/* components.css — one block per Figma component (Design System → Components).
   Sizes come from the Figma variants; phone sizes are set via the --c-* vars
   at the bottom of each block so the markup never changes. */

/* ============================================================
   Chunky edge — every interactive element in this app has one.
   6px bottom border in the darker "edge" colour; pressing sinks it.
   ============================================================ */

.edge {
  border-style: solid;
  border-width: 0 0 var(--size-edge) 0;
  transition: transform var(--motion-press) var(--ease-out),
              border-bottom-width var(--motion-press) var(--ease-out);
}

.edge:active:not(:disabled):not([aria-disabled="true"]) {
  transform: translateY(4px);
  border-bottom-width: 2px;
}

/* ============================================================
   Icon
   ============================================================ */

.icon { display: inline-flex; flex: none; color: currentColor; }
.icon > svg { width: 100%; height: 100%; }

/* ============================================================
   Button — 88px tall, icon + short label. Icon carries the meaning.
   ============================================================ */

.btn {
  --btn-bg: var(--color-action-primary);
  --btn-edge: var(--color-action-primary-edge);
  --btn-text: var(--color-text-on-accent);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  height: var(--size-tap-lg);
  min-width: 160px;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  background: var(--btn-bg);
  border-color: var(--btn-edge);
  color: var(--btn-text);
  font-size: var(--type-button);
  font-weight: 800;
  line-height: 1.17;
  white-space: nowrap;
}

.btn .icon { width: 32px; height: 32px; }

.btn--primary   { --btn-bg: var(--color-action-primary);      --btn-edge: var(--color-action-primary-edge); }
.btn--audio     { --btn-bg: var(--color-action-audio);        --btn-edge: var(--color-action-audio-edge); }
.btn--correct   { --btn-bg: var(--color-feedback-correct);    --btn-edge: var(--color-feedback-correct-edge); }
.btn--try-again { --btn-bg: var(--color-feedback-try-again);  --btn-edge: var(--color-feedback-try-again-edge);
                  --btn-text: var(--color-text-primary); }

.btn--secondary {
  --btn-bg: var(--color-bg-surface);
  --btn-edge: var(--color-border-default);
  --btn-text: var(--color-text-primary);
  border-width: 3px 3px var(--size-edge) 3px;
}

.btn:disabled, .btn[aria-disabled="true"] {
  --btn-bg: var(--color-state-locked-soft);
  --btn-edge: var(--color-border-default);
  --btn-text: var(--color-text-disabled);
  border-width: 3px 3px var(--size-edge) 3px;
  cursor: default;
}

/* ============================================================
   Round Button — icon only. L = the big replay speaker. M = back/home.
   ============================================================ */

.round-btn {
  --rb-bg: var(--color-action-audio);
  --rb-edge: var(--color-action-audio-edge);
  --rb-fg: var(--color-icon-on-accent);
  --rb-size: var(--size-tap-min);
  --rb-icon: 32px;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--rb-size);
  height: var(--rb-size);
  border-radius: var(--radius-full);
  background: var(--rb-bg);
  border-color: var(--rb-edge);
  color: var(--rb-fg);
  flex: none;
}

.round-btn .icon { width: var(--rb-icon); height: var(--rb-icon); }

.round-btn--l { --rb-size: 112px; --rb-icon: 56px; }
.round-btn--m { --rb-size: var(--size-tap-min); --rb-icon: 32px; }

.round-btn--audio     { --rb-bg: var(--color-action-audio);   --rb-edge: var(--color-action-audio-edge); }
.round-btn--primary   { --rb-bg: var(--color-action-primary); --rb-edge: var(--color-action-primary-edge); }
.round-btn--secondary {
  --rb-bg: var(--color-bg-surface);
  --rb-edge: var(--color-border-default);
  --rb-fg: var(--color-icon-default);
  border-width: 3px 3px var(--size-edge) 3px;
}

/* ============================================================
   Character Card — one Chinese word. Try again is warm yellow, never red.
   ============================================================ */

.char-card {
  --cc-w: 240px;
  --cc-h: 260px;
  --cc-radius: var(--radius-lg);
  --cc-type: var(--type-char-l);

