html, body { min-height: 100vh }
* { box-sizing: border-box; }

/* Loading Overlay */
.loading-container {
    width: 100%;
    min-height: 100%;
    position: fixed;
    z-index: 9999;
    background-color: rgb(244, 244, 244);
    display: -webkit-flex;
    display: flex;
    align-items: center;
    justify-content: center;
}

.content-circle {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    background: #FAFAFA;
    border-radius: 50%;
    box-shadow: 0 0 8px #ddd;
}

.content-circle .circle1 {
    background-color: rgba(0, 0, 0, 0);
    border: 7px solid #424242;
    opacity: 0.9;
    border-top: 8px solid rgba(0, 0, 0, 0);
    border-left: 8px solid rgba(0, 0, 0, 0);
    border-radius: 50px;
    position: relative;
    width: 100%;
    height: 100%;
    animation: spin 1s infinite linear;
    box-sizing: border-box;
}

.content-circle .circle2 {
    background-color: rgba(0, 0, 0, 0);
    border: 6px solid cornflowerblue;
    opacity: 0.9;
    border-top: 7px solid rgba(0, 0, 0, 0);
    border-left: 7px solid rgba(0, 0, 0, 0);
    border-radius: 50px;
    width: 45px;
    height: 45px;
    margin: 0 auto;
    position: relative;
    top: -63px;
    animation: spinoff 0.8s infinite linear;
    box-sizing: border-box;
}

@keyframes spin {
    0% { 
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}
@keyframes spinoff {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(-360deg);
    }
}