:root {
  --bg: #101618;
  --ink: #f9eed8;
  --muted: #cdbf9f;
  --panel: rgba(42, 48, 45, 0.82);
  --panel-strong: rgba(37, 29, 23, 0.9);
  --line: rgba(255, 226, 168, 0.25);
  --gold: #f4c762;
  --gold-strong: #ffdc82;
  --cobalt: #1656a3;
  --amber: #ffcb05;
  --good: #80d38a;
  --repair: #f2a36d;
  --shadow: 0 22px 70px rgba(0, 0, 0, 0.42);
  --font-display: "Cinzel", Georgia, serif;
  --font-body: "Nunito", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  background:
    radial-gradient(circle at 18% 4%, rgba(244, 199, 98, 0.15), transparent 30%),
    radial-gradient(circle at 82% 10%, rgba(22, 86, 163, 0.18), transparent 34%),
    linear-gradient(135deg, #0f171a, #1f241e 52%, #211814);
  color: var(--ink);
  font-family: var(--font-body);
  margin: 0;
}

button {
  font: inherit;
}

#app {
  min-height: 100vh;
}

.screen {
  margin: 0 auto;
  max-width: 1220px;
  padding: 22px;
}

.app-topbar,
.room-topbar {
  align-items: center;
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin-bottom: 18px;
}

.room-topbar {
  background:
    linear-gradient(180deg, rgba(16, 22, 23, 0.96), rgba(16, 18, 17, 0.9)),
    rgba(16, 22, 23, 0.94);
  border: 1px solid rgba(255, 226, 168, 0.22);
  border-radius: 8px;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
  padding: 8px 12px;
  padding-top: 8px;
  position: sticky;
  top: 0;
  z-index: 20;
}

.room-topbar > div {
  display: grid;
  gap: 4px;
}

.brand-mark {
  align-items: center;
  display: flex;
  gap: 13px;
}

.brand-mark__sigil {
  align-items: center;
  background:
    linear-gradient(135deg, rgba(255, 220, 130, 0.24), rgba(22, 86, 163, 0.24)),
    rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
  display: grid;
  height: 48px;
  justify-items: center;
  width: 48px;
}

.brand-mark__sigil svg {
  display: block;
  height: 32px;
  width: 32px;
}

.brand-mark h1,
.room-topbar strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  letter-spacing: 0;
  line-height: 1;
  margin: 0;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.82);
}

.brand-mark p,
.room-topbar span,
.room-topbar p {
  color: #fff1cd;
  font-size: 0.88rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 0;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.86);
}

.btn {
  align-items: center;
  border: 1px solid rgba(255, 226, 168, 0.36);
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  font-size: 0.92rem;
  font-weight: 900;
  gap: 8px;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.btn:disabled {
  cursor: default;
  opacity: 0.55;
}

.btn:not(:disabled):hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: linear-gradient(180deg, #ffe28d, #d99933);
  color: #27180b;
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
}

.hero-panel {
  background:
    linear-gradient(135deg, rgba(255, 242, 207, 0.08), rgba(255, 255, 255, 0.02)),
    rgba(19, 24, 23, 0.78);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.8fr);
  overflow: hidden;
  padding: clamp(20px, 4vw, 42px);
}

.hero-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4.3rem);
  line-height: 0.98;
  margin: 0 0 12px;
}

.hero-copy p {
  color: #f6e9ca;
  font-size: clamp(1rem, 2vw, 1.24rem);
  font-weight: 800;
  line-height: 1.45;
  margin: 0 0 22px;
  max-width: 700px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.atlas-card {
  background:
    linear-gradient(180deg, rgba(255, 229, 166, 0.14), rgba(255, 255, 255, 0.04)),
    rgba(28, 28, 25, 0.86);
  border: 1px solid rgba(255, 226, 168, 0.26);
  border-radius: 8px;
  min-height: 300px;
  padding: 18px;
}

.atlas-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 12px;
}

.atlas-region {
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 226, 168, 0.18);
  border-radius: 8px;
  cursor: default;
  display: grid;
  gap: 12px;
  grid-template-columns: 58px 1fr auto;
  margin-top: 12px;
  padding: 14px;
  text-align: left;
  width: 100%;
}

.atlas-region:hover {
  border-color: rgba(255, 226, 168, 0.46);
}

.atlas-region__icon {
  align-items: center;
  background: rgba(22, 86, 163, 0.26);
  border: 1px solid rgba(255, 226, 168, 0.2);
  border-radius: 8px;
  display: grid;
  height: 58px;
  justify-items: center;
  width: 58px;
}

.atlas-region__icon svg {
  height: 38px;
  width: 38px;
}

.atlas-region strong {
  color: var(--ink);
  display: block;
  font-size: 1rem;
  font-weight: 900;
}

.atlas-region span {
  color: var(--muted);
  display: block;
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1.35;
  margin-top: 3px;
}

.atlas-region__status {
  color: var(--gold-strong);
  font-weight: 900;
}

.level-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.level-chip {
  background: rgba(255, 203, 5, 0.12);
  border: 1px solid rgba(255, 203, 5, 0.34);
  border-radius: 999px;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  gap: 5px;
  padding: 5px 8px;
}

.level-chip b,
.level-chip span {
  color: inherit;
  display: inline;
  font-size: 0.72rem;
  font-weight: 900;
  margin: 0;
}

.level-chip--current {
  background: rgba(22, 86, 163, 0.34);
  border-color: rgba(142, 190, 226, 0.72);
}

.level-chip--locked,
.level-chip--soon {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.16);
  color: rgba(255, 240, 204, 0.48);
  cursor: not-allowed;
}

.room-page {
  min-height: 100vh;
  padding: 16px;
}

.room-topbar {
  margin: 0 auto 12px;
  max-width: 1440px;
}

.room-progress {
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 226, 168, 0.14);
  border-radius: 999px;
  height: 10px;
  margin: 0 auto 12px;
  max-width: 1440px;
  overflow: hidden;
}

.room-progress span {
  background: linear-gradient(90deg, #f4c762, #7fd0ff);
  display: block;
  height: 100%;
  transition: width 240ms ease;
}

.mosaic-room {
  margin: 0 auto;
  max-width: 1440px;
}

.mosaic-room__scene {
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(180deg, rgba(20, 12, 8, 0.1), rgba(18, 10, 8, 0.28)),
    url("../img/room-mosaic-studio.svg") center / cover no-repeat;
  border: 1px solid rgba(255, 226, 168, 0.35);
  border-radius: 8px;
  box-shadow: var(--shadow);
  min-height: min(760px, calc(100vh - 150px));
  overflow: hidden;
  position: relative;
}

.mosaic-room__scene::after {
  background:
    radial-gradient(circle at 50% 52%, rgba(255, 220, 125, calc(0.06 + var(--solved) * 0.035)), transparent 32%),
    linear-gradient(180deg, transparent 50%, rgba(18, 10, 8, 0.34));
  content: "";
  inset: 0;
  pointer-events: none;
  position: absolute;
}

.mosaic-room__copy {
  left: 50%;
  max-width: min(900px, 88%);
  position: absolute;
  text-align: center;
  text-shadow:
    0 2px 2px rgba(0, 0, 0, 0.88),
    0 0 12px rgba(0, 0, 0, 0.88),
    0 8px 26px rgba(0, 0, 0, 0.72);
  top: 3.5%;
  transform: translateX(-50%);
  z-index: 5;
}

.mosaic-room__copy span,
.mosaic-room__wall-title span,
.mosaic-room__tray-title,
.mosaic-room__feedback span,
.reward-panel > span {
  color: #fff1cd;
  display: block;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mosaic-room__copy h2 {
  color: #fff7e4;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.8vw, 3.35rem);
  line-height: 0.98;
  margin: 4px 0 6px;
  text-shadow:
    0 2px 2px rgba(0, 0, 0, 0.9),
    0 0 18px rgba(0, 0, 0, 0.88),
    0 10px 32px rgba(0, 0, 0, 0.72);
}

.mosaic-room__copy p {
  color: #fff7df;
  font-size: clamp(0.94rem, 1.55vw, 1.18rem);
  font-weight: 900;
  line-height: 1.25;
  margin: 0;
  text-shadow:
    0 2px 2px rgba(0, 0, 0, 0.92),
    0 0 16px rgba(0, 0, 0, 0.88);
}

.mosaic-room__wall {
  background: linear-gradient(180deg, rgba(62, 39, 26, 0.92), rgba(27, 20, 18, 0.92));
  border: 3px solid rgba(205, 144, 68, 0.88);
  border-radius: 8px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 236, 185, 0.16);
  display: grid;
  gap: 12px;
  grid-template-rows: auto 1fr;
  left: 5.2%;
  padding: 12px;
  position: absolute;
  top: 24%;
  width: min(280px, 21%);
  z-index: 4;
}

.mosaic-room__wall-title strong {
  color: #fff3d2;
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
}

.mini-wall {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-panel {
  aspect-ratio: 1.18;
  background: rgba(12, 11, 12, 0.48);
  border: 1px solid rgba(255, 226, 168, 0.16);
  border-radius: 6px;
  display: grid;
  padding: 6px;
  position: relative;
}

.mini-panel.is-current {
  border-color: rgba(255, 220, 130, 0.74);
  box-shadow: 0 0 0 2px rgba(255, 220, 130, 0.12);
}

.mini-panel__num {
  align-items: center;
  background: #e9b85a;
  border-radius: 999px;
  color: #241408;
  display: grid;
  font-size: 0.66rem;
  font-weight: 900;
  height: 20px;
  justify-items: center;
  left: 50%;
  position: absolute;
  top: -10px;
  transform: translateX(-50%);
  width: 20px;
}

.mini-grid {
  display: grid;
  gap: 2px;
  grid-template-columns: repeat(var(--cols), 1fr);
  grid-template-rows: repeat(var(--rows), 1fr);
}

