:root {
  --spacing-smaller: 3px;
  --spacing-small: 5px;
  --spacing-medium: 7px;
  --spacing-large: 12px;
  --font-size: 12px;
  --font-size-large: 15px;
  --font-size-larger: 16px;
  --line-height: 16px;
  --line-height-larger: 20px;
  --primary-color: #79b6d0;
  --text-color-dark: #212529;
  --text-color: #585858;
  --text-color-light: #65727e;
  --border-color: #bebebe;
  --border-color-light: #f1f3f5;
  --input-placeholder: #65727e;
  --input-background: #e9e9ed;
  --input-border: #dee2e6;
  --input-border-active: #c1c9d0;
  --input-border-invalid: #e44e4e;
  --input-outline-invalid: rgba(219, 138, 138, 0.5);
  --input-color: #e9e9ed;
  --input-disabled: #f7f7f7;
  --input-min-height: 45px;
  --options-height: 40dvh;
  --option-background: #f3f4f7;
  --border-radius: 5px;
  --icon-size: 12px;
  --icon-space: 30px;
  --checkbox-size: 18px;
  --checkbox-radius: 4px;
  --checkbox-border: #ced4da;
  --checkbox-background: #fff;
  --checkbox-active: #fff;
  --checkbox-thickness: 3px;
}

.multi-select {
  display: flex;
  box-sizing: border-box;
  flex-direction: column;
  position: relative;
  width: 100%;
  user-select: none;
}

  .multi-select .multi-select-header {
    border: 1px solid var(--input-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-medium) var(--spacing-large);
    padding-right: var(--icon-space);
    overflow: hidden;
    gap: var(--spacing-medium);
    min-height: var(--input-min-height);
  }

    .multi-select .multi-select-header::after {
      content: "";
      display: block;
      position: absolute;
      top: 50%;
      right: 15px;
      transform: translateY(-50%);
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23949ba3' viewBox='0 0 16 16'%3E%3Cpath d='M8 13.1l-8-8 2.1-2.2 5.9 5.9 5.9-5.9 2.1 2.2z'/%3E%3C/svg%3E");
      height: var(--icon-size);
      width: var(--icon-size);
    }

    .multi-select .multi-select-header.multi-select-header-active {
      border-color: var(--input-border-active);
    }

      .multi-select .multi-select-header.multi-select-header-active::after {
        transform: translateY(-50%) rotate(180deg);
      }

      .multi-select .multi-select-header.multi-select-header-active + .multi-select-options {
        display: flex;
      }

    .multi-select .multi-select-header .multi-select-header-placeholder {
      color: var(--text-color-light);
    }

    .multi-select .multi-select-header .multi-select-header-option {
      display: inline-flex;
      align-items: center;
      background-color: var(--option-background);
      font-size: var(--font-size-large);
      padding: var(--spacing-smaller) var(--spacing-small);
      border-radius: var(--border-radius);
    }

    .multi-select .multi-select-header .multi-select-header-max {
      font-size: var(--font-size-large);
      color: var(--text-color-light);
    }

  .multi-select .multi-select-options {
    display: none;
    box-sizing: border-box;
    flex-flow: wrap;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 999;
    margin-top: var(--spacing-small);
    padding: var(--spacing-small);
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    max-height: var(--options-height);
    overflow-y: auto;
    overflow-x: hidden;
  }

    .multi-select .multi-select-options::-webkit-scrollbar {
      width: 5px;
    }

    .multi-select .multi-select-options::-webkit-scrollbar-track {
      background: #f0f1f3;
    }

    .multi-select .multi-select-options::-webkit-scrollbar-thumb {
      background: #cdcfd1;
    }

      .multi-select .multi-select-options::-webkit-scrollbar-thumb:hover {
        background: #b2b6b9;
      }

    .multi-select .multi-select-options .multi-select-option,
    .multi-select .multi-select-options .multi-select-all {
      padding: var(--spacing-large);
    }

      .multi-select .multi-select-options .multi-select-option .multi-select-option-radio,
      .multi-select .multi-select-options .multi-select-all .multi-select-option-radio {
        background: var(--checkbox-background);
        margin-right: var(--spacing-large);
        height: var(--checkbox-size);
        width: var(--checkbox-size);
        border: 1px solid var(--checkbox-border);
        border-radius: var(--checkbox-radius);
      }

      .multi-select .multi-select-options .multi-select-option .multi-select-option-text,
      .multi-select .multi-select-options .multi-select-all .multi-select-option-text {
        box-sizing: border-box;
        flex: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        color: inherit;
        font-size: var(--font-size-larger);
        line-height: var(--line-height);
      }

      .multi-select .multi-select-options .multi-select-option.multi-select-selected .multi-select-option-radio,
      .multi-select .multi-select-options .multi-select-all.multi-select-selected .multi-select-option-radio {
        border-color: var(--primary-color);
        background-color: var(--primary-color);
      }

        .multi-select .multi-select-options .multi-select-option.multi-select-selected .multi-select-option-radio::after,
        .multi-select .multi-select-options .multi-select-all.multi-select-selected .multi-select-option-radio::after {
          content: "";
          display: block;
          width: calc(var(--checkbox-size) / 2.5);
          height: calc(var(--checkbox-size) / 2);
          border: solid var(--checkbox-active);
          border-width: 0 var(--checkbox-thickness) var(--checkbox-thickness) 0;
          transform: rotate(45deg) translate(50%, -25%);
        }

      .multi-select .multi-select-options .multi-select-option.multi-select-selected .multi-select-option-text,
      .multi-select .multi-select-options .multi-select-all.multi-select-selected .multi-select-option-text {
        color: var(--text-color-dark);
      }

      .multi-select .multi-select-options .multi-select-option:hover, .multi-select .multi-select-options .multi-select-option:active,
      .multi-select .multi-select-options .multi-select-all:hover, .multi-select .multi-select-options .multi-select-all:active {
        background-color: var(--option-background);
      }

    .multi-select .multi-select-options .multi-select-all {
      border-bottom: 1px solid var(--border-color-light);
      border-radius: 0;
    }

    .multi-select .multi-select-options .multi-select-search {
      padding: var(--spacing-medium) var(--spacing-large);
      border: 1px solid var(--input-border);
      border-radius: var(--border-radius);
      margin: 10px 10px 5px 10px;
      width: 100%;
      outline: none;
      font-size: var(--font-size-larger);
    }

      .multi-select .multi-select-options .multi-select-search::placeholder {
        color: var(--text-color-light);
      }

  .multi-select .multi-select-header,
  .multi-select .multi-select-option,
  .multi-select .multi-select-all {
    display: flex;
    flex-wrap: wrap;
    box-sizing: border-box;
    align-items: center;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    width: 100%;
    font-size: var(--font-size-larger);
    color: var(--text-color-dark);
  }

  .multi-select.disabled {
    opacity: 0.6;
    pointer-events: none;
    background-color: var(--input-disabled);
  }

  .multi-select.multi-select-invalid .multi-select-header {
    border-color: var(--input-border-invalid);
    outline: var(--input-outline-invalid) solid 1px;
  }