/* Type sizes are rem (root 16px) so they scale with browser zoom and user font
 * settings, per the brand reference's "use relative units" note.
 *
 * CGD branding — palette and variable names from cgd-brand-reference.md in the
 * CGD Interactive Toolkit, which supersedes the derived colours previously used
 * here (#1A8A9E, #CC8E00, #5DBDD0, #5B8C96, #A8D5DB, #D6EAED — the local
 * cgd-general/CGD-branding.md already flagged those as unofficial).
 *
 * Ink: the brand reference assigns Dark Gray to body text and Teal Black to
 * chart text. Almost everything here is chart furniture, so Teal Black is the
 * primary ink and Dark Gray the secondary.
 */
:root {
  --cgd-teal: #0B4C5B;
  --cgd-gold: #FFB52C;
  --cgd-light-teal: #006970;
  --cgd-blue: #2D99B5;
  --cgd-teal-gray: #85A5AD;
  --cgd-light-gray: #DFE0E2;
  --cgd-cream: #F3F6F7;
  --cgd-red: #D15553;
  --ink: #1A272A;
  --ink-secondary: #394649;
  --font-body: "sofia-pro", "Sofia Pro", "Segoe UI", system-ui, -apple-system, sans-serif;
}

/* Reset per the coding standard. overflow-x rather than overflow, so a failure of
 * the iframe resize script shows as a scrollbar instead of silently clipping. */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  overflow-x: hidden;
  background: transparent;   /* host page controls the backdrop */
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.4;
}

.chart-app {
  max-width: 860px;
  margin: 0 auto;
  padding: 16px 12px 20px;
}

.chart-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cgd-teal);
  margin: 0 0 4px;
}

.chart-subtitle {
  font-size: 0.85rem;
  color: var(--ink-secondary);
  margin: 0 0 16px;
}

/* ---- controls -------------------------------------------------------- */
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  align-items: flex-end;
  margin-bottom: 14px;
}

.control { display: flex; flex-direction: column; gap: 6px; }

.control-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink-secondary);
}

.control select {
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--ink);
  padding: 6px 8px;
  border: 1px solid var(--cgd-teal-gray);
  border-radius: 6px;
  background: #fff;
}
.control select:focus-visible,
.switch input:focus-visible + .switch-track {
  outline: 2px solid var(--cgd-light-teal);
  outline-offset: 2px;
}

/* toggle switch */
.control-toggle { cursor: pointer; }
.switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.switch input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.switch-track {
  position: absolute; inset: 0;
  background: var(--cgd-light-gray);
  border-radius: 12px;
  transition: background 0.15s;
  pointer-events: none;
}
.switch-track::after {
  content: "";
  position: absolute; top: 3px; left: 3px;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.15s;
  box-shadow: 0 1px 2px rgba(0,0,0,0.25);
}
.switch input:checked + .switch-track { background: var(--cgd-teal); }
.switch input:checked + .switch-track::after { transform: translateX(20px); }

/* dual-handle year slider */
.control-years { flex: 1 1 260px; min-width: 240px; }
.year-readout { text-transform: none; font-weight: 600; color: var(--cgd-teal); margin-left: 6px; font-size: 0.8125rem; }

.year-reset {
  font-family: inherit;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--cgd-light-teal);
  background: none;
  border: 1px solid var(--cgd-teal-gray);
  border-radius: 5px;
  padding: 1px 6px;
  margin-left: 8px;
  cursor: pointer;
}
.year-reset:hover { background: var(--cgd-cream); color: var(--cgd-teal); }
.year-reset:disabled { color: var(--cgd-teal-gray); border-color: var(--cgd-light-gray); cursor: default; background: none; }

.range-slider { position: relative; height: 24px; }
.range-track, .range-fill {
  position: absolute; top: 10px; height: 4px; border-radius: 2px;
  pointer-events: none;
}
.range-track { left: 0; right: 0; background: var(--cgd-light-gray); }
.range-fill { background: var(--cgd-light-teal); }

.range-slider input[type="range"] {
  position: absolute; left: 0; top: 0;
  width: 100%; height: 24px;
  margin: 0;
  -webkit-appearance: none;
  appearance: none;
  background: none;
  pointer-events: none;
}
.range-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  pointer-events: auto;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--cgd-teal);
  cursor: grab;
}
.range-slider input[type="range"]::-moz-range-thumb {
  pointer-events: auto;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--cgd-teal);
  cursor: grab;
}
.range-slider input[type="range"]:focus-visible::-webkit-slider-thumb { outline: 2px solid var(--cgd-gold); outline-offset: 2px; }
.range-slider input[type="range"]:focus-visible::-moz-range-thumb { outline: 2px solid var(--cgd-gold); outline-offset: 2px; }

