/* Simple full-screen preloader */
.preloader {
    position: fixed;
    inset: 0;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader .spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.preloader .spinner img {
    width: 72px;
    height: 72px;
    object-fit: contain;
    margin-bottom: 12px;
    animation: pulse 1.2s ease-in-out infinite;
}

.preloader .spinner .lds-ring {
    display: inline-block;
    position: relative;
    width: 48px;
    height: 48px;
}

.preloader .spinner .lds-ring div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 40px;
    height: 40px;
    margin: 4px;
    border: 4px solid #007bff;
    border-radius: 50%;
    animation: lds-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-color: #007bff transparent transparent transparent;
}

.preloader .spinner .lds-ring div:nth-child(1) {
    animation-delay: -0.45s;
}

.preloader .spinner .lds-ring div:nth-child(2) {
    animation-delay: -0.3s;
}

.preloader .spinner .lds-ring div:nth-child(3) {
    animation-delay: -0.15s;
}

.hide {
    display: none !important;
}

@keyframes lds-ring {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}