/* theyield.co.za - institutional dark theme
 *
 * Refreshed 2026-09-14 from the 2026-09-13 override layer. Still an OVERRIDE
 * LAYER: Dash auto-loads every .css in assets/ after Bootstrap SLATE, so deleting
 * this file reverts the look (the new masthead and Curve-tab markup then render
 * as plain Bootstrap).
 *
 * Direction: a bank markets screen, not a consumer app. Deep ink surfaces with a
 * blue cast; one restrained gold for brand and emphasis; blue for interaction;
 * green/red only as reinforcement of an explicit sign. IBM Plex Sans for UI and
 * figures (tabular lining numerals), IBM Plex Mono for timestamps, codes and
 * provenance - loaded from Google Fonts in the index template, so the droplet
 * serves not one byte of it, with system fallbacks that keep the layout stable
 * if the font never arrives.
 *
 * Every text/background pair and every meaningful boundary is checked against
 * WCAG 2.1 arithmetically by production/FlaskApp/contrast_check.py, which gates
 * commits. Chart colours (--ty-series-*, diverging, brand mark) are validated
 * separately for colour-vision deficiency against --ty-chart-surface with the
 * dataviz palette validator: all eight slots pass, worst adjacent CVD delta-E
 * 8.4. assets/curve.js reads these tokens at render time, so page and charts
 * share one source of truth.
 */

:root {
  /* Surfaces: ink with a blue cast, never pure black (borders vanish on it). */
  --ty-bg: #0a0e14;
  --ty-surface: #10161f;
  --ty-surface-2: #161e2a;
  --ty-surface-3: #1c2533;
  --ty-border: #222c3a;           /* decorative hairline between rows */
  --ty-border-2: #67768d;         /* meaningful boundary: inputs, header rules (>= 3:1) */

  /* Text: hierarchy from contrast, not colour. */
  --ty-text: #e6ebf2;
  --ty-text-muted: #a3afbf;
  --ty-text-dim: #8591a3;

  /* Brand gold for identity and emphasis; blue for anything you can press. */
  --ty-brand: #e2b155;
  --ty-brand-strong: #f0c46e;
  --ty-on-brand: #10161f;         /* text on a gold fill: buttons, selected day */
  --ty-accent: #6eb4ff;
  --ty-accent-strong: #9ccbff;

  /* Rate moves. Reinforcement only: every change also carries its sign. */
  --ty-up: #4cc38a;
  --ty-down: #f07a7a;

  /* Charts. Marks have different requirements from type: these sit in the
     dark-mode lightness band and were validated as a set. */
  --ty-chart-surface: #10161f;
  --ty-chart-grid: #1e2733;
  --ty-chart-axis: #3a4656;
  --ty-chart-brand: #c98500;
  --ty-series-1: #3987e5;
  --ty-series-2: #d95926;
  --ty-series-3: #199e70;
  --ty-series-4: #c98500;
  --ty-series-5: #d55181;
  --ty-series-6: #008300;
  --ty-series-7: #9085e9;
  --ty-series-8: #e66767;
  --ty-div-neg: #3987e5;
  --ty-div-mid: #262d38;
  --ty-div-pos: #e66767;

  --ty-radius: 6px;
  --ty-sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI",
             Roboto, Arial, sans-serif;
  --ty-mono: "IBM Plex Mono", ui-monospace, "SF Mono", "Cascadia Mono", Menlo,
             Consolas, monospace;
}

/* ------------------------------------------------------------------ base -- */

html { color-scheme: dark; }

body {
  background: var(--ty-bg);
  color: var(--ty-text);
  font-family: var(--ty-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "tnum" 1, "lnum" 1;
}

.container, .container-fluid {
  max-width: 1560px;
  /* 16px on a phone, up to 40px on a wide desktop. The 16px floor keeps the
     mobile no-horizontal-scroll guarantee. */
  padding-left: clamp(16px, 3vw, 40px);
  padding-right: clamp(16px, 3vw, 40px);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ty-sans);
  color: var(--ty-text);
  letter-spacing: -0.01em;
  font-weight: 600;
}
h1 { font-size: 1.5rem; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }

a { color: var(--ty-accent); text-decoration: none; }
a:hover, a:focus-visible { color: var(--ty-accent-strong); text-decoration: underline; }

hr { border-color: var(--ty-border); opacity: 1; }

code, pre, kbd, samp { font-family: var(--ty-mono); }

/* Visible focus, always - removing focus rings is the commonest restyle regression. */
:focus-visible {
  outline: 2px solid var(--ty-accent);
  outline-offset: 2px;
  border-radius: 3px;
}

