:root {
    color-scheme: light;

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

    /*
    At 600px, the header starts taking up more than 5%
    of the screen. We make it shorter to leave more space
    to see the rest of the app. */
    @media (height < $short_navbar_cutoff_height) {
        --header-height: 30px;
    }

    /*
    Height of the search box, which appears in the header.
    On very short screens, the search box's height becomes
    the height of its parent (i.e. the header height).
    */
    --search-box-height: 28px;
    --search-box-width: 150px;

    @media (height < $short_navbar_cutoff_height) {
        --search-box-height: var(--header-height);
    }

    @media (width < $md_min) {
        --search-box-width: 40px;
    }

    /*
    Since #navbar_alerts_wrapper can take variable height depending upon
    window width / language, we sync its height in navbar_alerts.js
    */
    --navbar-alerts-wrapper-height: 0px;
    --navbar-fixed-height: calc(
        var(--header-height) + var(--navbar-alerts-wrapper-height)
    );
    /* Keep content from colliding with the search box. */
    --navbar-content-righthand-offset: 5px;

    /*
    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.
    */
    --left-sidebar-collapse-widget-gutter: 10px;
    --left-sidebar-width: 270px;
    --right-sidebar-width: 250px;
    --left-sidebar-header-icon-width: 15px;

    /* Tippy popover related values */
    --navbar-popover-menu-min-width: 230px;
    --message-actions-popover-min-width: 230px;
    --topic-actions-popover-min-width: 200px;

    /* Information density and typography values */
    /* The legacy values here are updated via JavaScript */
    --base-font-size-px: 14px;
    --base-line-height-unitless: 1.214;
    --markdown-interelement-space-px: 5px;
    --markdown-interelement-doubled-space-px: calc(
        var(--markdown-interelement-space-px) * 2
    );

    .more-dense-mode {
        /* The legacy values here are not altered by JavaScript */
        --base-font-size-px: 14px;
        --base-line-height-unitless: 1.214;
        --markdown-interelement-space-px: 5px;
        --markdown-interelement-doubled-space-px: 10px;
        --message-box-markdown-aligned-vertical-space: 5px;
    }

    /*
    Message box elements and values.
    */
    --message-box-avatar-width: 35px;
    --message-box-avatar-height: var(--message-box-avatar-width);
    --message-box-avatar-column-width: 46px;
    /* 6px appears to provide 5px of space between the avatar
       and the selected-message outline, which is offset by -1px. */
    --message-box-vertical-margin: 6px;
    --message-box-markdown-aligned-vertical-space: var(
        --markdown-interelement-space-px
    );
    --message-box-icon-width: 26px;
    --message-box-icon-height: 25px;
    /* The line-height on the sender line should coordinate with the
       height of the hover icons. The sender line never wraps, so this
       just keeps the two in line with the grid definition. */
    --message-box-sender-line-height: var(--message-box-icon-height);
    /* This width is updated with an exact pixel
       width upon UI initialization. */
    --message-box-timestamp-column-width: 0;

    /*
    Reaction container UI scaling.
    */
    --scale-message-reaction-active: 0.96;

    /*
    Left position of unread marker. Only needs to be tracked if it is negative so that
    it doesn't leak through message header.
    */
    --unread-marker-left: -1px;

    /*
    Compose-recipient box minimum height. Used in a flexbox context to
    allow elements like DM pills to stack without breaking out of their
    flex item.
    */
    --compose-recipient-box-min-height: 30.5px;

    /*
    Width to be reserved for document scrollbar when scrolling is disabled.
    Using `scrollbar-gutter` would be more appropriate but doesn't has wide
    support and doesn't work for `fixed` elements.
    */
    --disabled-scrollbar-width: 0px;

    /*
    Right offset of simplebar scrollbar for `.column-right` when browser has
    overlay scrollbars which don't occupy any space. Currently only
    known to present on Mac (all browsers) and Firefox (all OS?). This seems
    more than enough to differentiate right sidebar scrollbar and browser
    scrollbar even if the browser scrollbar is wider.
    */
    --browser-overlay-scrollbar-width: 10px;

    /* This is a rough estimate for height occupied by Recent Conversations filters.
       We expect `resize.ts` to update this once UI is initialized. */
    --recent-topics-filters-height: 50px;

    /* Overlay heights for streams modal */
    --overlay-container-height: 95vh;
    --overlay-container-max-height: 1000px;
    /* .subscriptions-header */
    --subscriptions-overlay-header-height: 45px;
    /* .display-type */
    --subscriptions-overlay-display-type-height: 44px;
    /* .settings-sticky-footer */
    --subscriptions-overlay-sticky-footer-height: 60px;

    /*
    Maximum height of the compose box when it is not in expanded state. This
    is equal to the height of `#bottom_whitespace`. We expect resize.ts to
    replace it with its pixel calculation since even if `vh` has great support,
    it can change depending on browser / OS on mobile devices.
    */
    --max-unexpanded-compose-height: 40vh;

    /*
    Line height of the message buttons in compose box. Here it's necessary
    to control this value uniformly and precisely to avoid issues with
    layout shifts originating with non-Latin characters in this area.
    */
    --line-height-compose-buttons: 20px;

