html,
body {
  overscroll-behavior: none;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

input,
textarea {
  -webkit-user-select: text;
  user-select: text;
  touch-action: manipulation;
}

.game-shell {
  --shell-padding: 0px;
  --stage-width: 100vw;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: block;
  padding: 0;
  overflow: hidden;
}

.stage {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  aspect-ratio: auto;
  border: 0;
  box-shadow: none;
  touch-action: none;
}

#game-canvas {
  width: 100%;
  height: 100%;
}

.hud {
  position: fixed;
  inset:
    max(8px, env(safe-area-inset-top))
    max(8px, env(safe-area-inset-right))
    auto
    max(8px, env(safe-area-inset-left));
  z-index: 9;
  width: min(920px, calc(100vw - max(16px, env(safe-area-inset-left)) - max(16px, env(safe-area-inset-right))));
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "stats actions"
    "progress actions";
  align-items: start;
  gap: 5px 7px;
  pointer-events: none;
}

.hud-group-main {
  grid-area: stats;
  display: grid;
  grid-template-columns: repeat(4, minmax(64px, max-content)) minmax(220px, 1fr);
  align-items: stretch;
  gap: 6px;
  min-width: 0;
}

.metric {
  position: relative;
  min-width: 0;
  min-height: 40px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border: 1px solid rgba(104, 231, 255, 0.22);
  border-radius: 12px 9px 12px 9px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.025)),
    rgba(2, 6, 18, 0.74);
  box-shadow:
    0 10px 24px rgba(0, 0, 0, 0.28),
    inset 0 0 20px rgba(88, 232, 255, 0.055);
  overflow: hidden;
}

.metric-icon {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: #68e7ff;
  background: rgba(104, 231, 255, 0.09);
  box-shadow: inset 0 0 14px rgba(104, 231, 255, 0.11);
}

.metric-icon .ui-icon {
  width: 1.05em;
  height: 1.05em;
}

.metric-copy {
  min-width: 0;
  display: grid;
  gap: 1px;
}

.metric-label {
  display: none;
  min-width: 0;
  color: #b8c9df;
  font-size: 10px;
  font-weight: 900;
  line-height: 1.05;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.metric-progress .metric-label {
  display: block;
  position: static;
  width: auto;
  height: auto;
  margin: 0;
  padding: 0;
  clip: auto;
  clip-path: none;
}

.metric strong {
  min-width: 0;
  overflow: hidden;
  color: #f7fbff;
  font-size: clamp(14px, 1.5vw, 18px);
  font-weight: 900;
  line-height: 1.08;
  text-overflow: ellipsis;
  white-space: nowrap;
}

html[data-language="en"] .hud,
html[data-language="en"] .metric,
html[data-language="en"] .metric-copy,
html[data-language="en"] .metric-label,
html[data-language="en"] .metric strong,
html[data-language="en"] #correct-answers,
html[data-language="en"] #target-correct,
html[data-language="en"] #question-feedback {
  direction: ltr;
  unicode-bidi: plaintext;
}

.metric-score .metric-icon {
  color: #ffd84a;
  background: rgba(255, 216, 74, 0.12);
}

.metric-combo .metric-icon {
  color: #9d7cff;
  background: rgba(157, 124, 255, 0.13);
}

.metric-lives .metric-icon,
.metric-lives strong {
  color: #ff5f9f;
}

.metric-progress .metric-icon {
  color: #67f08b;
  background: rgba(103, 240, 139, 0.12);
}

.metric-mission {
  position: relative;
  inline-size: auto;
  block-size: auto;
  flex: initial;
  grid-template-columns: auto minmax(0, 1fr);
  min-width: 0;
  padding: 5px 8px;
  margin: 0;
  overflow: hidden;
  clip: auto;
  clip-path: none;
  border: 1px solid rgba(104, 231, 255, 0.22);
  white-space: normal;
}

.metric-mission .metric-icon {
  color: #68e7ff;
}

.metric-mission strong {
  font-size: clamp(12px, 1.2vw, 14px);
}

.metric-mission .metric-copy {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 7px;
}

.mission-progress {
  margin-top: 0;
  color: #ffd84a;
  font-size: 11px;
  font-weight: 900;
  white-space: nowrap;
}

.hud-life-icons {
  display: flex;
  align-items: center;
  gap: 2px;
}

.hud-life-icon {
  width: 16px;
  height: 16px;
  display: grid;
  place-items: center;
  color: #ff5f9f;
  filter: drop-shadow(0 0 8px rgba(255, 95, 159, 0.38));
}

.hud-life-icon .ui-icon {
  width: 100%;
  height: 100%;
}

.hud-life-overflow {
  color: #ffd84a;
  font-size: 11px;
  font-weight: 900;
  line-height: 1;
  text-shadow: 0 0 8px rgba(255, 216, 74, 0.42);
  white-space: nowrap;
}

.progress-wrap {
  grid-area: progress;
  position: relative;
  height: 8px;
  margin: 0;
  border: 1px solid rgba(104, 231, 255, 0.2);
  border-radius: 999px;
  background: rgba(3, 8, 24, 0.76);
  box-shadow: 0 0 18px rgba(104, 231, 255, 0.14);
}

#progress-fill {
  border-radius: inherit;
  background:
    linear-gradient(90deg, rgba(103, 240, 139, 0.95), rgba(255, 216, 74, 0.95), rgba(255, 95, 159, 0.9));
  box-shadow: 0 0 16px rgba(255, 216, 74, 0.46);
}

.hud-actions {
  grid-area: actions;
  display: grid;
  grid-template-columns: repeat(2, minmax(62px, auto));
  gap: 6px;
  align-items: stretch;
  pointer-events: auto;
}

.hud-actions .icon-button {
  width: auto;
  min-width: 62px;
  height: 44px;
  display: grid;
  grid-template-columns: auto auto;
  place-content: center;
  align-items: center;
  gap: 5px;
  padding: 0 10px;
  border-radius: 14px;
  border-color: rgba(104, 231, 255, 0.28);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
    rgba(2, 6, 18, 0.82);
}

.hud-actions .icon-button .ui-icon {
  width: 1.25em;
  height: 1.25em;
}

.hud-control-label {
  color: #f7fbff;
  font-size: 11px;
  font-weight: 900;
  line-height: 1;
}

.metric[data-hud-feedback]::after,
.progress-wrap[data-hud-feedback]::after {
  content: attr(data-hud-feedback);
  position: absolute;
  inset-block-start: 4px;
  inset-inline-end: 6px;
  z-index: 2;
  padding: 2px 6px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(3, 8, 24, 0.86);
  color: #ffd84a;
  font-size: 10px;
  font-weight: 900;
  line-height: 1;
  opacity: 0;
  transform: translateY(4px) scale(0.92);
  pointer-events: none;
}

.hud-score-change::after,
.hud-combo-milestone::after,
.hud-life-loss::after,
.hud-life-gain::after,
.hud-mission-progress::after,
.hud-mission-reset::after,
.hud-mission-complete::after,
.hud-progress-complete::after {
  animation: hudFeedbackPop 860ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.hud-score-change {
  animation: hudScorePulse 520ms ease;
}