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: var(--cc-w);
  height: var(--cc-h);
  border-radius: var(--cc-radius);
  background: var(--color-bg-surface);
  border-color: var(--color-border-default);
  border-width: 3px 3px var(--size-edge) 3px;
  color: var(--color-text-primary);
  font-family: var(--font-hanzi);
  font-weight: 500;
  font-size: var(--cc-type);
  line-height: 1.16;
}

.char-card--m {
  --cc-w: 144px;
  --cc-h: 160px;
  --cc-radius: var(--radius-md);
  --cc-type: var(--type-char-m);
}

.char-card--xl { --cc-w: 380px; --cc-h: 400px; --cc-type: var(--type-char-xl); }

.char-card.is-selected {
  background: var(--color-action-audio-soft);
  border-color: var(--color-border-selected);
  border-width: 4px 4px var(--size-edge) 4px;
}
.char-card.is-correct {
  background: var(--color-feedback-correct-soft);
  border-color: var(--color-feedback-correct);
  border-width: 4px 4px var(--size-edge) 4px;
}
.char-card.is-try-again {
  background: var(--color-feedback-try-again-soft);
  border-color: var(--color-feedback-try-again);
  border-width: 4px 4px var(--size-edge) 4px;
}
.char-card.is-face-down {
  background: var(--color-action-primary);
  border-color: var(--color-action-primary-edge);
  border-width: 4px 4px var(--size-edge) 4px;
  color: var(--color-text-on-accent);
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: 40px;
}
.char-card.is-dimmed { opacity: .45; }

/* ============================================================
   Pinyin Chip — tone marks must stay legible.
   ============================================================ */

.pinyin-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 176px;
  height: 76px;
  padding: 0 var(--spacing-md);
  border-radius: var(--radius-full);
  background: var(--color-bg-surface);
  border-color: var(--color-border-default);
  border-width: 3px 3px var(--size-edge) 3px;
  color: var(--color-text-primary);
  font-size: var(--type-pinyin-m);
  font-weight: 700;
  line-height: 1.33;
  white-space: nowrap;
}

.pinyin-chip.is-selected {
  background: var(--color-action-audio-soft);
  border-color: var(--color-border-selected);
  border-width: 4px 4px var(--size-edge) 4px;
  color: var(--color-action-audio-edge);
}
.pinyin-chip.is-matched {
  background: var(--color-feedback-correct-soft);
  border-color: var(--color-feedback-correct);
  border-width: 4px 4px var(--size-edge) 4px;
  color: var(--color-feedback-correct-edge);
}
.pinyin-chip.is-try-again {
  background: var(--color-feedback-try-again-soft);
  border-color: var(--color-feedback-try-again);
  border-width: 4px 4px var(--size-edge) 4px;
  animation: shake var(--motion-shake) var(--ease-out);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

/* ============================================================
   Speaker Card — Memory Match audio card, pairs with Character Card M.
   ============================================================ */

.speaker-card {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--cc-w, 144px);
  height: var(--cc-h, 160px);
  border-radius: var(--radius-md);
  background: var(--color-action-primary);
  border-color: var(--color-action-primary-edge);
  border-width: 4px 4px var(--size-edge) 4px;
  color: var(--color-text-on-accent);
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: 40px;
}

.speaker-card .icon { width: 64px; height: 64px; display: none; }

.speaker-card.is-face-up,
.speaker-card.is-matched { font-size: 0; }
.speaker-card.is-face-up .icon,
.speaker-card.is-matched .icon { display: inline-flex; }

.speaker-card.is-face-up {
  background: var(--color-action-audio-soft);
  border-color: var(--color-action-audio);
  color: var(--color-action-audio);
}
.speaker-card.is-matched {
  background: var(--color-feedback-correct-soft);
  border-color: var(--color-feedback-correct);
  color: var(--color-feedback-correct);
}

/* ============================================================
   Avatar — animal art on a soft colour circle, white ring.
   ============================================================ */

