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////
/// Copyright (c) 2016-2023 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
// ----------------------------------------------------------------------------
// Footnotes variables
:root {
--md-footnotes-icon: svg-load("material/keyboard-return.svg");
}
// ----------------------------------------------------------------------------
// Scoped in typesetted content to match specificity of regular content
.md-typeset {
// Footnote container
.footnote {
font-size: px2rem(12.8px);
color: var(--md-default-fg-color--light);
// Footnote list - omit left indentation
> ol {
margin-inline-start: 0;
// Footnote item - footnote items can contain lists, so we need to scope
// the spacing adjustments to the top-level footnote item.
> li {
transition: color 125ms;
// Darken color on target
&:target {
color: var(--md-default-fg-color);
}
// Show backreferences on footnote focus without transition
&:focus-within .footnote-backref {
opacity: 1;
transition: none;
transform: translateX(0);
}
// Show backreferences on footnote hover/target
&:is(:hover, :target) .footnote-backref {
opacity: 1;
transform: translateX(0);
}
// Adjust spacing on first child
> :first-child {
margin-top: 0;
}
}
}
}
// Footnote reference
.footnote-ref {
font-size: px2em(12px, 16px);
font-weight: 700;
// Hack: increase specificity to override default
html & {
outline-offset: px2rem(2px);
}
}
// Show outline for all devices
[id^="fnref:"]:target > .footnote-ref {
outline: auto;
}
// Footnote backreference
.footnote-backref {
display: inline-block;
// Hack: omit Unicode arrow for replacement with icon
font-size: 0;
color: var(--md-typeset-a-color);
vertical-align: text-bottom;
opacity: 0;
transition:
color 250ms,
transform 250ms 250ms,
opacity 125ms 250ms;
transform: translateX(px2rem(5px));
// [print]: Show footnote backreferences
@media print {
color: var(--md-typeset-a-color);
opacity: 1;
transform: translateX(0);
}
// Adjust for right-to-left languages
[dir="rtl"] & {
transform: translateX(px2rem(-5px));
}
// Adjust color on hover
&:hover {
color: var(--md-accent-fg-color);
}
// Footnote backreference icon
&::before {
display: inline-block;
width: px2rem(16px);
height: px2rem(16px);
content: "";
background-color: currentcolor;
mask-image: var(--md-footnotes-icon);
mask-position: center;
mask-repeat: no-repeat;
mask-size: contain;
// Adjust for right-to-left languages
[dir="rtl"] & {
// Flip icon vertically
svg {
transform: scaleX(-1);
}
}
}
}
}
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