/* ============================================================================
   The Catalog — hub stylesheet.
   Buildless: plain CSS, no preprocessor, no framework. Design tokens mirror the
   Next.js app so the hub and the variations feel like one product.
   ========================================================================= */

/* ------------------------------------------------------------------ self-hosted fonts
   The hub ships its own OFL faces (subset woff2, ~160 KB total) so it renders identically
   on file://, offline, and behind a corporate proxy — no CDN, no FOUT, no layout shift. */

@font-face {
  font-family: "Inter Variable";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("fonts/inter-latin-var.woff2") format("woff2-variations");
}

@font-face {
  font-family: "JetBrains Mono Variable";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("fonts/jetbrains-mono-latin-var.woff2") format("woff2-variations");
}

@font-face {
  font-family: "Instrument Serif";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/instrument-serif-400.woff2") format("woff2");
}

@font-face {
  font-family: "Instrument Serif";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/instrument-serif-400-italic.woff2") format("woff2");
}

@font-face {
  font-family: "Archivo Black";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/archivo-black-400.woff2") format("woff2");
}

:root {
  --ink-000: #050506;
  --ink-050: #09090c;
  --ink-100: #101014;
  --ink-200: #17171d;
  --ink-300: #23232b;
  --ink-400: #3a3a45;
  /* Muted labels sit on the darkest canvas in the catalogue: at #6a6a78 they measured 3.6:1, which
     is below AA for the small mono type they carry. */
  --ink-500: #8f8f9e;
  --ink-600: #9c9caa;
  --ink-700: #cdcdd6;
  --paper: #f5f2ea;

  --accent: #ff4fd8;
  --accent-2: #5b8cff;
  --accent-3: #00f0a8;
  --accent-4: #ff3b1f;
  --accent-5: #c6a15b;

  /* `Catalog *` families live in assets/fonts.css and carry both scripts (Latin + Persian) split
     by unicode-range — so one stack serves a bilingual page without a second stylesheet. */
  --font-sans: "Catalog Sans", "Inter Variable", Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono Variable", "Catalog Sans", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-serif: "Catalog Editorial", "Instrument Serif", "Times New Roman", Georgia, serif;

  --ease-editorial: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-snap: cubic-bezier(0.65, 0, 0.35, 1);
  --dur: 480ms;
  --gutter: clamp(1rem, 0.4rem + 2.6vw, 4rem);
  --radius: 3px;
  color-scheme: dark;
}

/**
 * `hidden` must win.
 *
 * The UA stylesheet ships `[hidden] { display: none }` at user-agent priority, so a single author
 * declaration — `.stage { display: grid }` for the hub overlay, `.body { display: grid }` for the
 * variation HUD — silently defeats it and the element JavaScript believes is hidden stays painted.
 * Found by real-browser screenshot verification; jsdom has no layout engine and cannot see it.
 */
[hidden] {
  display: none !important;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ink-000);
  color: var(--ink-700);
  font-family: var(--font-sans);
  font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.06rem);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.03em;
  margin: 0;
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
}

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

::selection {
  background: color-mix(in oklab, var(--accent) var(--fill-mix, 100%), var(--ink-700));
  color: var(--ink-000);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* The classic `left: -9999px` skip link is an LTR-only trick: in an RTL document a
   negative *left* is scrollable overflow, and the hub reported 9999px of horizontal
   scroll the moment the page switched direction. Clipping is direction-neutral. */
.skip {
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  z-index: 100;
  inline-size: 1px;
  block-size: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  /* An accent fill with page-coloured text measured 3.9:1 once the light ramp darkened the
     accent; ink-on-page is unmistakable in both themes and belongs to chrome anyway. */
  background: var(--ink-700);
  color: var(--ink-000);
  padding: 0.7rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
}
.skip:focus {
  inline-size: auto;
  block-size: auto;
  clip-path: none;
  margin: 0.5rem;
}

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

.masthead {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgb(var(--fg-rgb) / 0.08);
  min-height: min(96svh, 60rem);
  display: grid;
  grid-template-rows: auto 1fr;
  isolation: isolate;
}

