body,
html {
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: hidden;

    touch-action: manipulation;
}

#app-loading.loaded {
    display: none !important; /* We are now loaded, by definition. */
}

body {
    font-size: 14px;
    line-height: calc(20 / 14);
    font-family: "Source Sans 3", sans-serif;
}

/* Common background color */
body,
#message_view_header_underpadding {
    background-color: hsl(0, 0%, 100%);
    transition: background-color 200ms linear;
}

:root {
    color-scheme: light;

    --color-default-text: hsl(0, 0%, 15%);
    --color-date: hsl(0, 0%, 15%, 0.75);

    /*
    This is the header, aka the navbar.
    */
    --header-height: 40px;

    @media (width < $sm_min) {
        --header-height: 30px;
    }

    /*
    We have a 10px gutter below the header,
    which often needs to be respected by both
    the elements above it and below it on
    the y-axis, due to absolute positioning.
    */
    --header-padding-bottom: 10px;

    /*
    Our sidebars (and anything that top-align
    with them) go beneath the header.
    */
    --sidebar-top: calc(var(--header-height) + var(--header-padding-bottom));
    --left-sidebar-collapse-widget-gutter: 10px;
    --left-sidebar-width: 270px;
    --right-sidebar-width: 250px;
}

:root.dark-theme {
    --color-default-text: hsl(0, 0%, 100%);
    --color-date: hsl(0, 0%, 100%, 0.75);
}

@media (prefers-color-scheme: dark) {
    :root.color-scheme-automatic {
        @extend :root.dark-theme;
    }
}

input,
button,
select,
textarea {
    font-family: "Source Sans 3", sans-serif;
    /* Disable bootstrap size CSS; we want to use our default font size on
       body for input elements. */
    line-height: normal;
    font-size: inherit;
}

blockquote p {
    font-weight: normal;
}

a {
    cursor: pointer;

    &.message_label_clickable:hover {
        cursor: pointer;
        color: hsl(200, 100%, 40%);
    }
}

code,
pre {
    font-family: "Source Code Pro", monospace;
}

.no-select {
    user-select: none;
}

.auto-select {
    user-select: auto;
}

.text-select {
    user-select: text;
}

p.n-margin {
    margin: 10px 0 0;
}

.small-line-height {
    line-height: 1.1;
}

.float-left {
    float: left;
}

.float-right {
    float: right;
}

.float-clear {
    clear: both;
}

.no-margin {
    margin: 0;
}

.history-limited-box {
    color: hsl(16, 60%, 45%);
    border: 1px solid hsl(16, 60%, 45%);
    box-shadow: 0 0 2px hsl(16, 60%, 45%);
}

.all-messages-search-caution {
    border: 1px solid hsla(192, 19%, 75%, 0.2);
    box-shadow: 0 0 2px hsla(192, 19%, 75%, 0.2);
}

.history-limited-box,
.all-messages-search-caution {
    border-radius: 4px;
    display: none;
    font-size: 16px;
    margin: 0 auto 12px;
    padding: 5px;
    /* Difference should be 16px to accommodate the icon. */
    /* This emulates hanging indent. */
    padding-left: 26px;
    text-indent: -10px;

    & i {
        margin: 0 3px 0 1px;
    }

    & p {
        margin: 0;
        padding: 4px;
    }
}

.bottom-messages-logo {
    display: none;
}

.top-messages-logo {
    /* Since padding under message header is not transparent
       we need to position it below the padding. */
    padding-top: var(--header-padding-bottom);
}

.alert-zulip-logo,
.top-messages-logo,
.bottom-messages-logo {
    width: 24px;
    height: 24px;
    margin: 0 auto 12px;

    & svg {
        & circle {
            fill: hsl(0, 0%, 27%);
            stroke: hsl(0, 0%, 27%);
        }

        & path {
            fill: hsl(0, 0%, 100%);
            stroke: hsl(0, 0%, 100%);
        }
    }
}

#feedback_container {
    display: none;
    position: absolute;
    width: 400px;
    top: 0;
    left: calc(50vw - 220px);
    padding: 15px;

    background-color: hsl(0, 0%, 98%);
    border-radius: 5px;
    box-shadow: 0 0 30px hsla(0, 0%, 0%, 0.25);
    z-index: 110;

    animation-name: pulse;
    animation-iteration-count: infinite;
    animation-duration: 2s;

    transition-property: top, bottom;
    transition-duration: 0.5s;

    &.show {
        top: 50px;
    }

    & h3 {
        font-size: 16pt;
        margin-top: 2px;
    }

    .exit-me {
        font-size: 20pt;
        font-weight: 200;
        margin: 0 0 0 10px;
        cursor: pointer;
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 30px hsla(0, 0%, 0%, 0.35);
    }

    50% {
        box-shadow: 0 0 30px hsla(0, 0%, 0%, 0.15);
    }

    100% {
        box-shadow: 0 0 30px hsla(0, 0%, 0%, 0.35);
    }
}

.fade-in-message {
    animation-name: fadeInMessage;
    animation-duration: 1s;
    animation-iteration-count: 1;

    .message_edit_notice {
        animation-name: fadeInEditNotice;
        animation-duration: 1s;
        animation-iteration-count: 1;
    }
}

.message_edit_notice_hover:hover {
    opacity: 1;
}

.header {
    position: fixed;
    z-index: 102; /* Needs to be higher than .alert-bar-container */
    width: 100%;
    height: var(--header-height);
    padding-bottom: var(--header-padding-bottom);
    /* Since the headers are sticky, we need non-transparent background. */
    background-color: hsl(0, 0%, 100%);
}

#top_navbar {
    border-bottom: 1px solid hsla(0, 0%, 0%, 0.2);
}

#navbar_alerts_wrapper {
    font-size: 1rem;
    position: relative;

    .alert {
        /* Since alerts are only rendered into the DOM when they are first
           displayed, display: block is the right default for this setting. */
        display: block;
        margin: 0;
        padding-top: 12px;
        padding-bottom: 12px;

        border: none;
        border-radius: 0;

        text-align: center;
        text-shadow: none;
        color: hsl(0, 0%, 100%);

        &.alert-info {
            background-color: hsl(170, 46%, 54%);

            &.red {
                background-color: hsl(0, 46%, 54%);
            }
        }

        .close {
            line-height: 24px;
            position: absolute;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
        }

        .alert-link {
            color: hsl(169, 100%, 88%);
            font-weight: 600;
        }

        &.red .alert-link {
            color: hsl(0, 100%, 88%);
        }

        .buttons .alert-link {
            margin: 0 5px;
        }
    }
}

#gear-menu .dropdown-menu {
    .org-name,
    .org-url {
        padding: 0 20px;
    }

    .org-info {
        text-align: center;

        & a {
            white-space: normal;
        }
    }

    .org-name {
        font-size: large;
        font-weight: bold;
    }

    .org-url {
        line-height: 100%;
        color: hsl(0, 0%, 52%);
    }

    .org-version {
        padding-top: 3px;
        white-space: normal;
    }

    .org-upgrade {
        color: hsl(226, 82%, 60%);

        & a {
            padding: 0;
        }
    }

    .org-plan,
    .org-upgrade {
        & a {
            line-height: 16px;
        }
    }

    .plan-separator {
        line-height: 8px;
    }

    .small-font-size {
        font-size: 12px;
    }
}

.app {
    width: 100%;
    height: 100%;
    overflow-y: scroll;
    z-index: 99;
    -webkit-overflow-scrolling: touch;
}

