@use "../functions" as *;
@use "../mixins/border-radius" as *;
@use "../mixins/tokens" as *;
@use "../mixins/transition" as *;

$form-floating-tokens: () !default;

// scss-docs-start form-floating-tokens
// stylelint-disable-next-line scss/dollar-variable-default
$form-floating-tokens: defaults(
  (
    --form-floating-height: calc(3.5rem + (var(--border-width) * 2)),
    --form-floating-line-height: 1.25,
    --form-floating-padding-x: var(--btn-input-padding-x),
    --form-floating-padding-y: 1rem,
    --form-floating-input-padding-t: 1.625rem,
    --form-floating-input-padding-b: .625rem,
    --form-floating-label-height: 1.5em,
    --form-floating-label-opacity: .65,
    --form-floating-label-transform: scale(.85) translateY(-.5rem) translateX(.15rem),
    --form-floating-label-disabled-color: var(--fg-3),
    --form-floating-transition-property: "opacity, transform",
    --form-floating-transition-timing: .1s ease-in-out,
    --form-floating-transition: var(--form-floating-transition-property) var(--form-floating-transition-timing),
  ),
  $form-floating-tokens
);
// scss-docs-end form-floating-tokens

@layer forms {
  .form-floating {
    @include tokens($form-floating-tokens);

    position: relative;

    > label {
      position: absolute;
      inset-block-start: 0;
      inset-inline-start: 0;
      z-index: 2;
      display: flex;
      align-items: center;
      max-width: 100%;
      height: 100%; // allow textareas
      padding: var(--form-floating-padding-y) var(--form-floating-padding-x);
      overflow: hidden;
      color: color-mix(in oklch, var(--fg-body) var(--form-floating-label-opacity), transparent);
      text-align: start;
      text-overflow: ellipsis;
      white-space: nowrap;
      pointer-events: none;
      border: var(--input-btn-border-width) solid transparent; // Required for aligning label's text with the input as it affects inner box model
      transform-origin: 0 0;
      @include transition(var(--form-floating-transition));
    }

    > .form-control,
    > .form-control-plaintext {
      height: var(--form-floating-height);
      min-height: var(--form-floating-height);
      padding: var(--form-floating-padding-y) var(--form-floating-padding-x);
      line-height: var(--form-floating-line-height);

      &::placeholder {
        color: transparent;
      }

      &:focus,
      &:not(:placeholder-shown) {
        padding-top: var(--form-floating-input-padding-t);
        padding-bottom: var(--form-floating-input-padding-b);
      }
      // Duplicated because `:-webkit-autofill` invalidates other selectors when grouped
      &:-webkit-autofill {
        padding-top: var(--form-floating-input-padding-t);
        padding-bottom: var(--form-floating-input-padding-b);
      }
    }

    > .form-control:focus,
    > .form-control:not(:placeholder-shown),
    > .form-control-plaintext {
      ~ label {
        transform: var(--form-floating-label-transform);
      }
    }

    // Duplicated because `:-webkit-autofill` invalidates other selectors when grouped
    > .form-control:-webkit-autofill {
      ~ label {
        transform: var(--form-floating-label-transform);
      }
    }
    > textarea:focus,
    > textarea:not(:placeholder-shown) {
      ~ label::after {
        position: absolute;
        inset: var(--form-floating-padding-y) calc(var(--form-floating-padding-x) * .5);
        z-index: -1;
        height: var(--form-floating-label-height);
        content: "";
        background-color: var(--control-bg);
        @include border-radius(var(--btn-input-border-radius));
      }
    }
    > textarea:disabled ~ label::after {
      background-color: var(--control-disabled-bg);
    }

    > .form-control-plaintext {
      ~ label {
        border-width: var(--control-border-width) 0; // Required to properly position label text - as explained above
      }
    }

    > :disabled ~ label,
    > .form-control:disabled ~ label { // Required for `.form-control`s because of specificity
      color: var(--form-floating-label-disabled-color);
    }
  }
}