/* ===== MAKE TEN ===== */
.mten-num-tiles {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
}
.mten-tile {
  width: 64px;
  height: 64px;
  background: var(--primary);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.9rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.15s;
  box-shadow: 0 4px 16px rgba(139,92,246,0.4);
  user-select: none;
}
.mten-tile.used {
  opacity: 0.2;
  cursor: default;
  transform: none !important;
  box-shadow: none;
}
.mten-tile:not(.used):active { transform: scale(0.88); }

.mten-expr-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 12px 10px;
  background: var(--card);
  border-radius: 16px;
  width: 100%;
  max-width: 380px;
  min-height: 72px;
  border: 1px solid var(--card-border);
}
.mten-nslot {
  width: 52px;
  height: 52px;
  background: rgba(139,92,246,0.1);
  border: 2px dashed rgba(139,92,246,0.3);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: rgba(255,255,255,0.3);
  transition: all 0.15s;
}
.mten-nslot.filled {
  background: rgba(139,92,246,0.22);
  border-style: solid;
  border-color: rgba(139,92,246,0.55);
  color: #fff;
}
.mten-oslot {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.07);
  border: 2px solid rgba(255,255,255,0.14);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.12s;
  color: rgba(255,255,255,0.65);
  user-select: none;
}
.mten-oslot:active { transform: scale(0.88); background: rgba(139,92,246,0.28); }
.mten-eq {
  font-size: 1.3rem;
  font-weight: 800;
  color: rgba(255,255,255,0.45);
}
.mten-result-val {
  font-size: 1.6rem;
  font-weight: 800;
  min-width: 52px;
  text-align: center;
  color: rgba(255,255,255,0.4);
  transition: color 0.2s;
}
.mten-result-val.correct { color: #4ade80; }
.mten-result-val.wrong   { color: #f87171; }

.mten-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}
.mten-message {
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
  min-height: 1.5em;
}
.mten-hint {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
  text-align: center;
}