.mosaic-room__station {
  background: linear-gradient(180deg, rgba(85, 52, 28, 0.94), rgba(33, 22, 17, 0.96));
  border: 3px solid rgba(210, 147, 69, 0.88);
  border-radius: 8px;
  bottom: 8.5%;
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.36), inset 0 1px 0 rgba(255, 238, 191, 0.16);
  display: grid;
  gap: 14px;
  left: 50%;
  max-width: 720px;
  padding: 14px;
  position: absolute;
  transform: translateX(-50%);
  width: min(720px, 52%);
  z-index: 4;
}

.mosaic-board {
  aspect-ratio: 1.2;
  background: rgba(18, 16, 17, 0.68);
  border: 6px solid rgba(100, 62, 34, 0.95);
  border-radius: 8px;
  box-shadow: inset 0 0 0 1px rgba(255, 226, 168, 0.18);
  display: grid;
  gap: 5px;
  grid-template-columns: repeat(var(--cols), minmax(0, 1fr));
  grid-template-rows: repeat(var(--rows), minmax(0, 1fr));
  justify-self: center;
  max-height: min(330px, 36vh);
  padding: 8px;
  width: min(520px, 100%);
}

.tile-cell,
.candidate-tile {
  align-items: center;
  background: rgba(255, 244, 214, 0.18);
  border: 2px solid rgba(74, 45, 26, 0.68);
  border-radius: 5px;
  display: grid;
  justify-items: center;
  min-height: 0;
  overflow: hidden;
  position: relative;
}

.tile-cell.is-missing {
  background: rgba(255, 246, 218, 0.22);
  border-color: rgba(255, 220, 130, 0.86);
  box-shadow: inset 0 0 0 2px rgba(21, 24, 27, 0.22), 0 0 18px rgba(255, 220, 130, 0.14);
}

.tile-cell.is-trace::after {
  animation: traceSweep 1650ms ease-in-out both;
  animation-delay: calc(var(--trace-step, 0) * 95ms);
  border: 3px solid rgba(255, 220, 110, 0.9);
  border-radius: inherit;
  content: "";
  inset: 2px;
  pointer-events: none;
  position: absolute;
}

.tile-cell.is-choice::before {
  background: rgba(255, 249, 227, 0.94);
  border: 3px dashed rgba(35, 25, 16, 0.92);
  border-radius: 8px;
  color: #21160d;
  content: "?";
  display: grid;
  font-size: clamp(1.25rem, 3vw, 2.35rem);
  font-weight: 900;
  aspect-ratio: 1;
  justify-items: center;
  left: 50%;
  place-items: center;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(72%, 92px);
  z-index: 2;
}

.tile-cell.is-committed .tile-svg {
  animation: tileSeat 430ms cubic-bezier(0.2, 0.85, 0.2, 1) both;
}

@keyframes traceSweep {
  0% {
    box-shadow: 0 0 0 rgba(255, 220, 110, 0);
    opacity: 0;
    transform: scale(0.9);
  }
  28% {
    box-shadow: 0 0 22px rgba(255, 220, 110, 0.78);
    opacity: 1;
    transform: scale(1.04);
  }
  100% {
    box-shadow: 0 0 14px rgba(255, 220, 110, 0.38);
    opacity: 0.58;
    transform: scale(1);
  }
}

@keyframes tileSeat {
  0% {
    filter: brightness(1.18);
    opacity: 0.2;
    transform: translateY(48px) scale(1.18);
  }
  72% {
    filter: brightness(1.08);
    opacity: 1;
    transform: translateY(-4px) scale(1.03);
  }
  100% {
    filter: brightness(1);
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.tile-svg {
  display: block;
  height: 100%;
  filter: drop-shadow(0 2px 0 rgba(21, 24, 27, 0.48));
  width: 100%;
}

.tile-svg--small {
  height: 100%;
  width: 100%;
}

.candidate-row {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(5, minmax(88px, 1fr));
}

.candidate-tile {
  aspect-ratio: 1;
  background: linear-gradient(180deg, rgba(255, 248, 226, 0.92), rgba(214, 164, 91, 0.56));
  border: 3px solid rgba(57, 35, 20, 0.74);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.32), 0 10px 20px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  min-height: 94px;
  padding: 8px;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.candidate-tile:not(:disabled):hover,
.candidate-tile.is-selected {
  border-color: rgba(255, 220, 130, 0.82);
  box-shadow: 0 0 0 3px rgba(255, 220, 130, 0.13);
  transform: translateY(-2px);
}

.candidate-tile:disabled {
  cursor: default;
}

.flying-tile {
  animation: tileFlight 390ms cubic-bezier(0.22, 0.86, 0.24, 1) both;
  bottom: 19%;
  height: 86px;
  left: 50%;
  pointer-events: none;
  position: absolute;
  transform-origin: center;
  width: 86px;
  z-index: 7;
}

@keyframes tileFlight {
  0% {
    filter: brightness(1.15);
    opacity: 0.92;
    transform: translate(-50%, 0) scale(1);
  }
  58% {
    filter: brightness(1.25);
    opacity: 1;
    transform: translate(-50%, -190px) scale(1.08);
  }
  100% {
    filter: brightness(1);
    opacity: 0;
    transform: translate(-50%, -280px) scale(0.52);
  }
}

.mosaic-room__feedback {
  align-self: start;
  background: linear-gradient(180deg, rgba(44, 32, 24, 0.94), rgba(23, 18, 17, 0.94));
  border: 2px solid rgba(255, 226, 168, 0.24);
  border-radius: 8px;
  box-shadow: 0 18px 38px rgba(0, 0, 0, 0.3);
  display: grid;
  gap: 10px;
  padding: 14px;
  position: absolute;
  right: 4.8%;
  top: 24%;
  width: min(330px, 24%);
  z-index: 4;
}

.mosaic-room__feedback strong {
  color: #fff3d2;
  font-family: var(--font-display);
  font-size: 1.26rem;
  line-height: 1.05;
}

.mosaic-room__feedback p {
  color: #f8e8c4;
  font-size: 0.94rem;
  font-weight: 800;
  line-height: 1.35;
  margin: 0;
}

.feedback-compare {
  display: grid;
  gap: 8px;
  grid-template-columns: 1fr 1fr;
}

.feedback-compare__tile {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 226, 168, 0.2);
  border-radius: 6px;
  padding: 7px;
}

.feedback-compare__tile b {
  color: var(--muted);
  display: block;
  font-size: 0.68rem;
  margin-bottom: 5px;
  text-transform: uppercase;
}

.room-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.door-light {
  background: radial-gradient(circle, rgba(255, 228, 139, 0.8), transparent 62%);
  height: 32%;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  right: 8.5%;
  top: 30%;
  transition: opacity 500ms ease;
  width: 20%;
  z-index: 3;
}

.mosaic-room__scene.is-door .door-light,
.mosaic-room__scene.is-reward .door-light {
  opacity: 1;
}

.reward-panel {
  background: linear-gradient(180deg, rgba(38, 29, 22, 0.96), rgba(17, 15, 14, 0.98));
  border: 2px solid rgba(255, 226, 168, 0.34);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 14px;
  left: 50%;
  max-width: 620px;
  padding: 24px;
  position: absolute;
  text-align: center;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(620px, 90%);
  z-index: 8;
}

.reward-panel h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.7rem);
  line-height: 0.96;
  margin: 0;
}

.reward-panel p {
  color: #f6e6c4;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.4;
  margin: 0;
}

.reward-stars {
  color: rgba(255, 226, 168, 0.34);
  font-size: 2.3rem;
  letter-spacing: 4px;
}

.reward-stars .is-filled {
  color: var(--gold-strong);
  text-shadow: 0 0 16px rgba(255, 220, 130, 0.42);
}

.reward-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.reward-stats b {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 226, 168, 0.18);
  border-radius: 999px;
  color: #fff1cd;
  font-size: 0.78rem;
  padding: 7px 10px;
}

.sorting-room__scene {
  background:
    linear-gradient(180deg, rgba(16, 13, 20, 0.04), rgba(14, 18, 25, 0.28)),
    url("../img/room-sorting-atrium.svg") center / cover no-repeat;
}

.sorting-room__tray {
  background: linear-gradient(180deg, rgba(50, 55, 55, 0.92), rgba(26, 29, 29, 0.92));
  border: 3px solid rgba(190, 211, 207, 0.72);
  border-radius: 8px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  display: grid;
  gap: 12px;
  grid-template-rows: auto 1fr;
  left: 5.2%;
  padding: 12px;
  position: absolute;
  top: 24%;
  width: min(282px, 21%);
  z-index: 4;
}

.removed-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.removed-slot {
  aspect-ratio: 1.18;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 226, 168, 0.16);
  border-radius: 6px;
  display: grid;
  padding: 6px;
  position: relative;
}

.removed-slot.is-current {
  border-color: rgba(255, 220, 130, 0.74);
  box-shadow: 0 0 0 2px rgba(255, 220, 130, 0.12);
}

.tray-object {
  align-items: center;
  display: grid;
  justify-items: center;
  min-height: 0;
}

.sorting-room__station {
  background: linear-gradient(180deg, rgba(248, 234, 194, 0.2), rgba(32, 35, 36, 0.9));
  border: 3px solid rgba(222, 207, 162, 0.7);
  border-radius: 8px;
  bottom: 6.5%;
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.36), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  display: grid;
  gap: 12px;
  left: 50%;
  max-width: 680px;
  padding: 14px;
  position: absolute;
  transform: translateX(-50%);
  width: min(680px, 40%);
  z-index: 4;
}

.sorting-room__case-panel .mosaic-room__tray-title {
  color: rgba(255, 247, 219, 0.86);
}

