app/components/home.module.scss

@mixin container {
  background-color: var(--white);
  border: var(--border-in-light);
  border-radius: 20px;
  box-shadow: var(--shadow);
  color: var(--black);
  background-color: var(--white);
  min-width: 600px;
  min-height: 370px;
  max-width: 1200px;

  display: flex;
  overflow: hidden;
  box-sizing: border-box;

  width: var(--window-width);
  height: var(--window-height);
}

.container {
  @include container();
}

@media only screen and (min-width: 600px) {
  .tight-container {
    --window-width: 100vw;
    --window-height: var(--full-height);
    --window-content-width: calc(100% - var(--sidebar-width));

    @include container();

    max-width: 100vw;
    max-height: var(--full-height);

    border-radius: 0;
    border: 0;
  }
}

.sidebar {
  top: 0;
  width: var(--sidebar-width);
  box-sizing: border-box;
  padding: 20px;
  background-color: var(--second);
  display: flex;
  flex-direction: column;
  box-shadow: inset -2px 0px 2px 0px rgb(0, 0, 0, 0.05);
  position: relative;
  transition: width ease 0.05s;

  .sidebar-header-bar {
    display: flex;
    margin-bottom: 20px;

    .sidebar-bar-button {
      flex-grow: 1;

      &:not(:last-child) {
        margin-right: 10px;
      }
    }
  }

  &:hover,
  &:active {
    .sidebar-drag {
      background-color: rgba($color: #000000, $alpha: 0.01);

      svg {
        opacity: 0.2;
      }
    }
  }
}

.sidebar-drag {
  $width: 14px;

  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: $width;
  background-color: rgba($color: #000000, $alpha: 0);
  cursor: ew-resize;
  transition: all ease 0.3s;
  display: flex;
  align-items: center;

  svg {
    opacity: 0;
    margin-left: -2px;
  }
}

.window-content {
  width: var(--window-content-width);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.mobile {
  display: none;
}

@media only screen and (max-width: 600px) {
  .container {
    min-height: unset;
    min-width: unset;
    max-height: unset;
    min-width: unset;
    border: 0;
    border-radius: 0;
  }

  .sidebar {
    position: absolute;
    left: -100%;
    z-index: 1000;
    height: var(--full-height);
    transition: all ease 0.3s;
    box-shadow: none;
  }

  .sidebar-show {
    left: 0;
  }

  .mobile {
    display: block;
  }
}

.sidebar-header {
  position: relative;
  padding-top: 20px;
  padding-bottom: 20px;
}

.sidebar-logo {
  position: absolute;
  right: 0;
  bottom: 18px;
}

.sidebar-title {
  font-size: 20px;
  font-weight: bold;
  animation: slide-in ease 0.3s;
}

.sidebar-sub-title {
  font-size: 12px;
  font-weight: 400;
  animation: slide-in ease 0.3s;
}

.sidebar-body {
  flex: 1;
  overflow: auto;
  overflow-x: hidden;
}

.chat-item {
  padding: 10px 14px;
  background-color: var(--white);
  border-radius: 10px;
  margin-bottom: 10px;
  box-shadow: var(--card-shadow);
  transition: background-color 0.3s ease;
  cursor: pointer;
  user-select: none;
  border: 2px solid transparent;
  position: relative;
  content-visibility: auto;
}

.chat-item:hover {
  background-color: var(--hover-color);
}

.chat-item-selected {
  border-color: var(--primary);
}

.chat-item-title {
  font-size: 14px;
  font-weight: bolder;
  display: block;
  width: calc(100% - 15px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  animation: slide-in ease 0.3s;
}

.chat-item-delete {
  position: absolute;
  top: 0;
  right: 0;
  transition: all ease 0.3s;
  opacity: 0;
  cursor: pointer;
}

.chat-item:hover > .chat-item-delete {
  opacity: 0.5;
  transform: translateX(-4px);
}

.chat-item:hover > .chat-item-delete:hover {
  opacity: 1;
}

.chat-item-info {
  display: flex;
  justify-content: space-between;
  color: rgb(166, 166, 166);
  font-size: 12px;
  margin-top: 8px;
  animation: slide-in ease 0.3s;
}

.chat-item-count,
.chat-item-date {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.narrow-sidebar {
  .sidebar-title,
  .sidebar-sub-title {
    display: none;
  }
  .sidebar-logo {
    position: relative;
    display: flex;
    justify-content: center;
  }

  .sidebar-header-bar {
    flex-direction: column;

    .sidebar-bar-button {
      &:not(:last-child) {
        margin-right: 0;
        margin-bottom: 10px;
      }
    }
  }

  .chat-item {
    padding: 0;
    min-height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all ease 0.3s;
    overflow: hidden;

    &:hover {
      .chat-item-narrow {
        transform: scale(0.7) translateX(-50%);
      }
    }
  }

  .chat-item-narrow {
    line-height: 0;
    font-weight: lighter;
    color: var(--black);
    transform: translateX(0);
    transition: all ease 0.3s;
    padding: 4px;
    display: flex;
    flex-direction: column;
    justify-content: center;

    .chat-item-avatar {
      display: flex;
      justify-content: center;
      opacity: 0.2;
      position: absolute;
      transform: scale(4);
    }

    .chat-item-narrow-count {
      font-size: 24px;
      font-weight: bolder;
      text-align: center;
      color: var(--primary);
      opacity: 0.6;
    }
  }

  .sidebar-tail {
    flex-direction: column-reverse;
    align-items: center;

    .sidebar-actions {
      flex-direction: column-reverse;
      align-items: center;

      .sidebar-action {
        margin-right: 0;
        margin-top: 15px;
      }
    }
  }
}

.sidebar-tail {
  display: flex;
  justify-content: space-between;
  padding-top: 20px;
}

.sidebar-actions {
  display: inline-flex;
}

.sidebar-action:not(:last-child) {
  margin-right: 15px;
}

.loading-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
  width: 100%;
}

.rtl-screen {
  direction: rtl;
}