.hud-combo-milestone {
  animation: hudComboMilestone 760ms ease;
}

.hud-life-loss {
  animation: hudLifeLoss 620ms ease;
}

.metric-lives.hud-life-loss::before {
  content: "";
  position: absolute;
  inset-inline-start: 50%;
  inset-block-start: 50%;
  z-index: 4;
  width: 25px;
  height: 23px;
  background: #ff4c5f;
  clip-path: polygon(50% 92%, 10% 54%, 6% 36%, 12% 21%, 25% 12%, 38% 14%, 50% 27%, 62% 14%, 75% 12%, 88% 21%, 94% 36%, 90% 54%);
  filter:
    drop-shadow(0 0 5px rgba(255, 76, 95, 0.94))
    drop-shadow(0 0 10px rgba(255, 76, 95, 0.7));
  opacity: 0;
  transform: translate(-50%, -50%) scale(1);
  pointer-events: none;
  animation: hudHeartBreak 760ms cubic-bezier(0.2, 0.78, 0.22, 1);
}

.hud-life-gain,
.hud-mission-progress,
.hud-mission-complete,
.hud-progress-complete {
  animation: hudPositivePulse 680ms ease;
}

@keyframes hudFeedbackPop {
  0% {
    opacity: 0;
    transform: translateY(4px) scale(0.9);
  }
  22%,
  68% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translateY(-8px) scale(0.96);
  }
}

@keyframes hudScorePulse {
  0%,
  100% {
    border-color: rgba(104, 231, 255, 0.22);
    transform: translateZ(0);
  }
  48% {
    border-color: rgba(255, 216, 74, 0.88);
    transform: translateY(-1px) scale(1.018);
    box-shadow:
      0 0 0 3px rgba(255, 216, 74, 0.16),
      0 12px 26px rgba(0, 0, 0, 0.28),
      inset 0 0 22px rgba(255, 216, 74, 0.16);
  }
}

@keyframes hudComboMilestone {
  0%,
  100% {
    transform: translateZ(0);
  }
  42% {
    border-color: rgba(157, 124, 255, 0.88);
    transform: translateY(-1px) scale(1.025);
    box-shadow:
      0 0 0 3px rgba(157, 124, 255, 0.16),
      inset 0 0 24px rgba(157, 124, 255, 0.18);
  }
}

@keyframes hudLifeLoss {
  0%,
  100% {
    transform: translateX(0);
  }
  18% {
    transform: translateX(-4px);
  }
  36% {
    border-color: rgba(255, 76, 95, 0.88);
    transform: translateX(4px);
    box-shadow:
      0 0 0 3px rgba(255, 76, 95, 0.16),
      inset 0 0 24px rgba(255, 76, 95, 0.18);
  }
  54% {
    transform: translateX(-2px);
  }
}

@keyframes hudHeartBreak {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.62);
  }
  18% {
    opacity: 1;
    transform: translate(-50%, -58%) scale(1.32);
  }
  46% {
    opacity: 1;
    filter: saturate(1.35);
    transform: translate(-50%, -78%) rotate(-9deg) scale(1.04);
  }
  100% {
    opacity: 0;
    filter: saturate(0.55);
    transform: translate(-50%, -148%) rotate(14deg) scale(0.38);
  }
}

@keyframes hudPositivePulse {
  0%,
  100% {
    transform: translateZ(0);
  }
  45% {
    border-color: rgba(103, 240, 139, 0.9);
    transform: translateY(-1px) scale(1.016);
    box-shadow:
      0 0 0 3px rgba(103, 240, 139, 0.16),
      inset 0 0 24px rgba(103, 240, 139, 0.16);
  }
}

.mobile-joystick,
.joystick-base,
.joystick-knob,
html.control-joystick .mobile-joystick,
html.control-swipe .mobile-joystick {
  display: none !important;
}

.mode-field,
.difficulty-field {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  border: 0;
}

.mode-field legend,
.difficulty-field legend {
  width: 100%;
  padding: 0;
  color: var(--ink);
  font-size: 15px;
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
}

.mode-options,
.difficulty-options {
  display: grid;
  gap: 7px;
}

.mode-options {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.difficulty-options,
#start-screen .difficulty-options {
  grid-template-columns: repeat(5, minmax(0, 1fr)) !important;
}

.mode-options label,
.difficulty-options label {
  min-width: 0;
}

.mode-options input,
.difficulty-options input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.mode-options span,
.difficulty-options span {
  display: grid;
  min-height: 42px;
  place-items: center;
  padding: 6px 8px;
  border: 1px solid rgba(104, 231, 255, 0.32);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.025));
  color: var(--ink);
  cursor: pointer;
  font-weight: 800;
  line-height: 1.15;
  text-align: center;
}

.mode-options small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.mode-options input:checked + span,
.difficulty-options input:checked + span {
  border-color: rgba(255, 216, 74, 0.82);
  background: linear-gradient(180deg, rgba(255, 216, 74, 0.22), rgba(255, 216, 74, 0.08));
  color: var(--gold);
}

.difficulty-locked span {
  cursor: not-allowed;
  opacity: 0.48;
  filter: grayscale(0.35);
}

.difficulty-locked span::after {
  content: "נעול";
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
}

.results-panel {
  width: min(880px, calc(100vw - 28px));
  text-align: center;
}

.record-badge {
  display: inline-grid;
  min-height: 28px;
  place-items: center;
  margin-bottom: 8px;
  padding: 5px 12px;
  border: 1px solid rgba(255, 216, 74, 0.56);
  border-radius: 8px;
  background: rgba(255, 216, 74, 0.13);
  color: var(--gold);
  font-weight: 900;
}

.record-badge[hidden] {
  display: none;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
  margin: 12px 0 16px;
  text-align: right;
}

.results-grid span {
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid rgba(104, 231, 255, 0.16);
  border-radius: 8px;
  background: rgba(104, 231, 255, 0.055);
  color: var(--muted);
  font-size: 13px;
}

.results-grid strong {
  display: block;
  margin-top: 3px;
  color: var(--ink);
  font-size: 17px;
}

.score-breakdown {
  margin-top: 8px;
  text-align: right;
}

.score-breakdown h2 {
  margin: 0 0 8px;
  color: var(--line-hot);
  font-size: 18px;
}

.score-breakdown ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.score-breakdown li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  color: var(--muted);
  font-size: 13px;
}

.score-breakdown strong {
  color: var(--green);
  white-space: nowrap;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 9px;
  margin: 14px 0 8px;
}

.result-actions .primary-button,
.result-actions .secondary-button {
  min-width: min(190px, 100%);
}

.leaderboard-filters {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 12px;
}

.leaderboard-filters label {
  display: grid;
  gap: 4px;
  color: #91a2ba;
  font-size: 12px;
  font-weight: 800;
}

.leaderboard-filters select {
  min-height: 38px;
  border: 1px solid rgba(37, 213, 255, 0.28);
  border-radius: 8px;
  background: rgba(3, 8, 24, 0.9);
  color: #f7fbff;
  font: inherit;
  font-weight: 800;
}

.leaderboard-list li.is-current-player {
  border-color: rgba(255, 216, 74, 0.68);
  background: rgba(255, 216, 74, 0.12);
}

html[data-game-state="mainMenu"] .hud,
html[data-game-state="results"] .hud,
html[data-game-state="leaderboard"] .hud {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

html[data-game-state="mainMenu"] .hud *,
html[data-game-state="results"] .hud *,
html[data-game-state="leaderboard"] .hud * {
  pointer-events: none !important;
}

