body {
  min-width: 320px;
  min-height: 100vh;
}

.page-shell {
  display: grid;
  min-height: 100vh;
  padding: 20px;
  place-items: start center;
}

.game-card {
  width: min(100%, 1120px);
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: 34px;
  background: linear-gradient(135deg, var(--surface), #f6f0e2);
  box-shadow: var(--shadow);
}

.game-navigation {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.game-navigation .brand-lock {
  gap: 8px;
  text-align: left;
}

.game-navigation .brand-mark {
  width: 38px;
  height: 38px;
}

.game-navigation .brand-name {
  font-size: 1.05rem;
}

.game-navigation .brand-name small {
  font-size: 0.53rem;
}

.back-link {
  color: var(--navy);
  font: 800 0.82rem var(--sans);
  text-decoration: none;
}

.back-link:hover {
  color: var(--gold-dark);
  text-decoration: underline;
}

h1,
h2,
p {
  margin-top: 0;
}

h1,
h2 {
  color: var(--navy);
  font-family: var(--serif);
}

h1 {
  margin-bottom: 7px;
  text-align: center;
  font-size: clamp(2.15rem, 5vw, 3.35rem);
  line-height: 1;
}

h2 {
  margin-bottom: 7px;
  font-size: clamp(1.45rem, 4vw, 2.05rem);
  line-height: 1.05;
}

.game-card > .eyebrow {
  display: flex;
  justify-content: center;
}

.intro {
  max-width: 680px;
  margin: 0 auto 22px;
  color: #3e4142;
  text-align: center;
  font-size: 1.05rem;
  line-height: 1.55;
}

.objective,
.challenge {
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.game-workspace {
  display: grid;
  grid-template-columns: minmax(245px, 0.62fr) minmax(470px, 1.38fr);
  align-items: start;
  gap: 16px;
}

.objective {
  position: sticky;
  top: 16px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
  padding: 22px;
  background: linear-gradient(110deg, var(--navy) 0%, #173a56 100%);
}

.objective-copy h2 {
  color: var(--white);
}

.objective-copy p:not(.section-label) {
  max-width: 280px;
  margin-bottom: 0;
  color: #e7edf1;
  font-size: 0.94rem;
  line-height: 1.55;
}

.section-label {
  margin-bottom: 7px;
  color: var(--gold-dark);
  font: 900 0.68rem var(--sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.objective .section-label {
  color: #e8d883;
}

.target-grid,
.puzzle-grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-size, 3), minmax(0, 1fr));
  gap: clamp(6px, 1.6vw, 10px);
}

.target-grid {
  width: min(100%, 260px);
  align-self: center;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  background: rgba(3, 13, 23, 0.28);
}

.cube-face {
  position: relative;
  display: block;
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid rgba(6, 27, 49, 0.46);
  border-radius: 7px;
  background: #111d29;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16), inset 0 -5px 10px rgba(2, 11, 19, 0.2);
}

.cube-face__surface {
  position: absolute;
  inset: -1px;
  display: block;
  transform: rotate(var(--face-rotation, 0deg));
  transform-origin: center;
  transition: transform 240ms cubic-bezier(0.34, 1.4, 0.64, 1);
}

.cube-face--yellow .cube-face__surface {
  background: #f1c84d;
}

.cube-face--black .cube-face__surface {
  background: #111d29;
}

.cube-face--diagonal .cube-face__surface {
  background: linear-gradient(135deg, #f1c84d 0 49.25%, #111d29 50% 100%);
}

.cube-face::after {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.15);
  content: "";
  pointer-events: none;
}

.challenge {
  min-width: 0;
  padding: clamp(20px, 3vw, 28px);
  background: rgba(255, 253, 246, 0.76);
}

.challenge-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.challenge-header h2,
.challenge-header .section-label {
  margin-bottom: 0;
}

.challenge-tools {
  display: flex;
  flex-direction: column;
  align-items: end;
  gap: 7px;
}

.level-picker {
  display: flex;
  overflow: hidden;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper-2);
}

.level-option {
  min-width: 72px;
  padding: 7px 8px 6px;
  border: 0;
  border-radius: 10px;
  color: var(--navy);
  background: transparent;
  cursor: pointer;
  font: 900 0.73rem/1 var(--sans);
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.level-option small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font: 700 0.59rem/1 var(--sans);
}

.level-option:not(:disabled):hover,
.level-option:not(:disabled):focus-visible {
  background: rgba(6, 27, 49, 0.09);
}

.level-option.is-selected {
  color: var(--white);
  background: var(--navy);
  box-shadow: 0 3px 7px rgba(6, 27, 49, 0.18);
}

.level-option.is-selected small {
  color: var(--gold-soft);
}

.level-option:disabled {
  opacity: 0.68;
  cursor: default;
}

.level-option.is-selected:disabled {
  opacity: 1;
}

.game-message {
  max-width: 260px;
  margin-bottom: 2px;
  color: var(--gold-dark);
  text-align: right;
  font: 800 0.85rem/1.35 var(--sans);
}

