/* ==========================================================================
   Hub Filter Component — shared, tokenized
   --------------------------------------------------------------------------
   The faceted filter + results-grid UI used by every content hub
   (supplement-facts, skin-health, sleep-recovery, ...). Extracted verbatim
   from the original supplement-facts inline styles, with every accent colour
   promoted to a CSS custom property so each hub can re-skin it while keeping
   identical structure and behaviour (filter.js is unchanged per hub).

   THEME CONTRACT — a host page overrides any of these in its own :root to
   re-colour the component. Defaults below reproduce the original sky theme,
   so linking this file with no overrides is a drop-in for supplement-facts.

     --hub-accent            primary accent (links / "+ More")
     --hub-accent-soft       accent tint (selected / hover backgrounds)
     --hub-accent-border     accent border on interactive elements
     --hub-accent-ink        accent text on tinted backgrounds
     --hub-accent-ink-strong stronger accent text (counts, hovers)
     --hub-accent-hover      darker tint used on :hover of active elements
     --hub-thumb-gradient    placeholder gradient behind card thumbnails

   Structural tokens (--surface, --surface-soft, --text, --text-soft,
   --muted, --line, --shadow, --radius-xl/lg, --container) are expected from
   the host page / site.css; sensible fallbacks are provided here too.
   ========================================================================== */

:root {
  --hub-accent: #0ea5e9;
  --hub-accent-soft: #e0f2fe;
  --hub-accent-border: #bae6fd;
  --hub-accent-ink: #075985;
  --hub-accent-ink-strong: #0369a1;
  --hub-accent-hover: #bae6fd;
  --hub-thumb-gradient: linear-gradient(135deg, #e2e8f0, #ffffff, #e0f2fe);

  /* Structural fallbacks (host page / site.css normally supply these). */
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --text: #0f172a;
  --text-soft: #475569;
  --muted: #94a3b8;
  --line: #e2e8f0;
  --shadow: 0 12px 34px rgba(15, 23, 42, 0.06);
  --radius-xl: 2rem;
  --radius-lg: 1.4rem;
  --container: 1280px;
}

/* Site-style typography only on the intro block and result cards */
.quick-intro-block h1,
.quick-intro-block h2,
.filters-head h2,
.results-head h2,
.result-card h3 {
  font-family: 'Gilda Display', Georgia, serif;
  font-weight: 500;
}

.quick-intro-block p,
.result-card p {
  font-family: 'Nunito', Arial, sans-serif;
}

.hub-filter button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.page {
  padding: 24px 0 48px;
}

.meta-note {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 0.88rem;
  box-shadow: var(--shadow);
  white-space: nowrap;
}

.quick-route {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: 1.1rem 1.3rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.quick-intro-block {
  padding: 0.15rem 0.1rem;
}

.quick-intro-block h1,
.quick-intro-block h2 {
  margin: 0;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.quick-intro-block p {
  margin: 0.55rem 0 0;
  color: var(--text-soft);
  font-size: 0.98rem;
  line-height: 1.65;
  max-width: 72ch;
}

.quick-shortcut-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.quick-shortcut-label {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  flex: 0 0 auto;
}

.quick-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.quick-btn {
  text-align: left;
  padding: 1rem;
  border-radius: 1rem;
  border: 1px solid var(--line);
  background: var(--surface-soft);
  color: var(--text-soft);
  transition: 0.18s ease;
}

.quick-btn strong {
  display: block;
  color: var(--text);
  font-size: 0.92rem;
  margin-bottom: 0.2rem;
}

.quick-btn span {
  display: block;
  font-size: 0.82rem;
  line-height: 1.5;
}

.quick-btn:hover,
.quick-btn.active {
  border-color: var(--hub-accent-border);
  background: var(--hub-accent-soft);
  color: var(--hub-accent-ink);
  transform: translateY(-1px);
}

.compact-pills .quick-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  min-width: 0;
  max-width: 100%;
  flex: 0 0 auto;
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--hub-accent-border);
  background: var(--surface);
  color: var(--hub-accent-ink);
  transition: 0.18s ease;
  box-shadow: none;
}

