discourse/themes/horizon/scss/main.scss

@use "lib/viewport";

:root {
  --main-grid-gap: 0.5em;
}

html:not(:has(.has-full-page-chat)) {
  background-color: var(--background-color);

  @include viewport.until(lg) {
    background-color: var(--d-content-background);
  }
}

body {
  -webkit-font-smoothing: antialiased;

  @include viewport.until(sm) {
    background-color: var(--d-content-background);
  }

  @include viewport.from(lg) {
    &.account-created-page,
    &.activate-account-page {
      background: var(--background-color);
    }
  }
}

#main-outlet-wrapper {
  @include viewport.from(lg) {
    gap: var(--main-grid-gap);
  }
}

body.has-sidebar-page.has-full-page-chat #main-outlet-wrapper {
  column-gap: var(--main-grid-gap);
  background-color: var(--background-color);

  @include viewport.until(lg) {
    background-color: var(--secondary);
  }
}

body.has-full-page-chat:not(.has-sidebar-page) {
  .d-header {
    background-color: var(--background-color);
  }

  #main-outlet-wrapper {
    gap: var(--main-grid-gap);

    @include viewport.until(lg) {
      gap: 0;
    }
  }
}

body.has-sidebar-page #main-outlet-wrapper {
  #main-outlet {
    max-width: unset;
  }

  @include viewport.from(lg) {
    gap: var(--main-grid-gap);
    padding-right: var(--main-grid-gap);
  }
}

body:not(.has-sidebar-page) #main-outlet-wrapper {
  @include viewport.from(lg) {
    grid-template-columns: 0 minmax(0, 1fr) 0;
  }
}

body:not(.has-full-page-chat, .wizard) {
  @include viewport.from(xl) {
    background-color: var(--background-color);
  }

  #main-outlet-wrapper {
    #main-outlet {
      width: 100%;
      max-width: unset;
      padding-bottom: var(--space-6);
      border-radius: var(--d-border-radius-large);
      background-color: var(--d-content-background);

      @include viewport.until(lg) {
        border-radius: 0;
      }

      html.composer-open & {
        padding-bottom: var(--composer-height);
      }

      @include viewport.from(sm) {
        > *:not(
            .experimental-screen,
            .activate-account,
            .discourse-kanban-board-viewer
          ) {
          box-sizing: border-box;
          max-width: 1000px;
          margin-inline: auto;
          padding-inline: var(--space-6);
        }
      }
    }
  }
}

body.has-admin-changes-banner #main-outlet-wrapper #main-outlet {
  // makes space so save banner doesn't overlap content
  padding-bottom: 6em;
}

@include viewport.until(sm) {
  .welcome-banner {
    display: none;
  }
}

#list-area {
  .topic-list-body {
    padding-top: var(--space-4);
  }
}

aside.onebox {
  background-color: var(--d-content-background);
}

.d-editor-preview-wrapper {
  border-radius: var(--d-border-radius);
  padding: 1em;
  background-color: var(--d-content-background);
}

.no-ember {
  #main-outlet {
    border-radius: var(--d-border-radius-large);
    max-height: calc(100vh - 50px - 1em - var(--main-grid-gap));
  }
}

.activate-account {
  .activate-account-button,
  .continue-button {
    margin-inline: 0;
  }
}