.avatar {
  --av-size: 120px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--av-size);
  height: var(--av-size);
  border-radius: var(--radius-full);
  background: var(--avatar-persimmon-soft);
  border: 4px solid var(--color-bg-surface);
  box-shadow: var(--elevation-soft);
  flex: none;
  overflow: hidden;
}

.avatar img, .avatar svg { width: 72%; height: 72%; }

.avatar--l { --av-size: 120px; }
.avatar--m { --av-size: 80px; }
.avatar--s { --av-size: 56px; }
.avatar--xl { --av-size: 204px; }

.avatar[data-color="persimmon"] { background: var(--avatar-persimmon-soft); }
.avatar[data-color="jade"]      { background: var(--avatar-jade-soft); }
.avatar[data-color="sky"]       { background: var(--avatar-sky-soft); }
.avatar[data-color="sunshine"]  { background: var(--avatar-sunshine-soft); }
.avatar[data-color="plum"]      { background: var(--avatar-plum-soft); }

/* Colour swatch used when picking an avatar colour. */
.swatch {
  width: 44px; height: 44px;
  border-radius: var(--radius-full);
  border: 4px solid transparent;
  flex: none;
}
.swatch[data-color="persimmon"] { background: var(--persimmon-500); }
.swatch[data-color="jade"]      { background: var(--jade-500); }
.swatch[data-color="sky"]       { background: var(--sky-500); }
.swatch[data-color="sunshine"]  { background: var(--sunshine-500); }
.swatch[data-color="plum"]      { background: var(--plum-500); }
.swatch.is-selected { border-color: var(--color-text-primary); }

/* ============================================================
   Profile Card
   ============================================================ */

.profile-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  width: 240px;
  height: 300px;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  border-color: var(--color-border-default);
  border-width: 3px 3px var(--size-edge) 3px;
}

.profile-card__name {
  font-size: var(--type-section);
  font-weight: 800;
  line-height: 1.28;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.profile-card--add {
  background: var(--color-bg-soft);
  border: 4px dashed var(--color-border-default);
  color: var(--color-text-secondary);
}

.profile-card--add .plus-ring {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 120px; height: 120px;
  border-radius: var(--radius-full);
  background: var(--color-bg-sunken);
  color: var(--color-text-secondary);
}
.profile-card--add .plus-ring .icon { width: 48px; height: 48px; }

/* Age chip: "6 岁" */
.age-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  background: var(--color-bg-sunken);
  color: var(--color-text-secondary);
  white-space: nowrap;
}
.age-chip__n { font-size: 20px; font-weight: 600; line-height: 1.4; }
.age-chip__sui { font-family: var(--font-hanzi); font-weight: 500; font-size: 18px; }

/* ============================================================
   Station Node — stops on the 8-station path.
   ============================================================ */

.station {
  --st-size: 104px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--st-size);
  height: var(--st-size);
  border-radius: var(--radius-full);
  background: var(--color-state-locked-soft);
  border-color: var(--color-border-default);
  border-width: 3px 3px var(--size-edge) 3px;
  color: var(--color-state-locked);
  font-size: var(--type-title);
  font-weight: 800;
  line-height: 1.2;
  flex: none;
}

.station .icon { width: 40px; height: 40px; }

.station.is-current {
  background: var(--color-action-primary);
  border-color: var(--color-action-primary-edge);
  border-width: 0 0 var(--size-edge) 0;
  color: var(--color-text-on-accent);
  box-shadow: var(--elevation-raised);
}

.station.is-completed {
  background: var(--color-feedback-correct);
  border-color: var(--color-feedback-correct-edge);
  border-width: 0 0 var(--size-edge) 0;
  color: var(--color-icon-on-accent);
}
.station.is-completed .icon { width: 48px; height: 48px; }

/* Station 8 is the level check: plum when it is the current stop. */
.station--check.is-current {
  background: var(--color-activity-identification);
  border-color: var(--color-activity-identification-edge);
}

.station.is-locked { cursor: default; }

/* "Go" bubble above the current station */
.go-bubble {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  background: var(--color-bg-surface);
  border: 3px solid var(--color-action-primary);
  border-bottom-width: 5px;
  color: var(--color-action-primary-edge);
  font-size: var(--type-button);
  font-weight: 800;
  line-height: 1.17;
  white-space: nowrap;
  animation: bob 1.6s ease-in-out infinite;
}
.go-bubble .icon { width: 28px; height: 28px; }