@media (max-width: 820px) {
  .hud {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 6px;
  }

  .hud-group-main {
    gap: 4px;
  }

  .metric {
    min-width: 58px;
    padding: 5px 6px;
  }

  .metric strong {
    font-size: 13px;
  }

  .progress-wrap {
    grid-column: 1 / -1;
    grid-row: 2;
    margin-top: 0;
  }

  .difficulty-options,
  #start-screen .difficulty-options {
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  }

  .results-grid,
  .score-breakdown ul {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .mode-options {
    grid-template-columns: 1fr;
  }

  .difficulty-options,
  #start-screen .difficulty-options {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }

  .mode-options span,
  .difficulty-options span {
    min-height: 36px !important;
    font-size: 12px !important;
  }

  .results-panel {
    width: min(100%, calc(100vw - 18px));
    max-height: calc(100dvh - 18px);
    padding: 12px;
  }

  .results-panel .screen-stats {
    margin: 10px 0;
  }

  .leaderboard-filters {
    grid-template-columns: 1fr;
  }
}

@media (orientation: landscape) and (max-height: 520px) {
  .hud {
    inset:
      max(5px, env(safe-area-inset-top))
      max(7px, env(safe-area-inset-right))
      auto
      max(7px, env(safe-area-inset-left));
  }

  .metric {
    min-width: 52px;
    padding: 4px 5px;
  }

  .metric-label {
    font-size: 9px;
  }

  .icon-button {
    width: 30px;
    height: 30px;
  }
}

@media (max-width: 820px) {
  .hud {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "stats actions"
      "progress actions";
  }

  .hud-group-main {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .metric-mission {
    grid-column: 1 / -1;
  }

  .progress-wrap {
    grid-area: progress;
  }
}

@media (hover: none) and (max-width: 600px) and (orientation: portrait),
       (pointer: coarse) and (max-width: 600px) and (orientation: portrait) {
  html:not(.start-screen-open) .stage {
    inset: 0;
    width: 100vw !important;
    height: 100dvh !important;
    border-radius: 0;
  }

  html:not(.start-screen-open) #game-canvas {
    width: 100% !important;
    height: 100% !important;
  }

  html:not(.start-screen-open) .hud {
    inset:
      max(5px, env(safe-area-inset-top))
      max(5px, env(safe-area-inset-right))
      auto
      max(5px, env(safe-area-inset-left));
    width: calc(100vw - max(10px, env(safe-area-inset-left)) - max(10px, env(safe-area-inset-right)));
    height: auto;
    min-height: 68px;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "stats actions"
      "progress actions";
    gap: 3px 5px;
  }

  html:not(.start-screen-open) .metric-combo,
  html:not(.start-screen-open) .metric-mission {
    display: grid !important;
  }

  html:not(.start-screen-open) .hud-group-main {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 4px;
  }

  html:not(.start-screen-open) .metric {
    min-height: 32px;
    gap: 3px;
    padding: 3px 4px;
    border-radius: 10px;
  }

  html:not(.start-screen-open) .metric-icon {
    width: 16px;
    height: 16px;
    border-radius: 7px;
  }

  html:not(.start-screen-open) .metric-label {
    font-size: 8px;
  }

  html:not(.start-screen-open) .metric strong {
    font-size: clamp(10px, 2.7vw, 11px);
  }

  html:not(.start-screen-open) .metric-combo strong {
    font-size: 10px;
  }

  html:not(.start-screen-open) .metric-muted,
  html:not(.start-screen-open) .mission-progress {
    font-size: 9px;
  }

  html:not(.start-screen-open) .metric-mission {
    grid-column: 1 / -1;
    min-height: 24px;
  }

  html:not(.start-screen-open) .metric-mission .metric-label {
    display: none;
  }

  html:not(.start-screen-open) .metric-mission strong {
    font-size: 11px;
  }

  html:not(.start-screen-open) .hud-life-icons {
    gap: 1px;
  }

  html:not(.start-screen-open) .hud-life-icon {
    width: 12px;
    height: 12px;
  }

  html:not(.start-screen-open) .hud-actions {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  html:not(.start-screen-open) .hud-actions .icon-button {
    min-width: 44px;
    height: 34px;
    grid-template-columns: 1fr;
    gap: 1px;
    padding: 2px 4px;
    border-radius: 10px;
  }

  html:not(.start-screen-open) .hud-actions .icon-button .ui-icon {
    width: 16px;
    height: 16px;
    justify-self: center;
  }

  html:not(.start-screen-open) .hud-control-label {
    font-size: 8px;
  }

  html:not(.start-screen-open) .progress-wrap {
    grid-area: progress;
    height: 4px;
  }

  html:not(.start-screen-open) .metric[data-hud-feedback]::after {
    inset-block-start: 2px;
    inset-inline-end: 2px;
    padding: 1px 4px;
    font-size: 8px;
  }
}

@media (orientation: landscape) and (max-height: 520px) {
  html:not(.start-screen-open) .metric-combo,
  html:not(.start-screen-open) .metric-mission {
    display: grid !important;
  }

  .hud {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "stats actions"
      "progress actions";
    width: calc(100vw - 14px);
    gap: 4px 5px;
  }

  .hud-group-main {
    grid-template-columns: repeat(4, minmax(54px, max-content)) minmax(140px, 1fr);
    gap: 4px;
  }

  .metric {
    min-height: 34px;
    gap: 4px;
    padding: 4px 6px;
    border-radius: 10px;
  }

  .metric-icon {
    width: 18px;
    height: 18px;
  }

  .metric strong {
    font-size: 12px;
  }

  .metric-mission {
    grid-column: auto;
  }

  .mission-progress {
    font-size: 9px;
  }

  .hud-actions {
    grid-template-columns: repeat(2, minmax(40px, auto));
    gap: 4px;
  }

  .hud-actions .icon-button {
    min-width: 40px;
    height: 34px;
    padding: 0 5px;
  }

  .hud-control-label {
    display: none;
  }

  .progress-wrap {
    grid-area: progress;
    height: 5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hud-score-change,
  .hud-combo-milestone,
  .hud-life-loss,
  .hud-life-gain,
  .hud-mission-progress,
  .hud-mission-reset,
  .hud-mission-complete,
  .hud-progress-complete,
  .metric[data-hud-feedback]::after,
  .progress-wrap[data-hud-feedback]::after,
  .metric-lives.hud-life-loss::before {
    animation: none;
  }
}

/* Gameplay stays safely paused while the stage-overview camera is running. */
html.stage-intro-camera-active:not(.start-screen-open) #movement-joystick {
  opacity: 0.34;
  filter: grayscale(0.7) saturate(0.55);
  pointer-events: none !important;
  transition: opacity 220ms ease, filter 220ms ease;
}

html.stage-intro-camera-active:not(.start-screen-open) .stage {
  cursor: progress;
}

