element-web-Github/res/css/views/right_panel/_ExtensionsCard.pcss

/*
Copyright 2024 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_ExtensionsCard {
    --cpd-separator-inset: var(--cpd-space-4x);
    --cpd-separator-spacing: var(--cpd-space-4x);

    .mx_BaseCard_header {
        /* Hide the line between the header and the body of the card */
        border-block-end: none;

        /* Styling for the "Add extensions" button */
        button {
            width: 100%;
        }
    }

    .mx_AutoHideScrollbar {
        padding: 0 var(--cpd-space-4x);
        box-sizing: border-box;
    }

    .mx_ExtensionsCard_container {
        text-align: center;
        margin: $spacing-20 var(--cpd-space-4x) 0;
    }

    .mx_ExtensionsCard_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-content;
        position: relative;

        .mx_WidgetAvatar {
            flex-shrink: 0;
        }

        .mx_ExtensionsCard_icon_app {
            padding: var(--cpd-space-2x) var(--cpd-space-12x) var(--cpd-space-2x) var(--cpd-space-3x);
            text-overflow: ellipsis;
            overflow: hidden;
            display: flex;
            align-items: center;

            p {
                margin: 0 var(--cpd-space-3x);
                color: $primary-content;
            }
        }

        .mx_ExtensionsCard_app_pinToggle,
        .mx_ExtensionsCard_app_options {
            position: absolute;
            top: 0;
            height: 100%; /* to give bigger interactive zone */
            width: 24px;
            padding: var(--cpd-space-3x) var(--cpd-space-1x);
            box-sizing: border-box;
            min-width: 24px; /* prevent flexbox crushing */

            &:hover {
                &::after {
                    content: "";
                    position: absolute;
                    height: 24px;
                    width: 24px;
                    top: var(--cpd-space-2x); /* equal to padding-top 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_ExtensionsCard_app_pinToggle {
            right: 8px;

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

        .mx_ExtensionsCard_app_options {
            right: 32px; /* 24 + 8 */
            &::before {
                mask-image: url("$(res)/img/element-icons/room/ellipsis.svg");
            }
        }

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

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

        &::before {
            content: unset;
        }

        &::after {
            top: var(--cpd-space-2x); /* re-align based on the height change */
            pointer-events: none; /* pass through to the real button */
        }
    }

    /* Set layout for everyone button */
    a[data-kind="primary"] {
        margin-top: var(--cpd-space-10x);
    }

    .mx_EmptyState::before {
        /* Overlap the Add extensions button */
        top: -76px;
    }
}