/* ==========================================================================
   Site styles — base, layout, components, utilities.
   Layer order is declared in tokens.css. Uses native CSS nesting, container
   queries, :has(), @starting-style and scroll-driven animations; everything
   degrades to a plain, readable page in older browsers.
   ========================================================================== */

/* ---- Cross-document view transitions (Chrome, Safari; Firefox ignores) --- */
@view-transition { navigation: auto; }

::view-transition-old(root),
::view-transition-new(root) { animation-duration: var(--dur-med); }

@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(*),
  ::view-transition-old(*),
  ::view-transition-new(*) { animation: none !important; }
}

/* ======================================================================== */
@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  * { margin: 0; }
  html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
  body { min-height: 100dvh; }
  img, picture, svg, video, canvas { display: block; max-width: 100%; }
  img { height: auto; }
  input, button, textarea, select { font: inherit; color: inherit; }
  p, h1, h2, h3, h4, h5, h6, li, dd, dt, figcaption { overflow-wrap: break-word; }
  table { border-collapse: collapse; }
  [hidden] { display: none !important; }
}

/* ======================================================================== */
@layer base {
  html {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-text);
    font-size: 100%;
    line-height: var(--leading);
    font-optical-sizing: auto;
    font-kerning: normal;
    font-variant-numeric: proportional-nums oldstyle-nums;
    scroll-padding-top: 5rem;
    hanging-punctuation: first last;
  }
  @media (prefers-reduced-motion: no-preference) {
    html:focus-within { scroll-behavior: smooth; }
  }

  body {
    background: var(--bg);
    font-size: var(--step-0);
    display: flex;
    flex-direction: column;
  }
  main { flex: 1; }

  h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: var(--display-weight);
    letter-spacing: var(--display-tracking);
    line-height: var(--leading-tight);
    text-wrap: balance;
    font-variant-numeric: lining-nums;
  }
  h1 { font-size: var(--step-5); }
  h2 { font-size: var(--step-3); }
  h3 { font-size: var(--step-2); }
  h4 { font-size: var(--step-1); }
  h5, h6 {
    font-family: var(--font-ui);
    font-size: var(--step--1);
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
  }
  p, li { text-wrap: pretty; max-width: var(--measure); }

  a {
    color: var(--accent);
    text-decoration-line: underline;
    text-decoration-thickness: .06em;
    text-decoration-color: color-mix(in oklch, currentColor 40%, transparent);
    text-underline-offset: .2em;
    transition: text-decoration-color var(--dur-fast), color var(--dur-fast);
    &:hover { text-decoration-color: currentColor; color: var(--accent-strong); }
  }

  :focus-visible {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
    border-radius: var(--radius-s);
  }
  ::selection { background: var(--selection); }

  hr {
    border: 0;
    height: var(--hairline);
    background: var(--border);
    margin-block: var(--space-l);
  }

  strong, b { font-weight: 650; }
  small { font-size: var(--step--1); }
  abbr[title] { text-decoration: underline dotted; cursor: help; }
  code, kbd, samp { font-family: ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace; font-size: .9em; }

  /* Figures: tables, specs, dates and numbers are tabular and lining. */
  table, time, .num, dl.specs dd, [data-num] {
    font-variant-numeric: tabular-nums lining-nums;
  }
}

/* ======================================================================== */
@layer layout {
  .container {
    width: min(100% - 2 * var(--gutter), var(--page-max));
    margin-inline: auto;
  }
  .container--narrow { width: min(100% - 2 * var(--gutter), 46rem); margin-inline: auto; }

  .stack > * + * { margin-block-start: var(--stack-space, var(--space-s)); }
  .stack-l { --stack-space: var(--space-l); }
  .stack-xl { --stack-space: var(--space-xl); }

  .cluster {
    display: flex;
    flex-wrap: wrap;
    gap: var(--cluster-gap, var(--space-xs));
    align-items: center;
  }

  .grid {
    display: grid;
    gap: var(--grid-gap, var(--space-m));
    grid-template-columns: repeat(auto-fill, minmax(min(100%, var(--grid-min, 16rem)), 1fr));
  }

  .with-sidebar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
    & > :first-child { flex: 1 1 16rem; }
    & > :last-child { flex: 999 1 30rem; min-width: 0; }
  }

  .section { padding-block: var(--space-2xl); }
  .section + .section { border-top: var(--hairline) solid var(--border); }

  /* ---- Skip link ---- */
  .skip-link {
    position: absolute;
    inset-inline-start: var(--space-s);
    inset-block-start: -10rem;
    z-index: 100;
    padding: var(--space-2xs) var(--space-s);
    background: var(--accent);
    color: var(--on-accent);
    font-family: var(--font-ui);
    font-weight: 600;
    &:focus { inset-block-start: var(--space-s); }
  }

