/*
Theme Name: Zwaag Lab 2026
Theme URI: https://zwaaglab.spinozacentre.nl
Author: Spinoza Centre for Neuroimaging
Description: Document-style block theme for the Zwaag Lab, Wietske van der Zwaag's 7T MRI research group at the Spinoza Centre for Neuroimaging: a left sidebar with the page tree, breadcrumbs, a narrow reading column, an "On this page" list on long pages, lists instead of cards. Tokens live in theme.json; this file holds the theme header and the layout rules JSON cannot express. Self-hosted fonts only.
Version: 0.1.5
Requires at least: 6.6
Tested up to: 6.8
Requires PHP: 8.1
License: GPL-2.0-or-later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: zwaaglab-2026
*/

:root {
	--zl-rule: var(--wp--preset--color--rule, #dee2e6);
	--zl-radius: 0.375rem;
}

body {
	overflow-wrap: break-word;
	-webkit-font-smoothing: antialiased;
}
p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; }

/* ------------------------------------------------------------------
   1. Quality floor
   ------------------------------------------------------------------ */
:where(a, button, summary, .wp-block-button__link):focus-visible {
	outline: 3px solid var(--wp--preset--color--link);
	outline-offset: 2px;
	border-radius: 2px;
}
a { text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
html { scroll-behavior: smooth; }
:where(h2, h3, section)[id], a[id] { scroll-margin-top: 1.25rem; }
@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	*, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

.wp-block-button.is-style-outline > .wp-block-button__link:not(.has-background) { background-color: transparent; }
.wp-block-button.is-style-outline > .wp-block-button__link:not(.has-text-color) {
	color: var(--wp--preset--color--primary);
	border-color: var(--wp--preset--color--primary);
}
.wp-block-button.is-style-outline > .wp-block-button__link:not(.has-background):hover {
	background: var(--wp--preset--color--primary);
	color: #fff;
}

/* ------------------------------------------------------------------
   2. Shell: sidebar + main column
   ------------------------------------------------------------------ */
.wp-block-columns.zl-shell {
	gap: 0;
	margin: 0 !important;
	min-height: 100vh;
	align-items: stretch !important;
}
/* Mint panel: 10 % of the link teal over white. Text on it: body 13.48:1,
   navy 9.60:1, muted 4.77:1, teal link 4.57:1, deep teal 6.70:1 */
.zl-sidebar {
	background: var(--wp--preset--color--mint);
	border-right: 1px solid var(--wp--preset--color--mint-edge);
}
.zl-sidebar-part {
	position: sticky;
	top: 0;
	max-height: 100vh;
	overflow-y: auto;
	padding: 1.75rem 1.25rem 2rem 1.5rem;
}
.zl-sidebar-inner > * + * { margin-block-start: 0; }

.zl-brand { margin: 0; }
.zl-brand a {
	display: inline-flex;
	align-items: center;
	gap: 0.55rem;
}
.zl-brand a::before {
	content: "";
	flex: none;
	width: 2.6rem;
	height: 2.6rem;
	background: var(--wp--preset--color--primary);
	-webkit-mask: url("assets/art/cerebellum-section-small.svg") center / contain no-repeat;
	mask: url("assets/art/cerebellum-section-small.svg") center / contain no-repeat;
}
.zl-tagline {
	margin: 0.4rem 0 1.5rem;
	font-size: 0.9375rem;
	line-height: 1.45;
	color: var(--wp--preset--color--muted);
}
.zl-sidebar .zl-brand a { color: var(--wp--preset--color--primary); }
.zl-sidebar .zl-brand a:hover { color: var(--wp--preset--color--link-hover); }

