<div class="reactor">
  <div class="trapezoid-container">
    <div class="trapezoid trapezoid-1"></div>
    <div class="trapezoid trapezoid-2"></div>
    <div class="trapezoid trapezoid-3"></div>
    <div class="trapezoid trapezoid-4"></div>
    <div class="trapezoid trapezoid-5"></div>
    <div class="trapezoid trapezoid-6"></div>
    <div class="trapezoid trapezoid-7"></div>
    <div class="trapezoid trapezoid-8"></div>
    <div class="trapezoid trapezoid-9"></div>
    <div class="trapezoid trapezoid-10"></div>
  </div>

  <div class="small-circle-container">
    <div class="small-circle small-circle-1"></div>
    <div class="small-circle small-circle-2"></div>
    <div class="small-circle small-circle-3"></div>
    <div class="small-circle small-circle-4"></div>
    <div class="small-circle small-circle-5"></div>
    <div class="small-circle small-circle-6"></div>
    <div class="small-circle small-circle-7"></div>
    <div class="small-circle small-circle-8"></div>
    <div class="small-circle small-circle-9"></div>
    <div class="small-circle small-circle-10"></div>
    <div class="small-circle small-circle-11"></div>
    <div class="small-circle small-circle-12"></div>
  </div>

  <div class="circle-outer"></div>
  <div class="circle-center"></div>
  <div class="circle-innner"></div>
</div>

// colors
$bg-color: #0c0e0e;
$reactor-inner-color:#002d34;
$reactor-center-color:#0089a9;
$reactor-outer-color:#00a6ce;
$trapezoid-color: #46fffe;
$trapezoid-inner-color: #e4ffff;
$trapezoid-center-color: #1ffffd;
$small-circle-inner-color: #eeffff;
$small-circle-center-color:#21fffe;
$small-circle-outer-color:#009fc1;
$circle-inner-color: #52fefe;
$circle-outer-color: #52fefe;
$circle-center-color: #0c4d5b;
$circle-bg-white-color: #ffffff;
$circle-box-shadow-color: #52fefe;

// sizes
$reactor-size: 60vmin;
$trapezoid-deg: 0deg;
$small-circle-deg: 0deg;

// mixin
@mixin center {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
}

@mixin pseudo($position: absolute, $content: "") {
    content: $content;
    position: $position;
}

body {
    @include center;
    background: $bg-color;
    margin-left: -3%;
    overflow: hidden;
}

.reactor {
    @include center;
    width: $reactor-size;
    height: $reactor-size;
    border-radius: 50%;
    background: radial-gradient(circle, $reactor-inner-color 30%, $reactor-center-color 60%, $reactor-outer-color);
    border: 1vw solid rgba($reactor-inner-color, 0.3);
    filter: drop-shadow(0 0 1.8vmin $trapezoid-color);
    .trapezoid-container {
        position: relative;
        width: 100%;
        height: 100%;
        .trapezoid {
            box-sizing: content-box;
            width: 5vmin;
            height: 0;
            position: absolute;
            top: -4.5vmin;
            left: 20.5vmin;
            transform-origin: 10vmin 35vmin;
            border: 5vmin solid transparent;
            border-bottom: 0 solid;
            border-top: 10vmin solid $trapezoid-color;
            border-radius: 4vmin;
            filter: drop-shadow(0 0 1.8vmin $trapezoid-color);
            &:after {
                @include pseudo;
                width: 8vmin;
                height: 8vmin;
                border-radius: 50%;
                background: radial-gradient( circle, $trapezoid-inner-color 30%, $trapezoid-center-color);
                margin: 0;
                bottom: 1.5vmin;
                right: -1.5vmin;
            }
        }
        @for $i from 1 through 10 {
            .trapezoid-#{$i} {
                transform: rotate($trapezoid-deg);
            }
            $trapezoid-deg: $trapezoid-deg+36deg;
        }
    }
    .small-circle-container {
        position: relative;
        width: 100%;
        height: 100%;
        .small-circle {
            position: absolute;
            width: 4vmin;
            height: 4vmin;
            top: -50vmin;
            left: 21vmin;
            transform-origin: 9vmin 20.5vmin;
            border-radius: 50%;
            background: radial-gradient( circle, $small-circle-inner-color 20%, $small-circle-center-color, $small-circle-outer-color);
        }
        @for $i from 1 through 12 {
            .small-circle-#{$i} {
                transform: rotate($small-circle-deg);
            }
            $small-circle-deg: $small-circle-deg+30deg;
        }
    }
    .circle-outer {
        @include center;
        width: 30.5vmin;
        height: 30.5vmin;
        border: 1px solid $circle-outer-color;
        background-color: $circle-bg-white-color;
        border-radius: 50%;
        box-shadow: 0px 0px 2px 1px $circle-box-shadow-color, 0px 0px 2vw 0.8vmin $circle-box-shadow-color inset;
    }
    .circle-center {
        @include center;
        width: 22vmin;
        height: 22vmin;
        background-color: $circle-center-color;
        border-radius: 50%;
        box-shadow: 0px 0px 2px 1px $circle-box-shadow-color, 0px 0px 2vw 0.8vmin $circle-box-shadow-color;
    }
    .circle-innner {
        @include center;
        width: 19vmin;
        height: 19vmin;
        border: 1px solid $circle-inner-color;
        background-color: $circle-bg-white-color;
        border-radius: 50%;
        box-shadow: 0px 0px 2px 1px $circle-box-shadow-color, 0px 0px 4.5vw 1.5vmin $circle-box-shadow-color inset;
    }
}