  /* ---- Header ---- */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: color-mix(in oklch, var(--bg) 88%, transparent);
    backdrop-filter: saturate(1.4) blur(10px);
    border-bottom: var(--hairline) solid var(--border);
    view-transition-name: site-header;
  }
  .site-header__inner {
    display: flex;
    align-items: center;
    gap: var(--space-s);
    min-height: 4rem;
  }
  .wordmark {
    font-family: var(--font-display);
    font-size: var(--step-1);
    font-weight: 500;
    letter-spacing: .02em;
    color: var(--text);
    text-decoration: none;
    white-space: nowrap;
    margin-inline-end: auto;
    &:hover { color: var(--accent); }
  }
  .header-actions { display: flex; align-items: center; gap: var(--space-3xs); }

  /* Main navigation: inline on wide screens, a popover menu on narrow ones. */
  .site-nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    gap: var(--space-3xs) var(--space-s);
  }
  .site-nav a {
    display: block;
    white-space: nowrap;
    padding: var(--space-3xs) 0;
    font-family: var(--font-ui);
    font-size: var(--step--1);
    letter-spacing: .06em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--text-muted);
    border-bottom: 1px solid transparent;
    &:hover { color: var(--text); }
    &[aria-current="page"], &[aria-current="true"] { color: var(--text); border-bottom-color: var(--metal); }
  }
  @media (width < 70rem) {
    .site-nav[popover] {
      inset: 4rem 0 auto auto;
      margin: 0;
      width: min(20rem, 100vw);
      max-height: calc(100dvh - 4rem);
      overflow: auto;
      padding: var(--space-s) var(--space-m) var(--space-m);
      background: var(--bg);
      color: var(--text);
      border: var(--hairline) solid var(--border);
      box-shadow: var(--shadow-m);
      opacity: 1;
      translate: 0 0;
      transition: opacity var(--dur-med) var(--ease-out), translate var(--dur-med) var(--ease-out), display var(--dur-med) allow-discrete, overlay var(--dur-med) allow-discrete;
      @starting-style { opacity: 0; translate: 0 -.5rem; }
      &:not(:popover-open) { opacity: 0; translate: 0 -.5rem; }
      & ul { flex-direction: column; }
      & a { font-size: var(--step-0); padding-block: var(--space-2xs); border-bottom: var(--hairline) solid var(--border); }
    }
  }
  @media (width >= 70rem) {
    /* Override the popover UA hiding so the nav is part of the header. */
    .site-nav[popover] {
      display: block;
      position: static;
      inset: auto;
      margin: 0;
      padding: 0;
      border: 0;
      background: none;
      color: inherit;
      overflow: visible;
    }
  }

  /* ---- Footer ---- */
  .site-footer {
    margin-top: var(--space-3xl);
    background: var(--dial-deep);
    color: var(--on-dial-muted);
    padding-block: var(--space-2xl) var(--space-xl);
    font-size: var(--step--1);
    & a { color: var(--on-dial); }
    & .wordmark { color: var(--on-dial); font-size: var(--step-2); }
    & :focus-visible { outline-color: var(--metal-on-dial); }
  }
  .footer-grid {
    display: grid;
    gap: var(--space-l);
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 11rem), 1fr));
    & h2 {
      font-family: var(--font-ui);
      font-size: var(--step--2);
      font-weight: 600;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--metal-on-dial);
      margin-bottom: var(--space-xs);
    }
    & ul { list-style: none; padding: 0; display: grid; gap: var(--space-3xs); }
    & a { text-decoration: none; &:hover { text-decoration: underline; } }
  }
  .footer-base {
    margin-top: var(--space-xl);
    padding-top: var(--space-m);
    border-top: var(--hairline) solid color-mix(in oklch, var(--on-dial) 18%, transparent);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-s);
    justify-content: space-between;
  }

  /* ---- Page heading ---- */
  .page-head {
    padding-block: var(--space-xl) var(--space-l);
    border-bottom: var(--hairline) solid var(--border);
    margin-bottom: var(--space-l);
    & .lead { margin-top: var(--space-xs); }
  }
}

/* ======================================================================== */
@layer components {

  /* ---- Typographic details ---- */
  .eyebrow {
    font-family: var(--font-ui);
    font-size: var(--step--2);
    font-weight: 600;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--metal);
  }
  .lead { font-size: var(--step-1); color: var(--text-muted); line-height: 1.5; }
  .muted { color: var(--text-muted); }
  .display { font-family: var(--font-display); font-weight: var(--display-weight); }

  /* A hairline ornament: brass rule with a small lozenge at its centre. */
  .rule {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--metal);
    margin-block: var(--space-l);
    &::before, &::after { content: ""; flex: 1; height: var(--hairline); background: currentColor; opacity: .6; }
    & > span { width: .4rem; height: .4rem; rotate: 45deg; border: var(--hairline) solid currentColor; }
  }

