/*
 * Owl Shelf Publishing - archive layout for /published-books/, /published-pages/ and [osp_archive].
 * Every selector starts with .osp-arch (or .osp-arch-main) so it cannot affect other pages or grids.
 * The cards themselves are styled by the existing book/page card CSS and Card Settings.
 */
.osp-arch-main { display: block; width: 100%; padding: 0 20px; box-sizing: border-box; }
.osp-arch { --osp-navy: #244a76; --osp-navy-soft: #eaf0f7; width: 100%; max-width: 1240px; margin: 32px auto; padding: 32px; box-sizing: border-box; color: #1f2d3d; background: #ffffff; border: 1px solid #e3e9f0; border-radius: 28px; }
.osp-arch *, .osp-arch *::before, .osp-arch *::after { box-sizing: border-box; }

/* Heading */
.osp-arch .osp-arch-head { margin: 0 0 28px; text-align: center; }
.osp-arch .osp-arch-title { margin: 0 0 8px !important; font-size: clamp(28px, 4vw, 40px) !important; line-height: 1.15 !important; font-weight: 800 !important; color: #172b45 !important; }
.osp-arch .osp-arch-desc { margin: 0; color: #5b6b7e; font-size: 18px; line-height: 1.5; }

/* Layout */
.osp-arch .osp-arch-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 36px; align-items: start; }
.osp-arch .osp-arch-layout.osp-arch-no-side { grid-template-columns: minmax(0, 1fr); }
.osp-arch .osp-arch-main { min-width: 0; }
.osp-arch .osp-arch-side { position: sticky; top: 24px; }

/* Sidebar tree */
.osp-arch .osp-arch-side-title { margin: 0 0 10px !important; padding: 0 !important; font-size: 22px !important; line-height: 1.3 !important; font-weight: 800 !important; color: var(--osp-navy) !important; }
.osp-arch .osp-arch-list, .osp-arch .osp-arch-sub { margin: 0; padding: 0; list-style: none; }
.osp-arch .osp-arch-item { margin: 0; padding: 0; list-style: none; }
.osp-arch .osp-arch-link, .osp-arch button.osp-arch-toggle { display: flex; align-items: center; justify-content: space-between; gap: 12px; width: 100%; margin: 0; padding: 13px 16px !important; border: 0 !important; border-radius: 12px !important; background: transparent !important; color: #1f2d3d !important; font: inherit; font-size: 18px; font-weight: 500; line-height: 1.3; text-align: left; text-decoration: none !important; text-transform: none; cursor: pointer; box-shadow: none; transition: background .15s ease; }
.osp-arch .osp-arch-link:hover, .osp-arch button.osp-arch-toggle:hover { background: #f3f6fa !important; }
.osp-arch .osp-arch-link.is-current { background: var(--osp-navy-soft) !important; color: var(--osp-navy) !important; font-weight: 800; }
.osp-arch .osp-arch-has-sub.is-open > button.osp-arch-toggle { font-weight: 700; }

/* Chevron: points right when closed, down when open */
.osp-arch .osp-arch-chevron { flex: 0 0 auto; width: 9px; height: 9px; margin-right: 4px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(-45deg); transition: transform .15s ease; }
.osp-arch .osp-arch-has-sub.is-open > button.osp-arch-toggle .osp-arch-chevron { transform: rotate(45deg); }

/* Collapsed by default; the branch that contains the selected category starts open. */
.osp-arch .osp-arch-sub { display: none; margin: 2px 0 6px 14px; padding-left: 8px; border-left: 2px solid #e3e9f0; }
.osp-arch .osp-arch-has-sub.is-open > .osp-arch-sub { display: block; }
.osp-arch .osp-arch-sub .osp-arch-link, .osp-arch .osp-arch-sub button.osp-arch-toggle { font-size: 16px; padding: 10px 14px !important; }

/* Mobile toggle button (hidden on desktop) */
.osp-arch button.osp-arch-mobile-toggle { display: none; align-items: center; justify-content: space-between; width: 100%; margin: 0; padding: 12px 16px !important; border: 1px solid #d8e0ea !important; border-radius: 12px !important; background: #ffffff !important; color: var(--osp-navy) !important; font: inherit; font-size: 16px; font-weight: 700; text-align: left; text-transform: none; cursor: pointer; box-shadow: none; }
.osp-arch .osp-arch-side.is-open button.osp-arch-mobile-toggle .osp-arch-chevron { transform: rotate(45deg); }

/* Results */
.osp-arch .osp-arch-summary { margin: 0 0 16px; color: #64748b; font-size: 14px; line-height: 1.5; }
.osp-arch .osp-arch-grid { margin: 0 !important; }
.osp-arch .osp-arch-empty { padding: 40px 24px; text-align: center; background: #ffffff; border: 2px dashed #d8e0ea; border-radius: 18px; }
.osp-arch .osp-arch-empty-title { margin: 0 0 8px; font-size: 18px; font-weight: 700; color: #142b45; }
.osp-arch .osp-arch-reset { display: inline-block; padding: 12px 26px; border-radius: 999px; background: #f2c94c; color: #222222 !important; font-weight: 700; text-decoration: none !important; }
.osp-arch .osp-arch-reset:hover { background: #e8b92b; }

/* Pagination */
.osp-arch .osp-arch-pager { margin-top: 32px; }
.osp-arch .osp-arch-pager ul.page-numbers { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 0; padding: 0; list-style: none; }
.osp-arch .osp-arch-pager ul.page-numbers li { margin: 0; padding: 0; list-style: none; }
.osp-arch .osp-arch-pager a.page-numbers, .osp-arch .osp-arch-pager span.page-numbers { display: inline-block; min-width: 42px; padding: 9px 14px; border: 1px solid #e3e9f0; border-radius: 12px; background: #ffffff; color: var(--osp-navy); font-weight: 600; text-align: center; text-decoration: none !important; }
.osp-arch .osp-arch-pager a.page-numbers:hover { background: var(--osp-navy-soft); }
.osp-arch .osp-arch-pager span.current { background: var(--osp-navy); border-color: var(--osp-navy); color: #ffffff; }
.osp-arch .osp-arch-pager span.dots { border-color: transparent; background: transparent; }

/* Visible keyboard focus */
.osp-arch a:focus-visible, .osp-arch button:focus-visible { outline: 3px solid #2b6cb0; outline-offset: 2px; }

/* Tablet and mobile: the sidebar becomes a compact "Categories" dropdown-style list above the grid. */
@media (max-width: 900px) {
	.osp-arch { padding: 20px; border-radius: 22px; margin: 20px auto; }
	.osp-arch .osp-arch-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; }
	.osp-arch .osp-arch-side { position: static; }
	.osp-arch .osp-arch-side-title { display: none; }
	.osp-arch button.osp-arch-mobile-toggle { display: flex; }
	.osp-arch .osp-arch-nav { display: none; margin-top: 8px; padding: 8px; border: 1px solid #e3e9f0; border-radius: 12px; background: #ffffff; max-height: 60vh; overflow-y: auto; }
	.osp-arch .osp-arch-side.is-open .osp-arch-nav { display: block; }
}
@media (max-width: 480px) {
	.osp-arch { padding: 16px; }
}
@media (prefers-reduced-motion: reduce) {
	.osp-arch .osp-arch-chevron, .osp-arch a, .osp-arch button { transition: none; }
}