@media (max-width: 600px) and (orientation: portrait) {
  html:not(.start-screen-open) .hud {
    inset:
      max(6px, env(safe-area-inset-top))
      max(6px, env(safe-area-inset-right))
      auto
      max(6px, env(safe-area-inset-left));
    width: calc(100vw - max(12px, env(safe-area-inset-left)) - max(12px, env(safe-area-inset-right)));
    min-height: 0;
    gap: 3px 4px;
  }

  html:not(.start-screen-open) .hud-group-main {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-template-rows: auto auto;
    gap: 3px;
  }

  html:not(.start-screen-open) .metric {
    min-height: 32px;
    gap: 3px;
    padding: 3px 5px;
    border-radius: 10px;
  }

  html:not(.start-screen-open) .metric-icon {
    width: 16px;
    height: 16px;
    border-radius: 7px;
  }

  html:not(.start-screen-open) .metric-label {
    display: none;
  }

  html:not(.start-screen-open) .metric-progress .metric-label {
    display: block;
    font-size: 8px;
  }

  html:not(.start-screen-open) .metric strong {
    font-size: clamp(10px, 2.8vw, 12px);
  }

  html:not(.start-screen-open) .metric-mission {
    grid-column: 1 / -1;
    min-height: 22px;
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 2px 6px;
  }

  html:not(.start-screen-open) .metric-mission .metric-icon {
    display: none;
  }

  html:not(.start-screen-open) .metric-mission .metric-copy {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  html:not(.start-screen-open) .metric-mission strong {
    font-size: 10px;
  }

  html:not(.start-screen-open) .mission-progress {
    font-size: 9px;
  }

  html:not(.start-screen-open) .hud-actions {
    grid-template-columns: repeat(2, minmax(38px, 1fr));
    grid-auto-rows: 36px;
    gap: 3px;
    align-self: start;
  }

  html:not(.start-screen-open) .hud-actions .fullscreen-button {
    display: none;
  }

  html:not(.start-screen-open) .hud-actions .icon-button {
    min-width: 38px;
    width: 42px;
    height: 36px;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 2px;
    border-radius: 10px;
  }

  html:not(.start-screen-open) .hud-actions .icon-button .ui-icon {
    width: 17px;
    height: 17px;
    justify-self: center;
  }

  html:not(.start-screen-open) .hud-control-label {
    display: none;
  }

  html:not(.start-screen-open) .progress-wrap {
    height: 4px;
  }

  html.question-open #question-dialog {
    width: min(318px, calc(100vw - 34px));
  }

  html.question-open .dialog-inner {
    overflow: hidden;
    padding: 14px;
    border: 1px solid rgba(255, 216, 74, 0.36);
    border-radius: 22px 18px 22px 18px;
    background:
      radial-gradient(circle at 50% 0%, rgba(255, 216, 74, 0.22), transparent 34%),
      linear-gradient(180deg, rgba(11, 24, 45, 0.98), rgba(2, 7, 18, 0.98));
    box-shadow:
      0 22px 58px rgba(0, 0, 0, 0.68),
      0 0 0 3px rgba(255, 216, 74, 0.055),
      0 0 34px rgba(88, 232, 255, 0.16),
      inset 0 0 34px rgba(88, 232, 255, 0.075);
  }

  html.question-open .dialog-inner::before {
    inset: 8px;
    border-color: rgba(88, 232, 255, 0.18);
    border-radius: 16px 13px 16px 13px;
  }

  html.question-open .dialog-kicker,
  html.question-open .question-timer {
    min-height: 26px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 900;
  }

  html.question-open .dialog-kicker {
    border-color: rgba(88, 232, 255, 0.36);
    background: rgba(88, 232, 255, 0.12);
  }

  html.question-open .question-timer {
    background:
      linear-gradient(180deg, rgba(255, 216, 74, 0.18), rgba(255, 216, 74, 0.055)),
      rgba(4, 10, 24, 0.82);
  }

  html.question-open .dialog h1 {
    margin: 10px 0 14px;
    color: #ffe97b;
    font-family: var(--display-font);
    font-size: clamp(34px, 9.4vw, 43px);
    text-shadow:
      0 3px 0 rgba(0, 0, 0, 0.48),
      0 0 22px rgba(255, 216, 74, 0.34);
  }

  html.question-open #answer-form {
    gap: 8px;
    padding: 7px;
    border: 1px solid rgba(88, 232, 255, 0.22);
    border-radius: 16px;
    background: rgba(1, 5, 15, 0.58);
    box-shadow: inset 0 0 18px rgba(88, 232, 255, 0.06);
  }

  html.question-open #answer-input {
    height: 48px;
    min-height: 48px;
    border: 2px solid rgba(88, 232, 255, 0.42);
    border-radius: 13px;
    background: rgba(2, 9, 24, 0.94);
    color: #f7fbff;
    font-family: var(--display-font);
    font-size: 28px;
    font-weight: 900;
    text-align: center;
    box-shadow:
      inset 0 0 18px rgba(88, 232, 255, 0.08),
      0 0 18px rgba(88, 232, 255, 0.1);
  }

  html.question-open #submit-answer {
    height: 48px;
    min-height: 48px;
    border-radius: 13px;
    background: linear-gradient(180deg, #9cff6a, #42d16f);
    color: #041006;
    font-weight: 1000;
    box-shadow:
      0 5px 0 #218b43,
      0 12px 20px rgba(0, 0, 0, 0.3),
      inset 0 1px 0 rgba(255, 255, 255, 0.32);
  }

  html.question-open #question-feedback {
    min-height: 18px;
    margin-top: 7px;
    font-weight: 900;
  }
}

html.question-open #question-dialog.question-result-correct .dialog-inner {
  border-color: rgba(103, 240, 139, 0.78);
  animation: questionCorrectPop 520ms cubic-bezier(0.18, 0.9, 0.22, 1);
  box-shadow:
    0 22px 58px rgba(0, 0, 0, 0.68),
    0 0 0 3px rgba(103, 240, 139, 0.12),
    0 0 36px rgba(103, 240, 139, 0.28),
    inset 0 0 34px rgba(103, 240, 139, 0.12);
}

html.question-open #question-dialog.question-result-wrong .dialog-inner,
html.question-open #question-dialog.question-result-timeout .dialog-inner {
  border-color: rgba(255, 76, 95, 0.74);
  animation: questionWrongShake 440ms ease;
  box-shadow:
    0 22px 58px rgba(0, 0, 0, 0.68),
    0 0 0 3px rgba(255, 76, 95, 0.1),
    0 0 34px rgba(255, 76, 95, 0.24),
    inset 0 0 34px rgba(255, 76, 95, 0.1);
}

html.question-open #question-dialog[data-answer-result] #question-feedback {
  display: grid;
  justify-items: center;
  gap: 6px;
  padding: 12px 14px;
  border: 1px solid rgba(247, 251, 255, 0.12);
  border-radius: 18px;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.08), transparent 42%),
    rgba(3, 8, 19, 0.72);
  animation: questionFeedbackRise 420ms ease both;
  color: #f7fbff;
  direction: rtl;
  line-height: 1.16;
  text-align: center;
  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

html.question-open #question-feedback .question-feedback-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(180deg, #eaff9a, #49e676);
  color: #06210f;
  font-family: var(--display-font);
  font-size: 15px;
  font-weight: 1000;
  box-shadow:
    0 0 0 4px rgba(103, 240, 139, 0.16),
    0 0 24px rgba(103, 240, 139, 0.42),
    inset 0 2px 0 rgba(255, 255, 255, 0.56);
}

