/* Responsive navigation refinements; desktop header styling remains theme-native. */
@media (max-width: 991px) {
	.pkp_structure_head {
		position: relative;
		z-index: 30;
	}

	.pkp_site_nav_menu,
	nav.pkp_site_nav_menu {
		box-sizing: border-box;
		max-height: calc(100vh - 76px);
		max-height: calc(100dvh - 76px);
		padding: 0.75rem;
		overflow-x: hidden;
		overflow-y: auto;
		overscroll-behavior: contain;
		background: #fff;
		border: 1px solid #dce6ef;
		border-top: 3px solid #d9a441;
		border-radius: 0 0 18px 18px;
		box-shadow: 0 18px 42px rgba(11, 38, 62, 0.2);
	}

	body.navIsOpen::after {
		position: fixed;
		inset: 72px 0 0;
		z-index: 20;
		background: rgba(9, 28, 44, 0.28);
		content: "";
		pointer-events: none;
	}

	.pkp_navigation_primary_row,
	.pkp_navigation_primary_wrapper,
	.pkp_navigation_user_wrapper,
	.pkp_navigation_primary,
	.pkp_navigation_user,
	.pkp_navigation_search_wrapper {
		box-sizing: border-box;
		width: 100%;
		margin: 0;
		padding: 0;
	}

	.pkp_navigation_primary,
	.pkp_navigation_user {
		display: flex;
		flex-direction: column;
		align-items: stretch;
		gap: 0.25rem;
		text-align: left;
	}

	.pkp_navigation_primary {
		padding: 0 0.125rem 0.5rem;
	}

	.pkp_navigation_primary > li,
	.pkp_navigation_user > li {
		display: block;
		width: 100%;
		min-width: 0;
		margin: 0;
	}

	.pkp_navigation_primary > li > a,
	.pkp_navigation_user > li > a,
	.pkp_navigation_primary li ul a,
	.pkp_navigation_user li ul a {
		box-sizing: border-box;
		display: flex;
		align-items: center;
		width: 100%;
		min-height: 48px;
		margin: 0;
		padding: 0.7rem 0.9rem;
		border: 1px solid transparent;
		border-radius: 11px;
		color: #173750;
		font-size: 0.98rem;
		font-weight: 600;
		line-height: 1.35;
		text-decoration: none;
		transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease;
	}

	.pkp_navigation_primary > li > a::after {
		width: 0.45rem;
		height: 0.45rem;
		margin-left: auto;
		border-top: 1.5px solid #71879a;
		border-right: 1.5px solid #71879a;
		content: "";
		transform: rotate(45deg);
	}

	.pkp_navigation_primary > li > a[aria-haspopup="true"]::after {
		width: 0.5rem;
		height: 0.5rem;
		transform: rotate(135deg) translate(-2px, -2px);
	}

	.pkp_navigation_primary > li > a:hover,
	.pkp_navigation_primary > li > a:focus-visible,
	.pkp_navigation_user > li > a:hover,
	.pkp_navigation_user > li > a:focus-visible {
		border-color: #e4edf4;
		background: #f2f7fb !important;
		color: #084070 !important;
		outline: 0;
	}

	.pkp_navigation_primary li ul a:hover,
	.pkp_navigation_primary li ul a:focus,
	.pkp_navigation_primary li ul a:focus-visible,
	.pkp_navigation_user li ul a:hover,
	.pkp_navigation_user li ul a:focus,
	.pkp_navigation_user li ul a:focus-visible {
		background: #edf4f8 !important;
		color: #173750 !important;
	}

	.pkp_navigation_primary > li > a:focus-visible,
	.pkp_navigation_user > li > a:focus-visible,
	.pkp_navigation_search_wrapper a:focus-visible {
		box-shadow: 0 0 0 3px rgba(8, 64, 112, 0.17);
	}

	.pkp_navigation_primary li ul,
	.pkp_navigation_user li ul {
		position: static;
		width: auto;
		margin: 0.1rem 0 0.35rem 0.65rem;
		padding: 0.25rem 0 0.25rem 0.45rem;
		border-left: 2px solid #e6edf3;
		background: transparent;
		box-shadow: none;
		transform: none;
	}

	.pkp_navigation_primary li ul a,
	.pkp_navigation_user li ul a {
		min-height: 42px;
		padding: 0.55rem 0.75rem;
		color: #496176;
		font-size: 0.93rem;
		font-weight: 500;
	}

	.pkp_navigation_primary li ul a::after,
	.pkp_navigation_user li ul a::after {
		content: none;
	}

	.pkp_navigation_search_wrapper {
		margin: 0.35rem 0 0.5rem;
		padding: 0.65rem 0.125rem 0.75rem;
		border-top: 1px solid #e8eef3;
		border-bottom: 1px solid #e8eef3;
	}

