riot-web/res/css/structures/_RoomSubList.scss

/*
Copyright 2015, 2016 OpenMarket Ltd

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

.mx_RoomSubList {
    min-height: 31px;
    flex: 0 1 auto;
    display: flex;
    flex-direction: column;
}

.mx_RoomSubList_nonEmpty {
    margin-bottom: 8px;
}

.mx_RoomSubList_labelContainer {
    display: flex;
    flex-direction: row;
    flex: 0 0 auto;
    margin: 8px 19px 0 0;
}

.mx_RoomSubList_label {
    flex: 1;
    position: relative;
    text-transform: uppercase;
    color: $roomsublist-label-fg-color;
    font-weight: 700;
    font-size: 12px;
    margin-left: 16px;
    padding-left: 16px; /* gutter */
    padding-right: 16px; /* gutter */
    padding-top: 6px;
    padding-bottom: 6px;
    cursor: pointer;
    background-color: $secondary-accent-color;
}

.mx_RoomSubList_label.mx_RoomSubList_fixed {
    position: fixed;
    top: 0;
    z-index: 5;
    /* pointer-events: none; */
}

.mx_RoomSubList_badge {
    height: 18px;
    border-radius: 9px;
    color: $accent-fg-color;
    font-weight: 600;
    font-size: 12px;
    vertical-align: middle;
    line-height: 18px;
    padding: 0 4px;
    background-color: $accent-color;
}

.mx_RoomSubList_label .mx_RoomSubList_badge:hover {
    filter: brightness($focus-brightness);
}

.mx_RoomSubList_addRoom, .mx_RoomSubList_badge {
    margin: 5px;
}

.mx_RoomSubList_addRoom {
    background-color: $roomheader-addroom-color;
    color: $roomsublist-background;
    border-radius: 9px;
    text-align: center;
    vertical-align: middle;
    line-height: 18px;
    font-weight: bold;
    font-size: 18px;
    width: 18px;
    height: 18px;
}

.mx_RoomSubList_badgeHighlight {
    background-color: $warning-color;
}

/* This is the bottom of the speech bubble */
.mx_RoomSubList_badgeHighlight:after {
    content: "";
    position: absolute;
    display: block;
    width: 0;
    height: 0;
    margin-left: 5px;
    border-top: 5px solid $warning-color;
    border-right: 7px solid transparent;
}

.mx_RoomSubList_chevron {
    left: 0px;
    pointer-events: none;
    position: absolute;
    top: 11px;
    width: 9px;
    height: 4px;
    background-image: url('../../img/topleft-chevron.svg');
    background-size: cover;
    // the transition doesn't work as the chevron gets remounted
    transition: rotateZ 0.2s ease-in;
}

.mx_RoomSubList_chevronDown {
    transform: rotateZ(0deg);
}

.mx_RoomSubList_chevronUp {
    transform: rotateZ(180deg);
}

.mx_RoomSubList_chevronRight {
    transform: rotateZ(-90deg);
}

.mx_RoomSubList_scroll {
    /* let rooms list grab all available space */
    flex: 0 1 auto;
    padding: 0 15px !important;
}
/*
for browsers that don't support overlay scrollbars,
subtract scrollbar width from right padding on hover when overflowing
so the content doesn't jump when showing the scrollbars
*/
body.mx_scrollbar_nooverlay .mx_RoomSubList_scroll.mx_AutoHideScrollbar_overflow:hover {
    padding-right: calc(15px - var(--scrollbar-width)) !important;
}

.collapsed {
    .mx_RoomSubList_label {
        height: 17px;
        width: 28px; /* collapsed LHS Panel width */
    }

    .mx_RoomSubList_labelContainer {
        width: 28px; /* collapsed LHS Panel width */
    }

    /* Hide the bottom of speech bubble */
    .mx_RoomSubList_badgeHighlight:after {
        display: none;
    }

    .mx_RoomSubList_line {
        display: none;
    }

    .mx_RoomSubList_moreBadge {
        position: static;
        margin-left: 16px;
        margin-top: 2px;
    }

    .mx_RoomSubList_ellipsis {
        height: 20px;
    }

    .mx_RoomSubList_more {
        display: none;
    }
}