:root {
  --accent: #2b4c8c;
  --accent-dark: #1e3a6f;
  --wash: #dceae3;
}

.activity-copy {
  margin-bottom: 12px;
}

.reading-stage {
  display: flex;
  width: min(100%, 680px);
  min-height: 0;
  flex-direction: column;
  align-items: center;
}

.reading-progress {
  margin: 0 0 7px;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reading-card {
  display: flex;
  overflow: hidden;
  width: 100%;
  min-height: 0;
  flex-direction: column;
  border: 2px solid color-mix(in srgb, var(--accent) 18%, transparent);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.reading-picture-wrap {
  display: grid;
  min-height: min(27dvh, 240px);
  max-height: 240px;
  padding: 12px;
  background:
    radial-gradient(circle at 82% 14%, rgba(255, 255, 255, 0.8) 0 4rem, transparent 4.1rem),
    var(--wash);
  place-items: center;
}

.reading-picture {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 216px;
  object-fit: contain;
}

.reading-sentence {
  display: flex;
  min-height: 112px;
  flex-wrap: wrap;
  align-content: center;
  align-items: baseline;
  justify-content: center;
  gap: 4px 7px;
  padding: 14px 18px;
  color: var(--ink);
  font-family: "Nunito", sans-serif;
  font-size: clamp(2rem, 8.4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.12;
}

.sentence-word {
  min-height: 42px;
  padding: 2px 3px;
  border: 0;
  border-bottom: 3px solid transparent;
  border-radius: 7px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font: inherit;
  line-height: inherit;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.sentence-word:hover,
.sentence-word.is-selected {
  border-bottom-color: var(--accent);
  background: color-mix(in srgb, var(--wash) 46%, white);
  color: var(--accent-dark);
}

.sentence-word.is-playing {
  animation: word-pulse 650ms ease-in-out infinite alternate;
}

.sentence-punctuation {
  margin-left: -7px;
}

.word-help {
  display: grid;
  width: 100%;
  min-height: 82px;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px 14px;
  margin-top: 10px;
  padding: 10px 12px 10px 16px;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--line));
  border-radius: 20px;
  background: color-mix(in srgb, var(--wash) 34%, white);
  color: var(--accent-dark);
  text-align: left;
}

.word-help.is-idle {
  display: none;
}

.help-mode {
  grid-column: 1;
  margin: 0;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.help-breakdown {
  display: flex;
  grid-column: 1;
  align-items: center;
  gap: 7px;
  min-width: 0;
  font-family: "Nunito", sans-serif;
  font-size: clamp(1.15rem, 5vw, 1.55rem);
  font-weight: 900;
  line-height: 1;
}

.breakdown-part {
  display: inline-grid;
  min-width: 28px;
  min-height: 28px;
  padding-inline: 4px;
  border-radius: 8px;
  background: white;
  place-items: center;
  transition: background-color 90ms ease, color 90ms ease, transform 90ms ease;
}

.breakdown-part.is-active {
  background: #fff2a8;
  color: #132e60;
  transform: translateY(-2px) scale(1.08);
}

.breakdown-separator {
  color: var(--muted);
}

.breakdown-arrow {
  margin-inline: 2px;
  color: var(--muted);
}

.breakdown-word {
  overflow: hidden;
  text-overflow: ellipsis;
}

.hear-again {
  display: inline-flex;
  min-height: 48px;
  grid-column: 2;
  grid-row: 1 / span 2;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: 0;
  border-radius: 15px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-size: 0.76rem;
  font-weight: 800;
}

.hear-again:disabled {
  cursor: wait;
  opacity: 0.7;
}

.reading-controls {
  display: grid;
  width: 100%;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 10px;
}

.reading-control {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--line));
  border-radius: 16px;
  background: var(--surface);
  color: var(--accent-dark);
  cursor: pointer;
  font-weight: 800;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.reading-control--next {
  background: var(--accent);
  color: white;
}

@keyframes word-pulse {
  to { transform: translateY(-2px); }
}

@media (max-width: 699px) {
  .reading-stage {
    flex: 1;
    justify-content: center;
  }

  .reading-picture-wrap {
    min-height: min(24dvh, 205px);
  }

  .reading-sentence {
    min-height: 106px;
    padding: 10px 12px;
  }

  .word-help {
    min-height: 76px;
  }
}

@media (max-height: 680px) {
  .activity-copy {
    display: none;
  }

  .reading-picture-wrap {
    min-height: 150px;
    max-height: 170px;
  }

  .reading-picture {
    max-height: 146px;
  }

  .reading-sentence {
    min-height: 92px;
    font-size: 1.7rem;
  }

  .word-help {
    min-height: 68px;
    margin-top: 7px;
    padding-block: 7px;
  }

  .reading-controls {
    margin-top: 7px;
  }

  .reading-control {
    min-height: 44px;
  }
}