.aurora {
  position: absolute;
  inset: -20% -10% auto;
  height: 130%;
  z-index: -1;
  filter: blur(60px) saturate(150%);
  opacity: 0.75;
}

.aurora__blob {
  position: absolute;
  width: 46vmax;
  height: 46vmax;
  border-radius: 50%;
  mix-blend-mode: screen;
  will-change: transform;
}
.aurora__blob--a {
  background: radial-gradient(circle at 30% 30%, #ff4fd8, transparent 62%);
  top: -6%;
  left: -4%;
  animation: drift 26s ease-in-out infinite;
}
.aurora__blob--b {
  background: radial-gradient(circle at 60% 40%, #5b8cff, transparent 62%);
  top: 6%;
  right: -8%;
  animation: drift 32s ease-in-out infinite reverse;
}
.aurora__blob--c {
  background: radial-gradient(circle at 50% 50%, #00f0a8, transparent 60%);
  bottom: -22%;
  left: 32%;
  animation: drift 40s ease-in-out infinite;
}

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  33% {
    transform: translate3d(6%, -4%, 0) scale(1.12);
  }
  66% {
    transform: translate3d(-5%, 5%, 0) scale(0.94);
  }
}

.aurora__grain {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
  opacity: 0.28;
}

.masthead::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgb(var(--bg-rgb) / 0.72) 0%, rgb(var(--bg-rgb) / 0.35) 45%, var(--ink-000) 100%);
}

.masthead__bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  /* If the bar ever runs out of room, it grows a second row rather than clipping a control off
     the inline end — a wrapped bar is a layout choice, a hidden button is a broken page. */
  flex-wrap: wrap;
  row-gap: 0.5rem;
  padding: 1rem var(--gutter);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-bottom: 1px solid rgb(var(--fg-rgb) / 0.06);
  backdrop-filter: blur(10px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: rgb(var(--fg-rgb));
}
.brand__dot {
  width: 8px;
  height: 8px;
  background: color-mix(in oklab, var(--accent) var(--fill-mix, 100%), var(--ink-700));
  box-shadow: 0 0 16px var(--accent);
  border-radius: 50%;
  animation: brandPulse 2.4s ease-in-out infinite;
}
@keyframes brandPulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.78);
  }
}

.masthead__meta {
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.5));
  margin-left: auto;
  display: inline-flex;
  gap: 0.45rem;
}
.counter {
  color: rgb(var(--fg-rgb));
}
.sep {
  opacity: 0.4;
}

.masthead__cta {
  color: rgb(var(--fg-rgb) / 0.72);
  border: 1px solid rgb(var(--fg-rgb) / 0.2);
  padding: 0.4rem 0.6rem;
  transition: color 200ms linear, border-color 200ms linear, background 200ms linear;
}
.masthead__cta:hover {
  color: var(--ink-000);
  background: color-mix(in oklab, var(--accent) var(--fill-mix, 100%), var(--ink-700));
  border-color: color-mix(in oklab, var(--accent) var(--accent-weight, 100%), var(--ink-700));
}

.masthead__body {
  display: grid;
  align-content: center;
  gap: clamp(1rem, 2.6vh, 1.8rem);
  padding: clamp(2.5rem, 8vh, 6rem) var(--gutter) clamp(3rem, 10vh, 7rem);
  max-width: 92rem;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / 0.6);
}

.masthead__title {
  font-family: var(--font-editorial);
  font-size: clamp(2.4rem, 8.4vw, 8rem);
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: rgb(var(--fg-rgb));
  display: grid;
}
.masthead__title .line {
  display: block;
  background: linear-gradient(100deg, rgb(var(--fg-rgb)) 10%, #cfd6ea 60%, #9aa6c4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.masthead__title .line--accent {
  background: linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 48%, var(--accent-3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: var(--font-serif);
  font-style: italic;
}

