:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  color: #203438;
  background: #e8e3d7;
  --paper: #fbf8ef;
  --paper-strong: #fffdf7;
  --ink: #203438;
  --muted: #5e6d6f;
  --line: #aeb9b4;
  --line-strong: #566b6d;
  --sun: #b84d2d;
  --measure: #166a73;
  --logic: #58468f;
  --gold: #a66f0a;
  --focus: #0a67a3;
  --shadow: 0 12px 36px rgb(34 51 51 / 10%);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 14% 8%, rgb(255 248 217 / 72%), transparent 30rem),
    linear-gradient(145deg, #ece8dc 0%, #d9e3df 100%);
}

button,
select,
input {
  font: inherit;
}

button,
select,
input[type="range"] {
  min-height: 44px;
}

button,
select {
  color: var(--ink);
}

button {
  border: 1px solid var(--line-strong);
  border-radius: 0.72rem;
  background: var(--paper-strong);
  cursor: pointer;
  padding: 0.68rem 0.9rem;
  font-weight: 700;
  transition: border-color 120ms ease, background-color 120ms ease, transform 120ms ease;
}

button:hover {
  background: #f3eee0;
}

button:active {
  transform: translateY(1px);
}

button:focus-visible,
select:focus-visible,
input:focus-visible,
summary:focus-visible,
canvas:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

select {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 0.62rem;
  background: #fff;
  padding: 0.65rem 2.2rem 0.65rem 0.75rem;
}

label {
  display: grid;
  gap: 0.42rem;
  font-weight: 750;
}

small {
  color: var(--muted);
  font-weight: 540;
}

kbd {
  display: inline-block;
  min-width: 1.45rem;
  padding: 0.08rem 0.3rem;
  border: 1px solid #879796;
  border-bottom-width: 2px;
  border-radius: 0.3rem;
  background: #f5f1e7;
  font-family: inherit;
  font-size: 0.75em;
  text-align: center;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.5rem;
  left: 0.5rem;
  transform: translateY(-150%);
  border-radius: 0.5rem;
  background: #fff;
  color: #123d5a;
  padding: 0.8rem 1rem;
  font-weight: 800;
}

.skip-link:focus {
  transform: translateY(0);
}

.app-shell {
  width: min(1480px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.1rem 0 2.5rem;
}

.app-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding: 0.7rem 0.25rem 1rem;
}

.app-header h1,
.panel h2,
.panel p {
  margin-top: 0;
}

.app-header h1 {
  margin: 0.05rem 0 0;
  font-size: clamp(1.35rem, 2.6vw, 2.25rem);
  letter-spacing: -0.035em;
}

.eyebrow,
.section-kicker,
.status-label {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0;
}

.prototype-note {
  margin: 0;
  color: #405355;
  font-size: 0.86rem;
  font-weight: 680;
  text-align: right;
}

.studio-link {
  color: inherit;
  font-weight: 800;
  text-underline-offset: 0.22em;
}

.panel {
  border: 1px solid rgb(81 103 103 / 55%);
  border-radius: 1rem;
  background: rgb(251 248 239 / 96%);
  box-shadow: var(--shadow);
}

.setup-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(290px, 0.75fr);
  gap: clamp(2rem, 7vw, 7rem);
  min-height: 62vh;
  align-items: center;
  padding: clamp(1.5rem, 5vw, 4.5rem);
}

.setup-copy h2 {
  max-width: 16ch;
  margin-bottom: 1.1rem;
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 0.97;
  letter-spacing: -0.055em;
}

.setup-copy > p:not(.section-kicker) {
  max-width: 62ch;
  color: #405254;
  font-size: 1.05rem;
  line-height: 1.65;
}

.plain-list {
  display: grid;
  gap: 0.7rem;
  padding: 0;
  list-style: none;
  font-weight: 690;
}

.plain-list span {
  display: inline-grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  margin-right: 0.55rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
}

.setup-form {
  display: grid;
  gap: 1rem;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: #f2eee3;
}

.check-row {
  display: grid;
  grid-template-columns: 1.4rem 1fr;
  gap: 0.65rem;
  align-items: start;
  cursor: pointer;
}

.check-row input {
  width: 1.25rem;
  height: 1.25rem;
  margin: 0.12rem 0 0;
  accent-color: var(--focus);
}

.check-row span {
  display: grid;
  gap: 0.1rem;
}

.check-row.compact {
  grid-template-columns: 1.4rem 1fr;
}

.primary-button {
  border-color: #183e42;
  background: #244b4f;
  color: #fff;
}

.primary-button:hover {
  background: #173a3e;
}

.privacy-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.game-panel {
  display: grid;
  gap: 0.9rem;
}