html.question-open #question-feedback .question-feedback-title {
  display: block;
  max-width: 100%;
  font-family: var(--display-font);
  font-weight: 1000;
  overflow-wrap: anywhere;
}

html.question-open #question-feedback .question-feedback-note {
  display: block;
  max-width: 100%;
  color: rgba(247, 251, 255, 0.86);
  font-family: var(--body-font);
  font-size: clamp(13px, 3.6vw, 16px);
  font-weight: 800;
}

html.question-open #question-feedback .question-feedback-answer-wrap {
  display: inline-grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  margin-top: 2px;
  padding: 7px 12px;
  border: 1px solid rgba(255, 216, 74, 0.44);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255, 216, 74, 0.16), rgba(255, 216, 74, 0.05)),
    rgba(2, 7, 18, 0.78);
  box-shadow:
    0 0 20px rgba(255, 216, 74, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

html.question-open #question-feedback .question-feedback-answer-label {
  color: #ffe9a0;
  font-family: var(--body-font);
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

html.question-open #question-feedback .question-feedback-answer {
  color: #ffffff;
  font-family: var(--display-font);
  font-size: clamp(26px, 7.2vw, 36px);
  font-weight: 1000;
  line-height: 0.95;
  text-shadow:
    0 2px 0 rgba(0, 0, 0, 0.54),
    0 0 18px rgba(255, 216, 74, 0.34);
}

html.question-open #question-dialog.question-result-correct #question-feedback {
  border-color: rgba(103, 240, 139, 0.46);
  background:
    radial-gradient(circle at 50% 0%, rgba(234, 255, 154, 0.22), transparent 46%),
    linear-gradient(180deg, rgba(20, 95, 56, 0.62), rgba(4, 19, 19, 0.78));
  box-shadow:
    0 14px 32px rgba(0, 0, 0, 0.3),
    0 0 34px rgba(103, 240, 139, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

html.question-open #question-dialog.question-result-correct #question-feedback .question-feedback-title {
  color: #f3ffbb;
  font-size: clamp(36px, 11vw, 56px);
  line-height: 0.95;
  text-shadow:
    0 4px 0 rgba(0, 0, 0, 0.5),
    0 0 26px rgba(103, 240, 139, 0.52),
    0 0 8px rgba(255, 255, 255, 0.18);
}

html.question-open #question-dialog.question-result-wrong #question-feedback,
html.question-open #question-dialog.question-result-timeout #question-feedback {
  border-color: rgba(255, 216, 74, 0.32);
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 216, 74, 0.18), transparent 44%),
    linear-gradient(180deg, rgba(62, 34, 54, 0.76), rgba(7, 11, 26, 0.82));
}

html.question-open #question-dialog.question-result-wrong #question-feedback .question-feedback-title,
html.question-open #question-dialog.question-result-timeout #question-feedback .question-feedback-title {
  color: #ffe3a5;
  font-size: clamp(21px, 6vw, 28px);
  line-height: 1.05;
  text-shadow:
    0 3px 0 rgba(0, 0, 0, 0.42),
    0 0 18px rgba(255, 216, 74, 0.2);
}

html.question-open #question-dialog.question-result-correct #question-title {
  color: #baff8e;
  text-shadow:
    0 3px 0 rgba(0, 0, 0, 0.48),
    0 0 24px rgba(103, 240, 139, 0.42);
}

html.question-open #question-dialog.question-result-wrong #question-title,
html.question-open #question-dialog.question-result-timeout #question-title {
  color: #ffb7c0;
  text-shadow:
    0 3px 0 rgba(0, 0, 0, 0.48),
    0 0 24px rgba(255, 76, 95, 0.38);
}

html.question-open #question-dialog.question-boss .dialog-inner {
  border-color: rgba(150, 104, 255, 0.76);
  background:
    radial-gradient(circle at 50% 0%, rgba(150, 104, 255, 0.28), transparent 38%),
    radial-gradient(circle at 50% 100%, rgba(88, 232, 255, 0.14), transparent 44%),
    linear-gradient(180deg, rgba(12, 13, 35, 0.98), rgba(3, 5, 17, 0.98));
  box-shadow:
    0 24px 66px rgba(0, 0, 0, 0.72),
    0 0 0 3px rgba(150, 104, 255, 0.12),
    0 0 42px rgba(150, 104, 255, 0.28),
    inset 0 0 38px rgba(88, 232, 255, 0.1);
}

html.question-open #question-dialog.question-boss .dialog-kicker {
  border-color: rgba(199, 166, 255, 0.56);
  background: rgba(150, 104, 255, 0.16);
  color: #eadcff;
}

html.question-open #question-dialog.question-boss #question-title {
  color: #ffe66d;
  text-shadow:
    0 3px 0 rgba(0, 0, 0, 0.54),
    0 0 26px rgba(150, 104, 255, 0.42),
    0 0 16px rgba(255, 230, 109, 0.24);
}

@keyframes questionCorrectPop {
  0% {
    transform: scale(1);
  }

  42% {
    transform: scale(1.035);
  }

  100% {
    transform: scale(1);
  }
}

@keyframes questionWrongShake {
  0%,
  100% {
    transform: translateX(0);
  }

  20% {
    transform: translateX(-7px);
  }

  42% {
    transform: translateX(6px);
  }

  64% {
    transform: translateX(-4px);
  }

  82% {
    transform: translateX(3px);
  }
}

@keyframes questionFeedbackRise {
  from {
    opacity: 0;
    transform: translateY(6px) scale(0.96);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (hover: none) and (max-width: 600px) and (orientation: portrait),
       (pointer: coarse) and (max-width: 600px) and (orientation: portrait) {
  html.question-open #question-dialog[data-answer-result] #question-feedback {
    gap: 5px;
    padding: 10px 11px;
    border-radius: 16px;
  }

  html.question-open #question-feedback .question-feedback-mark {
    width: 34px;
    height: 34px;
    font-size: 23px;
  }

  html.question-open #question-dialog.question-result-correct #question-feedback .question-feedback-title {
    font-size: clamp(32px, 10vw, 42px);
  }

  html.question-open #question-dialog.question-result-wrong #question-feedback .question-feedback-title,
  html.question-open #question-dialog.question-result-timeout #question-feedback .question-feedback-title {
    font-size: clamp(19px, 5.8vw, 24px);
  }

  html.question-open #question-feedback .question-feedback-note {
    font-size: 12px;
  }

  html.question-open #question-feedback .question-feedback-answer-wrap {
    grid-template-columns: 1fr;
    gap: 3px;
    width: min(100%, 210px);
    padding: 7px 10px;
    border-radius: 15px;
  }

  html.question-open #question-feedback .question-feedback-answer-label {
    white-space: normal;
  }

  html.question-open #question-feedback .question-feedback-answer {
    font-size: clamp(30px, 9vw, 38px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html.question-open #question-dialog.question-result-correct .dialog-inner,
  html.question-open #question-dialog.question-result-wrong .dialog-inner,
  html.question-open #question-dialog.question-result-timeout .dialog-inner,
  html.question-open #question-dialog[data-answer-result] #question-feedback {
    animation: none;
  }
}

