/* ------ basis css */
.page-row {
  display: flex;
  gap: var(--spacing-md);
}
.page-row > div {
	flex: 1;
}
.page-row ul {
	margin-left: var(--spacing-md);
}

/* Responsive page layout */
@media (max-width: 768px) {
	.page-row {
		flex-direction: column;
		gap: var(--spacing-sm, 1rem);
	}
	
	.page-row > div {
		flex: none;
		width: 100%;
	}
}

a:hover {
	color: var(--color-accent, #0284c7);
}

.button {
	display: inline-block;
	padding: 15px 30px;
	background-color: #1e3a8a;
	color: white;
	text-decoration: none;
	border-radius: 5px;
	font-weight: bold;
	font-size: 1.1rem;
	transition: background-color 0.3s ease;
}

.button:hover {
	background-color: #0284c7;
}

.callout {
	border-left: 4px solid;
	padding: 1rem;
	border-radius: 0 0.375rem 0.375rem 0;
	margin: 1rem 0;
}

.callout[data-intent="info"] {
	border-left-color: #3b82f6;
	background-color: #eff6ff;
	color: #1e3a8a;
}

.callout[data-intent="warning"] {
	border-left-color: #f59e0b;
	background-color: #fffbeb;
	color: #92400e;
}

.callout[data-intent="error"] {
	border-left-color: #ef4444;
	background-color: #fef2f2;
	color: #991b1b;
}

.callout p {
	margin-bottom: 0.5rem;
}

.callout p:last-child {
	margin-bottom: 0;
}

.callout a {
	color: inherit;
	font-weight: 600;
}

.callout a:hover {
	opacity: 0.8;
}

/* ------ element accordion css */
/* Accordion Styles */
.accordion-item {
	margin-bottom: 0;
}

.accordion-header {
	width: 100%;
	text-align: left;
	padding: 15px 20px;
	background: #f5f5f5;
	border: 1px solid #ddd;
	border-bottom: none;
	cursor: pointer;
	font-size: 1.1rem;
	font-weight: 600;
	display: flex;
	justify-content: space-between;
	align-items: center;
	transition: background-color 0.2s ease;
}

.accordion-header:hover {
	background: #e8e8e8;
}

.accordion-header:focus {
	outline: 2px solid #007cba;
	outline-offset: -2px;
}

.accordion-icon {
	transition: transform 0.3s ease;
	font-size: 1.2rem;
	font-weight: bold;
}

.accordion-content {
	display: none;
	padding: 20px;
	border: 1px solid #ddd;
	border-top: none;
	background: white;
	animation: slideDown 0.3s ease;
}

.accordion-content.show {
	display: block;
}

@keyframes slideDown {
	from {
		opacity: 0;
		max-height: 0;
		padding-top: 0;
		padding-bottom: 0;
	}
	to {
		opacity: 1;
		max-height: 1000px;
		padding-top: 20px;
		padding-bottom: 20px;
	}
}

/* Last accordion item styling */
.accordion-item:last-child .accordion-header {
	border-bottom: 1px solid #ddd;
}

.accordion-item:last-child .accordion-content {
	border-bottom: 1px solid #ddd;
}

/* ------ element hero css */
.hero {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* ------ element osm-box css */
.osm-box {
  height: 250px;
  width: 100%;
}

/* ------ layout css */
/* Palette values come from the website's stored palette map.  A key absent
   from that map renders as a Go placeholder marker, and custom properties
   accept any token sequence, so a var() fallback at the use site would not
   catch it -- `or` with the manifest default is what makes this safe.  It
   also covers sites saved before the font keys were added. */
:root {
	--background-main: #ffffff;
	--background-sidebar: #fbfbfb;
	--color-main: #242526;
	--color-secondary: #446980;
	--color-accent: #446980;
	--border-color: #e9e9e9;
	--font-header: Open Sans;
	--font-body: Open Sans;

	--max-width: 1140px;
	--sidebar-width: 290px;
	--spacing-xs: 0.5rem;
	--spacing-sm: 1rem;
	--spacing-md: 1.5rem;
	--spacing-lg: 2rem;
	--spacing-xl: 2.75rem;
	--radius-sm: 4px;
	--shadow: 0 1px 2px rgba(16, 32, 48, 0.06);
	--transition: 0.18s ease;
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

