/* ============================================================
   Tonesu Site Theme — Monokai Pro
   Dark:  Filter Spectrum  (#222222 base, yellow accent)
   Light: Filter Sun       (#f8efe7 base, rose accent)
   ============================================================ */

/* ── Shared ─────────────────────────────────────────────── */
:root {
  --tonesu-font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;
}

/* ── Filter Spectrum — Dark ─────────────────────────────── */
[data-md-color-scheme="slate"] {

  /* Page */
  --md-default-bg-color:            #222222;   /* editor.background        */
  --md-default-fg-color:            #f7f1ff;   /* editor.foreground        */
  --md-default-fg-color--light:     #bab6c0;   /* activityBar.foreground   */
  --md-default-fg-color--lighter:   #8b888f;   /* sideBar.foreground       */
  --md-default-fg-color--lightest:  #525053;   /* editorLineNumber.fg      */

  /* Nav / header — very dark strip */
  --md-primary-bg-color:            #131313;   /* activityBar.background   */
  --md-primary-bg-color--light:     #191919;   /* sideBar.background       */
  --md-primary-fg-color:            #bab6c0;   /* activityBar.foreground   */
  --md-primary-fg-color--light:     #8b888f;
  --md-primary-fg-color--dark:      #f7f1ff;

  /* Accent — Monokai yellow */
  --md-accent-fg-color:             #fce566;   /* activityBarBadge.bg      */
  --md-accent-fg-color--transparent:#fce56633;
  --md-accent-bg-color:             #131313;

  /* Code blocks */
  --md-code-bg-color:               #191919;   /* sideBar.background       */
  --md-code-fg-color:               #f7f1ff;

  /* Syntax — Monokai Spectrum palette */
  --md-code-hl-color:               #f7f1ff19;
  --md-code-hl-number-color:        #948ae3;   /* purple                   */
  --md-code-hl-special-color:       #7bd88f;   /* green                    */
  --md-code-hl-function-color:      #5ad4e6;   /* cyan                     */
  --md-code-hl-constant-color:      #fd9353;   /* orange                   */
  --md-code-hl-keyword-color:       #fc618d;   /* pink                     */
  --md-code-hl-string-color:        #fce566;   /* yellow                   */
  --md-code-hl-name-color:          #f7f1ff;
  --md-code-hl-operator-color:      #fc618d;
  --md-code-hl-punctuation-color:   #69676c;
  --md-code-hl-comment-color:       #69676c;
  --md-code-hl-generic-color:       #bab6c0;
  --md-code-hl-variable-color:      #f7f1ff;

  /* Links */
  --md-typeset-a-color:             #fd9353;   /* orange                   */

  /* Tables */
  --md-typeset-table-color:         #363537;   /* panel.background         */
  --md-typeset-table-color--light:  #f7f1ff14;

  /* Keyboard keys */
  --md-typeset-kbd-color:           #363537;
  --md-typeset-kbd-accent-color:    #f7f1ff;
  --md-typeset-kbd-border-color:    #525053;

  /* Admonitions */
  --md-admonition-fg-color:         #f7f1ff;
  --md-admonition-bg-color:         #2a2a2a;

  /* Footer */
  --md-footer-bg-color:             #131313;
  --md-footer-bg-color--dark:       #0d0d0d;
  --md-footer-fg-color:             #8b888f;
  --md-footer-fg-color--light:      #69676c;
  --md-footer-fg-color--lighter:    #525053;

  /* Shadows */
  --md-shadow-z1: 0 0.2rem 0.5rem #13131366, 0 0 0.05rem #13131333;
  --md-shadow-z2: 0 0.2rem 0.8rem #13131388, 0 0 0.05rem #13131344;
  --md-shadow-z3: 0 0.2rem 1.0rem #131313bb;
}

/* ── Filter Sun — Light ─────────────────────────────────── */
[data-md-color-scheme="default"] {

  /* Page — warm cream */
  --md-default-bg-color:            #f8efe7;   /* editor.background        */
  --md-default-fg-color:            #2c232e;   /* editor.foreground        */
  --md-default-fg-color--light:     #72696d;   /* sideBar.foreground       */
  --md-default-fg-color--lighter:   #92898a;   /* statusBar.foreground     */
  --md-default-fg-color--lightest:  #beb5b3;   /* editorLineNumber.fg      */

  /* Nav / header — warm sand */
  --md-primary-bg-color:            #ded5d0;   /* activityBar.background   */
  --md-primary-bg-color--light:     #eee5de;   /* sideBar.background       */
  --md-primary-fg-color:            #72696d;   /* activityBar.foreground   */
  --md-primary-fg-color--light:     #92898a;
  --md-primary-fg-color--dark:      #2c232e;

  /* Accent — rose */
  --md-accent-fg-color:             #ce4770;   /* activityBarBadge.bg      */
  --md-accent-fg-color--transparent:#ce477033;
  --md-accent-bg-color:             #f8efe7;

  /* Code blocks */
  --md-code-bg-color:               #fdf7f3;   /* editorSuggestWidget.bg   */
  --md-code-fg-color:               #2c232e;

