hedgedoc/frontend/src/components/application-loader/loading-screen/animations.module.scss

/*!
 * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */
@import "keyframes";

.rows {
  transition: opacity 0.2s;

  .row {
    position: absolute;
    top: 50%;
    left: 50%;
  }

  .particle {
    width: 24px;
    height: 24px;
    position: absolute;
    font-size: 1.3em !important;
    top: calc(50% - 12px);
    left: calc(50% - 12px);
    animation: particle 3s infinite;
  }

  @for $i from 1 through 12 {
    .row:nth-child(#{$i}) {
      transform: rotateZ(30deg * ($i - 1));

      @for $j from 1 through 10 {
        & .particle:nth-child(#{$j}) {
          opacity: 0;
          animation-timing-function: ease-out;
          animation-delay: -$i * 830ms - $j * 600ms;
        }
      }
    }
  }
}

.logo {
  z-index: 1000;
  position: relative;
  font-size: 3em;
  height: 240px;
  width: 203px;
  color: #ffffff;
  text-shadow: 4px 4px 0 #3b4045;

  .overlay {
    color: rgb(181, 31, 8);
    height: 0;
    overflow: hidden;
    animation: fill 6s infinite;
    width: 100%;

    &, :global(.fa) {
      position: absolute;
      bottom: 0;
      left: 0;
    }
  }
}

.pulse {
  animation: 3s pulse infinite;
  box-shadow: #404040 0 0 200px 100px;
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 1px;
  border-radius: 100%;
  margin: auto;
  right: 0;
  bottom: 0;
}

.error {
  .channels {
    opacity: 0;
  }

  .pulse {
    animation: none;
  }

  .logo {
    .overlay {
      animation: none;
    }

    color: rgb(181, 31, 8);
    animation: 1s shake;
  }
}