.round-strip {
  display: grid;
  grid-template-columns: minmax(230px, 1fr) auto auto auto;
  gap: 1.2rem;
  align-items: center;
  padding: 0.8rem 1rem;
}

.round-strip > div:not(.round-buttons) {
  display: grid;
  gap: 0.15rem;
}

.round-buttons {
  display: flex;
  gap: 0.5rem;
}

.play-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(270px, 335px);
  gap: 0.9rem;
  align-items: start;
}

.stage-card {
  overflow: hidden;
}

.arena-frame {
  position: relative;
  min-height: 570px;
  overflow: hidden;
  border-radius: 0.95rem 0.95rem 0 0;
  background: #f7f1e5;
}

#arena-canvas {
  display: block;
  width: 100%;
  height: 570px;
  touch-action: none;
}

.canvas-legend {
  position: absolute;
  top: 0.8rem;
  left: 0.8rem;
  display: flex;
  gap: 0.4rem;
}

.canvas-legend span,
.focus-badge {
  border: 1px solid rgb(62 82 83 / 70%);
  border-radius: 999px;
  background: rgb(255 253 247 / 90%);
  color: #304547;
  padding: 0.38rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 760;
  backdrop-filter: blur(5px);
}

.focus-badge {
  position: absolute;
  right: 0.8rem;
  bottom: 0.8rem;
  border-color: #8d6821;
  color: #5d420d;
}

.primary-controls {
  display: grid;
  grid-template-columns: auto minmax(180px, 320px);
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem;
  border-top: 1px solid var(--line);
  background: #f0ece1;
}

.move-pad {
  display: grid;
  grid-template-columns: repeat(3, 54px);
  grid-template-rows: repeat(2, 48px);
  gap: 0.35rem;
}

.move-button {
  min-width: 54px;
  min-height: 48px;
  padding: 0;
  touch-action: none;
}

.move-button.forward { grid-column: 2; grid-row: 1; }
.move-button.left { grid-column: 1; grid-row: 2; }
.move-button.brake { grid-column: 2; grid-row: 2; }
.move-button.right { grid-column: 3; grid-row: 2; }

.move-button.is-held {
  border-color: #173d42;
  background: #d6e9e6;
}

.deploy-button {
  min-height: 58px;
  border-color: #7a5310;
  background: #f4dfaa;
  color: #483005;
}

.hud-stack {
  display: grid;
  gap: 0.9rem;
}

.compact-panel {
  padding: 0.9rem;
}

.compact-panel h2 {
  margin-bottom: 0.75rem;
  font-size: 1rem;
}

.panel-heading-row {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  align-items: center;
}

.panel-heading-row > span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 720;
}

.fragment-pill {
  border: 1px solid #9d833f;
  border-radius: 999px;
  background: #fff5cf;
  color: #5a430d !important;
  padding: 0.28rem 0.52rem;
}

.charge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.45rem;
  margin: 0;
}

.charge-grid > div {
  display: grid;
  gap: 0.25rem;
  border: 1px solid var(--line);
  border-top-width: 4px;
  border-radius: 0.65rem;
  background: #fff;
  padding: 0.52rem;
}

.charge-grid dt {
  font-size: 0.7rem;
  font-weight: 760;
}

.charge-grid dd {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 900;
}

.charge-pattern { border-top-color: var(--sun) !important; }
.charge-measure { border-top-color: var(--measure) !important; }
.charge-logic { border-top-color: var(--logic) !important; }

.action-buttons {
  display: grid;
  gap: 0.42rem;
}

.action-buttons button {
  display: grid;
  grid-template-columns: 2.1rem 1fr auto;
  gap: 0.45rem;
  align-items: center;
  width: 100%;
  text-align: left;
}

.action-buttons button[aria-pressed="true"] {
  border-color: #24595e;
  box-shadow: inset 0 0 0 2px #73a3a2;
  background: #e3f0ec;
}

.action-glyph {
  font-size: 1.35rem;
  text-align: center;
}

.field-order {
  display: grid;
  gap: 0.42rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.field-order li {
  display: grid;
  grid-template-columns: 1.4rem 1fr auto;
  gap: 0.45rem;
  align-items: center;
  font-size: 0.8rem;
}

.field-order .field-track {
  height: 0.45rem;
  overflow: hidden;
  border-radius: 999px;
  background: #d6d9d2;
}

.field-order .field-fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: #386d71;
}

.field-order .field-detail {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.settings-panel {
  padding: 0;
  overflow: hidden;
}

.settings-panel summary {
  cursor: pointer;
  padding: 0.9rem;
  font-size: 0.9rem;
  font-weight: 800;
}

.settings-grid {
  display: grid;
  gap: 0.9rem;
  padding: 0 0.9rem 1rem;
  border-top: 1px solid var(--line);
}

