/* Coverflow carousel — radio-driven 3D shelf (adapted from classic CSS coverflow) */

.hl-coverflow {
  --cf-transition: 0.4s;
  --cf-size: 150px;
  --cf-overlap: -48px;
  --cf-bg: #212121;
  --cf-item: #414141;
  --cf-item-active: #313131;
  --cf-item-after: #515151;
  --cf-muted: #999;
  --cf-caption: #a1a1aa;
  --cf-caption-active: #fff;
  --cf-control-bg: #252525;
  --cf-control-border: #0a0a0a;
  width: 100%;
  max-width: min(720px, 100%);
  margin: 0 auto;
  overflow-x: clip;
}

.hl-coverflow.is-light {
  --cf-bg: transparent;
  --cf-item: #e8eef4;
  --cf-item-active: #fff;
  --cf-item-after: #d5dee8;
  --cf-muted: #64748b;
  --cf-caption: #64748b;
  --cf-caption-active: #0f172a;
  --cf-control-bg: #f8fafc;
  --cf-control-border: #cbd5e1;
}

.hl-coverflow-stage {
  position: relative;
  width: 100%;
  max-width: 100%;
  padding: 1.25rem 0 0.5rem;
  overflow-x: clip;
  -webkit-box-reflect: below 0 linear-gradient(transparent 55%, rgba(0, 0, 0, 0.12) 100%);
}

.hl-coverflow-list {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: flex-end;
  width: 100%;
  max-width: 100%;
  margin: 0;
  padding: 1.5rem 0.5rem 1.75rem;
  list-style: none;
  perspective: 900px;
  perspective-origin: 50% 35%;
  transform-style: preserve-3d;
  overflow-x: clip;
}

.hl-coverflow-list > input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0;
  height: 0;
}

.hl-coverflow-item {
  display: inline-block;
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  width: var(--cf-size);
  margin: 0 var(--cf-overlap);
  background: var(--cf-item);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.35);
  transform: rotateY(45deg);
  transform-style: preserve-3d;
  transition: transform var(--cf-transition) ease, margin var(--cf-transition) ease, background var(--cf-transition) ease, box-shadow var(--cf-transition) ease;
}

.hl-coverflow-item label,
.hl-coverflow-item label.dict-sheet-preview {
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
  border: 0;
  border-radius: 0;
  cursor: pointer;
  background: transparent;
  color: inherit;
  text-shadow: none;
  box-shadow: none;
  text-align: left;
  overflow: visible;
  transform: none !important;
}

.hl-coverflow-cover {
  display: block;
  margin: 0;
  width: var(--cf-size);
  background: transparent;
}

.hl-coverflow-cover img,
.hl-coverflow-cover .hl-coverflow-placeholder {
  display: block;
  width: var(--cf-size);
  height: var(--cf-size);
  object-fit: cover;
  object-position: top center;
  background: #0f172a;
}

.hl-coverflow-cover img {
  opacity: 0.5;
  transition: opacity var(--cf-transition) ease;
}

.hl-coverflow-cover .hl-coverflow-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a3b8;
  font-size: 2rem;
  background: linear-gradient(160deg, #1e293b, #0f172a);
}

.hl-coverflow-name {
  display: block;
  margin: 0;
  padding: 0.45rem 0.4rem 0.55rem;
  text-align: center;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--cf-caption);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--cf-transition) ease;
}

.hl-coverflow-list > input[type="radio"]:checked + .hl-coverflow-item {
  z-index: 5;
  margin-left: 0.35rem;
  margin-right: 0.35rem;
  background: var(--cf-item-active);
  transform: rotateY(0deg);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.hl-coverflow-list > input[type="radio"]:checked + .hl-coverflow-item img {
  opacity: 1;
}

.hl-coverflow-list > input[type="radio"]:checked + .hl-coverflow-item .hl-coverflow-name {
  color: var(--cf-caption-active);
}

.hl-coverflow-list > input[type="radio"]:checked + .hl-coverflow-item ~ .hl-coverflow-item {
  transform: rotateY(-45deg);
  background: var(--cf-item-after);
}

.hl-coverflow-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  margin: 0.35rem auto 0;
  padding: 0.5rem 0 0;
  text-align: center;
}

.hl-coverflow-controls label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--cf-control-border);
  border-radius: 0.3rem;
  cursor: pointer;
  color: var(--cf-muted);
  background: var(--cf-control-bg);
  font-size: 0.75rem;
  font-weight: 600;
  user-select: none;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.hl-coverflow-controls label:hover,
.hl-coverflow-controls label:focus-visible {
  color: var(--cf-caption-active);
  outline: none;
}