  /* Reference numbers: set like an auction-catalogue lot reference. */
  .ref {
    font-family: var(--font-ui);
    font-variant-numeric: tabular-nums lining-nums slashed-zero;
    font-feature-settings: "case" 1;
    font-weight: 500;
    letter-spacing: .07em;
    text-transform: uppercase;
    white-space: nowrap;
    padding: .08em .45em .02em;
    border: var(--hairline) solid color-mix(in oklch, var(--metal) 70%, transparent);
    border-radius: var(--radius-s);
    color: var(--text);
    background: color-mix(in oklch, var(--metal) 6%, transparent);
    font-size: .88em;
  }
  .ref--plain { border: 0; background: none; padding: 0; }
  .ref--lg { font-size: var(--step-1); padding: .12em .55em .06em; }
  .lot {
    font-family: var(--font-ui);
    font-size: var(--step--2);
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--text-muted);
    font-variant-numeric: tabular-nums lining-nums;
  }

  /* ---- Buttons ---- */
  .btn {
    --btn-bg: var(--accent);
    --btn-fg: var(--on-accent);
    --btn-border: var(--accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xs);
    min-height: 2.75rem;          /* 44px touch target */
    padding: .55em 1.2em;
    font-family: var(--font-ui);
    font-size: var(--step--1);
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    text-decoration: none;
    line-height: 1.1;
    color: var(--btn-fg);
    background: var(--btn-bg);
    border: var(--hairline) solid var(--btn-border);
    border-radius: var(--radius-s);
    cursor: pointer;
    transition: background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast), translate var(--dur-fast);
    &:hover { --btn-bg: var(--accent-strong); --btn-border: var(--accent-strong); color: var(--btn-fg); }
    &:active { translate: 0 1px; }
    &:disabled, &[aria-disabled="true"] { opacity: .5; cursor: not-allowed; }
    & svg { width: 1.1em; height: 1.1em; flex: none; }
  }
  .btn--secondary {
    --btn-bg: transparent;
    --btn-fg: var(--text);
    --btn-border: var(--border-strong);
    &:hover { --btn-bg: var(--surface); --btn-border: var(--text); }
  }
  .btn--ghost {
    --btn-bg: transparent;
    --btn-fg: var(--text);
    --btn-border: transparent;
    &:hover { --btn-bg: var(--surface-2); --btn-border: transparent; }
  }
  /* For use on the dark dial band. */
  .btn--brass {
    --btn-bg: var(--metal-on-dial);
    --btn-border: var(--metal-on-dial);
    --btn-fg: var(--dial-deep);
    &:hover { --btn-bg: var(--on-dial); --btn-border: var(--on-dial); --btn-fg: var(--dial-deep); }
  }
  .btn--danger { --btn-bg: var(--danger); --btn-border: var(--danger); --btn-fg: var(--bg); &:hover { --btn-bg: var(--danger); --btn-border: var(--text); } }
  .btn--small { min-height: 2.25rem; padding: .4em .9em; font-size: var(--step--2); }
  .btn--large { min-height: 3.25rem; padding: .7em 1.6em; font-size: var(--step-0); }
  .btn--icon { padding: 0; width: 2.75rem; min-height: 2.75rem; }
  .btn--icon.btn--small { width: 2.25rem; min-height: 2.25rem; }
  /* The menu button only exists on narrow screens (must follow .btn in this layer). */
  .nav-toggle { display: none; }
  @media (width < 70rem) { .nav-toggle { display: inline-flex; } }

  /* ---- Icons ---- */
  .icon { width: 1.25em; height: 1.25em; flex: none; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }

  /* ---- External & sponsored links ---- */
  a[rel~="external"]::after, a.external::after {
    content: "";
    display: inline-block;
    width: .7em;
    height: .7em;
    margin-inline-start: .25em;
    vertical-align: .05em;
    background: currentColor;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='black' stroke-width='1.6'%3E%3Cpath d='M6 3H3v10h10v-3M9 3h4v4M13 3 7 9'/%3E%3C/svg%3E") center / contain no-repeat;
    opacity: .7;
  }
  .sponsored-note {
    font-family: var(--font-ui);
    font-size: var(--step--2);
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--text-muted);
  }

  /* ---- Forms ---- */
  .field { display: grid; gap: var(--space-3xs); }
  .field + .field { margin-top: var(--space-s); }
  .label, .field > label, legend {
    font-family: var(--font-ui);
    font-size: var(--step--1);
    font-weight: 600;
    color: var(--text);
  }
  .hint { font-size: var(--step--1); color: var(--text-muted); }
  .required-mark { color: var(--danger); margin-inline-start: .15em; }