  /* Syntax — Monokai Filter Sun palette */
  --md-code-hl-color:               #2c232e19;
  --md-code-hl-number-color:        #6851a2;   /* purple                   */
  --md-code-hl-special-color:       #218871;   /* teal                     */
  --md-code-hl-function-color:      #2473b6;   /* blue                     */
  --md-code-hl-constant-color:      #d4572b;   /* orange‑red               */
  --md-code-hl-keyword-color:       #ce4770;   /* rose                     */
  --md-code-hl-string-color:        #b16803;   /* amber                    */
  --md-code-hl-name-color:          #2c232e;
  --md-code-hl-operator-color:      #ce4770;
  --md-code-hl-punctuation-color:   #a59c9c;
  --md-code-hl-comment-color:       #a59c9c;
  --md-code-hl-generic-color:       #72696d;
  --md-code-hl-variable-color:      #2c232e;

  /* Links */
  --md-typeset-a-color:             #b16803;   /* amber/yellow             */

  /* Tables */
  --md-typeset-table-color:         #d2c9c4;   /* input.border             */
  --md-typeset-table-color--light:  #2c232e0c;

  /* Keyboard keys */
  --md-typeset-kbd-color:           #ded5d0;
  --md-typeset-kbd-accent-color:    #2c232e;
  --md-typeset-kbd-border-color:    #beb5b3;

  /* Admonitions */
  --md-admonition-fg-color:         #2c232e;
  --md-admonition-bg-color:         #f0e7de;

  /* Footer */
  --md-footer-bg-color:             #ded5d0;
  --md-footer-bg-color--dark:       #d2c9c4;
  --md-footer-fg-color:             #72696d;
  --md-footer-fg-color--light:      #92898a;
  --md-footer-fg-color--lighter:    #a59c9c;

  /* Shadows */
  --md-shadow-z1: 0 0.2rem 0.5rem #2c232e1a, 0 0 0.05rem #2c232e0d;
  --md-shadow-z2: 0 0.2rem 0.8rem #2c232e33, 0 0 0.05rem #2c232e14;
  --md-shadow-z3: 0 0.2rem 1.0rem #2c232e4d;
}

/* ── Typography & structure (both modes) ─────────────────── */

.md-typeset code {
  font-family: var(--tonesu-font-mono);
  font-size: 0.85em;
  border-radius: 3px;
  padding: 0.1em 0.3em;
}

/* ── Tonesu language forms — inline code display ─────────── */
/*
 * On this site, inline code spans are Tonesu word forms or linguistic
 * notation — not code snippets. Site-wide: strip the code-box chrome,
 * render at body size in accent color so forms stand out from English
 * gloss text without being aggressive. Pre>code blocks are excluded.
 * Homepage showcase/example sections get bold + slightly larger on top.
 */
.md-typeset :not(pre) > code {
  background: transparent;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
  font-size: 1em;
  color: var(--md-accent-fg-color);
}

/* Homepage demo sections: bold + larger for hero display */
.tn-showcase :not(pre) > code,
.tn-example-grid :not(pre) > code {
  font-size: 1.1em;
  font-weight: 700;
}

/* Force tables to fill their container (Material defaults to inline-block) */
.md-typeset__scrollwrap {
  margin: 1em 0;            /* kill Material's negative-margin trick              */
}

.md-typeset__table {
  display: block;
  width: 100%;
  padding: 0;               /* remove Material's 0 .8rem padding                  */
  overflow-x: auto;
}

html .md-typeset__table table {
  width: 100%;
  display: table;
  overflow: visible;         /* remove Material's overflow: hidden                 */
}

.md-typeset table:not([class]) {
  display: table;
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 4px;
  width: 100%;
  max-width: none;           /* override Material's max-width: 100%               */
  table-layout: auto;
}

.md-typeset table:not([class]) th {
  background-color: var(--md-code-bg-color);
  font-weight: 600;
}

/* Let inline code in tables (Tonesu forms) breathe — avoid mid-compound breaks */
.md-typeset table:not([class]) code {
  white-space: nowrap;
}

/* Give table cells some breathing room */
.md-typeset table:not([class]) td,
.md-typeset table:not([class]) th {
  padding: .6em .8em;
}

/* ── Left navigation — visual hierarchy ─────────────────── */

/*
 * Section-group labels (e.g. "Domains", "Registry", "Corpus") are <label>
 * elements. Decoration-only section headings (non-toggling) are styled as
 * headings: uppercase, letter-spaced, dimmer, not clickable.
 * md-nav__item--section labels ARE toggling (clickable) on mobile — excluded.
 */
.md-nav__list .md-nav__item:not(.md-nav__item--section) > label.md-nav__link:not(.md-nav__link--active) {
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  opacity: .45;
  margin-top: .55rem;
  display: block;
  cursor: default;
  pointer-events: none;
}

/* Hide the collapse/expand arrow on non-section (decoration-only) label nav items */
.md-nav__item--nested:not(.md-nav__item--section) > label.md-nav__link > .md-nav__icon {
  display: none;
}

