/* ============================================================
   Compatibility table (unlayered → always wins over the framework).
   Loaded only by compat.html. Reuses the shared docs chrome
   (docs-chrome.css + playground.css) and styles the filter bar,
   helper-word chips, the combination rows, and the applicability grid.
   Tokens drive every colour/length; no new tokens, no corner-shape.
   ============================================================ */

/* ---------- Filter toolbar (sticky under the app bar) ---------- */
.compat-toolbar {
  display: flex;
  position: sticky;
  z-index: 5;
  inset-block-start: 0;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4) var(--space-5);
  margin-block-end: var(--space-7);
  padding-block: var(--space-4);
  border-block-end: var(--border-hair) solid var(--hairline-strong);
  background-color: color-mix(in srgb, var(--bg-void) 88%, transparent);
  backdrop-filter: blur(8px);
}

/* In-page jumps (nav links, "combines with" chips) must clear the sticky
   toolbar. compat.js measures the bar into --compat-scroll-offset; the gap
   keeps a little breathing room below it. */
.compat-card,
.compat-combo__row,
:is(#doc-main, #compat-main) > section {
  scroll-margin-block-start: calc(var(--compat-scroll-offset, 6rem) + var(--space-6));
}

.compat-search {
  display: inline-flex;
  flex: 1 1 16rem;
  align-items: center;
  gap: var(--space-3);
  color: var(--text-muted);
}

.compat-search > i {
  font-family: var(--font-icon);
  font-size: var(--fs-lg);
}

.compat-search input {
  flex: 1 1 auto;
  min-inline-size: 0;
}

.compat-filter {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.compat-filter__label {
  margin-inline-end: var(--space-2);
  color: var(--text-faint);
  font-size: var(--fs-2xs);
  font-family: var(--font-display);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
}

/* Reset the bare <button> from the library's outline-button look down to a
   compact, quiet filter pill. Unlayered, so it beats the layered :where(). */
.compat-toggle {
  display: inline-flex;
  align-items: center;
  padding-block: 4px;
  padding-inline: 10px;
  border: var(--border-hair) solid var(--hairline-strong);
  background-color: transparent;
  color: var(--text-secondary);
  font-weight: var(--fw-medium);
  font-size: var(--fs-2xs);
  line-height: 1.4;
  font-family: var(--font-mono);
  letter-spacing: var(--ls-normal);
  text-transform: none;
  cursor: pointer;
  transition:
    border-color var(--dur-fast) var(--ease-hud),
    color var(--dur-fast) var(--ease-hud),
    background-color var(--dur-fast) var(--ease-hud);
}

.compat-toggle:hover {
  border-color: var(--hairline-accent);
  color: var(--text-primary);
}

.compat-toggle.is-on {
  border-color: var(--cyan-400);
  background-color: color-mix(in srgb, var(--cyan-400) 14%, transparent);
  color: var(--cyan-200);
}

.compat-clear {
  margin-inline-start: auto;
}

/* Per-kind accent, shared by the chips AND the Kind filter dots so the
   colour→concept link is taught in both places from one source of truth. */
.compat-chip[data-kind='tone'],
.compat-toggle[data-kind='tone'] { --_c: var(--cyan-400); }
.compat-chip[data-kind='size'],
.compat-toggle[data-kind='size'] { --_c: var(--amber-400); }
.compat-chip[data-kind='shape'],
.compat-toggle[data-kind='shape'] { --_c: var(--green-400); }
.compat-chip[data-kind='depth'],
.compat-toggle[data-kind='depth'] { --_c: var(--slate-300); }
.compat-chip[data-kind='layout'],
.compat-toggle[data-kind='layout'] { --_c: var(--cyan-200); }
.compat-chip[data-kind='state'],
.compat-toggle[data-kind='state'] { --_c: var(--amber-300); }
.compat-chip[data-kind='modifier'],
.compat-toggle[data-kind='modifier'] { --_c: var(--slate-200); }

/* A leading dot on each Kind toggle echoes the chip colour it filters. */
.compat-toggle[data-kind]::before {
  content: '';
  inline-size: 8px;
  block-size: 8px;
  margin-inline-end: 6px;
  border-radius: var(--radius-pill);
  background-color: var(--_c, var(--slate-300));
}

