/* =============================================================
   zone-transitions.css — View Transitions Zone
   A Love Letter to the Web
   Zone 5 · Accent: #fbbf24
   ============================================================= */

/* ── Zone Tokens ────────────────────────────────────────────── */
:root {
  --vt-accent:        #fbbf24;
  --vt-accent-dim:    oklch(75% 0.14 82 / 0.15);
  --vt-accent-glow:   oklch(75% 0.14 82 / 0.35);
  --vt-font-display:  'Syne', system-ui, sans-serif;
  --vt-font-body:     'Newsreader', Georgia, serif;
  --vt-font-code:     'DM Mono', 'JetBrains Mono', monospace;
}

/* ── Global font overrides for this zone ────────────────────── */
.vt-hero h1,
.vt-story h2,
.vt-story h3,
.vt-story-block h3,
.vt-playground h2 {
  font-family: var(--vt-font-display);
}

.vt-story p,
.vt-detail__text {
  font-family: var(--vt-font-body);
  font-size: 1.05rem;
  line-height: 1.85;
}

code {
  font-family: var(--vt-font-code);
  font-size: 0.88em;
  background: oklch(14% 0.02 265);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  color: var(--vt-accent);
}

/* ════════════════════════════════════════════════════════════
   ACT 1: HERO
═══════════════════════════════════════════════════════════ */

.vt-hero {
  position: relative;
  overflow: hidden;
  padding-top: 6rem;
  align-items: flex-start;
}

/* Background decoration */
.vt-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.vt-hero__grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(oklch(100% 0 0 / 0.025) 1px, transparent 1px),
    linear-gradient(90deg, oklch(100% 0 0 / 0.025) 1px, transparent 1px);
  background-size: 4rem 4rem;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 100%);
}

.vt-hero__amber-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  translate: -50% 0;
  width: 60vw;
  height: 60vw;
  max-width: 700px;
  max-height: 700px;
  background: radial-gradient(
    circle,
    oklch(75% 0.14 82 / 0.12) 0%,
    oklch(75% 0.14 82 / 0.04) 50%,
    transparent 70%
  );
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

/* Hero content layout */
.vt-hero__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  padding-block: var(--space-2xl);
  width: 100%;
}

.vt-hero__header {
  position: relative;
  top: 7rem;
}

.vt-zone-label {
  display: inline-block;
  font-family: var(--vt-font-code);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vt-accent);
  background: oklch(75% 0.14 82 / 0.1);
  border: 1px solid oklch(75% 0.14 82 / 0.25);
  padding: 0.3em 0.75em;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-lg);
}

.vt-hero__title {
  font-family: var(--vt-font-display);
  font-size: clamp(3rem, 5vw + 1rem, 6rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.vt-hero__title em {
  font-style: normal;
  color: var(--vt-accent);
  -webkit-text-stroke: 0;
}

.vt-hero__subtitle {
  font-family: var(--vt-font-body);
  font-size: var(--text-md);
  color: var(--color-muted);
  margin-bottom: var(--space-md);
  font-weight: 300;
}

.vt-hero__hint {
  font-family: var(--vt-font-code);
  font-size: var(--text-xs);
  color: oklch(58% 0.03 265);
  letter-spacing: 0.04em;
}

/* ── Card Grid ─────────────────────────────────────────────── */
.vt-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  width: 100%;
}

.vt-card {
  min-width: 0;
  word-break: break-word;
}

@media (max-width: 700px) {
  .vt-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .vt-hero__header {
    top: 3rem;
  }
}

@media (max-width: 480px) {
  .vt-card-grid {
    grid-template-columns: 1fr;
  }

  .vt-hero__header {
    top: 1rem;
  }
}

/* ── Individual Card ───────────────────────────────────────── */
.vt-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  transition:
    border-color 200ms var(--ease-out),
    box-shadow 300ms var(--ease-out),
    transform 300ms var(--ease-out);
  contain: layout;
  /* Each card has a unique view-transition-name set inline */
}

.vt-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, oklch(75% 0.14 82 / 0.07) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 300ms var(--ease-out);
}

.vt-card:hover {
  border-color: oklch(75% 0.14 82 / 0.5);
  box-shadow: 0 0 0 1px oklch(75% 0.14 82 / 0.12), 0 20px 40px oklch(0% 0 0 / 0.4);
  transform: translateY(-3px);
}

.vt-card:hover::before {
  opacity: 1;
}

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

.vt-card__frame {
  padding: var(--space-xl) var(--space-lg) var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: oklch(10% 0.015 265);
  border-bottom: 1px solid var(--color-border);
}