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@media (prefers-reduced-motion: reduce) {
  .go-bubble, .path__stop .go-bubble { animation: none; }
}

/* ============================================================
   Progress Bar — no numbers, just the fill.
   ============================================================ */

.progress {
  flex: 0 1 480px;
  min-width: 0;
  height: 24px;
  padding: 4px;
  border-radius: var(--radius-full);
  background: var(--color-bg-sunken);
}

.progress__fill {
  height: 16px;
  width: 0;
  border-radius: var(--radius-full);
  background: var(--color-feedback-correct);
  transition: width 320ms var(--ease-out);
}

/* ============================================================
   Activity Badge
   ============================================================ */

.activity-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  background: var(--color-activity-this-or-that);
  color: var(--color-text-on-accent);
  font-size: var(--type-small);
  font-weight: 700;
  line-height: 1.38;
  white-space: nowrap;
}

.activity-badge[data-activity="this-or-that"]   { background: var(--color-activity-this-or-that); }
.activity-badge[data-activity="identification"] { background: var(--color-activity-identification); }
.activity-badge[data-activity="pinyin-match"]   { background: var(--color-activity-pinyin-match); }
.activity-badge[data-activity="memory-match"]   { background: var(--color-activity-memory-match); }

/* ============================================================
   Feedback Banner — slides up from the bottom. Never red.
   ============================================================ */

.banner {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  width: 560px;
  max-width: calc(100% - var(--spacing-xl));
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  background: var(--color-feedback-correct-soft);
  border-style: solid;
  border-color: var(--color-feedback-correct);
  border-width: 3px 3px var(--size-edge) 3px;
  color: var(--color-feedback-correct-edge);
  box-shadow: var(--elevation-raised);
  animation: banner-up var(--motion-banner) var(--ease-out);
}

.banner__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px; height: 72px;
  border-radius: var(--radius-full);
  background: var(--color-feedback-correct);
  color: var(--color-icon-on-accent);
  flex: none;
}
.banner__icon .icon { width: 40px; height: 40px; }

.banner__text { font-size: var(--type-section); font-weight: 800; line-height: 1.28; }

.banner--try-again {
  background: var(--color-feedback-try-again-soft);
  border-color: var(--color-feedback-try-again);
  color: var(--color-text-primary);
}
.banner--try-again .banner__icon {
  background: var(--color-feedback-try-again);
  color: var(--color-text-primary);
}

@keyframes banner-up {
  from { transform: translateY(24px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* ============================================================
   Grown-up Note — Identification, first use only.
   ============================================================ */

.grown-up-note {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  min-height: var(--size-tap-min);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  background: var(--color-activity-identification-soft);
  color: var(--color-activity-identification-edge);
  font-size: var(--type-small);
  font-weight: 700;
}
.grown-up-note .icon { width: 28px; height: 28px; }

/* ============================================================
   Phone portrait — the Figma design is iPad-only, so these sizes
   are set here, not read from the file.
   ============================================================ */

@media (max-width: 560px) {
  .btn { min-width: 0; padding: var(--spacing-md) var(--spacing-lg); }
  .btn .icon { width: 28px; height: 28px; }

  .round-btn--l { --rb-size: 88px; --rb-icon: 44px; }

  .char-card  { --cc-w: 156px; --cc-h: 176px; --cc-radius: var(--radius-md); }
  .char-card--m  { --cc-w: 100px; --cc-h: 112px; }
  .char-card--xl { --cc-w: min(288px, 80vw); --cc-h: 320px; }
  .char-card.is-face-down { font-size: 32px; }

  .speaker-card { --cc-w: 100px; --cc-h: 112px; font-size: 32px; }
  .speaker-card .icon { width: 44px; height: 44px; }