.masthead__lede {
  max-width: 62ch;
  font-size: clamp(1rem, 0.96rem + 0.3vw, 1.22rem);
  color: rgb(var(--fg-rgb) / 0.7);
}

.masthead__facts {
  list-style: none;
  margin: 0.6rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.2rem, 4vw, 3.4rem);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.45));
}
.masthead__facts b {
  display: block;
  font-family: var(--font-sans);
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  color: rgb(var(--fg-rgb));
  text-transform: none;
}

/* ------------------------------------------------------------------ controls */

.controls {
  position: sticky;
  top: 0;
  z-index: 40;
  display: grid;
  gap: 0.8rem;
  padding: 0.9rem var(--gutter);
  background: rgb(var(--bg-rgb) / 0.86);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid rgb(var(--fg-rgb) / 0.08);
}

.controls__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.controls__row--rail {
  gap: 1rem;
  align-items: flex-start;
}

.search {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1 1 22rem;
  border: 1px solid rgb(var(--fg-rgb) / 0.14);
  background: rgb(var(--fg-rgb) / 0.03);
  padding: 0.45rem 0.6rem;
  transition: border-color 200ms linear, background 200ms linear;
}
.search:focus-within {
  border-color: color-mix(in oklab, var(--accent) var(--accent-weight, 100%), var(--ink-700));
  background: rgba(255, 79, 216, 0.06);
}

.search__label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.4));
}

.search input {
  flex: 1;
  min-width: 0;
  background: none;
  border: 0;
  outline: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: rgb(var(--fg-rgb));
}
.search input::placeholder {
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.28));
}
.search input::-webkit-search-cancel-button {
  filter: invert(1);
  opacity: 0.5;
}

.search__key {
  font-size: 0.55rem;
  border: 1px solid rgb(var(--fg-rgb) / 0.18);
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.45));
  padding: 0.1rem 0.3rem;
}

.controls__group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0.42rem 0.6rem;
  border: 1px solid rgb(var(--fg-rgb) / 0.14);
  color: rgb(var(--fg-rgb) / 0.66);
  background: rgb(var(--fg-rgb) / 0.02);
  transition: color 160ms linear, border-color 160ms linear, background 160ms linear, transform 160ms linear;
}
.chip:hover {
  color: var(--ink-000);
  background: color-mix(in oklab, var(--accent) var(--fill-mix, 100%), var(--ink-700));
  border-color: color-mix(in oklab, var(--accent) var(--accent-weight, 100%), var(--ink-700));
  transform: translateY(-1px);
}
.chip[aria-pressed="true"],
.chip.is-active {
  /* A filled pill: the *page* colour as text on an ink fill, so it inverts with the theme
     instead of staying a white chip with black text on paper. */
  color: var(--ink-000);
  background: rgb(var(--fg-rgb));
  border-color: rgb(var(--fg-rgb));
}
.chip--danger:hover {
  background: color-mix(in oklab, var(--accent-4) var(--fill-mix, 100%), var(--ink-700));
  border-color: color-mix(in oklab, var(--accent-4) var(--accent-weight, 100%), var(--ink-700));
  color: rgb(var(--fg-rgb));
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / 0.6);
  cursor: pointer;
  border: 1px solid rgb(var(--fg-rgb) / 0.14);
  padding: 0.42rem 0.6rem;
}
.toggle input {
  accent-color: color-mix(in oklab, var(--accent-3) var(--accent-weight, 100%), var(--ink-700));
  width: 0.9rem;
  height: 0.9rem;
}

.rail {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}
.rail::before {
  content: attr(data-label);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.3));
  margin-right: 0.2rem;
}
.rail--tags {
  flex: 1;
}

.controls__status {
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.4));
}

/* ------------------------------------------------------------------ cards */

.catalog {
  padding: clamp(1.6rem, 4vh, 3rem) var(--gutter) clamp(3rem, 10vh, 7rem);
}

.cards {
  display: grid;
  gap: clamp(1.4rem, 3vw, 3rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 34rem), 1fr));
}