.pedestal-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pedestal-choice {
  aspect-ratio: 1.05;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(42, 46, 46, 0.56));
  border: 2px solid rgba(255, 226, 168, 0.25);
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  min-height: 118px;
  overflow: hidden;
  padding: 6px;
  position: relative;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.pedestal-choice:not(:disabled):hover,
.pedestal-choice.is-selected {
  border-color: rgba(255, 220, 130, 0.82);
  box-shadow: 0 0 0 3px rgba(255, 220, 130, 0.13);
  transform: translateY(-2px);
}

.pedestal-choice:disabled {
  cursor: default;
}

.pedestal {
  display: grid;
  grid-template-rows: 1fr 22px;
  min-height: 0;
  position: relative;
}

.pedestal__case {
  align-items: center;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.42), rgba(255, 255, 255, 0.08)),
    rgba(207, 236, 247, 0.18);
  border: 2px solid rgba(225, 246, 255, 0.38);
  border-radius: 8px 8px 5px 5px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
  display: grid;
  justify-items: center;
  min-height: 0;
  overflow: hidden;
  position: relative;
}

.pedestal__case::before {
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.32), transparent);
  content: "";
  height: 140%;
  left: 15%;
  pointer-events: none;
  position: absolute;
  top: -20%;
  transform: rotate(12deg);
  width: 20%;
}

.pedestal__base {
  background: linear-gradient(180deg, #d7c08d, #8b7148);
  border: 2px solid #4b3926;
  border-radius: 4px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.24);
}

.pedestal.is-removed .pedestal__case {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.02)),
    rgba(20, 24, 25, 0.42);
  border-style: dashed;
}

.pedestal.is-removed .pedestal__case::after {
  background: rgba(255, 240, 200, 0.34);
  border-radius: 999px;
  content: "";
  height: 18px;
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 18px;
}

.pedestal.is-halo .pedestal__case {
  border-color: rgba(255, 220, 130, 0.9);
  box-shadow: 0 0 26px rgba(255, 220, 130, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.pedestal.is-share-pulse .object-svg {
  animation: sharedPulse 1550ms ease-in-out both;
}

.object-svg {
  display: block;
  height: min(112px, 100%);
  max-height: 100%;
  max-width: 100%;
  width: min(112px, 100%);
}

.object-svg--small {
  height: 100%;
  width: 100%;
}

.object-compare .object-svg {
  height: 86px;
  width: 86px;
}

.flying-object {
  animation: objectFlight 410ms cubic-bezier(0.22, 0.86, 0.24, 1) both;
  bottom: 22%;
  height: 104px;
  left: 50%;
  pointer-events: none;
  position: absolute;
  transform-origin: center;
  width: 104px;
  z-index: 7;
}

@keyframes objectFlight {
  0% {
    filter: brightness(1.15);
    opacity: 0.94;
    transform: translate(-50%, 0) scale(1);
  }
  58% {
    filter: brightness(1.22);
    opacity: 1;
    transform: translate(-50%, -175px) scale(1.08);
  }
  100% {
    filter: brightness(1);
    opacity: 0;
    transform: translate(-50%, -250px) scale(0.56);
  }
}

@keyframes sharedPulse {
  0% {
    filter: brightness(1);
    transform: scale(1);
  }
  34% {
    filter: brightness(1.24);
    transform: scale(1.07);
  }
  100% {
    filter: brightness(1);
    transform: scale(1);
  }
}

.quant-room__scene {
  background:
    linear-gradient(180deg, rgba(18, 13, 8, 0.02), rgba(17, 14, 10, 0.26)),
    url("../img/room-counting-plains.svg") center / cover no-repeat;
}

.quant-room__tray {
  background: linear-gradient(180deg, rgba(79, 91, 61, 0.92), rgba(35, 43, 31, 0.94));
  border: 3px solid rgba(229, 190, 102, 0.78);
  border-radius: 8px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 239, 194, 0.18);
  display: grid;
  gap: 12px;
  grid-template-rows: auto 1fr;
  left: 5.2%;
  padding: 12px;
  position: absolute;
  top: 24%;
  width: min(282px, 21%);
  z-index: 4;
}

.quant-slots {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.quant-slot {
  align-items: center;
  aspect-ratio: 1.18;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 226, 168, 0.16);
  border-radius: 6px;
  display: grid;
  justify-items: center;
  min-height: 0;
  padding: 6px;
  position: relative;
}

.quant-slot.is-current {
  border-color: rgba(255, 220, 130, 0.78);
  box-shadow: 0 0 0 2px rgba(255, 220, 130, 0.12);
}

.quant-slot.is-lit {
  background: radial-gradient(circle at 50% 25%, rgba(255, 220, 130, 0.34), rgba(255, 255, 255, 0.08));
}

.quant-room__station {
  background: linear-gradient(180deg, rgba(139, 99, 55, 0.96), rgba(68, 47, 28, 0.96));
  border: 3px solid rgba(226, 177, 92, 0.88);
  border-radius: 8px;
  bottom: 15%;
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.36), inset 0 1px 0 rgba(255, 238, 191, 0.16);
  display: grid;
  gap: 14px;
  left: 50%;
  max-width: 760px;
  padding: 14px;
  position: absolute;
  transform: translateX(-50%);
  width: min(760px, 50%);
  z-index: 4;
}

.quant-board {
  background: linear-gradient(180deg, rgba(255, 239, 190, 0.78), rgba(190, 130, 72, 0.46));
  border: 3px solid rgba(61, 38, 22, 0.72);
  border-radius: 8px;
  min-height: 215px;
  overflow: hidden;
  padding: 10px;
}

.quant-board.is-committing {
  animation: manipulatorCommit 390ms ease both;
}

@keyframes manipulatorCommit {
  0% {
    filter: brightness(1);
    transform: scale(1);
  }
  48% {
    filter: brightness(1.14);
    transform: scale(1.01);
  }
  100% {
    filter: brightness(1);
    transform: scale(1);
  }
}

.coin-svg {
  display: block;
  height: 100%;
  width: 100%;
}

.coin-svg--small {
  height: 32px;
  width: 32px;
}

.coin-stack {
  align-content: end;
  display: grid;
  gap: 3px;
  grid-template-columns: repeat(4, 1fr);
  justify-items: center;
  min-height: 72px;
  min-width: 104px;
}

.coin-stack--small {
  gap: 2px;
  grid-template-columns: repeat(3, 1fr);
  min-height: 58px;
  min-width: 82px;
}

.coin-stack__token {
  display: block;
  height: 32px;
  width: 32px;
}

.coin-stack__empty {
  align-self: center;
  border: 2px dashed rgba(255, 241, 205, 0.36);
  border-radius: 999px;
  height: 42px;
  justify-self: center;
  width: 42px;
}

.abacus-board {
  display: grid;
  gap: 10px;
  padding: 4px;
}

.abacus-rail {
  align-items: center;
  background: rgba(255, 249, 223, 0.68);
  border: 2px solid rgba(70, 43, 24, 0.58);
  border-radius: 8px;
  display: grid;
  min-height: 54px;
  padding: 8px 12px;
  position: relative;
}

.abacus-rail.is-missing {
  border-color: rgba(31, 23, 15, 0.86);
  border-style: dashed;
  box-shadow: inset 0 0 0 2px rgba(255, 220, 130, 0.26), 0 0 20px rgba(255, 220, 130, 0.22);
}

.abacus-rail.is-revealed {
  animation: rulePulse 1550ms ease-in-out both;
  animation-delay: calc(var(--rail-step, 0) * 130ms);
}

.abacus-rail__track {
  background: #7a5130;
  border: 2px solid rgba(21, 24, 27, 0.58);
  border-radius: 999px;
  height: 11px;
  left: 18px;
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
}

.abacus-rail__beads {
  display: flex;
  gap: 6px;
  min-height: 38px;
  position: relative;
  z-index: 2;
}

.abacus-bead {
  height: 34px;
  width: 34px;
}

.abacus-answer-marker {
  align-items: center;
  background: rgba(255, 252, 233, 0.92);
  border: 3px dashed rgba(35, 25, 16, 0.86);
  border-radius: 999px;
  color: #25170d;
  display: grid;
  font-size: 0.72rem;
  font-weight: 900;
  inset: 8px 18px;
  justify-items: center;
  letter-spacing: 0.08em;
  position: absolute;
  text-transform: uppercase;
  z-index: 1;
}

@keyframes rulePulse {
  0% {
    box-shadow: 0 0 0 rgba(255, 220, 110, 0);
    transform: scale(1);
  }
  36% {
    box-shadow: 0 0 24px rgba(255, 220, 110, 0.55);
    transform: scale(1.025);
  }
  100% {
    box-shadow: 0 0 10px rgba(255, 220, 110, 0.22);
    transform: scale(1);
  }
}

.counter-controls {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.counter-button,
.counter-readout {
  align-items: center;
  border-radius: 8px;
  display: grid;
  font-size: 1.35rem;
  font-weight: 900;
  height: 50px;
  justify-items: center;
  width: 58px;
}

.counter-button {
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 226, 168, 0.32);
  color: #fff3d2;
  cursor: pointer;
}

.counter-button:not(:disabled):hover {
  border-color: rgba(255, 220, 130, 0.82);
  transform: translateY(-1px);
}

.counter-button:disabled {
  cursor: default;
  opacity: 0.45;
}

.counter-readout {
  background: rgba(18, 16, 14, 0.55);
  border: 2px solid rgba(255, 226, 168, 0.22);
  color: #ffe29a;
}

.transfer-board {
  display: grid;
  gap: 14px;
}

.transfer-board.is-revealed .transfer-tray {
  animation: rulePulse 1500ms ease-in-out both;
  animation-delay: calc(var(--rail-step, 0) * 120ms);
}

.transfer-pair {
  align-items: center;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(90px, 1fr) 42px minmax(90px, 1fr);
}

.transfer-tray {
  align-items: center;
  background: rgba(255, 249, 223, 0.64);
  border: 2px solid rgba(70, 43, 24, 0.56);
  border-radius: 8px;
  display: grid;
  justify-items: center;
  min-height: 108px;
  padding: 8px;
}