/* The page tree: plain nested links, always expanded */
.zl-sidenav .wp-block-navigation__container { gap: 0.1rem; align-items: stretch; }
.zl-sidenav .wp-block-navigation-item { width: 100%; }
.zl-sidenav .wp-block-navigation-item__content { display: block; padding: 0.3rem 0; }
.zl-sidenav .wp-block-navigation-item__content { border-radius: 0.3rem; }
.zl-sidenav .wp-block-navigation-item__content:hover { color: var(--wp--preset--color--link-hover); }
/* Active page: navy on a deeper mint pill (8.08:1); its section parent in deep teal (6.70:1 on mint) */
.zl-sidenav .current-menu-item > .wp-block-navigation-item__content {
	color: var(--wp--preset--color--primary);
	background: var(--wp--preset--color--mint-active);
	font-weight: 600;
	margin-left: -0.5rem;
	padding-left: 0.5rem !important;
	padding-right: 0.5rem;
}
.zl-sidenav .current-menu-ancestor > .wp-block-navigation-item__content {
	color: var(--wp--preset--color--link-hover);
	font-weight: 600;
}
/* Hamburger overlay on phones gets the same mint panel */
.zl-sidenav .wp-block-navigation__responsive-container.is-menu-open {
	background-color: var(--wp--preset--color--mint) !important;
	color: var(--wp--preset--color--contrast) !important;
}
.zl-sidenav .wp-block-navigation__responsive-container-open,
.zl-sidenav .wp-block-navigation__responsive-container-close { color: var(--wp--preset--color--primary); }
.zl-sidenav .has-child { flex-direction: column; align-items: flex-start; }
.zl-sidenav .wp-block-navigation__submenu-icon { display: none !important; }
.zl-sidenav .has-child .wp-block-navigation__submenu-container {
	position: static !important;
	visibility: visible !important;
	opacity: 1 !important;
	width: auto !important;
	height: auto !important;
	min-width: 0 !important;
	overflow: visible !important;
	border: 0 !important;
	background: transparent !important;
	padding: 0 0 0.35rem 0.9rem !important;
	margin: 0 !important;
	border-left: 1px solid var(--wp--preset--color--mint-edge) !important;
}
.zl-sidenav .wp-block-navigation__submenu-container .wp-block-navigation-item__content {
	padding: 0.18rem 0 0.18rem 0.5rem;
	font-size: 0.9375rem;
	color: var(--wp--preset--color--muted);
}
.zl-sidenav .wp-block-navigation__submenu-container .wp-block-navigation-item__content:hover {
	color: var(--wp--preset--color--link-hover);
}

.zl-main-col {
	padding: 1.75rem clamp(16px, 4vw, 3.5rem) 0;
	min-width: 0;
}

@media (max-width: 781px) {
	.zl-sidebar { border-right: 0; border-bottom: 1px solid var(--wp--preset--color--mint-edge); }
	.zl-sidebar-part { position: static; max-height: none; padding: 1rem 16px; }
	.zl-sidebar-inner {
		display: flex;
		flex-wrap: wrap;
		align-items: center;
		justify-content: space-between;
		gap: 0.75rem;
	}
	.zl-tagline { display: none; }
	/* Between 600 and 781 px the menu stays visible: a single wrapped row, sub-items hidden */
	.zl-sidenav .wp-block-navigation__container { flex-direction: row !important; flex-wrap: wrap; gap: 0.25rem 1.1rem; }
	.zl-sidenav .wp-block-navigation-item { width: auto; }
	.zl-sidenav .wp-block-navigation__responsive-container:not(.is-menu-open) .wp-block-navigation__submenu-container { display: none !important; }
	.zl-main-col { padding-top: 1.25rem; }
}

/* ------------------------------------------------------------------
   3. Breadcrumb, titles, headings
   ------------------------------------------------------------------ */
.zl-breadcrumb {
	gap: 0.4rem !important;
	font-size: 0.9375rem;
	color: var(--wp--preset--color--muted);
	margin-bottom: 0.5rem;
}
.zl-breadcrumb .zl-crumb { margin: 0; }
.zl-breadcrumb .zl-crumb:first-child::after {
	content: "/";
	margin-left: 0.4rem;
	color: var(--wp--preset--color--muted);
}
.zl-breadcrumb .wp-block-post-title.zl-crumb-current {
	font-family: var(--wp--preset--font-family--body);
	font-size: 0.9375rem;
	font-weight: 400;
	letter-spacing: 0;
	line-height: inherit;
	color: var(--wp--preset--color--muted);
}
.zl-main > .wp-block-post-title { margin-top: 0; margin-bottom: 1.5rem; }

.zl-main h2 {
	border-bottom: 1px solid var(--zl-rule);
	padding-bottom: 0.5rem;
	margin-top: 2.5rem;
	clear: both;
}
.zl-main h3 { margin-top: 1.75rem; }

.zl-lede {
	font-size: var(--wp--preset--font-size--large);
	line-height: 1.55;
}

