $input-prefix-width, $input-form-text-ml);
  position: relative;
  margin-top: $input-md-form-margin-top;
  margin-bottom: $input-md-form-margin-bottom;

  label {
    position: absolute;
    top: 0;
    left: 0;
    font-size: 1rem;
    color: $input-label-color;
    cursor: text;
    transition: transform .2s ease-out, color .2s ease-out;
    transform: translateY(12px);
    transform-origin: 0% 100%;

    &.active {
      transform: translateY(-14px) scale(.8);
    }
  }

  .prefix {
    position: absolute;
    transition: $input-prefix-transition;

    &.active {
      color: $input-md-focus-color;
    }
  }

  &.form-lg {
    @include make-input($input-validate-mb-lg, $input-label-font-size-lg, $input-label-active-font-size-lg, $input-prefix-top-lg, $input-prefix-font-size-lg, $input-prefix-margin-left-lg, $input-prefix-width-lg, $input-form-text-ml-lg);
  }

  &.form-sm {
    @include make-input($input-validate-mb-sm, $input-label-font-size-sm, $input-label-active-font-size-sm, $input-prefix-top-sm, $input-prefix-font-size-sm, $input-prefix-margin-left-sm, $input-prefix-width-sm, $input-form-text-ml-sm);
  }

  // Textarea
  textarea {
    &.md-textarea {
      padding: $textarea-padding 0;
      overflow-y: hidden;
    }

    &.md-textarea-auto {
      padding: 0;
      padding-top: $textarea-padding;
    }

    // Label color for textarea
    // ~ label {
    //   &.active {
    //     color: $input-md-focus-color;
    //   }
    // }
  }

  &.md-outline {
    position: relative;
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;

    input[type="text"],
    input[type="password"],
    input[type="email"],
    input[type="url"],
    input[type="time"],
    input[type="date"],
    input[type="datetime-local"],
    input[type="tel"],
    input[type="number"],
    input[type="search-md"],
    input[type="search"],
    textarea.md-textarea {
      // General Styles
      box-sizing: border-box;
      background-color: transparent;
      border: 1px solid #dadce0;
      border-radius: 4px;
      outline: none;
      box-shadow: none;
      transition: all .3s;

      // Focused input style
      &:focus:not([readonly]) {
        border-color: #4285f4;
        box-shadow: inset 0 0 0 1px #4285f4;

        // Focused label style
        + label {
          color: #4285f4;
        }
      }

      // Valid input style
      &.valid,
      &:focus.valid {
        border-color: $input-success-color;
        box-shadow: inset 0 0 0 1px $input-success-color;
      }

      &:focus:not([readonly]).valid + label,
      &.valid + label:after,
      &:focus.valid + label:after {
        color: $input-success-color;
        content: attr(data-success);
        opacity: 1;
      }

      // Invalid input style
      &.invalid,
      &:focus.invalid {
        border-color: $input-error-color;
        box-shadow: inset 0 0 0 1px $input-error-color;
      }

      &:focus:not([readonly]).invalid + label,
      &.invalid + label:after,
      &:focus.invalid + label:after {
        color: $input-error-color;
        content: attr(data-error);
        opacity: 1;
      }

      &.form-control.valid + label:after,
      &.form-control:focus.valid + label:after {
        position: absolute;
        top: 4rem;
        left: 0;
      }

      &.form-control.invalid + label:after,
      &.form-control:focus.invalid + label:after {
        position: absolute;
        top: 4rem;
        left: 0;
      }
    }

    > input[type]:-webkit-autofill:not(.browser-default):not([type="search"]) + label,
    > input[type="time"]:not(.browser-default) + label {
      left: 8px;
      padding-right: 5px;
      padding-left: 5px;
      font-size: 1rem;
      font-weight: 500;
      background: #fff;
      transform: translateY(-9px) scale(.8);
      transform-origin: 0 0;
    }

    > input[type]:-webkit-autofill:not(.browser-default):not([type="search"]) + label.active,
    > input[type="time"]:not(.browser-default) + label.active {
      transform: translateY(-9px) scale(.8);
      transform-origin: 0 0;
    }

    @-webkit-keyframes autofill {
      to {
        color: #495057;
        background: transparent;
      }
    }

    @keyframes autofill {
      to {
        color: #495057;
        background: transparent;
      }
    }

    input:-webkit-autofill {
      -webkit-animation-name: autofill;
      animation-name: autofill;
      -webkit-animation-fill-mode: both;
      animation-fill-mode: both;
    }

    .form-control {
      padding: .375rem .75rem;
    }

    label {
      position: absolute;
      top: 0;
      left: 0;
      padding-left: 10px;
      font-size: 1rem;
      color: #757575;
      cursor: text;
      transition: transform .2s ease-out, color .2s ease-out;
      transform: translateY(9px);
      transform-origin: 0% 100%;

