riot-web/res/css/views/right_panel/_RoomSummaryCard.scss

/*
Copyright 2020 The Matrix.org Foundation C.I.C.

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_RoomSummaryCard {
    .mx_BaseCard_header {
        text-align: center;
        margin-top: 20px;

        h2 {
            font-weight: $font-semi-bold;
            font-size: $font-18px;
            margin: 12px 0 4px;
        }

        .mx_RoomSummaryCard_alias {
            font-size: $font-13px;
            color: $secondary-fg-color;
        }

        h2, .mx_RoomSummaryCard_alias {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .mx_RoomSummaryCard_avatar {
            display: inline-flex;

            .mx_RoomSummaryCard_e2ee {
                display: inline-block;
                position: relative;
                width: 54px;
                height: 54px;
                border-radius: 50%;
                background-color: #737d8c;
                margin-top: -3px; // alignment
                margin-left: -10px; // overlap
                border: 3px solid $dark-panel-bg-color;

                &::before {
                    content: '';
                    position: absolute;
                    top: 13px;
                    left: 13px;
                    height: 28px;
                    width: 28px;
                    mask-size: cover;
                    mask-repeat: no-repeat;
                    mask-position: center;
                    mask-image: url('$(res)/img/e2e/disabled.svg');
                    background-color: #ffffff;
                }
            }

            .mx_RoomSummaryCard_e2ee_normal {
                background-color: #424446;
                &::before {
                    mask-image: url('$(res)/img/e2e/normal.svg');
                }
            }

            .mx_RoomSummaryCard_e2ee_verified {
                background-color: #0dbd8b;
                &::before {
                    mask-image: url('$(res)/img/e2e/verified.svg');
                }
            }

            .mx_RoomSummaryCard_e2ee_warning {
                background-color: #ff4b55;
                &::before {
                    mask-image: url('$(res)/img/e2e/warning.svg');
                }
            }
        }
    }

    .mx_RoomSummaryCard_aboutGroup {
        .mx_RoomSummaryCard_Button {
            padding-left: 44px;

            &::before {
                content: '';
                position: absolute;
                top: 8px;
                left: 10px;
                height: 24px;
                width: 24px;
                mask-repeat: no-repeat;
                mask-position: center;
                background-color: $icon-button-color;
            }
        }
    }

    .mx_RoomSummaryCard_appsGroup {
        .mx_RoomSummaryCard_Button {
            // this button is special so we have to override some of the original styling
            // as we will be applying it in its children
            padding: 0;
            height: auto;
            color: $tertiary-fg-color;

            .mx_RoomSummaryCard_icon_app {
                padding: 8px 48px 8px 12px;
                text-overflow: ellipsis;
                overflow: hidden;

                .mx_BaseAvatar_image {
                    vertical-align: top;
                    margin-right: 12px;
                }

                span {
                    color: $primary-fg-color;
                }
            }

            .mx_RoomSummaryCard_app_pinToggle,
            .mx_RoomSummaryCard_app_options {
                position: absolute;
                top: 0;
                height: 100%; // to give bigger interactive zone
                width: 24px;
                padding: 10px 4px;
                box-sizing: border-box;
                min-width: 24px; // prevent flexbox crushing

                &:hover {
                    &::after {
                        content: '';
                        position: absolute;
                        height: 24px;
                        width: 24px;
                        top: 6px; // equal to top-margin of parent
                        left: 0;
                        border-radius: 12px;
                        background-color: rgba(141, 151, 165, 0.1);
                    }
                }

                &::before {
                    content: '';
                    position: absolute;
                    height: 16px;
                    width: 16px;
                    mask-repeat: no-repeat;
                    mask-position: center;
                    mask-size: 16px;
                    background-color: $icon-button-color;
                }
            }

            .mx_RoomSummaryCard_app_pinToggle {
                right: 24px;

                &::before {
                    mask-image: url('$(res)/img/element-icons/room/pin-upright.svg');
                }
            }

            .mx_RoomSummaryCard_app_options {
                right: 48px;
                display: none;

                &::before {
                    mask-image: url('$(res)/img/element-icons/room/ellipsis.svg');
                }
            }

            &.mx_RoomSummaryCard_Button_pinned {
                &::after {
                    opacity: 0.2;
                }

                .mx_RoomSummaryCard_app_pinToggle::before {
                    background-color: $accent-color;
                }
            }

            &:hover {
                .mx_RoomSummaryCard_icon_app {
                    padding-right: 72px;
                }

                .mx_RoomSummaryCard_app_options {
                    display: unset;
                }
            }

            &::before {
                content: unset;
            }

            &::after {
                top: 8px; // re-align based on the height change
                pointer-events: none; // pass through to the real button
            }
        }
    }

    .mx_AccessibleButton_kind_link {
        padding: 0;
        margin-top: 12px;
        margin-bottom: 12px;
        font-size: $font-13px;
        font-weight: $font-semi-bold;
    }
}

.mx_RoomSummaryCard_icon_people::before {
    mask-image: url("$(res)/img/element-icons/room/members.svg");
}

.mx_RoomSummaryCard_icon_files::before {
    mask-image: url('$(res)/img/element-icons/room/files.svg');
}

.mx_RoomSummaryCard_icon_share::before {
    mask-image: url('$(res)/img/element-icons/room/share.svg');
}

.mx_RoomSummaryCard_icon_settings::before {
    mask-image: url('$(res)/img/element-icons/settings.svg');
}