/* Korean Ajumma — Daily Korean Challenge
   Warm cream / terracotta continuity with Day 001 prototype */

:root {
  --cream: #f7f1e8;
  --cream-deep: #efe4d4;
  --ink: #2c2118;
  --ink-soft: #5c4a3a;
  --terracotta: #c45c3e;
  --terracotta-deep: #a3462c;
  --clay: #d9a07a;
  --leaf: #5a7a52;
  --card: #fffaf4;
  --line: rgba(44, 33, 24, 0.12);
  --shadow: 0 12px 32px rgba(44, 33, 24, 0.08);
  --radius: 18px;
  --font-display: "Fraunces", "Song Myung", Georgia, serif;
  --font-body: "Noto Sans KR", "Source Sans 3", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(ellipse 120% 80% at 10% -10%, #fde8d4 0%, transparent 55%),
    radial-gradient(ellipse 90% 70% at 100% 0%, #e8dcc8 0%, transparent 50%),
    linear-gradient(180deg, var(--cream) 0%, var(--cream-deep) 100%);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.ka-shell {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 1.25rem 1rem 2.5rem;
}

.ka-top {
  margin-bottom: 1.35rem;
}

.ka-banner {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.95rem 1rem;
  border-radius: var(--radius);
  background:
    radial-gradient(ellipse 80% 120% at 0% 0%, #fff6ec 0%, transparent 55%),
    linear-gradient(180deg, #fffaf4 0%, #f3e6d8 100%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.ka-banner__logo {
  flex: 0 0 auto;
  width: 5.5rem;
  height: 5.5rem;
  border-radius: 50%;
  object-fit: contain;
  background: #fffaf4;
}

.ka-banner__copy {
  min-width: 0;
}

.ka-banner__brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 4.5vw, 2rem);
  font-weight: 700;
  line-height: 1.1;
}

.ka-banner__brand-ko {
  color: var(--terracotta);
}

.ka-banner__brand-aj {
  color: #3f5c3a;
}

.ka-banner__tagline {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.ka-banner__swap {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin: 0.45rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.ka-banner__swap strong {
  font-weight: 700;
}

.ka-post-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 0.4rem;
  color: var(--ink);
}

.ka-series {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--terracotta);
}

.ka-brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin-bottom: 1.25rem;
}

.ka-brand__day {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--terracotta);
  font-weight: 600;
}

.ka-brand__name {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5vw, 2.4rem);
  font-weight: 650;
  line-height: 1.1;
  color: var(--ink);
  margin: 0;
}

.ka-brand__tag {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0.35rem 0 0;
}

@media (max-width: 520px) {
  .ka-banner {
    flex-direction: column;
    text-align: center;
  }

  .ka-banner__swap {
    align-items: center;
  }
}

.ka-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.15rem 1.4rem;
}

.ka-section-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0 0 0.35rem;
}

.ka-lead {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.ka-word-grid {
  display: grid;
  /* Mobile-first: always 2 columns so ~360–430px never collapses to 1 */
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0 0 1.4rem;
  padding: 0;
  list-style: none;
}

@media (min-width: 560px) {
  .ka-word-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
  }
}

.ka-word {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.75rem 0.7rem;
  border-radius: 14px;
  background: linear-gradient(160deg, #fff 0%, #f8efe4 100%);
  border: 1px solid var(--line);
}

.ka-word__emoji {
  font-size: 1.35rem;
  line-height: 1;
}

.ka-word__ko {
  font-size: 1.15rem;
  font-weight: 700;
}

.ka-word__rom {
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.ka-word__en {
  font-size: 0.88rem;
  color: var(--terracotta-deep);
  font-weight: 600;
}

.ka-expr-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
}

.ka-expr {
  padding: 0.85rem 0.9rem;
  border-left: 3px solid var(--terracotta);
  background: rgba(196, 92, 62, 0.06);
  border-radius: 0 12px 12px 0;
}

.ka-expr__ko {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
}

.ka-expr__rom {
  margin: 0.15rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.ka-expr__en {
  margin: 0.25rem 0 0;
  font-weight: 600;
  color: var(--terracotta-deep);
}