.transfer-tray.is-active {
  border-color: rgba(255, 220, 130, 0.72);
}

.transfer-tray span {
  color: rgba(255, 240, 204, 0.72);
  font-size: 0.68rem;
  font-weight: 900;
  text-transform: uppercase;
}

.transfer-arrow {
  background: rgba(255, 226, 168, 0.55);
  border-radius: 999px;
  height: 5px;
  position: relative;
}

.transfer-arrow::after {
  border-bottom: 9px solid transparent;
  border-left: 12px solid rgba(255, 226, 168, 0.72);
  border-top: 9px solid transparent;
  content: "";
  position: absolute;
  right: -3px;
  top: 50%;
  transform: translateY(-50%);
}

.balance-board {
  display: grid;
  min-height: 270px;
  place-items: center;
}

.balance-frame {
  background: linear-gradient(180deg, rgba(255, 249, 223, 0.56), rgba(165, 108, 58, 0.28));
  border: 2px solid rgba(57, 35, 20, 0.68);
  border-radius: 12px;
  height: 245px;
  max-width: 520px;
  position: relative;
  width: 100%;
}

.balance-beam {
  height: 120px;
  left: 50%;
  position: absolute;
  top: 20px;
  transform: translateX(-50%) rotate(var(--tilt, 0deg));
  transform-origin: 50% 68px;
  transition: transform 220ms ease;
  width: 82%;
}

.balance-beam::before {
  background: linear-gradient(180deg, #e8b458, #8f5d2f);
  border: 3px solid #15181b;
  border-radius: 999px;
  content: "";
  height: 13px;
  left: 0;
  position: absolute;
  right: 0;
  top: 62px;
}

.balance-pan {
  align-items: end;
  background: linear-gradient(180deg, rgba(255, 233, 172, 0.7), rgba(156, 94, 47, 0.56));
  border: 3px solid rgba(21, 24, 27, 0.86);
  border-radius: 10px 10px 24px 24px;
  bottom: -8px;
  display: grid;
  justify-items: center;
  min-height: 104px;
  padding: 8px;
  position: absolute;
  width: 145px;
}

.balance-pan::before {
  background: #15181b;
  border-radius: 999px;
  content: "";
  height: 4px;
  left: 12px;
  position: absolute;
  right: 12px;
  top: 10px;
}

.balance-board.is-revealed .balance-pan {
  animation: rulePulse 1450ms ease-in-out both;
  animation-delay: calc(var(--rail-step, 0) * 180ms);
}

.balance-pan--left {
  left: 0;
}

.balance-pan--right {
  right: 0;
}

.balance-pan__split {
  align-items: end;
  display: flex;
  gap: 8px;
  justify-content: center;
}

.balance-post {
  background: linear-gradient(180deg, #e1ad57, #6e4525);
  border: 3px solid #15181b;
  border-radius: 999px 999px 0 0;
  height: 130px;
  left: 50%;
  position: absolute;
  top: 78px;
  transform: translateX(-50%);
  width: 18px;
}

.balance-base {
  background: linear-gradient(180deg, #bc7b3d, #684126);
  border: 3px solid #15181b;
  border-radius: 10px 10px 6px 6px;
  bottom: 0;
  height: 22px;
  left: 50%;
  position: absolute;
  transform: translateX(-50%);
  width: 150px;
}

.token-groove {
  align-items: center;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  min-height: 170px;
}

.token-groove__slot {
  align-items: center;
  aspect-ratio: 1;
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 226, 168, 0.2);
  border-radius: 8px;
  display: grid;
  justify-items: center;
  min-height: 86px;
  padding: 7px;
}

.token-groove__slot.is-missing {
  border-color: rgba(255, 220, 130, 0.72);
  border-style: dashed;
}

.token-groove__slot.is-revealed {
  animation: rulePulse 1450ms ease-in-out both;
  animation-delay: calc(var(--rail-step, 0) * 115ms);
}

.token-choice-row {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.token-choice {
  aspect-ratio: 1;
  background: linear-gradient(180deg, rgba(255, 244, 214, 0.18), rgba(62, 40, 24, 0.58));
  border: 2px solid rgba(255, 226, 168, 0.28);
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  justify-items: center;
  min-height: 80px;
  padding: 7px;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.token-choice:not(:disabled):hover,
.token-choice.is-selected {
  border-color: rgba(255, 220, 130, 0.82);
  box-shadow: 0 0 0 3px rgba(255, 220, 130, 0.13);
  transform: translateY(-2px);
}

.token-choice:disabled {
  cursor: default;
}

.quant-token-panel .mosaic-room__tray-title {
  color: rgba(255, 247, 219, 0.86);
}

.quant-compare .coin-stack {
  margin: 0 auto;
}

.spatial-room__scene {
  background:
    linear-gradient(180deg, rgba(13, 18, 23, 0.02), rgba(12, 15, 19, 0.3)),
    url("../img/room-mirror-hall.svg") center / cover no-repeat;
}

.spatial-room__rail {
  background: linear-gradient(180deg, rgba(51, 62, 68, 0.92), rgba(24, 29, 34, 0.94));
  border: 3px solid rgba(151, 213, 223, 0.72);
  border-radius: 8px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  display: grid;
  gap: 12px;
  grid-template-rows: auto 1fr;
  left: 5.2%;
  padding: 12px;
  position: absolute;
  top: 24%;
  width: min(282px, 21%);
  z-index: 4;
}

.spatial-slots {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.spatial-slot {
  align-items: center;
  aspect-ratio: 1.18;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(151, 213, 223, 0.22);
  border-radius: 6px;
  display: grid;
  justify-items: center;
  min-height: 0;
  padding: 6px;
  position: relative;
}

.spatial-slot.is-current {
  border-color: rgba(151, 213, 223, 0.86);
  box-shadow: 0 0 0 2px rgba(151, 213, 223, 0.13);
}

.spatial-slot.is-lit {
  background: radial-gradient(circle at 50% 25%, rgba(151, 213, 223, 0.34), rgba(255, 255, 255, 0.08));
}

.spatial-room__station {
  background: linear-gradient(180deg, rgba(65, 72, 75, 0.94), rgba(24, 25, 28, 0.97));
  border: 3px solid rgba(151, 213, 223, 0.78);
  border-radius: 8px;
  bottom: 10%;
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.36), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  display: grid;
  gap: 14px;
  left: 50%;
  max-width: 800px;
  padding: 14px;
  position: absolute;
  transform: translateX(-50%);
  width: min(800px, 54%);
  z-index: 4;
}

.spatial-room__surface {
  background: linear-gradient(180deg, rgba(225, 245, 247, 0.15), rgba(21, 24, 27, 0.52));
  border: 2px solid rgba(151, 213, 223, 0.24);
  border-radius: 8px;
  min-height: 260px;
  overflow: hidden;
  padding: 14px;
}

.spatial-room__surface.is-committing {
  animation: manipulatorCommit 390ms ease both;
}

.spatial-board {
  align-items: stretch;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(120px, 1fr) 82px minmax(120px, 1fr);
  min-height: 230px;
}

.spatial-board__source,
.spatial-board__answer {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(151, 213, 223, 0.22);
  border-radius: 8px;
  display: grid;
  gap: 8px;
  justify-items: center;
  padding: 10px;
}

.spatial-board__source > span,
.spatial-board__answer > span {
  color: rgba(235, 250, 251, 0.74);
  font-size: 0.68rem;
  font-weight: 900;
  text-transform: uppercase;
}

.spatial-board__device {
  align-items: center;
  display: grid;
  justify-items: center;
  position: relative;
}

.spatial-device-glyph {
  align-items: center;
  border: 2px solid rgba(151, 213, 223, 0.46);
  display: grid;
  height: 72px;
  justify-items: center;
  position: relative;
  width: 72px;
}

.spatial-device-glyph--wheel {
  border-radius: 999px;
}

.spatial-device-glyph--wheel::before {
  background: conic-gradient(from 0deg, rgba(255, 220, 130, 0.65), rgba(151, 213, 223, 0.18), rgba(255, 220, 130, 0.65));
  border-radius: 999px;
  content: "";
  inset: 10px;
  position: absolute;
}

.spatial-device-glyph--mirror {
  border-radius: 8px;
  transform: skewY(-6deg);
}

.spatial-device-glyph--mirror::before {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.6), rgba(151, 213, 223, 0.08));
  content: "";
  inset: 10px;
  position: absolute;
}

.spatial-device-glyph--horizontal {
  transform: skewX(-6deg);
}

.spatial-device-glyph--press {
  border-radius: 8px;
}

.spatial-device-glyph--press::before,
.spatial-device-glyph--chamber::before {
  background: rgba(151, 213, 223, 0.36);
  border: 2px solid rgba(255, 255, 255, 0.36);
  border-radius: 6px;
  content: "";
  height: 34px;
  position: absolute;
  width: 46px;
}

.spatial-device-glyph--chamber {
  border-radius: 16px;
}

.spatial-operation-path {
  background: linear-gradient(90deg, rgba(255, 220, 130, 0), rgba(255, 220, 130, 0.72), rgba(255, 220, 130, 0));
  height: 4px;
  left: -32px;
  opacity: 0.5;
  position: absolute;
  right: -32px;
  top: 50%;
  transform: translateY(-50%);
  z-index: -1;
}

.spatial-board.is-revealed .spatial-operation-path,
.spatial-board.is-revealed .spatial-answer-frame,
.spatial-board.is-revealed .spatial-device-glyph {
  animation: rulePulse 1450ms ease-in-out both;
}

.spatial-source-single,
.spatial-answer-frame,
.spatial-source-pair__item {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  display: grid;
  justify-items: center;
  min-height: 132px;
  min-width: 132px;
  padding: 8px;
}

.spatial-source-pair {
  align-items: center;
  display: flex;
  gap: 8px;
  justify-content: center;
}