/* On desktop: force section nav items to stay expanded.
   On mobile, Material's tap-to-expand behavior takes over naturally. */
@media screen and (min-width: 76.25em) {
  .md-nav__item--section > input.md-nav__toggle ~ .md-nav,
  .md-nav__item--section > label.md-nav__link ~ .md-nav {
    display: block !important;
    max-height: none !important;
    overflow: visible !important;
  }
}

/* The top-of-sidebar section title (back-link) uses .md-nav__title, not
   a <label>, so the rule above does not affect it. */

/*
 * Indent links that live inside a nested section (depth ≥ 3).
 * .md-nav__list .md-nav__list matches lists inside lists — i.e. sub-section
 * contents (Biology, English index, etc.) relative to sibling direct links.
 */
.md-nav__list .md-nav__list a.md-nav__link {
  padding-left: .9rem;
}

/*
 * Sidebar scroll: keep the scroll functional but make the scrollbar
 * nearly invisible — thin, transparent track, visible only on hover.
 * Firefox (scrollbar-width/scrollbar-color); Webkit fallback below.
 */
@supports (scrollbar-width: thin) {
  .md-sidebar__scrollwrap {
    scrollbar-width: thin;
    scrollbar-color: rgba(0,0,0,0) rgba(0,0,0,0);
  }
  .md-sidebar__scrollwrap:hover {
    scrollbar-color: rgba(127,127,127,.25) rgba(0,0,0,0);
  }
}
/* Webkit (Chrome, Edge, Safari) */
.md-sidebar__scrollwrap::-webkit-scrollbar {
  width: 4px;
}
.md-sidebar__scrollwrap::-webkit-scrollbar-track {
  background: transparent;
}
.md-sidebar__scrollwrap::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 2px;
}
.md-sidebar__scrollwrap:hover::-webkit-scrollbar-thumb {
  background: rgba(127,127,127,.25);
}

/* ── Compact top bar ─────────────────────────────────────── */
.md-header__inner {
  padding-top: 0 !important;
  padding-bottom: 0 !important;
}

.md-header__title {
  height: 1.8rem !important;
  line-height: 1.8rem !important;
}

.md-header__button {
  padding-top: 0.25rem !important;
  padding-bottom: 0.25rem !important;
}

/* ── Top nav tab subtitles ────────────────────────────────── */
/* Tiny descriptors beneath the three main section tabs.
   Use :nth-child on list items (tab order is fixed in mkdocs.yml):
   1=Home  2=Tonesu  3=Totonesu  4=To'tonesu  5=About             */
.md-tabs__item {
  height: 2.8rem !important;
}

.md-tabs__link {
  flex-direction: column;
  align-items: center;
  line-height: 1;
  margin-top: 0.55rem !important;
  padding-bottom: 0;
}

.md-tabs__item:nth-child(3) > .md-tabs__link::after,
.md-tabs__item:nth-child(4) > .md-tabs__link::after,
.md-tabs__item:nth-child(5) > .md-tabs__link::after {
  display: block;
  font-size: 0.55rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--md-primary-bg-color);
  opacity: 0.5;
  margin-top: 0.08rem;
}

.md-tabs__item:nth-child(3) > .md-tabs__link::after { content: "the language"; }
.md-tabs__item:nth-child(4) > .md-tabs__link::after { content: "in use"; }
.md-tabs__item:nth-child(5) > .md-tabs__link::after { content: "design"; }

/* ── DataTables filter input ─────────────────────────────── */
.dt-layout-row {
  margin-bottom: 0.8rem;
}

.dt-search label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--md-default-fg-color--light);
}

.dt-search .dt-input {
  background: var(--md-code-bg-color);
  color: var(--md-default-fg-color);
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 4px;
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
  font-family: var(--md-text-font);
  min-width: 220px;
  outline: none;
}

.dt-search .dt-input:focus {
  border-color: var(--md-accent-fg-color);
  box-shadow: 0 0 0 2px var(--md-accent-fg-color--transparent);
}

/* ── DataTables table structure ──────────────────────────── */

/* Restore Material's table wrapper after DataTables takes over */
table.dataTable {
  width: 100% !important;
  border-collapse: collapse;
  border: .05rem solid var(--md-typeset-table-color);
  border-radius: .1rem;
  font-size: .64rem;
}

table.dataTable thead th {
  background-color: var(--md-code-bg-color);
  color: var(--md-default-fg-color);
  font-weight: 600;
  padding: .6em .8em;
  border-bottom: .05rem solid var(--md-typeset-table-color);
  text-align: left;
  vertical-align: bottom;
  white-space: nowrap;
  cursor: pointer;
}

table.dataTable tbody td {
  padding: .6em .8em;
  border-bottom: 1px solid var(--md-typeset-table-color);
  vertical-align: top;
}

/* Word / form columns: keep on one line */
table.dataTable td.col-word,
table.dataTable th.col-word {
  white-space: nowrap;
}

/* W# column */
table.dataTable td.col-wnum,
table.dataTable th.col-wnum {
  text-align: center;
  white-space: nowrap;
  min-width: 3.5rem;
}

