/* 로딩 오버레이 스타일 */
#loadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #ffffff;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 로더 스타일 */
.loader {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(0deg, #007bff 0%, #00d4ff 100%);
    position: relative;
    animation: rotate 1.5s linear infinite;
}

/* 내부 원 */
.loader::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 6px;
    right: 6px;
    bottom: 6px;
    background-color: #ffffff;
    border-radius: 50%;
}

/* 애니메이션 효과 */
@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@media (prefers-color-scheme: dark) {
    #loadingOverlay {
        background-color: #000000;
    }

    .loader::before {
        background-color: #000000;
    }
}

.navbar-nav .nav-link:hover {
    color: #0056b3;
}