  .input, .select, .textarea,
  .field :is(input:not([type="checkbox"], [type="radio"], [type="range"], [type="color"]), select, textarea) {
    width: 100%;
    min-height: 2.75rem;
    padding: .55em .75em;
    background-color: var(--bg);
    color: var(--text);
    border: var(--hairline) solid var(--border-strong);
    border-radius: var(--radius-s);
    font-family: var(--font-ui);
    font-size: max(16px, var(--step-0)); /* 16px+ avoids iOS zoom */
    transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
    &::placeholder { color: var(--text-faint); opacity: 1; }
    &:hover { border-color: var(--text-muted); }
    &:focus-visible { outline: 2px solid var(--focus); outline-offset: 0; border-color: var(--focus); }
    &[aria-invalid="true"], &:user-invalid { border-color: var(--danger); }
  }
  .field textarea, .textarea { min-height: 8rem; resize: vertical; line-height: 1.5; }
  .field select, .select {
    appearance: none;
    padding-inline-end: 2.4em;
    background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%);
    background-position: calc(100% - 1.15em) 55%, calc(100% - .8em) 55%;
    background-size: .35em .35em;
    background-repeat: no-repeat;
  }
  .error-text {
    display: flex;
    gap: .35em;
    align-items: baseline;
    font-size: var(--step--1);
    font-weight: 600;
    color: var(--danger);
  }
  .field:has([aria-invalid="true"]) > label { color: var(--danger); }

  fieldset {
    border: var(--hairline) solid var(--border);
    border-radius: var(--radius-s);
    padding: var(--space-s) var(--space-m) var(--space-m);
    & legend { padding-inline: .4em; }
  }
  .choice {
    display: flex;
    gap: var(--space-2xs);
    align-items: flex-start;
    padding-block: var(--space-3xs);
    font-size: var(--step-0);
    cursor: pointer;
    & input { width: 1.2rem; height: 1.2rem; margin-top: .2em; accent-color: var(--accent); flex: none; }
  }
  .choice:has(input:disabled) { opacity: .6; cursor: not-allowed; }

  /* Honeypot for spam protection — hidden from people and assistive tech. */
  .hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }

  /* ---- Search bar ---- */
  .search-bar {
    display: flex;
    align-items: stretch;
    max-width: 44rem;
    border: var(--hairline) solid var(--border-strong);
    border-radius: var(--radius-s);
    background: var(--bg);
    transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
    &:focus-within { border-color: var(--focus); box-shadow: 0 0 0 1px var(--focus); }
    & label { display: flex; align-items: center; padding-inline: var(--space-xs) 0; color: var(--text-muted); }
    & input {
      flex: 1;
      min-width: 0;
      min-height: 3.25rem;
      padding: 0 var(--space-xs);
      border: 0;
      background: transparent;
      font-size: max(16px, var(--step-1));
      font-family: var(--font-ui);
      &:focus-visible { outline: none; }
      &::placeholder { color: var(--text-faint); }
    }
    & .btn { border-radius: 0 1px 1px 0; margin: -1px -1px -1px 0; }
  }
  .search-bar--on-dial {
    border-color: color-mix(in oklch, var(--on-dial) 35%, transparent);
    background: color-mix(in oklch, var(--dial-deep) 70%, transparent);
    color: var(--on-dial);
    & label { color: var(--on-dial-muted); }
    & input { color: var(--on-dial); &::placeholder { color: var(--on-dial-muted); } }
    &:focus-within { border-color: var(--metal-on-dial); box-shadow: 0 0 0 1px var(--metal-on-dial); }
    & .btn { --btn-bg: var(--metal-on-dial); --btn-border: var(--metal-on-dial); --btn-fg: var(--dial-deep);
      &:hover { --btn-bg: var(--on-dial); --btn-border: var(--on-dial); } }
  }

  /* ---- Badges ---- */
  .badge {
    --badge: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: .35em;
    padding: .2em .6em .15em;
    font-family: var(--font-ui);
    font-size: var(--step--2);
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    line-height: 1.3;
    white-space: nowrap;
    color: var(--badge);
    background: color-mix(in oklch, var(--badge) 10%, var(--bg));
    border: var(--hairline) solid color-mix(in oklch, var(--badge) 35%, transparent);
    border-radius: var(--radius-pill);
    &::before { content: ""; width: .45em; height: .45em; border-radius: 50%; background: currentColor; }
    &.badge--nodot::before { display: none; }
  }
  .badge--on_screen   { --badge: var(--ctx-screen); }
  .badge--red_carpet  { --badge: var(--ctx-carpet); }
  .badge--in_the_wild { --badge: var(--ctx-wild); }
  .badge--confirmed   { --badge: var(--success); }
  .badge--likely      { --badge: var(--warning); }
  .badge--unverified  { --badge: var(--text-muted); &::before { background: none; border: 1px solid currentColor; } }
  .badge--sample      { --badge: var(--text-muted); border-style: dashed; }
  .badge--hero        { --badge: var(--metal); &::before { border-radius: 0; rotate: 45deg; } }
  .badge--featured    { --badge: var(--accent); }
  .badge--authorised  { --badge: var(--success); }
  .badge--held        { --badge: var(--warning); }