@media (hover: none) and (max-width: 600px) and (orientation: portrait),
       (pointer: coarse) and (max-width: 600px) and (orientation: portrait) {
  html:not(.start-screen-open) .hud-actions .mobile-icon-button {
    color: #f7fbff;
  }

  html:not(.start-screen-open) .hud-actions .mobile-icon-button .ui-icon {
    color: #f7fbff;
    opacity: 1;
    filter: drop-shadow(0 0 10px rgba(104, 231, 255, 0.4));
  }

  html:not(.start-screen-open) .hud-actions .mobile-icon-button[data-mobile-state="off"] .ui-icon {
    color: #ffb7c0;
    filter: drop-shadow(0 0 10px rgba(255, 95, 159, 0.38));
  }

  html.touch-layout.control-joystick:not(.start-screen-open) #movement-joystick.mobile-joystick {
    position: fixed;
    inset-block-start: auto !important;
    inset-block-end: max(13px, env(safe-area-inset-bottom)) !important;
    inset-inline: 0 !important;
    top: auto !important;
    right: 0 !important;
    bottom: max(13px, env(safe-area-inset-bottom)) !important;
    left: 0 !important;
    z-index: 8;
    width: 100vw !important;
    height: clamp(118px, 26dvh, 158px) !important;
    display: grid !important;
    place-items: center;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: none;
  }

  html.touch-layout.control-joystick:not(.start-screen-open) #movement-joystick .joystick-base {
    position: relative;
    width: clamp(112px, 31vw, 132px);
    height: clamp(112px, 31vw, 132px);
    display: block !important;
    border: 2px solid rgba(104, 231, 255, 0.44);
    border-radius: 50%;
    background:
      radial-gradient(circle at 50% 50%, rgba(255, 216, 74, 0.16), transparent 28%),
      radial-gradient(circle at 50% 50%, rgba(104, 231, 255, 0.24), rgba(2, 7, 18, 0.76) 68%);
    box-shadow:
      0 18px 38px rgba(0, 0, 0, 0.42),
      0 0 0 7px rgba(104, 231, 255, 0.08),
      inset 0 0 30px rgba(104, 231, 255, 0.16);
    opacity: 0.96;
    pointer-events: auto;
    touch-action: none;
  }

  html.touch-layout.control-joystick:not(.start-screen-open) #movement-joystick .joystick-base::before,
  html.touch-layout.control-joystick:not(.start-screen-open) #movement-joystick .joystick-base::after {
    content: "";
    position: absolute;
    inset: 50% auto auto 50%;
    width: 70%;
    height: 2px;
    border-radius: 999px;
    background: rgba(247, 251, 255, 0.18);
    transform: translate(-50%, -50%);
    pointer-events: none;
  }

  html.touch-layout.control-joystick:not(.start-screen-open) #movement-joystick .joystick-base::after {
    width: 2px;
    height: 70%;
  }

  html.touch-layout.control-joystick:not(.start-screen-open) #movement-joystick.is-active .joystick-base {
    border-color: rgba(255, 216, 74, 0.78);
    box-shadow:
      0 18px 38px rgba(0, 0, 0, 0.42),
      0 0 0 9px rgba(255, 216, 74, 0.1),
      inset 0 0 34px rgba(255, 216, 74, 0.17);
  }

  html.touch-layout.control-joystick:not(.start-screen-open) #movement-joystick .joystick-knob {
    --knob-x: 0px;
    --knob-y: 0px;
    position: absolute;
    inset: 50% auto auto 50%;
    width: 46%;
    height: 46%;
    display: block !important;
    border: 2px solid rgba(255, 255, 255, 0.26);
    border-radius: 50%;
    background:
      radial-gradient(circle at 30% 24%, #fffbe4, #ffd84a 42%, #f09a00);
    box-shadow:
      0 8px 18px rgba(0, 0, 0, 0.42),
      0 0 24px rgba(255, 216, 74, 0.48);
    transform: translate(calc(-50% + var(--knob-x)), calc(-50% + var(--knob-y)));
    transition: transform 120ms ease;
    pointer-events: none;
  }

  html.question-open:not(.start-screen-open) #movement-joystick.mobile-joystick,
  html[data-game-state="paused"] #movement-joystick.mobile-joystick,
  html[data-game-state="results"] #movement-joystick.mobile-joystick {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none;
  }
}

html.touch-layout.control-joystick.question-open:not(.start-screen-open) #movement-joystick.mobile-joystick,
html.touch-layout.control-joystick[data-game-state="paused"]:not(.start-screen-open) #movement-joystick.mobile-joystick,
html.touch-layout.control-joystick[data-game-state="results"]:not(.start-screen-open) #movement-joystick.mobile-joystick,
html.question-open:not(.start-screen-open) #movement-joystick.mobile-joystick,
html[data-game-state="paused"] #movement-joystick.mobile-joystick,
html[data-game-state="results"] #movement-joystick.mobile-joystick {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

/* Keep the approved HUD compact before reserving its measured gameplay clearance. */
html:not(.start-screen-open) .metric-lives #lives.hud-life-icons {
  display: flex;
  flex-flow: row nowrap;
  align-items: center;
  justify-content: center;
  gap: 2px;
  white-space: nowrap;
}

html:not(.start-screen-open) .hud-actions {
  position: static;
  inset: auto;
  grid-template-columns: repeat(3, minmax(38px, auto));
  grid-template-rows: 44px;
  grid-auto-flow: column;
  grid-auto-rows: 44px;
  align-items: stretch;
  transform: none;
}

html:not(.start-screen-open) .hud-actions .mobile-icon-button,
html:not(.start-screen-open) .hud-actions .mobile-icon-button .ui-icon {
  color: #f7fbff;
  width: 18px;
  height: 18px;
}

html:not(.start-screen-open) .metric-mission,
html:not(.start-screen-open) .metric-mission .metric-copy,
html:not(.start-screen-open) .metric-mission strong {
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (min-width: 601px) {
  html:not(.start-screen-open) .hud {
    grid-template-rows: 44px 8px;
  }

  html:not(.start-screen-open) .hud-group-main {
    grid-template-rows: 44px;
  }
}

@media (max-width: 600px) and (orientation: portrait) {
  html:not(.start-screen-open) .hud {
    height: 65px;
    min-height: 65px;
    grid-template-rows: 62px 3px;
    gap: 0 4px;
  }

  html:not(.start-screen-open) .hud-group-main {
    height: 62px;
    grid-template-rows: 37px 22px;
    gap: 3px;
  }

  html:not(.start-screen-open) .hud-group-main > .metric:not(.metric-mission) {
    height: 37px;
    min-height: 37px;
  }

  html:not(.start-screen-open) .metric-mission {
    height: 22px;
    min-height: 22px;
  }

  html:not(.start-screen-open) .hud-actions {
    height: 44px;
    min-height: 44px;
    grid-template-columns: repeat(2, minmax(44px, 1fr));
    grid-template-rows: 44px;
    grid-auto-rows: 44px;
    align-self: start;
  }

  html:not(.start-screen-open) .hud-actions .icon-button {
    width: 100%;
    min-width: 44px;
    height: 44px;
    min-height: 44px;
  }
}

