:root {
  color-scheme: light;
  --magenta: #c901a1;
  --orange: #f98810;
  --green: #8efa00;
  --lavender: #df78e0;
  --coral: #ff5e46;
  --red: #ff0000;
  --ink: #090812;
  --paper: #ffffff;
  --muted: #77747d;
  font-family: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  min-width: 320px;
}

body {
  background: var(--paper);
  color: var(--ink);
  overflow: hidden;
}

button {
  color: inherit;
  font: inherit;
}

button:focus-visible,
.cube-stage:focus-visible {
  outline: 2px solid var(--lavender);
  outline-offset: 3px;
}

.prototype-page {
  height: 100svh;
  isolation: isolate;
  min-height: 560px;
  overflow: hidden;
  position: relative;
}

/* Shared cube renderer --------------------------------------------------- */

.cube-stage {
  cursor: grab;
  height: 100%;
  left: 0;
  outline: none;
  perspective: clamp(720px, 86vw, 1220px);
  perspective-origin: 50% 46%;
  position: absolute;
  top: 0;
  touch-action: none;
  user-select: none;
  width: 100%;
  -webkit-user-select: none;
}

.cube-stage.is-grabbing,
.cube-stage.is-grabbing .cubie-face {
  cursor: grabbing;
}

.cube-object {
  --cubie-size: clamp(68px, 7.8vw, 112px);
  height: 0;
  left: 50%;
  position: absolute;
  top: var(--cube-y, 48%);
  transform-origin: 0 0 0;
  transform-style: preserve-3d;
  transition: opacity 140ms ease;
  width: 0;
  will-change: transform;
}

.cube-ruler {
  height: 1px;
  left: -10000px;
  pointer-events: none;
  position: absolute;
  visibility: hidden;
  width: var(--cubie-size);
}

.cubie {
  height: 0;
  left: 0;
  position: absolute;
  top: 0;
  transform-origin: 0 0 0;
  transform-style: preserve-3d;
  width: 0;
  will-change: transform;
}

.cubie-face {
  backface-visibility: hidden;
  background: #080710;
  border: 0;
  border-radius: calc(var(--cubie-size) * 0.075);
  box-shadow:
    0 0 0 calc(var(--cubie-size) * 0.012) #080710,
    inset 0 -4px 9px rgba(0, 0, 0, 0.42);
  cursor: grab;
  height: var(--cubie-size);
  left: 0;
  overflow: visible;
  position: absolute;
  top: 0;
  transform-origin: 0 0 0;
  transform-style: preserve-3d;
  width: var(--cubie-size);
  -webkit-backface-visibility: hidden;
}

.cubie-face:not(.has-sticker) {
  pointer-events: none;
}

.face--front {
  transform: translateZ(calc(var(--cubie-size) * 0.5)) translate(-50%, -50%);
}

.face--back {
  transform: rotateY(180deg) translateZ(calc(var(--cubie-size) * 0.5)) translate(-50%, -50%);
}

.face--right {
  transform: rotateY(90deg) translateZ(calc(var(--cubie-size) * 0.5)) translate(-50%, -50%);
}

.face--left {
  transform: rotateY(-90deg) translateZ(calc(var(--cubie-size) * 0.5)) translate(-50%, -50%);
}

.face--top {
  transform: rotateX(90deg) translateZ(calc(var(--cubie-size) * 0.5)) translate(-50%, -50%);
}

.face--bottom {
  transform: rotateX(-90deg) translateZ(calc(var(--cubie-size) * 0.5)) translate(-50%, -50%);
}

.sticker {
  background: var(--sticker);
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: calc(var(--cubie-size) * 0.095);
  box-shadow:
    inset 1px 2px 1px rgba(255, 255, 255, 0.3),
    inset -2px -4px 6px rgba(58, 0, 35, 0.12),
    0 2px 3px rgba(0, 0, 0, 0.28),
    0 0 0 1px rgba(0, 0, 0, 0.12);
  inset: 7.5%;
  pointer-events: none;
  position: absolute;
  transform: translateZ(calc(var(--cubie-size) * 0.018));
  transform-style: preserve-3d;
  will-change: transform;
}

.sticker-letter {
  align-items: center;
  color: var(--sticker-letter);
  display: grid;
  font-family: "Instrument Sans", sans-serif;
  font-size: calc(var(--cubie-size) * 0.42);
  font-stretch: 100%;
  font-weight: 500;
  inset: 0;
  justify-items: center;
  line-height: 1;
  position: absolute;
  text-align: center;
  text-rendering: geometricPrecision;
  transform: rotate(var(--sticker-letter-rotation, 0deg));
  -webkit-font-smoothing: antialiased;
}

