/* ============================================================
   v6 AI quick-actions — split button + popover menu
   ============================================================
   Mounted next to the existing #refineBtn in the playback bar.
   Driven by src/ui/AIQuickActions.js.
*/

@layer v6-components {

  /* Visually group the Refine button + chevron toggle into one unit */
  .v6-ai-actions__main {
    border-top-right-radius: 0 !important;
    border-bottom-right-radius: 0 !important;
    margin-right: 0 !important;
  }
  .v6-ai-actions__toggle {
    border-top-left-radius: 0 !important;
    border-bottom-left-radius: 0 !important;
    width: 24px !important;
    min-width: 24px;
    padding: 0 !important;
    margin-left: -1px !important;
    border-left: 1px solid rgba(0, 0, 0, 0.25) !important;
  }
  .v6-ai-actions__toggle:focus-visible {
    z-index: 2;
  }
  .v6-ai-actions__toggle .v6-icon {
    transition: transform var(--duration-fast, 120ms) var(--ease-out-quart);
  }
  .v6-ai-actions__toggle[aria-expanded="true"] .v6-icon {
    transform: rotate(180deg);
  }

  /* ============================================================
     Popover menu
     ============================================================ */
  .v6-ai-actions__menu {
    position: fixed;
    z-index: var(--z-popover, 1000);
    width: 320px;
    padding: 8px;
    background: var(--v6-panel, var(--surface-300, #18181b));
    border: 1px solid var(--v6-border-strong, rgba(255, 255, 255, 0.14));
    border-radius: var(--radius-lg, 8px);
    box-shadow: var(--shadow-4, 0 24px 64px rgba(0,0,0,0.7));

    opacity: 0;
    transform: scale(0.96) translateY(-2px);
    transform-origin: top right;
    transition: opacity var(--duration-fast, 120ms) var(--ease-out-quart),
                transform var(--duration-fast, 120ms) var(--ease-out-quart);
  }
  .v6-ai-actions__menu--visible {
    opacity: 1;
    transform: scale(1) translateY(0);
  }

  .v6-ai-actions__menu-header {
    padding: 6px 8px 10px;
    border-bottom: 1px solid var(--v6-border-faint, rgba(255, 255, 255, 0.04));
    margin-bottom: 8px;
    color: var(--text-secondary, #a1a1aa);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }

  .v6-ai-actions__menu-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
  }

  .v6-ai-action {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: var(--surface-400, #1f1f23);
    border: 1px solid transparent;
    border-radius: var(--radius-sm, 4px);
    color: var(--text-primary, #fafafa);
    cursor: pointer;
    text-align: left;

    transition:
      background var(--duration-fast, 120ms),
      border-color var(--duration-fast, 120ms),
      transform var(--duration-instant, 50ms);
  }
  .v6-ai-action:hover {
    background: var(--surface-500, #27272b);
    border-color: var(--accent-primary, #8b5cf6);
    transform: translateY(-1px);
  }
  .v6-ai-action:active {
    transform: translateY(0);
  }

  .v6-ai-action__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: rgba(139, 92, 246, 0.15);
    border-radius: var(--radius-sm, 4px);
    color: var(--accent-primary, #8b5cf6);
    flex-shrink: 0;
  }

  .v6-ai-action__label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary, #fafafa);
    line-height: 1.2;
  }

  /* Variations gets a featured slot — spans both columns at top */
  .v6-ai-action--variations {
    grid-column: 1 / -1;
    background: linear-gradient(135deg,
      rgba(139, 92, 246, 0.15) 0%,
      rgba(236, 72, 153, 0.10) 100%);
    border-color: rgba(139, 92, 246, 0.30);
  }
  .v6-ai-action--variations:hover {
    background: linear-gradient(135deg,
      rgba(139, 92, 246, 0.22) 0%,
      rgba(236, 72, 153, 0.18) 100%);
    border-color: var(--accent-primary, #8b5cf6);
  }
  .v6-ai-action--variations .v6-ai-action__icon {
    background: linear-gradient(135deg, #a78bfa, #ec4899);
    color: #fff;
  }
  .v6-ai-action--variations .v6-ai-action__label {
    font-weight: 600;
  }

  .v6-ai-actions__menu-footer {
    padding: 10px 8px 4px;
    border-top: 1px solid var(--v6-border-faint, rgba(255, 255, 255, 0.04));
    margin-top: 8px;
    font-size: 11px;
    color: var(--text-muted, #71717a);
    line-height: 1.4;
  }
  .v6-ai-actions__hint strong {
    color: var(--text-secondary, #a1a1aa);
    font-weight: 600;
  }
}

/* The 12 musical axes now live inside the AI menu (v12) — they used to sit in a
   popover whose only trigger was hidden, so the feature was unreachable. These
   rows carry no description line, so they are tightened up to keep the combined
   menu scannable. */
.v6-ai-menu__item--compact {
  padding-top: 7px;
  padding-bottom: 7px;
}