/* Standalone library page */
:root {
  --ink: #020b18;
  --cyan: #1de9ff;
  --mint: #34d399;
  --gold: #f5c842;
  --fog: #e8f4f8;
  --muted: #7ab5cc;
  --ghost: rgba(29, 233, 255, 0.11);
  --card: rgba(4, 30, 54, 0.92);
  --coral: #ff6b5b;
  --r: 16px;
}

.library-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 1.25rem 72px;
}

.library-page h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  margin: 0 0 8px;
  color: var(--fog);
}

.library-page .sub {
  color: var(--muted);
  margin-bottom: 22px;
  max-width: 760px;
  line-height: 1.55;
}

.lib-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.lib-toolbar input[type='search'] {
  flex: 1 1 220px;
  min-width: 0;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--ghost);
  background: rgba(6, 50, 86, 0.45);
  color: var(--fog);
  font: inherit;
}

.lib-tier-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.lib-tier-tabs button {
  border: 1px solid var(--ghost);
  background: rgba(29, 233, 255, 0.06);
  color: var(--muted);
  padding: 7px 12px;
  border-radius: 999px;
  font: inherit;
  font-size: 0.72rem;
  font-weight: 800;
  cursor: pointer;
}

.lib-tier-tabs button.on,
.lib-tier-tabs button:hover {
  border-color: rgba(29, 233, 255, 0.35);
  color: var(--cyan);
  background: rgba(29, 233, 255, 0.12);
}

.lib-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.lib-filters label {
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.lib-filters select {
  background: rgba(6, 50, 86, 0.45);
  border: 1px solid var(--ghost);
  color: var(--fog);
  border-radius: 10px;
  padding: 6px 10px;
  font: inherit;
  font-size: 0.78rem;
}

.lib-meta {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 14px;
}

.lib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
  align-items: stretch;
}

@media (max-width: 640px) {
  .lib-grid {
    grid-template-columns: 1fr;
  }
}

.lib-card-v2 {
  background: var(--card);
  border: 1px solid var(--ghost);
  border-radius: var(--r);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.lib-card-v2:hover {
  border-color: rgba(29, 233, 255, 0.28);
}

.lib-card-v2.open {
  border-color: rgba(29, 233, 255, 0.45);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.lib-v2-head {
  padding: 14px 16px 10px;
}

.lib-v2-cat,
.lib-v2-tier,
.lib-v2-diff {
  display: inline-block;
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 6px;
  margin-right: 6px;
  margin-bottom: 6px;
  background: rgba(29, 233, 255, 0.08);
  color: var(--cyan);
}

.lib-v2-tier {
  background: rgba(167, 139, 250, 0.12);
  color: #c4b5fd;
}

.lib-v2-diff {
  background: rgba(52, 211, 153, 0.08);
  color: var(--mint);
}

.lib-card-v2 h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
}

.lib-v2-short {
  margin: 0;
  font-size: 0.84rem;
  color: #c5dce8;
  line-height: 1.5;
}

.lib-v2-body {
  display: none;
  padding: 0 16px 16px;
  border-top: 1px solid var(--ghost);
}

.lib-card-v2.open .lib-v2-body {
  display: block;
}

.lib-v2-long h4,
.lib-v2-red h4 {
  margin: 12px 0 6px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.lib-v2-prose {
  font-size: 0.82rem;
  line-height: 1.55;
  color: #b9d6e0;
}

.lib-v2-sections {
  margin-top: 10px;
}

.lib-v2-det {
  border: 1px solid var(--ghost);
  border-radius: 10px;
  margin-bottom: 8px;
  background: rgba(2, 11, 24, 0.4);
  padding: 0 10px;
}

.lib-v2-det summary {
  cursor: pointer;
  padding: 10px 0;
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--fog);
}

.lib-v2-imp {
  font-size: 0.58rem;
  color: var(--coral);
  font-weight: 800;
  margin-left: 6px;
}

.lib-v2-red ul {
  margin: 0;
  padding-left: 1.1rem;
  color: #ffb4a8;
  font-size: 0.78rem;
}

.lib-v2-sx {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(245, 200, 66, 0.06);
  border: 1px solid rgba(245, 200, 66, 0.2);
  font-size: 0.8rem;
  color: #f5e6b0;
}

.lib-v2-cta {
  display: inline-flex;
  margin-top: 14px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(29, 233, 255, 0.12);
  border: 1px solid rgba(29, 233, 255, 0.28);
  color: var(--cyan);
  font-weight: 800;
  font-size: 0.78rem;
  text-decoration: none;
}

.lib-v2-expand-hint {
  display: block;
  width: 100%;
  border: none;
  background: rgba(6, 50, 86, 0.35);
  color: var(--dim);
  font-size: 0.65rem;
  padding: 8px;
  cursor: pointer;
  font-family: 'Space Mono', monospace;
}

.lib-card-v2.open .lib-v2-expand-hint {
  display: none;
}

.lib-card {
  background: var(--card);
  border: 1px solid var(--ghost);
  border-radius: var(--r);
  padding: 14px 16px;
  text-align: left;
}

.lib-card h3 {
  margin: 0 0 6px;
  font-family: 'Syne', sans-serif;
  font-size: 0.95rem;
  color: var(--fog);
}

.lib-card p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.45;
}

.lib-card .lib-sum {
  font-size: 0.84rem;
  color: #c5dce8;
  margin-bottom: 10px;
}

.lib-card .lib-detail {
  font-size: 0.8rem;
  color: #9fbfcf;
  line-height: 1.55;
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(2, 11, 24, 0.55);
  border: 1px solid rgba(29, 233, 255, 0.08);
  max-height: 140px;
  overflow-y: auto;
}

.lib-resource-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(29, 233, 255, 0.12);
  border: 1px solid rgba(29, 233, 255, 0.28);
  color: var(--cyan);
  font-weight: 800;
  font-size: 0.78rem;
  text-decoration: none;
}

.lib-resource-btn:hover {
  background: rgba(29, 233, 255, 0.2);
}

#libraryPager {
  display: none;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--ghost);
}

.lib-page-btn {
  background: var(--card);
  border: 1px solid var(--ghost);
  color: var(--fog);
  padding: 10px 18px;
  border-radius: 999px;
  font: inherit;
  font-weight: 800;
  font-size: 0.78rem;
  cursor: pointer;
}

.lib-page-btn:hover:not(:disabled) {
  border-color: var(--cyan);
  color: var(--cyan);
}

.lib-page-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.lib-page-info {
  font-size: 0.74rem;
  color: var(--muted);
  font-family: ui-monospace, monospace;
}

.lib-card .row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
  font-size: 0.68rem;
  color: var(--cyan);
  font-weight: 700;
}

.lib-card a {
  color: var(--cyan);
  text-decoration: none;
  font-weight: 800;
  font-size: 0.78rem;
}

.lib-card a:hover {
  text-decoration: underline;
}

.lib-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 16px;
  color: var(--muted);
}