.memory-page {
  text-align: center;
  padding-top: 20px;
}

.memory-page h2 {
  color: var(--gold);
  margin-bottom: 20px;
}

.memory-controls {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.difficulty-btn {
  padding: 10px 24px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 2px solid var(--glass-border);
  color: var(--white);
  font-size: 1rem;
  font-weight: 700;
  transition: all var(--transition-med);
  min-height: var(--touch-min);
}

.difficulty-btn:hover, .difficulty-btn.active {
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.1);
  color: var(--cyan);
}

.memory-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
  font-size: 1.1rem;
}

.memory-stats span {
  color: var(--white-dim);
}

.memory-stats .stat-value {
  color: var(--cyan);
  font-weight: 700;
  font-family: var(--font-display);
}

.memory-grid {
  display: grid;
  gap: 10px;
  max-width: 600px;
  margin: 0 auto 24px;
  perspective: 1000px;
}

.memory-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.memory-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.memory-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }

.memory-card {
  aspect-ratio: 1;
  cursor: pointer;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.5s ease;
}

.memory-card.flipped {
  transform: rotateY(180deg);
}

.memory-card.matched {
  transform: rotateY(180deg);
}

.memory-card.matched .memory-card-front,
.memory-card.matched .memory-card-back {
  border-color: var(--green);
  box-shadow: 0 0 15px var(--green-glow);
}

.memory-card-front, .memory-card-back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--glass-border);
}

.memory-card-front {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.15), rgba(0, 100, 180, 0.15));
  font-size: 2rem;
}

.memory-card-front::after {
  content: '?';
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--cyan);
  opacity: 0.6;
}

.memory-card-back {
  background: var(--glass-bg);
  transform: rotateY(180deg);
  font-size: clamp(2rem, 5vw, 3rem);
}

.memory-complete {
  padding: 30px;
  animation: bounceIn 0.6s ease;
}

.memory-complete-icon {
  font-size: 4rem;
  margin-bottom: 12px;
  display: block;
}

.memory-complete h3 {
  font-size: 1.8rem;
  margin-bottom: 8px;
  color: var(--gold);
}

.memory-stars {
  font-size: 2rem;
  margin-bottom: 12px;
  display: block;
}

.memory-complete p {
  color: var(--white-dim);
  margin-bottom: 4px;
}

.memory-best-time {
  color: var(--cyan);
  font-weight: 700;
}

@media (max-width: 768px) {
  .memory-grid {
    max-width: 95%;
    gap: 6px;
  }

  .memory-card-back {
    font-size: 1.8rem;
  }
}