::selection { background: rgba(110, 180, 255, 0.28); color: var(--ty-text); }

/* -------------------------------------------------------------- masthead -- */

.ty-masthead {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 20px;
  padding: 18px 0 14px;
}

.ty-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ty-text);
}
.ty-brand:hover, .ty-brand:focus-visible { color: var(--ty-text); text-decoration: none; }

.ty-mark { width: 36px; height: 36px; display: block; flex: none; }

.ty-wordmark {
  font-size: 1.65rem;
  line-height: 1;
  letter-spacing: -0.025em;
  white-space: nowrap;
}
.ty-word-the { font-weight: 400; color: var(--ty-text-muted); }
.ty-word-yield { font-weight: 600; color: var(--ty-text); }

.ty-tagline {
  color: var(--ty-text-dim);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding-left: 20px;
  border-left: 1px solid var(--ty-border-2);
  line-height: 1.3;
}

.ty-header-link {
  margin-left: auto;
  font-size: 0.82rem;
  color: var(--ty-text-muted);
  border: 1px solid var(--ty-border);
  border-radius: 999px;
  padding: 5px 12px;
  white-space: nowrap;
}
.ty-header-link:hover, .ty-header-link:focus-visible {
  color: var(--ty-text);
  border-color: var(--ty-border-2);
  text-decoration: none;
}

@media (max-width: 640px) {
  .ty-masthead { padding: 14px 0 10px; gap: 8px 12px; }
  .ty-wordmark { font-size: 1.4rem; }
  .ty-mark { width: 30px; height: 30px; }
  .ty-tagline { flex-basis: 100%; order: 3; padding-left: 0; border-left: 0; }
  .ty-header-link { margin-left: auto; }
}

/* --------------------------------------------------------------- tab bar -- */
/* Sticky: the Curve and Namibia tabs are long, and losing the navigation after
   one screen of scrolling is the commonest complaint about tabbed pages. */

.ty-tabs > .nav-tabs {
  position: sticky;
  top: 0;
  z-index: 6;
  gap: 2px;
  margin-bottom: 20px;
  background: var(--ty-bg);
  border-bottom: 1px solid var(--ty-border);
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.ty-tabs > .nav-tabs::-webkit-scrollbar { display: none; }

.nav-tabs .nav-link {
  color: var(--ty-text-muted);
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  padding: 11px 16px 9px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.nav-tabs .nav-link:hover { color: var(--ty-text); border-bottom-color: var(--ty-border-2); }
.nav-tabs .nav-link.active {
  background: transparent;
  color: var(--ty-text);
  font-weight: 600;
  border-bottom-color: var(--ty-brand);
}

/* Bootstrap keeps inactive panes mounted and hides them; that is what lets the
   interval callbacks keep working. Nothing may leak visually. */
.tab-content { background: transparent; border: 0; }
.tab-content > .tab-pane { padding-top: 2px; }
.tab-content > .tab-pane:not(.active) { display: none; }
.tab-content > .tab-pane > br { display: none; }   /* <br> was doing spacing's job */
.tab-content > .tab-pane > hr { margin: 20px 0; }

@media (max-width: 768px) {
  .nav-tabs .nav-link { padding: 10px 12px 8px; font-size: 0.86rem; }
  .ty-tabs > .nav-tabs { margin-bottom: 14px; }
}

/* ------------------------------------------------------ section headings -- */

.ty-section-head { margin: 4px 0 18px; }
.ty-section-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--ty-text);
}
.ty-section-note { color: var(--ty-text-muted); font-size: 0.88rem; margin: 0; max-width: 90ch; }

.tab-content > .tab-pane > h1 { font-size: 1.3rem; margin: 6px 0 2px; }
.tab-content > .tab-pane > h2 { font-size: 1.15rem; margin: 6px 0 12px; }
.tab-content > .tab-pane > h3 {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ty-brand);
  margin: 4px 0 0;
}

/* ---------------------------------------------------------------- tables -- */

.table {
  --bs-table-bg: transparent;
  --bs-table-hover-bg: transparent;
  background: var(--ty-surface);
  border: 1px solid var(--ty-border);
  border-radius: var(--ty-radius);
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  color: var(--ty-text);
  margin-bottom: 24px;
  font-size: 0.9rem;
}