.app-main,
.header-main {
    width: 100%;
    /* `max-width` is changed based on `fluid_layout_width` setting in
       `scroll_bar.js`. User may or may not see a flash of mispositioned content
       based on how quickly the JS code is executed. */
    max-width: 1400px;
    min-width: 950px;
    margin: 0 auto;
    padding: 0;
    position: relative;
    background-color: hsl(0, 0%, 100%);
}

.column-right {
    width: var(--right-sidebar-width);
    max-width: var(--right-sidebar-width);
    position: absolute;
    right: 0;
    top: 0;

    .spectator_login_buttons {
        display: flex;
        justify-content: space-evenly;
        position: absolute;
        top: 10px;
        /* width of right column - width of gear icon(250px - 45px) */
        width: 205px;

        & a {
            font-size: calc(16em / 14);
            font-weight: 600;
            color: hsl(0, 0%, 20%);

            &:hover {
                text-decoration: none;
                color: hsl(0, 0%, 0%);
            }

            & i {
                margin-right: 3px;
            }
        }

        .divider {
            color: hsl(0, 0%, 88%);
            font-size: 20px;
            line-height: 1;
        }
    }

    .spectator_narrow_login_button {
        position: absolute;
        top: 0;
        right: 0;
        /* Height of navbar in tablet sizes */
        height: 40px;
        /* Width of userlist-toggle button. */
        width: 45px;
        border-left: 1px solid hsl(0, 0%, 88%);

        .login_button {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100%;
            opacity: 0.5;

            &:hover {
                opacity: 1;
                text-decoration: none;
            }

            & i {
                color: hsl(0, 0%, 20%);
                font-size: 1.6em;
            }
        }
    }
}

.column-left {
    width: var(--left-sidebar-width);
    max-width: var(--left-sidebar-width);
    position: absolute;
    left: 0;
    top: 0;
}

.app-main {
    height: 100%;
    min-height: 100%;

    .column-left .left-sidebar,
    .column-right .right-sidebar {
        position: fixed;
        margin-top: var(--sidebar-top);
        z-index: 100;
    }

    .column-left .left-sidebar {
        width: var(--left-sidebar-width);
        padding-left: var(--left-sidebar-collapse-widget-gutter);
    }

    .column-right .right-sidebar {
        padding-left: 10px;
        width: 240px;
    }

    .column-middle {
        min-height: 100%;
        /* We need `overflow-y: visible` for sticky headers to work. */
    }
}

.column-middle,
#compose-content {
    margin-right: var(--right-sidebar-width);
    margin-left: calc(
        var(--left-sidebar-width) + var(--left-sidebar-collapse-widget-gutter)
    );
    position: relative;
}

textarea,
input {
    font-family: "Source Sans 3", sans-serif;
}

/* Override Bootstrap's fixed sizes for various elements */
textarea,
label {
    font-size: inherit;
    line-height: inherit;
}

/* Bootstrap's focus outline uses -webkit-focus-ring-color which doesn't exist in Firefox */
a:not(:active):focus,
button:focus,
.new-style label.checkbox input[type="checkbox"]:focus ~ span,
i.fa:focus,
i.zulip-icon:focus,
.auto-select:focus,
[role="button"]:focus {
    outline: 2px solid hsl(215, 47%, 50%);
    /* TODO: change solid to auto once the Chromium bug #1105822 is fixed */
}

/* List of text-like input types taken from Bootstrap */
input {
    &[type="text"],
    &[type="password"],
    &[type="datetime"],
    &[type="datetime-local"],
    &[type="date"],
    &[type="month"],
    &[type="time"],
    &[type="week"],
    &[type="number"],
    &[type="email"],
    &[type="url"],
    &[type="search"],
    &[type="tel"],
    &[type="color"] {
        font-size: inherit;
        height: 1.4em;
    }
}

li,
.table th,
.table td {
    line-height: inherit;
}

.btn {
    font-size: inherit;
    height: auto;
    line-height: 100%;
}

/* Classes which style copy buttons */
.copy_button_base {
    outline-color: hsl(0, 0%, 73%);
    height: 18px;
    width: 10px;
    padding: 6px;
    display: block;
    /* The below two avoids the padded element from displaying
    its own border and background color */
    border: none;
    background-clip: content-box;
    /* The z-index here ensures that the copy-message
    icon is clickable and is needed because of reduced
    opacity of readonly textarea */
    z-index: 2;

    &:hover svg path {
        fill: hsl(200, 100%, 40%);
    }
}

.copy_message {
    position: relative;
    top: 27px;
    left: -10px;
    margin-top: -24px;
}

#copy_generated_invite_link {
    position: relative;
    margin-right: -32px;
    margin-top: -1px;
    padding: 6px 3px 6px 13px;

    /* This property nullifies the box-shadow rendered by .btn class */
    &:active {
        box-shadow: none;
    }
}

#clipboard_image {
    margin-top: -5px;
    margin-left: -8px;
}

/* Classes for hiding and showing controls */

.notdisplayed {
    display: none !important;
}

.notvisible {
    visibility: hidden !important;
    width: 0 !important;
    min-width: 0 !important;
    min-height: 0 !important;
    height: 0 !important;
    overflow: hidden !important;
    position: absolute !important;
}

/* Lighter strong */

strong {
    font-weight: 600;
}

.preserve_spaces {
    white-space: pre-wrap;
}

.sp-input {
    width: calc(100% - 14px);
    box-sizing: initial !important;
}

.logout {
    white-space: nowrap;
}

.sidebar-title {
    color: hsl(0, 0%, 43%);
    font-size: inherit;
    font-weight: normal;
    display: inline;
}

.tooltip {
    &.in {
        font-size: 12px;
        line-height: 1.3;

        opacity: 1;

        &.left {
            margin-left: -12px;
            margin-top: 3px;
        }
    }

    .tooltip-inner {
        background-color: hsla(0, 0%, 7%, 0.8);
        padding: 3px 5px;
    }

    /*
    Since hover and click are activated together on touchscreen
    devices, the hover state persists until the next click, creating
    awkward UI where the tooltip sticks around forever :(.

    To resolve this, we just hide the tooltip for touch-events on
    touch-enabled devices resolving the above problem.  This means
    that tooltips will never appear on touchscreen devices, but that's
    probably a reasonable tradeoff here.

