/* C4: Library-specific layout; shares Vial Vibes colors and typography. */
.research-library { margin: 0; }
.research-library [hidden] { display: none !important; }
.research-library a { color: inherit; text-decoration: none; }
.research-library a:hover { color: var(--vv-cyan); }
.research-library button, .research-library input, .research-library select { font: inherit; }
.research-library :is(a, button, input, select, summary):focus-visible { outline: 2px solid var(--vv-cyan); outline-offset: 5px; }
.library-shell { width: min(1240px, calc(100% - 64px)); margin-inline: auto; }
.library-skip { position: absolute; left: 24px; top: -100px; z-index: 100; padding: 12px; background: var(--vv-bg-deep); }
.library-skip:focus { top: 12px; }
.library-nav { position: relative; z-index: 5; }
.library-nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 88px; }
.library-logo { display: block; width: 176px; height: 48px; }
.library-nav-links { display: flex; align-items: center; gap: 25px; font-size: .85rem; font-weight: 500; }
.library-mobile-nav { display: none; }
.library-mobile-nav summary { cursor: pointer; padding: 12px 4px; }
.library-mobile-links { position: absolute; left: 0; right: 0; padding: 16px 24px; background: var(--vv-bg-deep); border-bottom: 1px solid var(--vv-border-strong); }
.library-mobile-links a { display: block; padding: 12px; }
.library-notice { text-align: center; font-size: .78rem; padding: 12px 24px; color: #c4d1df; border-bottom: 1px solid var(--vv-border); background: rgba(0,229,255,.025); }
.library-notice strong { color: var(--vv-cyan); }
.library-hero { padding: 32px 0 44px; }
.library-breadcrumb { display: flex; gap: 10px; font-size: .78rem; color: var(--vv-text-muted); margin-bottom: 36px; }
.library-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 64px; align-items: center; }
.library-eyebrow { font-family: var(--font-mono); color: var(--vv-cyan); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; }
.library-hero h1 { font-family: var(--font-display); font-size: clamp(2.35rem, 4.6vw, 3.9rem); font-weight: 500; line-height: 1.08; letter-spacing: -.055em; margin: 16px 0 22px; }
.library-hero h1 span { color: var(--vv-cyan); }
.library-intro { color: #b5c0d2; max-width: 680px; font-size: 1rem; line-height: 1.8; margin: 0; }
.library-guide { border: 1px solid var(--vv-border); border-radius: 16px; padding: 24px; background: rgba(15,12,41,.42); }
.library-guide h2 { font-size: .85rem; margin: 0 0 10px; }
.library-entry-key { margin: 20px 0; display: grid; gap: 20px; }
.library-entry-key dd { margin: 8px 0 0; font-size: .8rem; color: #b5c0d2; line-height: 1.6; }
.library-guide a { font-size: .8rem; color: var(--vv-cyan); text-decoration: underline; text-underline-offset: 4px; }
.library-controls { padding: 24px; background: rgba(30,27,75,.5); border: 1px solid rgba(148,163,184,.22); border-radius: 18px; box-shadow: 0 12px 40px rgba(0,0,0,.12); }
.library-search-row { display: grid; grid-template-columns: minmax(220px, 1.4fr) minmax(190px, 1fr) minmax(190px, 1fr) auto; align-items: end; gap: 16px; }
.library-search-field, .library-select-field { min-width: 0; }
.library-controls label { font-size: .78rem; font-weight: 600; color: #c6d1e0; display: block; margin-bottom: 9px; }
.library-controls input, .library-controls select { display: block; width: 100%; min-height: 48px; border: 1px solid #525c78; border-radius: 9px; background: #110f2d; color: var(--vv-text); padding: 12px; font-size: .85rem; color-scheme: dark; }
.library-controls select { cursor: pointer; }
.library-controls input:hover, .library-controls select:hover { border-color: #94a3b8; }
.library-search-field input::placeholder { color: #98a6be; opacity: 1; }
.library-search-hint { margin: 14px 0 0; font-size: .76rem; line-height: 1.65; color: #a8b6ca; }
.library-reset { border: 1px solid #525c78; color: #d5deeb; background: transparent; border-radius: 9px; min-height: 48px; padding: 10px 16px; cursor: pointer; font-size: .8rem !important; white-space: nowrap; }
.library-reset:hover { border-color: var(--vv-cyan); color: var(--vv-cyan); }
