/* ============================================================================
 * Study Arena — the game screen in Medcue's warm daylight palette.
 *
 * Arena owns these semantic colours instead of inheriting an obsolete dark
 * preference. That keeps setup, live questions and reveal states coherent
 * from first paint through the end of a match.
 * ========================================================================= */

body.arena-page {
  --arena-coral: #A93620;
  --arena-sun: #F5E9C8;
  --arena-tangerine: #B85C22;
  --arena-ink: #271A14;
  --arena-ink-soft: #5B4337;
  --arena-muted: #725A4D;
  --arena-canvas: #FFF8F0;
  --arena-surface: #FFFDF9;
  --arena-recessed: #F6EEE5;
  --arena-line: #D8C7B7;
  --arena-line-strong: #A28D7A;
  --arena-correct: #20633F;
  --arena-correct-bg: #EAF4EC;
  --arena-wrong: #8D3046;
  --arena-wrong-bg: #F9EAEE;
  --arena-shadow: none;
  --arena-shadow-pop: none;
  --arena-data: 'Atkinson Hyperlegible Next', sans-serif;
  --arena-display: var(--folio-display, 'Bricolage Grotesque', sans-serif);

  min-height: 100vh;
  background: var(--arena-canvas) !important;
  color: var(--arena-ink) !important;
  color-scheme: light;
}

html[data-theme='dark'] body.arena-page {
  background: var(--arena-canvas) !important;
  color: var(--arena-ink) !important;
  color-scheme: light !important;
}

.arena-main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 80px;
}

/* ---------- intro ---------- */

.arena-back {
  display: inline-block;
  margin-bottom: 14px;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--arena-coral);
  text-decoration: none;
}

.arena-back:hover { text-decoration: underline; }

.arena-kicker {
  margin: 0 0 6px;
  font-family: var(--arena-data);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--arena-coral);
}

.arena-intro h1 {
  margin: 0 0 8px;
  font-family: var(--arena-display);
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

body.mc-app.arena-page .arena-intro h1 {
  color: var(--arena-ink) !important;
}

.arena-lede {
  margin: 0 0 26px;
  max-width: 46ch;
  font-size: 1.02rem;
  color: var(--arena-ink-soft);
}

/* ---------- the board ---------- */

.arena-board {
  position: relative;
  border-radius: 28px;
  background: var(--arena-recessed);
  box-shadow: var(--arena-shadow);
  overflow: hidden;
}

/* The score line is the single broadcast cue; the rest of the board stays calm. */
.arena-trace {
  display: block;
  height: 6px;
  background: var(--arena-coral);
}

.arena-trace span,
.arena-trace i { display: none; }

.arena-hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 22px 0;
}

.arena-match-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--arena-data);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--arena-coral);
}

.arena-match-status i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--arena-coral);
  animation: arena-live-dot 1.6s ease-in-out infinite;
}

.arena-board.is-live .arena-match-status i { animation-duration: 0.9s; }

.arena-audio {
  border: 1px solid var(--arena-line-strong);
  border-radius: 999px;
  background: var(--arena-surface);
  color: var(--arena-ink-soft);
  font-family: var(--arena-data);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 9px 15px;
  cursor: pointer;
}

.arena-audio::before { content: "◖))"; margin-right: 7px; color: var(--arena-coral); }
.arena-audio[aria-pressed="false"]::before { content: "◖×"; color: var(--arena-muted); }
.arena-audio:disabled { opacity: 0.55; cursor: not-allowed; }

.arena-connection {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 12px 22px 0;
  padding: 10px 15px;
  border-radius: 12px;
  background: #FFEFC2;
  color: #7A4D00;
  font-size: 0.88rem;
  font-weight: 600;
}

.arena-connection-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--arena-tangerine);
  animation: arena-pulse 1.1s ease-in-out infinite;
}

/* The full-bleed flash over a correct call, a miss or a new round. */
.arena-board::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  z-index: 4;
}