.ka-play-wrap {
  margin-top: 1.5rem;
}

.ka-play-wrap iframe {
  width: 100%;
  min-height: 520px;
  border: 0;
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
}

.ka-footer {
  margin-top: 1.75rem;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.ka-comment {
  margin-top: 1.25rem;
  padding: 1rem;
  border-radius: 14px;
  background: rgba(90, 122, 82, 0.1);
  border: 1px solid rgba(90, 122, 82, 0.22);
}

.ka-comment h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.35rem;
}

.ka-comment p {
  margin: 0;
  color: var(--ink-soft);
}

/* —— Challenge engine UI —— */

.challenge-body {
  min-height: 100vh;
  padding: 0.75rem 0.75rem 1.5rem;
}

/* Blogger / parent iframe: avoid 100vh forcing a second scrollbar */
html.is-embedded,
html.is-embedded body,
body.challenge-body.is-embedded {
  min-height: 0;
  height: auto;
}

body.challenge-body.is-embedded {
  padding: 0.45rem 0.55rem 0.85rem;
}

/* Parent Blogger page scrolls; iframe content should not scroll internally */
html.is-embedded,
html.is-embedded body {
  overflow-x: hidden;
  overflow-y: hidden;
}

body.challenge-body.is-embedded .challenge-shell {
  width: min(560px, 100%);
}

body.challenge-body.is-embedded .challenge-card,
body.challenge-body.is-embedded .challenge-start {
  padding: 0.85rem 0.8rem 1rem;
}

body.challenge-body.is-embedded .challenge-review {
  margin: 0.65rem 0 0.75rem;
  padding: 0.7rem 0.75rem 0.8rem;
}

body.challenge-body.is-embedded .challenge-review__story {
  margin: 0 0 0.65rem;
  font-size: 0.9rem;
  line-height: 1.45;
}

body.challenge-body.is-embedded .challenge-review__heading {
  margin: 0 0 0.35rem;
  font-size: 1.15rem;
}

body.challenge-body.is-embedded .challenge-review__title {
  margin: 0.2rem 0 0.4rem;
  font-size: 1rem;
}

body.challenge-body.is-embedded .challenge-review__words {
  margin: 0 0 0.65rem;
  gap: 0.4rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 560px) {
  body.challenge-body.is-embedded .challenge-review__words {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.55rem;
  }
}

body.challenge-body.is-embedded .challenge-review__word {
  padding: 0.5rem 0.5rem 0.55rem;
}

body.challenge-body.is-embedded .challenge-review__exprs {
  gap: 0.4rem;
}

body.challenge-body.is-embedded .challenge-review__expr {
  padding: 0.5rem 0.55rem;
}

body.challenge-body.is-embedded .challenge-review__audio-note,
body.challenge-body.is-embedded .ka-lead {
  margin: 0.35rem 0;
  font-size: 0.85rem;
}

body.challenge-body.is-embedded .challenge-header {
  margin-bottom: 0.55rem;
}

body.challenge-body.is-embedded .challenge-progress {
  margin-bottom: 0.65rem;
}

.challenge-shell {
  width: min(560px, 100%);
  margin: 0 auto;
}

.challenge-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.challenge-header h1 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0;
}

.challenge-progress-meta {
  font-size: 0.8rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

.challenge-progress {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.challenge-progress span {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: rgba(44, 33, 24, 0.12);
  transition: background 0.25s ease, transform 0.2s ease;
}

.challenge-progress span.done {
  background: var(--leaf);
}

.challenge-progress span.current {
  background: var(--terracotta);
  transform: scaleY(1.35);
}

.challenge-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.15rem 1rem 1.25rem;
  animation: rise-in 0.35s ease both;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.challenge-type {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--terracotta);
  margin-bottom: 0.45rem;
}

.challenge-prompt {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
}

.challenge-prompt-ko {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 6vw, 2.3rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.2rem;
  text-align: center;
}

.challenge-prompt-rom {
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0 0 1rem;
}

.challenge-options {
  display: grid;
  gap: 0.55rem;
}

.challenge-option {
  width: 100%;
  text-align: left;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  border: 1.5px solid var(--line);
  background: #fff;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 600;
  transition:
    border-color 0.15s ease,
    background 0.15s ease,
    transform 0.12s ease;
  min-height: 48px;
}