/* Status column */
table.dataTable td.col-status,
table.dataTable th.col-status {
  text-align: center;
  white-space: nowrap;
  min-width: 2rem;
}

/* English keyword column */
table.dataTable td.col-english,
table.dataTable th.col-english {
  white-space: nowrap;
}

/* Word detail page corpus columns */
table.dataTable td.col-snum,
table.dataTable th.col-snum {
  white-space: nowrap;
  min-width: 3.5rem;
}

table.dataTable td.col-tonesu,
table.dataTable th.col-tonesu {
  min-width: 14rem;
}

/* Natural-language gloss stacked under tonesu in combined cell */
.entry-natural {
  display: block;
  margin-top: 0.3rem;
  color: var(--md-default-fg-color--light);
  font-size: 0.82rem;
  white-space: normal;
}

/* Colloquial CLQ ID column */
table.dataTable td.col-clqid,
table.dataTable th.col-clqid {
  white-space: nowrap;
  min-width: 5rem;
}

/* Formal compound column (colloquial pages) */
table.dataTable td.col-formal,
table.dataTable th.col-formal {
  white-space: nowrap;
}

/* First use column (colloquial pages) */
table.dataTable td.col-firstuse,
table.dataTable th.col-firstuse {
  text-align: center;
  white-space: nowrap;
  min-width: 4rem;
}

/* Corpus links inside gloss cell */
table.dataTable tbody td small {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.85em;
  color: var(--md-default-fg-color--light);
  line-height: 1.4;
}
table.dataTable tbody td small a {
  color: var(--md-typeset-a-color);
}

table.dataTable tbody tr:hover td {
  background: color-mix(in sRGB, var(--md-accent-fg-color) 6%, var(--md-default-bg-color));
}

/* Sort arrow color for DataTables */
table.dataTable thead th.dt-orderable-asc span.dt-column-order::before,
table.dataTable thead th.dt-orderable-desc span.dt-column-order::after {
  color: var(--md-accent-fg-color);
}

/* ── DataTables bottom bar (info + paging on one line) ──── */
.dt-layout-row:last-child {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.6rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--md-typeset-table-color);
}

.dt-info {
  font-size: 0.75rem;
  color: var(--md-default-fg-color--light);
  white-space: nowrap;
}

/* Paging container */
.dt-paging {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Arrow buttons (first, previous, next, last) */
.dt-paging-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.8rem;
  height: 1.8rem;
  padding: 0 0.4rem;
  font-size: 0.75rem;
  font-family: var(--md-text-font);
  color: var(--md-default-fg-color--light);
  background: var(--md-code-bg-color);
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 4px;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.dt-paging-button:hover:not(.disabled) {
  background: color-mix(in sRGB, var(--md-accent-fg-color) 12%, var(--md-code-bg-color));
  border-color: var(--md-accent-fg-color);
  color: var(--md-default-fg-color);
}

.dt-paging-button.disabled {
  opacity: 0.35;
  cursor: default;
}

/* Active page number — accent-colored link style */
.dt-paging-button.current {
  background: transparent;
  border-color: var(--md-accent-fg-color);
  color: var(--md-accent-fg-color);
  font-weight: 700;
}

/* Non-active page numbers — colored links, no button chrome */
.dt-paging-button:not(.current):not(.disabled):not(.previous):not(.next):not(.first):not(.last) {
  background: transparent;
  border-color: transparent;
  color: var(--md-typeset-a-color);
}
.dt-paging-button:not(.current):not(.disabled):not(.previous):not(.next):not(.first):not(.last):hover {
  color: var(--md-accent-fg-color);
  background: transparent;
  border-color: transparent;
  text-decoration: underline;
}

/* ── Corpus annotation (sentence notes) ─────────────────── */
.md-typeset .admonition.annotation {
  border: 1px solid var(--md-typeset-table-color);
  border-left: 3px solid var(--md-default-fg-color--lighter);
  border-radius: 0 4px 4px 0;
  background: color-mix(in sRGB, var(--md-code-bg-color) 40%, var(--md-default-bg-color));
  box-shadow: none;
  font-size: .82rem;
  padding: .5rem .8rem;
  margin: .4rem 0 .8rem;
}

.md-typeset .admonition.annotation > .admonition-title {
  background: none;
  border: none;
  padding: 0 0 .2rem;
  margin: 0;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--lighter);
}

.md-typeset .admonition.annotation > .admonition-title::before {
  display: none;             /* no icon */
}

.md-typeset .admonition.annotation p {
  margin: .2rem 0;
}

/* ── Derivation block (sandbox, examples) ───────────────── */
.tn-derive {
  background: color-mix(in sRGB, var(--md-code-bg-color) 70%, var(--md-default-bg-color));
  border-left: 3px solid var(--md-typeset-a-color);
  border-radius: 0 5px 5px 0;
  padding: .55rem 1rem .55rem 1rem;
  margin: .7rem 0 1rem;
  font-size: .875rem;
  line-height: 1.85;
  overflow-wrap: break-word;
}