  /* ---- Chips (filters) ---- */
  .chip {
    display: inline-flex;
    align-items: center;
    gap: .4em;
    min-height: 2.25rem;
    padding: .25em .85em;
    font-family: var(--font-ui);
    font-size: var(--step--1);
    color: var(--text);
    background: var(--surface);
    border: var(--hairline) solid var(--border);
    border-radius: var(--radius-pill);
    text-decoration: none;
    cursor: pointer;
    &:hover { border-color: var(--border-strong); color: var(--text); }
    &[aria-pressed="true"], &[aria-current="true"], &:has(input:checked) {
      background: var(--accent);
      border-color: var(--accent);
      color: var(--on-accent);
    }
    & input { position: absolute; opacity: 0; pointer-events: none; }
    &:has(input:focus-visible) { outline: 2px solid var(--focus); outline-offset: 2px; }
    & .count { color: inherit; opacity: .75; font-variant-numeric: tabular-nums; }
  }

  /* ---- Image frame: film-archive mount with a brass keyline ---- */
  .frame {
    position: relative;
    background: var(--dial-deep);
    padding: var(--frame-pad, .4rem);
    border-radius: var(--radius-s);
    box-shadow: inset 0 0 0 var(--hairline) color-mix(in oklch, var(--metal-on-dial) 45%, transparent);
    & img { width: 100%; aspect-ratio: var(--ratio, 16 / 9); object-fit: cover; background: var(--dial); }
    & figcaption, & .frame__caption {
      padding: var(--space-2xs) var(--space-3xs) var(--space-3xs);
      font-size: var(--step--2);
      color: var(--on-dial-muted);
      letter-spacing: .02em;
    }
  }
  .frame--portrait { --ratio: 4 / 5; }
  .frame--square { --ratio: 1; }
  .frame--none {
    display: grid;
    place-items: center;
    aspect-ratio: var(--ratio, 16 / 9);
    color: var(--on-dial-muted);
    font-size: var(--step--1);
    text-align: center;
    padding: var(--space-m);
  }

  /* ---- Cards ---- */
  .card {
    container-type: inline-size;
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: var(--hairline) solid var(--border);
    border-radius: var(--radius-m);
    overflow: hidden;
    transition: border-color var(--dur-fast), box-shadow var(--dur-med), translate var(--dur-med) var(--ease-out);
    &:has(a.card__link:hover) { border-color: var(--border-strong); box-shadow: var(--shadow-m); }
    @media (prefers-reduced-motion: no-preference) {
      &:has(a.card__link:hover) { translate: 0 -2px; }
    }
    &:has(a.card__link:focus-visible) { outline: 2px solid var(--focus); outline-offset: 2px; }
  }
  .card__media { --frame-pad: 0; border-radius: 0; }
  .card__body { display: grid; gap: var(--space-3xs); padding: var(--space-s); align-content: start; }
  .card__title {
    font-family: var(--font-display);
    font-size: var(--step-1);
    font-weight: var(--display-weight);
    line-height: 1.2;
    & a { color: var(--text); text-decoration: none; }
  }
  /* The whole card is clickable via its title link. */
  a.card__link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
  a.card__link:focus-visible { outline: none; }
  .card__meta { font-size: var(--step--1); color: var(--text-muted); }
  .card__foot {
    margin-top: auto;
    padding: var(--space-2xs) var(--space-s);
    border-top: var(--hairline) solid var(--border);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3xs);
    align-items: center;
  }
  /* Horizontal layout when the card is wide enough. A container query cannot restyle
     the container itself, so the row lives on an inner .card__layout wrapper. */
  .card__layout { display: flex; flex-direction: column; flex: 1; }
  @container (min-width: 34rem) {
    .card--row .card__layout { flex-direction: row; align-items: stretch; }
    .card--row .card__media { flex: 0 0 min(32%, 16rem); }
    .card--row .card__body { padding: var(--space-m); align-content: center; }
  }

  /* ---- Context entry tiles (On Screen / Red Carpet / In the Wild) ---- */
  .context-tile {
    --tile: var(--ctx-screen);
    position: relative;
    display: grid;
    align-content: end;
    min-height: 13rem;
    padding: var(--space-m);
    color: var(--on-dial);
    /* --tile-glow is a registered @property, so the glow's size can transition smoothly on hover. */
    background:
      radial-gradient(120% 90% at 100% 0%, color-mix(in oklch, var(--tile) 55%, transparent), transparent var(--tile-glow)),
      var(--dial);
    transition: --tile-glow var(--dur-slow) var(--ease-out);
    &:hover, &:focus-visible { --tile-glow: 85%; }
    border-radius: var(--radius-m);
    text-decoration: none;
    overflow: hidden;
    isolation: isolate;
    & h3 { font-size: var(--step-3); color: var(--on-dial); }
    & p { color: var(--on-dial-muted); font-size: var(--step--1); margin-top: var(--space-3xs); }
    & .eyebrow { color: var(--metal-on-dial); }
    &:hover { color: var(--on-dial); & h3 { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .15em; } }
    &:focus-visible { outline-offset: 3px; }
  }
  .context-tile--red_carpet  { --tile: oklch(55% .17 25); }
  .context-tile--in_the_wild { --tile: oklch(58% .1 135); }
  .context-tile--on_screen   { --tile: oklch(58% .1 250); }

