:root {
  /* Matches the CalVEX dashboard's purple palette per request; swap these
     for USVEX's own brand color whenever one is finalized. */
  --usvex-purple-light: #c8b8e2;
  --usvex-purple-mid: #CEA9EA;
  --usvex-purple-hover: #B08FD4;
  --usvex-purple-active: #8E6FB0;
  --usvex-purple-deep: #6b558e;
  --usvex-purple-border: rgba(107, 85, 142, 0.35);
  --usvex-border: #e5e7eb;
  --usvex-muted: #6b7280;
  /* Google Fonts stand-ins for a licensed combo we liked (Fieldwork Geo /
     Campaign / OhNo Casual) but can't use directly — see the <link> comment
     in index.html for the full mapping. */
  --usvex-font: "Plus Jakarta Sans", sans-serif;
  /* Same family as the body font, not a separate display face — Fredoka
     read too punchy/rounded for the heading role, so headings instead lean
     on Plus Jakarta Sans's boldest weight (800) at a larger size. */
  --usvex-font-heading: "Plus Jakarta Sans", sans-serif;
  --usvex-font-accent: "Caveat", cursive;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--usvex-font);
  background: #fff;
  color: #111;
}
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

input[type="checkbox"] { accent-color: var(--usvex-purple-active); }
input[type="range"] { accent-color: var(--usvex-purple-deep); }

/* ---- header ---- */
.usvex-header {
  background-color: var(--usvex-purple-light);
  border-bottom: 1px solid var(--usvex-purple-border);
  padding: 0.4rem 1.1rem;
  flex-shrink: 0;
}
.usvex-app-title-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: #000;
  font-family: var(--usvex-font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  cursor: pointer;
}
.usvex-app-title-link:hover { opacity: 0.85; }
.usvex-logo { height: 2.6rem; width: auto; display: block; flex-shrink: 0; }

/* ---- top control bar ---- */
.usvex-topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0.8rem 1.35rem;
  padding: 0.8rem 1.25rem;
  background: var(--usvex-purple-light);
  border-bottom: 1px solid var(--usvex-purple-border);
  flex-shrink: 0;
}
.usvex-control { display: flex; flex-direction: column; }
.usvex-control label {
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  color: #000;
  font-weight: 700;
  margin-bottom: 0.4rem;
  white-space: nowrap;
}
.usvex-control select {
  font-family: var(--usvex-font);
  font-size: 0.875rem;
  padding: 0.42rem 0.55rem;
  border: 1px solid #cfc4e2;
  border-radius: 0.375rem;
  background: #fff;
  min-width: 150px;
  max-width: 260px;
}
.usvex-control select:disabled {
  color: #9aa5b1;
  background: #f2f4f6;
}
.usvex-control-divided {
  border-left: 1px solid var(--usvex-purple-border);
  padding-left: 1.35rem;
}
.usvex-control-slider { flex: 1 1 220px; min-width: 190px; margin-left: auto; }
.usvex-control-slider input[type="range"] { width: 100%; margin: 0.55rem 0 0.3rem; }
#scale_max_value {
  text-transform: none;
  letter-spacing: 0;
  color: var(--usvex-purple-deep);
}

/* ---- collapse toggle (chart controls bar) ---- */
.usvex-bar-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  width: 100%;
  background: var(--usvex-purple-light);
  border: none;
  border-bottom: 1px solid var(--usvex-purple-border);
  padding: 0.5rem 1rem;
  font-family: var(--usvex-font);
  font-weight: 600;
  font-size: 0.85rem;
  color: #000;
  cursor: pointer;
  flex-shrink: 0;
}
.usvex-bar-toggle:hover { background: #DDD0EF; }
.usvex-bar-toggle .caret { transition: transform 0.15s ease; }
.usvex-bar-toggle.closed .caret { transform: rotate(-90deg); }
.usvex-topbar.collapsed { display: none; }

/* ---- layout: sidebar (Overall/subcategory toggles + Location) + main ---- */
.usvex-body {
  display: flex;
  /* stretch (the default) makes the sidebar match the taller main column's
     height, so its purple background runs the full page instead of
     stopping wherever the sidebar's own (shorter) content ends */
  align-items: stretch;
  /* fills whatever viewport height header/topbar don't use (body is a flex
     column with min-height: 100vh), so on short pages the sidebar/main
     columns extend to the bottom of the screen instead of leaving a white
     gap below them */
  flex: 1 1 auto;
}
.usvex-sidebar-wrap {
  display: flex;
  flex-direction: column;
  width: 260px;
  flex-shrink: 0;
  background-color: var(--usvex-purple-light);
  border-right: 1px solid var(--usvex-purple-border);
}
.usvex-sidebar-wrap.collapsed { width: auto; }
.usvex-sidebar-wrap.collapsed .usvex-sidebar { display: none; }
.usvex-sidebar-wrap.collapsed .usvex-bar-toggle { border-bottom: none; }
.usvex-sidebar { padding: 0.75rem 0.8rem 1rem; }
.usvex-sidebar-checks { padding: 0.15rem 0.15rem 0.65rem; }

.usvex-check {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  cursor: pointer;
}

