/* Public accompaniment library: one groove rail, one source filter, one list. */
[data-screen-section][hidden] {
  display: none !important;
}

.backing-library {
  overflow: hidden;
  padding: 0;
  border: 4px solid var(--mem-ink);
  border-radius: 22px;
  background: var(--mem-paper);
  box-shadow: var(--mem-shadow);
}

.backing-taxonomy {
  padding: 14px clamp(14px, 2vw, 22px) 18px;
  color: var(--mem-paper);
  background: var(--mem-ink);
}

.backing-kind-filter {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  margin-bottom: 10px;
}

.backing-kind-filter > strong {
  font: 850 12px/1 var(--mem-body);
  letter-spacing: .04em;
}

.backing-kind-options {
  display: flex;
  gap: 7px;
}

.backing-kind-options button {
  min-height: 44px;
  padding: 7px 13px;
  border: 2px solid rgba(255, 253, 245, .62);
  border-radius: 9px;
  color: var(--mem-paper);
  background: rgba(255, 253, 245, .06);
  box-shadow: none;
  font: 850 13px/1 var(--mem-body);
}

.backing-kind-options button.active {
  border-color: var(--mem-mint);
  color: var(--mem-ink);
  background: var(--mem-mint);
}

.backing-category-browser {
  min-width: 0;
}

.backing-category-rail {
  display: flex;
  align-items: stretch;
  width: 100%;
  gap: 10px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scroll-padding-inline: 2px;
  scroll-snap-type: x proximity;
  scrollbar-color: var(--mem-yellow) transparent;
  scrollbar-width: thin;
}

.backing-category-card {
  display: flex;
  flex: 0 0 clamp(158px, 18vw, 214px);
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  min-height: 88px;
  padding: 13px 16px;
  gap: 7px;
  border: 2px solid rgba(255, 253, 245, .58);
  border-radius: 13px;
  color: rgba(255, 253, 245, .68);
  background: rgba(255, 253, 245, .055);
  box-shadow: none;
  scroll-snap-align: start;
  text-align: left;
  transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}

.backing-category-card strong {
  max-width: 100%;
  overflow: hidden;
  font: 900 clamp(16px, 1.6vw, 22px)/1.1 var(--mem-display);
  letter-spacing: -.025em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.backing-category-card small {
  font: 800 11px/1 var(--mem-data);
}

.backing-category-card.active {
  border-color: var(--mem-yellow);
  color: var(--mem-ink);
  background: var(--mem-yellow);
}

.backing-category-all {
  flex-basis: 76px;
  min-width: 76px;
  align-items: center;
  padding-inline: 8px;
  text-align: center;
}

.backing-category-all strong {
  font-size: 15px;
}

.backing-results {
  margin: 0;
  padding: 0 clamp(14px, 2vw, 22px) 10px;
  background: var(--mem-paper);
}

.backing-result-grid {
  display: block;
}

.backing-result-card {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: center;
  width: 100%;
  min-height: 96px;
  gap: 14px;
  padding: 14px 4px;
  border: 0;
  border-bottom: 2px solid var(--mem-ink);
  border-radius: 0;
  color: var(--mem-ink);
  background: transparent;
  box-shadow: none;
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.backing-result-card:last-child {
  border-bottom: 0;
}

.backing-result-card.current {
  background: rgba(255, 217, 61, .22);
}

.backing-result-index {
  align-self: start;
  padding-top: 5px;
  color: var(--mem-coral);
  font: 900 14px/1 var(--mem-data);
}

.backing-result-main {
  display: block;
  min-width: 0;
}

.backing-result-labels {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 5px;
}

.backing-result-badge,
.backing-result-groove,
.backing-result-open {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 4px 8px;
  border-radius: 999px;
  font: 850 10px/1 var(--mem-body);
}

.backing-result-badge {
  background: var(--mem-yellow);
}

.backing-result-groove {
  border: 1px solid rgba(24, 49, 83, .45);
  color: var(--mem-secondary);
  background: transparent;
}

.backing-result-open {
  border: 1px solid var(--mem-ink);
  color: var(--mem-ink);
  background: var(--mem-mint);
}

.backing-result-title {
  display: block;
  margin: 0 0 4px;
  overflow: hidden;
  font: 900 clamp(20px, 2.2vw, 31px)/1.08 var(--mem-display);
  letter-spacing: -.03em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.backing-result-description {
  display: block;
  max-width: 78ch;
  margin: 0;
  overflow: hidden;
  color: var(--mem-secondary);
  font: 700 13px/1.4 var(--mem-body);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.backing-result-meta {
  display: block;
  margin-top: 8px;
  font: 850 11px/1.25 var(--mem-data);
}

.backing-result-current {
  display: inline-flex;
  align-items: center;
  min-height: 22px;
  padding: 4px 8px;
  border-radius: 999px;
  color: var(--mem-coral);
  font: 900 11px/1 var(--mem-body);
}

.backing-library-empty {
  padding: 42px 18px;
  color: var(--mem-secondary);
  text-align: center;
}

.backing-library-empty strong {
  display: block;
  color: var(--mem-ink);
  font: 900 20px/1.15 var(--mem-display);
}

.backing-library-empty p {
  margin: 8px 0 0;
  font-size: 13px;
}

.backing-category-card:focus-visible,
.backing-kind-options button:focus-visible,
.backing-result-card:focus-visible {
  outline: 3px solid var(--mem-coral);
  outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  .backing-category-card:not(.active):hover {
    border-color: var(--mem-paper);
    color: var(--mem-paper);
    background: rgba(255, 253, 245, .11);
  }

  .backing-result-card:hover {
    background: rgba(145, 228, 195, .18);
  }

}

body[data-screen="backings"] .skip-link,
body[data-screen="library"] .skip-link,
body[data-screen="knowledge"] .skip-link {
  display: none;
}

@media (max-width: 720px) {
  .backing-library {
    padding: 0;
    border-width: 3px;
    border-radius: 18px;
  }

  .backing-taxonomy {
    padding: 10px 10px 14px;
  }

  .backing-kind-filter {
    gap: 9px;
  }

  .backing-category-rail {
    gap: 7px;
  }

  .backing-category-card {
    flex-basis: clamp(132px, 43vw, 176px);
    min-height: 76px;
    padding: 10px 12px;
  }

  .backing-category-all {
    flex-basis: 64px;
    min-width: 64px;
  }

  .backing-results {
    padding-inline: 10px;
  }

  .backing-result-card {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 10px;
    padding: 14px 2px;
  }

  .backing-result-index {
    font-size: 11px;
  }

  .backing-result-title {
    font-size: clamp(18px, 5.4vw, 24px);
  }

  .backing-result-description {
    display: -webkit-box;
    overflow: hidden;
    white-space: normal;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

}

@media (max-width: 430px) {
  .backing-kind-filter > strong {
    font-size: 11px;
  }

  .backing-kind-options button {
    padding-inline: 11px;
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .backing-category-card {
    transition: none;
  }
}