.theme-toggle {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 5px var(--color-shadow);
}

.theme-toggle:hover {
  transform: scale(1.1);
}