.altselect {
    --border-color: var(--color-05);
    --border-focus-color: var(--color-12);
    
    --background-color: var(--color-02);

    --text-color: var(--color-01);

    --font-size: var(--font-size-m);
    
    --option-height: 40px;
    --option-hover-background-color: #fcfcfc;
    --option-selected-background-color: #fcfcfc;
    --option-disabled-background-color: #cccccc;
    --option-padding: 0 calc(var(--space-xs) + var(--space-xs));

    --transition: all 0s ease;

    width: 100%;

    background-color: var(--background-color);

    box-sizing: border-box;
    -webkit-box-sizing: border-box;

    display: flex;
    flex-direction: column;

    position: relative;

    z-index: 1;

    cursor: pointer;

    user-select: none;
    
    transition: var(--transition);
    -webkit-transition: var(--transition);
}

.altselect._active {
    z-index: 2;
}

.altselect * {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;

    /* font-family: Arial, Helvetica, sans-serif;
    font-size: var(--font-size); */
}

.altselect-display {
    height: 40px;

    border: 1px solid var(--border-color);
    border-radius: 0;

    outline: none;

    color: var(--text-color);

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    
    padding: 0 16px;

    position: relative;

    cursor: pointer;

    transition: var(--transition);
    -webkit-transition: var(--transition);
}

.altselect._active > .altselect-display {
    border-color: var(--border-focus-color);

    z-index: 2;
}

.altselect-text {
    width: calc(100% - 20px);

    line-height: 1;

    display: flex;
    align-items: center;
    gap: 8px;
}

.altselect-text > span {
    width: 100%;

    line-height: 1;

    text-overflow: ellipsis;

    white-space: nowrap;

    overflow: hidden;
}

.altselect-arrow {
    width: 12px;
    height: 12px;

    background-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTQiIGhlaWdodD0iOCIgdmlld0JveD0iMCAwIDE0IDgiIGZpbGw9Im5vbmUiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+CjxwYXRoIGQ9Ik0xMyAxTDcgN0wxIDEiIHN0cm9rZT0iYmxhY2siLz4KPC9zdmc+Cg==");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 12px auto;

    transition: var(--transition);
    -webkit-transition: var(--transition);
}

.altselect._active .altselect-arrow {
    transform: rotate(-180deg);
    -webkit-transform: rotate(-180deg);
}

.altselect-options {
    width: 100%;
    max-height: calc(4 * var(--option-height));

    border-top: 1px solid transparent;
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid transparent;
    border-left: 1px solid var(--border-color);

    background-color: var(--background-color);

    display: none;

    position: absolute;

    z-index: 1;

    overflow-y: auto;

    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    
    transition: var(--transition);
    -webkit-transition: var(--transition);
}

.altselect-options::-webkit-scrollbar {
    width: 4px;

    border-radius: 0;
    
    background-color: var(--background-color);
}

.altselect-options::-webkit-scrollbar-thumb {
    border-radius: 0;
    
    background-color: var(--border-focus-color);
}

.altselect::-webkit-scrollbar-button {
    display: none;
}

.altselect-options._bottom {
    border-bottom-color: var(--border-color);

    top: calc(100% - 1px);
}

.altselect._active > .altselect-options._bottom {
    border-right-color: var(--border-focus-color);
    border-bottom-color: var(--border-focus-color);
    border-left-color: var(--border-focus-color);
}

.altselect-options._top {
    border-top-color: var(--border-color);

    bottom: calc(100% - 1px);
}

.altselect._active > .altselect-options._top {
    border-top-color: var(--border-focus-color);
    border-right-color: var(--border-focus-color);
    border-left-color: var(--border-focus-color);
}

.altselect-search-field {
    width: 100%;
    height: var(--option-height);
    
    border: none;
    border-bottom: 1px solid var(--border-color);
    
    padding: var(--option-padding);
    
    font-size: var(--font-size);

    line-height: 1;
    
    outline: none;
    
    background-color: var(--background-color);
}

.altselect-search-field::placeholder {
    color: var(--text-color);
}

.altselect-search-field:focus {
    background-color: var(--option-hover-background-color);
}

.altselect-search-field._no-bottom-border {
    border-bottom: none;
}

.altselect._active > .altselect-options {
    display: block;
}

.altselect-option {
    height: var(--option-height);
    
    border-bottom: 1px solid var(--border-color);

    color: var(--text-color);

    line-height: 1;

    display: flex;
    align-items: center;
    gap: 8px;

    padding: var(--option-padding);

    cursor: pointer;

    transition: var(--transition);
    -webkit-transition: var(--transition);
}

.altselect-option:last-child {
    border-bottom: none;
}

.altselect-option:hover {
    background-color: var(--option-hover-background-color);
}

.altselect-option._no-bottom-border {
    border-bottom: none;
}

.altselect-option._selected {
    background-color: var(--option-selected-background-color);
}

.altselect-option._disabled {
    color: var(--option-disabled-background-color);
    
    cursor: not-allowed;
}

.altselect-option._disabled:hover {
    background-color: var(--option-disabled-background-color);
}

.altselect-option > span {
    line-height: 1;

    text-overflow: ellipsis;

    white-space: nowrap;

    overflow: hidden;
}