    Source: https://drafts.csswg.org/mediaqueries-4/#mf-interaction
    */

    @media (hover: none) {
        visibility: hidden !important;
    }
}

.buddy_list_tooltip_content {
    text-align: left;
    word-wrap: break-word;
}

#message_edit_tooltip {
    float: right;
    color: hsl(0, 0%, 0%);
    margin-top: 2px;
    margin-left: 6px;
    opacity: 0.5;
    cursor: pointer;

    &:hover {
        opacity: 1;
    }
}

.narrow-filter {
    display: block;
    position: relative;
}

.message_header_stream a.message_label_clickable {
    color: inherit;
}

#gear-menu .light-theme {
    display: none;
}

/* .dropdown-menu from v2.3.2
   + https://github.com/zulip/zulip/commit/7a3a3be7e547d3e8f0ed00820835104867f2433d
   basic idea of this fix is to remove decorations from :hover and apply them only
   on :focus. */
.typeahead-menu {
    & li {
        & a {
            display: block;
            padding: 3px 20px;
            clear: both;
            font-weight: normal;
            line-height: 20px;
            color: hsl(0, 0%, 20%);
            white-space: nowrap;

            &:hover {
                text-decoration: none;
            }

            &:focus {
                color: hsl(0, 0%, 100%);
                text-decoration: none;
                background-color: hsl(200, 100%, 38%);
                background-image: linear-gradient(
                    to bottom,
                    hsl(200, 100%, 40%),
                    hsl(200, 100%, 35%)
                );
            }

            /* styles defined for user_circle here only deal with positioning of user_presence_circle
            in typeahead list in order to ensure they are rendered correctly in in all screen sizes.
            Most of the style rules related to color, gradient etc. which are generally common throughout
            the app are defined in user_circles.css and are not overridden here. */
            .user_circle {
                width: 8px;
                height: 8px;
                margin: 0 5px 0 -6px;
                position: relative;
                top: 6px;
                right: 8px;
                display: inline-block;
            }
        }
    }

    .active > a {
        color: hsl(0, 0%, 100%);
        text-decoration: none;
        background-color: hsl(200, 100%, 38%);
        background-image: linear-gradient(
            to bottom,
            hsl(200, 100%, 40%),
            hsl(200, 100%, 35%)
        );
        outline: 0;

        .user_circle_empty {
            border-color: hsl(0, 0%, 25%);
        }
    }

    .active > a:hover {
        text-decoration: none;
    }
}

/* Copied from bootstrap 2.1.1 CSS for dropdown-menu li > a:focus */
li.actual-dropdown-menu > a:focus {
    color: hsl(0, 0%, 100%);
    text-decoration: none;
    background-color: transparent;
    background-image: none;
    filter: none;
    outline: 0;
}

li.actual-dropdown-menu i {
    /* In gear menu, make icons the same width so labels line up. */
    display: inline-block;
    width: 14px;
    text-align: center;
    margin-right: 3px;
}

#gear_menu_about_zulip {
    .white_zulip_icon_without_text {
        position: relative;
        top: 3px;
        width: 14px;
        height: 14px;
        margin-right: 3px;
        filter: invert(20%) sepia(11%) saturate(0%) hue-rotate(272deg)
            brightness(20%) contrast(95%);
    }

    .about_zulip_text {
        position: relative;
        top: 1.4px;
    }

    :hover {
        .white_zulip_icon_without_text {
            filter: none;
        }
    }
}

.settings-dropdown-cog {
    padding: 6px 12px;
}

td.pointer {
    vertical-align: top;
    padding-top: 10px;
    background-color: hsl(0, 0%, 100%);
}

.new_messages {
    background-color: hsl(194, 53%, 79%);
}

.new_messages,
.new_messages_fadeout {
    transition: all 3s ease-in-out;
}

.include-sender {
    .message_edit_notice {
        display: inline-block;
        vertical-align: top;
        line-height: 14px;
        /* A bit of margin here helps these not look associated with the name. */
        margin-left: 4px;
        position: static;
        padding: 0;
        width: auto;
    }
}

.sender-status {
    display: inline-block;
    margin: 8px 0 8px -3px;
    /* this normalizes the margin of the emoji reactions with normal messages. */
    padding-bottom: 5px;
    vertical-align: middle;

    position: relative;
    max-width: calc(100% - 50px);

    .message_edit_notice {
        vertical-align: middle;
    }

    &.sender-status-edit {
        /* Hackery to place the textarea for the message edit form nicely
           for /me messages. */

        vertical-align: top;
        line-height: 0;

        .message_edit_notice {
            line-height: 0;
        }
    }
}

.message_edit_notice {
    font-size: 10px;
    opacity: 0.5;
    user-select: none;
    white-space: nowrap;
    overflow-x: hidden;
    overflow-x: clip;
}

.messagebox-content .message_time {
    display: block;
    font-size: 12px;
    font-weight: normal;
    text-align: right;
    opacity: 0.6;
    color: var(--color-default-text);
    font-feature-settings: "pnum" on, "lnum" on;
    letter-spacing: 0.02em;
    /* Disable blue link styling for the message timestamp link. */
    &:hover {
        text-decoration: none;
        color: var(--color-default-text);
    }
}

/* The way this overrides the menus with a background-color and a high
   z-index is kinda hacky, and requires some annoying color-matching,
   but it works. */
.alert-msg {
    color: hsl(170, 48%, 54%);
    background-color: hsl(0, 0%, 100%);
    z-index: 999;
    font-weight: 400;
    display: none;
}

.status-time {
    top: 8px !important;
}

.message_controls {
    display: inline-block;
    z-index: 1;

    /* This is a bit tricky; we need to reserve space for the message
       controls even when the message isn't hovered, so that hover
       doesn't disturb the layout.  Usually that would be just
       visibility: hidden, but that cannot be animated, so we set
       opacity as well, which can be animated. */
    .message_control_button {
        opacity: 0;
        visibility: hidden;
        transition: all 0.2s ease;
        width: 16px;
        text-align: center;
        display: inline-block;
        position: relative;
        color: hsl(0, 0%, 73%);

        > i {
            vertical-align: middle;
        }
    }

    .actions_hover {
        line-height: 1;

        .zulip-icon-ellipsis-v-solid {
            padding: 2px 5.33px;
            outline: none;
        }
    }

    /* Tooltips should not follow the width restrictions of their parent element. */
    [data-tippy-root] {
        width: max-content;
        word-wrap: unset;
    }

    > .reaction_button {
        &:hover {
            color: hsl(200, 100%, 40%);
        }
    }

    > .view_read_receipts {
        font-size: 14px;
        height: 16px;

        &:hover {
            color: hsl(200, 100%, 40%);
        }
    }

    .edit_content {
        width: 12px;

        &:hover {
            cursor: pointer;
            color: hsl(200, 100%, 40%);
        }
    }

    &.sender-status-controls {
        top: 8px;
    }

    .message_failed {
        display: inline-flex;
        justify-content: space-between;
        cursor: pointer;
        position: relative;
        vertical-align: middle;
        padding-left: 2px;

        &.hide {
            display: none;
        }

        .rotating {
            display: inline-block;
            outline: none;

            animation: rotate 1s infinite linear;
        }

        .failed_message_action {
            opacity: 1 !important;
            color: hsl(0, 100%, 50%);
            font-weight: bold;
            padding: 1px;
        }

        .message_control_button {
            visibility: inherit;
        }
    }

    .star_container {
        &:not(.empty-star) {
            color: hsl(106, 77%, 29%);

            /* Opacity/visibility as though the message is hovered. */
            opacity: 1 !important;
            visibility: visible !important;
        }
    }
}

.star {
    &:hover {
        cursor: pointer;
        color: hsl(153, 80%, 25%);
    }
}

.messagebox {
    position: relative;
    word-wrap: break-word;
    cursor: pointer;
    vertical-align: top;
    border: none;

    &:hover .message_controls,
    &:focus-within .message_controls,
    &:hover .message_failed,
    &:focus-within .message_failed {
        .empty-star:hover {
            cursor: pointer;
        }

        > div {
            opacity: 1;
            visibility: visible;
        }
    }
}

.message_header {
    vertical-align: middle;
    text-align: left;
    /* We can overflow-y if the font size gets big */
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 600;
    line-height: 14px;
    position: relative;
    z-index: 0;
}