.tn-derive > p {
  margin: 0 !important;
}

.tn-derive > p + p {
  margin-top: .45rem !important;
}

/* ── Root builder ────────────────────────────────────────── */
/*
 * All colours use CSS custom properties so the builder respects both
 * the dark (Filter Spectrum) and light (Filter Sun) themes.
 */
.rb-container {
  font-family: inherit;
}

.rb-loading  { color: var(--md-default-fg-color--light); }
.rb-error    { color: var(--md-code-hl-keyword-color); }

/* Header: controls + compound display */
.rb-header {
  background: var(--md-code-bg-color);
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 6px;
  padding: .75rem 1rem;
  margin-bottom: 1rem;
}

.rb-controls {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.25rem;
  margin-bottom: .6rem;
}

.rb-btn-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .3rem;
}

.rb-group-label {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--md-default-fg-color--lighter);
  margin-right: .15rem;
}

.rb-ctrl-btn {
  background: color-mix(in sRGB, var(--md-code-bg-color) 70%, var(--md-default-bg-color));
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 4px;
  color: var(--md-default-fg-color--light);
  cursor: pointer;
  font-size: .8rem;
  padding: .2rem .55rem;
  transition: background .15s, border-color .15s, color .15s;
}
.rb-ctrl-btn:hover {
  background: color-mix(in sRGB, var(--md-typeset-table-color) 40%, var(--md-code-bg-color));
  border-color: var(--md-default-fg-color--lighter);
  color: var(--md-default-fg-color);
}
.rb-ctrl-btn.is-active {
  background: color-mix(in sRGB, var(--md-accent-fg-color) 13%, transparent);
  border-color: var(--md-accent-fg-color);
  color: var(--md-accent-fg-color);
}

/* Compound display row */
.rb-display {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .4rem;
  min-height: 2rem;
}

.rb-word {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--md-accent-fg-color);
  letter-spacing: .02em;
}

.rb-parse {
  font-size: .9rem;
  color: var(--md-default-fg-color--lighter);
}

.rb-placeholder {
  color: var(--md-default-fg-color--lightest);
  font-size: .9rem;
}

.rb-icon-btn, .rb-clear-btn {
  background: transparent;
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 4px;
  color: var(--md-default-fg-color--light);
  cursor: pointer;
  font-size: .8rem;
  padding: .15rem .45rem;
  transition: border-color .15s, color .15s;
}
.rb-icon-btn:hover, .rb-clear-btn:hover {
  border-color: var(--md-code-hl-keyword-color);
  color: var(--md-code-hl-keyword-color);
}
.rb-clear-btn { margin-left: auto; }

/* Main layout: palette full-width top, chain + lookup 50/50 below */
.rb-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.rb-panel--palette {
  grid-column: 1 / -1;
}

@media (max-width: 560px) {
  .rb-main { grid-template-columns: 1fr; }
}

.rb-panel {
  background: var(--md-code-bg-color);
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 6px;
  padding: .75rem;
}

.rb-panel-title {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--md-default-fg-color--lighter);
  margin-bottom: .6rem;
  padding-bottom: .3rem;
  border-bottom: 1px solid var(--md-typeset-table-color);
}

.rb-empty {
  color: var(--md-default-fg-color--lightest);
  font-size: .85rem;
  margin: 0;
}

/* Family filter strip */
.rb-family-strip {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem;
  margin-bottom: .6rem;
}

.rb-fam-btn {
  background: transparent;
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 4px;
  color: var(--md-default-fg-color--lighter);
  cursor: pointer;
  font-size: .75rem;
  padding: .15rem .4rem;
  transition: border-color .15s, color .15s;
}
.rb-fam-btn:hover {
  color: var(--md-default-fg-color);
  border-color: var(--fam-color, var(--md-default-fg-color--lighter));
}
.rb-fam-btn.is-active {
  border-color: var(--fam-color, var(--md-accent-fg-color));
  color: var(--fam-color, var(--md-accent-fg-color));
  background: color-mix(in sRGB, var(--fam-color, var(--md-accent-fg-color)) 12%, transparent);
}

/* Root button grid */
.rb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: .3rem;
}

.rb-root-btn {
  background: color-mix(in sRGB, var(--root-color, var(--md-default-fg-color--lighter)) 14%, var(--md-code-bg-color));
  border: 1px solid var(--root-color, var(--md-typeset-table-color));
  border-radius: 5px;
  color: var(--root-color, var(--md-default-fg-color));
  cursor: pointer;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: .4rem;
  padding: .2rem .5rem;
  transition: background .15s, transform .1s;
  font-size: .9rem;
  font-weight: 600;
  line-height: 1;
  width: 100%;
  text-align: left;
}
.rb-root-btn:hover {
  background: color-mix(in sRGB, var(--root-color, var(--md-default-fg-color--lighter)) 28%, var(--md-code-bg-color));
  transform: translateY(-1px);
}
.rb-root-btn .rb-root-gloss {
  font-size: .55rem;
  font-weight: 400;
  color: var(--md-default-fg-color--light);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.25;
}