    /*
    Maximum height of the subscribers list in stream settings so that
    it doesn't cause the container to have a second scrollbar.
    This value will be overridden when stream settings is opened.
    */
    --stream-subscriber-list-max-height: 100%;

    /*
      Reusable dimensions and offsets.
    */
    --margin-bottom-field-description: 3px;
    /* Gap between tabs in the tab picker */
    --grid-gap-tab-picker: 2px;

    /*
    The tippy arrow which matches the color of the popover's border,
    is formed by stacking two arrows on top of each other, via the
    use of `::before` and `::after` pseudo-elements. This value overrides
    the offset of the `::before` pseudo element to create a thicker border,
    visually consistent with that of it's parent popover.
    */
    --popover-tippy-arrow-before-offset: -6.5px;

    /* Colors used across the app */
    --color-date: hsl(0deg 0% 15% / 75%);
    --color-background-private-message-header: hsl(46deg 35% 93%);
    --color-background-private-message-content: hsl(45deg 20% 96%);
    --color-background-stream-message-content: hsl(0deg 0% 100%);
    --color-selected-message-outline: hsl(217deg 64% 59% / 60%);
    --color-message-list-border: hsl(0deg 0% 0% / 16%);
    --color-message-header-contents-border: hsl(0deg 0% 0% / 10%);
    --color-private-message-header-border: hsl(0deg 0% 0% / 10%);
    --color-message-header-contents-border-bottom: hsl(0deg 0% 0% / 5%);
    --color-private-message-header-border-bottom: hsl(0deg 0% 0% / 7%);
    --color-message-header-icon-non-interactive: hsl(0deg 0% 0% / 30%);
    --color-message-header-icon-interactive: hsl(0deg 0% 0%);
    --color-background: hsl(0deg 0% 94%);
    --color-background-widget-input: hsl(0deg 0% 100%);
    --color-background-navbar: hsl(0deg 0% 97%);
    --color-background-active-narrow-filter: hsl(202deg 56% 91%);
    --color-background-hover-narrow-filter: hsl(120deg 12.3% 71.4% / 38%);
    --color-navbar-bottom-border: hsl(0deg 0% 80%);
    --color-unread-marker: hsl(217deg 64% 59%);
    --color-masked-unread-marker: hsl(0deg 0% 80%);
    --color-failed-message-send-icon: hsl(3.88deg 98.84% 66.27%);
    --color-background-modal: hsl(0deg 0% 98%);
    --color-unmuted-or-followed-topic-list-item: hsl(0deg 0% 20%);
    --color-outline-focus: hsl(215deg 47% 50%);
    --color-background-search: hsl(0deg 0% 100%);
    --color-background-search-option-hover: hsl(0deg 0% 94%);
    --color-search-box-hover-shadow: hsl(0deg 0% 0% / 10%);
    --color-search-shadow-wide: hsl(0deg 0% 0% / 25%);
    --color-search-shadow-tight: hsl(0deg 0% 0% / 10%);
    --color-search-dropdown-top-border: hsla(0deg 0% 0% / 10%);
    --color-background-image-loader: hsl(0deg 0% 0% / 10%);
    --color-icon-purple: hsl(240deg 35% 60%);
    --color-background-popover-menu: hsl(0deg 0% 100%);
    --color-border-popover-menu-separator: hsl(0deg 0% 0% / 10%);
    --color-hotkey-hint: hsl(227deg 78% 59%);
    --color-popover-hotkey-hint: hsl(0deg 0% 40%);
    --color-border-popover-hotkey-hint: hsl(0deg 0% 40% / 50%);
    --color-background-hover-popover-menu: hsl(220deg 12% 5% / 5%);
    --color-background-active-popover-menu: hsl(220deg 12% 5% / 7%);
    --color-border-popover-menu: hsl(0deg 0% 0% / 40%);
    --color-border-personal-menu-avatar: hsl(0deg 0% 0% / 10%);
    --color-background-unread-counter: hsl(105deg 2% 50%);
    --color-border-add-subscription-button-focus: hsl(0deg 0% 20%);
    /* There's no alpha channel here, but this keeps
       the variable names in line. */
    --color-background-unread-counter-no-alpha: var(
        --color-background-unread-counter
    );
    --color-background-unread-counter-dot: var(
        --color-background-unread-counter
    );
    --color-border-unread-counter: var(--color-background-unread-counter);
    --color-border-unread-counter-popover-menu: inherit;
    --color-background-tab-picker-container: hsl(0deg 0% 0% / 7%);
    --color-background-tab-picker-selected-tab: hsl(0deg 0% 100%);
    --color-outline-tab-picker-tab-option: hsl(0deg 0% 0% / 30%);
    --color-background-tab-picker-tab-option-hover: hsl(0deg 0% 100% / 60%);
    --color-background-tab-picker-tab-option-active: hsl(0deg 0% 100% / 35%);
    --color-background-popover: hsl(0deg 0% 100%);
    --color-background-alert-word: hsl(18deg 100% 84%);
    --color-buddy-list-highlighted-user: hsl(120deg 12.3% 71.4% / 38%);
    --color-border-sidebar: hsl(0deg 0% 87%);

