/* BMD Motion 1.1.0. Content is readable before, during and without JavaScript.
 * No page/player transforms, viewport locks, scroll interception or hidden reveals. */
html[data-bmd-motion-engine="gsap"] .hm48 :is(.hm48-card,.hm48-playlist-tile,.hm48-stories article) {
  transition: border-color .18s ease, box-shadow .18s ease;
}
html[data-bmd-motion-engine="gsap"] :is(.hm48-button,.hm48-icon-button,.bh48-icon,.bf-button):focus-visible {
  outline: 2px solid var(--bh-accent, #f5b434);
  outline-offset: 4px;
}
html[data-bmd-motion-engine="gsap"] .hm48 :is(.hm48-card,.hm48-playlist-tile):focus-within {
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--bh-accent, #f5b434) 55%, transparent);
}
@media (hover:hover) and (pointer:fine) and (prefers-reduced-motion:no-preference) {
  html[data-bmd-motion-engine="gsap"]:not([data-bmd-motion="off"]) .hm48 :is(.hm48-card,.hm48-playlist-tile):hover {
    border-color: color-mix(in srgb, var(--bh-accent, #f5b434) 42%, transparent);
    box-shadow: 0 10px 28px rgb(0 0 0 / .15);
  }
}
/* Short phone viewports retain a scrollable native dialog and visible controls. */
@media (max-height: 520px) and (orientation: landscape) {
  html[data-bmd-motion-engine="gsap"] :is(#bmdMenu48,#bmdCommandSearchV16) {
    max-block-size: calc(100dvh - 16px);
    max-block-size: calc(100svh - 16px);
  }
  html[data-bmd-motion-engine="gsap"] #bmdMenu48 .bh48-drawer-scroll {
    min-block-size: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
  }
}
html[data-bmd-motion="off"] :is(.hm48-card,.hm48-playlist-tile),
html[data-bmd-gsap-state="reduced"] :is(.hm48-card,.hm48-playlist-tile) { transition: none !important; }
@media (prefers-reduced-motion:reduce) {
  html[data-bmd-motion-engine="gsap"] :is(.hm48-card,.hm48-playlist-tile) { transition: none !important; }
}

/* Selection is taken from real route/tab ARIA; this layer never receives input. */
[data-bmd-motion-rail="1"] { position: relative; }
[data-bmd-motion-rail="1"] > .bmd-motion-rail {
  position: absolute;
  inset: auto auto 1px 0;
  inline-size: 1px;
  block-size: 3px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: var(--bh-accent, var(--bmd-accent, #f5b434));
  transform-origin: left center;
  pointer-events: none;
  z-index: 2;
}
.bmd-motion-rail[hidden] { display: none !important; }

/* At most one bounded decorative surface per page. Radial gradients are static
 * bitmaps; only their transform/opacity animates. No canvas or sensor access. */
[data-bmd-motion-surface="1"] { position: relative; isolation: isolate; }
.bmd-motion-ambient {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: inherit;
  pointer-events: none;
  z-index: -1;
  contain: paint;
}
.bmd-motion-ambient > i {
  position: absolute;
  inline-size: min(58%, 280px);
  aspect-ratio: 1;
  inset: -15% auto auto -6%;
  background: radial-gradient(circle, var(--bh-accent, #f5b434), transparent 68%);
  opacity: .10;
  animation: bmd-ambient-drift 16s ease-in-out infinite alternate;
  animation-play-state: paused;
}
.bmd-motion-ambient > i + i {
  inset: auto -4% -20% auto;
  background: radial-gradient(circle, #7398c9, transparent 68%);
  animation-delay: -7s;
  animation-direction: alternate-reverse;
}
html[data-bmd-gsap-state="active"] .bmd-motion-ambient > i { animation-play-state: running; }
@keyframes bmd-ambient-drift {
  from { transform: translate3d(0, 0, 0); opacity: .08; }
  to { transform: translate3d(22px, 14px, 0); opacity: .16; }
}

/* Artwork moves inside its existing clip; text and action hit areas stay put. */
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  html[data-bmd-gsap-state="active"] .hm48-card-art img {
    transition: transform .32s cubic-bezier(.2,.75,.25,1);
  }
  html[data-bmd-gsap-state="active"] .hm48-card:is(:hover,:focus-within) .hm48-card-art img {
    transform: scale(1.035);
  }
}

/* Existing bars already use the player's verified data-signal, including
 * buffering and muted states. Pause decoration without touching that signal. */
html[data-bmd-motion="off"] .bmd-playback-bars i,
html[data-bmd-gsap-state="reduced"] .bmd-playback-bars i,
html[data-bmd-gsap-state="inactive"] .bmd-playback-bars i {
  animation-play-state: paused !important;
}
html[data-bmd-motion="off"] .bmd-motion-ambient > i { animation: none; }
@media (prefers-reduced-motion: reduce) {
  .bmd-motion-ambient > i { animation: none; }
  html[data-bmd-motion-engine="gsap"] .hm48-card-art img { transition: none; }
}
@media (forced-colors: active) {
  .bmd-motion-ambient { display: none; }
  [data-bmd-motion-rail="1"] > .bmd-motion-rail { background: Highlight; }
}