/* Keep the live maze below the measured HUD while preserving every approved metric. */
html:not(.start-screen-open) .stage {
  top: var(--gameplay-top-inset, 76px) !important;
  right: 0 !important;
  bottom: 0 !important;
  left: 0 !important;
  height: calc(var(--visual-viewport-height, 100dvh) - var(--gameplay-top-inset, 76px)) !important;
  min-height: 0 !important;
  max-height: none !important;
  align-self: stretch !important;
  justify-self: stretch !important;
}

/* Arcade collection progress: fixed slots make every pickup legible at a glance. */
.arcade-collection-hud {
  position: relative;
  min-width: 164px;
  min-height: 40px;
  display: grid;
  grid-template-columns: auto 1px auto;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 4px 8px;
  border: 1px solid rgba(104, 231, 255, 0.22);
  border-radius: 12px 9px 12px 9px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.022)),
    rgba(2, 6, 18, 0.78);
  box-shadow:
    0 10px 24px rgba(0, 0, 0, 0.28),
    inset 0 0 20px rgba(88, 232, 255, 0.045);
  direction: rtl;
  overflow: hidden;
  isolation: isolate;
}

.arcade-collection-hud::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(circle at 72% 50%, rgba(255, 216, 74, 0.13), transparent 42%);
  opacity: 0;
  transition: opacity 260ms ease;
}

.arcade-collection-hud.keys-complete::before {
  opacity: 1;
}

.arcade-key-track,
.arcade-word-track {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  white-space: nowrap;
}

.arcade-key-track {
  direction: rtl;
}

.arcade-collection-divider {
  width: 1px;
  height: 22px;
  border-radius: 999px;
  background: linear-gradient(180deg, transparent, rgba(148, 184, 215, 0.38), transparent);
}

.arcade-key-slot {
  position: relative;
  width: 20px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(151, 169, 191, 0.16);
  border-radius: 8px;
  background: rgba(112, 128, 151, 0.075);
  color: rgba(151, 169, 191, 0.38);
  filter: grayscale(1);
  transform: translateZ(0);
  transition:
    color 220ms ease,
    filter 220ms ease,
    border-color 220ms ease,
    background 220ms ease,
    box-shadow 220ms ease;
}

.arcade-key-slot .ui-icon {
  width: 14px;
  height: 14px;
  stroke-width: 2.25;
}

.arcade-key-slot.is-collected {
  border-color: rgba(255, 225, 112, 0.65);
  background:
    radial-gradient(circle at 50% 35%, rgba(255, 246, 184, 0.24), transparent 64%),
    rgba(255, 216, 74, 0.13);
  color: #ffd84a;
  filter: none;
  box-shadow:
    0 0 12px rgba(255, 216, 74, 0.42),
    inset 0 0 8px rgba(255, 245, 182, 0.14);
}

.arcade-key-slot.is-collected::after {
  content: "";
  position: absolute;
  inset: 2px;
  border-radius: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.4);
  pointer-events: none;
}

.arcade-letter-slot {
  width: 19px;
  height: 25px;
  display: grid;
  place-items: center;
  border-bottom: 1px solid rgba(151, 169, 191, 0.26);
  color: rgba(151, 169, 191, 0.36);
  font-family: var(--kf-font-display, "Fredoka", "Assistant", sans-serif);
  font-size: 17px;
  font-weight: 800;
  line-height: 1;
  text-shadow: none;
  filter: grayscale(1);
  transition:
    color 220ms ease,
    filter 220ms ease,
    border-color 220ms ease,
    text-shadow 220ms ease;
}

.arcade-letter-slot.is-collected {
  border-color: rgba(104, 231, 255, 0.78);
  color: #d9fbff;
  filter: none;
  text-shadow:
    0 0 5px rgba(255, 255, 255, 0.72),
    0 0 12px rgba(104, 231, 255, 0.75),
    0 0 22px rgba(104, 231, 255, 0.36);
}

.arcade-word-track.is-complete .arcade-letter-slot {
  color: #fff7c6;
  border-color: rgba(255, 216, 74, 0.76);
  text-shadow:
    0 0 5px rgba(255, 255, 255, 0.76),
    0 0 13px rgba(255, 216, 74, 0.68);
}

.arcade-key-slot.is-just-collected,
.arcade-letter-slot.is-just-collected {
  animation: arcade-collection-slot-pop 880ms cubic-bezier(0.18, 0.88, 0.22, 1) both;
}

.arcade-key-track.is-complete-pulse,
.arcade-word-track.is-complete-pulse {
  animation: arcade-collection-complete 820ms cubic-bezier(0.16, 0.86, 0.22, 1) both;
}

.arcade-collection-hud.is-all-keys-pulse {
  animation: arcade-collection-panel-complete 960ms cubic-bezier(0.16, 0.86, 0.22, 1) both;
}

@keyframes arcade-collection-slot-pop {
  0% { transform: scale(0.62) rotate(-8deg); opacity: 0.45; }
  38% { transform: scale(1.34) rotate(4deg); opacity: 1; }
  64% { transform: scale(0.94) rotate(-1deg); }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}

@keyframes arcade-collection-complete {
  0%, 100% { transform: scale(1); }
  46% { transform: scale(1.12); filter: brightness(1.32); }
}

@keyframes arcade-collection-panel-complete {
  0%, 100% { border-color: rgba(104, 231, 255, 0.22); }
  46% {
    border-color: rgba(255, 225, 112, 0.88);
    box-shadow: 0 0 26px rgba(255, 216, 74, 0.46), inset 0 0 18px rgba(255, 216, 74, 0.13);
  }
}

/* Three-key completion guidance. It is temporary and never changes the maze inset. */
.chest-ready-guidance {
  position: fixed;
  top: calc(var(--gameplay-top-inset, 76px) + 9px);
  left: 50%;
  z-index: 42;
  width: min(520px, calc(100vw - 22px));
  min-height: 72px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 13px;
  padding: 9px 15px;
  border: 1px solid rgba(255, 225, 112, 0.62);
  border-radius: 18px 13px 18px 13px;
  background:
    radial-gradient(circle at 18% 20%, rgba(104, 231, 255, 0.15), transparent 38%),
    linear-gradient(180deg, rgba(17, 28, 48, 0.97), rgba(3, 8, 20, 0.97));
  box-shadow:
    0 18px 48px rgba(0, 0, 0, 0.56),
    0 0 28px rgba(255, 216, 74, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.13);
  color: #f7fbff;
  direction: rtl;
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
  transform: translate(-50%, -15px) scale(0.96);
  transform-origin: 50% 0;
  transition:
    opacity 240ms ease,
    transform 340ms cubic-bezier(0.16, 0.86, 0.22, 1);
  isolation: isolate;
  backdrop-filter: blur(12px);
}

.chest-ready-guidance[hidden] {
  display: none !important;
}

.chest-ready-guidance.is-visible {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}

.chest-ready-guidance.is-leaving {
  opacity: 0;
  transform: translate(-50%, -8px) scale(0.985);
}

.chest-ready-sheen {
  position: absolute;
  inset: -60% auto -60% -28%;
  z-index: -1;
  width: 22%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.22), transparent);
  opacity: 0;
  transform: skewX(-18deg);
}

