.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  aspect-ratio: 1;
  max-width: 380px;
  margin: 0 auto 22px;
  padding: 16px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 32px;
  box-shadow: 0 0 80px 4px color-mix(in srgb, var(--accent) 13%, transparent);
}

.cell {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  transition: background 0.15s, border-color 0.15s, transform 0.12s, box-shadow 0.15s;
}

.cell.active {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 38px color-mix(in srgb, var(--accent) 62%, transparent);
  animation: cell-appear 0.22s ease-out;
}

.cell.feedback-good {
  background: color-mix(in srgb, var(--good) 42%, transparent);
  border-color: var(--good);
  box-shadow: 0 0 28px color-mix(in srgb, var(--good) 45%, transparent);
}

.cell.feedback-bad {
  background: color-mix(in srgb, var(--bad) 42%, transparent);
  border-color: var(--bad);
  box-shadow: 0 0 28px color-mix(in srgb, var(--bad) 40%, transparent);
}

.match-btn {
  font-size: 18px;
  letter-spacing: 1px;
}

.match-btn.pressed {
  transform: scale(0.97);
  opacity: 0.85;
}