.vt-card__icon {
  font-size: 2.5rem;
  line-height: 1;
  color: var(--vt-accent);
  filter: drop-shadow(0 0 16px oklch(75% 0.14 82 / 0.4));
  transition: transform 300ms var(--ease-out), filter 300ms var(--ease-out);
}

.vt-card:hover .vt-card__icon {
  transform: scale(1.15);
  filter: drop-shadow(0 0 24px oklch(75% 0.14 82 / 0.6));
}

.vt-card__meta {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.vt-card__label {
  font-family: var(--vt-font-code);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vt-accent);
  display: block;
  margin-bottom: var(--space-xs);
}

.vt-card__title {
  font-family: var(--vt-font-display);
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.2;
}

.vt-card__desc {
  font-family: var(--vt-font-body);
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: 1.6;
  margin: 0;
}

/* ────────────────────────────────────────────────────────────
   Card Detail Overlay
──────────────────────────────────────────────────────────── */

.vt-detail-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: oklch(4% 0.01 265 / 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--content-padding);
  overscroll-behavior: contain;
}

.vt-detail-overlay[hidden] {
  display: none;
}

.vt-detail {
  position: relative;
  background: var(--color-surface);
  border: 1px solid oklch(75% 0.14 82 / 0.3);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  max-width: 680px;
  width: 100%;
  max-height: 90dvh;
  overflow-y: auto;
  box-shadow:
    0 0 0 1px oklch(75% 0.14 82 / 0.1),
    0 40px 80px oklch(0% 0 0 / 0.6);
  contain: layout;
}

.vt-detail__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-border);
  border-radius: 50%;
  font-size: 0.75rem;
  color: var(--color-muted);
  transition:
    background 150ms var(--ease-out),
    color 150ms var(--ease-out);
}

.vt-detail__close:hover {
  background: oklch(75% 0.14 82 / 0.2);
  color: var(--vt-accent);
}

.vt-detail__icon {
  font-size: 4rem;
  line-height: 1;
  color: var(--vt-accent);
  filter: drop-shadow(0 0 20px oklch(75% 0.14 82 / 0.5));
  margin-bottom: var(--space-lg);
}

.vt-detail__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.vt-detail__num {
  font-family: var(--vt-font-code);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vt-accent);
}

.vt-detail__title {
  font-family: var(--vt-font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.vt-detail__text {
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}

.vt-detail__code {
  font-family: var(--vt-font-code);
  font-size: var(--text-xs);
  white-space: pre;
  overflow-x: auto;
  margin-top: var(--space-md);
}

/* ── View Transition: Card → Detail ────────────────────────── */

/* When a card expands, we use the expanded-card name for the detail panel */
::view-transition-old(vt-expanded-card) {
  animation: vt-card-collapse 380ms cubic-bezier(0.65, 0, 0.35, 1) both;
}

::view-transition-new(vt-expanded-card) {
  animation: vt-card-expand 380ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes vt-card-expand {
  from {
    opacity: 0;
    transform: scale(0.82);
    filter: blur(4px);
  }
  to {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
}

@keyframes vt-card-collapse {
  from {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
  to {
    opacity: 0;
    transform: scale(0.88);
    filter: blur(3px);
  }
}

/* Individual card transition animations */
::view-transition-old(vt-card-1),
::view-transition-old(vt-card-2),
::view-transition-old(vt-card-3),
::view-transition-old(vt-card-4),
::view-transition-old(vt-card-5),
::view-transition-old(vt-card-6) {
  animation: vt-card-shrink-out 300ms cubic-bezier(0.65, 0, 0.35, 1) both;
}

::view-transition-new(vt-card-1),
::view-transition-new(vt-card-2),
::view-transition-new(vt-card-3),
::view-transition-new(vt-card-4),
::view-transition-new(vt-card-5),
::view-transition-new(vt-card-6) {
  animation: vt-card-grow-in 300ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes vt-card-shrink-out {
  from { opacity: 1; transform: scale(1);    filter: blur(0);   }
  to   { opacity: 0; transform: scale(0.92); filter: blur(2px); }
}

@keyframes vt-card-grow-in {
  from { opacity: 0; transform: scale(1.04); filter: blur(2px); }
  to   { opacity: 1; transform: scale(1);    filter: blur(0);   }
}


/* ════════════════════════════════════════════════════════════
   ACT 2: STORY
═══════════════════════════════════════════════════════════ */

.vt-story {
  position: relative;
}

.vt-story h2 {
  font-family: var(--vt-font-display);
  color: var(--color-text);
  font-weight: 800;
  margin-bottom: var(--space-lg);
}