.message_list {
    .recipient_row {
        border-bottom: 1px solid hsl(0, 0%, 88%);
        /* This value should be in sync with `margin_between_recipient_rows`
           in `message_list_view`. */
        margin-bottom: 10px;
    }

    .message_header {
        position: sticky;
        top: var(--sidebar-top);
        z-index: 3;
        box-shadow: 0 -1px 0 0 hsl(0, 0%, 100%);

        &.sticky_header {
            .recipient_row_date {
                display: block;
            }
        }
    }
}

.stream_label {
    display: inline-block;
    padding: 4px 6px 3px;
    font-weight: normal;
    height: 17px;
    line-height: 17px;
    border-color: hsla(0, 0%, 0%, 0) hsla(0, 0%, 0%, 0) hsla(0, 0%, 0%, 0)
        hsl(0, 0%, 88%);
    background-color: hsl(0, 0%, 88%);
    border-width: 0;
    position: relative;
    text-decoration: none;

    .recipient-row-stream-icon {
        font-size: 12px;
        line-height: 12px;
    }

    .zulip-icon.zulip-icon-globe {
        position: relative;
        top: 1px;
    }

    &:hover {
        text-decoration: none;
    }

    &::after {
        left: 100%;
        top: 50%;
        content: " ";
        height: 0;
        width: 0;
        position: absolute;
        pointer-events: none;
        margin-top: -11px;
        border-style: solid;
        border-width: 11px 0 11px 5px;
        border-color: inherit;
        z-index: 2;
        transform: scale(0.9999);
    }
}

.stream_topic {
    display: inline-block;
    padding: 3px 3px 2px 9px;
    height: 17px;
    line-height: 17px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.recipient_bar_controls {
    display: flex;
    flex-grow: 1;
    align-items: center;
}

.recipient_row_date {
    color: var(--color-date);
    font-size: calc(12em / 14);
    padding: 0 10px;
    text-align: right;
    display: flex;
    align-items: center;
    font-style: normal;
    font-weight: 600;
    line-height: 17px; /* identical to box height, or 131% */
    letter-spacing: 0.04em;
    text-transform: uppercase;

    &.hide-date {
        display: none;
    }
}

.recipient_bar_icon {
    padding-left: 4px;
    padding-right: 4px;
}

#mark_as_read_turned_off_banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 8px 8px 14px;
    column-gap: 10px;

    #mark_as_read_turned_off_content {
        margin: 0;
        flex-grow: 1;
    }

    #mark_as_read_controls {
        display: flex;
    }

    #mark_as_read_close {
        align-self: flex-start;
        margin-top: -5px;
        /* override bootstrap */
        top: 0;
        right: 0;
        position: static;
    }
}

.copy-paste-text {
    /* Hide the text that we want copy paste to capture */
    position: absolute;
    text-indent: -99999px;
    float: left;
    width: 0;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(359deg);
    }
}

@keyframes fadeInMessage {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

@keyframes fadeInEditNotice {
    0% {
        transform: translateX(-10px);
    }

    100% {
        transform: translateX(0);
    }
}

.message_header_private_message {
    background-color: hsl(0, 0%, 100%);

    .message_label_clickable {
        background-color: hsl(0, 0%, 27%);
        display: inline-block;
        padding: 3px 6px 2px;
        font-weight: normal;
        height: 17px;
        line-height: 17px;
        border-left-color: hsl(0, 0%, 27%);
    }

    /* Base color backgrounds for message boxes,
       private messages, mentions, and unread messages */

    .message-header-contents {
        background-color: hsla(192, 19%, 75%, 0.2);
        box-shadow: inset 1px 1px 0 hsl(0, 0%, 88%);
    }
}

.private-message {
    .alert-msg {
        background-color: hsl(192, 20%, 95%);
    }

    .messagebox,
    .date_row {
        background-color: hsla(192, 19%, 75%, 0.2);
        /* The 5th parameter here is a spread-radius, which, when negative,
         * causes the shadow to shrink (be smaller than the target
         * element), resulting in a visual width of 3px-1px=2px. This
         * is a workaround for a regression found in Electron
         * v18.3.15+ where the box-shadow with spread-radius >= 0
         * would cause horizontal separator lines to appear between
         * messages in the color of the left ruler. The root cause of
         * that regression is yet unknown.
         *
         * Similar CSS for stream messages is present directly in the
         * Handlebars templates, since the color used there is the
         * stream's configured color.
         */
        box-shadow: inset 3px 0 0 -1px hsl(0, 0%, 27%),
            -1px 0 0 0 hsl(0, 0%, 27%);
    }
}

.message-header-contents {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-right: 1px solid hsl(0, 0%, 88%);
    background-color: hsl(0, 0%, 88%);
}

.group_mention .messagebox,
.direct_mention .messagebox {
    background-color: hsl(8, 94%, 94%);
}

.recipient_row .message_row:first-child .unread_marker {
    top: 0;
}

.unread_marker {
    display: block;
    position: absolute;
    height: 100%;
    left: 2px;
    top: 0;
    opacity: 0;
    z-index: 2;
    bottom: 1px;
    transition: all 0.3s ease-out;

    &.slow_fade {
        transition: all 2s ease-out;
    }

    &.fast_fade {
        transition: all 0.3s ease-out;
    }
}

.unread-marker-fill {
    background-color: hsl(107, 74%, 29%);
    width: 3px;
    height: 100%;
}

.unread .unread_marker {
    transition: all 0.3s ease-out;
    opacity: 1;
}

.message_header + .selected_message {
    /* Sticky message header overlaps 1px with the box-shadow, so we add another
       2px wide box-shadow 1px below from top to compensate for that. */
    .messagebox-content {
        box-shadow: inset 0 1px 0 2px hsl(215, 47%, 50%),
            inset 0 0 0 2px hsl(215, 47%, 50%), 0 0 0 1px hsl(215, 47%, 50%);
    }
}

.selected_message {
    .messagebox {
        z-index: 1;
    }

    .messagebox-content {
        box-shadow: inset 0 0 0 2px hsl(215, 47%, 50%),
            0 0 0 1px hsl(215, 47%, 50%);
    }
}

.message_sender {
    & i.zulip-icon.zulip-icon-bot {
        font-size: 12px;
    }
}

.sender_name {
    display: inline-block;
    font-weight: 700;
}

.sender_name-in-status {
    margin-right: 3px;
    font-weight: 700;
}

.sender_name_hovered {
    .sender_name,
    .sender_name-in-status {
        color: hsl(200, 100%, 40%);
    }
}

.actions_hover:hover {
    color: hsl(200, 100%, 40%);
}

.always_visible_topic_edit,
.on_hover_topic_read,
.on_hover_topic_unmute {
    opacity: 0.7;

    &:hover {
        cursor: pointer;
        opacity: 1;
    }
}

.on_hover_topic_edit,
.on_hover_topic_unresolve,
.on_hover_topic_resolve,
.on_hover_topic_mute {
    opacity: 0.2;

    &:hover {
        cursor: pointer;
        opacity: 0.7;
    }
}

/* Make the action icon on the message row
   always visible while the popover is open */
.has_actions_popover .actions_hover {
    visibility: visible !important;
    pointer-events: all !important;
    opacity: 1 !important;

    & i:focus {
        /* Avoid displaying a focus outline outside the popover on the \vdots
           icon when opened via the mouse. */
        outline: 0 !important;
    }
}

