.tower-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 286px;
  align-items: start;
  gap: 18px;
}

.tower-arena {
  width: 100%;
  border: 1px solid rgba(31, 35, 40, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.52);
  overflow: hidden;
  box-shadow: 0 24px 70px rgba(31, 35, 40, 0.16);
}

.tower-arena canvas {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  touch-action: none;
}

.tower-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.tower-card {
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
}

.tower-card strong {
  font-size: 1.1rem;
}

.tower-card span {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.35;
}

@media (max-width: 820px) {
  .tower-shell {
    grid-template-columns: 1fr;
  }

  .tower-panel {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    align-items: start;
  }
}

@media (max-width: 560px) {
  .tower-panel {
    grid-template-columns: 1fr;
  }
}