.vt-story h2 em {
  font-style: normal;
  color: var(--vt-accent);
}

.vt-story .code-block {
  font-family: var(--vt-font-code);
}

/* Story blocks */
.vt-story-block {
  margin-top: var(--space-2xl);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: oklch(9% 0.01 265);
}

.vt-story-block__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  background: oklch(10% 0.015 265);
  flex-wrap: wrap;
}

.vt-story-block__tag {
  font-family: var(--vt-font-code);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vt-accent);
  background: oklch(75% 0.14 82 / 0.1);
  border: 1px solid oklch(75% 0.14 82 / 0.25);
  padding: 0.2em 0.6em;
  border-radius: var(--radius-pill);
  flex-shrink: 0;
}

.vt-story-block__header h3 {
  font-family: var(--vt-font-code);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: -0.01em;
  flex: 1;
}

.vt-story-block__header .copy-btn {
  margin-left: auto;
}

.vt-story-block .code-block {
  border: none;
  border-radius: 0;
  background: oklch(6% 0.01 265);
  margin: 0;
}

/* Browser support row */
.vt-support-row {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.vt-support-note {
  font-family: var(--vt-font-body);
  font-size: var(--text-sm);
  color: var(--color-muted);
  max-width: 65ch;
  line-height: 1.75;
}


/* ════════════════════════════════════════════════════════════
   ACT 3: PLAYGROUND
═══════════════════════════════════════════════════════════ */

.vt-playground {
  border-top: 1px solid var(--color-border);
}

.vt-playground h2 {
  font-family: var(--vt-font-display);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.vt-playground h2 em {
  font-style: normal;
  color: var(--vt-accent);
}

/* Configurator layout */
.vt-configurator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  align-items: start;
}

@media (max-width: 840px) {
  .vt-configurator {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .vt-detail {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
  }

  .vt-detail__close {
    top: var(--space-md);
    right: var(--space-md);
  }
}

/* Stage */
.vt-configurator__stage {
  background: oklch(9% 0.01 265);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.vt-stage-scene {
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  position: relative;
}

/* State A */
.vt-stage-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl) var(--space-2xl);
  border-radius: var(--radius-lg);
  text-align: center;
  contain: layout;
  transition: none; /* transitions handled by View Transition API */
}

.vt-stage-state--a {
  background: oklch(75% 0.14 82 / 0.1);
  border: 1px solid oklch(75% 0.14 82 / 0.25);
}

.vt-stage-state--b {
  background: oklch(60% 0.18 265 / 0.1);
  border: 1px solid oklch(60% 0.18 265 / 0.25);
}

.vt-stage-state__symbol {
  font-size: 3rem;
  line-height: 1;
  color: var(--vt-accent);
}

.vt-stage-state--b .vt-stage-state__symbol {
  color: var(--color-primary);
}

.vt-stage-state__label {
  font-family: var(--vt-font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
}

.vt-stage-state__sub {
  font-family: var(--vt-font-code);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.vt-configurator__actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: oklch(10% 0.015 265);
  flex-wrap: wrap;
}

/* Toggle button */
.vt-toggle-btn {
  padding: 0.6em 1.5em;
  background: var(--vt-accent);
  color: oklch(10% 0 0);
  font-family: var(--vt-font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: none;
  transition:
    opacity 150ms var(--ease-out),
    transform 150ms var(--ease-out),
    box-shadow 200ms var(--ease-out);
}

.vt-toggle-btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px oklch(75% 0.14 82 / 0.35);
}

.vt-toggle-btn:active {
  transform: translateY(0);
  opacity: 1;
}

.vt-toggle-count {
  font-family: var(--vt-font-code);
  font-size: var(--text-xs);
  color: var(--color-muted);
}

/* Controls panel */
.vt-configurator__controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.vt-controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.vt-controls-grid .control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.vt-controls-grid .control-group:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

.vt-controls-grid label {
  font-family: var(--vt-font-code);
  font-size: var(--text-xs);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 0.3em;
}

.vt-controls-grid label output {
  color: var(--vt-accent);
  font-variant-numeric: tabular-nums;
}

.vt-controls-grid select {
  font-family: var(--vt-font-code);
  font-size: var(--text-xs);
  background: var(--color-base);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.4em 0.7em;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23666'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5em center;
  padding-right: 1.8em;
  transition: border-color 150ms var(--ease-out);
}

.vt-controls-grid select:hover {
  border-color: oklch(75% 0.14 82 / 0.5);
}

.vt-controls-grid select:focus-visible {
  outline: 2px solid var(--vt-accent);
  outline-offset: 2px;
}