.library-result-line { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 24px; margin: 24px 0 36px; color: var(--vv-text-muted); font-size: .78rem; overflow-wrap: anywhere; }
.library-result-line p { margin: 0; }
#library-count { color: #d5deeb; }
.library-section { margin-bottom: 48px; }
.library-section-heading { display: grid; gap: 8px; margin-bottom: 22px; }
.library-section-heading h2 { font-family: var(--font-display); font-weight: 500; margin: 0; font-size: 1.4rem; display: flex; align-items: center; gap: 12px; }
.library-section-count { display: inline-grid; place-items: center; min-width: 28px; height: 28px; padding: 0 7px; border: 1px solid #525c78; border-radius: 8px; color: #c6d1e0; font: .75rem var(--font-mono); }
.library-section-heading p { margin: 0; color: #a8b6ca; font-size: .8rem; line-height: 1.7; max-width: 760px; }
.research-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.research-card { --entry-accent: #67e8f9; min-width: 0; display: flex; flex-direction: column; padding: 26px 24px 18px; border: 1px solid rgba(148,163,184,.23); border-radius: 16px; background: linear-gradient(145deg, rgba(35,32,70,.72), rgba(18,17,40,.8)); transition: border-color .18s ease, background-color .18s ease; }
.research-card[data-entry-type="reference"] { --entry-accent: #d8b4fe; background: linear-gradient(145deg, rgba(48,32,70,.6), rgba(18,17,40,.8)); }
.research-card:hover, .research-card:focus-within { border-color: var(--entry-accent); }
.research-kind { display: inline-flex; align-self: start; width: fit-content; padding: 5px 9px; border: 1px solid rgba(103,232,249,.3); border-radius: 6px; background: rgba(103,232,249,.06); color: #a5f3fc; font-size: .68rem; font-weight: 600; letter-spacing: .035em; }
.research-kind-reference { border-color: rgba(216,180,254,.3); background: rgba(216,180,254,.06); color: #e9d5ff; }
.research-tag { color: #b7c5d8; font-size: .74rem; margin: 0 0 16px; }
.research-card h3 { font-family: var(--font-display); font-size: 1.4rem; font-weight: 500; line-height: 1.35; letter-spacing: -.025em; margin: 20px 0 8px; overflow-wrap: anywhere; }
.research-card h3 a { text-decoration: none; }
.research-description { margin: 0 0 24px; font-size: .88rem; line-height: 1.8; color: #c0cada; flex: 1; }
.research-links { display: grid; border-top: 1px solid var(--vv-border); padding-top: 8px; }
.research-links a { display: inline-flex; align-items: center; min-height: 44px; font-size: .78rem; color: #c6d1e0; text-decoration: underline; text-decoration-color: #59667b; text-underline-offset: 5px; }
.research-links .research-overview { justify-content: space-between; gap: 12px; color: var(--entry-accent); font-size: .85rem; font-weight: 600; text-decoration: none; }
.research-links .research-overview:hover { text-decoration: underline; }
.research-documents { display: flex; flex-wrap: wrap; gap: 0 24px; }
.research-reference-note { color: #b9abc9; font-size: .72rem; line-height: 1.7; margin: 10px 0 6px; }
.research-models { color: #b7c5d8; font-size: .76rem; line-height: 1.7; margin: 0 0 20px; }
.research-reference-label { margin: 0 0 16px; padding: 8px 10px; border: 1px solid #74608c; border-radius: 7px; color: #e1d5fa; background: #29203e; font-size: .72rem; line-height: 1.6; }
.reference-note { scroll-margin-top: 24px; margin-bottom: 24px; padding: 28px; border: 1px dashed #74608c; border-radius: 14px; background: rgba(37,27,62,.48); }
.reference-note h1, .reference-note > h2 { font-family: var(--font-display); font-size: 1.8rem; margin: 0 0 12px; }
.reference-note h1 ~ h2, .reference-note h3 { font-family: inherit; font-size: .95rem; margin: 20px 0 8px; }
.reference-note p, .reference-note li { color: #c0cbdc; line-height: 1.8; }
.reference-note .research-reference-label { display: inline-block; color: #e1d5fa; }
.reference-note a, .reference-note-index a { color: var(--vv-cyan); text-decoration: underline; text-underline-offset: 4px; }
.reference-note-index { display: flex; flex-wrap: wrap; gap: 12px 24px; padding: 0; margin: 0 0 32px; list-style: none; }
.reference-note-index a { display: inline-block; padding-block: 8px; }