.sticker-symbol {
  height: 62%;
  left: 50%;
  object-fit: contain;
  pointer-events: none;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%) rotate(var(--sticker-symbol-rotation, 0deg));
  user-select: none;
  width: 62%;
}

.is-active-layer .sticker {
  box-shadow:
    inset 1px 2px 1px rgba(255, 255, 255, 0.34),
    inset -2px -4px 6px rgba(58, 0, 35, 0.12),
    0 2px 4px rgba(0, 0, 0, 0.32),
    0 0 0 1px rgba(0, 0, 0, 0.22);
}

.cube-controls {
  display: flex;
  gap: 0.4rem;
  position: absolute;
  z-index: 8;
}

.cube-controls button {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(9, 8, 18, 0.16);
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.055em;
  padding: 0.65rem 0.86rem;
  text-transform: uppercase;
  transition: background 140ms ease, color 140ms ease, transform 140ms ease;
}

.cube-controls button:hover {
  background: var(--ink);
  color: white;
  transform: translateY(-1px);
}

.cube-state {
  display: grid;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.62rem;
  gap: 0.28rem;
  letter-spacing: 0.045em;
  line-height: 1.4;
  position: absolute;
  text-transform: uppercase;
  z-index: 8;
}

.cube-state strong {
  font-family: Inter, "Helvetica Neue", sans-serif;
  font-size: 0.83rem;
  letter-spacing: -0.01em;
  text-transform: none;
}

.state-label {
  color: var(--muted);
}

/* Variant A — direct translation of the supplied white artboards. */

.variant-a {
  --cube-y: 47%;
  background: #dd0077;
}

.white-room-stage {
  inset: 0;
  position: absolute;
}

.quiet-header {
  display: flex;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.61rem;
  justify-content: space-between;
  left: clamp(1.4rem, 3vw, 3rem);
  letter-spacing: 0.12em;
  position: absolute;
  right: clamp(1.4rem, 3vw, 3rem);
  text-transform: uppercase;
  top: clamp(1.4rem, 3vw, 2.5rem);
  z-index: 7;
}

.gesture-hint {
  align-items: center;
  bottom: 6.6rem;
  display: flex;
  font-size: 0.7rem;
  gap: 0.45rem;
  left: 50%;
  letter-spacing: 0.025em;
  margin: 0;
  position: absolute;
  transform: translateX(-50%);
  white-space: nowrap;
  z-index: 7;
}

.gesture-hint span {
  border: 1px solid rgba(9, 8, 18, 0.24);
  border-radius: 999px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.55rem;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.48rem;
  text-transform: uppercase;
}

.gesture-hint i {
  background: rgba(9, 8, 18, 0.22);
  height: 1px;
  margin: 0 0.25rem;
  width: 1.4rem;
}

.controls--quiet {
  bottom: 1.6rem;
  left: clamp(1.4rem, 3vw, 3rem);
}

.state--quiet {
  bottom: 1.65rem;
  right: clamp(1.4rem, 3vw, 3rem);
  text-align: right;
}

/* Variant B — the interaction explained as a compact field manual. */

.variant-b {
  background: white;
  display: grid;
  grid-template-columns: minmax(320px, 34vw) 1fr;
}

.manual-panel {
  background: #f2f0eb;
  border-right: 1px solid rgba(9, 8, 18, 0.11);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100svh;
  padding: clamp(2rem, 4vw, 4.2rem) clamp(1.8rem, 3.4vw, 4rem) 6.8rem;
  position: relative;
  z-index: 9;
}

.eyebrow {
  align-items: center;
  display: flex;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.62rem;
  gap: 0.65rem;
  letter-spacing: 0.11em;
  margin: 0 0 1.35rem;
  text-transform: uppercase;
}

.eyebrow::before {
  background: var(--magenta);
  content: "";
  height: 0.55rem;
  width: 0.55rem;
}

.manual-panel h1 {
  font-size: clamp(2.7rem, 5.2vw, 5.7rem);
  font-weight: 520;
  letter-spacing: -0.075em;
  line-height: 0.87;
  margin: 0;
}

.manual-deck {
  color: #55515b;
  font-size: clamp(0.82rem, 1.1vw, 1rem);
  line-height: 1.55;
  margin: 1.5rem 0 0;
  max-width: 27rem;
}