* {
	margin: 0;
	padding: 0;
}

.site-body {
	background: var(--background-sidebar);
	color: var(--color-main);
	font-family: var(--font-body), system-ui, sans-serif;
	font-size: 17px;
	line-height: 1.7;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

img {
	max-width: 100%;
	height: auto;
}

.site-wrapper {
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	max-width: var(--max-width);
	margin: 0 auto;
	background: var(--background-main);
	border-left: 1px solid var(--border-color);
	border-right: 1px solid var(--border-color);
}

.container {
	width: 100%;
	padding: 0 var(--spacing-md);
}

/* Header: masthead above, a solid menu bar beneath it
   ------------------------------------------------------------------ */

.main-header {
	background: var(--background-main);
	border-bottom: 3px solid var(--color-secondary);
}

.desktop-header-layout {
	display: grid;
	grid-template-columns: 1fr auto;
	grid-template-areas:
		"brand   info"
		"nav     nav";
	align-items: center;
	column-gap: var(--spacing-md);
	padding-top: var(--spacing-md);
}

.header-left {
	grid-area: brand;
	font-family: var(--font-header), system-ui, sans-serif;
	font-size: 1.7rem;
	font-weight: 700;
	line-height: 1.2;
	letter-spacing: -0.015em;
	color: var(--color-main);
}

.header-right {
	grid-area: info;
	text-align: right;
	font-size: 0.9rem;
	line-height: 1.5;
	color: color-mix(in srgb, var(--color-main) 72%, white);
}

.header-left a,
.header-right a,
.site-footer a {
	color: inherit;
}

.header-left p,
.header-right p,
.header-left h1,
.header-left h2,
.header-left h3 {
	margin: 0;
	font-size: inherit;
	font-weight: inherit;
	color: inherit;
}

.header-nav {
	grid-area: nav;
	margin-top: var(--spacing-md);
	background: var(--color-secondary);
	margin-left: calc(-1 * var(--spacing-md));
	margin-right: calc(-1 * var(--spacing-md));
	padding: 0 var(--spacing-md);
}

.header-nav ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
}

.header-nav li {
	position: relative;
}

.header-nav a {
	display: block;
	padding: 0.7rem var(--spacing-sm);
	color: #ffffff;
	text-decoration: none;
	font-family: var(--font-header), system-ui, sans-serif;
	font-size: 0.95rem;
	font-weight: 600;
	white-space: nowrap;
	transition: background-color var(--transition);
}

/* Top-level items darken only -- the generic a:hover further down would
   otherwise recolour the white label against the menu bar. */
.header-nav > ul > li > a:hover,
.header-nav > ul > li.active > a {
	background: color-mix(in srgb, var(--color-secondary) 78%, black);
	color: #ffffff;
}

.header-nav > ul > li.active > a {
	box-shadow: inset 0 -3px 0 var(--color-accent);
}

/* Dropdowns */
.header-nav ul ul {
	display: none;
	position: absolute;
	top: 100%;
	left: 0;
	z-index: 1000;
	min-width: 230px;
	flex-direction: column;
	background: var(--background-main);
	border: 1px solid var(--border-color);
	box-shadow: 0 8px 20px rgba(16, 32, 48, 0.12);
}

.header-nav ul ul ul {
	top: 0;
	left: 100%;
}

.header-nav li:hover > ul {
	display: flex;
}

.header-nav ul ul a {
	color: var(--color-main);
	font-weight: 500;
	font-size: 0.92rem;
	white-space: normal;
	border-left: 3px solid transparent;
}

.header-nav ul ul li + li > a {
	border-top: 1px solid var(--border-color);
}

.header-nav ul ul a:hover,
.header-nav ul ul li.active > a {
	background: var(--background-sidebar);
	border-left-color: var(--color-accent);
}

/* Body: sidebar column beside the page content
   ------------------------------------------------------------------ */

.content-wrapper {
	flex: 1;
	display: flex;
	align-items: flex-start;
	gap: var(--spacing-lg);
	padding: var(--spacing-lg) var(--spacing-md) var(--spacing-xl);
}

.sidebar {
	flex: 0 0 var(--sidebar-width);
	position: sticky;
	top: var(--spacing-md);
}

.sidebar-content {
	background: var(--background-sidebar);
	border: 1px solid var(--border-color);
	border-top: 3px solid var(--color-secondary);
	border-radius: var(--radius-sm);
	padding: var(--spacing-md);
	font-size: 0.95rem;
}

.sidebar-content h2,
.sidebar-content h3 {
	font-size: 1.05rem;
	margin-top: var(--spacing-md);
	margin-bottom: var(--spacing-xs);
}