/* SLATE ships a heavy grid; one hairline between rows is all the eye needs. */
.table > :not(caption) > * > * {
  border: 0;
  border-bottom: 1px solid var(--ty-border);
  padding: 0.5rem 0.75rem;
  background: transparent;
  color: inherit;
  vertical-align: middle;
  box-shadow: none;
}
.table > tbody > tr:last-child > * { border-bottom: 0; }

.table > thead > tr > th {
  background: var(--ty-surface-2);
  color: var(--ty-text-muted);
  font-size: 0.69rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  white-space: nowrap;
  border-bottom: 1px solid var(--ty-border-2);
}
.table > thead > tr > th:first-child { color: var(--ty-brand); }

/* Numeric columns right-aligned with tabular lining figures, so decimal points
   stack - the single thing that makes a rate table look deliberate. */
.table > thead > tr > th:not(:first-child),
.table > tbody > tr > td:not(:first-child) {
  text-align: right;
  font-variant-numeric: tabular-nums lining-nums;
}
.table > tbody > tr > td:first-child { font-weight: 500; white-space: nowrap; }

.table > tbody > tr:hover > td { background: rgba(110, 180, 255, 0.05); }

.ty-num { text-align: right; font-variant-numeric: tabular-nums lining-nums; }

/* Sparklines (inline SVG drawn by rates_series.py) and the term under a bond code.
   The cell takes only the width its image needs, so the numbers keep theirs. */
.ty-spark-cell {
  width: 1%;
  padding-top: 0.25rem !important;
  padding-bottom: 0.25rem !important;
}
.ty-spark { display: block; width: 72px; height: 22px; margin-left: auto; }
.ty-sub {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  line-height: 1.15;
  color: var(--ty-text-dim);
  font-variant-numeric: tabular-nums;
}
.ty-up { color: var(--ty-up); }
.ty-down { color: var(--ty-down); }
.ty-flat { color: var(--ty-text-dim); }

/* The published quote in a row of converted rates: weight, not colour. */
.ty-native strong { font-weight: 700; color: var(--ty-text); }

.ty-next-mpc { color: var(--ty-brand); font-weight: 600; }

/* Provenance: small, monospaced, present but never competing with the data -
   and it makes staleness visible in public rather than hiding it. */
.ty-source-row > td, .ty-source {
  color: var(--ty-text-dim);
  font-family: var(--ty-mono);
  font-size: 0.72rem;
  letter-spacing: 0;
  text-align: left !important;       /* beats the numeric right-align rule */
  font-weight: 400 !important;
  white-space: normal !important;
}
.ty-source-row > td { background: rgba(255, 255, 255, 0.012); }
.ty-convention-note { line-height: 1.55; }

.ty-unavailable {
  color: var(--ty-text-muted);
  font-style: italic;
  text-align: center !important;
  padding: 1.1rem !important;
}

/* Dense tables scroll inside their own column on a phone; the page never
   scrolls sideways. */
@media (max-width: 768px) {
  .table { display: block; overflow-x: auto; white-space: nowrap; }
  body { font-size: 14px; }
}

/* ---------------------------------------------------- the live feed rows -- */
/* The "Live Pricing" and "UTC Timestamp" rows carry a dbc.Spinner as a
   freshness pulse; keep it small and quiet. */
.table .spinner-grow {
  width: 0.7rem;
  height: 0.7rem;
  vertical-align: middle;
  background-color: var(--ty-up) !important;
}

/* --------------------------------------------------------------- spacing -- */

.row { --bs-gutter-x: 24px; --bs-gutter-y: 20px; }
.tab-content .row > [class^="col"] > div > .table:last-child,
.tab-content .row > [class*=" col"] > div > .table:last-child { margin-bottom: 0; }

@media (max-width: 768px) {
  .row { --bs-gutter-x: 16px; --bs-gutter-y: 16px; }
  .table { margin-bottom: 16px; }
}

/* ------------------------------------------------------ inputs & pickers -- */
/* Dash 2.6 renders dcc.Input as a bare <input>, and DatePickerSingle and
   Dropdown as light widgets. All of them are restyled here, or the calculators
   show white boxes on a dark page. */