.arena-board.is-correct-pulse::after { background: rgba(15, 107, 56, 0.16); animation: arena-screen-hit 680ms ease-out; }
.arena-board.is-wrong-pulse::after { background: rgba(163, 20, 50, 0.14); animation: arena-screen-hit 680ms ease-out; }
.arena-board.is-round-pulse::after { background: rgba(255, 138, 0, 0.18); animation: arena-screen-hit 760ms ease-out; }
.arena-board.is-complete-pulse::after { background: rgba(255, 201, 51, 0.26); animation: arena-screen-hit 1s ease-out; }

.arena-moment {
  position: absolute;
  top: 42%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 7;
  opacity: 0;
  pointer-events: none;
  font-family: var(--arena-display);
  font-size: clamp(1.9rem, 6vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-align: center;
  color: var(--arena-coral);
  text-shadow: 0 6px 0 rgba(255, 255, 255, 0.85), 0 18px 40px rgba(194, 47, 20, 0.25);
}

.arena-moment.is-showing { animation: arena-moment-hit 1.25s cubic-bezier(0.2, 0.9, 0.2, 1) both; }
.arena-moment.is-correct { color: var(--arena-correct); }
.arena-moment.is-wrong { color: var(--arena-wrong); }
.arena-moment.is-round { color: var(--arena-tangerine); }
.arena-moment.is-complete { color: var(--arena-coral); animation-duration: 1.8s; }

/* ---------- setup ---------- */

.arena-setup { padding: 22px 22px 26px; }

.arena-setup-copy { margin-bottom: 20px; }
.arena-setup-copy h2 {
  margin: 4px 0 6px;
  font-family: var(--arena-display);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  letter-spacing: -0.025em;
}
.arena-setup-copy p { margin: 0; color: var(--arena-ink-soft); }

.arena-board-label {
  font-family: var(--arena-data);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--arena-coral);
}

.arena-entry-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  align-items: start;
}

.arena-panel {
  display: grid;
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--arena-line);
  border-radius: 22px;
  background: var(--arena-surface);
  box-shadow: var(--arena-shadow);
}

.arena-panel h2 {
  margin: 4px 0 0;
  font-family: var(--arena-display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.arena-panel p { margin: 0; color: var(--arena-ink-soft); font-size: 0.92rem; }

.arena-fieldset {
  border: 0;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.arena-fieldset legend {
  padding: 0 0 8px;
  font-family: var(--arena-data);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--arena-muted);
}

.arena-choice-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border: 2px solid var(--arena-line);
  border-radius: 16px;
  background: var(--arena-surface);
  cursor: pointer;
}

.arena-choice-card:has(input:checked) {
  border-color: var(--arena-coral);
  background: #FFF6EF;
}

.arena-choice-card strong { display: block; font-size: 1rem; }
.arena-choice-card small { display: block; color: var(--arena-ink-soft); font-size: 0.85rem; }

.arena-access label {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 0.95rem;
}

.arena-form-row { display: grid; gap: 7px; }
.arena-form-row label { font-weight: 700; font-size: 0.9rem; }

.arena-rules-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(112px, 0.65fr);
  gap: 12px;
  align-items: start;
}

.arena-rules-grid > * { min-width: 0; }

.arena-difficulty-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--arena-line-strong);
  border-radius: 10px;
}

.arena-difficulty-options label {
  display: flex;
  min-width: 0;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 8px;
  background: var(--arena-surface);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
}

.arena-difficulty-options label + label { border-left: 1px solid var(--arena-line-strong); }
.arena-difficulty-options label:has(input:checked) {
  background: #FBEDE8;
  color: var(--arena-ink);
  box-shadow: inset 0 -3px 0 var(--arena-coral);
}
.arena-difficulty-options input { accent-color: var(--arena-coral); }

.arena-help { color: var(--arena-muted); font-size: 0.85rem; }

/* ---------- scoreboard ---------- */

#arena-stage { padding: 0 22px 24px; }

.arena-lanes { display: grid; gap: 10px; margin-bottom: 18px; }

.arena-players {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: stretch;
  padding: 16px 18px;
  border-radius: 20px;
  background: var(--arena-coral);
  color: #FFF5ED;
  box-shadow: var(--arena-shadow-pop);
}

