*, *::before, *::after {
  box-sizing: border-box;
}

body, html {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.joystick {
  width: var(--size);
  height: var(--size);
  background-color: #e7e7e7b3;
  border-radius: 100%;
  border: 2px solid #ddd;
  z-index: 1000;

  &__wrapper {
    display: none;
    position: absolute;
    left: calc(50% - var(--size) / 2);
    bottom: 10px;
  }

  &__knob {
    width: calc(var(--size) / 2);
    height: calc(var(--size) / 2);
    position: absolute;
    background-color: #fff;
    border: 2px solid #ddd;
    border-radius: 100%;
    cursor:grab;
    transform-origin: center center;
  }

  &__button {
    position: absolute;
    appearance: none;
    left: var(--button-x);
    top: var(--button-y);
    width: 48px;
    height: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 100%;
    background-color: rgba(231, 231, 231, 0.7019607843);
    border: 2px solid #ddd;
    z-index: 1001;
    color: #5c5c5c;
    font-weight: bold;
    transition: border 250ms linear, background-color 250ms linear;

    &--active {
      border-width: 4px;
      border-color: #db8f00;
      background-color: rgb(231 231 231 / 78%);
    }
  }
}

.chat {
  min-width: 200px;
  width: 40vw;
  max-height: 180px;
  height: 180px;
  display: flex;
  flex-direction: column;

  &__toggle {
    width: 24px;
    height: 24px;
    appearance: none;
    background-color: #fff;
    background-position: center center;
    background-repeat: no-repeat;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 style=%27width:24px;height:24px%27 viewBox=%270 0 24 24%27%3E%3Cpath fill=%27%23878787%27 d=%27M20 2H4C2.9 2 2 2.9 2 4V22L6 18H20C21.1 18 22 17.1 22 16V4C22 2.9 21.1 2 20 2M20 16H5.2L4 17.2V4H20V16Z%27 /%3E%3C/svg%3E");
    padding: 1rem;
    border: 2px solid transparent;
    border-radius: 100%;
    background-size: 70%;
    margin-bottom: 0.5rem;

    transition-property: background-color, border-color;
    transition-timing-function: linear;
    transition-duration: 150ms;

    &:hover {
      background-color: rgb(233, 233, 233);
    }
  }

  &__wrapper {
    position: absolute;
    bottom: 8px;
    left: 8px;
    z-index: 2000;
  }

  &__history {
    flex-grow: 1;
    overflow-y: scroll;
    padding: 0.15rem;
  }

  &__input {
    flex-grow: 1;
    &-wrapper {
      display: flex;
      flex-direction: row;
    }
  }

  &__message {
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
    text-shadow: 1px 1px 2px black;

    &-timestamp {
      color: #646464;
      &::before {
        content: '[';
      }
      &::after {
        content: ']';
      }
    }

    &-sender {
      color: var(--name-color);
      &::before {
        content: '<';
      }
      &::after {
        content: '>';
      }
    }

    &-content {
      --text-color: #fff;
      color: var(--text-color);
      overflow-wrap: anywhere;
    }
  }

  &__wrapper.invisible {
    .chat {
      &__input-wrapper {
        display: none;
      }

      &__history {
        overflow: hidden;
      }

      &__message {
        visibility: visible;
        opacity: 1;

        &--old {
          visibility: hidden;
          opacity: 0;
          transition: visibility 0s 2s, opacity 2s linear;
        }
      }
    }
  }

  &__wrapper.visible {
    .chat__history {
      background-color: rgba(73, 73, 73, 0.3);
    }

    .chat__toggle {
      border-color: #878787;
    }
  }
}

@media all and (max-width: 737px) {
  .chat {
    &__wrapper {
      right: 8px;

      &:not(.visible) {
        &, *:not(input):not(button) {
          pointer-events: none;
        }

        button, input {
          pointer-events: all;
        }
      }
    }

    min-width: 100%;
    width: 100%;
  }
}

.loading {
  display: flex;
  flex-direction: column;
  max-width: 400px;
  width: 100vw;
  margin: 10% auto;
  text-align: center;
  font-size: 2rem;
  padding: 2rem;

  &__wrapper {
    position: absolute;
    z-index: 3000;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background-color: #202020;
    color: #fff;
    transition: opacity 1s linear;
    opacity: 1;
    pointer-events: none;

    &.loading--complete {
      opacity: 0;
    }

    &.loading--error {
      .loading__bar {
        display: none;
      }
    }
  }

  &__bar {
    width: 100%;
    height: 20px;
    margin-top: 2rem;
    background-color: #141414;
    border-radius: 4px;
    overflow: hidden;

    &-inner {
      width: var(--loading-percentage);
      height: 20px;
      background-color: #1098ab;
      transition: width 50ms linear;

      background-image: linear-gradient(
        -45deg, 
        rgba(255, 255, 255, .2) 25%, 
        transparent 25%, 
        transparent 50%, 
        rgba(255, 255, 255, .2) 50%, 
        rgba(255, 255, 255, .2) 75%, 
        transparent 75%, 
        transparent
      );
      z-index: 1;
      background-size: 50px 50px;
      animation: move 2s linear infinite;
    }
  }
}

@keyframes move {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 50px 50px;
  }
}