.challenge-option:hover:not(:disabled) {
  border-color: var(--clay);
  transform: translateY(-1px);
}

.challenge-option:active:not(:disabled) {
  transform: translateY(0);
}

.challenge-option:focus-visible {
  outline: 2px solid var(--terracotta);
  outline-offset: 2px;
}

.challenge-option.is-correct {
  border-color: var(--leaf);
  background: rgba(90, 122, 82, 0.14);
}

.challenge-option.is-wrong {
  border-color: var(--terracotta);
  background: rgba(196, 92, 62, 0.12);
}

.challenge-option:disabled {
  cursor: default;
  opacity: 0.95;
}

.challenge-feedback {
  margin-top: 0.95rem;
  padding: 0.9rem 0.95rem;
  border-radius: 14px;
  animation: rise-in 0.3s ease both;
}

.challenge-feedback.ok {
  background: rgba(90, 122, 82, 0.12);
  border: 1px solid rgba(90, 122, 82, 0.28);
}

.challenge-feedback.bad {
  background: rgba(196, 92, 62, 0.1);
  border: 1px solid rgba(196, 92, 62, 0.25);
}

.challenge-feedback__status {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 0.35rem;
}

.challenge-feedback.ok .challenge-feedback__status {
  color: var(--leaf);
}

.challenge-feedback.bad .challenge-feedback__status {
  color: var(--terracotta-deep);
}

.challenge-feedback__ko {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0;
}

.challenge-feedback__rom {
  margin: 0.1rem 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.challenge-feedback__en {
  margin: 0.25rem 0 0;
  font-weight: 600;
  color: var(--terracotta-deep);
}

.challenge-next {
  display: block;
  width: 100%;
  margin-top: 0.85rem;
  padding: 0.85rem 1rem;
  border-radius: 999px;
  background: var(--terracotta);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  transition: background 0.15s ease, transform 0.12s ease;
}

.challenge-next:hover {
  background: var(--terracotta-deep);
}

.challenge-next:active {
  transform: scale(0.98);
}

.challenge-start,
.challenge-result {
  text-align: center;
}

.challenge-start .ka-lead,
.challenge-result .ka-lead {
  margin-bottom: 0.75rem;
}

.challenge-review {
  text-align: left;
  margin: 1rem 0 1.15rem;
  padding: 0.95rem 1rem 1.1rem;
  border-radius: 14px;
  background: rgba(44, 33, 24, 0.04);
  border: 1px solid var(--line);
}

.challenge-review__heading {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--ink);
}

.challenge-review__story {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.55;
}

.challenge-review__title {
  margin: 0.35rem 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--ink);
}

.challenge-review__title:first-child {
  margin-top: 0;
}

.challenge-review__words {
  list-style: none;
  margin: 0 0 0.95rem;
  padding: 0;
  display: grid;
  /* Mobile-first 2-col — auto-fill+140px was collapsing to 1 col in narrow iframes */
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}

@media (min-width: 560px) {
  .challenge-review__words {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem;
  }
}

.challenge-review__word {
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
  padding: 0.65rem 0.6rem 0.7rem;
  border-radius: 12px;
  background: #fff;
  border: 1px solid var(--line);
  position: relative;
}

.challenge-review__word-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
  margin-bottom: 0.15rem;
}

.challenge-review__emoji {
  font-size: 1.25rem;
  line-height: 1;
}

.challenge-review__ko {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
}

.challenge-review__rom {
  font-size: 0.75rem;
  color: var(--ink-soft);
  margin: 0;
}

.challenge-review__en {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--terracotta-deep);
  margin: 0;
}

.challenge-review__exprs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.challenge-review__expr {
  padding: 0.65rem 0.7rem;
  border-radius: 0 12px 12px 0;
  border-left: 3px solid var(--terracotta);
  background: rgba(196, 92, 62, 0.06);
}

.challenge-review__expr-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.65rem;
}

.challenge-review__expr-text {
  min-width: 0;
  flex: 1;
}

.ka-speak-btn {
  flex: 0 0 auto;
  position: relative;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  background: #fffaf4;
  color: var(--terracotta-deep);
  box-shadow: 0 2px 8px rgba(44, 33, 24, 0.06);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.12s ease;
}