.has_actions_popover .info {
    opacity: 1;
    visibility: visible;
}

/* Brighten text because of the dark background */
.dark_background a,
.dark_background a:hover,
a.dark_background:hover,
.dark_background {
    color: hsl(0, 0%, 100%) !important;
}

.dark_background a.message_label_clickable:hover {
    color: hsl(200, 99%, 60%);
}

.small {
    font-size: 80%;
}

.tiny {
    font-size: 60%;
}

.settings-forgot-password {
    display: inline-block;
    position: relative;
    color: hsl(0, 0%, 73%);
    bottom: 4px;
}

div.message_table {
    border-collapse: separate;
    margin-left: auto;
    display: none;
    width: 100%;
}

.message_row {
    position: relative;
    border-left: 1px solid hsla(0, 0%, 0%, 0.1);
    border-right: 1px solid hsla(0, 0%, 0%, 0.1);

    &.selected_message {
        z-index: 2;
    }

    .date_row {
        /* We only want padding for the date rows between recipient blocks */
        padding-bottom: 0;

        & span {
            font-size: calc(12em / 14);
            font-style: normal;
            font-weight: 600;
            line-height: 17px; /* identical to box height, or 131% */
            text-align: right;
            letter-spacing: 0.04em;
            color: var(--color-date);
        }
    }
}

div.focused_table {
    display: block;
}

.message_content {
    line-height: 1.214;
    min-height: 17px;
    display: block;
    position: relative;
    overflow: hidden;

    &:empty {
        display: none;
    }

    &.condensed {
        max-height: 8.5em;
        min-height: 0;
        overflow: hidden;
    }

    &.collapsed {
        max-height: 0;
        min-height: 0;
        overflow: hidden;
    }
}

.rtl {
    direction: rtl;
}

.message_edit_content {
    line-height: 18px;
    resize: vertical !important;
    max-height: 24em;
}

.message_edit_countdown_timer {
    text-align: right;
    display: inline;
    color: hsl(0, 0%, 63%);
}

.message_edit_tooltip {
    display: inline;
    color: hsl(0, 0%, 63%);
}

.message-edit-timer {
    float: right;
    display: none;
    margin-top: 5px;
}

.message-edit-feature-group {
    display: inline-flex;
    margin: 0 auto -5px 10px;
    align-items: baseline;
}

.message_edit_save .loader {
    display: none;
    vertical-align: top;
    position: relative;
    height: 28px;
    margin-top: -10px;
    top: 6px;
    width: 30px;
}

.edit-controls {
    .btn-wrapper {
        cursor: not-allowed;
    }

    .disable-btn {
        pointer-events: none;
    }
}

.topic_edit {
    display: none;
    line-height: 22px;

    .alert {
        display: inline-block;
        margin: 0;
        padding: 0 10px;
        line-height: 17px;
    }
}

#inline_topic_edit {
    margin-bottom: 5px;

    &.header-v {
        height: 18px;
        display: inline-block;
        padding: 0 3px;
        vertical-align: baseline;
        line-height: 0px;
        box-shadow: none;
    }
}

#message_edit_topic {
    margin: 0 5px 10px 0;
}

.message_edit_header {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
}

#inline_topic_edit:focus,
#message_edit_topic:focus {
    outline: none;
}

#move_topic_modal select {
    width: auto;
    margin-bottom: 10px;
    max-width: 100%;
}

.topic_move_breadcrumb_messages,
.message_edit_breadcrumb_messages {
    margin: 0 5px 5px 0;
    align-self: center;
    width: 100%;
    white-space: nowrap;

    & label.checkbox {
        /* Place the checkboxes on their own lines. */
        display: block;

        & input {
            margin: 0;
            vertical-align: baseline;
        }

        & + label.checkbox {
            margin-top: 10px;
        }
    }

    & label {
        display: inline-block;
        margin-right: 10px;
    }
}

.message_edit_breadcrumb_messages {
    margin-bottom: 10px;
}

.message_length_controller {
    display: none;
    text-align: center;
    color: hsl(200, 100%, 40%);

    /* to make message-uncollapse easier */
    margin-top: 10px;

    &:hover {
        text-decoration: underline;
    }
}

.bookend {
    margin-top: 10px;
    background-color: transparent;
}

.inline_profile_picture {
    display: inline-block;
    width: 35px;
    height: 35px;
    margin-right: 11px;
    vertical-align: top;
    border-radius: 4px;
    overflow: hidden;

    &.guest-avatar::after {
        outline: 2px solid hsl(0, 0%, 100%);
    }
}

.home-error-bar {
    margin-top: 5px;
    display: none;

    .alert {
        margin-bottom: auto;
    }
}

.streamname {
    font-weight: bold;
}

.top-navbar-border {
    border-right: 1px solid hsl(0, 0%, 88%);
    border-left: 1px solid hsl(0, 0%, 88%);
}

.search_icon {
    /* These rules match the .dropdown-toggle CSS for the gear menu. */
    color: inherit;
    opacity: 0.5;
    text-decoration: none;

    &:hover {
        opacity: 1;
    }
}

#message_view_header {
    z-index: 2;
    float: left;
    height: var(--header-height);
    width: 100%;
    line-height: var(--header-height);
    font-size: 16px;
    display: flex;
    align-content: flex-start;
    flex-wrap: nowrap;
    margin: 0;
    border: none;
    white-space: nowrap;
    cursor: default;

    .hidden {
        display: none;
    }

    .zulip-icon.zulip-icon-globe {
        font-size: 14px;
        position: relative;
        top: 1px;
    }

    .sub_count,
    .stream,
    & > span {
        white-space: nowrap;
        list-style-type: none;
        display: inline-block;
        vertical-align: top;
        position: relative;
        font-weight: 600;
        font-size: 16px;
        line-height: 16px;
        margin: 0 -4px 0 0;
        padding: 12px 6px;
        overflow: hidden;
        text-overflow: ellipsis;

        @media (width < $sm_min) {
            padding: 7px 3.5px; /* based on having ~41.66% decrease */
        }

        & i {
            margin: 0 3px 0 5px;
        }

        .fa {
            &.fa-lock {
                position: relative;
                top: 0.5px;
            }

            .fa-envelope {
                font-size: 14px;
                margin: 0 5px;
            }

            .fa-hashtag {
                font-size: 1.2rem;
                /* font-weight: 800; */
                margin: 0 2px 0 5px;
            }
        }
    }

    .stream {
        text-overflow: clip;
        color: inherit;
        text-decoration: none;
        /* The first ~3px of padding here overlaps with the left padding from sub_count for some reason. */
        padding-right: calc(3px + 10px);
    }

    .divider {
        color: hsl(0, 0%, 88%);
        font-size: 20px;
        margin: 0 3px;
    }

    .sub_count,
    .narrow_description {
        background: none;
        font-size: 14px;
        color: hsl(0, 0%, 40%);
        font-weight: 400;
        line-height: 20px;
    }

    .sub_count {
        padding-left: 10px;
        margin-left: 1px;
        padding-right: 10px;
        margin-right: 1px;
        overflow: visible;

        .fa.fa-user-o {
            margin-left: 0;
        }

        &::before,
        &::after {
            content: "|";
            position: absolute;
            top: 25%;
            height: 50%;
            color: hsl(0, 0%, 88%);
            font-size: 20px;

            @media (width < $sm_min) {
                top: 10%;
            }
        }

        &::before {
            left: -3px;