    /* Compose box colors */
    --color-compose-send-button-icon-color: hsl(0deg 0% 100%);
    --color-compose-send-button-background: hsl(240deg 96% 68%);
    --color-compose-send-button-background-interactive: hsl(240deg 41% 50%);
    --color-compose-send-button-focus-border: hsl(232deg 20% 10%);
    --color-compose-send-button-focus-shadow: hsl(230deg 100% 20%);
    --color-compose-send-control-button: hsl(240deg 30% 50% / 80%);
    --color-compose-send-control-button-background: transparent;
    --color-compose-send-control-button-interactive: hsl(240deg 30% 50%);
    --color-compose-send-control-button-background-interactive: hsl(
        240deg 100% 30% / 5%
    );
    --color-compose-send-control-button-focus-shadow: var(
        --color-compose-send-button-focus-shadow
    );
    --color-compose-collapsed-reply-button-area-background: hsl(0deg 0% 100%);
    --color-compose-collapsed-reply-button-area-background-interactive: var(
        --color-compose-collapsed-reply-button-area-background
    );
    --color-compose-collapsed-reply-button-area-border: hsl(0deg 0% 80%);
    --color-compose-collapsed-reply-button-area-border-interactive: hsl(
        0deg 0% 60%
    );
    --color-compose-embedded-button-text-color: hsl(231deg 20% 55%);
    --color-compose-embedded-button-text-color-hover: hsl(231deg 20% 30%);
    --color-compose-embedded-button-background: transparent;
    --color-compose-embedded-button-background-hover: hsl(
        231deg 100% 90% / 50%
    );
    --color-compose-chevron-arrow: hsl(0deg 0% 58%);
    --color-limit-indicator: hsl(38deg 100% 36%);
    --color-limit-indicator-over-limit: hsl(3deg 80% 40%);

    /* Text colors */
    --color-text-default: hsl(0deg 0% 20%);
    --color-text-message-default: hsl(0deg 0% 15%);
    --color-text-message-view-header: hsl(0deg 0% 20% / 100%);
    --color-text-message-header: hsl(0deg 0% 15%);
    /* Light and dark mode both use the same hover color on
       sender names. */
    --color-text-sender-name-hover: hsl(200deg 100% 40%);
    --color-text-dropdown-input: hsl(0deg 0% 13.33%);
    --color-text-self-direct-mention: hsl(240deg 52% 45% / 100%);
    --color-text-self-group-mention: hsl(183deg 52% 26% / 100%);
    --color-text-show-more-less-button: hsl(240deg 52% 53%);
    --color-text-search: hsl(0deg 0% 35%);
    --color-text-search-hover: hsl(0deg 0% 0%);
    --color-text-search-placeholder: hsl(0deg 0% 50%);
    --color-text-popover-menu: hsl(0deg 0% 15%);
    --color-text-full-name: hsl(0deg 0% 15%);
    --color-text-item: hsl(0deg 0% 40%);
    --color-text-personal-menu-no-status: hsl(0deg 0% 50%);
    --color-text-personal-menu-some-status: hsl(0deg 0% 40%);
    --color-text-sidebar-heading: hsl(0deg 0% 43%);
    --color-text-sidebar-popover-menu: hsl(0deg 0% 20%);
    --color-text-url: hsl(200deg 100% 40%);
    --color-text-url-hover: hsl(200deg 100% 25%);
    --color-text-settings-field-hint: hsl(0deg 0% 57%);

    /* Markdown code colors */
    --color-markdown-code-text: hsl(0deg 0% 0%);
    --color-markdown-code-background: hsl(0deg 0% 0% / 6%);
    --color-markdown-code-background-mentions: hsl(0deg 0% 0% / 7%);
    --color-markdown-pre-text: var(--color-markdown-code-text);
    --color-markdown-pre-border: transparent;
    --color-markdown-pre-background: hsl(0deg 0% 0% / 4%);
    --color-markdown-pre-background-mentions: hsl(0deg 0% 0% / 4%);
    --color-markdown-pre-border-mentions: transparent;
    --color-markdown-link: hsl(200deg 100% 40%);
    --color-markdown-code-link: var(--color-markdown-link);
    --color-markdown-link-hover: hsl(200deg 100% 25%);
    --color-markdown-code-link-hover: var(--color-markdown-link-hover);

    /* Icon colors */
    --color-icon-bot: hsl(180deg 8% 65% / 100%);
    --color-message-action-visible: hsl(216deg 43% 20% / 50%);
    --color-message-action-interactive: hsl(216deg 43% 20% / 100%);
    --color-message-star-action: hsl(41deg 100% 47% / 100%);
    /* The gray on the filter icons is the same as
       what's set on ul.filters, but with 70% opacity. */
    --color-left-sidebar-navigation-icon: hsl(0deg 0% 20% / 70%);
    --color-vdots-hint: hsl(0deg 0% 0% / 30%);
    --color-vdots-visible: hsl(0deg 0% 0% / 53%);
    --color-vdots-hover: hsl(0deg 0% 0%);
    --color-left-sidebar-header-vdots-visible: var(
        --color-left-sidebar-navigation-icon
    );
    --color-tab-picker-icon: hsl(200deg 100% 40%);

