:root {
  --icon-hover-scale: 110%;
}

/*common rules for mobile and desktop*/
.button-panel {
  position: absolute;
  background-color: aliceblue;
  z-index: 600;
}

/*common icon setting*/
.icon {
  background-color: transparent;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;

  border-radius: 50%;
}

/*variation for desktop*/
@media (min-width: 600px) {

  /*button panel on desktop*/
  .button-panel {
    left: 50%;
    height: fit-content;
    width: 35%;
    min-width: 550px;
    transform: translate(-50%, -150%);

    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-evenly;

    background-color: var(--transparent-bg);
  }

  .button-panel.standard {
    top: calc(80% - var(--layout-margin));
  }

  .button-panel.full {
    top: calc(100% - var(--layout-margin))
  }

  .icon {
    height: 80px;
    width: 80px;
  }

  /*.flip-camera {
    display: none;
  }*/

  /*the hover feature only available on mobile devices*/
  .icon:hover {
    transform: scale(var(--icon-hover-scale));
  }
}

/*variation for mobile*/
@media (max-width: 600px) {
  .button-panel {
    left: calc(0% + var(--layout-margin));
    height: 50%;
    width: 14%;

    transform: translate(0%, -50%);

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-evenly;

    background-color: var(--transparent-bg);
  }

  .button-panel.standard {
    top: 50%;
  }

  .button-panel.full {
    top: 50%;
  }

  .icon {
    height: 14vw;
    width: 14vw;
  }

  .screen-share {
    display: none;
  }
}

/*specific icon setting*/
.link {
  background-image: url("./assets/icons/svg/link.svg");
}

.mic {
  background-image: url("./assets/icons/svg/mic.svg");
}

.video {
  background-image: url("./assets/icons/svg/video_close.svg");
}

.chat {
  background-image: url("./assets/icons/svg/chat.svg");
}

.screen-share {
  background-image: url("./assets/icons/svg/screen.svg");
}

.leave {
  background-image: url("./assets/icons/svg/leave_call.svg");
}

.flip-camera {
  background-image: url("./assets/icons/svg/flip_camera.svg");
}

.full-screen {
  background-image: url("./assets/icons/svg/full_screen.svg");
}

.standard-screen {
  background-image: url("./assets/icons/svg/standard_screen.svg");
}

.display-audio {
  background-image: url("./assets/icons/svg/display_audio.svg");
}