:root {
  --accent: #2b4c8c;
  --accent-dark: #1e3a6f;
  --wash: #cfe8d3;
}

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

.word-progress {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.word-card {
  position: relative;
  display: grid;
  overflow: hidden;
  width: 100%;
  min-height: min(39vh, 350px);
  min-height: min(39dvh, 350px);
  padding: 28px;
  border: 2px solid color-mix(in srgb, var(--accent) 18%, transparent);
  border-radius: 34px;
  background:
    radial-gradient(circle at 92% 8%, rgba(255, 255, 255, 0.72) 0 4.8rem, transparent 4.9rem),
    linear-gradient(145deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.22)),
    var(--wash);
  box-shadow: var(--shadow);
  color: var(--accent-dark);
  cursor: pointer;
  place-items: center;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: transform 160ms ease, border-color 160ms ease;
}

.word-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 38%, transparent);
}

.word-card:active {
  transform: scale(0.99);
}

.word-card.is-playing {
  border-color: var(--accent);
}

.sight-word {
  display: flex;
  align-items: baseline;
  justify-content: center;
  max-width: 100%;
  font-family: "Nunito", sans-serif;
  font-size: clamp(4.5rem, 20vw, 9.5rem);
  font-variant-ligatures: none;
  font-weight: 900;
  letter-spacing: -0.055em;
  line-height: 0.9;
  overflow-wrap: anywhere;
}

.sight-letter {
  display: inline-grid;
  min-width: 0.68em;
  border-radius: 0.2em;
  place-items: center;
  transition: background-color 90ms ease, color 90ms ease, transform 90ms ease;
}

.sight-letter.is-active {
  background: #fff2a8;
  color: #132e60;
  transform: translateY(-0.035em) scale(1.08);
}

.sight-word.is-long {
  font-size: clamp(3rem, 13vw, 6rem);
}

.sight-word.is-very-long {
  font-size: clamp(2.45rem, 10vw, 4.75rem);
}

.sight-word.is-changing {
  animation: word-pop 240ms cubic-bezier(0.2, 0.85, 0.35, 1.15);
}

.card-audio-hint {
  position: absolute;
  right: 16px;
  bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--accent-dark);
  font-size: 0.74rem;
  font-weight: 800;
}

.word-controls {
  display: grid;
  width: 100%;
  grid-template-columns: 52px minmax(0, 1fr) 52px;
  gap: 10px;
  margin-top: 14px;
}

.word-control {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
  border-radius: 17px;
  background: var(--surface);
  color: var(--accent-dark);
  cursor: pointer;
  font-weight: 800;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.word-control:hover {
  border-color: var(--accent);
}

.word-control:active {
  transform: scale(0.97);
}

.word-control--hear {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
}

.word-control--hear:disabled {
  cursor: wait;
  opacity: 0.76;
}

.control-arrow {
  font-size: 1.35rem;
  line-height: 1;
}

@keyframes word-pop {
  from {
    opacity: 0;
    transform: scale(0.82) translateY(6px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

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

  .word-card {
    min-height: min(36dvh, 300px);
    border-radius: 28px;
  }

  .sight-word {
    font-size: clamp(3.9rem, 20vw, 7.2rem);
  }
}

@media (max-height: 620px) {
  .word-card {
    min-height: 230px;
  }

  .word-controls {
    margin-top: 10px;
  }
}