/* ------------------------------------------------------------------
   4. Images
   ------------------------------------------------------------------ */
.zl-photo img { display: block; width: 100%; height: auto; border-radius: var(--zl-radius); object-position: 50% 30%; }
.zl-portrait img { display: block; width: 100%; height: auto; border-radius: var(--zl-radius); }
.wp-block-image.alignright.zl-portrait { width: 14rem; margin: 0.35rem 0 1rem 1.5rem; }
.wp-block-image.alignright.zl-portrait-small { width: 11rem; }
.wp-block-image.alignright.zl-figure { width: 11.5rem; margin: 0.3rem 0 1rem 1.5rem; }
.zl-figure img { display: block; width: 100%; height: auto; border-radius: 4px; }
@media (max-width: 599px) {
	.wp-block-image.alignright.zl-portrait,
	.wp-block-image.alignright.zl-figure { float: none; width: 10rem; margin: 0 0 1rem; }
}

/* ------------------------------------------------------------------
   5. Home
   ------------------------------------------------------------------ */
.zl-home-mark {
	/* the traced pen drawing needs room: at 7.5rem its hairlines went faint */
	width: 15rem;
	height: 15rem;
	background: var(--wp--preset--color--primary);
	-webkit-mask: url("assets/art/cerebellum-section.svg") center / contain no-repeat;
	mask: url("assets/art/cerebellum-section.svg") center / contain no-repeat;
	margin-bottom: 0.75rem;
}
.zl-home-title { margin-top: 0; }
.zl-list-intro { margin-bottom: 0.4rem; clear: both; }
.zl-learn-more li, .zl-highlights-list li { margin-top: 0.4rem; }
.zl-learn-more ul { margin-top: 0.3rem; }
.zl-highlights-list strong { color: var(--wp--preset--color--primary); margin-right: 0.35em; }

/* ------------------------------------------------------------------
   6. Research: text column plus "On this page"
   ------------------------------------------------------------------ */
.wp-block-columns.zl-with-toc { gap: 3rem; margin-top: 1.5rem; }
.zl-doc { min-width: 0; max-width: 720px; }
.zl-doc > .zl-doc-section:first-child h2 { margin-top: 0; }
.zl-toc {
	order: 2;
	position: sticky;
	top: 1.5rem;
	align-self: flex-start;
	font-size: 0.9375rem;
	border-left: 1px solid var(--zl-rule);
	padding-left: 1rem;
}
.zl-toc > * { margin: 0; }
.zl-toc-title { font-weight: 600; color: var(--wp--preset--color--contrast); }
.zl-toc-list { list-style: none; padding: 0; margin-top: 0.4rem !important; }
.zl-toc-list li { margin: 0.25rem 0; }
.zl-toc-list a { text-decoration: none; color: var(--wp--preset--color--muted); }
.zl-toc-list a:hover { color: var(--wp--preset--color--link); text-decoration: underline; }
@media (max-width: 781px) {
	.zl-toc {
		order: 0;
		position: static;
		border-left: 0;
		padding: 0.9rem 1rem;
		background: var(--wp--preset--color--surface);
		border-radius: var(--zl-radius);
	}
}

.zl-note {
	clear: both;
	font-size: 1rem;
	background: var(--wp--preset--color--surface);
	border-left: 3px solid var(--wp--preset--color--primary);
	padding: 0.65rem 0.9rem;
	border-radius: 0 var(--zl-radius) var(--zl-radius) 0;
}
.zl-note-head { margin-bottom: 0 !important; border-radius: 0 var(--zl-radius) 0 0; }
.zl-note-list {
	margin-top: 0 !important;
	font-size: 1rem;
	background: var(--wp--preset--color--surface);
	border-left: 3px solid var(--wp--preset--color--primary);
	padding: 0 0.9rem 0.75rem 2.1rem;
	border-radius: 0 0 var(--zl-radius) 0;
}
.zl-note-list li + li { margin-top: 0.3rem; }

.zl-ref-list { list-style: none; padding: 0; font-size: 1rem; line-height: 1.55; }
.zl-ref-list li { padding-block: 0.55rem; border-top: 1px solid var(--zl-rule); }
.zl-ref-list a[id] { color: inherit; text-decoration: none; font-weight: 500; }
.zl-ref-list li:has(> a:target) { background: #fff8e1; box-shadow: 0 0 0 0.5rem #fff8e1; }

