element-web/res/css/views/right_panel/_BaseCard.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_BaseCard {
    --BaseCard_EventTile_line-padding-block: 2px;
    --BaseCard_EventTile-spacing-inline: 36px; // TODO: Use a spacing variable
    --BaseCard_header-button-size: 24px;

    padding: 0 $spacing-8;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    flex: 1;

    .mx_BaseCard_header {
        --BaseCard_header_button-margin: $spacing-12;

        margin: $spacing-4 0 $spacing-12;

        > h2 {
            margin: 0 44px; // TODO: Use a spacing variable
            font-size: $font-18px;
            font-weight: $font-semi-bold;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .mx_BaseCard_back,
        .mx_BaseCard_close {
            position: absolute;
            background-color: rgba(141, 151, 165, 0.2);
            width: var(--BaseCard_header-button-size);
            height: var(--BaseCard_header-button-size);
            margin: var(--BaseCard_header_button-margin);
            top: 0;
            border-radius: 50%;

            &::before {
                content: "";
                position: absolute;
                height: inherit;
                width: inherit;
                top: 0;
                left: 0;
                mask-repeat: no-repeat;
                mask-position: center;
                background-color: $header-panel-text-primary-color;
            }
        }

        .mx_BaseCard_back {
            left: 0;
            margin-inline-start: calc(var(--BaseCard_header_button-margin) - $spacing-4);

            &::before {
                transform: rotate(90deg);
                mask-size: 22px;
                mask-image: url('$(res)/img/feather-customised/chevron-down.svg');
            }

            // Header title with the back button
            ~ .mx_BaseCard_header_title {
                width: calc(100% - 60px);
                margin-inline-start: var(--BaseCard_header-button-size);

                .mx_BaseCard_header_title_heading {
                    margin-inline-start: 6px; // TODO: Use a spacing variable
                }
            }
        }

        .mx_BaseCard_close {
            right: 0;
            margin-inline-end: calc(var(--BaseCard_header_button-margin) - $spacing-4);

            &::before {
                mask-image: url('$(res)/img/icons-close.svg');
                mask-size: 8px;
            }
        }

        .mx_BaseCard_header_title {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: calc(100% - 38px);
            height: 24px;
            flex: 1;

            .mx_BaseCard_header_title_heading {
                color: $secondary-content;
                overflow: hidden;
                white-space: nowrap;
                text-overflow: ellipsis;
            }

            .mx_BaseCard_header_title_button--option {
                position: relative;
                width: var(--BaseCard_header-button-size);
                height: var(--BaseCard_header-button-size);

                &::after {
                    content: '';
                    position: absolute;
                    inset-block-start: 0;
                    inset-inline-start: 0;
                    height: 100%;
                    width: 100%;
                    mask-repeat: no-repeat;
                    mask-position: center;
                    mask-image: url("$(res)/img/element-icons/message/overflow-large.svg");
                    background-color: $secondary-content;
                }

                &:hover::after {
                    background-color: $primary-content;
                }
            }
        }
    }

    .mx_AutoHideScrollbar {
        // collapse the margin into a padding to move the scrollbar into the right gutter
        margin-right: -8px;
        padding-right: 8px;
        min-height: 0;
        width: 100%;
        height: 100%;
    }

    .mx_BaseCard_Group {
        margin: $spacing-20 0 $spacing-16;

        & > * {
            margin-left: $spacing-12;
            margin-right: $spacing-12;
        }

        > h1 {
            color: $tertiary-content;
            font-size: $font-12px;
            font-weight: 500;
        }

        .mx_BaseCard_Button {
            padding: 10px; // TODO: Use a spacing variable
            padding-inline-start: $spacing-12;
            margin: 0;
            position: relative;
            font-size: $font-13px;
            height: 20px;
            line-height: 20px;
            border-radius: 8px;
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
            display: flex;

            .mx_BaseCard_Button_sublabel {
                color: $tertiary-content;
                margin-left: auto;
            }

            &:hover {
                background-color: rgba(141, 151, 165, 0.1);
            }

            &.mx_AccessibleButton_disabled {
                padding-right: $spacing-12;
                &::after {
                    content: unset;
                }
            }
        }
    }

    .mx_BaseCard_footer {
        padding-top: $spacing-4;
        text-align: center;
        display: flex;
        justify-content: space-around;

        .mx_AccessibleButton_kind_secondary {
            color: $secondary-content;
            background-color: rgba(141, 151, 165, 0.2);
            font-weight: $font-semi-bold;
            font-size: $font-14px;
        }

        .mx_AccessibleButton_disabled {
            cursor: not-allowed;
        }
    }
}

.mx_FilePanel,
.mx_UserInfo,
.mx_NotificationPanel,
.mx_MemberList {
    &.mx_BaseCard {
        padding: $spacing-32 0 0;

        .mx_AutoHideScrollbar {
            margin-right: unset;
            padding-right: unset;
        }
    }
}

.mx_ContextualMenu_wrapper.mx_BaseCard_header_title {
    .mx_ContextualMenu {
        position: initial;

        span:first-of-type {
            font-weight: $font-semi-bold;
            font-size: inherit;
            color: $primary-content;
        }

        font-size: $font-12px;
        color: $secondary-content;
        padding-top: 10px; // TODO: Use a spacing variable
        padding-bottom: 10px; // TODO: Use a spacing variable

        border: 1px solid $quinary-content;
        box-shadow: 0px 1px 3px rgba(23, 25, 28, 0.05);
    }

    .mx_ContextualMenu_chevron_top {
        left: auto;
        right: 22px; // TODO: Use a spacing variable
        border-bottom-color: $quinary-content;

        &::after {
            content: "";
            border: inherit;
            border-bottom-color: $menu-bg-color;
            position: absolute;
            top: 1px;
            left: -8px;
        }
    }
}