.cards[data-view="list"] {
  grid-template-columns: minmax(0, 1fr);
}

.card {
  --card-accent: var(--accent);
  position: relative;
  display: grid;
  gap: 0;
  border: 1px solid rgb(var(--fg-rgb) / 0.1);
  background: linear-gradient(180deg, rgb(var(--fg-rgb) / 0.035), rgb(var(--fg-rgb) / 0.012));
  transition: border-color var(--dur) var(--ease-editorial), transform var(--dur) var(--ease-editorial),
    opacity 320ms linear;
}

.card[hidden] {
  display: none;
}

.card:hover {
  border-color: color-mix(in oklab, var(--card-accent) 55%, transparent);
}

.card.is-entering {
  opacity: 0;
  transform: translateY(18px);
}

.card__hud {
  display: grid;
  gap: 0.55rem;
  padding: 0.9rem 1rem 1rem;
  border-bottom: 1px solid rgb(var(--fg-rgb) / 0.08);
  border-top: 2px solid var(--card-accent);
}

.card__head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.card__badge {
  /* A colour-mix whose variable is missing is invalid at computed-value time and the whole
     background silently disappears — which is exactly what happened to cards without a manifest
     accent (the planned ones). One fallback makes the mix total. */
  background: color-mix(in oklab, var(--card-accent, var(--accent)) var(--fill-mix, 100%), var(--ink-700));
  color: var(--ink-000);
  padding: 0.16rem 0.36rem;
  font-weight: 700;
}
.card__discipline {
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.5));
}
.card__status {
  margin-left: auto;
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.45));
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.card__status::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}
.card__status[data-status="stable"] {
  color: color-mix(in oklab, var(--accent-3) var(--accent-weight, 100%), var(--ink-700));
}

.card__id {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 0.78rem + 0.4vw, 1.05rem);
  letter-spacing: 0.01em;
  color: rgb(var(--fg-rgb));
  word-break: break-word;
}

.card__title {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: rgb(var(--fg-rgb) / 0.84);
}

.card__meta {
  display: grid;
  grid-template-columns: 5.6rem minmax(0, 1fr);
  gap: 0.5rem 0.7rem;
  font-size: 0.78rem;
}
.card__meta dt {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  /* 34% ink is a whisper on the night ramp and nothing at all on paper: the label is small text
     with a job to do, so it gets a theme-aware floor rather than a fixed low alpha. */
  color: rgb(var(--fg-rgb) / var(--label-alpha, 0.5));
  padding-top: 0.22rem;
}
.card__meta dd {
  margin: 0;
  color: rgb(var(--fg-rgb) / 0.72);
  line-height: 1.5;
}

.card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}
.card__chip {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.06em;
  padding: 0.16rem 0.38rem;
  border: 1px solid color-mix(in oklab, var(--card-accent) 34%, transparent);
  color: color-mix(in oklab, var(--card-accent, var(--accent)) var(--accent-weight, 100%), var(--ink-700));
  background: color-mix(in oklab, var(--card-accent) 9%, transparent);
  white-space: nowrap;
}

.card__vibe {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--card-accent, var(--accent)) var(--accent-weight, 100%), var(--ink-700));
}

.card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.2rem;
}
.card__action {
  font-family: var(--font-mono);
  font-size: 0.53rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.4rem 0.6rem;
  border: 1px solid rgb(var(--fg-rgb) / 0.16);
  color: rgb(var(--fg-rgb) / 0.72);
  transition: color 160ms linear, background 160ms linear, border-color 160ms linear;
}
.card__action:hover {
  color: var(--ink-000);
  background: color-mix(in oklab, var(--card-accent) var(--fill-mix, 100%), var(--ink-700));
  border-color: color-mix(in oklab, var(--card-accent) var(--accent-weight, 100%), var(--ink-700));
}
.card__action--primary {
  background: color-mix(in oklab, var(--card-accent) 18%, transparent);
  border-color: color-mix(in oklab, var(--card-accent) 45%, transparent);
  color: rgb(var(--fg-rgb));
}

