_c-form-input.scss

/* ==========================================================================
  c-forms, fieldsets, controls, labels, inputs
  structure of form field component:
  form >
    fieldset.field >
        div.control >
            input
            label
   ========================================================================== */

form {
  padding: .5em 1em 1em;
  &:invalid button {
    &:hover {
      background-color: $d-button-invalid-background-color;
      color: $d-button-invalid-color;
    }
  }
}

select.invalid:invalid,
input.invalid:invalid {
  background-color: $d-input-invalid-background-color;
  transition: all, 4s, ease-out;
}

/* ==========================================================================
  c-fieldset
   ========================================================================== */
fieldset .error {
  font-weight: 200;
  font-style: italic;
  margin-top: 0.5em;
  color: color(danger);
}

fieldset,
.field {
  padding-bottom: 0.6em;
}
.control {
  padding-top: 0.7em;
}

/* ==========================================================================
  c-input
   ========================================================================== */

.control {
  border-bottom: 1px solid #ddd;
  position: relative;
}
input,
.input {
  font-size: $d-input-font-size;
  box-sizing: border-box;
  width: 100%;
  line-height: 1.5;
  height: 2.1em;
  border: none;
  background-color: #fff;
  @include transition;
  margin-top: 12px;
  padding-left: 6px;

  &:focus {
    // border: 2px solid #aaa;
    //outline: 0;
    box-shadow: $d-input-box-shadow;
  }
  &:required::placeholder {
    color: $d-input-placeholder-color;
  }
}

label {
  position: absolute;
  font-size: $d-label-font-size;
  top: 5px;
  left: 4px;
  color: $d-label-color;
}

input:invalid {
  //TODO: replace with boxshadow
  background: $d-input-invalid-background-color;
}

input:placeholder-shown + label {
  opacity: 0;
}

input:not(:placeholder-shown) + label {
  opacity: 0.8;
  display: block;
  position: absolute;
  color: $d-label-color;
  @include transition(opacity, 0.3s, ease-out);
  &::after {
    content: ' *';
    color: $d-label-color;
    font-size: 0.8em;
    position: absolute;
    padding-left: 4px;
  }
}

input:not(:placeholder-shown):invalid {
  background-color: $d-input-invalid-required-background-color;
  @include transition($d-transition-slow);
}

//TODO: clean up
select.invalid:invalid,
input.invalid:invalid {
  background-color: $d-input-invalid-required-background-color;
  @include transition($d-transition-slow);
}

// Inputs
textarea,
.select select {
  line-height: 1.5;
  margin: 0;
  padding: 0.3em 0.6em;
  border: 1px solid #ccc;
  background-color: #fff;
  border-radius: 0.2em;
  transition: all 0.3s;
  display: block;
  margin-bottom: 20px;
}