/* ------------------------------------------------------------------
   7. Group
   ------------------------------------------------------------------ */
.zl-people-list { padding-left: 1.2rem; }
.zl-people-list li + li { margin-top: 0.3rem; }
.zl-photo-grid { gap: 1.25rem; }
.zl-photo-grid .zl-photo { margin: 0; }
.zl-hint { color: var(--wp--preset--color--muted); font-size: 1rem; }
.zl-alumni-year { border-top: 1px solid var(--zl-rule); margin-block-start: 0 !important; }
.zl-alumni-year:last-of-type { border-bottom: 1px solid var(--zl-rule); }
.zl-alumni-year summary {
	display: flex;
	justify-content: space-between;
	padding-block: 0.65rem;
	cursor: pointer;
	list-style: none;
	font-weight: 600;
	color: var(--wp--preset--color--primary);
}
.zl-alumni-year summary::-webkit-details-marker { display: none; }
.zl-alumni-year summary::after { content: "+"; font-weight: 400; color: var(--wp--preset--color--link); }
.zl-alumni-year[open] summary::after { content: "\2212"; }
.zl-alumni-year ul { margin: 0 0 1rem; padding-left: 1.2rem; }
.zl-alumni-year li + li { margin-top: 0.25rem; }

/* ------------------------------------------------------------------
   8. Publications
   ------------------------------------------------------------------ */
.zl-profiles-box {
	border: 1px solid var(--zl-rule);
	background: var(--wp--preset--color--surface);
	border-radius: var(--zl-radius);
	padding: 1.1rem 1.25rem;
}
.zl-profiles-box > p { margin-top: 0; }
.zl-profiles { gap: 0.6rem; }
.zl-pub { display: flow-root; padding-block: 1.1rem; border-top: 1px solid var(--zl-rule); }
.zl-pub > * { margin-block: 0; }
.zl-pub > * + * { margin-block-start: 0.3rem; }
.zl-pub-label { font-size: 0.9375rem; color: var(--wp--preset--color--muted); }
.zl-main .zl-pub-title { font-size: 1.125rem; font-weight: 600; line-height: 1.4; margin-top: 0.2rem; border: 0; padding: 0; }
.zl-pub-authors { font-size: 1rem; line-height: 1.5; }
.zl-pub-links { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-block-start: 0.55rem !important; }
.zl-pub-links a {
	font-size: 0.875rem;
	padding: 0.05em 0.5em;
	border: 1px solid var(--zl-rule);
	border-radius: 0.25rem;
	text-decoration: none;
}
.zl-pub-links a:hover { border-color: var(--wp--preset--color--link); }
.zl-pub-cover { margin: 0 0 0.75rem 1.25rem !important; }
.zl-pub-cover img { width: 5.5rem; height: auto; border-radius: 3px; display: block; }

/* ------------------------------------------------------------------
   9. Awards, contact, code and data
   ------------------------------------------------------------------ */
.zl-jump { display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; font-size: 0.9375rem; }
.zl-award-year { display: flow-root; }
.zl-main .zl-award-year-head { margin-top: 2rem; }
.wp-block-image.alignright.zl-thumb { margin: 0.25rem 0 1rem 1.5rem; }
.zl-thumb img { width: 10.5rem; max-width: 100%; height: auto; border-radius: 4px; display: block; }
.zl-award-list { padding-left: 1.2rem; }
.zl-award-list li + li { margin-top: 0.5rem; }
@media (max-width: 599px) {
	.wp-block-image.alignright.zl-thumb { float: none; margin: 0 0 1rem; }
	.zl-pub-cover img { width: 4.5rem; }
}
.zl-contact-list { padding-left: 1.2rem; }

.zl-todo-note { border-left: 4px solid #b7791f; border-radius: 4px; padding: 1rem 1.25rem; }
.zl-todo-note p { margin: 0; }
.zl-od-list { list-style: none; padding: 0; }
.zl-od-list li { padding-block: 0.6rem; border-top: 1px solid var(--zl-rule); }
.zl-od-list li a { font-weight: 600; }

/* ------------------------------------------------------------------
   10. Footer: one line
   ------------------------------------------------------------------ */
.zl-footer {
	clear: both;
	max-width: 1080px;
	margin-top: 4rem;
	padding: 1rem 0 2rem;
	border-top: 1px solid var(--zl-rule);
	font-size: 0.9375rem;
	color: var(--wp--preset--color--muted);
	gap: 0.5rem 1.5rem !important;
}
.zl-footer p { margin: 0; }
.zl-updated { gap: 0.35em !important; }
.zl-updated .wp-block-post-date { font-size: inherit; }