//
// Copyright IBM Corp. 2016, 2025
//
// This source code is licensed under the Apache-2.0 license found in the
// LICENSE file in the root directory of this source tree.
//

@use '../button';
@use '../../config' as *;
@use '../../feature-flags' as *;
@use '../../breakpoint' as *;
@use '../../motion' as *;
@use '../../spacing' as *;
@use '../../theme' as *;
@use '../../type' as *;
@use '../../utilities/ai-gradient' as *;
@use '../../utilities/convert';
@use '../../utilities/component-reset';
@use '../../utilities/focus-outline' as *;
@use '../../utilities/high-contrast-mode' as *;
@use '../../utilities/update_fields_on_layer' as *;
@use '../../utilities/z-index' as *;

/// Modal styles
/// @access public
/// @group modal
@mixin modal(
  $enable-experimental-focus-wrap-without-sentinels: false,
  $enable-focus-wrap-without-sentinels: false,
  $enable-dialog-element: false,
  $enable-presence: false
) {
  .#{$prefix}--modal {
    // For modals using the native dialog element, the modal visibility is handled
    // by the Dialog styles.
    @if not(
      enabled('enable-experimental-focus-wrap-without-sentinels') or
        $enable-experimental-focus-wrap-without-sentinels or
        enabled('enable-focus-wrap-without-sentinels') or
        $enable-focus-wrap-without-sentinels or
        enabled('enable-dialog-element') or
        $enable-dialog-element
    )
    {
      position: fixed;
      z-index: z('modal');
      display: flex;
      align-items: center;
      justify-content: center;
      background-color: $overlay;
      block-size: 100vh;
      content: '';
      inline-size: 100vw;
      inset-block-start: 0;
      inset-inline-start: 0;

      &.#{$prefix}--modal--enable-presence {
        @include modal-animations($has-presence: true);
      }

      &:not(.#{$prefix}--modal--enable-presence) {
        @include modal-animations(
          $has-presence: enabled('enable-presence') or $enable-presence
        );
      }
    }

    @include update_fields_on_layer;
  }

  // For modals using the native dialog element, the modal visibility is handled
  // by the Dialog styles.
  @if not(
    enabled('enable-experimental-focus-wrap-without-sentinels') or
      $enable-experimental-focus-wrap-without-sentinels or
      enabled('enable-focus-wrap-without-sentinels') or
      $enable-focus-wrap-without-sentinels or
      enabled('enable-dialog-element') or
      $enable-dialog-element
  )
  {
    .#{$prefix}--modal--enable-presence {
      @include modal-container-animations($has-presence: true);
    }

    :not(.#{$prefix}--modal--enable-presence) {
      @include modal-container-animations(
        $has-presence: enabled('enable-presence') or $enable-presence
      );
    }
  }

  // -----------------------------
  // Modal container
  // -----------------------------
  .#{$prefix}--modal-container {
    position: fixed;
    display: grid;
    border: 1px solid $border-subtle-01;
    background-color: $layer;
    grid-template-columns: 100%;
    grid-template-rows: auto 1fr auto;
    inline-size: 100%;
    inset-block-start: 0;
    max-block-size: 100%;
    // make modal edge visible on high contrast themes (#3880)
    outline: 3px solid transparent;
    outline-offset: -3px;
    transform-origin: top center;

    @include breakpoint(md) {
      position: relative;
      inline-size: 84%;
      max-block-size: 90%;
    }

    @include breakpoint(lg) {
      inline-size: 60%;
      max-block-size: 84%;
    }

    @include breakpoint(xlg) {
      inline-size: 48%;
    }

    .#{$prefix}--modal-container-body {
      display: contents;
    }
  }

  // -----------------------------
  // Modal content
  // -----------------------------
  .#{$prefix}--modal-content {
    @include type-style('body-01');

    position: relative;
    color: $text-primary;
    font-weight: 400;
    grid-column: 1/-1;
    grid-row: 2/-2;
    overflow-y: auto;
    padding-block: $spacing-03 $spacing-09;
    // Required to accommodate focus outline's negative offset:
    // anything besides text/p spans full width, with just 16px padding
    padding-inline: $spacing-05 $spacing-05;

    &:focus {
      @include focus-outline('outline');
    }
  }

  // fluid form in modal
  .#{$prefix}--modal-content .#{$prefix}--form--fluid {
    margin-inline: -$spacing-05 - $spacing-05;
  }