/* --- preview frame ------------------------------------------------------- */

.card__frame {
  position: relative;
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(140% 120% at 20% 0%, color-mix(in oklab, var(--card-accent) 22%, transparent), transparent 60%),
    var(--ink-100);
  overflow: hidden;
  isolation: isolate;
}

.cards[data-view="list"] .card__frame {
  aspect-ratio: 21 / 9;
}

.card__frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: #050506;
  opacity: 0;
  transition: opacity 520ms var(--ease-editorial);
}
.card__frame iframe.is-live {
  opacity: 1;
}

.card__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 0.7rem;
  text-align: center;
  padding: 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.42));
  transition: opacity 420ms var(--ease-editorial);
}
.card__frame.is-live .card__placeholder {
  opacity: 0;
  pointer-events: none;
}

.card__placeholder b {
  color: rgb(var(--fg-rgb));
  font-weight: 500;
  letter-spacing: 0.06em;
}

.card__spinner {
  width: 42px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--card-accent), transparent);
  animation: sweep 1.5s var(--ease-snap) infinite;
  transform-origin: center;
}
@keyframes sweep {
  0% {
    transform: scaleX(0.06);
    opacity: 0.4;
  }
  50% {
    transform: scaleX(1);
    opacity: 1;
  }
  100% {
    transform: scaleX(0.06);
    opacity: 0.4;
  }
}

.card__notice {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  gap: 0.7rem;
  padding: 1.4rem;
  text-align: left;
  background: linear-gradient(160deg, rgba(255, 59, 31, 0.14), rgb(var(--bg-rgb) / 0.9));
  font-size: 0.8rem;
  color: rgb(var(--fg-rgb) / 0.82);
}
.card__notice strong {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--accent-4) var(--accent-weight, 100%), var(--ink-700));
}
.card__notice code {
  font-size: 0.72rem;
  color: rgb(var(--fg-rgb));
  background: rgb(var(--fg-rgb) / 0.07);
  padding: 0.1rem 0.3rem;
}
.card__notice p {
  line-height: 1.55;
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  padding: 0.75rem 1rem 0.95rem;
  border-top: 1px solid rgb(var(--fg-rgb) / 0.06);
}
.card__tag {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.38));
  border: 1px solid rgb(var(--fg-rgb) / 0.1);
  padding: 0.14rem 0.34rem;
}

.empty {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.4));
  padding: 3rem 0;
  text-align: center;
}

/* ------------------------------------------------------------------ how */

.how {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: clamp(1.5rem, 3vw, 3rem);
  padding: clamp(3rem, 10vh, 6rem) var(--gutter);
  border-top: 1px solid rgb(var(--fg-rgb) / 0.08);
  background: linear-gradient(180deg, var(--ink-000), var(--ink-050));
}

.how__col {
  display: grid;
  gap: 0.9rem;
  align-content: start;
}
.how__col h2 {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb));
}
.how__col p {
  font-size: 0.9rem;
  color: rgb(var(--fg-rgb) / 0.6);
  line-height: 1.6;
}
.how__col code {
  font-size: 0.82rem;
  color: color-mix(in oklab, var(--accent-3) var(--accent-weight, 100%), var(--ink-700));
}

.how pre {
  margin: 0;
  padding: 1rem;
  border: 1px solid rgb(var(--fg-rgb) / 0.09);
  background: rgb(var(--fg-rgb) / 0.025);
  overflow-x: auto;
  font-size: 0.76rem;
  line-height: 1.75;
  color: rgb(var(--fg-rgb) / 0.78);
}

/* ------------------------------------------------------------------ footer */

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  padding: 1.6rem var(--gutter) 2.4rem;
  border-top: 1px solid rgb(var(--fg-rgb) / 0.08);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgb(var(--fg-rgb) / var(--muted-alpha, 0.34));
}

/* ------------------------------------------------------------------ stage overlay */

.stage {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  align-items: center;
  justify-items: center;
  padding: clamp(0.5rem, 2vh, 2rem);
}