/* accordion via <details> (Location in the sidebar; Notes below the
   Demographic Specifics section) */
.usvex-acc {
  border: 1px solid var(--usvex-purple-border);
  border-radius: 0.375rem;
  margin-bottom: 0.5rem;
  overflow: hidden;
  background-color: var(--usvex-purple-light);
}
.usvex-acc summary {
  list-style: none;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 0.7rem 0.9rem;
  user-select: none;
}
.usvex-acc summary::-webkit-details-marker { display: none; }
.usvex-acc summary::after { content: " \25BE"; float: right; }
.usvex-acc[open] summary { background-color: var(--usvex-purple-mid); }
.usvex-acc[open] summary::after { content: " \25B4"; }
.usvex-acc summary:hover { background-color: #DDD0EF; }
.usvex-acc-body { padding: 0.25rem 0.9rem 0.9rem; }

/* filter groups */
.usvex-filter-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin: 1rem 0 0.35rem;
}
.usvex-filter-group:first-child .usvex-filter-head { margin-top: 0.6rem; }
.usvex-filter-label { font-weight: 600; font-size: 0.92rem; }
.usvex-filter-links a {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--usvex-purple-deep);
  text-decoration: none;
  margin-left: 0.6rem;
}
.usvex-filter-links a:hover { text-decoration: underline; }
.usvex-filter-group .usvex-check {
  font-size: 0.9rem;
  line-height: 1.45;
  margin-bottom: 0.35rem;
}
.usvex-filter-help {
  display: block;
  font-size: 0.78rem;
  color: #3f3a4d;
  margin-top: 0.45rem;
}

.usvex-notes-list {
  font-size: 0.85rem;
  padding-left: 1.1rem;
  color: #222;
  margin: 0.5rem 0 0;
}
.usvex-notes-list li { margin-bottom: 0.3rem; }

.usvex-cite {
  padding: 0.5rem 0.15rem;
  font-size: 0.75rem;
  color: #333;
  line-height: 1.5;
}
.usvex-cite a { color: var(--usvex-purple-deep); }
.usvex-credit {
  margin: 0.5rem 0 0;
  font-size: 0.72rem;
  color: var(--usvex-muted);
}

/* ---- main chart area ---- */
.usvex-main {
  flex: 1 1 auto;
  min-width: 0;
  background: #fff;
  padding: 8px 16px 24px;
}
.usvex-chart { width: 100%; }
.usvex-validation {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--usvex-muted);
  font-size: 1rem;
}
.usvex-footnotes {
  border-top: 1px solid #eef0f3;
  padding: 0.6rem 0.25rem 0.5rem;
}
.usvex-footnotes p {
  margin: 0.25rem 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: #6b7280;
}

/* ---- refine population: filters, moved below the chart instead of a
   persistent sidebar. Collapsed by default — reuses the same
   button+caret toggle as "Chart controls"/"Filters" rather than a new
   pattern, and the bordered-box look of .usvex-acc, so it reads as one
   more collapsible panel consistent with the rest of the page. ---- */
.usvex-refine {
  margin-top: 1.5rem;
  border: 1px solid var(--usvex-purple-border);
  border-radius: 0.375rem;
  overflow: hidden;
  background-color: var(--usvex-purple-light);
}
.usvex-refine-toggle {
  border-bottom: 1px solid var(--usvex-purple-border);
}
.usvex-refine.collapsed .usvex-refine-toggle { border-bottom: none; }
.usvex-refine.collapsed .usvex-refine-body { display: none; }
.usvex-refine-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.15rem 0.75rem;
  text-align: left;
}
.usvex-refine-label {
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #000;
}
.usvex-refine-body { padding: 1.1rem 1rem 0.5rem; background: #fff; }
.usvex-refine-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  margin-bottom: 1rem;
}
.usvex-refine-grid .usvex-filter-group {
  flex: 1 1 190px;
  max-width: 260px;
}
/* Every group's heading needs the same top margin so headings in the same
   row line up. The :first-child rule above (margin-top: 0.6rem) still does
   real work for the Location accordion in the sidebar, so it can't just be
   deleted — but its 3-class-selector specificity beats a plain
   ".usvex-refine-grid .usvex-filter-head" rule regardless of source order,
   so it was still winning for "Gender" (the grid's actual first child) and
   sitting it lower than "Sexuality"/"Age"/etc. beside it. Repeating the
   :first-child selector here, scoped to the grid, matches that specificity
   and wins. */
.usvex-refine-grid .usvex-filter-head,
.usvex-refine-grid .usvex-filter-group:first-child .usvex-filter-head {
  margin-top: 0;
}

/* ---- responsive ---- */
@media (max-width: 900px) {
  .usvex-control-divided { border-left: none; padding-left: 0; }
  .usvex-control-slider { margin-left: 0; }
  .usvex-control { flex: 1 1 calc(50% - 0.9rem); min-width: 0; }
  .usvex-control select { width: 100%; max-width: none; }
}
@media (max-width: 768px) {
  .usvex-body { flex-direction: column; }
  .usvex-sidebar-wrap {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--usvex-purple-border);
  }
  .usvex-app-title-link { font-size: 1rem; }
  .usvex-logo { height: 1.9rem; }
  .usvex-refine-grid { gap: 1.25rem 1.5rem; }
  .usvex-refine-grid .usvex-filter-group { flex: 1 1 140px; }
}