/* ===== MENTAL NAV (メンタルナビ) ===== */

.mn-instructions-wrap {
  width: 100%;
  max-width: 400px;
  background: var(--card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px 16px;
  margin: 8px 0;
  box-sizing: border-box;
  text-align: center;
}

.mn-instructions-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.mn-instructions {
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.1em;
  line-height: 1.5;
  word-break: break-all;
}

.mn-grid-wrap {
  width: 100%;
  max-width: 340px;
  margin: 10px 0;
}

.mn-grid {
  display: grid;
  gap: 6px;
  width: 100%;
}

.mn-cell {
  aspect-ratio: 1;
  background: var(--card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: background 0.12s, transform 0.1s, border-color 0.2s;
  box-sizing: border-box;
}

.mn-cell:hover {
  background: rgba(255,255,255,0.12);
  transform: scale(1.05);
}

.mn-cell:active {
  transform: scale(0.93);
}

.mn-cell-start {
  color: var(--primary);
  font-size: 1rem;
  border-color: rgba(139, 92, 246, 0.5);
}

.mn-cell-correct {
  background: rgba(16, 185, 129, 0.35) !important;
  border-color: var(--accent) !important;
  color: var(--accent) !important;
  animation: mnCellPop 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.mn-cell-wrong {
  background: rgba(236, 72, 153, 0.35) !important;
  border-color: var(--secondary) !important;
  color: var(--secondary) !important;
}

@keyframes mnCellPop {
  0%   { transform: scale(0.85); }
  60%  { transform: scale(1.1); }
  100% { transform: scale(1); }
}