.spatial-source-pair__item {
  min-height: 104px;
  min-width: 104px;
}

.spatial-figure-svg {
  display: block;
  height: 112px;
  width: 112px;
}

.spatial-figure-svg--small {
  height: 74px;
  width: 74px;
}

.spatial-empty {
  align-items: center;
  border: 2px dashed rgba(235, 250, 251, 0.54);
  border-radius: 14px;
  color: rgba(235, 250, 251, 0.72);
  display: grid;
  font-size: 0.68rem;
  font-weight: 900;
  height: 104px;
  justify-items: center;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  width: 104px;
}

.spatial-controls .btn {
  min-width: 112px;
}

.spatial-compare .spatial-figure-svg {
  height: 80px;
  width: 80px;
}

.paperfold-room__scene {
  background:
    linear-gradient(180deg, rgba(22, 18, 15, 0.02), rgba(22, 15, 10, 0.32)),
    url("../img/room-folding-bench.svg") center / cover no-repeat;
}

.paperfold-room__copy {
  background: linear-gradient(180deg, rgba(34, 28, 21, 0.88), rgba(24, 19, 15, 0.68));
  border: 2px solid rgba(224, 194, 125, 0.34);
  border-radius: 10px;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.28), inset 0 1px 0 rgba(255, 247, 219, 0.14);
  max-width: min(820px, 66%);
  padding: 10px 22px 12px;
  top: 2%;
}

.paperfold-room__copy h2 {
  font-size: clamp(1.45rem, 3vw, 2.75rem);
}

.paperfold-room__copy p {
  font-size: clamp(0.9rem, 1.25vw, 1.05rem);
}

.paperfold-room__wall,
.paperfold-room__choices,
.paperfold-room__station {
  position: absolute;
  z-index: 4;
}

.paperfold-room__wall {
  background: linear-gradient(180deg, rgba(63, 72, 61, 0.92), rgba(28, 33, 29, 0.94));
  border: 3px solid rgba(224, 194, 125, 0.78);
  border-radius: 8px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  display: grid;
  gap: 12px;
  grid-template-rows: auto 1fr;
  left: 5.2%;
  padding: 12px;
  top: 26%;
  width: min(282px, 21%);
}

.paperfold-slots {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.paperfold-slot {
  align-items: center;
  aspect-ratio: 1.05;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(224, 194, 125, 0.22);
  border-radius: 6px;
  display: grid;
  justify-items: center;
  min-height: 0;
  padding: 6px;
  position: relative;
}

.paperfold-slot.is-current {
  border-color: rgba(255, 220, 130, 0.86);
  box-shadow: 0 0 0 2px rgba(255, 220, 130, 0.13);
}

.paperfold-slot.is-lit {
  background: radial-gradient(circle at 50% 25%, rgba(255, 220, 130, 0.28), rgba(255, 255, 255, 0.08));
}

.paperfold-room__choices {
  background: linear-gradient(180deg, rgba(60, 45, 31, 0.93), rgba(27, 23, 19, 0.96));
  border: 3px solid rgba(224, 194, 125, 0.74);
  border-radius: 8px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.14);
  padding: 12px;
  right: 5.2%;
  top: 25%;
  width: min(400px, 28%);
}

.paperfold-choice-row {
  display: grid;
  gap: 9px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.paperfold-choice {
  aspect-ratio: 1;
  background: linear-gradient(180deg, rgba(255, 246, 218, 0.14), rgba(64, 43, 27, 0.54));
  border: 2px solid rgba(255, 226, 168, 0.24);
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  justify-items: center;
  min-height: 108px;
  padding: 8px;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.paperfold-choice:not(:disabled):hover,
.paperfold-choice.is-selected {
  border-color: rgba(255, 220, 130, 0.86);
  box-shadow: 0 0 0 3px rgba(255, 220, 130, 0.13);
  transform: translateY(-2px);
}

.paperfold-choice:disabled {
  cursor: default;
}

.paperfold-room__station {
  background: linear-gradient(180deg, rgba(79, 64, 48, 0.94), rgba(28, 25, 21, 0.97));
  border: 3px solid rgba(224, 194, 125, 0.82);
  border-radius: 8px;
  bottom: 6%;
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.36), inset 0 1px 0 rgba(255, 255, 255, 0.16);
  display: grid;
  gap: 14px;
  left: 46%;
  max-width: 600px;
  padding: 14px;
  transform: translateX(-50%);
  width: min(600px, 42%);
}

.paperfold-room__surface {
  background: linear-gradient(180deg, rgba(255, 248, 225, 0.16), rgba(31, 25, 20, 0.56));
  border: 2px solid rgba(224, 194, 125, 0.24);
  border-radius: 8px;
  min-height: 250px;
  overflow: hidden;
  padding: 14px;
}

.paperfold-room__surface.is-committing {
  animation: manipulatorCommit 390ms ease both;
}

.paperfold-bench {
  align-items: stretch;
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(120px, 1fr) 72px minmax(120px, 1fr);
  min-height: 220px;
}

.paperfold-panel {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(224, 194, 125, 0.24);
  border-radius: 8px;
  display: grid;
  gap: 8px;
  justify-items: center;
  padding: 10px;
}

.paperfold-panel > span {
  color: rgba(255, 247, 219, 0.76);
  font-size: 0.64rem;
  font-weight: 900;
  letter-spacing: 0.055em;
  line-height: 1.1;
  max-width: 100%;
  text-align: center;
  text-transform: uppercase;
}

.paperfold-panel--unfolded > span {
  font-size: 0.58rem;
  letter-spacing: 0.02em;
}

.paperfold-device {
  align-items: center;
  display: grid;
  justify-items: center;
  position: relative;
}

.paperfold-device::before {
  background: linear-gradient(180deg, rgba(255, 220, 130, 0.82), rgba(134, 93, 46, 0.72));
  border: 3px solid #15181b;
  border-radius: 999px;
  content: "";
  height: 54px;
  position: absolute;
  width: 54px;
}

.paperfold-device::after {
  background: linear-gradient(90deg, rgba(255, 220, 130, 0), rgba(255, 220, 130, 0.72), rgba(255, 220, 130, 0));
  content: "";
  height: 4px;
  left: -30px;
  position: absolute;
  right: -30px;
  top: 50%;
  transform: translateY(-50%);
  z-index: -1;
}

.paperfold-bench.is-previewing .paperfold-device::before,
.paperfold-bench.is-revealed .paperfold-device::before,
.paperfold-bench.is-revealed .paper-svg.is-revealed {
  animation: rulePulse 1450ms ease-in-out both;
}

.paper-svg {
  display: block;
  height: 132px;
  width: 132px;
}

.paper-svg--small {
  height: 96px;
  width: 96px;
}

.paper-sheet {
  fill: url(#paperSheet);
  stroke: #15181b;
  stroke-width: 3;
}

.paper-shadow {
  fill: #15181b;
  opacity: 0.16;
}

.paper-svg--folded .paper-fold-edge {
  fill: none;
  stroke: #3a2f1d;
  stroke-linecap: round;
  stroke-width: 4.5;
}

.paper-svg--folded .paper-fold-peek {
  fill: url(#paperSheet);
  opacity: 0.95;
  stroke: #866f45;
  stroke-width: 1.2;
}

.paper-creases line {
  fill: none;
  stroke: #866f45;
  stroke-dasharray: 7 6;
  stroke-linecap: round;
  stroke-width: 2.8;
}

.paper-mark--hole circle:first-child {
  fill: #15181b;
  stroke: #fff3d2;
  stroke-width: 1.15;
}

.paper-mark--hole circle:last-child {
  fill: rgba(255, 255, 255, 0.46);
}

.paper-mark--cut rect,
.paper-mark--triangle path {
  fill: #15181b;
  stroke: #fff3d2;
  stroke-width: 1.1;
}

.paper-mark--cut path {
  stroke: rgba(255, 243, 210, 0.88);
  stroke-linecap: round;
  stroke-width: 3;
}

.paper-svg.is-previewing .paper-mark,
.paper-svg.is-revealed .paper-mark {
  animation: foldMarkIn 900ms ease both;
  animation-delay: calc(var(--fold-step, 0) * 70ms);
}

.paperfold-controls .btn {
  min-width: 146px;
}

.paperfold-room__feedback {
  right: 5%;
  top: 27%;
}

.paperfold-compare .paper-svg {
  height: 82px;
  width: 82px;
}

@keyframes foldMarkIn {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

.analogy-room__scene {
  background:
    linear-gradient(180deg, rgba(27, 16, 12, 0.03), rgba(22, 14, 12, 0.3)),
    url("../img/room-bridge-builder.svg") center / cover no-repeat;
}

.analogy-room__avenue,
.analogy-room__station {
  position: absolute;
  z-index: 4;
}

.analogy-room__avenue {
  background: linear-gradient(180deg, rgba(90, 55, 37, 0.92), rgba(35, 24, 21, 0.95));
  border: 3px solid rgba(225, 178, 105, 0.82);
  border-radius: 8px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 238, 191, 0.16);
  display: grid;
  gap: 12px;
  grid-template-rows: auto 1fr;
  left: 5.2%;
  padding: 12px;
  top: 24%;
  width: min(282px, 21%);
}

.analogy-slots {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.analogy-slot {
  align-items: center;
  aspect-ratio: 1.18;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 226, 168, 0.18);
  border-radius: 6px;
  display: grid;
  justify-items: center;
  min-height: 0;
  padding: 6px;
  position: relative;
}

.analogy-slot.is-current {
  border-color: rgba(255, 220, 130, 0.82);
  box-shadow: 0 0 0 2px rgba(255, 220, 130, 0.12);
}

.analogy-slot.is-lit {
  background: radial-gradient(circle at 50% 25%, rgba(255, 220, 130, 0.3), rgba(255, 255, 255, 0.08));
}