.arena-players:only-child { margin-bottom: 18px; }

.arena-player {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "avatar name score"
    "avatar meta score"
    "avatar streak score";
  gap: 2px 13px;
  align-items: center;
  padding: 6px 4px;
  border-radius: 14px;
}

.arena-player.is-leading { background: rgba(255, 255, 255, 0.14); }

/* Broadcast convention: avatars sit on the outer edges, the two scores face each
   other across the clock. The second player is the mirror of the first. */
.arena-players > .arena-player:last-child {
  grid-template-columns: auto 1fr auto;
  grid-template-areas:
    "score name avatar"
    "score meta avatar"
    "score streak avatar";
  text-align: right;
}

.arena-players > .arena-player:last-child .arena-streak { justify-content: flex-end; }
.arena-players > .arena-player:last-child .arena-score-pop { right: auto; left: 0; }

.arena-player-avatar {
  grid-area: avatar;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--arena-sun);
  color: #7A2415;
  font-family: var(--arena-display);
  font-size: 1.25rem;
  font-weight: 800;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.26);
}

.arena-player strong { grid-area: name; font-size: 0.98rem; font-weight: 800; }
.arena-player small { grid-area: meta; font-size: 0.78rem; color: #FFE0CE; }

/* Jumbotron numerals — the score should read from across a room. */
.arena-score {
  grid-area: score;
  font-family: var(--arena-data);
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #FFF5ED;
}

.arena-player.is-leading .arena-score { color: var(--arena-sun); }

.arena-matchup {
  align-self: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-family: var(--arena-data);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #FFF5ED;
}

/* Its own row: sharing the status line's grid area stacked the pips on top of the
   player's role text. */
.arena-streak {
  grid-area: streak;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 3px;
  font-family: var(--arena-data);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--arena-sun);
}

.arena-streak-pips { display: inline-flex; gap: 3px; }
.arena-streak-pips i {
  width: 14px;
  height: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.3);
}
.arena-streak-pips i.is-lit { background: var(--arena-sun); }
.arena-streak.is-tier-4 .arena-streak-pips i.is-lit,
.arena-streak.is-tier-5 .arena-streak-pips i.is-lit {
  background: #FFF5ED;
  box-shadow: 0 0 9px var(--arena-sun);
}
.arena-streak.is-tier-5 { color: #FFF5ED; }

.arena-score-pop {
  position: absolute;
  top: -4px;
  right: 0;
  font-family: var(--arena-data);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--arena-sun);
  animation: arena-score-pop 1.4s cubic-bezier(0.2, 0.9, 0.2, 1) both;
}

.arena-momentum {
  height: 8px;
  border-radius: 999px;
  background: var(--arena-line-strong);
  overflow: hidden;
}

.arena-momentum-fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--arena-coral);
  transition: width 520ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

/* ---------- round meta and clock ---------- */

.arena-round-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.arena-timer {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--arena-surface);
  border: 2px solid var(--arena-line-strong);
  font-family: var(--arena-data);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--arena-ink);
  box-shadow: none;
}

.arena-timer.is-pressure {
  color: #FFF5ED;
  background: var(--arena-coral);
  border-color: var(--arena-coral);
  box-shadow: none;
  animation: arena-timer-pressure 0.62s ease-in-out infinite;
}

.arena-timer.is-reveal {
  font-size: 0.86rem;
  letter-spacing: 0.04em;
  padding: 9px 16px;
  color: var(--arena-ink-soft);
}

.arena-progress {
  display: grid;
  grid-template-columns: repeat(var(--round-count, 10), 1fr);
  gap: 5px;
  margin-bottom: 18px;
}

.arena-progress span {
  height: 7px;
  border-radius: 999px;
  background: var(--arena-line-strong);
}

.arena-progress span.is-done { background: var(--arena-coral); }
.arena-progress span.is-current { background: var(--arena-sun); }

/* ---------- question card ---------- */

.arena-question {
  padding: 26px 28px;
  border-radius: 24px;
  background: var(--arena-surface);
  box-shadow: var(--arena-shadow-pop);
}

.arena-question h2 {
  margin: 0 0 18px;
  font-family: var(--arena-display);
  font-size: clamp(1.4rem, 3vw, 1.95rem);
  line-height: 1.22;
  letter-spacing: -0.025em;
}