      &.active {
        left: 8px;
        padding-right: 5px;
        padding-left: 5px;
        font-weight: 500;
        background: #fff;
        transform: translateY(-13px) scale(.8);
      }
    }

    &.form-lg {
      .form-control {
        &.form-control-lg {
          padding: .5rem .725rem;
        }
      }

      label {
        font-size: 1.25rem;
        transform: translateY(10px);

        &.active {
          font-size: 1.1rem;
          transform: translateY(-14px) scale(.8);
        }
      }

      .prefix {
        top: .65rem;
        font-size: 25px;

        ~ input,
        ~ textarea {
          width: calc(100% - 2.2rem);
          margin-left: 2.2rem;
        }

        ~ label {
          margin-left: 2.2rem;
        }

        ~ .form-text {
          margin-left: 2.3rem;
        }
      }
    }

    &.form-sm {
      .form-control {
        &.form-control-sm {
          padding: .25rem .625rem;
        }
      }

      label {
        font-size: .8rem;
        transform: translateY(8px);

        &.active {
          font-size: .85rem;
          transform: translateY(-12px) scale(.8);
        }
      }

      .prefix {
        top: .5rem;
        font-size: 15px;

        ~ input,
        ~ textarea {
          width: calc(100% - 1.6rem);
          margin-left: 1.6rem;
        }

        ~ label {
          margin-left: 1.6rem;
        }

        ~ .form-text {
          margin-left: 1.7rem;
        }
      }
    }

    .prefix {
      position: absolute;
      top: .6rem;
      font-size: 20px;
      transition: color .2s;

      &:focus {
        color: #4285f4;
      }

      ~ input,
      ~ textarea {
        width: calc(100% - 2rem);
        margin-left: 2rem;
      }

      ~ label {
        margin-left: 2rem;
      }

      ~ .form-text {
        margin-left: 2.1rem;
      }
    }

    .character-counter {
      margin-top: -.5rem;
    }
  }

  &.md-bg {

    input[type="text"],
    input[type="password"],
    input[type="email"],
    input[type="url"],
    input[type="time"],
    input[type="date"],
    input[type="datetime-local"],
    input[type="tel"],
    input[type="number"],
    input[type="search-md"],
    input[type="search"],
    textarea.md-textarea {
      &:focus:not([readonly]) {
        border-bottom: none;
        box-shadow: none;
      }

      box-sizing: border-box;
      padding: 10px 5px;
      background: #f5f5f5 no-repeat;
      background-image: linear-gradient(to bottom, $input-md-focus-color, $input-md-focus-color), linear-gradient(to bottom, $input-border-color, $input-border-color);
      background-position: 50% 100%, 50% 100%;
      background-size: 0 2px, 100% 1px;
      border: 0;
      border-top-left-radius: .3rem;
      border-top-right-radius: .3rem;
      transition: background-size .3s cubic-bezier(.64, .09, .08, 1);

      &:focus {
        background-color: #dcdcdc;
        background-size: 100% 2px, 100% 1px;
        outline: none;
      }
    }

    > input[type="date"]:not(.browser-default) + label {
      transform: translateY(-12px) scale(.8);
      transform-origin: 0 0;
    }

    > input[type]:-webkit-autofill:not(.browser-default):not([type="search"]) + label,
    > input[type="time"]:not(.browser-default) + label {
      font-size: .8rem;
      transform: translateY(-12px);
      transform-origin: 0 0;
    }

    .form-control {
      padding: 1.1rem .7rem .4rem !important;
    }

    label {
      top: 0;
      padding-left: .7rem;
      font-size: 1rem;
      transition: transform .2s ease-out, color .2s ease-out;
      transform: translateY(13px);
      transform-origin: 0% 100%;

      &.active {
        padding-left: .75rem;
        font-weight: 500;
        transform: translateY(-3px) scale(.8);
      }
    }

    &.form-lg {

      label {
        transform: translateY(16px);

        &.active {
          transform: translateY(-4px) scale(.8);
        }
      }
    }

    &.form-sm {

      label {
        transform: translateY(11px);

        &.active {
          transform: translateY(-2px) scale(.8);
        }
      }
    }
  }
}

.md-form .form-control.is-invalid,
.was-validated .md-form .form-control:invalid {
  padding-right: 0;
}

.md-form .form-control.is-valid,
.was-validated .md-form .form-control:valid {
  padding-right: 0;
}

.needs-validation .md-form label {
  left: .3rem;
}

// Custom file input browser support
@each $lang,
  $text in $custom-mdb-file-text {
  .custom-file-input {
    &:lang(#{$lang}) {
      & ~ .custom-file-label {
        &::after {
          content: $text;
        }
      }
    }
  }
}