.vt-controls-grid input[type="range"] {
  width: 100%;
  accent-color: var(--vt-accent);
  cursor: pointer;
}

/* Generated CSS display */
.vt-generated {
  background: oklch(6% 0.01 265);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.vt-generated__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  background: oklch(8% 0.01 265);
}

.vt-generated__label {
  font-family: var(--vt-font-code);
  font-size: var(--text-xs);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.vt-generated__code {
  border: none;
  border-radius: 0;
  background: transparent;
  font-size: var(--text-xs);
  min-height: 160px;
  margin: 0;
}

/* ── Playground View Transition: element animates ───────────── */
::view-transition-old(vt-playground-element) {
  animation: var(--vt-playground-out, vt-pg-fade-out) var(--vt-playground-duration, 400ms) var(--vt-playground-easing, ease-in-out) both;
}

::view-transition-new(vt-playground-element) {
  animation: var(--vt-playground-in, vt-pg-fade-in) var(--vt-playground-duration, 400ms) var(--vt-playground-easing, ease-in-out) both;
}

/* Crossfade (default) */
@keyframes vt-pg-fade-out {
  from { opacity: 1; }
  to   { opacity: 0; }
}
@keyframes vt-pg-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Slide right */
@keyframes vt-pg-slide-out-left {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(-3rem); }
}
@keyframes vt-pg-slide-in-right {
  from { opacity: 0; transform: translateX(3rem); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Slide left */
@keyframes vt-pg-slide-out-right {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(3rem); }
}
@keyframes vt-pg-slide-in-left {
  from { opacity: 0; transform: translateX(-3rem); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Slide up */
@keyframes vt-pg-slide-out-down {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(2rem); }
}
@keyframes vt-pg-slide-in-up {
  from { opacity: 0; transform: translateY(2rem); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Slide down */
@keyframes vt-pg-slide-out-up {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-2rem); }
}
@keyframes vt-pg-slide-in-down {
  from { opacity: 0; transform: translateY(-2rem); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Zoom */
@keyframes vt-pg-zoom-out {
  from { opacity: 1; transform: scale(1);    filter: blur(0);   }
  to   { opacity: 0; transform: scale(1.15); filter: blur(4px); }
}
@keyframes vt-pg-zoom-in {
  from { opacity: 0; transform: scale(0.85); filter: blur(4px); }
  to   { opacity: 1; transform: scale(1);    filter: blur(0);   }
}

/* Flip */
@keyframes vt-pg-flip-out {
  from { opacity: 1; transform: perspective(600px) rotateY(0deg); }
  to   { opacity: 0; transform: perspective(600px) rotateY(90deg); }
}
@keyframes vt-pg-flip-in {
  from { opacity: 0; transform: perspective(600px) rotateY(-90deg); }
  to   { opacity: 1; transform: perspective(600px) rotateY(0deg); }
}

/* Rotate */
@keyframes vt-pg-rotate-out {
  from { opacity: 1; transform: rotate(0deg)   scale(1);    }
  to   { opacity: 0; transform: rotate(-15deg) scale(0.85); }
}
@keyframes vt-pg-rotate-in {
  from { opacity: 0; transform: rotate(15deg)  scale(0.85); }
  to   { opacity: 1; transform: rotate(0deg)   scale(1);    }
}

/* ── Reduced Motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(vt-expanded-card),
  ::view-transition-new(vt-expanded-card),
  ::view-transition-old(vt-card-1),
  ::view-transition-new(vt-card-1),
  ::view-transition-old(vt-card-2),
  ::view-transition-new(vt-card-2),
  ::view-transition-old(vt-card-3),
  ::view-transition-new(vt-card-3),
  ::view-transition-old(vt-card-4),
  ::view-transition-new(vt-card-4),
  ::view-transition-old(vt-card-5),
  ::view-transition-new(vt-card-5),
  ::view-transition-old(vt-card-6),
  ::view-transition-new(vt-card-6),
  ::view-transition-old(vt-playground-element),
  ::view-transition-new(vt-playground-element) {
    animation: none !important;
  }

  .vt-hero__amber-glow {
    animation: none;
  }
}

/* ── Ambient Aurora (Layer 1 / Task 5) ─────────────────── */
.ambient-bg--aurora::before {
  content: ""; position: absolute; inset: -50%;
  background: conic-gradient(from 0deg, transparent, var(--zone-color, oklch(0.65 0.18 290)) 30%, transparent 60%);
  animation: ambient-aurora 60s linear infinite;
  opacity: 0.12;
}