.analogy-room__station {
  background: linear-gradient(180deg, rgba(92, 58, 39, 0.94), rgba(32, 23, 20, 0.97));
  border: 3px solid rgba(226, 177, 92, 0.86);
  border-radius: 8px;
  bottom: 8%;
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.36), inset 0 1px 0 rgba(255, 238, 191, 0.16);
  display: grid;
  gap: 14px;
  left: 50%;
  max-width: 760px;
  padding: 14px;
  position: absolute;
  transform: translateX(-50%);
  width: min(760px, 52%);
}

.analogy-room__surface {
  background: linear-gradient(180deg, rgba(255, 239, 200, 0.17), rgba(30, 22, 19, 0.56));
  border: 2px solid rgba(255, 226, 168, 0.24);
  border-radius: 8px;
  min-height: 285px;
  overflow: hidden;
  padding: 12px;
}

.analogy-room__surface.is-committing {
  animation: manipulatorCommit 390ms ease both;
}

.analogy-bridge {
  display: grid;
  gap: 12px;
}

.analogy-bridge__sentence {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 226, 168, 0.18);
  border-radius: 8px;
  display: grid;
  gap: 7px;
  grid-template-columns: auto auto 48px auto 48px auto auto 48px auto 48px;
  min-height: 70px;
  padding: 8px;
}

.analogy-bridge__sentence span,
.analogy-bridge__sentence b,
.analogy-bridge__arch > strong,
.analogy-bridge__cell > span {
  color: rgba(255, 240, 204, 0.76);
  font-size: 0.66rem;
  font-weight: 900;
  text-transform: uppercase;
}

.analogy-bridge__sentence b {
  color: #ffe4a5;
  text-transform: none;
}

.analogy-bridge__sentence .tile-svg,
.analogy-bridge__sentence .object-svg,
.analogy-bridge__sentence .analogy-empty {
  height: 48px;
  width: 48px;
}

.analogy-bridge__arches {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr 1fr;
}

.analogy-bridge__arch {
  background:
    linear-gradient(180deg, rgba(255, 246, 219, 0.12), rgba(42, 29, 23, 0.52));
  border: 2px solid rgba(255, 226, 168, 0.22);
  border-radius: 96px 96px 8px 8px;
  display: grid;
  gap: 8px;
  min-height: 190px;
  padding: 20px 12px 12px;
  position: relative;
}

.analogy-bridge__arch::before {
  border: 4px solid rgba(225, 178, 105, 0.72);
  border-bottom: 0;
  border-radius: 92px 92px 0 0;
  content: "";
  inset: 8px 8px auto;
  height: 72px;
  pointer-events: none;
  position: absolute;
}

.analogy-bridge__arch > strong {
  justify-self: center;
  position: relative;
  z-index: 2;
}

.analogy-bridge__pair {
  align-items: center;
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(74px, 1fr) 34px minmax(74px, 1fr);
  position: relative;
  z-index: 2;
}

.analogy-bridge__cell {
  align-items: center;
  background: rgba(255, 246, 219, 0.18);
  border: 2px solid rgba(255, 226, 168, 0.34);
  border-radius: 8px;
  display: grid;
  gap: 5px;
  justify-items: center;
  min-height: 112px;
  padding: 7px;
}

.analogy-bridge__cell .tile-svg,
.analogy-bridge__cell .object-svg,
.analogy-empty {
  height: 88px;
  width: 88px;
}

.analogy-empty {
  align-items: center;
  background: rgba(255, 249, 227, 0.14);
  border: 3px dashed rgba(255, 240, 204, 0.68);
  border-radius: 8px;
  color: rgba(255, 240, 204, 0.72);
  display: grid;
  font-size: 2rem;
  font-weight: 900;
  justify-items: center;
}

.analogy-bridge__arrow {
  background: rgba(255, 226, 168, 0.58);
  border-radius: 999px;
  height: 5px;
  position: relative;
}

.analogy-bridge__arrow::after {
  border-bottom: 8px solid transparent;
  border-left: 11px solid rgba(255, 226, 168, 0.78);
  border-top: 8px solid transparent;
  content: "";
  position: absolute;
  right: -3px;
  top: 50%;
  transform: translateY(-50%);
}

.analogy-bridge.is-revealed .analogy-bridge__cell--top-a,
.analogy-bridge.is-revealed .analogy-bridge__cell--top-b,
.analogy-bridge.is-revealed .analogy-bridge__cell--bottom-a,
.analogy-bridge.is-revealed .analogy-bridge__cell--bottom-b.has-answer,
.analogy-bridge.is-revealed .analogy-bridge__arrow {
  animation: bridgePulse 1500ms ease-in-out both;
}

.analogy-bridge.is-revealed .analogy-bridge__cell--top-a {
  animation-delay: 0ms;
}

.analogy-bridge.is-revealed .analogy-bridge__cell--top-b {
  animation-delay: 190ms;
}

.analogy-bridge.is-revealed .analogy-bridge__arch--top .analogy-bridge__arrow {
  animation-delay: 95ms;
}

.analogy-bridge.is-revealed .analogy-bridge__cell--bottom-a {
  animation-delay: 610ms;
}

.analogy-bridge.is-revealed .analogy-bridge__cell--bottom-b.has-answer {
  animation-delay: 800ms;
}

.analogy-bridge.is-revealed .analogy-bridge__arch--bottom .analogy-bridge__arrow {
  animation-delay: 705ms;
}

.flying-keystone {
  animation: tileFlight 390ms cubic-bezier(0.22, 0.86, 0.24, 1) both;
  bottom: 20%;
  height: 88px;
  left: 50%;
  pointer-events: none;
  position: absolute;
  transform-origin: center;
  width: 88px;
  z-index: 7;
}

.analogy-room__feedback {
  top: 26%;
}

.analogy-compare .tile-svg {
  height: 82px;
  width: 82px;
}

@keyframes bridgePulse {
  0% {
    box-shadow: 0 0 0 rgba(255, 220, 110, 0);
    filter: brightness(1);
    transform: scale(1);
  }

  36% {
    box-shadow: 0 0 24px rgba(255, 220, 110, 0.56);
    filter: brightness(1.18);
    transform: scale(1.035);
  }

  100% {
    box-shadow: 0 0 10px rgba(255, 220, 110, 0.22);
    filter: brightness(1);
    transform: scale(1);
  }
}

.serial-room__scene {
  background:
    linear-gradient(180deg, rgba(21, 28, 20, 0.03), rgba(12, 16, 13, 0.32)),
    url("../img/room-loom-highlands.svg") center / cover no-repeat;
}

.serial-room__wall,
.serial-room__station {
  position: absolute;
  z-index: 4;
}

.serial-room__wall {
  background: linear-gradient(180deg, rgba(54, 69, 49, 0.92), rgba(26, 33, 27, 0.95));
  border: 3px solid rgba(217, 192, 113, 0.82);
  border-radius: 8px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 238, 191, 0.16);
  display: grid;
  gap: 12px;
  grid-template-rows: auto 1fr;
  left: 5.2%;
  padding: 12px;
  top: 24%;
  width: min(282px, 21%);
}

.serial-slots {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.serial-slot {
  align-items: center;
  aspect-ratio: 1.18;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 226, 168, 0.18);
  border-radius: 6px;
  display: grid;
  justify-items: center;
  min-height: 0;
  padding: 6px;
  position: relative;
}

.serial-slot.is-current {
  border-color: rgba(255, 220, 130, 0.82);
  box-shadow: 0 0 0 2px rgba(255, 220, 130, 0.12);
}

.serial-slot.is-lit {
  background: radial-gradient(circle at 50% 25%, rgba(255, 220, 130, 0.3), rgba(255, 255, 255, 0.08));
}

.serial-room__station {
  background: linear-gradient(180deg, rgba(63, 81, 50, 0.94), rgba(28, 30, 22, 0.97));
  border: 3px solid rgba(224, 191, 101, 0.86);
  border-radius: 8px;
  bottom: auto;
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.36), inset 0 1px 0 rgba(255, 238, 191, 0.16);
  display: grid;
  gap: 14px;
  left: 50%;
  max-width: 640px;
  padding: 14px;
  position: absolute;
  top: 20%;
  transform: translateX(-50%);
  width: min(640px, 48%);
}

.serial-room__surface {
  background: linear-gradient(180deg, rgba(255, 239, 200, 0.16), rgba(22, 29, 21, 0.58));
  border: 2px solid rgba(255, 226, 168, 0.24);
  border-radius: 8px;
  display: grid;
  justify-items: center;
  min-height: 0;
  overflow: hidden;
  padding: 8px;
}

.serial-room__surface.is-committing {
  animation: manipulatorCommit 430ms ease both;
}

.loom-board {
  display: grid;
  gap: 8px;
  width: min(100%, 310px);
}

.loom-grid {
  background:
    linear-gradient(90deg, rgba(255, 244, 214, 0.04), rgba(255, 244, 214, 0.12), rgba(255, 244, 214, 0.04)),
    rgba(25, 28, 22, 0.58);
  border: 3px solid rgba(106, 77, 45, 0.82);
  border-radius: 8px;
  display: grid;
  gap: 6px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 9px;
  position: relative;
}

.loom-grid::before,
.loom-grid::after {
  background: repeating-linear-gradient(90deg, rgba(244, 214, 150, 0.24), rgba(244, 214, 150, 0.24) 4px, transparent 4px, transparent 22px);
  content: "";
  inset: 9px;
  pointer-events: none;
  position: absolute;
}

.loom-grid::after {
  background: repeating-linear-gradient(0deg, rgba(244, 214, 150, 0.18), rgba(244, 214, 150, 0.18) 4px, transparent 4px, transparent 22px);
}

.loom-cell {
  align-items: center;
  aspect-ratio: 1;
  background: rgba(255, 246, 219, 0.16);
  border: 2px solid rgba(255, 226, 168, 0.36);
  border-radius: 8px;
  display: grid;
  justify-items: center;
  min-height: 70px;
  overflow: hidden;
  padding: 8px;
  position: relative;
  z-index: 1;
}

