/* Load tokens.css first. CSS supplies appearance; semantics and behavior stay in HTML/JS. */
.ls-app {
  color: var(--ls-color-ink);
  background: var(--ls-color-paper);
  font: 600 var(--ls-text-body) / var(--ls-leading-body) var(--ls-font-body);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-text-size-adjust: 100%;
}

.ls-app *, .ls-app *::before, .ls-app *::after { box-sizing: border-box; }
.ls-app img, .ls-app svg { max-width: 100%; }
.ls-app img { height: auto; }
.ls-app :where(button, input, select) { font: inherit; }
.ls-app a { color: var(--ls-color-action); text-underline-offset: 0.18em; }
.ls-app [hidden] { display: none !important; }

.ls-shell {
  width: min(100%, var(--ls-content-max));
  margin-inline: auto;
  padding: max(var(--ls-space-4), env(safe-area-inset-top))
    max(var(--ls-space-4), env(safe-area-inset-right))
    max(var(--ls-space-6), env(safe-area-inset-bottom))
    max(var(--ls-space-4), env(safe-area-inset-left));
}

.ls-topbar { display: flex; align-items: center; flex-wrap: wrap; gap: var(--ls-touch-gap); justify-content: space-between; }
.ls-actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--ls-touch-gap); }
.ls-title { margin: 0; font: 700 var(--ls-text-title) / var(--ls-leading-heading) var(--ls-font-display); }
.ls-copy { max-width: var(--ls-reading-max); }
.ls-game-layout { display: grid; gap: var(--ls-space-5); max-width: var(--ls-game-max); margin-inline: auto; }

.ls-button, .ls-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ls-space-3);
  min-width: var(--ls-touch-min);
  min-height: var(--ls-touch-min);
  padding: var(--ls-space-3) var(--ls-space-5);
  border: var(--ls-stroke-ui) solid var(--ls-color-ink);
  border-radius: var(--ls-radius-control);
  color: var(--ls-color-paper);
  background: var(--ls-color-action);
  box-shadow: var(--ls-shadow-button);
  font: 800 var(--ls-text-label) / 1.25 var(--ls-font-body);
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: transform var(--ls-motion-press) var(--ls-ease), box-shadow var(--ls-motion-press) var(--ls-ease);
}

.ls-app a.ls-button, .ls-app a.ls-icon-button { color: var(--ls-color-paper); text-decoration: none; }
.ls-button--secondary, .ls-icon-button {
  color: var(--ls-color-ink);
  background: var(--ls-color-sun-soft);
}
.ls-app a.ls-button--secondary, .ls-app a.ls-icon-button { color: var(--ls-color-ink); }
.ls-button--quiet { color: var(--ls-color-ink); background: var(--ls-color-paper); box-shadow: none; }
.ls-app a.ls-button--quiet { color: var(--ls-color-ink); }
.ls-icon-button { padding: var(--ls-space-3); flex-shrink: 0; }
.ls-button > :is(img, svg), .ls-icon-button > :is(img, svg) { width: 32px; height: 32px; flex-shrink: 0; }
.ls-button:not(:disabled):not([aria-disabled="true"]):active,
.ls-icon-button:not(:disabled):not([aria-disabled="true"]):active { transform: translateY(3px); box-shadow: 0 1px 0 var(--ls-color-ink); }
.ls-button:disabled, .ls-button[aria-disabled="true"],
.ls-icon-button:disabled, .ls-icon-button[aria-disabled="true"] { box-shadow: none; opacity: 0.55; cursor: default; }

.ls-app :where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: var(--ls-stroke-focus) solid var(--ls-color-navy);
  outline-offset: 5px;
  box-shadow: 0 0 0 5px var(--ls-color-paper);
}

.ls-card {
  min-width: 0;
  padding: var(--ls-space-5);
  border: var(--ls-stroke-ui) solid var(--ls-color-ink);
  border-radius: var(--ls-radius-card);
  background: var(--ls-color-white);
  box-shadow: var(--ls-shadow-card);
}

.ls-board {
  min-width: 0;
  padding: clamp(16px, 3vw, 32px);
  border: var(--ls-stroke-ui) solid var(--ls-color-ink);
  border-radius: var(--ls-radius-board);
  background: var(--ls-color-white);
}