.sidebar-content > :first-child,
.sidebar-content .page-row:first-child h2,
.sidebar-content .page-row:first-child h3 {
	margin-top: 0;
}

.sidebar-content p:last-child {
	margin-bottom: 0;
}

.main-content {
	flex: 1;
	min-width: 0;
}

.page-content .page-row + .page-row {
	margin-top: var(--spacing-lg);
}

h1, h2, h3, h4, h5, h6 {
	font-family: var(--font-header), system-ui, sans-serif;
	color: var(--color-main);
	font-weight: 700;
	line-height: 1.25;
	letter-spacing: -0.015em;
	margin-bottom: var(--spacing-sm);
}

h1 {
	font-size: 2.1rem;
	margin-bottom: var(--spacing-md);
	padding-bottom: var(--spacing-xs);
	border-bottom: 1px solid var(--border-color);
}

h2 { font-size: 1.5rem; margin-top: var(--spacing-lg); }
h3 { font-size: 1.15rem; }
h4 { font-size: 1.02rem; }

.page-row > div > :first-child {
	margin-top: 0;
}

p {
	margin-bottom: var(--spacing-sm);
	max-width: 72ch;
}

ul, ol {
	margin: 0 0 var(--spacing-sm) var(--spacing-md);
}

li {
	margin-bottom: 0.3rem;
}

/* That spacing is for prose lists only -- in the menu bar it left a strip of
   colour below the items, and it opened gaps between dropdown entries. */
.header-nav li,
.mobile-menu li {
	margin-bottom: 0;
}

a {
	color: var(--color-secondary);
	text-decoration-color: color-mix(in srgb, var(--color-secondary) 35%, transparent);
	text-underline-offset: 0.16em;
	transition: text-decoration-color var(--transition);
}

a:hover {
	color: var(--color-secondary);
	text-decoration-color: currentColor;
}

hr {
	border: none;
	border-top: 1px solid var(--border-color);
	margin: var(--spacing-lg) 0;
}

blockquote {
	margin: var(--spacing-md) 0;
	padding: var(--spacing-xs) var(--spacing-md);
	border-left: 3px solid var(--color-accent);
	color: color-mix(in srgb, var(--color-main) 72%, white);
}

/* Elements
   ------------------------------------------------------------------ */

.hero h1 {
	font-family: var(--font-header), system-ui, sans-serif;
	border-bottom: none;
	padding-bottom: 0;
	text-shadow: 0 2px 14px rgba(0, 0, 0, 0.4);
}

.box {
	height: 100%;
	background: var(--background-main);
	border: 1px solid var(--border-color);
	border-top: 3px solid var(--color-secondary);
	border-radius: var(--radius-sm);
	overflow: hidden;
	padding-bottom: var(--spacing-sm);
}

.box img {
	display: block;
	width: 100%;
	aspect-ratio: 16 / 10;
	object-fit: cover;
	margin-bottom: var(--spacing-sm);
}

.box h3,
.box h4,
.box > div {
	padding: 0 var(--spacing-sm);
}

.box h3 {
	font-size: 1.08rem;
	margin-top: var(--spacing-xs);
	margin-bottom: 0.15rem;
}

.box h4 {
	font-size: 0.85rem;
	font-weight: 600;
	color: color-mix(in srgb, var(--color-main) 62%, white);
	margin-bottom: var(--spacing-xs);
}

.box p:last-child {
	margin-bottom: 0;
}

.button {
	display: inline-block;
	padding: 0.65rem 1.35rem;
	background-color: var(--color-secondary);
	color: #ffffff;
	font-family: var(--font-header), system-ui, sans-serif;
	font-size: 1rem;
	font-weight: 600;
	text-decoration: none;
	border: none;
	border-radius: var(--radius-sm);
	cursor: pointer;
	transition: background-color var(--transition);
}

.button:hover {
	background-color: color-mix(in srgb, var(--color-secondary) 84%, black);
	color: #ffffff;
}

.accordion-item + .accordion-item {
	margin-top: 0.35rem;
}

.accordion-header {
	background: var(--background-sidebar);
	border: 1px solid var(--border-color);
	border-radius: var(--radius-sm);
	font-family: var(--font-header), system-ui, sans-serif;
	font-size: 1rem;
	font-weight: 600;
	color: var(--color-main);
	padding: 0.75rem var(--spacing-sm);
	transition: background-color var(--transition);
}

.accordion-header:hover {
	background: color-mix(in srgb, var(--background-sidebar) 88%, black);
}

.accordion-header:focus-visible {
	outline: 2px solid var(--color-secondary);
	outline-offset: 2px;
}