  /* ---- Hero band: a sunburst dial ---- */
  .dial-band {
    position: relative;
    isolation: isolate;
    color: var(--on-dial);
    background: radial-gradient(75% 110% at 72% 50%, color-mix(in oklch, var(--dial) 70%, white 8%), var(--dial) 45%, var(--dial-deep) 100%);
    overflow: hidden;
    /* Sunburst rays on their own layer, centred on the dial's "pinion" at 72% / 50%.
       Rotating it with a transform is composited (no repaint), so it costs almost nothing. */
    &::before {
      content: "";
      position: absolute;
      z-index: -1;
      width: 260vmax;
      aspect-ratio: 1;
      left: calc(72% - 130vmax);
      top: calc(50% - 130vmax);
      background: repeating-conic-gradient(oklch(100% 0 0 / .035) 0deg .6deg, transparent .6deg 2.4deg);
      pointer-events: none;
    }
    & h1, & h2 { color: var(--on-dial); }
    & .lead { color: var(--on-dial-muted); }
    & .eyebrow { color: var(--metal-on-dial); }
    & a:not(.btn) { color: var(--on-dial); }
    & :focus-visible { outline-color: var(--metal-on-dial); }
  }
  @media (prefers-reduced-motion: no-preference) {
    .dial-band::before { animation: sunburst 240s linear infinite; will-change: transform; }
  }
  @keyframes sunburst { to { rotate: 360deg; } }

  /* ---- Tables ---- */
  .table-wrap { container-type: inline-size; }
  .data-table {
    width: 100%;
    font-size: var(--step--1);
    & caption { text-align: start; font-family: var(--font-display); font-size: var(--step-1); padding-bottom: var(--space-xs); }
    & th, & td { text-align: start; padding: var(--space-2xs) var(--space-xs); vertical-align: top; }
    & thead th {
      font-family: var(--font-ui);
      font-size: var(--step--2);
      font-weight: 600;
      letter-spacing: .12em;
      text-transform: uppercase;
      color: var(--text-muted);
      border-bottom: var(--hairline) solid var(--border-strong);
      white-space: nowrap;
    }
    & tbody tr { border-bottom: var(--hairline) solid var(--border); }
    & tbody tr:hover { background: var(--surface); }
    & td.num, & th.num { text-align: end; }
    & a { text-decoration-color: color-mix(in oklch, currentColor 30%, transparent); }
  }
  /* Sortable header buttons (added by table-sort.js). */
  .sort-btn {
    all: unset;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: .3em;
    &:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
    &::after { content: "↕"; opacity: .45; font-size: 1.1em; letter-spacing: 0; }
  }
  th[aria-sort="ascending"] .sort-btn::after { content: "↑"; opacity: 1; }
  th[aria-sort="descending"] .sort-btn::after { content: "↓"; opacity: 1; }

  /* Narrow containers: each row becomes a card, labels from data-label. */
  @container (max-width: 36rem) {
    .data-table--stack {
      & thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
      & tbody tr {
        display: block;
        padding: var(--space-xs) var(--space-s);
        margin-bottom: var(--space-xs);
        background: var(--surface);
        border: var(--hairline) solid var(--border);
        border-radius: var(--radius-m);
      }
      /* Each cell: label in a fixed left column, content (any mix of text and elements) on the right. */
      & td {
        display: block;
        position: relative;
        padding: .3em 0 .3em min(38%, 9rem);
        text-align: start;
      }
      & td::before {
        content: attr(data-label);
        position: absolute;
        inset-inline-start: 0;
        top: .45em;
        width: calc(min(38%, 9rem) - var(--space-xs));
        font-family: var(--font-ui);
        font-size: var(--step--2);
        font-weight: 600;
        letter-spacing: .1em;
        text-transform: uppercase;
        color: var(--text-muted);
      }
      & td.num { text-align: start; }
    }
  }

  /* ---- Specification list ---- */
  dl.specs {
    display: grid;
    grid-template-columns: minmax(8rem, max-content) 1fr;
    gap: 0;
    font-size: var(--step--1);
    & dt, & dd { padding: var(--space-2xs) 0; border-bottom: var(--hairline) solid var(--border); }
    & dt { color: var(--text-muted); padding-inline-end: var(--space-m); font-family: var(--font-ui); }
    & dd { color: var(--text); }
  }