	.pkp_navigation_search_wrapper a {
		box-sizing: border-box;
		display: flex;
		align-items: center;
		min-height: 46px;
		padding: 0.65rem 0.9rem;
		border: 1px solid #d9e5ee;
		border-radius: 11px;
		background: #f5f9fc;
		color: #23465f;
		font-size: 0.95rem;
		font-weight: 600;
		text-decoration: none;
	}

	.pkp_navigation_search_wrapper a::after {
		margin-left: auto;
		color: #698197;
		content: "→";
		font-size: 1.15rem;
	}

	.pkp_navigation_search_wrapper a:hover {
		border-color: #b7cbd9;
		background: #edf4f8;
	}

	.pkp_navigation_user {
		gap: 0.55rem;
		margin-top: 0.5rem;
		padding: 0.75rem 0.125rem 0.125rem;
		border-top: 1px solid #e8eef3;
	}

	.pkp_navigation_user::before {
		grid-column: 1 / -1;
		margin: 0 0 0.15rem 0.15rem;
		color: #718496;
		content: "YOUR ACCOUNT";
		font-size: 0.66rem;
		font-weight: 750;
		letter-spacing: 0.13em;
	}

	.pkp_navigation_user:has(> li > a[href*="/register"]) {
		display: grid;
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.pkp_navigation_user > li > a[href*="/register"],
	.pkp_navigation_user > li > a[href*="/login"] {
		justify-content: center;
		min-height: 46px;
		padding: 0.65rem 0.5rem;
		border: 1px solid #0b4777;
		border-radius: 11px;
		font-size: 0.94rem;
		font-weight: 700;
		text-align: center;
	}

	.pkp_navigation_user > li > a[href*="/register"] {
		background: #0b4777;
		color: #fff;
	}

	.pkp_navigation_user > li > a[href*="/register"]:hover,
	.pkp_navigation_user > li > a[href*="/register"]:focus-visible {
		border-color: #07365d;
		background: #07365d;
		color: #fff;
	}

	.pkp_navigation_user > li > a[href*="/login"] {
		background: #fff;
		color: #0b4777;
	}

	.pkp_navigation_user > li > a[href*="/login"]:hover,
	.pkp_navigation_user > li > a[href*="/login"]:focus-visible {
		background: #eef5fa;
	}
}

/* Dropdowns have a light surface, so their hover and keyboard-focus text must stay dark. */
@media (min-width: 992px) {
	.pkp_site_nav_menu .pkp_navigation_primary li ul a:hover,
	.pkp_site_nav_menu .pkp_navigation_primary li ul a:focus,
	.pkp_site_nav_menu .pkp_navigation_primary li ul a:focus-visible,
	.pkp_site_nav_menu .pkp_navigation_user li ul a:hover,
	.pkp_site_nav_menu .pkp_navigation_user li ul a:focus,
	.pkp_site_nav_menu .pkp_navigation_user li ul a:focus-visible {
		background: #eef5fa !important;
		color: #084070 !important;
	}
}

/* Tablets get a compact, anchored panel instead of a full-width sheet. */
@media (min-width: 768px) and (max-width: 991px) {
	.pkp_site_nav_menu,
	nav.pkp_site_nav_menu {
		left: 1rem;
		width: min(430px, calc(100vw - 2rem));
		max-height: calc(100vh - 84px);
		max-height: calc(100dvh - 84px);
		border-radius: 0 0 18px 18px;
	}
}

/* Keep the current journal masthead and hamburger placement intact. */
@media (max-width: 767px) {
	.pkp_site_name_wrapper {
		box-sizing: border-box;
		display: flex;
		align-items: center;
		justify-content: center;
		min-height: 72px !important;
		padding: 8px 4rem !important;
	}

	.pkp_site_name {
		box-sizing: border-box;
		display: flex;
		align-items: center;
		justify-content: center;
		width: 100%;
		min-width: 0;
		min-height: 52px;
		margin: 0;
		padding: 0;
	}

	.pkp_site_name .is_img {
		box-sizing: border-box;
		display: flex;
		align-items: center;
		justify-content: center;
		width: 100%;
		max-width: 100%;
		margin: 0;
	}

	.pkp_site_name .is_img img {
		display: block;
		width: auto;
		max-width: min(260px, 100%);
		max-height: 48px;
		object-fit: contain;
	}

	.pkp_site_nav_toggle {
		top: 50%;
		left: 12px;
		transform: translateY(-50%);
	}

	.obj_issue_toc .cover {
		box-sizing: border-box;
		width: 100%;
		max-width: 12rem;
		aspect-ratio: 3 / 4;
		margin: 0 auto;
	}

	.obj_issue_toc .cover picture,
	.obj_issue_toc .cover img {
		display: block;
		width: 100%;
		height: 100%;
		max-height: 18rem;
		object-fit: contain;
	}
}

@media (prefers-reduced-motion: reduce) {
	.pkp_navigation_primary a,
	.pkp_navigation_user a,
	.pkp_navigation_search_wrapper a {
		transition: none;
	}
}