.arena-stem {
  margin: 0 0 13px;
  font-size: 1rem;
  line-height: 1.62;
  color: var(--arena-ink-soft);
}

.arena-question-media {
  margin: 0 0 16px;
  padding: 12px;
  border-radius: 16px;
  background: var(--arena-recessed);
}

.arena-question-media img {
  display: block;
  width: 100%;
  max-height: 340px;
  object-fit: contain;
  border-radius: 10px;
}

/* Highlighting a vignette the way a candidate would on paper. */
.arena-stem,
.arena-question h2 { cursor: text; }

mark.arena-highlight {
  background: #FFE9A8;
  color: inherit;
  border-radius: 3px;
  padding: 0 1px;
  box-shadow: 0 1px 0 #EFCF74;
  cursor: pointer;
}

mark.arena-highlight:hover { background: #FFD866; }

.arena-highlight-actions:empty { display: none; }
.arena-highlight-actions { margin: -4px 0 14px; }
.arena-highlight-clear { min-height: 44px; padding: 9px 16px; font-size: 0.85rem; }

.arena-options { display: grid; gap: 8px; }

.arena-option {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  min-height: 56px;
  padding: 13px 17px;
  border: 2px solid var(--arena-line);
  border-radius: 16px;
  background: var(--arena-surface);
  color: var(--arena-ink);
  font-size: 0.98rem;
  cursor: pointer;
}

/* The lettered badge is the selection indicator, so the native control is taken
   out of the layout without leaving the keyboard — it still focuses and toggles. */
.arena-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.arena-option > span:not(.arena-option-result) {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.arena-option-letter {
  flex: 0 0 auto;
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--arena-recessed);
  color: var(--arena-ink-soft);
  font-family: var(--arena-data);
  font-size: 0.82rem;
  font-weight: 700;
  transition: transform 140ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.arena-option:has(input:checked) .arena-option-letter,
.arena-option.is-pending .arena-option-letter { transform: scale(1.12); }

.arena-option:has(input:checked),
.arena-option.is-pending {
  border-color: var(--arena-coral);
  background: #FFF6EF;
}

.arena-option:has(input:checked) .arena-option-letter,
.arena-option.is-pending .arena-option-letter {
  background: var(--arena-coral);
  color: #FFF5ED;
}

.arena-option.is-correct {
  border-color: var(--arena-correct);
  background: var(--arena-correct-bg);
  color: var(--arena-ink);
}

.arena-option.is-correct .arena-option-letter { background: var(--arena-correct); color: #fff; }

.arena-option.is-wrong {
  border-color: var(--arena-wrong);
  background: var(--arena-wrong-bg);
  color: var(--arena-ink);
}

.arena-option.is-wrong .arena-option-letter { background: var(--arena-wrong); color: #fff; }

.arena-option-result {
  font-family: var(--arena-data);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid currentColor;
}

.arena-option.is-correct .arena-option-result { color: var(--arena-correct); }
.arena-option.is-wrong .arena-option-result { color: var(--arena-wrong); }

.arena-option:has(input:focus-visible) {
  outline: 3px solid var(--arena-coral);
  outline-offset: 3px;
}

/* The bank's per-option rationale, sitting under the option it explains. */
.arena-option-why {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  padding-top: 8px;
  border-top: 1px dashed var(--arena-line-strong);
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--arena-ink-soft);
  cursor: default;
}

.arena-option.is-correct .arena-option-why { border-top-color: rgba(15, 107, 56, 0.3); }
.arena-option.is-wrong .arena-option-why { border-top-color: rgba(163, 20, 50, 0.3); }

.arena-result-callout.is-paused {
  border-left-color: var(--arena-tangerine);
  background: #FFEFC2;
  color: #7A4D00;
}

.arena-timer.is-held {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7A4D00;
  background: #FFEFC2;
  border-color: #F2D98E;
  box-shadow: none;
  animation: none;
}

.arena-result-callout {
  margin: 16px 0 0;
  padding: 14px 17px;
  border-left: 5px solid var(--arena-line-strong);
  border-radius: 0 12px 12px 0;
  background: var(--arena-recessed);
  font-weight: 600;
}