.stage__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 3, 5, 0.82);
  backdrop-filter: blur(6px);
  animation: fade 260ms var(--ease-editorial);
}

@keyframes fade {
  from {
    opacity: 0;
  }
}

.stage__panel {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  width: min(100%, 110rem);
  height: min(100%, 100svh);
  background: var(--ink-050);
  border: 1px solid rgb(var(--fg-rgb) / 0.14);
  box-shadow: 0 60px 140px -60px #000;
  animation: rise 420ms var(--ease-editorial);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.99);
  }
}

.stage__bar {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid rgb(var(--fg-rgb) / 0.1);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  flex-wrap: wrap;
}

.stage__id {
  color: color-mix(in oklab, var(--accent) var(--accent-weight, 100%), var(--ink-700));
}
.stage__title {
  color: rgb(var(--fg-rgb) / 0.6);
}
.stage__actions {
  margin-left: auto;
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.stage__viewport {
  position: relative;
  background: #050506;
  min-height: 0;
}
.stage__viewport iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.stage__foot {
  padding: 0.7rem 0.9rem;
  border-top: 1px solid rgb(var(--fg-rgb) / 0.1);
  font-size: 0.8rem;
  color: rgb(var(--fg-rgb) / 0.66);
  line-height: 1.55;
}

/* ------------------------------------------------------------------ responsive */

@media (max-width: 760px) {
  .masthead__facts {
    gap: 1.2rem;
  }
  .controls {
    position: static;
  }
  .controls__row--rail {
    flex-direction: column;
  }
  .card__meta {
    grid-template-columns: 4.6rem minmax(0, 1fr);
  }
  .stage__panel {
    height: 100svh;
    border: 0;
  }
  .stage {
    padding: 0;
  }
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .aurora__blob,
  .brand__dot,
  .card__spinner {
    animation: none;
  }
  .card,
  .card__frame iframe,
  .chip {
    transition: none;
  }
  .stage__panel,
  .stage__backdrop {
    animation: none;
  }
}

@media print {
  .controls,
  .stage,
  .card__frame {
    display: none;
  }
  body {
    background: #fff;
    color: #000;
  }
}

/* ---------------------------------------------------- a planned variation --

   A card whose page has not been written yet must still be worth looking at. It keeps
   everything that IS final — id, topic, stack, vibe, the reserved route — and replaces the
   preview frame with a blueprint panel that says so in one plain sentence. No spinner, no
   "preview mounts as you scroll", no dead Raw link: nothing that promises a page that does
   not exist. */

.card[data-live="0"] .card__frame {
  display: block;
  padding: 0;
  border-style: solid;
}

.card__planned {
  position: relative;
  display: grid;
  gap: 0.75rem;
  align-content: start;
  block-size: 100%;
  padding: 1.3rem 1.4rem;
  border-inline-start: 3px solid var(--accent, var(--ink-500));
  background:
    linear-gradient(color-mix(in oklab, var(--ink-200) 60%, transparent) 1px, transparent 1px) 0 0 / 100% 2.1rem,
    linear-gradient(90deg, color-mix(in oklab, var(--ink-200) 60%, transparent) 1px, transparent 1px) 0 0 / 2.1rem 100%,
    var(--ink-050);
}

.card__planned-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-500);
}

.card__planned-dot {
  inline-size: 0.45rem;
  block-size: 0.45rem;
  border-radius: 50%;
  background: var(--accent, var(--ink-500));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent, var(--ink-500)) 22%, transparent);
}

.card__planned-kicker {
  color: var(--ink-700);
}

.card__planned-batch {
  margin-inline-start: auto;
}

.card__planned-id {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.6vw, 1.25rem);
  letter-spacing: -0.01em;
  color: var(--ink-700);
  overflow-wrap: anywhere;
}

.card__planned-row {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0.6rem;
  align-items: baseline;
  padding-block: 0.35rem;
  border-block-start: 1px dashed color-mix(in oklab, var(--ink-400) 50%, transparent);
}

