/* Public Library overlay. Shared campus styles and course rendering stay intact. */
.library-main { min-width: 0; }
.library-welcome { padding-block: clamp(2rem, 6vw, 4rem) 2rem; border-bottom: 3px solid var(--accent); }
.library-welcome h1 { max-width: 18ch; font-size: clamp(2.2rem, 5.6vw, 3.6rem); line-height: 1.3; letter-spacing: -0.025em; }
.library-lead { max-width: 57ch; font-size: 1.125rem; }
.library-jumps { display: flex; flex-wrap: wrap; gap: 0.5rem 1.6rem; }
.library-jumps a { min-height: 44px; padding-block: 0.65rem; font-weight: 650; }
.library-jumps span { padding-inline-start: 0.3rem; }
.reading-sources { padding-block: 2.5rem; overflow-wrap: anywhere; }
.sources-heading { max-width: 66ch; }
.sources-heading h2 { font-size: clamp(1.6rem, 3vw, 2rem); }
.source-controls { padding: clamp(1rem, 3vw, 1.5rem); border: 1px solid var(--line); border-radius: 0.5rem; background: var(--soft); }
.source-query { max-width: 64ch; }
.source-query input { width: 100%; min-width: 0; min-height: 48px; }
.source-query .small { margin-top: 0.5rem; }
.source-error:empty { display: none; }
.source-error { color: var(--danger); font-weight: 600; }
.source-filters { min-inline-size: 0; padding: 1rem 0 0; margin: 1.2rem 0 0; border: 0; border-top: 1px solid var(--line); }
.source-filters legend { padding: 0 0.6rem 0 0; font-weight: 700; }
.source-filter-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.source-filter-grid > div { min-width: 0; }
.source-filter-grid select { width: 100%; min-width: 0; min-height: 48px; }
.source-filters > .small { margin: 0.7rem 0 0; }
.sources-result-line { display: flex; justify-content: space-between; align-items: baseline; gap: 0.5rem 1rem; flex-wrap: wrap; margin-top: 1.5rem; }
.sources-result-line p { margin-bottom: 0.5rem; }
#source-status { font-weight: 650; }
.source-card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.source-card { display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--line); border-top: 4px solid var(--accent); border-radius: 0.4rem; background: var(--surface); padding: clamp(1rem, 2.5vw, 1.5rem); }
.source-card h3 { margin-bottom: 0.5rem; font-size: 1.3rem; line-height: 1.45; }
.source-domain { color: var(--muted); font-size: 0.875rem; margin-bottom: 1rem; overflow-wrap: anywhere; }
.source-access { align-self: flex-start; color: var(--accent); background: var(--soft); padding: 0.25rem 0.55rem; border: 1px solid var(--accent); border-radius: 0.2rem; font-size: 0.875rem; font-weight: 650; }
.source-access-note { font-size: 0.9375rem; }
.source-tags { color: var(--muted); font-size: 0.875rem; }
.source-details { font-size: 0.9375rem; margin-bottom: 1rem; }
.source-details summary { min-height: 44px; padding-block: 0.6rem; color: var(--link); font-weight: 600; cursor: pointer; }
.source-details dl { margin-block: 0.5rem 1rem; }
.source-details dt { font-weight: 650; }
.source-details dd { margin: 0 0 0.8rem; }
.source-details a { display: inline-block; min-height: 44px; padding-block: 0.5rem; }
.source-details .source-reference-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; }
.source-actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: auto; padding-top: 0.5rem; }
.source-actions a { min-width: 0; max-width: 100%; min-height: 44px; padding: 0.65rem 0.8rem; border: 2px solid var(--accent); border-radius: 0.3rem; color: var(--accent); font-weight: 650; }
.source-actions .source-search { color: var(--surface); background: var(--accent); text-decoration: none; }
.source-actions .source-search:hover { text-decoration: underline; }
.source-empty, .source-fallback { border: 1px solid var(--line); border-radius: 0.4rem; padding: 1.25rem; background: var(--surface); }
.source-fallback a { display: inline-block; padding-block: 0.4rem; min-height: 44px; }
.reading-sources :focus-visible, .library-jumps a:focus-visible { outline: 3px solid var(--ink); outline-offset: 4px; }
.course-library-intro { border-top: 3px solid var(--accent); }
.course-library-intro, #library-content, .library-main > noscript { max-width: 70ch; }
@media (max-width: 620px) {
  .source-card-grid, .source-filter-grid { grid-template-columns: minmax(0, 1fr); }
  .source-actions { flex-direction: column; align-items: flex-start; }
}
/* No animation, smooth scrolling or motion-dependent interaction is used. */

.technical-reading { padding-block: 0.5rem 2.5rem; overflow-wrap: anywhere; }
.technical-reading-list { list-style: none; padding: 0; margin: 1rem 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem 2rem; }
.technical-reading-list > li { min-width: 0; border-top: 1px solid var(--line); padding-block: 1rem; margin: 0; }
.technical-reading-topic { color: var(--muted); font-size: 0.875rem; margin-bottom: 0.25rem; }
.technical-reading-list h3 { font-size: 1.125rem; }
.technical-reading-list h3 a, .technical-reading-rights { display: inline-block; min-height: 44px; padding-block: 0.5rem; }
.technical-reading-rights { font-size: 0.875rem; }
@media (max-width: 620px) { .technical-reading-list { grid-template-columns: minmax(0, 1fr); } }