.settings-grid > :first-child {
  margin-top: 0.9rem;
}

.question-panel {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr);
  gap: 1rem;
  align-items: center;
  border-width: 2px;
  border-color: #566f71;
  padding: 1rem;
}

.question-copy h2 {
  margin-bottom: 0.35rem;
  font-size: 1.15rem;
}

#question-prompt {
  margin-bottom: 0.5rem;
  font-size: 1.08rem;
  font-weight: 760;
  line-height: 1.4;
}

.route-note {
  margin-bottom: 0 !important;
  color: var(--muted);
  font-size: 0.82rem;
}

.answer-buttons {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}

.answer-buttons button {
  display: grid;
  min-height: 72px;
  gap: 0.3rem;
  align-content: center;
  border-width: 2px;
  text-align: left;
}

.answer-buttons button[aria-pressed="true"] {
  border-color: var(--focus);
  background: #ddecf3;
}

.answer-gate-label {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 820;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.question-move-dock {
  display: none;
}

.learning-note,
.pause-panel,
.summary-panel {
  padding: 1rem;
}

.learning-note {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  border-left: 6px solid #376f74;
}

.learning-note p {
  margin: 0.25rem 0 0;
  line-height: 1.5;
}

.pause-panel {
  border-width: 2px;
  border-color: #756132;
  background: #fff7dd;
}

.summary-panel {
  border-width: 2px;
  border-color: #356b60;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 1rem 0;
}

.summary-stat {
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: #fff;
  padding: 0.75rem;
}

.summary-stat span,
.summary-stat strong {
  display: block;
}

.summary-stat span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 720;
}

.summary-stat strong {
  margin-top: 0.25rem;
  font-size: 1.35rem;
}

.review-list {
  margin: 0.7rem 0 1rem;
}

.review-list ul {
  margin-bottom: 0;
}

.summary-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
}

@media (max-width: 1050px) {
  .play-layout {
    grid-template-columns: 1fr;
  }

  .hud-stack {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .settings-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .app-shell {
    width: min(100% - 1rem, 1480px);
    padding-top: 0.5rem;
  }

  .app-header {
    display: block;
  }

  .prototype-note {
    margin-top: 0.45rem;
    text-align: left;
  }

  .setup-panel {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 1.2rem;
  }

  .setup-copy h2 {
    font-size: clamp(2rem, 12vw, 3.3rem);
  }

  .round-strip {
    grid-template-columns: 1fr 1fr;
  }

  .round-strip > :first-child,
  .round-buttons {
    grid-column: 1 / -1;
  }

  .round-buttons button {
    flex: 1;
  }

  .arena-frame,
  #arena-canvas {
    min-height: 420px;
    height: 420px;
  }

  .primary-controls {
    grid-template-columns: auto 1fr;
  }

  .hud-stack {
    grid-template-columns: 1fr;
  }

  .settings-panel {
    grid-column: auto;
  }

  .question-panel {
    grid-template-columns: 1fr;
  }

  .answer-buttons {
    grid-template-columns: 1fr;
  }

  .question-panel:not([hidden]) {
    margin-bottom: calc(4.8rem + env(safe-area-inset-bottom, 0px));
  }

  .question-move-dock {
    position: fixed;
    z-index: 30;
    right: 0.5rem;
    bottom: max(0.5rem, env(safe-area-inset-bottom, 0px));
    left: 0.5rem;
    display: flex;
    gap: 0.55rem;
    align-items: center;
    justify-content: space-between;
    padding: 0.4rem;
    border: 2px solid #566f71;
    border-radius: 0.8rem;
    background: rgb(255 253 247 / 97%);
    box-shadow: 0 0.45rem 1.2rem rgb(30 48 50 / 24%);
  }

  .question-move-label {
    padding-left: 0.35rem;
    color: #304547;
    font-size: 0.78rem;
    white-space: nowrap;
  }

  .question-move-buttons {
    display: grid;
    flex: 1;
    grid-template-columns: repeat(4, minmax(44px, 1fr));
    gap: 0.35rem;
    max-width: 270px;
  }

  .question-move-buttons .move-button {
    min-width: 44px;
    min-height: 48px;
  }

  .summary-grid {
    grid-template-columns: 1fr 1fr;
  }
}

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

  .round-strip > :first-child,
  .round-buttons {
    grid-column: auto;
  }

  .primary-controls {
    grid-template-columns: 1fr;
  }

  .move-pad {
    justify-self: center;
  }

  .charge-grid {
    grid-template-columns: 1fr;
  }

  .learning-note {
    align-items: stretch;
    flex-direction: column;
  }

  .question-move-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }

  .question-move-buttons {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}