.arena-result-callout strong { display: block; font-size: 1.05rem; }
.arena-result-callout p { margin: 4px 0 0; font-weight: 400; color: var(--arena-ink-soft); }

.arena-result-callout.is-correct-result {
  border-left-color: var(--arena-correct);
  background: var(--arena-correct-bg);
  color: #0B4A27;
}

.arena-result-callout.is-wrong-result {
  border-left-color: var(--arena-wrong);
  background: var(--arena-wrong-bg);
  color: #7C0F26;
}

.arena-result-callout.is-save {
  border-left-color: var(--arena-tangerine);
  background: #FFEFC2;
  color: #7A4D00;
}

.arena-teaching {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--arena-line);
}

.arena-teaching h3 {
  margin: 0 0 7px;
  font-family: var(--arena-display);
  font-size: 1.12rem;
  letter-spacing: -0.02em;
}

.arena-teaching p { margin: 0; color: var(--arena-ink-soft); line-height: 1.62; }

/* ---------- buttons ---------- */

.arena-game-actions,
.arena-reaction-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.arena-game-actions { margin-top: 18px; }

.arena-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 26px;
  border: 0;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}

.arena-button-primary {
  background: var(--arena-coral);
  color: #FFFFFF;
  box-shadow: none;
}

.arena-button-coral {
  background: var(--arena-coral);
  color: #FFF5ED;
  box-shadow: none;
}

.arena-button-secondary {
  background: var(--arena-sun);
  color: #7A2415;
  box-shadow: none;
}

.arena-button-quiet {
  background: var(--arena-surface);
  color: var(--arena-ink-soft);
  border: 2px solid var(--arena-line-strong);
}

.arena-button:hover:not(:disabled) { filter: brightness(.96); }
.arena-button:active:not(:disabled) { filter: brightness(.91); }
.arena-button:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }
.arena-button:focus-visible { outline: 3px solid var(--arena-ink); outline-offset: 3px; }

.arena-icon-action {
  display: inline-grid;
  place-items: center;
  min-width: 46px;
  min-height: 46px;
  padding: 0 12px;
  border: 2px solid var(--arena-line-strong);
  border-radius: 14px;
  background: var(--arena-surface);
  font-size: 1.15rem;
  cursor: pointer;
  transition: transform 120ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.arena-icon-action:hover:not(:disabled) { transform: translateY(-2px) scale(1.06); border-color: var(--arena-coral); }
.arena-icon-action:disabled { opacity: 0.5; cursor: not-allowed; }
.arena-icon-action:focus-visible { outline: 3px solid var(--arena-coral); outline-offset: 2px; }

/* clinical-folio.css sets `display: inline-flex` on any label containing a radio,
   which out-specifies `.arena-option` and quietly turns the answer rows from a grid
   into a flex line — the result badge then steals width from the option text. */
body.mc-app label.arena-option,
body.splash-student label.arena-option,
body.splash-student.mc-app.arena-page .arena-board label.arena-option {
  display: grid;
}

body.mc-app label.arena-choice-card,
body.splash-student label.arena-choice-card {
  display: flex;
}

/* The shared Splash form layer restyles every button and heading globally. These
   keep the Arena's own treatment; without them the board inherits the generic
   submit-button look and loses its game colours. */
body.splash-student .arena-board :is(h2, h3) {
  color: var(--arena-ink) !important;
}

body.splash-student .arena-players :is(h2, h3, strong) {
  color: #FFF5ED !important;
}

body.splash-student.mc-app.arena-page .arena-board button.arena-button {
  border-radius: 8px !important;
  font-family: "Atkinson Hyperlegible Next", sans-serif !important;
}

body.splash-student.mc-app.arena-page .arena-board button.arena-button-primary {
  border-color: var(--arena-coral) !important;
  background: var(--arena-coral) !important;
  color: #FFFFFF !important;
  box-shadow: none !important;
}

body.splash-student.mc-app.arena-page .arena-board button.arena-button-coral {
  border-color: var(--arena-coral) !important;
  background: var(--arena-coral) !important;
  color: #FFF5ED !important;
  box-shadow: none !important;
}

body.splash-student.mc-app.arena-page .arena-board button.arena-button-secondary {
  border-color: var(--arena-sun) !important;
  background: var(--arena-sun) !important;
  color: #7A2415 !important;
  box-shadow: none !important;
}

body.splash-student.mc-app.arena-page .arena-board button.arena-button-quiet {
  border: 2px solid var(--arena-line-strong) !important;
  background: var(--arena-surface) !important;
  color: var(--arena-ink-soft) !important;
  box-shadow: none !important;
}