  // TODO: remove .#{$prefix}--modal-content__regular-content in v11 since hasForm has been deprecated
  // text/p gets 20% right padding
  .#{$prefix}--modal-content > p,
  .#{$prefix}--modal-content__regular-content {
    @include type-style('body-01');
    // padding should take into account the left and right padding of modal container
    padding-inline-end: calc(20% - $spacing-07);
  }

  // TODO: remove .#{$prefix}--modal-content--with-form in v11 since hasForm has been deprecated\
  // anything besides text/p spans full width, with just 16px padding
  .#{$prefix}--modal-content--with-form {
    padding-inline-end: $spacing-05;
  }

  // -----------------------------
  // Modal header
  // -----------------------------
  .#{$prefix}--modal-header {
    grid-column: 1/-1;
    grid-row: 1/1;
    margin-block-end: $spacing-03;
    max-block-size: 50vh;
    overflow-y: auto;
    padding-block-start: $spacing-05;
    padding-inline: $spacing-05 $spacing-09;
  }

  .#{$prefix}--modal-header__label {
    @include component-reset.reset;
    @include type-style('label-01');

    color: $text-secondary;
    margin-block-end: $spacing-02;
  }

  .#{$prefix}--modal-header__heading {
    @include component-reset.reset;
    @include type-style('heading-03');

    color: $text-primary;
    // padding should take into account the left and right padding of modal container
    padding-inline-end: calc(20% - $spacing-09);
  }

  // -----------------------------
  // XS Modal
  // -----------------------------
  .#{$prefix}--modal-container--xs {
    //text always spans full width in xs modals
    .#{$prefix}--modal-content__regular-content {
      padding-inline-end: $spacing-05;
    }

    .#{$prefix}--modal-content > p {
      //.#{$prefix}--modal-content already has 16px padding so this doesn't need any
      padding-inline-end: 0;
    }

    @include breakpoint(md) {
      inline-size: 48%;
    }

    @include breakpoint(lg) {
      inline-size: 32%;
      max-block-size: 48%;
    }

    @include breakpoint(xlg) {
      inline-size: 24%;
    }
  }

  // -----------------------------
  // SM Modal
  // -----------------------------
  .#{$prefix}--modal-container--sm {
    //text spans full width in sm modals below 1056
    .#{$prefix}--modal-content__regular-content {
      padding-inline-end: $spacing-05;
    }

    .#{$prefix}--modal-content > p {
      //.#{$prefix}--modal-content already has 16px padding so this doesn't need any
      padding-inline-end: 0;
    }

    @include breakpoint(md) {
      inline-size: 60%;
    }

    @include breakpoint(lg) {
      inline-size: 42%;
      max-block-size: 72%;

      .#{$prefix}--modal-content > p,
      .#{$prefix}--modal-content__regular-content {
        padding-inline-end: 20%;
      }
    }

    @include breakpoint(xlg) {
      inline-size: 36%;
    }
  }

  // -----------------------------
  // LG Modal
  // -----------------------------
  .#{$prefix}--modal-container--lg {
    @include breakpoint(md) {
      inline-size: 96%;
    }

    @include breakpoint(lg) {
      inline-size: 84%;
      max-block-size: 96%;
    }

    @include breakpoint(xlg) {
      inline-size: 72%;
    }
  }

  // -----------------------------
  // Modal overflow
  // -----------------------------
  .#{$prefix}--modal-scroll-content {
    // Required to accommodate focus outline's negative offset when scrolling in Chrome
    border-block-end: 2px solid transparent;
    mask-image: linear-gradient(
        to bottom,
        $layer calc(100% - 80px),
        transparent calc(100% - 48px),
        transparent 100%
      ),
      linear-gradient(to left, $layer 0, 16px, transparent 16px),
      linear-gradient(to right, $layer 0, 2px, transparent 2px),
      linear-gradient(to top, $layer 0, 2px, transparent 2px);
  }

  .#{$prefix}--modal--slug
    .#{$prefix}--modal-content.#{$prefix}--modal-scroll-content.#{$prefix}--modal-scroll-content--no-fade,
  .#{$prefix}--modal--decorator
    .#{$prefix}--modal-content.#{$prefix}--modal-scroll-content.#{$prefix}--modal-scroll-content--no-fade,
  .#{$prefix}--modal-scroll-content.#{$prefix}--modal-scroll-content--no-fade,
  .#{$prefix}--modal-scroll-content--no-fade {
    mask-image: none;
  }

  //removing mask image in case we have dropdown in modal
  .#{$prefix}--modal-scroll-content:has(.#{$prefix}--autoalign) {
    mask-image: none;
  }

  // Required so overflow-indicator disappears at end of content
  .#{$prefix}--modal-scroll-content > *:last-child {
    margin-block-end: $spacing-06;
  }

