/* Loading Spinner Styles */
.btn-loading {
    position: relative;
    cursor: not-allowed;
}

.btn-loading .btn-text {
    visibility: hidden;
    opacity: 0;
}

.btn-loading .spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #ffffff;
    animation: spin 1s ease-in-out infinite;
    display: none;
}

.btn-loading .spinner {
    display: block;
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}