    /* Reaction container colors */
    --color-message-reaction-border: hsl(0deg 0% 0% / 10%);
    --color-message-reaction-border-reacted: hsl(0deg 0% 0% / 45%);
    --color-message-reaction-background: hsl(0deg 0% 100%);
    --color-message-reaction-background-reacted: hsl(0deg 0% 100%);
    --color-message-reaction-background-hover: hsl(210deg 30% 96%);
    --color-message-reaction-shadow-inner: hsl(210deg 50% 50% / 8%);
    --color-message-reaction-text: hsl(210deg 20% 25% / 100%);
    --color-message-reaction-text-reacted: hsl(210deg 20% 20% / 100%);
    --color-message-reaction-button-text: hsl(210deg 20% 20% / 60%);
    --color-message-reaction-button-text-hover: var(
        --color-message-reaction-text
    );
    --color-message-reaction-button-background: inherit;
    --color-message-reaction-button-background-hover: var(
        --color-message-reaction-background
    );
    --color-message-reaction-button-border: transparent;
    --color-message-reaction-button-border-hover: var(
        --color-message-reaction-border
    );
    --font-weight-message-reaction: 600;

    /* Message feed loading indicator colors */
    --color-zulip-logo: hsl(0deg 0% 0% / 34%);
    --color-zulip-logo-loading: hsl(0deg 0% 27%);
    --color-recent-view-loading-spinner: hsl(0deg 0% 27%);
    --color-zulip-logo-z: hsl(0deg 0% 100%);

    /* Message collapsing/condensing button colors */
    --color-show-more-less-button-background: hsl(240deg 44% 56% / 8%);
    --color-show-more-less-button-background-hover: hsl(240deg 44% 56% / 15%);
    --color-show-more-less-button-background-active: hsl(240deg 44% 56% / 20%);

    /* Mention pill colors */
    --color-background-direct-mention: hsl(240deg 52% 95%);
    --color-background-group-mention: hsl(180deg 40% 94%);
    --color-background-text-direct-mention: hsl(240deg 70% 70% / 20%);
    --color-background-text-hover-direct-mention: hsl(240deg 70% 70% / 30%);
    --color-background-text-group-mention: hsl(183deg 60% 45% / 18%);
    --color-background-text-hover-group-mention: hsl(183deg 60% 45% / 30%);

    /* Inbox view constants - Values from Figma design */
    --height-inbox-search: 26px;
    --width-inbox-search: 346px;
    --width-inbox-filters-dropdown: 150px;
    --color-background-inbox-no-unreads-illustration: hsl(147deg 57% 25%);
    --color-background-inbox: var(--color-background);
    --color-icon-search-inbox: hsl(0deg 0% 0%);
    --color-inbox-search-text: hsl(0deg 0% 0%);
    --color-border-inbox-search: hsl(229.09deg 21.57% 10% / 30%);
    --color-border-inbox-search-hover: hsl(229.09deg 21.57% 10% / 60%);
    --color-background-inbox-search: hsl(0deg 0% 100%);
    --color-background-inbox-search-hover: hsl(0deg 0% 100%);
    --color-background-inbox-search-focus: hsl(0deg 0% 100%);
    --color-border-inbox-search-focus: hsl(229.09deg 21.57% 10% / 80%);
    --color-box-shadow-inbox-search-focus: hsl(228deg 9.8% 20% / 30%);
    --color-background-inbox-row: hsl(0deg 0% 100%);
    --color-background-inbox-row-hover: linear-gradient(
            0deg,
            hsl(0deg 0% 0% / 5%) 0%,
            hsl(0deg 0% 0% / 5%) 100%
        ),
        hsl(0deg 0% 100%);
    --color-background-btn-inbox-selected: hsl(0deg 0% 0% / 5%);
    --color-background-btn-inbox-focus: hsl(0deg 0% 80%);
    --color-icons-inbox: hsl(0deg 0% 0%);
    --color-background-icon-close-hover: hsl(0deg 0% 0% / 5%);

    /* Navbar dropdown menu constants - Values from Figma design */
    --box-shadow-popover-menu: 0 2.78px 4.11px 0 hsl(0deg 0% 0% / 6%),
        0 5.5113px 8.5783px 0 hsl(0deg 0% 0% / 7%),
        0 8.438px 13.9271px 0 hsl(0deg 0% 0% / 8%),
        0 12.177px 21.4737px 0 hsl(0deg 0% 0% / 9%),
        0 18.7257px 35.4802px 0 hsl(0deg 0% 0% / 9%),
        0 41px 80px 0 hsl(0deg 0% 0% / 13%);
    --box-shadow-gear-menu: 0 2.7798px 4.1129px 0 hsl(0deg 0% 0% / 10%),
        0 5.5113px 8.5783px 0 hsl(0deg 0% 0% / 9%),
        0 8.4377px 13.9271px 0 hsl(0deg 0% 0% / 11%),
        0 12.177px 21.4737px 0 hsl(0deg 0% 0% / 11%),
        0 18.7257px 35.4802px 0 hsl(0deg 0% 0% / 15%),
        0 41px 80px 0 hsl(0deg 0% 0% / 20%);
    --color-navbar-icon: hsl(240deg 20% 50%);
    --color-navbar-spectator-low-attention-brand-button-text: hsl(
        240deg 40% 50%
    );
    --color-navbar-spectator-low-attention-brand-button-background: transparent;
    --color-navbar-spectator-low-attention-brand-button-background-hover: hsl(
        240deg 100% 30% / 5%
    );
    --color-navbar-spectator-low-attention-brand-button-background-active: hsl(
        240deg 100% 30% / 8%
    );
    --color-navbar-spectator-medium-attention-brand-button-text: hsl(
        240deg 40% 40% / 100%
    );
    --color-navbar-spectator-medium-attention-brand-button-background: hsl(
        244deg 64% 47% / 10%
    );
    --color-navbar-spectator-medium-attention-brand-button-background-hover: hsl(
        244deg 64% 47% / 15%
    );
    --color-navbar-spectator-medium-attention-brand-button-background-active: hsl(
        244deg 64% 47% / 18%
    );
    --color-gear-menu-lighter-text: hsl(0deg 0% 40%);
    --color-gear-menu-blue-text: hsl(217deg 100% 50%);
    --color-header-button-hover: hsl(0deg 0% 0% / 5%);
    /* This is a technique for directing CSS to do
       the color mixing ordinarily handled by the
       alpha channel in hsl(); here, the alpha value
       is omitted from the hsl() syntax and instead
       used as the percentage for mixing over top of
       the navbar background. This is needed so that
       elements like the unread-count dot can make
       use of the color, but neither compound alpha
       values or apply alpha values over different
       colors, such as the background color on the
       unread dot.