.ka-speak-btn:hover {
  border-color: var(--clay);
}

.ka-speak-btn:active {
  transform: scale(0.96);
}

.ka-speak-btn:focus-visible {
  outline: 2px solid var(--terracotta);
  outline-offset: 2px;
}

.ka-speak-btn.is-playing {
  border-color: var(--terracotta);
  background: rgba(196, 92, 62, 0.12);
  color: var(--terracotta-deep);
  animation: ka-speak-pulse 0.9s ease-in-out infinite;
}

.ka-speak-btn__icon {
  font-size: 1.15rem;
  line-height: 1;
}

.ka-speak-btn__status {
  position: absolute;
  left: 50%;
  top: calc(100% + 0.2rem);
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--terracotta-deep);
  background: #fffaf4;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.12rem 0.4rem;
  z-index: 2;
  pointer-events: none;
}

.ka-speak-btn__status[hidden] {
  display: none !important;
}

@keyframes ka-speak-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(196, 92, 62, 0.35);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(196, 92, 62, 0);
    transform: scale(1.05);
  }
}

.challenge-review__audio-note,
.ka-audio-note {
  margin: 0.85rem 0 0;
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--ink-soft);
}

.ka-word__top,
.ka-expr__row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.4rem;
}

.ka-word .ka-speak-btn {
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
}

.ka-expr .ka-speak-btn {
  margin-top: 0.1rem;
}

.challenge-start-btn,
.challenge-again-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 180px;
  padding: 0.9rem 1.4rem;
  border-radius: 999px;
  background: var(--terracotta);
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  transition: background 0.15s ease, transform 0.12s ease;
}

.challenge-start-btn:hover,
.challenge-again-btn:hover {
  background: var(--terracotta-deep);
}

.challenge-score {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 8vw, 3.2rem);
  font-weight: 700;
  margin: 0.4rem 0 0.35rem;
  color: var(--ink);
}

.challenge-missed {
  text-align: left;
  margin: 1rem 0 0;
  padding: 0.85rem 0.9rem;
  border-radius: 12px;
  background: rgba(44, 33, 24, 0.04);
  border: 1px solid var(--line);
}

.challenge-missed h3 {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
}

.challenge-missed ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.challenge-missed li {
  font-size: 0.92rem;
}

.challenge-missed strong {
  font-weight: 700;
}

/* —— Memory match cards —— */

.challenge-shell--wide {
  width: min(640px, 100%);
}

.memory-hint {
  margin: -0.35rem 0 0.85rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.memory-status {
  margin: 0 0 0.85rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.memory-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.memory-card {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 3.4;
  min-height: 96px;
  padding: 0;
  border-radius: 16px;
  perspective: 900px;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.memory-card__inner {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.35s ease;
}

.memory-card.is-flipped .memory-card__inner,
.memory-card.is-matched .memory-card__inner {
  transform: rotateY(180deg);
}

.memory-card__face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  border-radius: 16px;
  border: 1.5px solid var(--line);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow: 0 6px 16px rgba(44, 33, 24, 0.06);
}

.memory-card__back {
  background:
    radial-gradient(circle at 50% 45%, #fff6ec 0%, #f3e2d0 55%, #e8d2bc 100%);
  color: var(--ink);
  overflow: hidden;
}

.memory-card__logo {
  width: 86%;
  height: 86%;
  max-width: 6.25rem;
  max-height: 6.25rem;
  object-fit: cover;
  border-radius: 50%;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
  box-shadow: 0 0 0 2px rgba(255, 250, 244, 0.65);
}

.memory-card__front {
  background: #fff;
  transform: rotateY(180deg);
  color: var(--ink);
}

.memory-card.is-matched .memory-card__front {
  border-color: var(--leaf);
  background: rgba(90, 122, 82, 0.12);
  box-shadow: 0 0 0 2px rgba(90, 122, 82, 0.25);
}

.memory-card__emoji {
  font-size: clamp(1.8rem, 7vw, 2.4rem);
  line-height: 1;
}

