Dark Mode (다크 모드)

/* Cals Dark Mode (예상) */
:root[data-theme="dark"] {
  /* Primary (Pink) - 밝기 조정 */
  --color-cals-primary-500: #f06292;
 
  /* Secondary (Blue) - 밝기 조정 */
  --color-cals-secondary-500: #4fc3f7;
 
  /* Accent (Purple) - 밝기 조정 */
  --color-cals-accent-500: #ba68c8;
 
  /* Booking Status - 다크 모드 변환 */
  --color-booking-available: #66bb6a;
  --color-booking-pending: #ffa726;
  --color-booking-confirmed: #29b6f6;
  --color-booking-cancelled: #ef5350;
  --color-booking-completed: #ab47bc;
 
  /* Background */
  --color-bg-default: #171717;
  --color-bg-paper: #262626;
}