  .pinyin-chip { min-width: 128px; height: var(--size-tap-min); }

  .profile-card { width: 156px; height: 212px; gap: var(--spacing-sm); padding: var(--spacing-md); }
  .profile-card .avatar--l { --av-size: 84px; }
  .profile-card--add .plus-ring { width: 84px; height: 84px; }
  .profile-card--add .plus-ring .icon { width: 36px; height: 36px; }

  .station { --st-size: 76px; }
  .station .icon { width: 30px; height: 30px; }
  .station.is-completed .icon { width: 34px; height: 34px; }

  .banner { width: 100%; padding: var(--spacing-sm) var(--spacing-md); gap: var(--spacing-sm); }
  .banner__icon { width: 52px; height: 52px; }
  .banner__icon .icon { width: 28px; height: 28px; }

  .progress { height: 20px; flex: 1 1 auto; }
  .progress__fill { height: 12px; }
  /* A 390px header has to fit home + bar + badge without them colliding. */
  .screen__header { gap: var(--spacing-sm); }
  .screen__header-side { min-width: 0; flex: 0 0 auto; }
  .activity-badge { font-size: 12px; padding: 6px 10px; }

  .avatar--xl { --av-size: 132px; }
}

/* ============================================================
   Screen parts — pieces that live on one screen rather than in
   the Components page. Sizes read from the wireframes.
   ============================================================ */

/* Wordmark (01 Welcome) */
.wordmark {
  font-family: var(--font-hanzi);
  font-weight: 700;
  font-size: clamp(84px, 11.7vw, 140px);
  line-height: 1.1;
  color: var(--color-action-primary);
  margin: 0;
}

/* Text input (03 New player) — 576×88, radius 20 */
.input {
  width: 576px;
  max-width: 100%;
  height: var(--size-tap-lg);
  padding: 0 var(--spacing-lg);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface);
  border: 3px solid var(--color-border-default);
  color: var(--color-text-primary);
  font-size: var(--type-section);
  font-weight: 800;
  -webkit-user-select: text;
  user-select: text;
}
.input::placeholder { color: var(--color-text-disabled); font-weight: 700; }
.input:focus { outline: none; border-color: var(--color-border-selected); }

.field-label {
  font-size: var(--type-body);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.form {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  max-width: 590px;
}

/* Age button — 72px circle */
.age-btn {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  background: var(--color-bg-surface);
  border: 3px solid var(--color-border-default);
  color: var(--color-text-primary);
  font-size: var(--type-button);
  font-weight: 800;
  flex: none;
}
.age-btn.is-selected {
  background: var(--color-action-audio-soft);
  border: 4px solid var(--color-border-selected);
  color: var(--color-action-audio-edge);
}

/* Avatar / colour picker rows */
.picker-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.picker-row--friends { gap: var(--spacing-md); }
.picker-group { display: flex; align-items: center; gap: var(--spacing-md); flex-wrap: wrap; }
.picker-divider { width: 2px; height: 48px; background: var(--color-border-default); flex: none; }

.avatar-pick { padding: 0; border-radius: var(--radius-full); flex: none; line-height: 0; }
.avatar-pick .avatar { border-color: var(--color-bg-surface); }
.avatar-pick.is-selected .avatar { border: 5px solid var(--color-border-selected); }

/* New player preview column */
.preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  flex: none;
}
.preview__name {
  font-size: var(--type-title);
  font-weight: 800;
  min-height: 1.2em;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.new-player-body {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2xl);
  width: 100%;
  flex-wrap: wrap;
}

/* ============================================================
   Level card (04 Pick a level) — 180×150, radius 28
   ============================================================ */

.levels-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-lg);
  max-width: 996px;
}

.level-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 180px;
  height: 150px;
  border-radius: var(--radius-lg);
  background: var(--color-state-locked-soft);
  border: 3px solid var(--color-border-default);
  border-bottom-width: var(--size-edge);
  color: var(--color-text-disabled);
  font-size: var(--type-section);
  font-weight: 800;
  flex: none;
}
.level-card .icon { width: 32px; height: 32px; }