.arena-exit { justify-content: flex-end; opacity: 0.75; }
.arena-exit:hover, .arena-exit:focus-within { opacity: 1; }

/* ---------- room header, lobby ---------- */

.arena-stage-head {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 18px;
}

.arena-stage-title {
  margin: 4px 0 4px;
  font-family: var(--arena-display);
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  letter-spacing: -0.03em;
}

.arena-stage-head p { margin: 0; color: var(--arena-ink-soft); }

.arena-room-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.arena-room-code {
  display: inline-flex;
  padding: 10px 18px;
  border-radius: 12px;
  background: var(--arena-ink);
  color: var(--arena-sun);
  font-family: var(--arena-data);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.22em;
}

.arena-waiting {
  display: grid;
  place-items: center;
  padding: 34px 20px;
  border: 2px dashed var(--arena-line-strong);
  border-radius: 20px;
  text-align: center;
  background: var(--arena-surface);
}

.arena-waiting h3 {
  margin: 14px 0 6px;
  font-family: var(--arena-display);
  font-size: 1.3rem;
}

.arena-waiting p { margin: 0; color: var(--arena-ink-soft); }

.arena-waiting-orbit {
  width: 54px;
  height: 54px;
  margin: 0 auto;
  border-radius: 50%;
  border: 3px solid var(--arena-line-strong);
  border-top-color: var(--arena-coral);
  animation: arena-orbit 1.1s linear infinite;
}

/* ---------- room chat ---------- */

.arena-social {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding: 16px;
  border: 1px solid var(--arena-line);
  border-radius: 20px;
  background: var(--arena-surface);
  box-shadow: var(--arena-shadow);
}

.arena-feed-list {
  display: grid;
  gap: 6px;
  max-height: 188px;
  overflow-y: auto;
  margin: 0;
  padding: 0;
  list-style: none;
  overscroll-behavior: contain;
}

.arena-feed-entry {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  gap: 9px;
  align-items: baseline;
  padding: 8px 12px;
  border-radius: 12px;
  background: var(--arena-recessed);
  font-size: 0.93rem;
  overflow-wrap: anywhere;
}

.arena-feed-entry.is-self { background: #FFF0E4; }
.arena-feed-entry.is-signal { background: #FFEFC2; }

.arena-feed-who {
  font-family: var(--arena-data);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--arena-muted);
}

.arena-feed-entry.is-self .arena-feed-who { color: var(--arena-coral); }
.arena-feed-emoji { font-size: 1rem; }
.arena-feed-empty { padding: 10px 4px; font-size: 0.9rem; color: var(--arena-muted); }

.arena-chat-composer { display: flex; gap: 9px; align-items: center; }

/* cue-stack.css and splash.css paint every input with !important, so holding
   these colours needs the same weight. */
.arena-chat-input,
body.splash-student.arena-page .arena-board input.arena-chat-input {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 46px;
  padding: 11px 15px !important;
  border: 2px solid var(--arena-line-strong) !important;
  border-radius: 14px !important;
  background: var(--arena-surface) !important;
  color: var(--arena-ink) !important;
  font: inherit;
  font-size: 0.96rem;
  box-shadow: none !important;
}

.arena-chat-input::placeholder,
body.splash-student.arena-page .arena-board input.arena-chat-input::placeholder {
  color: var(--arena-muted) !important;
  opacity: 1;
}

.arena-chat-input:focus-visible { outline: 3px solid var(--arena-coral); outline-offset: 2px; }