       The second color value aligns with
       --color-background-navbar. We use the value
       directly so that this gets compiled down to
       an rgb() value by PostCSS Preset Env. */
    --color-header-button-hover-no-alpha: color-mix(
        in srgb,
        hsl(0deg 0% 0%) 5%,
        hsl(0deg 0% 97%)
    );
    --color-header-button-focus: hsl(0deg 0% 0% / 8%);
    /* The second color value aligns with
       --color-background-navbar */
    --color-header-button-focus-no-alpha: color-mix(
        in srgb,
        hsl(0deg 0% 0%) 8%,
        hsl(0deg 0% 97%)
    );
    --color-fill-hover-copy-icon: hsl(200deg 100% 40%);
    --color-fill-user-invite-copy-icon: hsl(0deg 0% 46.7%);
    --icon-chevron-down: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M3.52977 5.52973C3.78947 5.27004 4.21053 5.27004 4.47023 5.52973L8 9.05951L11.5298 5.52973C11.7895 5.27004 12.2105 5.27004 12.4702 5.52973C12.7299 5.78943 12.7299 6.21049 12.4702 6.47019L8.47023 10.4702C8.21053 10.7299 7.78947 10.7299 7.52977 10.4702L3.52977 6.47019C3.27008 6.21049 3.27008 5.78943 3.52977 5.52973Z' fill='%23333333'/%3E%3C/svg%3E%0A");

    /* Button colors on modals and message editing. */
    /* Don't define light theme colors for modal here
       since the modal is also used on billing pages and
       this file is not imported on billing pages. */

    /* Emoji-picker colors */
    --color-background-emoji-picker-popover: hsl(0deg 0% 93%);
    --color-background-emoji-picker-popover-tab-item-active: hsl(
        0deg 0% 100% / 20%
    );
    --color-background-emoji-picker-emoji-focus: hsl(0deg 0% 93%);
    --color-box-shadow-emoji-picker-emoji-focus: transparent;
    --color-background-emoji-picker-emoji-reacted: hsl(195deg 50% 95%);
    --color-border-emoji-picker-emoji-reacted: hsl(195deg 52% 79%);
    --color-background-emoji-picker-emoji-reacted-focus: hsl(195deg 55% 88%);
}

%dark-theme {
    /* There is no lefthand border to cover in dark mode, so
       don't apply negative margin that would otherwise pull
       the unread marker to the left. */
    --unread-marker-left: 0;

    /* Colors used across the app */
    --color-date: hsl(0deg 0% 100% / 75%);
    --color-background-private-message-header: hsl(46deg 15% 20%);
    --color-background-private-message-content: hsl(46deg 7% 16%);
    --color-background-stream-message-content: hsl(0deg 0% 15%);
    --color-message-header-icon-non-interactive: hsl(0deg 0% 100% / 30%);
    --color-message-header-icon-interactive: hsl(0deg 0% 100%);
    --color-message-header-contents-border: hsl(0deg 0% 0% / 60%);
    --color-private-message-header-border: hsl(0deg 0% 0% / 48%);
    --color-message-header-contents-border-bottom: hsl(0deg 0% 0% / 50%);
    --color-private-message-header-border-bottom: hsl(0deg 0% 0% / 37%);
    --color-selected-message-outline: hsl(217deg 64% 59% / 70%);
    --color-message-list-border: hsl(0deg 0% 0% / 40%);
    --color-background: hsl(0deg 0% 11%);
    --color-background-widget-input: hsl(225deg 6% 10%);
    --color-background-navbar: hsl(0deg 0% 13%);
    --color-background-active-narrow-filter: hsl(200deg 17% 18%);
    --color-background-hover-narrow-filter: hsl(136deg 25% 73% / 20%);
    --color-navbar-bottom-border: hsl(0deg 0% 0% / 60%);
    --color-unread-marker: hsl(217deg 64% 59%);
    --color-masked-unread-marker: hsl(0deg 0% 30%);
    --color-background-modal: hsl(212deg 28% 18%);
    --color-unmuted-or-followed-topic-list-item: hsl(236deg 33% 90%);
    --color-recipient-bar-controls-spinner: hsl(0deg 0% 100%);
    --color-background-search: hsl(0deg 0% 20%);
    --color-background-search-option-hover: hsl(0deg 0% 30%);
    --color-search-box-hover-shadow: hsl(0deg 0% 0% / 30%);
    --color-search-dropdown-top-border: hsla(0deg 0% 0% / 35%);
    --color-background-image-loader: hsl(0deg 0% 100% / 10%);
    --color-background-popover-menu: hsl(0deg 0% 17%);
    --color-border-popover-menu-separator: hsl(0deg 0% 0% / 40%);
    --color-hotkey-hint: hsl(225deg 100% 84%);
    --color-popover-hotkey-hint: hsl(0deg 0% 65%);
    --color-border-popover-hotkey-hint: hsl(0deg 0% 65% / 50%);
    --color-background-hover-popover-menu: hsl(220deg 12% 95% / 5%);
    --color-background-active-popover-menu: hsl(220deg 12% 95% / 7%);
    --color-border-popover-menu: hsl(0deg 0% 0%);
    --color-border-personal-menu-avatar: hsl(0deg 0% 100% / 20%);
    --color-background-unread-counter: hsl(105deg 2% 50% / 50%);
    /* When unreads are hovered on the condensed
       views, they should not have an alpha.