/* ---------- Colour key (legend) ---------- */
.compat-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-5);
  margin-block-end: var(--space-5);
  padding: var(--space-4);
  border: var(--border-hair) solid var(--hairline);
  background-color: var(--surface-inset);
}

.compat-legend__title {
  color: var(--text-faint);
  font-size: var(--fs-2xs);
  font-family: var(--font-display);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
}

.compat-legend__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.compat-legend__desc {
  color: var(--text-muted);
  font-size: var(--fs-2xs);
}

/* ---------- Group headings ---------- */
.compat-group__title {
  margin-block: var(--space-6) var(--space-4);
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  font-family: var(--font-display);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
}

.compat-group:first-of-type .compat-group__title {
  margin-block-start: 0;
}

/* ---------- Component cards ---------- */
.compat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 21rem), 1fr));
  gap: var(--space-4);
}

.compat-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  border: var(--border-hair) solid var(--hairline);
  background-color: var(--surface-panel);
}

.compat-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}

.compat-card__head h4 {
  margin: 0;
  color: var(--text-primary);
  font-size: var(--fs-base);
  font-family: var(--font-display);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}

.compat-card__links {
  display: inline-flex;
  flex: none;
  gap: var(--space-3);
  font-size: var(--fs-2xs);
  font-family: var(--font-mono);
}

.compat-card__links a {
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
}

.compat-card__links a:hover {
  color: var(--cyan-400);
}

.compat-card__trigger {
  display: block;
  padding-block: 6px;
  padding-inline: 8px;
  border-inline-start: 2px solid var(--hairline-accent);
  background-color: var(--surface-inset);
  color: var(--text-secondary);
  font-size: var(--fs-xs);
  line-height: var(--lh-mono);
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.compat-card__none {
  margin: 0;
  color: var(--text-faint);
  font-size: var(--fs-xs);
  font-style: italic;
}

/* Opt-in add-on marker: the import subpath that ships the component. */
.compat-card__ext {
  display: inline-block;
  inline-size: fit-content;
  padding-block: 2px;
  padding-inline: 8px;
  border: var(--border-hair) solid color-mix(in srgb, var(--amber-500) 45%, transparent);
  background-color: color-mix(in srgb, var(--amber-500) 8%, transparent);
  color: var(--amber-400);
  font-size: var(--fs-2xs);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  cursor: help;
}

/* ---------- Helper-word chips (toned by kind) ---------- */
.compat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.compat-chip {
  --_c: var(--slate-300);
  display: inline-flex;
  align-items: center;
  padding-block: 3px;
  padding-inline: 8px;
  border: var(--border-hair) solid color-mix(in srgb, var(--_c) 45%, transparent);
  background-color: color-mix(in srgb, var(--_c) 12%, transparent);
  color: var(--_c);
  font-size: var(--fs-2xs);
  line-height: 1.3;
  font-family: var(--font-mono);
  cursor: default;
}

.compat-chip--link {
  --_c: var(--cyan-400);
  text-decoration: none;
  cursor: pointer;
}

.compat-chip--link:hover {
  background-color: color-mix(in srgb, var(--cyan-400) 22%, transparent);
  color: var(--cyan-200);
}

.compat-chip--conflict {
  --_c: var(--red-400);
  text-transform: none;
}

/* "✓ verified" — this combine/conflict is proven by the CSS-truth probe
   (docs/compat-facts.json), not just hand-asserted. A leading tick + a green
   rim lift it above the unverified chips; hover shows the evidence. */
.compat-chip.is-verified {
  border-color: color-mix(in srgb, var(--green-400) 55%, transparent);
  cursor: help;
}

.compat-chip.is-verified::before {
  content: '✓';
  margin-inline-end: 4px;
  color: var(--green-400);
  font-weight: 700;
}

/* ---------- Role badges (the semantics axis) ---------- */
/* The card head pairs the name with its role; keep them on one baseline-aligned
   group so the links stay pushed to the trailing edge. */
.compat-card__title {
  display: inline-flex;
  flex: 1 1 auto;
  align-items: baseline;
  gap: var(--space-3);
  min-inline-size: 0;
}

.compat-role {
  --_c: var(--slate-300);
  display: inline-flex;
  align-items: center;
  align-self: center;
  flex: none;
  padding-block: 2px;
  padding-inline: 7px;
  border: var(--border-hair) solid color-mix(in srgb, var(--_c) 45%, transparent);
  background-color: color-mix(in srgb, var(--_c) 12%, transparent);
  color: var(--_c);
  font-size: var(--fs-2xs);
  line-height: 1.3;
  font-family: var(--font-mono);
  text-transform: none;
  cursor: default;
}

