zulip/web/styles/inbox.css

.inbox-container {
    display: flex;
    flex-direction: column;
    background: var(--color-background-inbox);
    font-size: 15px;
    padding: 0;
    border-radius: 4px;
    border-right: 1px solid var(--color-border-inbox);
    border-left: 1px solid var(--color-border-inbox);
    min-height: 100vh;

    #inbox-pane {
        max-width: 100%;
        display: flex;
        flex-direction: column;
        margin: var(--navbar-fixed-height) 25px 0;

        a {
            color: var(--color-text-message-header);
            text-decoration: none;
        }

        .unread_count {
            opacity: 0.7;

            &:hover {
                opacity: 1;
            }
        }

        .search_group {
            position: sticky;
            top: var(--navbar-fixed-height);
            background: var(--color-background-inbox);
            display: flex;
            padding: 15px 0 10px;
            z-index: 1;
        }

        .btn-inbox-filter {
            border: none;
            height: 30px;
            border-radius: 5px;
            background: transparent;
            color: var(--color-text-default);
            padding: 5px 10px;
            margin-left: 10px;

            &:focus {
                background-color: var(--color-background-btn-inbox-focus);
                outline: 0;
            }
        }

        .btn-inbox-selected {
            background-color: var(--color-background-btn-inbox-selected);
        }

        #inbox-filters {
            .zulip-icon-search-inbox {
                position: absolute;
                top: 23px;
                left: 6px;
                color: var(--color-icon-search-inbox);
            }
        }

        #inbox-search {
            white-space: nowrap;
            text-overflow: ellipsis;
            overflow: hidden;
            width: var(--width-inbox-search);
            height: var(--height-inbox-search);
            background-color: var(--color-background-inbox-search);
            border: 1px solid transparent;
            padding-right: 20px;
            padding-left: 30px;
            font-size: 14px;
            font-style: normal;
            font-weight: 400;
            line-height: 17px;
            border-radius: 4px;

            &:focus {
                outline: none;
                background: var(--color-background-inbox-search-focus);
                border: 1px solid var(--color-border-inbox-search-focus);
            }
        }

        #inbox-list {
            overflow: hidden;
            border-radius: 5px;
            border: 1px solid hsl(0deg 0% 0% / 20%);
            margin-bottom: var(--max-unexpanded-compose-height);

            .inbox-focus-border {
                display: flex;
                min-height: 30px;
                border: 2px solid transparent;
                border-radius: 3px;
                box-sizing: border-box;
            }

            .inbox-empty-text {
                display: none;
                font-style: italic;
                opacity: 0.8;
            }

            .inbox-header {
                display: block;
                height: 30px;

                .inbox-focus-border {
                    height: 30px;
                }

                .inbox-left-part {
                    grid-template: auto / auto min-content;
                    grid-template-areas: "header_name unread_count";
                }

                .inbox-header-name {
                    grid-area: header_name;
                    display: flex;
                    align-items: center;
                    overflow: hidden;
                    padding: 1px 6px;
                    outline: 0;

                    & a {
                        margin: 0 4px;
                        padding: 1px 0;
                        text-overflow: ellipsis;
                        overflow: hidden;
                    }

                    &:focus a {
                        box-shadow: inset 0 -3px 0 var(--color-outline-focus);
                    }
                }

                &:focus {
                    outline: 0;

                    .inbox-focus-border {
                        border-color: var(--color-outline-focus);
                    }

                    .toggle-inbox-header-icon {
                        opacity: 1;
                    }
                }
            }

            .fa-group {
                margin-right: 7px;
            }

            .fa-lock {
                margin-right: 3px;
            }

            .fa-envelope,
            .stream-privacy.filter-icon {
                font-size: 16px;
                margin: 0;
                margin-right: 1px;
            }

            .fa-envelope {
                position: relative;
                top: -1px;
                margin-right: 4px;
            }

            .collapsible-button {
                &:hover {
                    cursor: pointer;
                }

                .zulip-icon-arrow-down {
                    font-size: 16px;
                    padding: 5px 4px;
                    margin-right: 9px;
                    opacity: 0.5;
                }

                .icon-collapsed-state {
                    transform: rotate(270deg);
                }
            }

            .user_circle {
                /* size of the user activity circle */
                min-width: 6px;
                height: 6px;
                margin-right: 5px;
                top: 0;
            }

            .zulip-icon-bot {
                font-size: 11px;
                margin-left: -2px;
                margin-right: 5px;
            }

            .inbox-row {
                display: block;
                background-color: var(--color-background-inbox-row);

                &:hover {
                    background: var(--color-background-inbox-row-hover);
                }

                &:focus {
                    .inbox-focus-border {
                        border: 2px solid var(--color-outline-focus);
                        border-radius: 3px;
                    }

                    outline: 0;
                    padding: 0;
                }

                .inbox-left-part {
                    grid-template: auto / min-content auto min-content;
                    grid-template-areas: "match_topic_and_dm_start recipient_info unread_count";
                }

                .fake-collapse-button,
                .inbox-topic-container .user_circle {
                    grid-area: match_topic_and_dm_start;
                }

                .recipient_info,
                .inbox-topic-name {
                    grid-area: recipient_info;
                }
            }

            .unread_count {
                grid-area: unread_count;
                margin-right: 5px;
                margin-left: 10px;
                align-self: center;
            }

            .stream-privacy {
                display: flex;
                align-items: center;
                margin-right: 4px;
                margin-left: 17px;

                .zulip-icon {
                    line-height: 14px;
                    font-size: 16px;
                    height: 16px;
                    width: 16px;
                }
            }

            .inbox-topic-name {
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
                width: 100%;

                & a {
                    padding: 1px 0;
                }
            }

            .inbox-left-part-wrapper {
                display: flex;
                width: 50%;
            }

            #inbox-direct-messages-container {
                /* Since a direct message row can have span to multiple lines,
                   having an underline focus will not work very well.
                */
                .inbox-row:focus {
                    box-shadow: inset 0 0 0 2px var(--color-outline-focus);
                }
            }

            #inbox-direct-messages-container .inbox-left-part {
                padding: 3px 0;
            }

            #inbox-direct-messages-container .inbox-left-part,
            .inbox-topic-container .inbox-left-part {
                /* 50px - space occupied by user circle icon */
                padding-left: 37px;
            }

            .inbox-left-part {
                width: 100%;
                display: grid;
                align-items: center;

                &:hover {
                    cursor: pointer;
                }

                .recipients_info {
                    display: flex;
                    flex-wrap: wrap;
                    column-gap: 10px;
                    grid-area: recipient_info;

                    .user_block {
                        display: flex;
                        align-items: center;
                        white-space: nowrap;
                    }

                    .recipients_name {
                        white-space: nowrap;
                    }
                }
            }
        }

        #inbox_filter_mute_toggle {
            font-size: 16px;
            width: 16px;
            height: 16px;
            position: relative;
            top: 1px;
        }
    }
}

#inbox-view {
    display: none;
    position: relative;

    #inbox-dm-header {
        background-color: var(--color-background-private-message-header);
    }

    .hidden_by_filters,
    .collapsed_container {
        display: none !important;
    }
}