.loom-cell.is-missing {
  background: rgba(255, 249, 227, 0.14);
  border-color: rgba(255, 220, 130, 0.88);
  border-style: dashed;
  box-shadow: inset 0 0 0 2px rgba(21, 24, 27, 0.18), 0 0 20px rgba(255, 220, 130, 0.12);
}

.loom-cell.is-missing:not(.has-answer)::before {
  align-items: center;
  background: rgba(255, 249, 227, 0.9);
  border: 3px dashed rgba(35, 25, 16, 0.9);
  border-radius: 8px;
  color: #21160d;
  content: "?";
  display: grid;
  font-size: 2.2rem;
  font-weight: 900;
  inset: 11%;
  justify-items: center;
  position: absolute;
  z-index: 3;
}

.loom-cell.is-missing:not(.has-answer) .loom-warp {
  opacity: 0;
}

.loom-cell.has-answer {
  border-style: solid;
}

.loom-cell.is-weaving .loom-cell__tile {
  animation: weavePanel 430ms cubic-bezier(0.2, 0.85, 0.2, 1) both;
}

.loom-cell__tile {
  height: min(78px, 100%);
  width: min(78px, 100%);
  z-index: 2;
}

.loom-warp {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(4, 1fr);
  height: 72%;
  width: 72%;
}

.loom-warp span {
  background: linear-gradient(180deg, rgba(255, 226, 168, 0.28), rgba(255, 226, 168, 0.08));
  border-radius: 999px;
}

.loom-line-light {
  border-radius: 7px;
  content: "";
  inset: 5px;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  z-index: 3;
}

.loom-board.is-revealed .loom-line-light {
  animation: loomCheckPulse 1550ms ease-in-out both;
  animation-delay: calc(var(--loom-step, 0) * 110ms);
}

.loom-line-light--row {
  border: 3px solid rgba(255, 220, 130, 0.68);
}

.loom-line-light--column {
  border: 3px solid rgba(128, 211, 138, 0.58);
}

.loom-line-light.is-rule-line {
  box-shadow: 0 0 22px rgba(255, 220, 130, 0.34);
}

.loom-axis-note {
  color: rgba(255, 240, 204, 0.72);
  display: flex;
  font-size: 0.68rem;
  font-weight: 900;
  justify-content: space-between;
  text-transform: uppercase;
}

.loom-spool-panel {
  display: grid;
  gap: 7px;
}

.loom-spool-row {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(5, 82px);
  justify-content: center;
}

.loom-spool {
  aspect-ratio: 1;
  background:
    radial-gradient(circle at 50% 18%, rgba(255, 226, 168, 0.42), transparent 30%),
    linear-gradient(180deg, rgba(255, 248, 226, 0.9), rgba(142, 122, 64, 0.62));
  border: 3px solid rgba(48, 38, 22, 0.74);
  border-radius: 8px;
  cursor: pointer;
  display: grid;
  min-height: 78px;
  padding: 7px;
  position: relative;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.loom-spool:not(:disabled):hover,
.loom-spool.is-selected {
  border-color: rgba(255, 220, 130, 0.84);
  box-shadow: 0 0 0 3px rgba(255, 220, 130, 0.13);
  transform: translateY(-2px);
}

.loom-spool:disabled {
  cursor: default;
}

.loom-spool__pin {
  background: linear-gradient(180deg, #e4bd70, #6e4b2e);
  border-radius: 999px;
  height: 7px;
  left: 14%;
  position: absolute;
  right: 14%;
  top: 9px;
}

.loom-spool__thread {
  align-items: center;
  display: grid;
  justify-items: center;
  margin-top: 8px;
}

.loom-spool__thread .tile-svg {
  height: 62px;
  width: 62px;
}

.serial-controls .btn {
  min-width: 160px;
}

.serial-room__feedback {
  top: 25%;
}

.serial-compare .tile-svg {
  height: 82px;
  width: 82px;
}

@keyframes weavePanel {
  0% {
    filter: brightness(1.16);
    opacity: 0.25;
    transform: translateY(26px) scale(1.08);
  }
  72% {
    filter: brightness(1.1);
    opacity: 1;
    transform: translateY(-4px) scale(1.03);
  }
  100% {
    filter: brightness(1);
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes loomCheckPulse {
  0% {
    opacity: 0;
    transform: scale(0.92);
  }
  32% {
    opacity: 1;
    transform: scale(1.04);
  }
  100% {
    opacity: 0.72;
    transform: scale(1);
  }
}

@media (max-width: 980px) {
  .hero-panel {
    grid-template-columns: 1fr;
  }

  .mosaic-room__scene {
    aspect-ratio: auto;
    min-height: 900px;
  }

  .mosaic-room__wall,
  .mosaic-room__feedback,
  .mosaic-room__station {
    left: 5%;
    position: absolute;
    right: 5%;
    transform: none;
    width: auto;
  }

  .mosaic-room__wall {
    top: 17%;
  }

  .mosaic-room__station {
    bottom: 24%;
    max-width: none;
  }

  .mosaic-room__feedback {
    top: auto;
    bottom: 5%;
  }

  .sorting-room__tray,
  .sorting-room__station {
    left: 5%;
    position: absolute;
    right: 5%;
    transform: none;
    width: auto;
  }

  .sorting-room__tray {
    top: 17%;
  }

  .sorting-room__station {
    bottom: 26%;
    max-width: none;
  }

  .quant-room__tray,
  .quant-room__station,
  .spatial-room__rail,
  .spatial-room__station,
  .paperfold-room__wall,
  .paperfold-room__choices,
  .paperfold-room__station,
  .analogy-room__avenue,
  .analogy-room__station,
  .serial-room__wall,
  .serial-room__station {
    left: 5%;
    position: absolute;
    right: 5%;
    transform: none;
    width: auto;
  }

  .quant-room__tray,
  .spatial-room__rail,
  .paperfold-room__wall,
  .analogy-room__avenue,
  .serial-room__wall {
    top: 17%;
  }

  .quant-room__station,
  .spatial-room__station,
  .paperfold-room__station,
  .analogy-room__station,
  .serial-room__station {
    bottom: 26%;
    max-width: none;
  }

  .paperfold-room__choices {
    top: 40%;
  }

  .analogy-bridge__sentence {
    grid-template-columns: auto auto 48px auto 48px;
  }

  .analogy-bridge__sentence span:nth-of-type(2) {
    grid-column: 1;
  }

  .serial-room__feedback {
    left: 5%;
    right: 5%;
    transform: none;
    width: auto;
  }
}

@media (max-width: 640px) {
  .screen,
  .room-page {
    padding: 12px;
  }

  .app-topbar,
  .room-topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .candidate-row {
    gap: 7px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .candidate-tile {
    min-height: 58px;
  }

  .flying-tile {
    bottom: 16%;
    height: 70px;
    width: 70px;
  }

  .mosaic-room__scene {
    min-height: 1250px;
  }

  .mosaic-board {
    max-height: 260px;
  }

  .mosaic-room__copy {
    top: 2%;
  }

  .mosaic-room__wall {
    top: 20%;
  }

  .mosaic-room__station {
    bottom: auto;
    top: 54%;
  }

  .mosaic-room__feedback {
    bottom: auto;
    top: 84%;
  }

  .pedestal-grid {
    gap: 8px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pedestal-choice {
    min-height: 94px;
  }

  .object-svg {
    height: min(96px, 100%);
    width: min(96px, 100%);
  }

  .flying-object {
    bottom: 18%;
    height: 82px;
    width: 82px;
  }

  .sorting-room__tray {
    top: 19%;
  }

  .sorting-room__tray .removed-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .sorting-room__tray .removed-slot {
    aspect-ratio: 1;
    min-height: 74px;
  }

  .sorting-room__station {
    bottom: auto;
    top: 42%;
  }

  .quant-room__tray {
    top: 19%;
  }

  .quant-room__tray .quant-slots {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .quant-slot {
    aspect-ratio: 1;
    min-height: 74px;
  }

  .quant-room__station {
    bottom: auto;
    top: 42%;
  }

  .spatial-room__rail {
    top: 19%;
  }

  .spatial-room__rail .spatial-slots {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .spatial-slot {
    aspect-ratio: 1;
    min-height: 74px;
  }

  .spatial-room__station {
    bottom: auto;
    top: 42%;
  }

  .spatial-room__surface {
    min-height: 450px;
    padding: 10px;
  }

  .spatial-board {
    grid-template-columns: 1fr;
    min-height: 420px;
  }

  .spatial-board__device {
    min-height: 74px;
  }

  .spatial-operation-path {
    left: 50%;
    right: auto;
    top: -22px;
    transform: translateX(-50%) rotate(90deg);
    width: 120px;
  }

  .spatial-source-single,
  .spatial-answer-frame {
    min-height: 112px;
    min-width: 112px;
  }

  .spatial-source-pair__item {
    min-height: 86px;
    min-width: 86px;
  }

  .spatial-figure-svg {
    height: 94px;
    width: 94px;
  }

  .spatial-controls .btn {
    min-width: min(136px, 100%);
  }

  .paperfold-room__wall {
    top: 19%;
  }

  .paperfold-room__scene {
    min-height: 1500px;
  }

  .paperfold-room__wall .paperfold-slots {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .paperfold-slot {
    aspect-ratio: 1;
    min-height: 74px;
  }

  .paperfold-room__choices {
    top: 42%;
  }

  .paperfold-choice-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .paperfold-choice {
    min-height: 88px;
  }

  .paperfold-room__station {
    bottom: auto;
    top: 61%;
  }

  .analogy-room__scene {
    min-height: 2050px;
  }

  .analogy-room__avenue {
    top: 19%;
  }

  .analogy-room__avenue .analogy-slots {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .analogy-slot {
    aspect-ratio: 1;
    min-height: 74px;
  }