.reference-note ul.evidence-types { list-style: none; padding-left: 0; display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.35rem 0 0.85rem; }
.reference-note ul.evidence-types li { margin: 0; border: 1px solid rgba(0, 229, 255, 0.35); border-radius: 999px; padding: 0.35rem 0.75rem; color: #E2E8F0; font-size: 0.8125rem; font-weight: 600; line-height: 1.35; background: rgba(0, 229, 255, 0.06); }
.reference-note p.studied-note { color: #FDE68A; font-size: 0.8125rem; margin-top: 0.35rem; }
.reference-note .uncertain-block { background: rgba(168, 85, 247, 0.12); border: 1px solid rgba(168, 85, 247, 0.35); border-radius: 1rem; padding: 0.9rem 1rem; margin-top: 0.35rem; }
.reference-note .limitation-kicker { font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; font-weight: 700; color: #FDE68A; margin: 0 0 0.35rem; }
.reference-note ul.reference-cites { list-style: none; padding-left: 0; display: flex; flex-direction: column; gap: 0.75rem; margin: 0.35rem 0 0; }
.reference-note ul.reference-cites li { margin: 0; background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(248, 249, 250, 0.12); border-left: 3px solid var(--vv-cyan); border-radius: 0.9rem; padding: 0.9rem 1rem; color: #E2E8F0; }
.reference-note-links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 18px; }
.research-unavailable { color: var(--vv-text-muted); font-size: .72rem; padding-block: 12px; }
.library-empty { padding: 40px 24px; text-align: center; border: 1px dashed #525c78; border-radius: 14px; margin-bottom: 36px; }
.library-empty h2 { font-size: 1.2rem; }
.library-empty p { color: var(--vv-text-muted); }
.library-resources { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; padding: 32px 0 48px; border-top: 1px solid var(--vv-border); }
.library-resources h2 { font-family: var(--font-display); font-weight: 500; font-size: 1.15rem; margin: 0 0 12px; }
.library-resources p { color: var(--vv-text-muted); font-size: .84rem; line-height: 1.8; }
.library-resource-links { display: flex; flex-wrap: wrap; gap: 12px 24px; }
.library-resources a { color: var(--vv-cyan); text-decoration: underline; text-underline-offset: 4px; font-size: .82rem; overflow-wrap: anywhere; }
.library-footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 24px; padding-block: 28px; font-size: .75rem; color: var(--vv-text-muted); }
.library-footer-inner p { margin: 0; }
.library-footer-links { display: flex; flex-wrap: wrap; gap: 20px; }
.library-fallback { margin: 16px 0 32px; }
.library-fallback a { color: var(--vv-cyan); text-decoration: underline; }
.library-fallback li { padding: 8px 0; }
@media (max-width: 1050px) {
  .library-nav-links { gap: 16px; font-size: .78rem; }
  .library-hero-grid { grid-template-columns: minmax(0, 1fr) 280px; gap: 30px; }
  .library-search-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto; }
  .library-search-field { grid-column: 1 / -1; }
  .research-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .library-shell { width: calc(100% - 36px); }
  .library-nav-links { display: none; }
  .library-mobile-nav { display: block; }
  .library-nav-inner { min-height: 76px; }
  .library-hero { padding-top: 24px; }
  .library-breadcrumb { margin-bottom: 28px; }
  .library-hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .library-guide { padding: 20px; }
  .library-entry-key { grid-template-columns: 1fr 1fr; gap: 16px; }
  .library-controls { padding: 18px; }
  .library-search-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
  .library-reset { align-self: start; }
  .library-result-line { flex-direction: column; gap: 8px; }
  .library-resources { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 540px) {
  .library-guide { display: none; }
  .library-hero { padding-bottom: 28px; }
  .library-hero h1 { margin-block: 12px 18px; }
  .library-intro { font-size: .92rem; line-height: 1.75; }
  .library-search-row { grid-template-columns: minmax(0, 1fr); }
  .library-entry-key { grid-template-columns: 1fr; }
  .research-grid { grid-template-columns: 1fr; }
  .research-card { padding-inline: 22px; }
  .library-section-heading h2 { font-size: 1.25rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .research-card { transition: none; }
}