.text-orange {
    color: #f15a29 !important;
}
.border-orange {
    border-color: #f15a29 !important;
}
.btn-orange {
    background-color: #f15a29;
    color: white;
}
.btn-orange:hover {
    background-color: #d94e23;
    color: white;
}
.btn-outline-orange {
    border: 1px solid #f15a29;
    color: #f15a29;
}
.btn-outline-orange:hover {
    background-color: #f15a29;
    color: white;
}
#main .loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}

#main .loading-overlay .spinner {
    width: 3rem;
    height: 3rem;
    border: 4px solid #fff;
    border-top: 4px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Hiệu ứng xoay */
@keyframes spin {
    0% {
        transform: rotate(0);
    }
    100% {
        transform: rotate(360deg);
    }
}