  /* ---- Breadcrumbs ---- */
  .breadcrumbs ol {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3xs);
    font-family: var(--font-ui);
    font-size: var(--step--1);
    color: var(--text-muted);
  }
  .breadcrumbs li:not(:last-child)::after { content: "/"; margin-inline-start: var(--space-3xs); color: var(--metal); }
  .breadcrumbs a { color: var(--text-muted); text-decoration: none; &:hover { color: var(--accent); text-decoration: underline; } }
  .breadcrumbs [aria-current="page"] { color: var(--text); }

  /* ---- Pagination ---- */
  .pagination {
    & ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-3xs); align-items: center; }
    & a, & span {
      display: inline-grid;
      place-items: center;
      min-width: 2.75rem;
      min-height: 2.75rem;
      padding-inline: .6em;
      font-family: var(--font-ui);
      font-variant-numeric: tabular-nums lining-nums;
      text-decoration: none;
      border: var(--hairline) solid transparent;
      border-radius: var(--radius-s);
    }
    & a { color: var(--text); &:hover { border-color: var(--border-strong); } }
    & [aria-current="page"] { background: var(--accent); color: var(--on-accent); }
    & .gap { color: var(--text-muted); }
  }

  /* ---- A–Z index ---- */
  .az {
    & ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 2px; }
    & a, & span {
      display: inline-grid;
      place-items: center;
      width: 2.5rem;
      height: 2.5rem;
      font-family: var(--font-display);
      font-size: var(--step-1);
      text-decoration: none;
      border-radius: var(--radius-s);
    }
    & a { color: var(--text); &:hover { background: var(--surface-2); } }
    & a[aria-current="true"] { background: var(--accent); color: var(--on-accent); }
    & span { color: var(--text-faint); opacity: .55; }
  }

  /* ---- Notices ---- */
  .notice {
    --notice: var(--accent);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-xs);
    padding: var(--space-s) var(--space-m);
    background: color-mix(in oklch, var(--notice) 8%, var(--bg));
    border: var(--hairline) solid color-mix(in oklch, var(--notice) 35%, transparent);
    border-inline-start: 3px solid var(--notice);
    border-radius: var(--radius-s);
    & > .icon { color: var(--notice); margin-top: .2em; }
    & strong { color: var(--text); }
  }
  .notice--success { --notice: var(--success); }
  .notice--warning { --notice: var(--warning); }
  .notice--danger  { --notice: var(--danger); }

  /* ---- Empty state ---- */
  .empty {
    display: grid;
    justify-items: center;
    gap: var(--space-xs);
    padding: var(--space-xl) var(--space-m);
    text-align: center;
    color: var(--text-muted);
    background: var(--surface-sunk);
    border: var(--hairline) dashed var(--border-strong);
    border-radius: var(--radius-m);
    & h3 { color: var(--text); font-size: var(--step-2); }
  }

  /* ---- Stat ---- */
  .stat {
    display: grid;
    gap: 0;
    & .stat__value { font-family: var(--font-display); font-size: var(--step-4); line-height: 1; font-variant-numeric: lining-nums tabular-nums; }
    & .stat__label { font-family: var(--font-ui); font-size: var(--step--2); letter-spacing: .12em; text-transform: uppercase; color: var(--text-muted); }
  }

  /* ---- Dialogs & popovers ---- */
  dialog.dialog {
    margin: auto; /* the reset removes the UA margin that centres modal dialogs */
    width: min(36rem, 100% - 2 * var(--gutter));
    max-height: min(85dvh, 50rem);
    padding: 0;
    color: var(--text);
    background: var(--bg);
    border: var(--hairline) solid var(--border);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-m);
    opacity: 1;
    scale: 1;
    transition: opacity var(--dur-med) var(--ease-out), scale var(--dur-med) var(--ease-out), display var(--dur-med) allow-discrete, overlay var(--dur-med) allow-discrete;
    @starting-style { opacity: 0; scale: .97; }
    &:not([open]) { opacity: 0; scale: .97; }
    &::backdrop {
      background: var(--scrim);
      opacity: 1;
      transition: opacity var(--dur-med), display var(--dur-med) allow-discrete, overlay var(--dur-med) allow-discrete;
      @starting-style { opacity: 0; }
    }
    & .dialog__head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-s); padding: var(--space-s) var(--space-m); border-bottom: var(--hairline) solid var(--border); }
    & .dialog__head h2 { font-size: var(--step-2); }
    & .dialog__body { padding: var(--space-m); }
    & .dialog__foot { display: flex; justify-content: flex-end; gap: var(--space-2xs); padding: var(--space-s) var(--space-m); border-top: var(--hairline) solid var(--border); background: var(--surface); }
  }