.ls-prompt {
  display: flex;
  gap: var(--ls-space-4);
  align-items: center;
  margin: 0;
  font: 800 var(--ls-text-prompt) / var(--ls-leading-reading) var(--ls-font-body);
}
.ls-prompt__text { margin: 0; min-width: 0; }
.ls-choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: max(var(--ls-touch-gap), var(--ls-space-4)); }
.ls-choice {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--ls-space-3);
  min-width: var(--ls-touch-min);
  min-height: 144px;
  padding: var(--ls-space-4);
  color: var(--ls-color-ink);
  background: var(--ls-color-paper);
  border: 3px solid var(--ls-color-ink);
  border-radius: var(--ls-radius-card);
  font: 800 var(--ls-text-label) / 1.3 var(--ls-font-reading);
  text-align: center;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color var(--ls-motion-feedback), transform var(--ls-motion-press) var(--ls-ease);
}
.ls-choice > img { width: clamp(64px, 12vw, 144px); height: clamp(64px, 12vw, 144px); object-fit: contain; }
.ls-choice[aria-pressed="true"], .ls-choice[data-state="selected"] { background: var(--ls-color-sky-soft); border-style: double; border-width: 6px; padding: 13px; }
.ls-choice[data-state="correct"] { background: var(--ls-color-mint-soft); border-style: solid; }
.ls-choice[data-state="retry"] { background: var(--ls-color-sun-soft); border-style: dashed; }
.ls-choice:disabled, .ls-choice[aria-disabled="true"] { cursor: default; }
.ls-choice__status { font-size: var(--ls-text-caption); font-weight: 800; }
.ls-choice__mark { display: grid; place-items: center; width: 32px; height: 32px; border: 2px solid currentColor; border-radius: 50%; }
.ls-grapheme { font: 700 var(--ls-text-grapheme) / var(--ls-leading-reading) var(--ls-font-reading); letter-spacing: normal; font-variant-ligatures: none; }

.ls-progress { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: var(--ls-space-3); margin: 0; padding: 0; list-style: none; }
.ls-progress__dot { display: grid; place-items: center; width: 24px; height: 24px; color: var(--ls-color-paper); background: var(--ls-color-paper); border: 2px solid var(--ls-color-ink); border-radius: 50%; font-size: 1rem; line-height: 1; }
.ls-progress__dot[data-state="complete"] { background: var(--ls-color-action); }
.ls-progress__dot[aria-current="step"] { background: var(--ls-color-sun); border-width: 4px; outline: 2px solid var(--ls-color-ink); outline-offset: 3px; }
.ls-feedback { display: flex; gap: var(--ls-space-3); align-items: center; padding: var(--ls-space-4); background: var(--ls-color-sun-soft); border: 2px solid var(--ls-color-ink); border-radius: var(--ls-radius-control); }
.ls-feedback[data-state="correct"] { background: var(--ls-color-mint-soft); }
.ls-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (min-width: 768px) {
  .ls-shell { padding: var(--ls-space-6) max(var(--ls-space-6), env(safe-area-inset-right)) var(--ls-space-7) max(var(--ls-space-6), env(safe-area-inset-left)); }
  .ls-game-layout--companion { grid-template-columns: minmax(0, 1fr) 220px; align-items: center; }
  .ls-choice-grid--four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 479px) {
  .ls-card { padding: var(--ls-space-4); }
  .ls-board { border-radius: var(--ls-radius-card); }
  .ls-prompt { gap: var(--ls-space-3); }
  .ls-choice { min-height: 128px; padding: var(--ls-space-3); }
  .ls-choice[aria-pressed="true"], .ls-choice[data-state="selected"] { padding: 9px; }
}
@media (hover: hover) and (pointer: fine) {
  .ls-button:not(:disabled):not([aria-disabled="true"]):hover,
  .ls-icon-button:not(:disabled):not([aria-disabled="true"]):hover,
  .ls-choice:not(:disabled):not([aria-disabled="true"]):hover { transform: translateY(-2px); }
}
@media (prefers-reduced-motion: reduce) {
  .ls-app *, .ls-app *::before, .ls-app *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .ls-button, .ls-icon-button, .ls-choice { transform: none !important; }
}
@media (forced-colors: active) {
  .ls-button, .ls-icon-button, .ls-choice, .ls-card, .ls-board { border-color: ButtonText; box-shadow: none; }
  .ls-app :where(a, button, input, select, textarea, [tabindex]):focus-visible { outline-color: Highlight; }
  .ls-choice[aria-pressed="true"] { outline: 3px solid Highlight; outline-offset: 2px; }
}