.gesture-list {
  border-top: 1px solid rgba(9, 8, 18, 0.16);
  display: grid;
  list-style: none;
  margin: clamp(1.5rem, 5vh, 4rem) 0 0;
  padding: 0;
}

.gesture-list li {
  border-bottom: 1px solid rgba(9, 8, 18, 0.12);
  display: grid;
  gap: 0.8rem;
  grid-template-columns: 2rem 1fr;
  padding: 0.85rem 0;
}

.gesture-list li > span {
  color: var(--magenta);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.65rem;
}

.gesture-list strong {
  font-size: 0.76rem;
  letter-spacing: 0.02em;
}

.gesture-list p {
  color: #6c6870;
  font-size: 0.68rem;
  line-height: 1.4;
  margin: 0.25rem 0 0;
}

.state--manual {
  bottom: 6.9rem;
  left: clamp(1.8rem, 3.4vw, 4rem);
}

.controls--manual {
  bottom: 2.35rem;
  left: clamp(1.8rem, 3.4vw, 4rem);
}

.controls--manual button {
  background: transparent;
}

.manual-stage {
  --cube-y: 49%;
  min-width: 0;
  position: relative;
}

.manual-stage .cube-object {
  --cubie-size: clamp(67px, 7.5vw, 116px);
}

.manual-caption {
  display: grid;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.6rem;
  gap: 0.3rem;
  left: 2.3rem;
  letter-spacing: 0.08em;
  position: absolute;
  text-transform: uppercase;
  top: 2.3rem;
  z-index: 8;
}

.manual-caption span {
  color: #8a858d;
}

.manual-caption strong {
  font-size: 0.68rem;
}

.palette-strip {
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  height: 0.72rem;
  left: 0;
  position: absolute;
  right: 0;
  z-index: 10;
}

.palette-strip i,
.poster-bars i {
  background: var(--swatch);
}

/* Variant C — the same object treated as a bold kinetic poster. */

.variant-c {
  --cube-y: 51%;
  background: #0a0910;
  color: white;
}

.variant-c::before {
  border: 1px solid rgba(255, 255, 255, 0.16);
  content: "";
  inset: 1.15rem;
  pointer-events: none;
  position: absolute;
  z-index: 8;
}

.poster-header {
  left: clamp(2rem, 5vw, 5.5rem);
  pointer-events: none;
  position: absolute;
  top: clamp(2rem, 5vw, 4.5rem);
  z-index: 7;
}

.poster-header p {
  color: rgba(255, 255, 255, 0.52);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  line-height: 1.6;
  margin: 0 0 1.6rem;
  text-transform: uppercase;
}

.poster-header h1 {
  font-size: clamp(4.4rem, 10.4vw, 10rem);
  font-weight: 620;
  letter-spacing: -0.09em;
  line-height: 0.66;
  margin: 0;
  text-transform: uppercase;
}

.poster-header em {
  color: var(--green);
  font-style: normal;
}

.poster-stage {
  height: 100%;
  margin-left: min(28vw, 360px);
  position: relative;
}

.poster-stage .cube-object {
  --cubie-size: clamp(76px, 9vw, 136px);
}

.variant-c .cube-stage {
  perspective: clamp(780px, 92vw, 1380px);
}

.poster-instruction {
  display: grid;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.59rem;
  gap: 0.48rem;
  letter-spacing: 0.08em;
  position: absolute;
  right: clamp(2.2rem, 4vw, 4.5rem);
  text-transform: uppercase;
  top: clamp(2.4rem, 5vw, 4.8rem);
  z-index: 9;
}

.controls--poster {
  bottom: 2.2rem;
  left: clamp(2rem, 5vw, 5.5rem);
}

.controls--poster button {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.28);
  color: white;
}

.controls--poster button:hover {
  background: white;
  color: var(--ink);
}

.state--poster {
  bottom: 2.45rem;
  right: clamp(2.2rem, 4vw, 4.5rem);
  text-align: right;
}

.state--poster .state-label,
.state--poster > span:last-child {
  color: rgba(255, 255, 255, 0.52);
}

.poster-bars {
  bottom: 1.15rem;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  height: 0.62rem;
  left: 1.15rem;
  position: absolute;
  right: 1.15rem;
  z-index: 9;
}