.range-ends {
  display: flex; justify-content: space-between;
  font-size: 0.72rem; color: var(--ink-secondary);
  margin-top: 2px;
}

/* ---- country picker --------------------------------------------------- */
.custom-groups { margin: 2px 0 10px; }

.add-group-btn, .picker-footer button {
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #fff;
  background: var(--cgd-light-teal);
  border: none;
  border-radius: 6px;
  padding: 7px 12px;
  cursor: pointer;
}
.add-group-btn:hover, .picker-footer button:hover { background: var(--cgd-teal); }
.add-group-btn:disabled, .picker-footer button:disabled {
  background: var(--cgd-light-gray); cursor: not-allowed;
}
.picker-footer button.secondary {
  background: none;
  color: var(--cgd-light-teal);
  border: 1px solid var(--cgd-teal-gray);
}
.picker-footer button.secondary:hover { background: var(--cgd-cream); color: var(--cgd-teal); }

.picker {
  border: 1px solid var(--cgd-teal-gray);
  border-radius: 8px;
  padding: 10px;
  max-width: 460px;
  background: #fff;
}
.picker-controls { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; flex-wrap: wrap; }
.picker-controls input[type="search"] {
  flex: 1 1 160px;
  font-family: inherit; font-size: 0.85rem;
  padding: 6px 8px;
  border: 1px solid var(--cgd-teal-gray);
  border-radius: 6px;
}
.picker-groupby { font-size: 0.78rem; color: var(--ink-secondary); display: inline-flex; align-items: center; gap: 6px; }
.picker-groupby select {
  font-family: inherit; font-size: 0.8125rem;
  padding: 4px 6px;
  border: 1px solid var(--cgd-teal-gray);
  border-radius: 6px;
  background: #fff;
}

.picker-list {
  max-height: 260px;
  overflow-y: auto;
  border: 1px solid var(--cgd-light-gray);
  border-radius: 6px;
  padding: 4px 0;
}
.picker-bucket, .picker-item {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 10px;
  font-size: 0.85rem;
  cursor: pointer;
}
.picker-bucket {
  font-weight: 700;
  color: var(--cgd-teal);
  background: var(--cgd-cream);
  position: sticky; top: 0;
}
.picker-item { padding-left: 26px; }
.picker-item:hover { background: var(--cgd-cream); }
.picker-empty { padding: 10px; color: var(--ink-secondary); font-size: 0.8125rem; }

.picker-footer {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  margin-top: 10px;
}
.picker-count { font-size: 0.78rem; color: var(--ink-secondary); min-width: 78px; }
.picker-footer input[type="text"] {
  flex: 1 1 140px;
  font-family: inherit; font-size: 0.85rem;
  padding: 6px 8px;
  border: 1px solid var(--cgd-teal-gray);
  border-radius: 6px;
}

/* added groups: name, member count, expandable country list */
.group-list { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; max-width: 560px; }
.group-chip {
  border: 1px solid var(--cgd-light-gray);
  border-radius: 6px;
  padding: 4px 6px 4px 8px;
  background: var(--cgd-cream);
}
.group-chip-head { display: flex; align-items: center; gap: 8px; }
.group-view {
  flex: 1;
  text-align: left;
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--cgd-teal);
  background: none;
  border: none;
  padding: 2px 0;
  cursor: pointer;
}
.group-view:hover { color: var(--cgd-light-teal); }
.group-remove {
  font-family: inherit;
  font-size: 0.9375rem;
  line-height: 1;
  color: var(--ink-secondary);
  background: none;
  border: none;
  padding: 0 4px;
  cursor: pointer;
}
.group-remove:hover { color: var(--cgd-red); }
.group-members {
  font-size: 0.75rem;
  color: var(--ink-secondary);
  padding: 4px 2px 2px;
  max-height: 120px;
  overflow-y: auto;
}

.row-remove {
  fill: var(--ink-secondary);
  font-size: 0.6875rem;
  font-family: var(--font-body);
  cursor: pointer;
}
.row-remove:hover, .row-remove:focus { fill: var(--cgd-red); }
.row-remove:focus-visible { outline: 2px solid var(--cgd-light-teal); outline-offset: 3px; }

