.o_field_selector {
    position: relative;

    .o_field_selector_controls {
        .o-position-absolute(0, 0, 1px);
        .o-flex-display();
        .o-align-items(center);
        cursor: pointer;

        &::after {
            .o-caret-down();
        }
    }
    .o_field_selector_popover {
        @o-field-selector-arrow-height: 7px;
        .o-position-absolute(@top: 100%, @left: 0);
        z-index: 1051;
        width: 265px;
        margin-top: @o-field-selector-arrow-height;
        background: white;
        box-shadow: 0 3px 10px rgba(0,0,0,.4);

        &:focus {
            outline: none;
        }

        .o_field_selector_popover_header {
            color: white;
            background: @brand-primary;
            font-weight: bold;
            padding: 5px 0 5px 0.4em;

            .o_field_selector_title {
                width: 100%;
                .o-text-overflow();
                padding: 0px 35px;
                text-align: center;
            }
            .o_field_selector_popover_option {
                .o-position-absolute(@top: 0);
                padding: 7px 8px 8px 6px;

                &.o_prev_page {
                    left: 0;
                    border-right: 1px solid darken(@brand-primary, 10%);
                }
                &.o_field_selector_close {
                    right: 0;
                    border-left: 1px solid darken(@brand-primary, 10%);
                }
                &:hover {
                    background: darken(@brand-primary, 10%);
                }
            }
            &:before {
                .o-position-absolute(@top: -@o-field-selector-arrow-height, @left: @o-field-selector-arrow-height);
                content: "";
                border-left: @o-field-selector-arrow-height solid rgba(0, 0, 0, 0);
                border-right: @o-field-selector-arrow-height solid rgba(0, 0, 0, 0);
                border-bottom: @o-field-selector-arrow-height solid @brand-primary;
            }
        }
        .o_field_selector_popover_body {
            .o_field_selector_page {
                position: relative;
                max-height: 320px;
                overflow: auto;
                margin: 0;
                padding: 0;

                > .o_field_selector_item {
                    list-style: none;
                    position: relative;
                    padding: 5px 0 5px 0.4em;
                    cursor: pointer;
                    font-family: Arial;
                    font-size: 13px;
                    color: #444;
                    border-bottom: 1px solid #eee;
                    &.active {
                        background: #f5f5f5;
                    }
                    .o_field_selector_item_title {
                        font-size: 12px;
                    }
                    .o_field_selector_relation_icon {
                        .o-position-absolute(@top: 0, @right: 0, @bottom: 0);
                        .o-flex-display();
                        .o-align-items(center);
                        padding: 10px;
                    }
                }
            }
        }
    }
}