/* Prototype chrome ------------------------------------------------------ */

.prototype-switcher {
  align-items: center;
  backdrop-filter: blur(16px);
  background: rgba(9, 8, 18, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  bottom: calc(1rem + env(safe-area-inset-bottom));
  box-shadow: 0 12px 38px rgba(0, 0, 0, 0.24);
  color: white;
  display: grid;
  grid-template-columns: 2.75rem minmax(9.5rem, auto) 2.75rem;
  left: 50%;
  min-height: 3.15rem;
  overflow: hidden;
  position: fixed;
  transform: translateX(-50%);
  z-index: 30;
  -webkit-backdrop-filter: blur(16px);
}

.switcher-arrow {
  align-self: stretch;
  background: transparent;
  border: 0;
  color: white;
  cursor: pointer;
  font-size: 1rem;
  transition: background 140ms ease;
}

.switcher-arrow:hover {
  background: rgba(255, 255, 255, 0.12);
}

.switcher-copy {
  display: grid;
  gap: 0.12rem;
  justify-items: center;
  line-height: 1.15;
  padding: 0.42rem 0.9rem;
}

.switcher-kicker {
  color: rgba(255, 255, 255, 0.52);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.49rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.switcher-copy strong {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

@media (max-width: 820px) {
  .prototype-page {
    min-height: 500px;
  }

  .cube-object {
    --cubie-size: clamp(58px, 18.5vw, 77px);
  }

  .variant-a {
    --cube-y: 42%;
  }

  .quiet-header {
    font-size: 0.53rem;
  }

  .gesture-hint {
    bottom: calc(7.25rem + env(safe-area-inset-bottom));
    font-size: 0.62rem;
    gap: 0.34rem;
  }

  .gesture-hint i {
    margin: 0;
    width: 0.7rem;
  }

  .controls--quiet {
    bottom: calc(4.65rem + env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
  }

  .state--quiet {
    display: none;
  }

  .variant-b {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: minmax(190px, 34svh) 1fr;
  }

  .manual-panel {
    border-bottom: 1px solid rgba(9, 8, 18, 0.11);
    border-right: 0;
    display: block;
    min-height: 0;
    padding: 1.4rem 1.4rem 1rem;
  }

  .eyebrow {
    margin-bottom: 0.8rem;
  }

  .manual-panel h1 {
    font-size: clamp(2.3rem, 10vw, 3.2rem);
    line-height: 0.84;
  }

  .manual-deck {
    font-size: 0.7rem;
    line-height: 1.4;
    margin-top: 0.85rem;
    max-width: 33rem;
  }

  .gesture-list,
  .state--manual {
    display: none;
  }

  .controls--manual {
    bottom: auto;
    left: auto;
    right: 1.15rem;
    top: 1.2rem;
  }

  .controls--manual button {
    font-size: 0;
    height: 2rem;
    padding: 0;
    width: 2rem;
  }

  .controls--manual button::first-letter {
    font-size: 0.67rem;
  }

  .manual-stage {
    --cube-y: 45%;
  }

  .manual-stage .cube-object {
    --cubie-size: clamp(50px, 15.5vw, 68px);
  }

  .manual-caption {
    display: none;
  }

  .variant-c {
    --cube-y: 57%;
  }

  .variant-c::before {
    inset: 0.7rem;
  }

  .poster-header {
    left: 1.55rem;
    top: 1.55rem;
  }

  .poster-header p {
    font-size: 0.48rem;
    margin-bottom: 1rem;
  }

  .poster-header h1 {
    font-size: clamp(3.5rem, 19vw, 5.2rem);
  }

  .poster-stage {
    margin-left: 0;
  }

  .poster-stage .cube-object {
    --cubie-size: clamp(61px, 19vw, 80px);
  }

  .poster-instruction {
    display: none;
  }

  .controls--poster {
    bottom: calc(4.9rem + env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
  }

  .state--poster {
    display: none;
  }

  .poster-bars {
    bottom: 0.7rem;
    left: 0.7rem;
    right: 0.7rem;
  }

  .prototype-switcher {
    bottom: calc(0.8rem + env(safe-area-inset-bottom));
    grid-template-columns: 2.55rem minmax(8.7rem, auto) 2.55rem;
    min-height: 2.9rem;
  }
}

@media (max-width: 430px) {
  .quiet-header span:first-child {
    display: none;
  }

  .quiet-header {
    justify-content: flex-end;
  }

  .gesture-hint span {
    padding: 0.26rem 0.38rem;
  }

  .cube-controls button {
    font-size: 0.56rem;
    padding: 0.56rem 0.67rem;
  }

  .manual-deck {
    max-width: 26rem;
    padding-right: 6.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}