/* -- Filter Sidebar (website · Search & Navigation) -----------------------
   Groups detailed filtering controls beside a collection - categories with counts, a price range, colors, rating and availability, each group collapsible. */

@layer components {
  /* every box in the block measures border-box - the same on any page */
  :where(.mk-filter-sidebar, .mk-filter-sidebar *, .mk-filter-sidebar ::before, .mk-filter-sidebar ::after) {
    box-sizing: border-box;
  }

  .mk-filter-sidebar {
    width: 100%;
    max-width: 17rem;
    & form {
      display: grid;
    }
  }
  .mk-filter-sidebar-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding-block-end: 0.75rem;
    & h2 {
      margin: 0;
      font-size: 1rem;
      font-weight: 600;
    }
    & a {
      color: var(--muted-foreground);
      font-size: 0.8125rem;
    }
  }
  .mk-filter-sidebar-group {
    padding-block: 0.875rem;
    border-block-start: 1px solid var(--border);
    & > summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      font-size: 0.875rem;
      font-weight: 600;
      list-style: none;
    }
    & > summary::-webkit-details-marker {
      display: none;
    }
    & > summary::after {
      content: "+";
      color: var(--muted-foreground);
      font-weight: 400;
    }
    &[open] > summary::after {
      content: "−";
    }
    & > summary:focus-visible {
      outline: 2px solid var(--ring);
      outline-offset: 2px;
      border-radius: var(--radius-sm);
    }
    & > div {
      display: grid;
      gap: 0.5rem;
      padding-block-start: 0.75rem;
    }
    & fieldset {
      display: contents;
    }
    & legend {
      position: absolute;
      width: 1px;
      height: 1px;
      overflow: hidden;
      clip-path: inset(50%);
    }
  }
  .mk-filter-sidebar-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    cursor: pointer;
    & small {
      margin-inline-start: auto;
      color: var(--muted-foreground);
      font-size: 0.75rem;
      font-variant-numeric: tabular-nums;
    }
  }
  .mk-filter-sidebar-range {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 0.5rem;
    color: var(--muted-foreground);
    font-size: 0.8125rem;
    & .input {
      height: 2rem;
      font-size: 0.8125rem;
    }
  }
  .mk-filter-sidebar-swatches {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  .mk-filter-sidebar-swatch {
    --mk-swatch: var(--muted);
    position: relative;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    background: var(--mk-swatch);
    box-shadow: inset 0 0 0 1px oklch(0 0 0 / 0.15);
    cursor: pointer;
    & input {
      position: absolute;
      inset: 0;
      margin: 0;
      opacity: 0;
      cursor: pointer;
    }
    &:has(:checked) {
      outline: 2px solid var(--foreground);
      outline-offset: 2px;
    }
    &:has(:focus-visible) {
      outline: 2px solid var(--ring);
      outline-offset: 2px;
    }
  }
  .mk-filter-sidebar-stars {
    color: oklch(0.78 0.16 75);
    letter-spacing: 0.0625rem;
  }
  .mk-filter-sidebar-apply {
    margin-block-start: 1rem;
  }

  /* -- Accessibility ------------------------------------------- */
  @media (forced-colors: active) {
    .mk-filter-sidebar-swatch {
      forced-color-adjust: none;
      border: 1px solid CanvasText;
    }
    .mk-filter-sidebar-swatch:has(:checked) {
      outline-color: Highlight;
    }
  }
}