            @media (width < $sm_min) {
                /* this ensures the before "|" doesn't overlap
                   with the stream name text on small narrows */
                left: 0;
            }
        }

        &::after {
            right: -3px;
        }
    }

    .narrow_description {
        /* the actual value of flex shrink does not matter, it is the
           ratio of this value to other flex items that determines the
           behavior while shrinking, here the other item has the .stream
           class and a flex of 1, so the value here *is* the ratio, and
           is chosen such that the narrow description shrinks to close
           before the stream name must begin to shrink */
        flex-shrink: 100;
        white-space: nowrap;
        margin: 0;
        padding: 12px 0;
        padding-left: 10px;

        @media (width < $sm_min) {
            padding: 7px 0;
            padding-left: 10px;
        }

        & > a {
            padding: 12px 0;
        }
    }

    .search_closed {
        overflow: visible;
        flex: 0; /* makes sure search icon is always visible */

        cursor: pointer;
        font-size: 20px;

        padding: 10px 15px 0 0;

        @media (width < $sm_min) {
            padding: 5px 15px 0 0;
        }
    }

    /* The very last element in the navbar is the search icon, the second
       last element is either the narrow description (for stream narrows) or
       the "title" (for other narrows). The flex-grow property ensures these
       elements take up the entirety of the white space. */
    .navbar-click-opens-search {
        flex-grow: 1;

        /* Provide the visual cue that clicking this will work as expected. */
        cursor: pointer;

        &:hover ~ .search_closed {
            opacity: 1;
        }
    }
}

#navbar-buttons {
    white-space: nowrap;
    margin-left: 15px;
    margin-top: 7px;
    display: inline-block;
    float: right;

    & ul.nav {
        margin: 0;

        .dropdown-toggle,
        li.active .dropdown-toggle {
            font-size: 20px;
            color: inherit;
            opacity: 0.5;
            text-shadow: none;
            padding-left: 0 !important;
            background-color: inherit;
            box-shadow: inherit;
            display: block;
            position: absolute;
            right: 6px;
            top: -3px;
        }

        .dropdown-toggle:hover,
        li.active .dropdown-toggle:hover {
            opacity: 1;
        }

        & li.dropdown.open .dropdown-toggle {
            background: none;
            opacity: 1;
            text-shadow: none;
        }

        & li.dropdown li.divider {
            margin-left: 15px;
            margin-right: 15px;
        }
    }
}

#streamlist-toggle {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    text-align: center;
    vertical-align: middle;
    /* border-right: 2px solid hsl(204, 20%, 74%); */
}

.hide-streamlist-toggle-visibility,
.hide-navbar-buttons-visibility {
    visibility: hidden;
}

#streamlist-toggle-button {
    text-decoration: none;
    color: hsl(0, 0%, 52%);
    display: block;
    position: relative;
    background-color: hsl(0, 0%, 89%);
    width: 40px;
    height: 19px;
    padding-top: 12px;
    padding-bottom: 9px;
}

#streamlist-toggle-unreadcount,
#userlist-toggle-unreadcount {
    position: absolute;
    display: none;
    height: 12px;
    min-width: 12px;
    line-height: 12px;
    background-color: hsl(0, 100%, 20%);
    top: 4px;
    right: 4px;
    border: 1px solid hsl(0, 0%, 93%);
    box-shadow: 0 0 1px hsla(0, 0%, 0%, 0.2);
    border-radius: 12px;
    padding: 1px;
    font-size: 9px;
    z-index: 15;
    font-weight: normal;
    color: hsl(0, 0%, 100%);
}

.nav .dropdown-menu {
    left: auto;
    right: 0;
    top: 30px;
    /* Match the width of the right sidebar so that we don't have
       the presence dots distracting you when looking at this. */
    min-width: 240px;
    box-shadow: 0 0 5px hsla(0, 0%, 0%, 0.2);

    &::after {
        position: absolute;
        width: 0;
        height: 0;
        top: -7px;
        right: 19px;
        display: inline-block;
        border-right: 7px solid transparent;
        border-bottom: 7px solid hsl(0, 0%, 67%);
        border-left: 7px solid transparent;
        content: "";
        z-index: 10;
    }
}

#gear-menu .zulip-icon-language {
    position: relative;
    top: 2.5px;
    left: -0.5px;
}

.nav .dropdown-menu a,
.typeahead.dropdown-menu a {
    color: inherit;
}

.typeahead.dropdown-menu {
    .active {
        color: hsl(0, 0%, 100%);

        .unsubscribed_icon {
            display: block;
            float: right;
            margin-top: 5px;
            margin-right: -12px;
            font-size: 0.8em;
            color: hsl(96, 7%, 73%);
        }
    }

    .unsubscribed_icon {
        display: none;
    }
}

.typeahead-image {
    display: inline-block;
    height: 21px;
    width: 21px;
    position: relative;
    margin-top: -4px;
    vertical-align: middle;
    top: 2px;
    right: 8px;
    border-radius: 4px;

    /* For FontAwesome icons used in place of images for some users. */
    font-size: 19px;
    text-align: center;

    &.no-presence-circle {
        margin-left: 9px;
        top: 3px;
    }
}

nav {
    .column-left {
        text-align: center;

        .nav-logo {
            display: inline-block;
            vertical-align: top;
            margin-top: 8px;
            height: 25px;
            max-width: 200px;
        }
    }

    & a {
        &.no-style:hover {
            text-decoration: none;
            cursor: pointer;
        }

        .no-style {
            text-decoration: none;
        }
    }
}

#bottom_whitespace {
    display: block;
    height: 300px;
}

.operator_value {
    font-family: "Source Code Pro", monospace;
    color: hsl(353, 70%, 65%);
}

.operator {
    font-family: "Source Code Pro", monospace;
}

#loading_older_messages_indicator,
#loading_newer_messages_indicator {
    margin: 10px;
}

#loading_older_messages_indicator_box_container,
#loading_newer_messages_indicator_box_container {
    position: absolute;
    left: 50%;
}

#loading_older_messages_indicator_box,
#loading_newer_messages_indicator_box {
    position: relative;
    left: -50%;
    top: -43px;
    z-index: 1;
    border-radius: 6px;
}

#page_loading_indicator {
    margin: 10px auto;
}

#page_loading_indicator_box_container {
    position: absolute;
    left: 50%;
}

#page_loading_indicator_box {
    position: relative;
    left: -50%;
    top: -43px;
    z-index: 1;
    border-radius: 6px;
}

#create_stream_subscribers {
    margin-top: 10px;

    .checkbox {
        display: block;

        & input[type="checkbox"] {
            margin: 5px 0;
            float: none;
        }
    }
}

.sub_button_row {
    text-align: center;
}

.small_square_button {
    padding: 0;
    border: none;
    font-size: 12px;
    width: 18px;
    height: 18px;
    border-radius: 4px;
    margin-bottom: 3px;

    &:focus {
        outline: none;
    }

    &.small_square_x {
        background-color: hsl(0, 0%, 100%);
        color: hsl(0, 0%, 47%);

        &:hover {
            color: hsl(0, 0%, 18%);
        }
    }
}

div.topic_edit_spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    margin-top: -1px;
    padding: 2px;
    vertical-align: middle;
}

div.topic_edit_spinner .loading_indicator_spinner {
    width: 14px;
    height: 14px;
}

