.filter-panel {
  transition: opacity 0.2s ease, transform 0.2s ease;
  outline: none;
}

.filter-panel[hidden] {
  display: none;
}

.filter-panel:not(.show) {
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  max-height: 0;
  overflow: hidden;
  padding: 0;
  border: none;
}

.filter-panel.show {
  opacity: 1;
  transform: translateY(0);
  height: auto;
  overflow: visible;
}

.filter-btn:focus,
.tag-filter-btn:focus,
.btn-header-action:focus,
.btn-input-action:focus,
.btn-send:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(165, 184, 217, 0.35);
}

/* Skip to content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary, #4A6FA5);
  color: white;
  padding: 8px 16px;
  z-index: 9999;
  transition: top 0.3s;
  text-decoration: none;
  border-radius: 0 0 4px 0;
}

.skip-link:focus {
  top: 0;
  outline: none;
  box-shadow: 0 0 0 3px rgba(165, 184, 217, 0.5);
}

/* Keyboard navigation improvements */
.user-item:focus,
.message:focus,
.order-card:focus {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--color-primary, #4A6FA5);
}

/* Focus visible for keyboard users */
:focus-visible {
  outline: 2px solid var(--color-primary, #4A6FA5);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}