////
/// Copyright (c) 2016-2025 Martin Donath <martin.donath@squidfunk.com>
///
/// Permission is hereby granted, free of charge, to any person obtaining a
/// copy of this software and associated documentation files (the "Software"),
/// to deal in the Software without restriction, including without limitation
/// the rights to use, copy, modify, merge, publish, distribute, sublicense,
/// and/or sell copies of the Software, and to permit persons to whom the
/// Software is furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
/// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
/// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
/// DEALINGS
////

// ----------------------------------------------------------------------------
// Rules
// ----------------------------------------------------------------------------

// Code block button variables
:root {
  --md-code-select-icon: svg-load("material/focus-field.svg");
  --md-code-copy-icon: svg-load("material/content-copy.svg");
  // --md-code-wrap-icon: svg-load("material/wrap-disabled.svg");
}

// ----------------------------------------------------------------------------

// Code blocks
.md-code {

  // Code block content - when line spans are enabled, we can opt into using
  // grid-based rendering, which makes highlighted lines stretch.
  .md-typeset &__content {
    display: grid;
  }

  // Code block navigation
  &__nav {
    position: absolute;
    top: px2em(4px);
    right: px2em(4px);
    z-index: 1;
    display: flex;
    gap: px2rem(4px);
    padding: px2rem(4px);
    background-color: var(--md-code-bg-color--lighter);
    border-radius: px2rem(2px);
    transition: background-color 250ms;

    // Darken color on code block hover
    :hover > & {
      background-color: var(--md-code-bg-color--light);
    }
  }

  // Code block button
  &__button {
    display: block;
    width: px2em(24px);
    height: px2em(24px);
    color: var(--md-default-fg-color--lightest);
    cursor: pointer;
    outline-color: var(--md-accent-fg-color);
    outline-offset: px2rem(2px);
    transition: color 250ms;

    // Darken color on code block hover
    :hover > * > & {
      color: var(--md-default-fg-color--light);
    }

    // Button on focus/hover
    &:is(.focus-visible, :hover) {
      color: var(--md-accent-fg-color);
    }

    // Active button
    &--active {
      // @todo: !important sucks - find a better way to implement this
      color: var(--md-default-fg-color) !important; // stylelint-disable-line
    }

    // Button icon - the width and height are defined in `em`, so the size is
    // automatically adjusted for nested code blocks (e.g. in admonitions)
    &::after {
      display: block;
      width: px2em(18px);
      height: px2em(18px);
      margin: 0 auto;
      content: "";
      background-color: currentcolor;
      mask-repeat: no-repeat;
      mask-position: center;
      mask-size: contain;
    }

    // Code block button icon for selection
    &[data-md-type="select"]::after {
      mask-image: var(--md-code-select-icon);
    }

    // Code block button icon for copying
    &[data-md-type="copy"]::after {
      mask-image: var(--md-code-copy-icon);
    }
  }
}