/* Chain chips */
.rb-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-bottom: .6rem;
}

.rb-chip {
  display: flex;
  align-items: center;
  gap: .3rem;
  background: color-mix(in sRGB, var(--chip-color, var(--md-default-fg-color--lighter)) 15%, var(--md-code-bg-color));
  border: 1px solid var(--chip-color, var(--md-typeset-table-color));
  border-radius: 5px;
  padding: .25rem .5rem;
}

.rb-chip--modifier {
  background: color-mix(in sRGB, var(--md-accent-fg-color) 8%, transparent);
  border-color: color-mix(in sRGB, var(--md-accent-fg-color) 40%, transparent);
  --chip-color: var(--md-accent-fg-color);
}

.rb-chip-cv {
  color: var(--chip-color, var(--md-default-fg-color));
  font-weight: 700;
  font-size: .95rem;
}

.rb-chip-gloss {
  color: var(--md-default-fg-color--light);
  font-size: .7rem;
}

.rb-chip-rm {
  background: transparent;
  border: none;
  color: var(--md-default-fg-color--lightest);
  cursor: pointer;
  font-size: .85rem;
  line-height: 1;
  padding: 0 .1rem;
  transition: color .15s;
}
.rb-chip-rm:hover { color: var(--md-code-hl-keyword-color); }

.rb-juncture {
  background: transparent;
  border: 1px dashed var(--md-default-fg-color--lightest);
  border-radius: 3px;
  color: var(--md-default-fg-color--lightest);
  cursor: pointer;
  font-size: .85rem;
  line-height: 1;
  padding: .15rem .25rem;
  transition: color .15s, border-color .15s;
  align-self: center;
}
.rb-juncture:hover {
  color: var(--md-accent-fg-color);
  border-color: var(--md-accent-fg-color);
}
.rb-juncture.is-active {
  color: var(--md-accent-fg-color);
  border-color: var(--md-accent-fg-color);
  background: color-mix(in sRGB, var(--md-accent-fg-color) 13%, transparent);
}

.rb-gloss-line {
  color: var(--md-default-fg-color--lighter);
  font-size: .8rem;
  margin: 0;
}

/* Lookup panel */
.rb-free {
  background: color-mix(in sRGB, var(--md-code-hl-special-color) 10%, transparent);
  border: 1px solid color-mix(in sRGB, var(--md-code-hl-special-color) 33%, transparent);
  border-radius: 5px;
  color: var(--md-code-hl-special-color);
  font-size: .85rem;
  padding: .5rem .75rem;
}

.rb-subhead {
  color: var(--md-default-fg-color--lighter);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin: .5rem 0 .3rem;
}

.rb-entry-card {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .2rem .3rem;
  padding: .3rem 0;
  border-bottom: 1px solid var(--md-typeset-table-color);
  font-size: .85rem;
}
.rb-entry-card:last-child { border-bottom: none; }

.rb-entry-word {
  color: var(--md-accent-fg-color);
  font-weight: 600;
  text-decoration: none;
}
.rb-entry-word:hover { text-decoration: underline; }

.rb-entry-sep { color: var(--md-typeset-table-color); }

.rb-entry-gloss { color: var(--md-default-fg-color--light); flex: 1; }

.rb-entry-wnum {
  color: var(--md-typeset-table-color);
  font-size: .72rem;
  margin-left: auto;
}

/* ── Speaker buttons (Web Speech API) ────────────────────── */
.tonesu-speaker {
  display: inline-block;
  width: auto;
  height: auto;
  padding: 0;
  margin: 0 0.15em 0 0;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--md-typeset-a-color);
  font-size: 0.85em;
  vertical-align: middle;
  line-height: 1;
  user-select: none;
}

.tonesu-speaker:hover {
  opacity: 0.7;
}

.tonesu-speaker:active {
  opacity: 0.5;
}

.tonesu-speaker.speaking {
  color: var(--md-accent-fg-color);
}

/* ── Word-page metadata table (Domain / Class / Type / …) ── */
/* Markdown requires a header row, but these tables use empty <th> cells.
   Hide the blank header and style the label column as property keys.       */
.md-typeset table:has(> thead > tr > th:empty) {
  font-size: 0.82rem;
  border-top: none;
  width: auto;
  min-width: 24rem;
}
.md-typeset table:has(> thead > tr > th:empty) thead {
  display: none;
}
.md-typeset table:has(> thead > tr > th:empty) td:first-child {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--md-default-fg-color--light);
  white-space: nowrap;
  width: 1%;
  padding-right: 1.5rem;
  vertical-align: top;
}
.md-typeset table:has(> thead > tr > th:empty) td {
  border-bottom: 1px solid var(--md-typeset-table-color);
}
.md-typeset table:has(> thead > tr > th:empty) tbody tr:first-child td {
  border-top: 1px solid var(--md-typeset-table-color);
}

/* ── Homepage word-family and scope demo grids ─────────── */
.tn-family-grid,
.tn-scope-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.5rem;
  margin: 1.25rem 0;
}