       The second color aligns with dark mode's
       --color-background. We use the value
       directly so that this gets compiled down to
       an rgb() value by PostCSS Preset Env. */
    --color-background-unread-counter-no-alpha: color-mix(
        in srgb,
        hsl(105deg 2% 50%) 50%,
        hsl(0deg 0% 11%)
    );
    --color-background-unread-counter-dot: hsl(105deg 2% 50% / 90%);
    --color-border-unread-counter: hsl(105deg 2% 50%);
    --color-border-unread-counter-popover-menu: var(
        --color-border-unread-counter
    );
    --color-background-tab-picker-container: hsl(0deg 0% 0% / 30%);
    --color-background-tab-picker-selected-tab: hsl(0deg 0% 100% / 7%);
    --color-outline-tab-picker-tab-option: hsl(0deg 0% 100% / 12%);
    --color-background-tab-picker-tab-option-hover: hsl(0deg 0% 100% / 5%);
    --color-background-tab-picker-tab-option-active: hsl(0deg 0% 100% / 3%);
    --color-background-alert-word: hsl(22deg 70% 35%);
    --color-buddy-list-highlighted-user: hsl(136deg 25% 73% / 20%);
    --color-border-sidebar: hsl(0deg 0% 0% / 20%);

    /* Compose box colors */
    --color-compose-send-button-focus-shadow: hsl(0deg 0% 100% / 80%);
    --color-compose-send-control-button: hsl(240deg 30% 70%);
    --color-compose-send-control-button-background: transparent;
    --color-compose-send-control-button-interactive: var(
        --color-compose-send-control-button
    );
    --color-compose-send-control-button-background-interactive: hsl(
        235deg 100% 70% / 11%
    );
    --color-compose-send-control-button-focus-shadow: var(
        --color-compose-send-button-focus-shadow
    );
    --color-compose-collapsed-reply-button-area-background: hsl(
        0deg 0% 0% / 20%
    );
    --color-compose-collapsed-reply-button-area-background-interactive: hsl(
        0deg 0% 0% / 15%
    );
    --color-compose-collapsed-reply-button-area-border: hsl(0deg 0% 0% / 60%);
    --color-compose-collapsed-reply-button-area-border-interactive: var(
        --color-compose-collapsed-reply-button-area-border
    );
    --color-compose-embedded-button-text-color: hsl(231deg 30% 65%);
    --color-compose-embedded-button-text-color-hover: hsl(231deg 30% 70%);
    --color-compose-embedded-button-background: transparent;
    --color-compose-embedded-button-background-hover: hsl(
        235deg 100% 70% / 11%
    );
    --color-background-popover: hsl(212deg 32% 14%);
    --color-limit-indicator: hsl(38deg 100% 70%);
    --color-limit-indicator-over-limit: hsl(3deg 80% 60%);

    /* Text colors */
    --color-text-default: hsl(0deg 0% 100% / 75%);
    /* Unlike the light theme, the dark theme renders message
       text in the default color. */
    --color-text-message-default: var(--color-text-default);
    --color-text-message-view-header: hsl(0deg 0% 100% / 80%);
    --color-text-message-header: hsl(0deg 0% 100% / 80%);
    --color-text-sender-name: hsl(0deg 0% 100% / 85%);
    --color-text-dropdown-input: hsl(0deg 0% 95%);
    --color-text-other-mention: hsl(0deg 0% 100% / 80%);
    --color-text-self-direct-mention: hsl(240deg 100% 88% / 100%);
    --color-text-self-group-mention: hsl(184deg 52% 63% / 100%);
    --color-text-show-more-less-button: hsl(240deg 30% 65%);
    --color-text-search: hsl(0deg 0% 100% / 75%);
    --color-text-search-hover: hsl(0deg 0% 100%);
    --color-text-search-placeholder: hsl(0deg 0% 100% / 50%);
    --color-text-empty-list-message: hsl(0deg 0% 67%);
    --color-text-popover-menu: hsl(0deg 0% 100% / 80%);
    --color-text-full-name: hsl(0deg 0% 100%);
    --color-text-item: hsl(0deg 0% 50%);
    --color-text-personal-menu-no-status: hsl(0deg 0% 100% 35%);
    --color-text-personal-menu-some-status: hsl(0deg 0% 100% 50%);
    --color-text-sidebar-popover-menu: hsl(236deg 33% 90%);
    /* 75% opacity of --color-text-default against --color-background.
       We use color-mix here to avoid defining a separate, compounding
       `opacity` property, and also to preserve a record of the
       relationship of the color of sidebar headings to other colors. */
    --color-text-sidebar-heading: color-mix(
        in srgb,
        hsl(0deg 0% 75%) 75%,
        hsl(0deg 0% 11%)
    );
    --color-text-url-hover: hsl(200deg 79% 66%);
    --color-text-settings-field-hint: hsl(0deg 0% 52%);