.memory-card__emoji.is-bundle {
  font-size: clamp(1.15rem, 4.2vw, 1.45rem);
  letter-spacing: -0.06em;
  line-height: 1.15;
  text-align: center;
  max-width: 100%;
  padding: 0 0.15rem;
}

.memory-card__en {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink-soft);
  text-transform: lowercase;
}

.memory-card__ko {
  font-size: clamp(1.15rem, 4.5vw, 1.45rem);
  font-weight: 800;
  line-height: 1.2;
}

.memory-card__rom {
  font-size: 0.75rem;
  color: var(--ink-soft);
}

.memory-card:not(:disabled):active .memory-card__inner {
  transform: scale(0.97);
}

.memory-card.is-flipped:not(:disabled):active .memory-card__inner,
.memory-card.is-matched:active .memory-card__inner {
  transform: rotateY(180deg) scale(0.99);
}

.memory-card:focus-visible {
  outline: 2px solid var(--terracotta);
  outline-offset: 3px;
}

.memory-feedback {
  margin-top: 0.85rem;
}

.memory-done {
  margin-top: 0.95rem;
  text-align: center;
}

.challenge-success-art {
  display: block;
  width: min(220px, 70%);
  height: auto;
  margin: 0.15rem auto 0.75rem;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(44, 33, 24, 0.12);
  background: #fffaf4;
}

.challenge-result .challenge-success-art {
  margin-top: 0.25rem;
  margin-bottom: 0.85rem;
}

.memory-done .challenge-feedback__status {
  text-align: center;
}

@media (max-width: 480px) {
  .ka-shell {
    padding: 0.85rem 0.55rem 1.35rem;
  }

  .challenge-body {
    padding: 0.45rem 0.4rem 0.85rem;
  }

  body.challenge-body.is-embedded {
    padding: 0.35rem 0.3rem 0.65rem;
  }

  .challenge-shell {
    width: 100%;
  }

  .challenge-card,
  .challenge-start,
  body.challenge-body.is-embedded .challenge-card,
  body.challenge-body.is-embedded .challenge-start {
    padding: 0.7rem 0.55rem 0.85rem;
  }

  .challenge-review,
  body.challenge-body.is-embedded .challenge-review {
    margin: 0.45rem 0 0.55rem;
    padding: 0.55rem 0.5rem 0.6rem;
  }

  .challenge-review__story,
  body.challenge-body.is-embedded .challenge-review__story {
    margin: 0 0 0.5rem;
    font-size: 0.9rem;
    line-height: 1.45;
  }

  .challenge-review__words,
  .ka-word-grid,
  body.challenge-body.is-embedded .challenge-review__words {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.4rem;
    margin-bottom: 0.65rem;
  }

  .challenge-review__word,
  .ka-word,
  body.challenge-body.is-embedded .challenge-review__word {
    padding: 0.45rem 0.4rem 0.5rem;
    gap: 0.08rem;
  }

  .challenge-review__ko,
  .ka-word__ko {
    font-size: 1.02rem; /* keep Korean readable — do not shrink further */
  }

  .challenge-review__en,
  .ka-word__en {
    font-size: 0.82rem;
  }

  .challenge-review__rom,
  .ka-word__rom {
    font-size: 0.72rem;
  }

  .ka-speak-btn,
  .challenge-review__word .ka-speak-btn,
  .ka-word .ka-speak-btn {
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
  }

  .challenge-review__exprs,
  body.challenge-body.is-embedded .challenge-review__exprs {
    gap: 0.35rem;
  }

  .challenge-review__expr,
  body.challenge-body.is-embedded .challenge-review__expr {
    padding: 0.45rem 0.45rem;
  }

  .challenge-header {
    margin-bottom: 0.45rem;
  }

  .challenge-progress {
    margin-bottom: 0.55rem;
  }

  .ka-lead,
  .challenge-review__audio-note {
    margin: 0.3rem 0;
  }

  .challenge-option {
    font-size: 1rem;
  }

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

  .memory-card {
    min-height: 84px;
    border-radius: 14px;
  }

  .memory-card__face {
    border-radius: 14px;
  }
}

@media (min-width: 560px) {
  .memory-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.75rem;
  }
}