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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
// ----------------------------------------------------------------------------
// Navigation tabs
.md-tabs {
// Must be higher than the z-index of the back-to-top button, or the button
// will overlay the navigation tabs bar when scrolling up fast.
z-index: 3;
display: block;
width: 100%;
overflow: auto;
line-height: 1.3;
color: var(--md-primary-bg-color);
background-color: var(--md-primary-fg-color);
// [print]: Hide tabs
@media print {
display: none;
}
// [tablet -]: Hide tabs
@include break-to-device(tablet) {
display: none;
}
// Navigation tabs are hidden
&[hidden] {
pointer-events: none;
}
// Navigation tabs list
&__list {
display: flex;
padding: 0;
margin: 0;
margin-inline-start: px2rem(4px);
overflow: auto;
white-space: nowrap;
list-style: none;
contain: content;
// Hack: don't show scrollbar when navigation tabs overflow, which should
// only happen in rare occasions, as adding too many top level sections is
// discouraged, since hiding content on horitontal axis doesn't lead to a
// good user experience. It's just harder to discover.
scrollbar-width: none;
// Hack: see above
&::-webkit-scrollbar {
display: none;
}
}
// Navigation tabs item
&__item {
height: px2rem(48px);
padding-inline: px2rem(12px);
// Navigation tabs link in active navigation
&--active .md-tabs__link {
color: inherit;
opacity: 1;
}
}
// Navigation tabs link - could be defined as block elements and aligned via
// line height, but this would imply more repaints when scrolling
&__link {
display: flex;
margin-top: px2rem(16px);
font-size: px2rem(14px);
outline-color: var(--md-accent-fg-color);
outline-offset: px2rem(4px);
// Hack: save a repaint when tabs are appearing on scrolling up
backface-visibility: hidden;
opacity: 0.7;
transition:
transform 400ms cubic-bezier(0.1, 0.7, 0.1, 1),
opacity 250ms;
// Navigation tabs link on focus/hover
&:is(:focus, :hover) {
color: inherit;
opacity: 1;
}
// Navigation tabs link icon
svg {
height: 1.3em;
margin-inline-end: px2rem(8px);
fill: currentcolor;
}
// Delay transitions by a small amount
@for $i from 2 through 16 {
.md-tabs__item:nth-child(#{$i}) & {
transition-delay: 20ms * ($i - 1);
}
}
// Hide tabs upon scrolling - disable transition to minimizes repaints
// while scrolling down, while scrolling up seems to be okay
.md-tabs[hidden] & {
opacity: 0;
transition:
transform 0ms 100ms,
opacity 100ms;
transform: translateY(50%);
}
}
}
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