.accordion-content {
	border: 1px solid var(--border-color);
	border-top: none;
	background: var(--background-main);
	padding: var(--spacing-sm);
}

.accordion-item:last-child .accordion-header,
.accordion-item:last-child .accordion-content {
	border-bottom: 1px solid var(--border-color);
}

.osm-box {
	border: 1px solid var(--border-color);
	border-radius: var(--radius-sm);
}

table {
	width: 100%;
	border-collapse: collapse;
	margin: var(--spacing-md) 0;
	font-size: 0.96rem;
	border: 1px solid var(--border-color);
}

th, td {
	padding: 0.6rem var(--spacing-sm);
	text-align: left;
	border-bottom: 1px solid var(--border-color);
}

th {
	background: var(--color-secondary);
	color: #ffffff;
	font-family: var(--font-header), system-ui, sans-serif;
	font-weight: 600;
}

tbody tr:nth-child(even) {
	background: var(--background-sidebar);
}

tbody tr:last-child td {
	border-bottom: none;
}

/* Footer
   ------------------------------------------------------------------ */

.site-footer {
	margin-top: auto;
	background: var(--color-main);
	color: #ffffff;
}

.site-footer .container {
	padding-top: var(--spacing-lg);
	padding-bottom: var(--spacing-lg);
	text-align: center;
	font-size: 0.9rem;
}

.site-footer p {
	margin: 0 auto 0.3rem;
	max-width: none;
}

.site-footer h1,
.site-footer h2,
.site-footer h3 {
	color: #ffffff;
	font-size: 1.05rem;
	border-bottom: none;
	padding-bottom: 0;
}

/* Mobile
   ------------------------------------------------------------------ */

.mobile-header-layout {
	display: none;
	padding: var(--spacing-sm) 0;
}

.mobile-header-top {
	font-family: var(--font-header), system-ui, sans-serif;
	font-size: 1.3rem;
	font-weight: 700;
	line-height: 1.2;
}

.mobile-header-top p,
.mobile-header-bottom p {
	margin: 0;
}

.mobile-header-bottom {
	margin-top: 0.2rem;
	font-size: 0.88rem;
	color: color-mix(in srgb, var(--color-main) 72%, white);
}

.mobile-menu-toggle-container {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-top: var(--spacing-sm);
	padding-top: var(--spacing-xs);
	border-top: 1px solid var(--border-color);
}

.mobile-menu-label {
	font-family: var(--font-header), system-ui, sans-serif;
	font-size: 0.85rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: color-mix(in srgb, var(--color-main) 70%, white);
}

.mobile-menu-button {
	background: transparent;
	border: none;
	cursor: pointer;
	color: var(--color-main);
	display: flex;
	align-items: center;
	padding: 0.25rem;
}

.hidden {
	display: none !important;
}

.mobile-menu {
	overflow: hidden;
	max-height: 0;
	opacity: 0;
	transition: max-height 0.3s ease, opacity 0.3s ease;
}

.mobile-menu.show {
	max-height: 80vh;
	opacity: 1;
	overflow-y: auto;
}

.mobile-menu ul {
	list-style: none;
	margin: 0;
	padding: 0;
}

.mobile-menu a {
	display: block;
	padding: 0.7rem 0;
	border-bottom: 1px solid var(--border-color);
	color: var(--color-main);
	text-decoration: none;
	font-family: var(--font-header), system-ui, sans-serif;
	font-weight: 600;
	font-size: 1rem;
}

.mobile-menu ul ul a {
	padding-left: var(--spacing-sm);
	font-weight: 400;
	font-size: 0.94rem;
	color: color-mix(in srgb, var(--color-main) 75%, white);
}

.mobile-menu li.active > a {
	color: var(--color-secondary);
}

@media (max-width: 900px) {
	:root {
		--spacing-lg: 1.25rem;
		--spacing-xl: 1.5rem;
	}

	body {
		font-size: 16px;
	}

	.site-wrapper {
		border: none;
	}

	.desktop-header-layout {
		display: none;
	}

	.mobile-header-layout {
		display: block;
	}

	.content-wrapper {
		flex-direction: column;
		gap: var(--spacing-md);
		padding: var(--spacing-md);
	}

	.sidebar {
		position: static;
		flex: 1 1 auto;
		width: 100%;
		order: 2;
	}

	.main-content {
		order: 1;
		width: 100%;
	}

	h1 { font-size: 1.7rem; }
	h2 { font-size: 1.3rem; }
}