.arena-burst {
  position: absolute;
  bottom: 18%;
  z-index: 6;
  font-size: 2rem;
  pointer-events: none;
  animation: arena-burst-rise 1.8s cubic-bezier(0.22, 0.85, 0.3, 1) both;
}

/* ---------- recap ---------- */

.arena-recap { display: grid; gap: 14px; }

.arena-recap-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.arena-recap-card {
  position: relative;
  padding: 20px;
  border: 2px solid var(--arena-line);
  border-radius: 20px;
  background: var(--arena-surface);
  text-align: center;
}

.arena-recap-card small { display: block; color: var(--arena-ink-soft); font-size: 0.85rem; }

.arena-recap-card strong {
  display: block;
  margin: 6px 0 4px;
  font-family: var(--arena-data);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--arena-coral);
}

.arena-recap-card p { margin: 0; color: var(--arena-ink-soft); font-size: 0.9rem; }

.arena-recap-card.is-champion {
  border-color: var(--arena-sun);
  background: #FFFBF0;
  box-shadow: none;
}

.arena-crown { position: absolute; top: -16px; left: 50%; transform: translateX(-50%); font-size: 1.7rem; color: var(--arena-sun); }
.arena-recap-note { font-family: var(--arena-data); font-size: 0.74rem; color: var(--arena-muted); }

.arena-live {
  margin: 14px 22px 0;
  min-height: 1.2em;
  font-size: 0.88rem;
  color: var(--arena-ink-soft);
}

.arena-noscript { margin-top: 18px; color: var(--arena-ink-soft); }

/* ---------- motion ---------- */

@keyframes arena-pulse { 50% { opacity: 0.35; transform: scale(0.72); } }
@keyframes arena-orbit { to { transform: rotate(360deg); } }
@keyframes arena-live-dot { 50% { opacity: 0.28; } }
@keyframes arena-screen-hit { 0% { opacity: 0; } 18% { opacity: 1; } 100% { opacity: 0; } }
@keyframes arena-moment-hit {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(0.78); }
  16%, 68% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%, -60%) scale(1.04); }
}
@keyframes arena-timer-pressure { 50% { transform: scale(1.05); } }
@keyframes arena-burst-rise {
  0% { opacity: 0; transform: translateY(10px) scale(0.6); }
  18% { opacity: 1; transform: translateY(-6px) scale(1.15); }
  100% { opacity: 0; transform: translateY(-140px) scale(0.92); }
}
@keyframes arena-score-pop {
  0% { opacity: 0; transform: translateY(10px) scale(0.8); }
  22% { opacity: 1; transform: translateY(0) scale(1.16); }
  100% { opacity: 0; transform: translateY(-26px) scale(1); }
}

/* ---------- responsive ---------- */

@media (max-width: 720px) {
  /* The fixed app navigation would otherwise sit over the live board on a phone. */
  body.arena-page .tnav-links { display: none !important; }
}

@media (max-width: 760px) {
  /* Vertical space is the scarce resource on a phone: every row above the options
     is a row the player has to scroll past on every single question. */
  .arena-main { width: min(100% - 16px, 1180px); padding: 16px 0 48px; }
  .arena-intro { margin-bottom: 4px; }
  .arena-intro h1 { font-size: 1.9rem; }
  .arena-lede { display: none; }
  .arena-kicker { font-size: 0.66rem; letter-spacing: 0.16em; }

  .arena-board { border-radius: 20px; }
  #arena-stage { padding: 0 12px 18px; }
  .arena-setup { padding: 14px 12px 18px; }
  .arena-hud { padding: 10px 12px 0; }
  .arena-live { margin: 10px 12px 0; }
  .arena-connection { margin: 10px 12px 0; }

  /* The scoreboard stays a scoreboard — two players facing each other — instead of
     stacking into a tall block that pushes the case off screen. */
  .arena-players {
    grid-template-columns: 1fr auto 1fr;
    gap: 8px;
    padding: 11px 12px;
    border-radius: 16px;
  }

  .arena-player {
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-areas:
      "avatar name"
      "avatar score"
      "streak streak";
    gap: 1px 9px;
    padding: 2px;
  }

  .arena-players > .arena-player:last-child {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "name avatar"
      "score avatar"
      "streak streak";
  }

