:root{
    --main_size: 60;
    --sapphire_color: rgb(8 37 103);
    --sapphire_color_shine: rgb(39, 67, 132);
}

#preloader-container {
    text-align: center;
    padding: 20px;
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    z-index: 102;
    background: rgb(109 106 147 / 75%);
    backdrop-filter: blur(3px);
    
    &.visible{
        display: block;
    }

    &>#container__sapphire {
        position: relative;
        width: calc(var(--main_size) * 3px);
        height: calc(var(--main_size) * 3px);
        margin: 100px auto;

        &>#sapphire__upper-triangles-block {    
            position: absolute;
            top: 0;
            left: 0;
            z-index: 5;
        }

        & .triangle {
            position: absolute;
            width: 0;
            height: 0;
            filter: drop-shadow(0px 0px 3px #eac18a);
            transition: 0.5s;
            transition-duration: 0.5s;

            &.triangle--small {
                border-left: calc(var(--main_size) / 2 * 1px) solid transparent;
                border-right: calc(var(--main_size) / 2 * 1px) solid transparent;
                &:nth-of-type(2){
                   transform: translateX(calc(0px - (var(--main_size) * 1 / 2 * 1px))); 
                }
                &:nth-of-type(3){
                   transform: translateX(calc(0px - (var(--main_size) * 2 / 2 * 1px))); 
                }
                &:nth-of-type(4){
                   transform: translateX(calc(0px - (var(--main_size) * 3 / 2 * 1px)));  
                }
                &:nth-of-type(5){
                   transform: translateX(calc(0px - (var(--main_size) * 4 / 2 * 1px)));  
                }

                &.triangle-up {
                    border-bottom: calc(var(--main_size) * 1px) solid var(--sapphire_color);

                    &>.triangle-text {
                        bottom: calc(0px - var(--main_size) * 0.9px);
                        left: calc(0px - var(--main_size) * 0.05px);
                    }
                }

                &.triangle-down {
                    border-top: calc(var(--main_size) * 1px) solid var(--sapphire_color);

                    &>.triangle-text {
                        bottom: calc(var(--main_size) * 0.4px);
                        left: calc(0px - var(--main_size) * 0.05px);
                    }
                }
            }

            &>.triangle-text {
                visibility: hidden;
                transition: 0.3s;
                font-size: 1.2rem;
                position: absolute;
                text-indent: -2px;
                color: #eac18a;

                &.visible {
                    animation: shineLetter;
                    animation-duration: 1.5s;
                    animation-iteration-count: infinite;
                    visibility: visible;
                }
            }
            &.triangle-colored {
                filter: drop-shadow(0px 0px 3px rgb(55, 114, 133))!important;
                border-top-color: var(--sapphire_color_shine)!important;
                border-bottom-color: var(--sapphire_color_shine)!important;
            }
        }

        & .triangle-big--center {
            border-left: calc(var(--main_size) * 0.8px) solid transparent;
            border-right: calc(var(--main_size) * 0.8px) solid transparent;
            border-top: calc(var(--main_size) * 2px) solid var(--sapphire_color);
            left: calc(var(--main_size) * 0.7px);
            top: calc(var(--main_size) * 1px);
            z-index: 4;

            &>.triangle-text {
                top: calc(0px - (var(--main_size) + var(--main_size)) * 0.7px);
                left: calc(0px - var(--main_size) * 0.05px);
            }
        }

        & .triangle-big--left {
            border-left: calc(var(--main_size) * 1.5px) solid transparent;
            border-right: 0px solid transparent;
            border-top: calc(var(--main_size) * 2px) solid var(--sapphire_color);
            top: calc(var(--main_size) * 1px);
            z-index: 1;

            &>.triangle-text {
                top: calc(0px - (var(--main_size) + var(--main_size)) * 0.8px);
                left: calc(0px - var(--main_size) * 0.85px);
            }
        }

        & .triangle-big--right {
            border-left: 0px solid transparent;
            border-right: calc(var(--main_size) * 1.5px) solid transparent;
            border-top: calc(var(--main_size) * 2px) solid var(--sapphire_color);
            left: calc(var(--main_size) * 1.5px);
            top: calc(var(--main_size) * 1px);
            z-index: 2;

            &>.triangle-text {
                top: calc(0px - (var(--main_size) + var(--main_size)) * 0.8px);
                left: calc(var(--main_size) * 0.75px);
            }
        }
    }
}


/* Позиционирование верхних треугольников */
.triangle--small:nth-child(1) {
    left: 0;
}
.triangle--small:nth-child(2) {
    left: calc(var(--main_size) * 1px);
}
.triangle--small:nth-child(3) {
    left: calc(var(--main_size) * 2px);
}
.triangle--small:nth-child(4) {
    left: calc(var(--main_size) * 3px);
}
.triangle--small:nth-child(5) {
    left: calc(var(--main_size) * 4px);
}


@keyframes shineLetter {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
    }
}