  // -----------------------------
  // Modal footer
  // -----------------------------
  .#{$prefix}--modal-footer {
    display: flex;
    justify-content: flex-end;
    block-size: convert.to-rem(64px);
    grid-column: 1/-1;
    grid-row: -1/-1;
    margin-block-start: auto;
  }

  .#{$prefix}--modal-footer .#{$prefix}--btn {
    flex: 0 1 50%;
    align-items: baseline;
    margin: 0;
    block-size: convert.to-rem(64px);
    max-inline-size: none;
  }

  .#{$prefix}--modal-footer .#{$prefix}--btn:not(.#{$prefix}--skeleton) {
    padding-block: calc($spacing-05 - convert.to-rem(2px)) $spacing-07;
  }

  .#{$prefix}--modal-footer--three-button .#{$prefix}--btn {
    flex: 0 1 25%;
    align-items: flex-start;
  }

  // -----------------------------
  // Modal close btn
  // -----------------------------

  .#{$prefix}--modal-close-button {
    position: absolute;
    inset-block-start: 0;
    inset-inline-end: 0;
  }

  .#{$prefix}--modal-close {
    padding: convert.to-rem(12px);
    border: 2px solid transparent;
    background-color: transparent;
    block-size: 3rem;
    cursor: pointer;
    inline-size: 3rem;
    transition: background-color $duration-fast-02 motion(standard, productive);

    &:hover {
      background-color: $layer-hover;
    }

    &:focus {
      border-color: $focus;
      outline: none;
    }
  }

  .#{$prefix}--modal-close::-moz-focus-inner {
    border: 0;
  }

  .#{$prefix}--modal-close__icon {
    block-size: convert.to-rem(20px);
    fill: $icon-primary;
    inline-size: convert.to-rem(20px);
  }

  .#{$prefix}--body--with-modal-open {
    overflow: hidden;
  }

  .#{$prefix}--body--with-modal-open .#{$prefix}--modal .#{$prefix}--tooltip,
  .#{$prefix}--body--with-modal-open
    .#{$prefix}--modal
    .#{$prefix}--overflow-menu-options,
  .#{$prefix}--body--with-modal-open .#{$prefix}--overflow-menu-options {
    z-index: z('modal');
  }

  // Fluid Modal (No padding)
  .#{$prefix}--modal-container--full-width .#{$prefix}--modal-content {
    padding: 0;
    margin: 0;
  }

  // AIlabel styles
  .#{$prefix}--modal--slug.#{$prefix}--modal,
  .#{$prefix}--modal--decorator:has(.#{$prefix}--ai-label).#{$prefix}--modal {
    background-color: $ai-overlay;
  }

  .#{$prefix}--modal--slug .#{$prefix}--modal-container,
  .#{$prefix}--modal--decorator:has(.#{$prefix}--ai-label)
    .#{$prefix}--modal-container {
    @include ai-popover-gradient('default', 0, 'layer');

    border: 1px solid transparent;
    background-color: $layer;
    box-shadow:
      inset 0 -80px 70px -65px $ai-inner-shadow,
      0 24px 40px -24px $ai-drop-shadow;
  }

  .#{$prefix}--modal--slug
    .#{$prefix}--modal-container:has(.#{$prefix}--modal-footer),
  .#{$prefix}--modal--decorator:has(.#{$prefix}--ai-label)
    .#{$prefix}--modal-container:has(.#{$prefix}--modal-footer) {
    @include ai-popover-gradient('default', 64px, 'layer');

    box-shadow:
      inset 0 -80px 0 -16px $layer,
      inset 0 -160px 70px -65px $ai-inner-shadow,
      0 24px 40px -24px $ai-drop-shadow;
  }

  .#{$prefix}--modal--slug
    .#{$prefix}--modal-content.#{$prefix}--modal-scroll-content,
  .#{$prefix}--modal--decorator
    .#{$prefix}--modal-content.#{$prefix}--modal-scroll-content {
    mask-image: linear-gradient(
        to bottom,
        $layer calc(100% - 80px),
        transparent calc(100% - 48px),
        transparent 100%
      ),
      linear-gradient(to left, $layer 0, 16px, transparent 16px),
      linear-gradient(to right, $layer 0, 2px, transparent 2px),
      linear-gradient(to top, $layer 0, 2px, transparent 2px);
  }