.level-card.is-available {
  background: var(--color-bg-surface);
  border: 4px solid var(--color-border-default);
  border-bottom-width: var(--size-edge);
  color: var(--color-text-primary);
}
.level-card.is-selected {
  border-color: var(--color-action-primary);
  border-bottom-width: 8px;
  color: var(--color-action-primary-edge);
}
.level-card__id { font-size: var(--type-title); font-weight: 800; line-height: 1.2; }
.level-card__count {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-secondary);
}
.level-card__count-n { font-size: 20px; font-weight: 600; }
.level-card__count-zi { font-family: var(--font-hanzi); font-weight: 500; font-size: 18px; }

/* ============================================================
   Level path (05) — stations placed on a drawn trail.
   Landscape zig-zags across; phone zig-zags down.
   ============================================================ */

.player {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 0;
}
.player__name {
  font-size: var(--type-section);
  font-weight: 800;
  max-width: 7ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.level-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px var(--spacing-md);
  border-radius: var(--radius-full);
  background: var(--color-bg-sunken);
  color: var(--color-text-secondary);
  font-size: var(--type-button);
  font-weight: 800;
  white-space: nowrap;
}

.path {
  position: relative;
  width: 100%;
  flex: 1;
  min-height: 420px;
}

/* Portrait tablets run the trail vertically, so the level label would sit
   on top of the first station. */
@media (orientation: portrait) and (max-width: 1024px) {
  .path__label { display: none; }
}

.path__trail {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.path__trail path {
  fill: none;
  stroke: var(--color-bg-sunken);
  stroke-width: 18px;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.path__stop {
  position: absolute;
  transform: translate(-50%, -50%);
  line-height: 0;
}
/* Absolute so it never shifts the station node off the trail. The bob
   keyframes must carry the -50% themselves, or they overwrite the centring. */
.path__stop .go-bubble {
  position: absolute;
  left: 50%;
  bottom: calc(100% + var(--spacing-sm));
  transform: translate(-50%, 0);
  animation-name: bob-centred;
}

@keyframes bob-centred {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, -6px); }
}

.path__label {
  position: absolute;
  top: 0;
  left: 0;
  font-size: var(--type-section);
  font-weight: 800;
  color: var(--color-text-secondary);
}

@media (max-width: 560px) {
  .input { height: var(--size-tap-min); font-size: var(--type-body); }
  .age-btn { width: var(--size-tap-min); height: var(--size-tap-min); }
  .picker-row { gap: var(--spacing-sm); }
  .picker-divider { display: none; }
  /* Keep the animals and the colours on separate rows so a swatch never
     reads as a fourth animal. */
  .picker-row--friends { flex-direction: column; align-items: flex-start; gap: var(--spacing-md); }
  .picker-group { gap: var(--spacing-sm); }
  /* Smaller Go bubble so it clears the neighbouring station in the lanes. */
  .path__stop .go-bubble { padding: 6px 14px; font-size: 18px; gap: 4px; }
  .path__stop .go-bubble .icon { width: 22px; height: 22px; }
  .new-player-body { gap: var(--spacing-md); }
  .preview__name { font-size: var(--type-section); }
  .level-card { width: 104px; height: 104px; }
  .level-card__id { font-size: var(--type-section); }
  .levels-grid { gap: var(--spacing-sm); }
  .path { min-height: 620px; }
  .path__trail path { stroke-width: 14; }
  .path__label { display: none; }   /* the header chip already shows the level */
}

/* ============================================================
   Activity shell — the frame every activity runs inside.
   ============================================================ */

.activity {
  flex: 1;
  min-height: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2xl);
  position: relative;
}

/* The activity mounts into this host, which has to centre its own content:
   being a centred flex item does not centre what is inside it. */
.activity__host {
  flex: 1;
  min-height: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  justify-content: safe center;
  gap: 56px;
}

/* The banner sits at the bottom of the activity area, over the content. */
.activity__feedback {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

.choices {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 64px;
  flex-wrap: wrap;
}

/* ============================================================
   Well done (12) — hero mark, confetti, back to the path.
   ============================================================ */

.hero {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 200px;
  height: 200px;
  border-radius: var(--radius-full);
  background: var(--color-feedback-correct);
  color: var(--color-icon-on-accent);
  flex: none;
}
.hero .icon { width: 112px; height: 112px; }