@media (max-width: 860px) {
  .tn-family-grid,
  .tn-scope-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .tn-family-grid,
  .tn-scope-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.tn-family-cell,
.tn-scope-cell {
  background: var(--md-code-bg-color);
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 0.4rem;
  padding: 0.6rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.18rem;
}

.tn-family-cell--root,
.tn-scope-cell--base {
  border-color: var(--md-accent-fg-color);
}

.tn-family-word,
.tn-scope-word {
  font-family: var(--tonesu-font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--md-accent-fg-color);
  line-height: 1.15;
}

.tn-family-parse {
  font-family: var(--tonesu-font-mono);
  font-size: 0.67rem;
  color: var(--md-default-fg-color--lighter);
}

.tn-scope-label {
  font-size: 0.63rem;
  font-weight: 600;
  color: var(--md-default-fg-color--lighter);
  letter-spacing: 0.01em;
}

.tn-family-gloss,
.tn-scope-gloss {
  font-size: 0.72rem;
  color: var(--md-default-fg-color--light);
  line-height: 1.3;
  margin-top: auto;
}

/* ── Homepage "How it works" example grid ─────────────── */
.tn-example-grid {
  display: grid !important;
  grid-template-columns: repeat(4, 1fr) !important;
  gap: 0.75rem;
  margin: 1rem 0;
}

@media (max-width: 680px) {
  .tn-example-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (max-width: 400px) {
  .tn-example-grid {
    grid-template-columns: 1fr !important;
  }
}

/* Strip code-block chrome from root-list blocks in example cards.
   Keep monospace + content, ditch the box and overflow behaviour. */
.tn-example-grid pre {
  background: transparent;
  border-left: 2px solid var(--md-accent-fg-color);
  border-radius: 0;
  box-shadow: none;
  padding: 0.3rem 0 0.3rem 0.65rem;
  margin: 0 0 0.6rem;
  overflow: visible;
  white-space: normal;
}

.tn-example-grid pre > code {
  background: transparent;
  padding: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--md-default-fg-color);
}

/* ── Front-page showcase block ──────────────────────────── */
.tn-showcase {
  border-left: 3px solid var(--md-accent-fg-color);
  background: var(--md-code-bg-color);
  padding: 1.25rem 1.5rem;
  margin: 1rem 0;
  border-radius: 0 .3rem .3rem 0;
}

.tn-showcase blockquote {
  border-left: none;
  background: transparent;
  padding: 0;
  margin: 0 0 .75rem;
  font-size: 1.05rem;
  font-style: italic;
  color: var(--md-accent-fg-color);
}

.tn-showcase p {
  margin: .5rem 0;
}

.tn-showcase code {
  font-size: .9em;
}

/* ── Learn section — fill-in-the-blank chip picker ───────── */

.tn-learn-picker.lp-wrap {
  margin: .8rem 0 1rem;
}

/* Template line: monospace code block look */
.lp-template-line {
  font-family: var(--tonesu-font-mono);
  font-size: 1em;
  background: var(--md-code-bg-color);
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 5px;
  padding: .55rem .85rem;
  margin-bottom: .6rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--md-code-fg-color);
}

/* Blank slot */
.lp-slot {
  display: inline-block;
  min-width: 2.4em;
  text-align: center;
  border-bottom: 2px solid var(--md-accent-fg-color);
  padding: 0 .15em;
  margin: 0 .1em;
  font-style: normal;
  transition: background .15s, color .15s, border-color .15s;
}

.lp-slot--empty,
.lp-slot--inactive {
  color: var(--md-default-fg-color--lighter);
}

/* Active slot in multi-blank: slightly brighter, subtle pulse border */
.lp-slot--active {
  color: var(--md-default-fg-color--light);
  border-color: var(--md-accent-fg-color);
  border-bottom-width: 2px;
  outline: 1px dashed var(--md-accent-fg-color);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Inactive slots (future) in multi-blank: dimmer border */
.lp-slot--inactive {
  border-color: var(--md-default-fg-color--lightest);
  opacity: .6;
}

.lp-slot--filled {
  color: var(--md-accent-fg-color);
  border-color: var(--md-accent-fg-color);
}

.lp-slot--correct {
  color: #7bd88f;
  border-color: #7bd88f;
  background: color-mix(in sRGB, #7bd88f 12%, transparent);
  border-radius: 3px;
}

.lp-slot--wrong {
  color: #fc618d;
  border-color: #fc618d;
  background: color-mix(in sRGB, #fc618d 12%, transparent);
  border-radius: 3px;
}

/* Chip row */
.lp-chips {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin-bottom: .5rem;
}

/* Individual chip */
.lp-chip {
  display: inline-flex;
  align-items: center;
  gap: .3em;
  padding: .28rem .65rem;
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 999px;
  background: var(--md-code-bg-color);
  color: var(--md-default-fg-color);
  font-family: inherit;
  font-size: .85rem;
  cursor: pointer;
  user-select: none;
  transition: border-color .15s, background .15s, color .15s, opacity .15s;
  line-height: 1.4;
}

