.mn-mine {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  aspect-ratio: 3 / 2;
  border-radius: 20px;
  border: 2px solid rgba(255, 223, 128, 0.4);
  background: radial-gradient(circle at 50% 40%, rgba(255, 214, 102, 0.25), rgba(40, 30, 12, 0.85));
  color: #ffe9b0;
  font-size: 1.3rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.06s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.3rem;
}
.mn-mine:active {
  transform: scale(0.97);
}
.mn-mine span {
  font-size: 2.4rem;
}

.mn-upgrades {
  display: grid;
  gap: 0.5rem;
}

.mn-upgrade {
  text-align: left;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  color: #ffe9c9;
  padding: 0.7rem 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.1s ease;
}
.mn-upgrade:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: rgba(255, 214, 102, 0.5);
}
.mn-upgrade:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.mn-upgrade__title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.2rem;
}
.mn-upgrade__cost {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.82rem;
  color: #ffd166;
  font-weight: 700;
}