  .#{$prefix}--modal-header
    > .#{$prefix}--modal--inner__decorator:has(
      + .#{$prefix}--modal-close-button
    )
    > *,
  .#{$prefix}--modal-header
    > .#{$prefix}--modal-close-button
    ~ .#{$prefix}--modal--inner__decorator
    > *,
  .#{$prefix}--modal--decorator
    .#{$prefix}--modal-container-body
    > .#{$prefix}--modal--inner__decorator
    > *,
  .#{$prefix}--modal-header
    > .#{$prefix}--ai-label:has(+ .#{$prefix}--modal-close-button),
  .#{$prefix}--modal-header
    > .#{$prefix}--modal-close-button
    ~ .#{$prefix}--ai-label,
  .#{$prefix}--modal--slug
    .#{$prefix}--modal-container-body
    > .#{$prefix}--ai-label,
  .#{$prefix}--modal-header
    > .#{$prefix}--slug:has(+ .#{$prefix}--modal-close-button),
  .#{$prefix}--modal-header
    > .#{$prefix}--modal-close-button
    ~ .#{$prefix}--slug,
  .#{$prefix}--modal--slug
    .#{$prefix}--modal-container-body
    > .#{$prefix}--slug {
    position: absolute;
    inset-block-start: convert.to-rem(10px);
    inset-inline-end: convert.to-rem(48px);
  }

  .#{$prefix}--modal-header
    > .#{$prefix}--modal--inner__decorator:not(:has(.#{$prefix}--ai-label))
    > * {
    inset-block-start: 1rem;
  }

  .#{$prefix}--modal-header
    > .#{$prefix}--modal--inner__decorator:has(.#{$prefix}--ai-label--revert)
    > * {
    inset-block-start: 1.475rem;
  }

  .#{$prefix}--modal--decorator
    .#{$prefix}--modal-content--overflow-indicator::before,
  .#{$prefix}--modal--decorator .#{$prefix}--modal-content--overflow-indicator {
    display: none;
  }

  // Windows HCM fix
  .#{$prefix}--modal-close:focus {
    @include high-contrast-mode('focus');
  }
}

@mixin modal-animations($has-presence: false) {
  @if not($has-presence) {
    opacity: 0;
    transition:
      opacity $duration-moderate-02 motion(exit, expressive),
      visibility 0ms linear $duration-moderate-02;
    visibility: hidden;

    &.is-visible {
      opacity: 1;
      transition:
        opacity $duration-moderate-02 motion(entrance, expressive),
        visibility 0ms linear;
      visibility: inherit;

      @media screen and (prefers-reduced-motion: reduce) {
        transition: none;
      }
    }
  } @else {
    animation: #{$prefix}--presence-modal__enter
      $duration-moderate-02
      motion(entrance, expressive)
      forwards;

    @media screen and (prefers-reduced-motion: reduce) {
      animation: none;
    }

    &[data-exiting] {
      animation: #{$prefix}--presence-modal__exit
        $duration-moderate-02
        motion(exit, expressive)
        forwards;

      @media screen and (prefers-reduced-motion: reduce) {
        animation: none;
      }
    }

    @keyframes #{$prefix}--presence-modal__enter {
      from {
        opacity: 0;
      }

      to {
        opacity: 1;
      }
    }

    @keyframes #{$prefix}--presence-modal__exit {
      from {
        opacity: 1;
      }

      to {
        opacity: 0;
      }
    }
  }
}

@mixin modal-container-animations($has-presence: false) {
  @if not($has-presence) {
    &.is-visible .#{$prefix}--modal-container {
      transform: translate3d(0, 0, 0);
      transition: transform $duration-moderate-02 motion(entrance, expressive);
    }

    .#{$prefix}--modal-container {
      transform: translate3d(0, -24px, 0);
      transition: transform $duration-moderate-02 motion(exit, expressive);
    }
  } @else {
    &[data-exiting] .#{$prefix}--modal-container {
      animation: #{$prefix}--presence-modal-container__exit
        $duration-moderate-02
        motion(exit, expressive)
        forwards;

      @media screen and (prefers-reduced-motion: reduce) {
        animation: none;
      }
    }

    .#{$prefix}--modal-container {
      animation: #{$prefix}--presence-modal-container__enter
        $duration-moderate-02
        motion(entrance, expressive)
        forwards;

      @media screen and (prefers-reduced-motion: reduce) {
        animation: none;
      }
    }

    @keyframes #{$prefix}--presence-modal-container__enter {
      from {
        transform: translate3d(0, -24px, 0);
      }

      to {
        transform: translate3d(0, 0, 0);
      }
    }

    @keyframes #{$prefix}--presence-modal-container__exit {
      from {
        transform: translate3d(0, 0, 0);
      }

      to {
        transform: translate3d(0, -24px, 0);
      }
    }
  }
}