.message_edit_spinner {
    margin-right: 8px;
    padding-top: 5px;
}

.message_edit_spinner .loading_indicator_spinner {
    width: 20px;
    height: 20px;
}

textarea.invitee_emails {
    min-height: 40px;
    max-height: 300px;
    width: 96%;
    max-width: 96%;
    resize: vertical !important;

    color: hsl(0, 0%, 33%);
    background-color: hsl(0, 0%, 100%);
    border-radius: 4px;
    vertical-align: middle;
    border: 1px solid hsl(0, 0%, 80%);
    padding: 4px 6px;

    box-shadow: inset 0 1px 1px hsla(0, 0%, 0%, 0.075);
    transition: border linear 0.2s, box-shadow linear 0.2s;

    &:focus {
        border-color: hsla(206.5, 80%, 62%, 0.8);
        outline: 0;

        box-shadow: inset 0 1px 1px hsla(0, 0%, 0%, 0.075),
            0 0 8px hsla(206.5, 80%, 62%, 0.6);
    }

    &:disabled {
        cursor: not-allowed;
        background-color: hsl(0, 0%, 93%);
    }
}

#invite-user-modal {
    #custom-expiration-time-input,
    #invite-user-form {
        margin: 0;
    }
}

select.invite-expires-in,
select.custom-expiration-time,
select.invite-as {
    width: 220px;
    height: 30px;
    padding: 4px 6px;
    color: hsl(0, 0%, 33%);
    border-radius: 4px;
    border: 1px solid hsl(0, 0%, 80%);
    cursor: pointer;
    background-color: hsl(0, 0%, 100%);
    vertical-align: middle;
}

#multiuse_invite_link {
    width: 370px;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-block;
    overflow: hidden;
    vertical-align: bottom;
}

#invite-stream-checkboxes {
    & i.zulip-icon-globe {
        font-size: 80%;
    }
}

#invite-method-choice {
    margin-top: 2px;
}

#multiuse_radio_section {
    margin-top: 4px;
    margin-bottom: -2px;
    display: none;
}

#generate_multiuse_invite_button {
    position: relative;
    top: 1px;
}

#custom-invite-expiration-time {
    #custom-expiration-time-input {
        width: 5ch;
        margin-right: 15px;
    }

    #custom-expiration-time-unit {
        width: auto;
    }
}

.empty_feed_notice {
    padding: 3em 1em;
    text-align: center;
}

.message-fade,
.user_sidebar_entry.user-fade {
    opacity: 0.4;
}

.emoji {
    height: 25px;
    width: 25px;
    position: relative;
    margin-top: -7px;
    vertical-align: middle;
    top: 3px;
}

.status_emoji {
    height: 16px;
    width: 16px;
    /* We are setting minimum width here because when the user's name is very long,
    emoji's width decreases and causes it to break. */
    min-width: 16px;
    /* In most contexts, status emoji appear immediately after a name
      field with no margin. Position the status emoji with 3px of left
      margin to space it from the name, and set no right margin so
      that any components to the right appear equally distant as they
      would be from a name. */
    margin-left: 3px;
    margin-right: 0;
}

/* FIXME: Combine this rule with the one in portico.css somehow? */
#pw_strength {
    width: 100%;
    height: 10px;
    margin-bottom: 0;
}

#pw_change_controls {
    display: none;
}

.sub-unsub-message,
.date_row {
    padding-bottom: 10px;
}

.date_row {
    padding-left: 2px;
    text-align: right;
}

.sub-unsub-message span,
.date_row span {
    display: block;
    padding: 4px;
    overflow: hidden;
    text-transform: uppercase;
}

.sub-unsub-message .stream-status {
    opacity: 0.6;
}

.sub-unsub-message {
    text-align: center;
}

.sub-unsub-message span {
    font-size: 1em;
    text-transform: none;
}

.sub-unsub-message span::before,
.sub-unsub-message span::after,
.date_row span::before,
.date_row span::after {
    display: inline-block;
    position: relative;
    content: " ";
    vertical-align: middle;
    height: 0;
    opacity: 0.35;
    border-bottom: 1px solid hsl(0, 0%, 0%);
}

.sub-unsub-message span::before,
.sub-unsub-message span::after {
    width: 50%;
}

.date_row span::before {
    width: 100%;
}

.date_row span::after {
    width: 6px;
    left: 0.25em;
}

.sub-unsub-message span::before,
.date_row span::before {
    right: 0.25em;
    margin-left: -50%;
}

.sub-unsub-message span::after {
    left: 0.25em;
    margin-right: -50%;
}

.message_edit {
    display: none;
}

/* Reduce some of the heavy padding from Bootstrap. */
.message_edit_form {
    margin-bottom: 10px;
    cursor: default;

    .edit-controls {
        margin-left: 0;
        margin-top: 0;
    }

    /* Override the default border-radius to properly align
       the button corners with `stream_header_colorblock`. */
    .dropdown-toggle {
        border-radius: 1px 4px 4px 1px !important;
    }

    .dropdown-list-widget,
    .stream_header_colorblock {
        margin-bottom: 10px;
    }

    & textarea {
        width: 100%;
        min-width: 206px;
        box-sizing: border-box;
        /* Setting resize as none hides the bottom right diagonal box
           (which even has a background color of its own!). */
        resize: none !important;
        color: hsl(0, 0%, 33%);
        background-color: hsl(0, 0%, 100%);
        border-radius: 4px;
        vertical-align: middle;
        border: 1px solid hsl(0, 0%, 80%);
        padding: 4px 6px;
        margin-bottom: 10px;

        box-shadow: inset 0 1px 1px hsla(0, 0%, 0%, 0.075);
        transition: border linear 0.2s, box-shadow linear 0.2s;

        &:focus {
            border-color: hsla(206.5, 80%, 62%, 0.8);
            outline: 0;

            box-shadow: inset 0 1px 1px hsla(0, 0%, 0%, 0.075),
                0 0 8px hsla(206.5, 80%, 62%, 0.6);
        }

        &:read-only,
        &:disabled {
            cursor: not-allowed;
            background-color: hsl(0, 0%, 93%);
        }
    }
}

#topic_edit_form {
    display: inline-block;
    margin: 0;
    height: 22px;
    padding-left: 20px;
    padding-right: 3px;
    line-height: 22px;
    margin-left: -15px;
}

#message_feed_container {
    padding-top: var(--sidebar-top);
}

.screen {
    position: absolute;
    left: 0;
    top: 0;
    background-color: hsl(0, 0%, 0%);
    z-index: 20000;
}

.deactivated_user .deactivated-user-icon {
    color: inherit;
    margin-left: 2px;
    font-size: 0.9em;
}

.no-drag {
    -webkit-user-drag: none;
    user-select: none;
}

.user_popover_email {
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    transition: all 0.4s ease;

    & i {
        cursor: pointer;

        &.hide_copy_icon {
            display: none;
        }
    }
}

.email_copied,
.user_popover_email i:hover {
    color: hsl(170, 48%, 54%);
}

.email_copied i {
    display: none !important;
}

.flatpickr-calendar {
    /* Hide the up and down arrows in the Flatpickr datepicker year */
    .flatpickr-months .numInputWrapper span {
        display: none;
    }

    .flatpickr-time-separator {
        position: relative;
        left: 5px;
    }

    .flatpickr-time input {
        margin: 0 5px;
        min-height: 30px;
    }

    .flatpickr-confirm {
        color: hsl(0, 0%, 100%);
        background-color: hsl(213, 90%, 65%);
        font-size: 18px;
        font-weight: 600;
    }

