mkdocs-material/src/assets/stylesheets/main/extensions/markdown/_admonition.scss

////
/// Copyright (c) 2016-2021 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
////

@use "sass:color";
@use "sass:list";

// ----------------------------------------------------------------------------
// Variables
// ----------------------------------------------------------------------------

/// Admonition flavours
$admonitions: (
  note:                       pencil $clr-blue-a200,
  abstract summary tldr:      clipboard-text $clr-light-blue-a400,
  info todo:                  information $clr-cyan-a700,
  tip hint important:         fire $clr-teal-a700,
  success check done:         check-bold $clr-green-a700,
  question help faq:          help-circle $clr-light-green-a700,
  warning caution attention:  alert $clr-orange-a400,
  failure fail missing:       close-thick $clr-red-a200,
  danger error:               lightning-bolt $clr-red-a400,
  bug:                        bug $clr-pink-a400,
  example:                    format-list-numbered $clr-deep-purple-a200,
  quote cite:                 format-quote-close $clr-grey
) !default;

// ----------------------------------------------------------------------------
// Rules: layout
// ----------------------------------------------------------------------------

// Admonition variables
:root {
  @each $names, $props in $admonitions {
    --md-admonition-icon--#{nth($names, 1)}:
      svg-load("material/#{nth($props, 1)}.svg");
  }
}

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

// Scoped in typesetted content to match specificity of regular content
.md-typeset {

  // Admonition - note that all styles also apply to details tags, which are
  // rendered as collapsible admonitions with summary elements as titles.
  :is(.admonition, details) {
    display: flow-root;
    margin: px2em(20px, 12.8px) 0;
    padding: 0 px2rem(12px);
    color: var(--md-admonition-fg-color);
    font-size: px2rem(12.8px);
    page-break-inside: avoid;
    background-color: var(--md-admonition-bg-color);
    border: 0 solid $clr-blue-a200;
    border-inline-start-width: px2rem(4px);
    border-radius: px2rem(2px);
    box-shadow: var(--md-shadow-z1);

    // [print]: Omit shadow as it may lead to rendering errors
    @media print {
      box-shadow: none;
    }

    // Hack: Chrome exhibits a weird issue where it will set nested elements to
    // content-box. Doesn't happen in other browsers, so looks like a bug.
    > * {
      box-sizing: border-box;
    }

    // Adjust vertical spacing for nested admonitions
    :is(.admonition, details) {
      margin-top: 1em;
      margin-bottom: 1em;
    }

    // Adjust spacing for contained table wrappers
    .md-typeset__scrollwrap {
      margin: 1em px2rem(-12px);
    }

    // Adjust spacing for contained tables
    .md-typeset__table {
      padding: 0 px2rem(12px);
    }

    // Adjust spacing for single-child tabbed block container
    > .tabbed-set:only-child {
      margin-top: 0;
    }

    // Adjust spacing on last child
    html & > :last-child {
      margin-bottom: px2rem(12px);
    }
  }

  // Admonition title
  :is(.admonition-title, summary) {
    position: relative;
    margin-block: 0;
    margin-inline: px2rem(-16px) px2rem(-12px);
    padding-block: px2rem(8px);
    padding-inline: px2rem(40px) px2rem(12px);
    font-weight: 700;
    background-color: color.adjust($clr-blue-a200, $alpha: -0.9);
    border: 0 solid $clr-blue-a200;
    border-inline-start-width: px2rem(4px);
    border-start-start-radius: px2rem(2px);

    // Adjust spacing for title-only admonitions
    html &:last-child {
      margin-bottom: 0;
    }

    // Admonition icon
    &::before {
      position: absolute;
      top: px2em(10px);
      inset-inline-start: px2rem(12px);
      width: px2rem(20px);
      height: px2rem(20px);
      background-color: $clr-blue-a200;
      mask-image: var(--md-admonition-icon--note);
      mask-repeat: no-repeat;
      mask-size: contain;
      content: "";
    }
  }
}

// ----------------------------------------------------------------------------
// Rules: flavours
// ----------------------------------------------------------------------------

@each $names, $props in $admonitions {
  $name: list.nth($names, 1);
  $tint: list.nth($props, 2);

  // Admonition flavour selectors
  $flavours: ();
  @each $name in $names {
    $flavours: list.join($flavours, ".#{$name}", $separator: comma);
  }

  // Admonition flavour
  .md-typeset :is(.admonition, details):is(#{$flavours}) {
    border-color: $tint;
  }

  // Admonition flavour title
  .md-typeset :is(#{$flavours}) > :is(.admonition-title, summary) {
    background-color: color.adjust($tint, $alpha: -0.9);
    border-color: $tint;

    // Admonition icon
    &::before {
      background-color: $tint;
      mask-image: var(--md-admonition-icon--#{$name});
      mask-repeat: no-repeat;
      mask-size: contain;
    }
  }
}