@import '../../variables.less';
@import '../../mixins.less';

@selector-nojs-collapsed-toc-open: ~'#vector-toc-collapsed-checkbox:checked';

// TOC dropdown styles
#vector-toc-collapsed-button,
.vector-sticky-header-toc,
.vector-page-titlebar-toc {
	display: none;
	margin-right: 8px;
}

// TOC styles when unpinned
.mixin-toc-unpinned() {
	display: block;

	.vector-dropdown-content {
		// Override default dropdown max width
		max-width: none;
	}

	// Shared unpinned TOC styles, applies across all unpinned cases (page titlebar, sticky header, floating)
	.vector-toc {
		// T316056 Remove TOC menu fixed width and apply min/max-width
		width: max-content;
		min-width: 200px;
		// Collapsed TOC should be smaller than 85% of the content container (51em) and 75vw
		max-width: ~'min( 0.85 * @{max-width-content-container}, 75vw )'; // min( 51em, 75vw )

		// Adjust TOC spacing when unpinned
		.vector-pinnable-header {
			padding-left: @padding-horizontal-dropdown-menu-item + @spacing-subsection-toggle;
		}

		.vector-toc-contents {
			padding-right: @padding-horizontal-dropdown-menu-item;
			padding-left: @padding-horizontal-dropdown-menu-item + @spacing-subsection-toggle;
		}
	}
}

// TOC styles when below page title
.mixin-toc-below-page-title {
	position: fixed;
	top: 12px;
	left: 12px;
	margin: 0;
	z-index: @z-index-dropdown;
}

&.client-js {
	@media ( max-width: @max-width-tablet ) {
		//
		// TOC in page titlebar on narrow screens
		//
		.vector-page-titlebar-toc {
			.mixin-toc-unpinned();
		}

		//
		// TOC in page titlebar on narrow screens below page title
		//
		.vector-below-page-title .vector-page-titlebar-toc {
			.mixin-toc-below-page-title();
		}
	}

	@media ( min-width: @min-width-desktop ) {
		//
		// TOC in page titlebar
		//
		&.vector-feature-toc-pinned-clientpref-0 body:not( .vector-sticky-header-visible ) {
			.vector-page-titlebar-toc {
				.mixin-toc-unpinned();
			}
		}

		//
		// TOC in page titlebar below page title
		//
		&.vector-feature-toc-pinned-clientpref-0 body:not( .vector-sticky-header-visible ).vector-below-page-title {
			.vector-page-titlebar-toc {
				.mixin-toc-below-page-title();
			}
		}

		//
		// TOC in sticky header
		//
		&.vector-feature-toc-pinned-clientpref-0 .vector-sticky-header-visible {
			.vector-sticky-header-toc {
				.mixin-toc-unpinned();
			}
		}
	}
}

&.client-nojs {
	//
	// No-JS TOC in page titlebar
	//
	&.vector-feature-toc-pinned-clientpref-0 {
		.vector-page-titlebar-toc {
			.mixin-toc-unpinned();
		}
	}

	//
	// No-JS TOC in page titlebar on narrow screens for anon users
	//
	@media ( max-width: @max-width-tablet ) {
		// Make the TOC appear in the page titlebar on small viewports
		// even when the TOC location in the DOM is actually in the sidebar
		// This case only happens for no-js anon users.
		&.vector-feature-toc-pinned-clientpref-1 {
			#vector-toc-collapsed-button {
				display: block;
			}

			#vector-toc-pinned-container {
				// Override TOC container's sticky positioning
				position: relative;
				.mixin-toc-unpinned();
			}

			.vector-toc {
				display: none;
				position: absolute;
				top: 36px; // TOC button height
				// FIXME: Don't use a magic number. This used to be tied to the private variable in core
				// @icon-padding-md so perhaps this needs to make use of the flush classes?
				left: -12px;
				margin-top: @padding-top-content; // Account for padding-top from .mw-body
				// FIXME: Collapsed TOC styles are not consistent with other vector dropdowns
				border: @border-width-base @border-style-base @border-color-base;
				z-index: @z-index-dropdown;

				.vector-pinnable-header,
				.vector-toc-contents {
					padding-left: @padding-horizontal-dropdown-menu-item;
				}
			}

			@{selector-nojs-collapsed-toc-open} ~ .mw-table-of-contents-container .vector-toc {
				// Hide the TOC when the button is not checked
				display: block;
			}
		}
	}
}