    /* Markdown code colors */
    /* Note that Markdown code-link colors are identical
       to light theme, and so are not redeclared here. */
    --color-markdown-code-text: hsl(0deg 0% 100% / 85%);
    --color-markdown-code-background: hsl(0deg 0% 100% / 8%);
    --color-markdown-code-background-mentions: var(
        --color-markdown-code-background
    );
    --color-markdown-pre-text: var(--color-markdown-code-text);
    --color-markdown-pre-border: transparent;
    --color-markdown-pre-background: hsl(0deg 0% 100% / 4%);
    --color-markdown-pre-background-mentions: hsl(0deg 0% 100% / 5%);
    --color-markdown-pre-border-mentions: var(--color-markdown-pre-border);

    /* Icon colors */
    --color-icon-bot: hsl(180deg 5% 50% / 100%);
    --color-message-action-visible: hsl(217deg 41% 90% / 50%);
    --color-message-action-interactive: hsl(217deg 41% 90% / 100%);
    --color-left-sidebar-navigation-icon: hsl(0deg 0% 100% / 56%);
    --color-vdots-hint: hsl(0deg 0% 100% / 30%);
    --color-vdots-visible: hsl(236deg 33% 80%);
    --color-vdots-hover: hsl(0deg 0% 100%);
    --color-left-sidebar-header-vdots-visible: var(
        --color-left-sidebar-navigation-icon
    );
    --color-tab-picker-icon: hsl(0deg 0% 80%);

    /* Reaction container colors */
    --color-message-reaction-border: hsl(0deg 0% 100% / 15%);
    --color-message-reaction-border-reacted: hsl(0deg 0% 100% / 70%);
    --color-message-reaction-background: hsl(0deg 0% 0% / 30%);
    --color-message-reaction-background-reacted: hsl(0deg 0% 0% / 80%);
    --color-message-reaction-background-hover: hsl(0deg 0% 100% / 10%);
    /* No shadow in dark mode. */
    --color-message-reaction-shadow-inner: transparent;
    --color-message-reaction-text: hsl(0deg 0% 100% / 75%);
    --color-message-reaction-text-reacted: hsl(0deg 0% 100% / 85%);
    --color-message-reaction-button-text: var(--color-message-reaction-text);
    --color-message-reaction-button-text-hover: var(
        --color-message-reaction-text-reacted
    );
    --color-message-reaction-button-background: inherit;
    --color-message-reaction-button-background-hover: var(
        --color-message-reaction-background-hover
    );
    --color-message-reaction-button-border: transparent;
    --color-message-reaction-button-border-hover: var(
        --color-message-reaction-border
    );
    --font-weight-message-reaction: 550;

    /* Message feed loading indicator colors */
    --color-zulip-logo: hsl(0deg 0% 100% / 50%);
    --color-zulip-logo-loading: hsl(0deg 0% 100%);
    --color-recent-view-loading-spinner: hsl(0deg 0% 100% / 60%);
    --color-zulip-logo-z: hsl(214deg 27% 18%);

    /* Message collapsing/condensing button colors */
    --color-show-more-less-button-background: hsla(240deg 44% 56% / 15%);
    --color-show-more-less-button-background-hover: hsl(240deg 44% 56% / 25%);
    --color-show-more-less-button-background-active: hsl(240deg 44% 56% / 15%);

    /* Mention pill colors */
    --color-background-direct-mention: hsl(240deg 13% 20%);
    --color-background-group-mention: hsl(180deg 13% 15%);
    --color-background-text-direct-mention: hsl(240deg 52% 60% / 25%);
    --color-background-text-hover-direct-mention: hsl(240deg 52% 60% / 45%);
    --color-background-text-group-mention: hsl(183deg 52% 40% / 20%);
    --color-background-text-hover-group-mention: hsl(183deg 52% 40% / 30%);

