/* Shared category controls; each page owns its own selected category. */
:root {
  --filter-text: var(--color-text-secondary);
  --filter-text-hover: var(--color-text-primary);
  --filter-active-text: var(--card-link-color);
  --filter-focus-ring: var(--color-accent);
  --filter-transition-duration: 180ms;
  --filter-transition-easing: cubic-bezier(0.2, 0.7, 0.2, 1);
  --filter-hint-width: 32px;
}

.category-filter-scroll {
  position: relative;
  display: flex;
  justify-content: flex-end;
  width: 100%;
  min-width: 0;
  margin-bottom: 24px;
}

.category-filter-bar {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 2px;
  width: max-content;
  max-width: 100%;
  min-width: 0;
  margin: 0;
  padding: 3px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  background: var(--color-filter-bg);
  border-radius: 6px;
}

.category-filter-bar::-webkit-scrollbar {
  display: none;
}

.category-filter-bar > li {
  display: flex;
  flex: none;
  margin: 0;
  padding: 0;
}

.category-filter-bar .category-filter {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin: 0;
  padding: 6px 14px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--filter-text);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  box-shadow: none;
  cursor: pointer;
  transition: color var(--filter-transition-duration) var(--filter-transition-easing),
    background-color var(--filter-transition-duration) var(--filter-transition-easing),
    box-shadow var(--filter-transition-duration) var(--filter-transition-easing);
}

@media (hover: hover) and (pointer: fine) {
  .category-filter-bar .category-filter:hover {
    color: var(--filter-text-hover);
    background: var(--filter-hover-bg);
  }
}

.category-filter-bar .category-filter[aria-pressed="true"] {
  color: var(--filter-active-text);
  background: var(--color-filter-active);
  box-shadow: var(--filter-active-shadow);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.category-filter-bar .category-filter:focus-visible {
  outline: 2px solid var(--filter-focus-ring);
  outline-offset: -2px;
}

.category-filter-bar .category-filter:disabled {
  opacity: 0.5;
  cursor: default;
}

.category-filter-scroll::after {
  content: "";
  position: absolute;
  inset: 0 0 0 auto;
  width: var(--filter-hint-width);
  background: linear-gradient(to right, transparent, var(--color-filter-bg) 90%);
  pointer-events: none;
  opacity: 0;
}

.category-filter-scroll.has-overflow:not(.at-end)::after {
  opacity: 1;
}

@media (max-width: 768px) {
  .category-filter-bar {
    width: 100%;
    padding-right: var(--filter-hint-width);
  }
}

@media (prefers-reduced-motion: reduce) {
  .category-filter-bar .category-filter {
    transition: none;
  }
}