.brcg {
  --brcg-yellow: var(--br-color-brand-yellow, #f7e232);
  --brcg-yellow-deep: var(--br-color-brand-yellow-deep, #dbb918);
  --brcg-teal: var(--br-color-brand-teal, #52d9c7);
  --brcg-teal-deep: var(--br-color-brand-teal-deep, #24b8aa);
  --brcg-navy: var(--br-color-brand-navy, #1f2a44);
  --brcg-muted: #718199;
  width: min(100%, 920px);
  min-width: 0;
  margin: 0 auto;
  padding: 4px;
  color: var(--brcg-navy);
  font-family: var(--br-font-ui, "Arial Rounded MT Bold", "M PLUS Rounded 1c", system-ui, sans-serif);
}

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

.brcg__panel {
  width: 100%;
  min-width: 0;
  padding: clamp(12px, 4vw, 24px);
  padding-bottom: calc(96px + env(safe-area-inset-bottom));
  border: 1px solid rgba(31, 42, 68, 0.08);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(31, 42, 68, 0.1);
}

.brcg__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(10px, 3vw, 16px);
  align-items: stretch;
}

.brcg-card {
  position: relative;
  display: grid;
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 0;
  overflow: hidden;
  border: 3px solid transparent;
  border-radius: clamp(16px, 5vw, 22px);
  background: #fffdf0;
  box-shadow: 0 6px 0 var(--brcg-yellow-deep), 0 10px 22px rgba(31, 42, 68, 0.1);
  color: var(--brcg-navy);
  cursor: pointer;
  touch-action: manipulation;
  transition: border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.brcg-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: #fff;
}

.brcg-card__placeholder {
  display: grid;
  width: 100%;
  aspect-ratio: 1 / 1;
  place-items: center;
  background: #fffdf0;
  color: var(--brcg-teal-deep);
  font-size: clamp(2.5rem, 15vw, 5rem);
  font-weight: 950;
}

.brcg-card::before {
  content: "▶";
  position: absolute;
  right: 8px;
  bottom: 8px;
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: 50%;
  background: var(--brcg-teal);
  box-shadow: 0 3px 0 var(--brcg-teal-deep);
  color: var(--brcg-navy);
  font-size: 0.7rem;
  line-height: 1;
}

.brcg-card:hover {
  transform: translateY(-2px);
}

.brcg-card:active {
  box-shadow: 0 2px 0 var(--brcg-yellow-deep), 0 5px 12px rgba(31, 42, 68, 0.1);
  transform: translateY(4px);
}

.brcg-card:focus-visible {
  outline: 4px solid rgba(82, 217, 199, 0.7);
  outline-offset: 3px;
}

.brcg-card.is-heard {
  border-color: var(--brcg-teal);
}

.brcg-card.is-heard::before {
  content: "✓";
  font-size: 1rem;
  font-weight: 950;
}

.brcg-card.is-playing::before {
  content: "♪";
  animation: brcg-audio-pulse 700ms ease-in-out infinite alternate;
  font-size: 1rem;
  font-weight: 950;
}

.brcg__message {
  min-height: 1.6em;
  margin: 14px 4px 0;
  color: #b32838;
  font-size: 0.85rem;
  font-weight: 850;
  line-height: 1.6;
  text-align: center;
}

.brcg__message:empty {
  display: none;
}

.brcg__finish {
  position: fixed;
  z-index: 90;
  left: 50%;
  bottom: 0;
  display: grid;
  width: min(calc(100% - 24px), 640px);
  justify-items: center;
  margin: 0;
  padding: 10px 12px max(10px, env(safe-area-inset-bottom));
  border: 1px solid rgba(31, 42, 68, 0.1);
  border-bottom: 0;
  border-radius: 22px 22px 0 0;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 -10px 28px rgba(31, 42, 68, 0.12);
  text-align: center;
  transform: translateX(-50%);
  backdrop-filter: blur(14px);
}

.brcg__complete {
  width: min(100%, 430px);
  min-height: 56px;
  padding: 12px 16px;
  border: 0;
  border-radius: 18px;
  background: var(--brcg-teal);
  box-shadow: 0 6px 0 var(--brcg-teal-deep);
  color: var(--brcg-navy);
  font: inherit;
  font-size: clamp(0.9rem, 4vw, 1.05rem);
  font-weight: 950;
  line-height: 1.45;
  cursor: pointer;
  touch-action: manipulation;
}

.brcg .brcg__complete:not(:disabled),
.brcg .brcg__complete:hover:not(:disabled),
.brcg .brcg__complete:focus-visible:not(:disabled) {
  background: var(--brcg-teal);
  color: var(--brcg-navy);
}

.brcg__complete:active:not(:disabled) {
  box-shadow: 0 2px 0 var(--brcg-teal-deep);
  transform: translateY(4px);
}

.brcg__complete:focus-visible {
  outline: 4px solid rgba(36, 184, 170, 0.62);
  outline-offset: 4px;
}

.brcg__complete:disabled {
  box-shadow: 0 3px 0 #b9c6cf;
  background: #dce5e8;
  color: #78879a;
  cursor: not-allowed;
  opacity: 0.86;
  transform: translateY(3px);
}

.brcg.is-completing .brcg-card {
  pointer-events: none;
}

@media (min-width: 700px) {
  .brcg__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .brcg__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 359px) {
  .brcg {
    padding: 0;
  }

  .brcg__panel {
    padding: 10px;
    padding-bottom: calc(90px + env(safe-area-inset-bottom));
    border-radius: 20px;
  }

  .brcg__finish {
    width: calc(100% - 16px);
    padding-inline: 8px;
  }

  .brcg__grid {
    gap: 9px;
  }

  .brcg-card::before {
    right: 6px;
    bottom: 6px;
    width: 28px;
    height: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .brcg *,
  .brcg *::before,
  .brcg *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@keyframes brcg-audio-pulse {
  from { transform: scale(0.92); }
  to { transform: scale(1.08); }
}