/* ---- legend ---------------------------------------------------------- */
.legend {
  display: flex; flex-wrap: wrap;
  gap: 6px 18px;
  margin: 4px 0 2px;
  font-size: 0.8125rem;
}
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-item.inactive { opacity: 0.38; }
.legend-swatch { width: 12px; height: 12px; border-radius: 50%; flex: none; }
.legend-swatch.gmst {
  border-radius: 0; background: none; position: relative; width: 14px; height: 14px;
}
.legend-swatch.gmst::before, .legend-swatch.gmst::after {
  content: ""; position: absolute; background: var(--ink);
}
.legend-swatch.gmst::before { left: 6px; top: 0; width: 2.5px; height: 14px; }
.legend-swatch.gmst::after  { top: 6px; left: 0; height: 2.5px; width: 14px; }
.legend-note { font-size: 0.72rem; color: var(--ink-secondary); }

/* ---- chart ----------------------------------------------------------- */
.chart-wrap { position: relative; }
#chart { width: 100%; height: auto; display: block; }

.grid-line { stroke: var(--cgd-light-gray); stroke-width: 1; }
/* Brand hierarchy: tick values Regular in Teal Black; axis title Medium in Teal. */
.axis-label { fill: var(--ink); font-size: 0.75rem; font-family: var(--font-body); }
.axis-title { fill: var(--cgd-teal); font-size: 0.875rem; font-weight: 500; font-family: var(--font-body); }
.row-label { fill: var(--ink); font-size: 0.875rem; font-weight: 600; font-family: var(--font-body); }
.connector { stroke: var(--cgd-teal-gray); stroke-width: 2.5; stroke-linecap: round; }
.dot { stroke: #fff; stroke-width: 1.5; }
.dot-hit { fill: transparent; cursor: pointer; }
/* Focus on a hit band is shown as a ring drawn on the mark itself (see
 * renderChart), not as an outline around the tall, invisible band. */
.dot-hit:focus-visible { outline: none; }
.focus-ring { fill: none; stroke: var(--cgd-light-teal); stroke-width: 2.5; pointer-events: none; }
.dot.lifted { stroke: var(--ink); stroke-width: 2; }
.gmst-mark { stroke: var(--ink); stroke-width: 2.5; stroke-linecap: round; }

/* tooltip */
.tooltip {
  position: absolute;
  pointer-events: none;
  background: #fff;
  border: 1px solid var(--cgd-teal-gray);
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(11, 76, 91, 0.18);
  padding: 7px 10px;
  font-size: 0.78rem;
  max-width: 240px;
  z-index: 5;
}
.tooltip .tt-row { display: flex; align-items: baseline; gap: 6px; white-space: nowrap; }
.tooltip .tt-key { width: 12px; height: 3px; border-radius: 1.5px; flex: none; align-self: center; }
.tooltip .tt-value { font-size: 0.875rem; font-weight: 700; color: var(--ink); }
.tooltip .tt-label { color: var(--ink-secondary); }
.tooltip .tt-note { color: var(--ink-secondary); font-size: 0.72rem; margin-top: 3px; }

/* ---- footnote, table ------------------------------------------------- */
/* Notes: Sofia Pro Light Italic per the brand reference. */
.footnote {
  font-size: 0.75rem;
  font-weight: 300;
  font-style: italic;
  color: var(--ink);
  margin: 10px 0 6px;
}

.data-table { font-size: 0.8125rem; margin: 6px 0; }
.data-table summary { cursor: pointer; color: var(--cgd-light-teal); font-weight: 600; }
/* Up to four custom groups make the table wider than a phone viewport; it
 * scrolls inside this wrapper rather than being clipped by body overflow-x. */
.table-scroll { overflow-x: auto; max-width: 100%; -webkit-overflow-scrolling: touch; }
.data-table table { border-collapse: collapse; margin-top: 8px; }
.data-table th, .data-table td {
  text-align: right; padding: 4px 12px;
  border-bottom: 1px solid var(--cgd-light-gray);
}
.data-table th:first-child, .data-table td:first-child { text-align: left; }
.data-table thead th { color: var(--ink-secondary); font-weight: 600; }

.source-line {
  font-size: 0.6875rem;
  font-weight: 300;
  font-style: italic;
  color: var(--ink);
  margin: 10px 0 0;
}

@media (prefers-reduced-motion: reduce) {
  .switch-track, .switch-track::after { transition: none; }
}

@media (max-width: 560px) {
  .controls { gap: 12px 18px; }
  .chart-title { font-size: 1.0625rem; }
  .row-label { font-size: 0.75rem; }
  .axis-title { font-size: 0.75rem; }   /* the full title still fits the 320px plot */
}