.compact-pills .quick-btn strong {
  display: block;
  color: var(--hub-accent-ink);
  font-size: 0.82rem;
  margin: 0;
  line-height: 1.2;
  white-space: normal;
  text-align: center;
}

.compact-pills .quick-btn span {
  display: none;
}

.compact-pills .quick-btn:hover,
.compact-pills .quick-btn.active {
  border-color: var(--hub-accent-border);
  background: var(--hub-accent-soft);
  color: var(--hub-accent-ink);
  transform: none;
}

.layout {
  display: grid;
  grid-template-columns: 390px minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.filters,
.results {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.filters {
  padding: 1.35rem;
  position: sticky;
  top: 16px;
  width: 100%;
  max-width: 390px;
}

.filters-head,
.results-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: nowrap;
  margin-bottom: 1rem;
}

.filters-head > div,
.results-head > div {
  min-width: 0;
  flex: 1 1 auto;
}

.filters-head .reset-btn {
  flex: 0 0 auto;
}

.filters-head h2,
.results-head h2 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.filters-head p,
.results-head p {
  margin: 0.25rem 0 0;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.7;
}

.reset-btn,
.sort-btn {
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text-soft);
  font-size: 0.82rem;
  font-weight: 600;
}

.reset-btn:hover,
.sort-btn:hover {
  border-color: var(--hub-accent-border);
  color: var(--hub-accent-ink);
}

.sort-btn.is-active {
  background: var(--hub-accent-soft);
  border-color: var(--hub-accent-border);
  color: var(--hub-accent-ink);
}

.sort-btn.is-active:hover {
  background: var(--hub-accent-hover);
  border-color: var(--hub-accent-border);
  color: var(--hub-accent-ink);
}

/* Pagination */
.results-pager {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin: 1.5rem 0 0.5rem;
}

.results-pager:empty {
  display: none;
}

.pager-btn {
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text-soft);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: 0.18s ease;
}

.pager-btn:hover:not(:disabled):not(.is-active) {
  border-color: var(--hub-accent-border);
  color: var(--hub-accent-ink);
}

.pager-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pager-btn.is-active {
  background: var(--hub-accent-soft);
  border-color: var(--hub-accent-border);
  color: var(--hub-accent-ink);
}

.pager-ellipsis {
  color: var(--muted);
  padding: 0 0.2rem;
  font-weight: 600;
}

/* Active reset — when at least one filter is selected */
.reset-btn.is-active {
  background: var(--hub-accent-soft);
  border-color: var(--hub-accent-border);
  color: var(--hub-accent-ink);
}

.reset-btn.is-active:hover {
  background: var(--hub-accent-hover);
  border-color: var(--hub-accent-border);
  color: var(--hub-accent-ink);
}

.filter-block + .filter-block {
  margin-top: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}

.filter-block-title {
  margin: 0 0 0.7rem;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.chip {
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
  color: var(--text-soft);
  font-size: 0.82rem;
  font-weight: 600;
  transition: 0.18s ease;
}

.chip.selected {
  border-color: var(--hub-accent-border);
  background: var(--hub-accent-soft);
  color: var(--hub-accent-ink);
}

@media (hover: hover) {
  .chip:hover:not(.disabled) {
    border-color: var(--hub-accent-border);
    background: var(--hub-accent-soft);
    color: var(--hub-accent-ink);
  }
}

.chip.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.chip-count {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  margin-left: 0.28rem;
}

.chip.selected .chip-count {
  color: var(--hub-accent-ink-strong);
}

.more-btn {
  display: none;
  margin-top: 0.7rem;
  padding: 0.35rem 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--hub-accent);
  letter-spacing: 0.01em;
}

.more-btn:hover {
  color: var(--hub-accent-ink-strong);
  text-decoration: underline;
}

.filter-search-wrap {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 0.9rem;
  margin-bottom: 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  transition: 0.18s ease;
}

.filter-search-wrap:focus-within {
  border-color: var(--hub-accent-border);
  background: var(--surface);
}