.lp-chip:hover:not(:disabled) {
  border-color: var(--md-accent-fg-color);
  background: color-mix(in sRGB, var(--md-accent-fg-color) 10%, var(--md-code-bg-color));
}

.lp-chip:disabled {
  opacity: .45;
  cursor: default;
}

.lp-chip--selected {
  border-color: var(--md-accent-fg-color);
  background: color-mix(in sRGB, var(--md-accent-fg-color) 14%, var(--md-code-bg-color));
}

.lp-chip--correct {
  border-color: #7bd88f;
  background: color-mix(in sRGB, #7bd88f 15%, var(--md-code-bg-color));
  color: #7bd88f;
}

.lp-chip--wrong {
  border-color: #fc618d;
  background: color-mix(in sRGB, #fc618d 12%, var(--md-code-bg-color));
  color: #fc618d;
}

/* Chip content */
.lp-chip-form {
  font-family: var(--tonesu-font-mono);
  font-size: 1em;
  color: var(--md-accent-fg-color);
  /* inherit any correct/wrong color override from parent */
}
.lp-chip--correct .lp-chip-form,
.lp-chip--wrong   .lp-chip-form { color: inherit; }

.lp-chip-gloss {
  font-size: .8em;
  color: var(--md-default-fg-color--light);
}
.lp-chip--correct .lp-chip-gloss,
.lp-chip--wrong   .lp-chip-gloss { color: inherit; opacity: .85; }

.lp-chip-sep {
  font-size: .75em;
  color: var(--md-default-fg-color--lightest);
  line-height: 1;
}

/* Feedback line */
.lp-feedback {
  font-size: .82rem;
  padding: .3rem 0;
  min-height: 1.4em;
}

.lp-feedback--correct {
  color: #7bd88f;
}

.lp-feedback--wrong {
  color: #fc618d;
}

/* ── Exercise question admonition — purple instead of default green ── */
[data-md-color-scheme="slate"] .md-typeset .admonition.question,
[data-md-color-scheme="slate"] .md-typeset details.question {
  border-color: #948ae3;
}
[data-md-color-scheme="slate"] .md-typeset .question > .admonition-title,
[data-md-color-scheme="slate"] .md-typeset .question > summary {
  background-color: color-mix(in sRGB, #948ae3 12%, transparent);
}
[data-md-color-scheme="slate"] .md-typeset .question > .admonition-title::before,
[data-md-color-scheme="slate"] .md-typeset .question > summary::before {
  background-color: #948ae3;
}

[data-md-color-scheme="default"] .md-typeset .admonition.question,
[data-md-color-scheme="default"] .md-typeset details.question {
  border-color: #6851a2;
}
[data-md-color-scheme="default"] .md-typeset .question > .admonition-title,
[data-md-color-scheme="default"] .md-typeset .question > summary {
  background-color: color-mix(in sRGB, #6851a2 12%, transparent);
}
[data-md-color-scheme="default"] .md-typeset .question > .admonition-title::before,
[data-md-color-scheme="default"] .md-typeset .question > summary::before {
  background-color: #6851a2;
}

/* ── Learn section — multiple-choice question widget ─────── */
.tn-learn-mcq {
  margin: .8rem 0 1rem;
}

.lp-mcq-options {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-bottom: .5rem;
}

.lp-mcq-option {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  width: 100%;
  padding: .5rem .75rem;
  border: 1px solid var(--md-typeset-table-color);
  border-radius: 6px;
  background: var(--md-code-bg-color);
  color: var(--md-default-fg-color);
  font-family: inherit;
  font-size: .7rem;
  text-align: left;
  cursor: pointer;
  transition: border-color .15s, background .15s;
  line-height: 1.5;
}

.lp-mcq-option:hover:not(:disabled) {
  border-color: var(--md-accent-fg-color);
  background: color-mix(in sRGB, var(--md-accent-fg-color) 8%, var(--md-code-bg-color));
}

.lp-mcq-option:disabled {
  opacity: .55;
  cursor: default;
}

.lp-mcq-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.5em;
  height: 1.5em;
  border-radius: 4px;
  border: 1px solid var(--md-typeset-table-color);
  font-size: .78rem;
  font-weight: 700;
  color: var(--md-default-fg-color--light);
  flex-shrink: 0;
  margin-top: .05em;
}

.lp-mcq-text {
  flex: 1;
}

.lp-mcq-option--selected .lp-mcq-label {
  border-color: var(--md-accent-fg-color);
  color: var(--md-accent-fg-color);
}

.lp-mcq-option--correct {
  border-color: #7bd88f;
  background: color-mix(in sRGB, #7bd88f 12%, var(--md-code-bg-color));
}
.lp-mcq-option--correct .lp-mcq-label {
  border-color: #7bd88f;
  color: #7bd88f;
}

.lp-mcq-option--wrong {
  border-color: #fc618d;
  background: color-mix(in sRGB, #fc618d 10%, var(--md-code-bg-color));
}
.lp-mcq-option--wrong .lp-mcq-label {
  border-color: #fc618d;
  color: #fc618d;
}