/* The seven-knob bar lives INLINE in the mix-detail controls area and animates open/closed in place
   (lava reframe §7b) — NOT a popover or drawer. Collapsed, it has zero size and is fully transparent;
   the @Expanded flag (mirrored to the .is-expanded class) transitions it open. We animate max-width +
   max-height + opacity + transform together so the bar reads as the controls growing in place rather
   than a panel popping in. Closed state is pointer-events:none + visibility:hidden so collapsed knobs
   are not focusable or hit-testable. */
.mix-visualizer-controls-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: flex-end;
    gap: 0.85rem 1rem;

    /* Collapsed: zero footprint, slid up toward the toggle, transparent. */
    max-width: 0;
    max-height: 0;
    opacity: 0;
    transform: translateY(-8px);
    overflow: hidden;
    visibility: hidden;
    pointer-events: none;

    /* NowPlaying glass surface (§7e): translucent dark shim, soft blur, rounded, secondary-tinted
       hairline — matches the session-hero overlay family. Padding animates in with the size. */
    padding: 0;
    border-radius: 10px;
    background: rgba(13, 27, 42, 0.55);
    border: 1px solid color-mix(in srgb, var(--mud-palette-secondary) 22%, transparent);
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);

    transition:
        max-width 0.32s cubic-bezier(0.22, 0.61, 0.36, 1),
        max-height 0.32s cubic-bezier(0.22, 0.61, 0.36, 1),
        opacity 0.24s ease,
        padding 0.32s cubic-bezier(0.22, 0.61, 0.36, 1),
        transform 0.32s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.mix-visualizer-controls-bar.is-expanded {
    max-width: 640px;
    max-height: 420px;
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
    padding: 0.85rem 1rem;
}

/* One control: a RadialKnob with its Material icon caption underneath. RadialKnob has no icon slot, so
   the icon rides adjacent (§7d). Center the pair so the seven read as a tidy bar. */
.mix-visualizer-control {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

/* The caption icon is a MudIcon (a Razor component), so Blazor CSS isolation does not stamp the scope
   attribute onto its element — reach it with ::deep. Tinted to the secondary accent and the
   overlay-label opacity so it matches the session-hero NowPlaying captions (§7e). */
.mix-visualizer-control ::deep .mix-visualizer-control-icon {
    color: var(--mud-palette-secondary);
    opacity: 0.78;
}