  .popover {
    margin: 0;
    padding: var(--space-s);
    min-width: 15rem;
    color: var(--text);
    background: var(--bg);
    border: var(--hairline) solid var(--border);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-m);
    /* Fallback placement: top-right under the header. */
    inset: 4.25rem var(--gutter) auto auto;
    opacity: 1;
    translate: 0 0;
    transition: opacity var(--dur-fast), translate var(--dur-fast), display var(--dur-fast) allow-discrete, overlay var(--dur-fast) allow-discrete;
    @starting-style { opacity: 0; translate: 0 -4px; }
    &:not(:popover-open) { opacity: 0; translate: 0 -4px; }
  }
  /* Anchor positioning where supported: attach the popover to its button. */
  @supports (position-anchor: --a) {
    .popover[data-anchor] {
      inset: auto;
      position-area: block-end span-inline-start;
      margin-top: .4rem;
      position-try-fallbacks: flip-block, flip-inline;
    }
  }

  /* ---- Theme switcher ---- */
  .theme-menu h2 {
    font-family: var(--font-ui);
    font-size: var(--step--2);
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--space-2xs);
  }
  .theme-menu fieldset { border: 0; padding: 0; & + fieldset { margin-top: var(--space-s); } }
  .theme-menu legend { padding: 0; margin-bottom: var(--space-2xs); font-size: var(--step--2); letter-spacing: .14em; text-transform: uppercase; color: var(--text-muted); }
  .swatches { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-2xs); }
  .swatch {
    position: relative;
    display: grid;
    grid-template-columns: 1.6rem 1fr;
    align-items: center;
    gap: var(--space-2xs);
    padding: .4rem .5rem;
    border: var(--hairline) solid var(--border);
    border-radius: var(--radius-s);
    cursor: pointer;
    font-family: var(--font-ui);
    font-size: var(--step--1);
    & input { position: absolute; opacity: 0; pointer-events: none; }
    &:hover { border-color: var(--border-strong); }
    &:has(input:checked) { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); font-weight: 600; }
    &:has(input:focus-visible) { outline: 2px solid var(--focus); outline-offset: 2px; }
  }
  /* A miniature sunburst dial in a given palette (--sw-h hue, --sw-c chroma). */
  .swatch__dial {
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 50%;
    background:
      repeating-conic-gradient(oklch(100% 0 0 / .08) 0 4deg, transparent 4deg 12deg),
      radial-gradient(circle at 40% 35%, oklch(40% var(--sw-c) var(--sw-h)), oklch(20% var(--sw-c) var(--sw-h)));
    box-shadow: inset 0 0 0 2px oklch(78% .1 82 / .8);
  }
  .segmented {
    display: inline-flex;
    border: var(--hairline) solid var(--border-strong);
    border-radius: var(--radius-s);
    overflow: hidden;
    & label {
      position: relative;
      padding: .45em .9em;
      font-family: var(--font-ui);
      font-size: var(--step--1);
      cursor: pointer;
      & + label { border-inline-start: var(--hairline) solid var(--border-strong); }
      & input { position: absolute; opacity: 0; pointer-events: none; }
      &:has(input:checked) { background: var(--accent); color: var(--on-accent); }
      &:has(input:focus-visible) { outline: 2px solid var(--focus); outline-offset: -3px; }
    }
  }

  /* ---- Lightbox ---- */
  dialog.lightbox {
    width: 100vw;
    height: 100dvh;
    max-width: none;
    max-height: none;
    padding: 0;
    background: oklch(8% .01 var(--h) / .96);
    color: oklch(95% 0 0);
    border: 0;
    &::backdrop { background: transparent; }
    & figure { display: grid; grid-template-rows: 1fr auto; height: 100%; padding: var(--space-xl) var(--space-m) var(--space-m); gap: var(--space-s); }
    & img { width: 100%; height: 100%; object-fit: contain; min-height: 0; }
    & figcaption { text-align: center; font-size: var(--step--1); color: oklch(82% 0 0); }
    & .lightbox__close { position: absolute; top: var(--space-xs); right: var(--space-xs); --btn-fg: oklch(95% 0 0); }
    & .lightbox__nav { position: absolute; top: 50%; translate: 0 -50%; --btn-fg: oklch(95% 0 0); }
    & .lightbox__prev { left: var(--space-xs); }
    & .lightbox__next { right: var(--space-xs); }
    & :focus-visible { outline-color: oklch(85% .12 250); }
  }

  /* ---- Scroll-driven reveal (subtle; motion-safe only) ---- */
  @media (prefers-reduced-motion: no-preference) {
    @supports (animation-timeline: view()) {
      .reveal {
        animation: reveal linear both;
        animation-timeline: view();
        animation-range: entry 0% entry 40%;
      }
    }
  }
  @keyframes reveal { from { opacity: 0; translate: 0 1.25rem; } }
}

/* ======================================================================== */
@layer utilities {
  .visually-hidden {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
  }
  .flow > * + * { margin-top: var(--space-s); }
  .mt-0 { margin-top: 0 !important; }
  .mt-s { margin-top: var(--space-s); }
  .mt-m { margin-top: var(--space-m); }
  .mt-l { margin-top: var(--space-l); }
  .mt-xl { margin-top: var(--space-xl); }
  .text-center { text-align: center; }
  .nowrap { white-space: nowrap; }
}