  .analogy-room__station {
    bottom: auto;
    top: 37%;
  }

  .analogy-room__surface {
    min-height: auto;
    padding: 10px;
  }

  .analogy-bridge__sentence {
    grid-template-columns: 1fr 1fr;
  }

  .analogy-bridge__sentence div {
    justify-self: center;
  }

  .analogy-bridge__arches {
    grid-template-columns: 1fr;
  }

  .analogy-bridge__arch {
    min-height: 150px;
    padding: 18px 8px 10px;
  }

  .analogy-bridge__pair {
    gap: 6px;
    grid-template-columns: minmax(58px, 1fr) 26px minmax(58px, 1fr);
  }

  .analogy-bridge__cell {
    min-height: 92px;
    padding: 6px;
  }

  .analogy-bridge__cell .tile-svg,
  .analogy-empty {
    height: 68px;
    width: 68px;
  }

  .analogy-room__feedback {
    bottom: auto;
    top: 83%;
  }

  .serial-room__scene {
    min-height: 1700px;
  }

  .serial-room__wall {
    top: 19%;
  }

  .serial-room__wall .serial-slots {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .serial-slot {
    aspect-ratio: 1;
    min-height: 74px;
  }

  .serial-room__station {
    bottom: auto;
    top: 39%;
  }

  .serial-room__surface {
    min-height: 380px;
    padding: 10px;
  }

  .loom-grid {
    gap: 6px;
    padding: 9px;
  }

  .loom-cell {
    min-height: 82px;
    padding: 6px;
  }

  .loom-cell__tile {
    height: 74px;
    width: 74px;
  }

  .loom-spool-row {
    gap: 7px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .loom-spool {
    min-height: 76px;
  }

  .loom-spool__thread .tile-svg {
    height: 62px;
    width: 62px;
  }

  .serial-room__feedback {
    bottom: auto;
    top: 82%;
  }

  .paperfold-room__surface {
    min-height: 430px;
    padding: 10px;
  }

  .paperfold-bench {
    grid-template-columns: 1fr;
    min-height: 400px;
  }

  .paperfold-device {
    min-height: 64px;
  }

  .paperfold-device::after {
    left: 50%;
    right: auto;
    top: -18px;
    transform: translateX(-50%) rotate(90deg);
    width: 116px;
  }

  .paper-svg {
    height: 116px;
    width: 116px;
  }

  .paper-svg--small {
    height: 74px;
    width: 74px;
  }

  .quant-board {
    min-height: 230px;
    padding: 10px;
  }

  .abacus-board {
    gap: 10px;
  }

  .abacus-rail {
    min-height: 45px;
    padding: 7px 9px;
  }

  .abacus-bead {
    height: 27px;
    width: 27px;
  }

  .counter-button,
  .counter-readout {
    height: 48px;
    width: 54px;
  }

  .transfer-pair {
    gap: 8px;
    grid-template-columns: 1fr 30px 1fr;
  }

  .transfer-tray {
    min-height: 88px;
  }

  .balance-frame {
    transform: scale(0.86);
    transform-origin: center;
  }

  .token-groove,
  .token-choice-row {
    gap: 7px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* Final Logica readability rebalance: make puzzle work areas dominate the room chrome. */
.room-page {
  padding: 10px 14px;
}

.room-topbar {
  margin-bottom: 8px;
  padding: 6px 10px;
}

.room-topbar strong {
  font-size: clamp(1.05rem, 2.05vw, 1.75rem);
  letter-spacing: 0.01em;
}

.room-topbar span,
.room-topbar p {
  font-size: 0.76rem;
}

.room-progress {
  height: 7px;
  margin-bottom: 8px;
}

.mosaic-room__copy {
  max-width: min(980px, 80%);
  top: 2.2%;
}

.mosaic-room__copy span,
.mosaic-room__wall-title span,
.mosaic-room__tray-title,
.mosaic-room__feedback span,
.reward-panel > span {
  font-size: 0.64rem;
  letter-spacing: 0.075em;
}

.mosaic-room__copy h2 {
  font-size: clamp(1.55rem, 2.8vw, 2.75rem);
  margin-bottom: 4px;
}

.mosaic-room__copy p {
  color: #fff4dc;
  font-size: clamp(1.08rem, 1.25vw, 1.28rem);
  font-weight: 800;
  line-height: 1.32;
  margin: 0 auto;
  max-width: 900px;
}

.btn {
  font-size: 1rem;
  min-height: 44px;
  padding: 10px 18px;
}

@media (min-width: 981px) {
  .mosaic-room__scene {
    min-height: min(810px, calc(100vh - 82px));
  }

  .mosaic-room__wall,
  .sorting-room__tray,
  .quant-room__tray,
  .spatial-room__rail,
  .paperfold-room__wall,
  .analogy-room__avenue,
  .serial-room__wall {
    border-width: 2px;
    gap: 7px;
    left: 3%;
    padding: 8px;
    top: 21%;
    width: min(210px, 15.5%);
  }

  .mosaic-room__wall-title strong {
    font-size: 0.82rem;
    line-height: 1.05;
  }

  .mini-wall,
  .removed-grid,
  .quant-slots,
  .spatial-slots,
  .paperfold-slots,
  .analogy-slots,
  .serial-slots {
    gap: 5px;
  }

  .mini-panel,
  .removed-slot,
  .quant-slot,
  .spatial-slot,
  .paperfold-slot,
  .analogy-slot,
  .serial-slot {
    border-radius: 5px;
    padding: 4px;
  }

  .mini-panel__num {
    font-size: 0.58rem;
    height: 16px;
    top: -8px;
    width: 16px;
  }

  .mosaic-room__station {
    bottom: 4.5%;
    max-width: 900px;
    padding: 18px;
    width: min(900px, 64%);
  }

  .mosaic-board {
    max-height: min(430px, 49vh);
    width: min(680px, 100%);
  }

  .candidate-row {
    grid-template-columns: repeat(5, minmax(112px, 1fr));
  }

  .candidate-tile {
    min-height: 118px;
  }

  .mosaic-room__feedback {
    border-width: 2px;
    right: 3%;
    top: 22%;
    width: min(300px, 20%);
  }

  .mosaic-room__feedback strong {
    font-size: 1.08rem;
  }

  .mosaic-room__feedback p {
    font-size: 1rem;
  }

  .sorting-room__station {
    bottom: 4.5%;
    max-width: 820px;
    padding: 16px;
    width: min(820px, 56%);
  }

  .pedestal-choice {
    min-height: 136px;
  }

  .object-svg {
    height: min(128px, 100%);
    width: min(128px, 100%);
  }

  .quant-room__station {
    bottom: 8%;
    max-width: 900px;
    padding: 18px;
    width: min(900px, 64%);
  }

  .quant-board {
    min-height: 275px;
  }

  .abacus-rail {
    min-height: 62px;
  }

  .transfer-tray {
    min-height: 124px;
  }

  .balance-board {
    min-height: 300px;
  }

  .token-choice,
  .token-groove__slot {
    min-height: 100px;
  }

  .spatial-room__station {
    bottom: 7%;
    max-width: 930px;
    padding: 18px;
    width: min(930px, 64%);
  }

  .spatial-room__surface {
    min-height: 315px;
  }

  .spatial-board {
    min-height: 275px;
  }

  .spatial-source-single,
  .spatial-answer-frame,
  .spatial-source-pair__item {
    min-height: 156px;
    min-width: 156px;
  }

  .spatial-figure-svg {
    height: 136px;
    width: 136px;
  }

  .paperfold-room__copy {
    max-width: min(860px, 68%);
    padding: 8px 18px 10px;
  }

  .paperfold-room__choices {
    border-width: 2px;
    padding: 10px;
    right: 3%;
    top: 23%;
    width: min(360px, 24%);
  }

  .paperfold-choice {
    min-height: 116px;
  }

  .paperfold-room__station {
    bottom: 4.5%;
    left: 46%;
    max-width: 720px;
    padding: 16px;
    width: min(720px, 48%);
  }

  .paperfold-room__surface {
    min-height: 290px;
  }

  .paperfold-bench {
    min-height: 250px;
  }

  .paper-svg {
    height: 148px;
    width: 148px;
  }

  .analogy-room__station {
    bottom: 4.8%;
    max-width: 980px;
    padding: 18px;
    width: min(980px, 68%);
  }

  .analogy-room__surface {
    min-height: 350px;
  }

  .analogy-bridge__sentence {
    min-height: 82px;
  }

  .analogy-bridge__arch {
    min-height: 220px;
  }

  .analogy-bridge__cell {
    min-height: 130px;
  }

  .analogy-bridge__cell .tile-svg,
  .analogy-bridge__cell .object-svg,
  .analogy-empty {
    height: 102px;
    width: 102px;
  }

  .serial-room__station {
    max-width: 780px;
    padding: 18px;
    top: 16%;
    width: min(780px, 58%);
  }

  .loom-board {
    width: min(100%, 390px);
  }

  .loom-cell {
    min-height: 94px;
  }

  .loom-cell__tile {
    height: min(90px, 100%);
    width: min(90px, 100%);
  }

  .loom-spool-row {
    grid-template-columns: repeat(5, 92px);
  }

  .loom-spool {
    min-height: 88px;
  }

  .loom-spool__thread .tile-svg {
    height: 72px;
    width: 72px;
  }
}

/* Keep full-width rooms inside the padded viewport. */
.room-topbar,
.room-progress,
.mosaic-room {
  max-width: min(1440px, calc(100vw - 28px));
}

html,
body,
#app,
.room-page {
  overflow-x: hidden;
}

.paperfold-choice .paper-svg {
  height: min(96px, 100%);
  width: min(96px, 100%);
}

.paperfold-slot {
  overflow: hidden;
  place-items: center;
}

.paperfold-room__wall .paper-svg {
  height: min(68px, calc(100% - 10px));
  width: min(68px, calc(100% - 10px));
}