.card__planned-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-500);
}

.card__planned-value {
  font-size: 0.82rem;
  color: var(--ink-600);
}

.card__planned-route {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: color-mix(in oklab, var(--accent-2) var(--accent-weight, 100%), var(--ink-700));
  overflow-wrap: anywhere;
}

.card__planned-note {
  margin: 0;
  padding-block-start: 0.4rem;
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--ink-500);
}

/* The plate number: the one decorative element in the panel, and the reason the frame does not
   read as empty now that a preview is not filling it. */
.card__planned-ghost {
  position: absolute;
  inset-block-end: -0.16em;
  inset-inline-end: 0.1em;
  z-index: 0;
  font-family: var(--font-display);
  font-size: clamp(4rem, 9vw, 6.5rem);
  line-height: 0.8;
  letter-spacing: -0.04em;
  /* A watermark, and proud of it — but 16% of a saturated accent all but vanishes on paper, so
     the day ramp thickens it instead of letting the card lose its shape. */
  color: color-mix(in oklab, var(--accent, var(--ink-500)) var(--ghost-alpha, 16%), transparent);
  pointer-events: none;
  user-select: none;
}

.card__planned > *:not(.card__planned-ghost) {
  position: relative;
  z-index: 1;
}

@media (max-width: 560px) {
  .card__planned-row {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .card__planned-ghost {
    inset-block-end: -0.1em;
    font-size: 3.4rem;
  }
}

/* ============================================================================ 404 ------
   GitHub Pages hands every unresolved path to `docs/404.html`, which makes it the first page a
   mistyping visitor ever sees. So it is a real page, not an apology: the shell's own type ramp,
   the requested path printed back (an address bar is hard to read on a phone), and three routes
   back into the catalogue. Nothing here depends on the hub's JavaScript having run. */

.nf-body {
  min-block-size: 100svh;
  background: var(--bg, var(--ink-000));
}

.nf {
  display: grid;
  align-content: center;
  gap: 1.1rem;
  max-inline-size: 52rem;
  margin-inline: auto;
  padding: clamp(4rem, 12vh, 9rem) 1.4rem 4rem;
}

.nf__code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--accent, var(--accent-2));
}

.nf__title {
  margin: 0;
  font-family: var(--font-display, var(--font-mono));
  font-size: clamp(1.9rem, 1.1rem + 3.6vw, 3.3rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--ink-700);
}

/* An editorial aside: the same sentence, said by the other face. */
[lang="fa"] .nf__title,
[dir="rtl"] .nf__title {
  letter-spacing: 0;
  line-height: 1.5;
}

.nf__lede {
  margin: 0;
  max-inline-size: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-600);
}

.nf__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-block-start: 0.4rem;
}

.nf__primary,
.nf__secondary {
  display: inline-flex;
  align-items: center;
  padding: 0.66rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

/* Ink on the page, so the pill reads in either ramp without knowing which one is active. */
.nf__primary {
  background: var(--ink-700);
  color: var(--ink-000);
}

.nf__secondary {
  border-color: var(--ink-300);
  color: var(--ink-600);
}

.nf__primary:hover,
.nf__primary:focus-visible,
.nf__secondary:hover,
.nf__secondary:focus-visible {
  transform: translateY(-1px);
}

.nf__secondary:hover,
.nf__secondary:focus-visible {
  border-color: var(--ink-500);
  color: var(--ink-700);
}

.nf__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.9rem;
  margin: 1.6rem 0 0;
  padding-block-start: 1.1rem;
  border-block-start: 1px solid var(--ink-300);
}

.nf__facts div {
  display: grid;
  gap: 0.25rem;
  /* A long requested path must wrap inside the column rather than widen the grid. */
  min-inline-size: 0;
}

.nf__facts dt {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-500);
}

.nf__facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.7;
  color: var(--ink-600);
}

.nf__foot {
  margin: 2.2rem 0 0;
  max-inline-size: 60ch;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.9;
  color: var(--ink-500);
}