.btn {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,.25) inset, 0 4px 12px rgba(0,0,0,.25);
  transition: transform .12s ease, background .2s ease, box-shadow .2s ease;
}

.btn:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.btn-secondary {
  background: rgba(255,255,255,0.04);
}