.game-status {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 16px;
}

.game-status p {
  margin: 0;
  padding: 11px 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--muted);
  text-align: center;
  font: 800 0.7rem var(--sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.game-status strong {
  color: var(--navy);
}

.time-panel {
  margin-top: 14px;
}

.time-heading {
  display: flex;
  justify-content: space-between;
  margin-bottom: 7px;
  color: var(--muted);
  font: 800 0.74rem var(--sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.time-heading strong {
  color: var(--navy);
}

.time-track {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7dfcb;
}

.time-bar {
  display: block;
  width: var(--time-progress, 100%);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #d3bb53, var(--gold-dark));
  transition: width 100ms linear, background 200ms ease;
}

.time-bar.is-urgent {
  background: #b05742;
}

.instructions {
  margin: 14px 0 13px;
  color: #4f514c;
  text-align: center;
  font-size: 0.9rem;
  line-height: 1.55;
}

.instructions span {
  display: inline-grid;
  width: 23px;
  height: 23px;
  margin: 0 3px;
  border-radius: 50%;
  place-items: center;
  color: var(--navy);
  background: var(--gold-soft);
  font: 900 1rem/1 var(--sans);
}

.puzzle-grid {
  width: min(100%, 420px);
  margin: 0 auto;
  padding: clamp(9px, 2vw, 14px);
  border: 1px solid #c7b981;
  border-radius: 20px;
  background: #d5c992;
}

.puzzle-slot {
  min-width: 0;
  border-radius: 10px;
  background: rgba(6, 27, 49, 0.13);
}

.puzzle-cube {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: 10px;
  cursor: grab;
  background: transparent;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.puzzle-cube:active {
  cursor: grabbing;
}

.puzzle-cube .cube-face {
  border-radius: 10px;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.puzzle-cube:not(:disabled):hover .cube-face,
.puzzle-cube:not(:disabled):focus-visible .cube-face {
  transform: translateY(-3px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2), 0 8px 16px rgba(6, 27, 49, 0.2);
}

.puzzle-cube:focus-visible {
  outline: 3px solid var(--white);
  outline-offset: 3px;
}

.puzzle-cube.is-correct .cube-face {
  box-shadow: inset 0 0 0 3px #fff5bd, 0 0 0 3px rgba(132, 116, 46, 0.46);
}

.puzzle-cube.is-dragging {
  opacity: 0.2;
}

.puzzle-cube:disabled {
  cursor: default;
}

.drag-ghost {
  position: fixed;
  z-index: 10;
  margin: 0;
  pointer-events: none;
  filter: drop-shadow(0 13px 15px rgba(6, 27, 49, 0.28));
  transform: translate(-50%, -50%) rotate(3deg) scale(1.06);
}

.game-actions,
.result-dialog__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.game-actions {
  margin-top: 17px;
}

.button {
  display: inline-flex;
  min-height: 47px;
  align-items: center;
  justify-content: center;
  padding: 12px 19px;
  border-radius: 999px;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #071523;
  background: var(--gold-2);
}

.button-primary:hover {
  background: var(--gold);
}

.button-secondary {
  border-color: var(--line);
  color: var(--navy);
  background: var(--surface);
}

.button-secondary:hover {
  background: var(--navy-soft);
}

.result-dialog {
  width: min(calc(100% - 32px), 465px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.result-dialog::backdrop {
  background: rgba(3, 12, 22, 0.8);
}

.result-dialog__content {
  padding: clamp(26px, 6vw, 38px);
  text-align: center;
}

.result-dialog__content .eyebrow {
  justify-content: center;
}

.result-dialog__content h2 {
  font-size: clamp(1.85rem, 5vw, 2.4rem);
}

.result-dialog__content > p:not(.eyebrow) {
  margin-bottom: 25px;
  color: #3e4142;
  line-height: 1.55;
}

@media (max-width: 880px) {
  .game-workspace {
    grid-template-columns: 1fr;
  }

  .objective {
    top: 8px;
    z-index: 2;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 14px 16px;
    box-shadow: 0 10px 22px rgba(6, 27, 49, 0.2);
  }

  .objective-copy {
    min-width: 0;
  }

  .objective-copy h2 {
    margin-bottom: 0;
    font-size: clamp(1.25rem, 4vw, 1.6rem);
  }

  .objective-copy p:not(.section-label) {
    display: none;
  }

  .target-grid {
    width: 150px;
    flex: 0 0 150px;
    padding: 7px;
  }
}

@media (max-width: 590px) {
  .page-shell {
    padding: 12px;
  }

  .game-card {
    padding: 25px 18px;
    border-radius: 22px;
  }

  .game-navigation {
    flex-direction: column-reverse;
    align-items: center;
    margin-bottom: 26px;
  }

  .target-grid {
    width: 126px;
    flex-basis: 126px;
  }

  .challenge-header {
    align-items: center;
    flex-direction: column;
    text-align: center;
  }

  .challenge-tools {
    align-items: center;
  }

  .game-message {
    max-width: none;
    text-align: center;
  }

  .instructions span {
    margin-left: 0;
  }

  .game-actions .button,
  .result-dialog__actions .button {
    width: 100%;
    min-height: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}