.form-control, .form-select,
.tab-pane input[type="number"], .tab-pane input[type="text"] {
  background: var(--ty-surface-2);
  border: 1px solid var(--ty-border-2);
  color: var(--ty-text);
  border-radius: var(--ty-radius);
  padding: 0.42rem 0.65rem;
  font-family: var(--ty-sans);
  font-variant-numeric: tabular-nums;
  min-width: 200px;
}
.form-control:focus, .form-select:focus,
.tab-pane input[type="number"]:focus, .tab-pane input[type="text"]:focus {
  background: var(--ty-surface-2);
  border-color: var(--ty-accent);
  box-shadow: 0 0 0 3px rgba(110, 180, 255, 0.2);
  color: var(--ty-text);
  outline: none;
}
.form-control::placeholder, .tab-pane input::placeholder { color: var(--ty-text-dim); }

/* dcc.Dropdown (react-select v1 in dcc 2.6) */
.Select-control {
  background-color: var(--ty-surface-2) !important;
  border: 1px solid var(--ty-border-2) !important;
  border-radius: var(--ty-radius) !important;
  color: var(--ty-text) !important;
}
.is-focused:not(.is-open) > .Select-control { box-shadow: 0 0 0 3px rgba(110, 180, 255, 0.2) !important; border-color: var(--ty-accent) !important; }
.Select-placeholder, .Select--single > .Select-control .Select-value,
.Select-value-label, .Select-input > input { color: var(--ty-text) !important; }
.Select-arrow { border-top-color: var(--ty-text-muted) !important; }
.Select-menu-outer {
  background: var(--ty-surface-2) !important;
  border: 1px solid var(--ty-border-2) !important;
  border-radius: 0 0 var(--ty-radius) var(--ty-radius) !important;
  z-index: 20 !important;
}
.Select-option, .VirtualizedSelectOption {
  background-color: var(--ty-surface-2) !important;
  color: var(--ty-text) !important;
}
.Select-option.is-focused, .VirtualizedSelectFocusedOption {
  background-color: var(--ty-surface-3) !important;
  color: var(--ty-text) !important;
}

/* dcc.DatePickerSingle (react-dates) */
.SingleDatePickerInput, .SingleDatePickerInput__withBorder, .DateInput {
  background: var(--ty-surface-2) !important;
  border-color: var(--ty-border-2) !important;
  border-radius: var(--ty-radius);
}
.DateInput_input {
  background: var(--ty-surface-2) !important;
  color: var(--ty-text) !important;
  font-family: var(--ty-sans) !important;
  font-size: 0.95rem !important;
  font-variant-numeric: tabular-nums;
  border-bottom-color: transparent !important;
  padding: 7px 10px !important;
}
.DateInput_input__focused { border-bottom-color: var(--ty-accent) !important; }
.SingleDatePicker_picker, .DayPicker, .DayPicker__horizontal,
.CalendarMonthGrid, .CalendarMonth, .DayPickerKeyboardShortcuts_panel {
  background: var(--ty-surface-2) !important;
}
.SingleDatePicker_picker { border: 1px solid var(--ty-border-2); border-radius: var(--ty-radius); z-index: 30 !important; }
.CalendarMonth_caption, .DayPicker_weekHeader_li { color: var(--ty-text) !important; }
.DayPicker_weekHeader { color: var(--ty-text-muted) !important; }
.CalendarDay__default {
  background: var(--ty-surface-2) !important;
  border-color: var(--ty-border) !important;
  color: var(--ty-text) !important;
}
.CalendarDay__default:hover { background: var(--ty-surface-3) !important; }
.CalendarDay__selected, .CalendarDay__selected:hover {
  background: var(--ty-brand) !important;
  border-color: var(--ty-brand) !important;
  color: var(--ty-on-brand) !important;
}
.CalendarDay__blocked_out_of_range { color: var(--ty-text-dim) !important; }
.DayPickerNavigation_button__default {
  background: var(--ty-surface-3) !important;
  border-color: var(--ty-border-2) !important;
}
.DayPickerNavigation_svg__horizontal { fill: var(--ty-text) !important; }
.DateInput_fang { display: none; }

/* ------------------------------------------------------------ buttons -- */

.btn-primary, .btn-primary:disabled {
  background: var(--ty-brand);
  border-color: var(--ty-brand);
  color: var(--ty-on-brand);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--ty-radius);
  padding: 0.5rem 1rem;
}
.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
  background: var(--ty-brand-strong) !important;
  border-color: var(--ty-brand-strong) !important;
  color: var(--ty-on-brand) !important;
}

