.board-wrap {
  position: relative;
  width: min(90vw, 400px);
  margin: 0 auto;
}

.board {
  display: grid;
  gap: 6px;
  width: 100%;
  aspect-ratio: 1;
  user-select: none;
}

.countdown-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 41, 0.55);
  backdrop-filter: blur(6px);
  border-radius: 12px;
  z-index: 5;
  pointer-events: none;
}

.countdown-overlay.hidden { display: none; }

.countdown-overlay span {
  font-size: clamp(4rem, 18vw, 6rem);
  font-weight: 900;
  color: var(--text);
  text-shadow: 0 4px 24px rgba(0,0,0,0.4);
  display: inline-block;
  animation: countPulse 0.8s ease-out;
}

@keyframes countPulse {
  0%   { transform: scale(1.6); opacity: 0; }
  30%  { transform: scale(1);   opacity: 1; }
  100% { transform: scale(1);   opacity: 1; }
}

.cell {
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.08s ease;
}

.cell:active { transform: scale(0.94); }

.cell.wrong {
  animation: shake 0.3s ease;
}

.cell.correct {
  animation: pulse 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.15); box-shadow: 0 0 24px currentColor; }
}

.hint {
  text-align: center;
  margin-top: 20px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* ===== 결과 모달 ===== */

.result-modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 41, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 50;
  animation: fadeIn 0.25s ease;
}

.result-modal.hidden { display: none; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.result-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 36px 28px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow);
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-emoji {
  font-size: 4rem;
  margin-bottom: 8px;
}

.result-card h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.result-msg {
  color: var(--text-dim);
  margin-bottom: 24px;
}

.result-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.result-stats > div {
  background: rgba(255,255,255,0.05);
  padding: 14px;
  border-radius: 12px;
}

.result-stats span {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.result-stats strong {
  font-size: 1.6rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.result-rank {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--accent);
}

.result-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 20px;
}

.result-actions .btn {
  padding: 12px 16px;
  text-align: center;
  font-size: 0.95rem;
}