.filter-search-icon {
  font-size: 0.95rem;
  opacity: 0.7;
}

.filter-search {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font: inherit;
  font-size: 0.92rem;
  color: var(--text);
  min-width: 0;
}

.filter-search::placeholder {
  color: var(--muted);
}

.results {
  padding: 1.35rem;
  min-width: 0;
}

.results-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.sort-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.active-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--hub-accent-border);
  background: var(--hub-accent-soft);
  color: var(--hub-accent-ink);
  font-size: 0.82rem;
  font-weight: 700;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.result-card {
  display: block;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: 0.18s ease;
  text-decoration: none;
  color: inherit;
}

.result-card:hover {
  border-color: var(--hub-accent-border);
  transform: translateY(-1px);
}

.result-thumb {
  position: relative;
  height: 170px;
  background: var(--hub-thumb-gradient);
}

.result-body {
  padding: 1rem;
}

.tag-row {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  display: inline-flex;
  padding: 0.38rem 0.72rem;
  border-radius: 999px;
  border: 1px solid var(--hub-accent-border);
  background: var(--hub-accent-soft);
  color: var(--hub-accent-ink);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.result-card h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.25;
  letter-spacing: -0.03em;
}

.result-card p {
  margin: 0.65rem 0 0;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.75;
}

.card-footer {
  margin-top: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.active-pill span {
  font-size: 0.9rem;
  line-height: 1;
  opacity: 0.7;
}

.active-pill:hover {
  background: var(--hub-accent-hover);
}

.loading-note {
  grid-column: 1 / -1;
  color: var(--text-soft);
  font-size: 0.95rem;
  padding: 1rem 0;
}

@media (max-width: 1180px) {
  .layout {
    grid-template-columns: 360px minmax(0, 1fr);
  }

  .filters {
    max-width: 360px;
  }
}

@media (max-width: 980px) {
  .results-grid {
    grid-template-columns: 1fr;
  }

  .layout {
    grid-template-columns: 340px minmax(0, 1fr);
  }

  .filters {
    max-width: 340px;
  }
}

@media (max-width: 760px) {
  .page {
    padding: 14px 0 32px;
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .filters {
    position: static;
    max-width: none;
    padding: 0.85rem 0.9rem 0.9rem;
    border-radius: 1.2rem;
    order: 1;
  }

  .results {
    order: 2;
    padding: 0.85rem 0.9rem 1rem;
    border-radius: 1.2rem;
  }

  .filter-search-wrap {
    padding: 0.45rem 0.75rem;
    margin-bottom: 0.7rem;
  }

  .filter-search {
    font-size: 0.85rem;
  }

  .filters-head {
    margin-bottom: 0.75rem;
    gap: 0.6rem;
    align-items: center;
  }

  .filters-head h2 {
    font-size: 1.2rem;
  }

  .filters-head p {
    display: none;
  }

  .reset-btn {
    padding: 0.28rem 0.65rem;
    font-size: 0.72rem;
  }

  .filter-block + .filter-block {
    margin-top: 0.65rem;
    padding-top: 0.65rem;
  }

  .filter-block-title {
    margin-bottom: 0.45rem;
    font-size: 0.68rem;
    letter-spacing: 0.14em;
  }

  .chips {
    gap: 0.4rem;
  }

  .chip {
    padding: 0.3rem 0.6rem;
    font-size: 0.72rem;
    border-radius: 999px;
  }

  .chip-count {
    font-size: 0.7rem;
    margin-left: 0.2rem;
  }

  .more-btn {
    display: inline-flex;
    align-items: center;
    margin-top: 0;
    padding: 0.3rem 0.1rem;
    font-size: 0.76rem;
    align-self: center;
  }

  /* Progressive disclosure */
  .filter-block .chip.mobile-hideable {
    display: none;
  }

  .filter-block.expanded .chip.mobile-hideable {
    display: inline-flex;
  }

  /* Hide Jump In shortcuts on mobile to reclaim above-the-fold space */
  .quick-shortcut-row {
    display: none;
  }

  /* Quick-route top section */
  .quick-route {
    padding: 0.85rem 0.9rem;
    gap: 0.6rem;
    border-radius: 1.2rem;
  }