.hero--try-again { background: var(--color-feedback-try-again); color: var(--color-text-primary); }
.hero--check { background: var(--color-activity-identification); }

/* Confetti is generated in code, in token colours, at percentage positions so
   it scatters correctly at any size. The Figma version is pinned to 1194x834. */
.confetti { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.confetti span {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  opacity: .9;
}
.confetti span.bar {
  width: 22px;
  height: 12px;
  border-radius: 4px;
}

@media (max-width: 560px) {
  .activity { gap: var(--spacing-lg); }
  .activity__host { gap: var(--spacing-xl); }
  .choices { gap: var(--spacing-lg); }
  .hero { width: 132px; height: 132px; }
  .hero .icon { width: 72px; height: 72px; }
  .confetti span { width: 12px; height: 12px; }
  .confetti span.bar { width: 16px; height: 9px; }
}

@media (max-height: 460px) {
  .activity { gap: var(--spacing-lg); }
  .hero { width: 120px; height: 120px; }
  .hero .icon { width: 64px; height: 64px; }
}

/* ============================================================
   Identification (08, 09)
   ============================================================ */

.ident-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  width: 380px;
  max-width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  border-color: var(--color-border-default);
  border-width: 3px 3px var(--size-edge) 3px;
  color: var(--color-text-primary);
}

.ident-card__hanzi {
  font-family: var(--font-hanzi);
  font-weight: 500;
  font-size: var(--type-char-xl);
  line-height: 1.1;
}

/* Flipped: the character shrinks to make room for the pinyin. */
.ident-card.is-flipped {
  background: var(--color-action-audio-soft);
  border-color: var(--color-border-selected);
  border-width: 4px 4px 8px 4px;
}
.ident-card.is-flipped .ident-card__hanzi { font-size: var(--type-char-l); }

.ident-card__pinyin {
  font-size: var(--type-pinyin-l);
  font-weight: 700;
  color: var(--color-action-audio-edge);
}
.ident-card__speaker { color: var(--color-action-audio); }
.ident-card__speaker .icon { width: 44px; height: 44px; }

.ident-hint {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-secondary);
  font-size: var(--type-small);
  font-weight: 700;
}
.ident-hint .icon { width: 24px; height: 24px; }

.ident-answer { display: flex; align-items: center; gap: var(--spacing-xl); flex-wrap: wrap; justify-content: center; }

/* ============================================================
   Pinyin Match (10)
   Landscape: characters in one row, pinyin in a second.
   Portrait and phone: two side-by-side columns.
   ============================================================ */

.pm { display: flex; flex-direction: column; align-items: center; gap: 72px; }
.pm__chars { display: flex; align-items: center; justify-content: center; gap: var(--spacing-lg); flex-wrap: wrap; }
.pm__pinyin { display: flex; align-items: center; justify-content: center; gap: 20px; flex-wrap: wrap; }

@media (max-aspect-ratio: 11/10), (max-width: 719px) {
  /* Two side-by-side columns. They stretch to the same height and distribute
     their items, so a character and its row of pinyin stay level even though
     the cards and the chips are different heights. */
  .pm {
    flex-direction: row;
    align-items: stretch;
    justify-content: center;
    gap: var(--spacing-lg);
  }
  .pm__chars, .pm__pinyin {
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: var(--spacing-sm);
  }
}

/* ============================================================
   Memory Match (11) — 6 pairs, 12 cards.
   ============================================================ */

.mm {
  display: grid;
  grid-template-columns: repeat(6, auto);
  gap: var(--spacing-lg) 20px;
  justify-content: center;
  align-content: center;
}

@media (max-aspect-ratio: 11/10) and (min-width: 561px) {
  .mm { grid-template-columns: repeat(4, auto); }
}

@media (max-width: 560px) {
  .mm { grid-template-columns: repeat(3, auto); gap: var(--spacing-sm); }
  .ident-card { width: min(300px, 86vw); height: 320px; }
  .ident-answer { gap: var(--spacing-md); }
  .pm { gap: var(--spacing-md); }
}