/* element = the semantic-first happy path; wrapper = a layout box you nest into;
   class = an opt-in decorator. One accent each, reused by the card + the legend. */
.compat-role[data-role='element'] { --_c: var(--green-400); }
.compat-role[data-role='wrapper'] { --_c: var(--cyan-400); }
.compat-role[data-role='class'] { --_c: var(--slate-300); }

/* ---------- Knobs ---------- */
.compat-knobs {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px var(--space-3);
  margin: 0;
  padding-block-start: var(--space-2);
  border-block-start: var(--border-hair) solid var(--hairline);
}

.compat-knobs dt {
  color: var(--amber-400);
  font-size: var(--fs-2xs);
  font-family: var(--font-mono);
}

.compat-knobs dd {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--fs-2xs);
  text-align: start;
}

/* The library styles a bare <dl> as a bordered telemetry grid; the knob list
   is a plain two-column readout, so drop the inherited cell rules/borders. */
.compat-knobs dt,
.compat-knobs dd {
  align-self: center;
  padding: 0;
  border: 0;
}

/* ---------- Combinations ---------- */
.compat-combo {
  display: flex;
  flex-direction: column;
  border: var(--border-hair) solid var(--hairline);
}

.compat-combo__row {
  display: grid;
  grid-template-columns: minmax(8rem, 12rem) 1fr;
  gap: var(--space-4);
  padding: var(--space-4);
  border-block-start: var(--border-hair) solid var(--hairline);
}

.compat-combo__row:first-child {
  border-block-start: 0;
}

.compat-combo__name a {
  color: var(--text-primary);
  font-size: var(--fs-sm);
  font-family: var(--font-display);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  text-decoration: none;
}

.compat-combo__name a:hover {
  color: var(--cyan-400);
}

.compat-combo__cells {
  display: grid;
  gap: var(--space-3);
}

.compat-combo__cell {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.compat-combo__tag {
  margin-inline-end: var(--space-2);
  color: var(--text-faint);
  font-size: var(--fs-2xs);
  font-family: var(--font-display);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
}

/* ---------- Semantic nesting (reuses the combination row grid) ---------- */
.compat-nest__markup {
  display: block;
  color: var(--cyan-200);
  font-size: var(--fs-xs);
  line-height: var(--lh-mono);
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.compat-nest__result {
  color: var(--text-primary);
  font-size: var(--fs-sm);
  font-family: var(--font-display);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
}

/* ---------- Utility applicability ---------- */
.compat-util {
  display: flex;
  flex-direction: column;
  border: var(--border-hair) solid var(--hairline);
}

.compat-util__row {
  display: grid;
  grid-template-columns: minmax(12rem, 18rem) 1fr;
  gap: var(--space-3) var(--space-5);
  align-items: start;
  padding: var(--space-4);
  border-block-start: var(--border-hair) solid var(--hairline);
}

.compat-util__row:first-child {
  border-block-start: 0;
}

.compat-util__label {
  color: var(--cyan-200);
  font-size: var(--fs-xs);
  line-height: var(--lh-mono);
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.compat-util__groups {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.compat-grouptag {
  padding-block: 2px;
  padding-inline: 8px;
  border: var(--border-hair) solid var(--hairline);
  color: var(--text-faint);
  font-size: var(--fs-2xs);
  font-family: var(--font-mono);
  opacity: 0.5;
}

.compat-grouptag.is-on {
  border-color: var(--green-500);
  background-color: color-mix(in srgb, var(--green-500) 12%, transparent);
  color: var(--green-400);
  opacity: 1;
}

.compat-util__note {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--text-muted);
  font-size: var(--fs-xs);
}

/* ---------- Empty state ---------- */
.compat-empty {
  padding-block: var(--space-9);
  color: var(--text-muted);
  font-family: var(--font-mono);
  text-align: center;
}

/* ---------- Narrow screens ---------- */
@media (max-width: 40rem) {
  .compat-toolbar {
    gap: var(--space-3);
  }

  .compat-clear {
    margin-inline-start: 0;
  }

  .compat-combo__row,
  .compat-util__row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
}