  .quick-intro-block h1,
  .quick-intro-block h2 {
    font-size: 1.7rem;
  }

  .quick-intro-block p {
    margin-top: 0.35rem;
    font-size: 0.82rem;
    line-height: 1.5;
  }

  .quick-shortcut-label {
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    width: 100%;
  }

  /* "Jump in" pills — wrap onto multiple rows instead of horizontal scroll */
  .quick-grid.compact-pills {
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0;
    padding: 0;
    overflow: visible;
  }

  .compact-pills .quick-btn {
    padding: 0.3rem 0.65rem;
    white-space: nowrap;
  }

  .compact-pills .quick-btn strong {
    font-size: 0.72rem;
  }

  /* Results & cards */
  .results-head {
    margin-bottom: 0.7rem;
  }

  .results-head h2 {
    font-size: 1.05rem;
  }

  .results-head p {
    font-size: 0.8rem;
    margin-top: 0.15rem;
  }

  .results-toolbar {
    gap: 0.5rem;
    margin-bottom: 0.8rem;
  }

  .active-pill {
    padding: 0.28rem 0.55rem;
    font-size: 0.7rem;
  }

  .sort-btn {
    padding: 0.28rem 0.65rem;
    font-size: 0.72rem;
  }

  .results-grid {
    gap: 0.7rem;
  }

  .result-thumb {
    height: 110px;
  }

  .result-body {
    padding: 0.7rem 0.8rem 0.8rem;
  }

  .result-card h3 {
    font-size: 0.98rem;
    line-height: 1.2;
  }

  .result-card p {
    margin: 0.35rem 0 0;
    font-size: 0.8rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .tag-row {
    top: 0.5rem;
    left: 0.5rem;
    gap: 0.3rem;
  }

  .tag {
    padding: 0.25rem 0.5rem;
    font-size: 0.62rem;
    letter-spacing: 0.06em;
  }
}

@media (max-width: 520px) {
  .quick-intro-block h1,
  .quick-intro-block h2 {
    font-size: 1.5rem;
  }
}

/* ==========================================================================
   Empty-hub state
   --------------------------------------------------------------------------
   A hub whose baked catalog currently has zero live articles collapses the
   full filter/results chrome and shows a single tasteful placeholder instead.
   filter.js adds `hub-empty` to <body> when `state.allItems.length === 0`, so
   the moment an article is tagged into the hub and re-baked, the normal
   filter UI returns automatically with no HTML change.
   ========================================================================== */
.hub-empty-state {
  display: none;
}

body.hub-empty .quick-route,
body.hub-empty .filters,
body.hub-empty .results-head,
body.hub-empty .results-toolbar,
body.hub-empty #results-grid,
body.hub-empty .results-pager {
  display: none;
}

body.hub-empty .layout {
  display: block;
}

body.hub-empty .hub-empty-state {
  display: block;
}

.hub-empty-state {
  max-width: 680px;
  margin: 8px auto 0;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--hub-accent-border);
  border-radius: var(--radius-xl);
  padding: 3rem 2.4rem;
  box-shadow: var(--shadow);
}

.hub-empty-state .hub-empty-badge {
  display: inline-block;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hub-accent-ink);
  background: var(--hub-accent-soft);
  border: 1px solid var(--hub-accent-border);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  margin-bottom: 1.1rem;
}

.hub-empty-state h2 {
  font-family: 'Gilda Display', Georgia, serif;
  font-weight: 500;
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  color: var(--text);
  margin: 0 0 0.7rem;
}

.hub-empty-state p {
  font-family: 'Nunito', Arial, sans-serif;
  color: var(--text-soft);
  font-size: 0.95rem;
  line-height: 1.75;
  margin: 0 auto 1.5rem;
  max-width: 52ch;
}

.hub-empty-state .hub-empty-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  background: var(--hub-accent);
  border: 1px solid var(--hub-accent);
  border-radius: 999px;
  padding: 0.7rem 1.4rem;
  transition: filter 0.15s ease;
}

.hub-empty-state .hub-empty-cta:hover {
  filter: brightness(0.94);
}