    /* Inbox view */
    --color-background-inbox: var(--color-background);
    --color-background-inbox-no-unreads-illustration: hsl(147deg 40% 55%);
    --color-icon-search-inbox: hsl(0deg 0% 100%);
    --color-inbox-search-text: hsl(0deg 0% 95%);
    --color-border-inbox-search: hsl(0deg 0% 100% / 20%);
    --color-border-inbox-search-hover: hsl(0deg 0% 100% / 40%);
    --color-background-inbox-search: hsl(225deg 6% 10%);
    --color-background-inbox-search-hover: hsl(225deg 6% 8%);
    --color-background-inbox-search-focus: hsl(225deg 6% 7%);
    --color-border-inbox-search-focus: hsl(0deg 0% 100% / 50%);
    --color-box-shadow-inbox-search-focus: hsl(0deg 0% 100% / 40%);
    --color-background-inbox-row: hsl(0deg 0% 14%);
    --color-background-inbox-row-hover: linear-gradient(
            0deg,
            hsl(0deg 0% 100% / 5%) 0%,
            hsl(0deg 0% 100% / 5%) 100%
        ),
        hsl(0deg 0% 14.12%);
    --color-background-btn-inbox-selected: hsl(0deg 0% 100% / 5%);
    --color-background-btn-inbox-focus: hsl(0deg 0% 20%);
    --color-icons-inbox: hsl(0deg 0% 100%);
    --color-background-icon-close-hover: hsl(0deg 0% 100% / 5%);

    /* Navbar dropdown menu constants - Values from Figma design */
    --box-shadow-popover-menu: 0 2.78px 4.12px 0 hsl(0deg 0% 0% / 10%),
        0 5.5113px 8.5783px 0 hsl(0deg 0% 0% / 9%),
        0 8.4377px 13.9271px 0 hsl(0deg 0% 0% / 11%),
        0 12.177px 21.4737px 0 hsl(0deg 0% 0% / 11%),
        0 18.7257px 35.4802px 0 hsl(0deg 0% 0% / 15%),
        0 41px 80px 0 hsl(0deg 0% 0% / 20%);
    --color-navbar-icon: hsl(240deg 35% 60%);
    --color-navbar-spectator-low-attention-brand-button-text: hsl(
        240deg 55% 72% / 100%
    );
    --color-navbar-spectator-low-attention-brand-button-background: transparent;
    --color-navbar-spectator-low-attention-brand-button-background-hover: hsl(
        240deg 56% 70% / 10%
    );
    --color-navbar-spectator-low-attention-brand-button-background-active: hsl(
        240deg 56% 70% / 13%
    );
    --color-navbar-spectator-medium-attention-brand-button-text: hsl(
        240deg 64% 76% / 100%
    );
    --color-navbar-spectator-medium-attention-brand-button-background: hsl(
        240deg 56% 70% / 12%
    );
    --color-navbar-spectator-medium-attention-brand-button-background-hover: hsl(
        240deg 56% 70% / 17%
    );
    --color-navbar-spectator-medium-attention-brand-button-background-active: hsl(
        240deg 56% 70% / 12%
    );
    --color-gear-menu-lighter-text: hsl(0deg 0% 50%);
    --color-gear-menu-blue-text: hsl(217deg 100% 65%);
    --color-header-button-hover: hsl(0deg 0% 100% / 4%);
    /* The second color value aligns with
       --color-background-navbar */
    --color-header-button-hover-no-alpha: color-mix(
        in srgb,
        hsl(0deg 0% 100%) 4%,
        hsl(0deg 0% 13%)
    );
    --color-header-button-focus: hsl(0deg 0% 100% / 7%);
    /* The second color value aligns with
       --color-background-navbar */
    --color-header-button-focus-no-alpha: color-mix(
        in srgb,
        hsl(0deg 0% 100%) 7%,
        hsl(0deg 0% 13%)
    );
    --color-fill-user-invite-copy-icon: hsl(236deg 33% 90%);
    --icon-chevron-down: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 16 16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M3.52977 5.52973C3.78947 5.27004 4.21053 5.27004 4.47023 5.52973L8 9.05951L11.5298 5.52973C11.7895 5.27004 12.2105 5.27004 12.4702 5.52973C12.7299 5.78943 12.7299 6.21049 12.4702 6.47019L8.47023 10.4702C8.21053 10.7299 7.78947 10.7299 7.52977 10.4702L3.52977 6.47019C3.27008 6.21049 3.27008 5.78943 3.52977 5.52973Z' fill='%23FFFFFFBF'/%3E%3C/svg%3E%0A");

    /* Button colors on modals and message editing. */
    --color-exit-button-text: hsl(0deg 0% 100%);
    --color-exit-button-background: hsl(226deg 1% 30% / 50%);
    --color-exit-button-background-interactive: hsl(226deg 1% 30% / 65%);

    /* Emoji-picker colors */
    --color-background-emoji-picker-popover: hsl(0deg 0% 0% / 20%);
    --color-background-emoji-picker-popover-tab-item-active: hsl(
        0deg 0% 0% / 50%
    );
    --color-background-emoji-picker-emoji-focus: hsl(212deg 28% 8% / 75%);
    --color-box-shadow-emoji-picker-emoji-focus: hsl(0deg 0% 98%);
    --color-background-emoji-picker-emoji-reacted: hsl(0deg 0% 0% / 50%);
    --color-border-emoji-picker-emoji-reacted: hsl(0deg 0% 0% / 90%);
    --color-background-emoji-picker-emoji-reacted-focus: hsl(0deg 0% 20% / 70%);
    --color-border-add-subscription-button-focus: hsl(0deg 0% 67%);
}

@media screen {
    :root.dark-theme {
        @extend %dark-theme;
    }
}

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