.hl-coverflow.is-light .hl-coverflow-controls label:hover,
.hl-coverflow.is-light .hl-coverflow-controls label:focus-visible {
  border-color: #0d3b66;
  color: #0d3b66;
  background: #fff;
}

.hl-coverflow-nav {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.65rem;
}

.hl-coverflow-nav button {
  width: 2.35rem;
  height: 2.35rem;
  border: 0;
  border-radius: 50%;
  background: #0f172a;
  color: #fff;
  box-shadow: 0 5px 16px rgba(15, 23, 42, 0.24);
  cursor: pointer;
}

.hl-coverflow-nav button:hover:not(:disabled) {
  background: #1d4ed8;
}

.hl-coverflow-nav button:disabled {
  opacity: 0.35;
  cursor: default;
}

.hl-coverflow-status {
  margin-top: 0.45rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--cf-muted);
}

/* Portrait sheets (hymnology) */
.hl-coverflow.is-sheets {
  --cf-size: 168px;
  --cf-overlap: -58px;
  max-width: min(780px, 100%);
}

.hl-coverflow.is-sheets .hl-coverflow-cover img,
.hl-coverflow.is-sheets .hl-coverflow-cover .hl-coverflow-placeholder {
  height: calc(var(--cf-size) * 1.28);
}

/* MIDI home: slightly larger tiles */
.hl-coverflow.is-midi {
  --cf-size: 156px;
  --cf-overlap: -52px;
  max-width: min(820px, 100%);
}

.hl-coverflow.is-midi .hl-coverflow-meta {
  display: block;
  padding: 0 0.4rem 0.15rem;
  font-size: 0.65rem;
  color: var(--cf-muted);
  text-align: center;
}

.hl-coverflow-play {
  display: block;
  margin: 0 auto 0.55rem;
  padding: 0.28rem 0.55rem;
  max-width: 92%;
  text-align: center;
  font-size: 0.68rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 999px;
  color: #fff;
  background: #1d4ed8;
  opacity: 0;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity var(--cf-transition) ease, transform var(--cf-transition) ease;
}

.hl-coverflow-list > input[type="radio"]:checked + .hl-coverflow-item .hl-coverflow-play {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 700px) {
  .hl-coverflow {
    --cf-size: 120px;
    --cf-overlap: -40px;
  }
  /* Match .is-midi / .is-sheets specificity so mobile sizes actually apply */
  .hl-coverflow.is-sheets {
    --cf-size: 112px;
    --cf-overlap: -38px;
  }
  .hl-coverflow.is-midi {
    --cf-size: 108px;
    --cf-overlap: -36px;
  }
  .hl-coverflow-stage {
    -webkit-box-reflect: unset;
    padding: 0.85rem 0 0.25rem;
  }
  .hl-coverflow-list {
    padding: 1rem 0.25rem 1.25rem;
  }
  .hl-coverflow-item {
    transform: rotateY(32deg);
  }
  .hl-coverflow-list > input[type="radio"]:checked + .hl-coverflow-item ~ .hl-coverflow-item {
    transform: rotateY(-32deg);
  }
  .hl-coverflow-controls {
    gap: 0.25rem;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .hl-coverflow {
    --cf-size: 92px;
    --cf-overlap: -30px;
  }
  .hl-coverflow.is-sheets {
    --cf-size: 96px;
    --cf-overlap: -32px;
  }
  .hl-coverflow.is-midi {
    --cf-size: 86px;
    --cf-overlap: -28px;
  }
  .hl-coverflow-item {
    transform: rotateY(24deg);
  }
  .hl-coverflow-list > input[type="radio"]:checked + .hl-coverflow-item ~ .hl-coverflow-item {
    transform: rotateY(-24deg);
  }
  .hl-coverflow-play {
    font-size: 0.62rem;
    padding: 0.22rem 0.4rem;
  }
  .hl-coverflow-controls label {
    min-width: 1.55rem;
    padding: 0.28rem 0.35rem;
    font-size: 0.65rem;
  }
}

@media (max-width: 360px) {
  .hl-coverflow.is-midi {
    --cf-size: 76px;
    --cf-overlap: -24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hl-coverflow-item,
  .hl-coverflow-cover img,
  .hl-coverflow-name {
    transition: none !important;
  }
}