/* --------------------------------------------------------- calculators -- */
/* The SA Bonds and Namibia calculators are H4 field labels, H5 ticket
   sections and <span> outputs. Styled as a form and a trade ticket. */

.tab-pane h4 {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ty-text-muted);
  margin: 14px 0 6px;
}
.tab-pane h5 {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ty-brand);
  margin: 14px 0 6px;
}
.tab-pane h5 + hr { margin: 4px 0 8px; }

.tab-pane span[id$="-output-div"], .tab-pane span[id$="-output"] {
  font-family: var(--ty-mono);
  font-variant-numeric: tabular-nums;
  color: var(--ty-text);
  font-weight: 500;
}

.alert-warning, .ty-ticket-alert {
  background: rgba(226, 177, 85, 0.07) !important;
  border: 1px solid rgba(226, 177, 85, 0.28) !important;
  border-left: 3px solid var(--ty-brand) !important;
  color: var(--ty-text) !important;
  border-radius: var(--ty-radius);
  font-size: 0.92rem !important;
  font-weight: 500 !important;
  white-space: pre-line;
}

/* --------------------------------------------------------------- API tab -- */

.ty-api { margin-top: 4px; }
.ty-api > hr:first-child { display: none; }
.ty-api > h2 { font-size: 1.15rem; margin-bottom: 4px; }
.ty-api-lede { color: var(--ty-text-muted); max-width: 70ch; margin-bottom: 16px; }
.ty-api-desc { color: var(--ty-text-muted); }

code {
  font-size: 0.85em;
  color: var(--ty-accent);
  background: rgba(110, 180, 255, 0.08);
  border: 1px solid rgba(110, 180, 255, 0.16);
  border-radius: 4px;
  padding: 0.08em 0.36em;
  white-space: nowrap;
}

.ty-code {
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--ty-text);
  background: var(--ty-surface);
  border: 1px solid var(--ty-border);
  border-radius: var(--ty-radius);
  padding: 14px 16px;
  margin: 0;
  overflow-x: auto;
  white-space: pre;
  tab-size: 2;
}
.ty-code code { background: none; border: 0; padding: 0; white-space: pre; color: inherit; }

.ty-api-note {
  color: var(--ty-text-muted);
  border-left: 3px solid var(--ty-brand);
  background: rgba(226, 177, 85, 0.06);
  padding: 10px 14px;
  margin-top: 16px;
  border-radius: 0 var(--ty-radius) var(--ty-radius) 0;
  max-width: 80ch;
}
.ty-api-note strong { color: var(--ty-text); }

/* In the API table the second column is prose; right-aligning a sentence reads
   as a mistake. */
.ty-api .table > thead > tr > th:not(:first-child),
.ty-api .table > tbody > tr > td:not(:first-child),
.ty-api-desc { text-align: left; }
.ty-api .table > tbody > tr > td:first-child { width: 1%; }

/* ------------------------------------------------------------- Curve tab -- */

.ty-curve { padding-bottom: 16px; }

.ty-chart-card {
  background: var(--ty-surface);
  border: 1px solid var(--ty-border);
  border-radius: var(--ty-radius);
  padding: 16px 18px 10px;
  margin-bottom: 20px;
}

.ty-chart-head { margin-bottom: 10px; }
.ty-chart-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ty-text);
  margin: 0 0 2px;
  letter-spacing: 0;
}
.ty-chart-note { color: var(--ty-text-muted); font-size: 0.84rem; margin: 0; max-width: 95ch; }

.ty-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  margin: 6px 0 4px;
}
.ty-ctl { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 10px; }
.ty-ctl-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ty-text-dim);
}

/* One range control scopes both time-series charts, so it sits directly above
   them. Not sticky: pinned, it floated over the curve, heatmap and animation
   charts it does not control. */
.ty-range-bar {
  margin: 0 0 12px;
  padding: 2px 0;
}

.ty-reset {
  font: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ty-text-muted);
  background: var(--ty-surface);
  border: 1px solid var(--ty-border-2);
  border-radius: var(--ty-radius);
  padding: 4px 11px;
  cursor: pointer;
}
.ty-reset:hover { color: var(--ty-text); background: var(--ty-surface-2); }