    @media (width < $md_min) {
        /* Center align flatpickr on mobile
         * devices so that it doesn't go out of
         * the viewport. */
        left: 0 !important;
        right: 0 !important;
        margin: auto;

        &::after,
        &::before {
            border-top-width: 0 !important;
        }
    }
}

#about-zulip {
    .exit {
        font-size: 1.5rem;
        font-weight: 600;
        background-color: transparent;
        border: none;
        position: absolute;
        right: 8px;
        z-index: 1;
        color: hsl(0, 0%, 67%);
    }

    .overlay-content {
        width: 440px;
        border-radius: 4px;
    }

    .about-zulip-logo {
        text-align: center;
        margin: 30px;
    }

    .about-zulip-logo img {
        height: 40px;
    }

    & i.fa-copy {
        cursor: pointer;
    }
}

@media (width < $xl_min) {
    .app-main,
    .header-main {
        min-width: 750px;
    }

    .column-right {
        display: none;

        &.expanded {
            display: block;
            position: absolute;
            float: none;
            right: 15px;
            top: 0;

            .right-sidebar {
                background-color: hsla(0, 0%, 100%, 1);
                box-shadow: 0 -2px 3px 0 hsla(0, 0%, 0%, 0.1);
                border-left: 1px solid hsl(0, 0%, 87%);

                /* We use both margin and padding to
                   hide little artifacts from showing up in
                   the gutter below the navbar. */
                margin-top: var(--header-height);
                padding: var(--header-padding-bottom) 15px 0 15px;
                height: 100%;
                right: 0;
            }
        }
    }

    .header-main .column-right {
        display: inline-block;
        width: 30px;
    }

    #top_navbar #navbar-buttons {
        margin-right: 41px;
    }

    .nav .dropdown-menu {
        min-width: 180px;
        box-shadow: 0 0 5px hsla(0, 0%, 0%, 0.2);

        &::after {
            right: 21px;
        }
    }

    .column-middle {
        margin-right: 7px;
    }

    .top-navbar-container {
        width: calc(100% - 84px);
    }

    .search_closed .fa-search {
        right: 115px;
    }
}

@media (width < $md_min) {
    body {
        padding: 0;
    }

    .column-left {
        display: none;

        &.expanded {
            display: block;
            position: absolute;
            float: none;
            left: 0;
            top: 0;

            .left-sidebar {
                background-color: hsla(0, 0%, 100%, 1);
                box-shadow: 0 2px 3px 0 hsla(0, 0%, 0%, 0.1);
                border-right: 1px solid hsl(0, 0%, 87%);

                /* We use both margin and padding to
                   hide little artifacts from showing up in
                   the gutter below the navbar. */
                margin-top: var(--header-height);
                padding-top: var(--header-padding-bottom);

                height: 100%;
                padding-left: 10px;
                width: var(--left-sidebar-width);
            }
        }
    }

    body,
    html,
    .app-main,
    .header-main {
        min-width: 350px;
    }

    .column-middle,
    .app-main .column-middle {
        margin-left: 7px;
        margin-right: 7px;
    }

    .header-main .column-middle {
        margin-left: 0;
    }

    .column-middle-inner {
        margin-left: 0;
        margin-right: 15px;
    }

    .app-main .column-middle .column-middle-inner {
        margin-right: 0;
    }

    #streamlist-toggle {
        display: block;
    }

    .top-navbar-border {
        margin-left: 40px;
        width: calc(100% - 108px);
    }

    .search_closed .fa-search {
        right: 115px;
    }
}

@media (width < $sm_min) {
    .column-right.expanded .right-sidebar,
    .column-left.expanded .left-sidebar {
        margin-top: 31px;
    }

    .column-left.expanded {
        .left-sidebar {
            padding: 0;

            #streams_header {
                padding-right: 10px;
            }
        }

        .narrows_panel {
            margin-top: 10px;
        }
    }

    .search_closed .fa-search {
        top: 5px;
    }

    #streamlist-toggle,
    #navbar-buttons,
    .navbar-search,
    #message_view_header,
    #searchbox,
    #searchbox_legacy,
    .header {
        line-height: var(--header-height);
        height: var(--header-height);
    }

    .spectator_narrow_login_button {
        height: var(--header-height) !important;
    }

    #streamlist-toggle-button {
        height: var(--header-height);
        padding-top: 0;
        padding-bottom: 0;
    }

    #navbar-buttons ul.nav .dropdown-toggle,
    #navbar-buttons ul.nav li.active .dropdown-toggle {
        top: -8px;
    }

    .messagebox-content {
        padding-right: 15px;
    }

    .include-sender .message_controls {
        background: none !important;
        padding: 0 !important;
        border: none !important;
    }

    #floating_recipient_bar {
        top: var(--sidebar-top);
    }

    .message_content {
        padding-right: 50px;
    }
}

@media (width < $mm_min) {
    html {
        overflow-x: hidden;
    }

    body,
    html,
    .app-main,
    .header-main {
        min-width: 320px;
    }
}

@media (width < $md_min) {
    #feedback_container {
        width: calc(90% - 30px);
        left: 5%;
        top: 5%;
    }
}

#scroll-to-bottom-button-container {
    display: block;
    position: absolute;
    bottom: 41px;
    right: 0;
    visibility: hidden;
    opacity: 0;
    transition: visibility 500ms, opacity 500ms ease-in-out;

    &.show {
        visibility: visible;
        opacity: 1;
    }

    #scroll-to-bottom-button-clickable-area {
        width: 60px;
        height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;

        &:hover #scroll-to-bottom-button {
            background: hsl(240, 96%, 68%);
        }

        #scroll-to-bottom-button {
            text-align: center;
            width: 40px;
            height: 40px;
            background: hsl(240, 96%, 68%, 0.5);
            border-radius: 50%;

            & i {
                color: hsl(0, 0%, 100%);
                margin: 0 auto;
                font-size: 21px;
                position: relative;
                top: 8px;
            }
        }
    }
}

.tooltip_right_arrow {
    position: relative;
    top: -1px;
    font-weight: 600;
}

.spectator_login_for_image_button {
    max-width: 250px;
    height: 50px;

    :hover {
        text-decoration: none;
    }

    .login_button {
        padding: 5px;
        margin-top: 5px;

        .fa {
            top: 1px;
        }
    }
}

.recipient_row {
    /* See https://stackoverflow.com/questions/2717480/css-selector-for-first-element-with-class/8539107#8539107
       for details on how this works */
    .message_row.unread {
        .date_row {
            position: relative;
            z-index: 3;
            background-color: hsl(0, 0%, 100%);
        }
    }

    .private-message.unread {
        .date_row {
            background-color: hsl(192, 20%, 95%);
        }
    }

    /* Select all but the first .message_row.unread,
       and remove the properties set from the previous rule. */
    .message_row.unread ~ .message_row.unread {
        .date_row {
            position: unset;
            z-index: 0;
            background-color: transparent;
        }
    }

    .private-message.unread ~ .private-message.unread {
        .date_row {
            background-color: hsl(192, 20%, 95%);
        }
    }
}

.simplebar-content-wrapper {
    /* `simplebar-content-wrapper` has `tabindex=0` set, which makes it focusable
        but we don't want it to have an outline when focused anywhere in the app. */
    outline: none;
}