  .arena-player small { display: none; }
  .arena-player strong { font-size: 0.84rem; line-height: 1.2; }
  .arena-player-avatar { width: 34px; height: 34px; font-size: 0.95rem; box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.24); }
  .arena-score { font-size: 1.25rem; }
  .arena-matchup { padding: 5px 8px; font-size: 0.6rem; letter-spacing: 0.1em; }
  .arena-streak { margin-top: 2px; }
  .arena-streak b { display: none; }
  .arena-streak-pips i { width: 10px; height: 4px; }

  .arena-round-meta { margin-bottom: 8px; }
  .arena-timer { font-size: 1.2rem; padding: 6px 14px; }
  .arena-progress { gap: 3px; margin-bottom: 12px; }
  .arena-progress span { height: 5px; }

  .arena-question { padding: 18px 15px; border-radius: 18px; }
  .arena-question h2 { font-size: 1.25rem; margin-bottom: 14px; }
  .arena-stem { font-size: 0.95rem; line-height: 1.55; }
  .arena-question-media { padding: 8px; }
  .arena-question-media img { max-height: 240px; }

  .arena-option {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
    padding: 12px 14px;
    font-size: 0.93rem;
  }
  .arena-option > span:not(.arena-option-result) { align-items: flex-start; }
  .arena-option-letter { margin-top: 1px; }
  .arena-option-result { justify-self: start; margin-left: 42px; }

  .arena-game-actions { margin-top: 14px; }
  .arena-game-actions .arena-button { width: 100%; }
  .arena-exit .arena-button { width: auto; }

  .arena-social { padding: 13px; border-radius: 16px; }
  .arena-feed-list { max-height: 132px; }
  .arena-chat-composer { gap: 7px; }
  .arena-chat-composer .arena-button { width: auto; padding: 13px 18px; }

  .arena-stage-head { gap: 10px; margin-bottom: 14px; }
  .arena-room-code { font-size: 1.05rem; letter-spacing: 0.16em; padding: 9px 14px; }
  .arena-entry-grid, .arena-recap-grid { grid-template-columns: 1fr; }
  .arena-waiting { padding: 24px 14px; }
  .arena-recap-card strong { font-size: 2rem; }
}

/* Very narrow phones: the reaction row is the first thing that should give. */
@media (max-width: 380px) {
  .arena-icon-action { min-width: 42px; min-height: 44px; padding: 0 8px; font-size: 1.05rem; }
  .arena-player strong { font-size: 0.78rem; }
  .arena-score { font-size: 1.1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .arena-button,
  .arena-icon-action,
  .arena-connection-dot,
  .arena-waiting-orbit,
  .arena-match-status i,
  .arena-timer,
  .arena-moment,
  .arena-board::after,
  .arena-momentum-fill,
  .arena-score-pop {
    animation: none !important;
    transition: none !important;
  }
  /* A burst with no motion would sit frozen on the board, so it does not show. */
  .arena-burst { display: none; }
  .arena-score-pop { opacity: 1; transform: none; }
  .arena-button:hover:not(:disabled) { transform: none; }
  .arena-icon-action:hover:not(:disabled) { transform: none; }
  .arena-moment.is-showing { opacity: 1; transform: translate(-50%, -50%); }
  .arena-board.is-correct-pulse::after,
  .arena-board.is-wrong-pulse::after,
  .arena-board.is-round-pulse::after,
  .arena-board.is-complete-pulse::after { opacity: 0; }
}

/* Keep room setup close to the learner's first action. */
.arena-advanced { border-top: 1px solid #e1e7e5; border-bottom: 1px solid #e1e7e5; margin: 8px 0 16px; }
.arena-advanced > summary { padding: 12px 0; min-height: 44px; cursor: pointer; font-weight: 600; }
.arena-advanced .arena-rules-grid { margin-top: 16px; }
@media (max-width: 640px) { body.arena-page .arena-main { padding: 20px 16px 36px; width: 100%; } .arena-kicker, .arena-board-label { text-transform: none; letter-spacing: 0; } .arena-setup-copy { margin-bottom: 16px; } }