.chest-ready-guidance.is-visible .chest-ready-sheen {
  animation: chest-ready-sheen 1150ms 420ms ease-out both;
}

.chest-ready-formula {
  min-width: 158px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 5px 8px;
  border: 1px solid rgba(104, 231, 255, 0.2);
  border-radius: 12px;
  background: rgba(2, 7, 18, 0.55);
  direction: ltr;
}

.chest-ready-key,
.chest-ready-chest {
  display: grid;
  place-items: center;
  color: #ffd84a;
  filter: drop-shadow(0 0 7px rgba(255, 216, 74, 0.52));
  opacity: 0;
  transform: translateY(6px) scale(0.6);
}

.chest-ready-key .ui-icon {
  width: 19px;
  height: 19px;
  stroke-width: 2.2;
}

.chest-ready-chest {
  color: #68e7ff;
  filter: drop-shadow(0 0 9px rgba(104, 231, 255, 0.58));
}

.chest-ready-chest .ui-icon {
  width: 28px;
  height: 28px;
  stroke-width: 1.8;
}

.chest-ready-equals {
  color: rgba(247, 251, 255, 0.78);
  font-family: var(--kf-font-display, "Fredoka", sans-serif);
  font-size: 18px;
  font-weight: 800;
  opacity: 0;
}

.chest-ready-guidance.is-visible .chest-ready-key,
.chest-ready-guidance.is-visible .chest-ready-chest,
.chest-ready-guidance.is-visible .chest-ready-equals {
  animation: chest-ready-symbol 520ms cubic-bezier(0.18, 0.88, 0.22, 1) both;
}

.chest-ready-guidance.is-visible .chest-ready-key-one { animation-delay: 90ms; }
.chest-ready-guidance.is-visible .chest-ready-key-two { animation-delay: 180ms; }
.chest-ready-guidance.is-visible .chest-ready-key-three { animation-delay: 270ms; }
.chest-ready-guidance.is-visible .chest-ready-equals { animation-delay: 360ms; }
.chest-ready-guidance.is-visible .chest-ready-chest { animation-delay: 450ms; }

.chest-ready-copy {
  min-width: 0;
  display: grid;
  gap: 2px;
  text-align: start;
}

.chest-ready-copy strong {
  overflow: hidden;
  color: #fff7c6;
  font-family: var(--kf-font-display, "Fredoka", "Assistant", sans-serif);
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 800;
  line-height: 1.1;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-shadow: 0 0 14px rgba(255, 216, 74, 0.34);
}

.chest-ready-copy > span {
  color: #d7e7f7;
  font-size: clamp(12px, 1.5vw, 15px);
  font-weight: 800;
  line-height: 1.2;
}

@keyframes chest-ready-symbol {
  0% { opacity: 0; transform: translateY(7px) scale(0.58); }
  62% { opacity: 1; transform: translateY(-2px) scale(1.18); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes chest-ready-sheen {
  0% { left: -28%; opacity: 0; }
  22% { opacity: 0.65; }
  100% { left: 112%; opacity: 0; }
}

@media (min-width: 821px) {
  html:not(.start-screen-open) .hud-group-main {
    grid-template-columns:
      repeat(4, minmax(64px, max-content))
      minmax(190px, 1fr)
      minmax(164px, auto);
  }
}

@media (min-width: 601px) and (max-width: 820px) {
  html:not(.start-screen-open) .hud {
    grid-template-rows: 71px 6px;
  }

  html:not(.start-screen-open) .hud-group-main {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-template-rows: 44px 24px;
  }

  html:not(.start-screen-open) .metric-mission {
    grid-column: 1 / 3;
    grid-row: 2;
    min-height: 24px;
  }

  html:not(.start-screen-open) .arcade-collection-hud {
    grid-column: 3 / -1;
    grid-row: 2;
    min-width: 0;
    min-height: 24px;
    height: 24px;
    padding: 1px 6px;
  }
}

@media (max-width: 600px) and (orientation: portrait) {
  html:not(.start-screen-open) .metric-mission {
    grid-column: 1 / 3;
    grid-row: 2;
    height: 22px;
    min-height: 22px;
  }

  html:not(.start-screen-open) .arcade-collection-hud {
    grid-column: 3 / -1;
    grid-row: 2;
    min-width: 0;
    width: 100%;
    height: 22px;
    min-height: 22px;
    gap: 4px;
    padding: 1px 4px;
    border-radius: 8px;
  }

  html:not(.start-screen-open) .arcade-key-track,
  html:not(.start-screen-open) .arcade-word-track {
    gap: 1px;
  }

  html:not(.start-screen-open) .arcade-key-slot {
    width: 15px;
    height: 18px;
    border-radius: 6px;
  }

  html:not(.start-screen-open) .arcade-key-slot .ui-icon {
    width: 11px;
    height: 11px;
  }

  html:not(.start-screen-open) .arcade-letter-slot {
    width: 14px;
    height: 19px;
    font-size: 13px;
  }

  html:not(.start-screen-open) .arcade-collection-divider {
    height: 15px;
  }

  .chest-ready-guidance {
    top: calc(var(--gameplay-top-inset, 72px) + 7px);
    width: min(356px, calc(100vw - 18px));
    min-height: 64px;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 8px;
    padding: 7px 9px;
    border-radius: 15px 11px 15px 11px;
  }

  .chest-ready-formula {
    min-width: 118px;
    height: 40px;
    gap: 3px;
    padding: 4px 6px;
  }

  .chest-ready-key .ui-icon {
    width: 15px;
    height: 15px;
  }

  .chest-ready-chest .ui-icon {
    width: 23px;
    height: 23px;
  }

  .chest-ready-copy strong {
    font-size: 15px;
  }

  .chest-ready-copy > span {
    font-size: 11px;
  }
}

@media (orientation: landscape) and (max-height: 520px) {
  html:not(.start-screen-open) .hud-group-main {
    grid-template-columns:
      repeat(4, minmax(50px, max-content))
      minmax(132px, 1fr)
      minmax(140px, auto);
    grid-template-rows: 34px;
  }

  html:not(.start-screen-open) .metric-mission,
  html:not(.start-screen-open) .arcade-collection-hud {
    grid-column: auto;
    min-height: 34px;
    height: 34px;
  }

  .chest-ready-guidance {
    min-height: 58px;
    padding-block: 6px;
  }

  .chest-ready-formula {
    height: 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .arcade-key-slot.is-just-collected,
  .arcade-letter-slot.is-just-collected,
  .arcade-key-track.is-complete-pulse,
  .arcade-word-track.is-complete-pulse,
  .arcade-collection-hud.is-all-keys-pulse,
  .chest-ready-guidance.is-visible .chest-ready-sheen,
  .chest-ready-guidance.is-visible .chest-ready-key,
  .chest-ready-guidance.is-visible .chest-ready-chest,
  .chest-ready-guidance.is-visible .chest-ready-equals {
    animation: none;
  }

  .chest-ready-guidance,
  .arcade-key-slot,
  .arcade-letter-slot {
    transition: none;
  }

  .chest-ready-guidance.is-visible .chest-ready-key,
  .chest-ready-guidance.is-visible .chest-ready-chest,
  .chest-ready-guidance.is-visible .chest-ready-equals {
    opacity: 1;
    transform: none;
  }
}