/* overlay-base.css — 모든 overlay의 공통 애니메이션 */
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}
@keyframes scaleIn {
    from { transform: scale(0.95); opacity: 0; }
    to   { transform: scale(1);    opacity: 1; }
}