/* Chart heights live here. The graphs are dcc.Graph(responsive=True) and fill
   their containers, and .plot-container must pass the height down or Plotly's
   inner height:100% chain resolves to 0px. A height inside the figure instead was
   wiped by dcc's autosize relayout on resize and collapsed the plots (measured
   2026-09-14; this arrangement held in every run). */
#curve-shape { height: 470px; }
#hist-graph, #spread-graph { height: 400px; }
#moves-graph { height: 360px; }
#anim-graph { height: 480px; }
.ty-graph .js-plotly-plot, .ty-graph .js-plotly-plot .plot-container { height: 100%; }

/* Segmented control (dcc.RadioItems). The native radio stays in the DOM and
   focusable; only its dot is hidden. Selection is weight + fill, not colour. */
.ty-seg {
  display: inline-flex;
  flex-wrap: wrap;
  border: 1px solid var(--ty-border-2);
  border-radius: var(--ty-radius);
  overflow: hidden;
  background: var(--ty-surface);
}
.ty-seg-option {
  position: relative;
  display: inline-flex !important;
  align-items: center;
  margin: 0 !important;
  padding: 4px 11px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ty-text-muted);
  cursor: pointer;
  user-select: none;
  border-left: 1px solid var(--ty-border);
  font-variant-numeric: tabular-nums;
}
.ty-seg-option:first-child { border-left: 0; }
.ty-seg-option:hover { color: var(--ty-text); background: var(--ty-surface-2); }
.ty-seg-input { position: absolute; opacity: 0; width: 1px; height: 1px; margin: 0; }
.ty-seg-option:has(.ty-seg-input:checked) {
  background: var(--ty-surface-3);
  color: var(--ty-text);
  font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--ty-brand);
}
.ty-seg-option:has(.ty-seg-input:focus-visible) { outline: 2px solid var(--ty-accent); outline-offset: -2px; }

/* Chips (dcc.Checklist). A checked chip gains a tick and weight. */
.ty-chips { display: inline-flex; flex-wrap: wrap; gap: 6px; }
.ty-chip {
  position: relative;
  display: inline-flex !important;
  align-items: center;
  gap: 5px;
  margin: 0 !important;
  padding: 3px 10px;
  font-size: 0.8rem;
  color: var(--ty-text-muted);
  border: 1px solid var(--ty-border-2);
  border-radius: 999px;
  cursor: pointer;
  user-select: none;
  background: var(--ty-surface);
}
.ty-chip:hover { color: var(--ty-text); background: var(--ty-surface-2); }
.ty-chip-input { position: absolute; opacity: 0; width: 1px; height: 1px; margin: 0; }
.ty-chip::before { content: "+"; font-weight: 600; color: var(--ty-text-dim); width: 0.7em; text-align: center; }
.ty-chip:has(.ty-chip-input:checked) {
  color: var(--ty-text);
  font-weight: 600;
  background: var(--ty-surface-3);
  border-color: var(--ty-text-muted);
}
.ty-chip:has(.ty-chip-input:checked)::before { content: "\2713"; color: var(--ty-brand); }
.ty-chip:has(.ty-chip-input:focus-visible) { outline: 2px solid var(--ty-accent); outline-offset: 2px; }

.ty-graph { margin: 0 -6px; }

/* The spread statistics table - the table view of the spreads chart. */
.ty-table-wrap { overflow-x: auto; margin: 8px 0 6px; }
.ty-stats { margin-bottom: 0; font-size: 0.82rem; border-color: var(--ty-border); }
.ty-stats > :not(caption) > * > * { padding: 0.36rem 0.6rem; }
.ty-stats td, .ty-stats th { white-space: nowrap; }
.ty-spread-name { display: flex; align-items: center; gap: 8px; }
.ty-swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex: none;
}
.ty-swatch-off { border: 1px solid var(--ty-border-2); }

.ty-curve-foot { margin-top: 8px; display: block; }

@media (max-width: 640px) {
  .ty-chart-card { padding: 12px 10px 6px; }
  .ty-controls { gap: 8px 14px; }
  .ty-seg-option { padding: 4px 8px; font-size: 0.76rem; }
  #curve-shape { height: 400px; }
  #hist-graph, #spread-graph { height: 340px; }
  #moves-graph { height: 320px; }
  #anim-graph { height: 420px; }
}

/* ----------------------------------------------------------------- motion -- */

.nav-tabs .nav-link, a, .btn, .ty-seg-option, .ty-chip,
.table > tbody > tr > td { transition: color 140ms ease-out, background-color 140ms ease-out, border-color 140ms ease-out; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}