gnome-shell/data/theme/gnome-shell-sass/widgets/_dialogs.scss

/* Modal Dialogs */

.modal-dialog {
  border-radius: $modal_radius;
  @extend %bubble_panel;

  .modal-dialog-content-box {
    margin: 32px 40px;
    spacing: 32px;
    max-width: 28em;
  }

  .run-dialog-entry { width: 20em; margin-bottom: 6px; }
  .run-dialog-error-box {
    padding-top: 16px;
    spacing: 6px;
  }

  .run-dialog-label {
    @include fontsize($base_font_size + 1.1);
    font-weight: normal;
    color: $fg_color;
    padding-bottom: .4em;
  }
}

.mount-dialog-subject,
.end-session-dialog-subject { //this should be a generic header class
  @include fontsize($base_font_size + 3);
}

.modal-dialog-linked-button {
  @extend %bubble_button;
}

/* Message Dialog */
.message-dialog-content {
  max-width: 28em;
  spacing: 20px;
}

.message-dialog-title {
  font-weight: bold;
}

.message-dialog-subtitle {
  color: $fg_color;
  font-weight: bold;
}

/* ShellMountOperation Dialogs */
.shell-mount-operation-icon {
  icon-size: $base_icon_size * 3;
}

.mount-dialog {
  spacing: 24px;

  .message-dialog-title {
    padding-top: 10px;
    padding-left: 17px;
    padding-bottom: 6px;
    max-width: 34em;
  }

  .message-dialog-title:rtl {
    padding-left: 0px;
    padding-right: 17px;
  }

  .message-dialog-body {
    padding-left: 17px;
    width: 28em;
  }

  .message-dialog-body:rtl {
    padding-left: 0px;
    padding-right: 17px;
  }
}

.mount-dialog-app-list {
  max-height: 200px;
  padding-top: 24px;
  padding-left: 49px;
  padding-right: 32px;
}

.mount-dialog-app-list:rtl {
  padding-right: 49px;
  padding-left: 32px;
}

.mount-dialog-app-list-item {
  color: lighten($fg_color,10%);
  &:hover { color: $fg_color; }
  &:ltr { padding-right: 1em; }
  &:rtl { padding-left: 1em; }
}

.mount-dialog-app-list-item-icon {
  &:ltr { padding-right: 17px; }
  &:rtl { padding-left: 17px; }
}

.mount-dialog-app-list-item-name {
  @include fontsize($base_font_size - 1);
}


/* Password or Authentication Dialog */

.prompt-dialog {
  @extend %bubble_panel;
  //this is the width of the entire modal popup
  width: 34em;

  .message-dialog-content { spacing: $base_spacing * 4; }
  .message-dialog-title { color: lighten($fg_color,15%); }
}

.prompt-dialog-description:rtl {
  text-align: right;
}

.prompt-dialog-password-box {
  spacing: 1em;
  padding-bottom: 1em;
}

.prompt-dialog-error-label {
  @include fontsize($base_font_size - 1);
  color: $warning_color;
  padding-bottom: 8px;
}

.prompt-dialog-info-label {
  @include fontsize($base_font_size - 1);
  padding-bottom: 8px;
}

.prompt-dialog-null-label {
  @include fontsize($base_font_size - 1);
  padding-bottom: 8px;
}

.prompt-dialog-pim-box {
  spacing: 1em;
}

.prompt-dialog-grid {
  spacing-rows: 15px;
  spacing-columns: 1em;
}

.prompt-dialog-keyfiles-box {
  spacing: 1em;
}

.prompt-dialog-button.button {
  padding: 8px;
}

.prompt-dialog-caps-lock-warning {
  @extend .prompt-dialog-error-label;
  padding-left: 6.2em;
}


/* Polkit Dialog */

.polkit-dialog-user-layout {
  padding-left: 10px;
  spacing: 10px;
  &:rtl {
    padding-left: 0px;
    padding-right: 10px;
  }
}

.polkit-dialog-user-root-label {
  color: $warning_color;
}

.polkit-dialog-user-icon {
  border-radius: 99px;
  background-size: contain;
  width: 48px;
  height: 48px;
}

/* Audio selection dialog */
.audio-device-selection-dialog {
  @extend %bubble_panel;
  spacing: 30px;
}

.audio-selection-content {
  spacing: 20px;
  padding: 24px;
}

.audio-selection-title {
  font-weight: bold;
  text-align: center;
}

.audio-selection-box {
  spacing: 20px;
}

.audio-selection-device {
  border: 1px solid $bubble_borders_color;
  border-radius: 12px;
  &:hover,&:focus { background-color: $hover_bg_color; }
  &:active { 
    background-color: $selected_bg_color;
    color: $selected_fg_color;
  }
}

.audio-selection-device-box {
  padding: 20px;
  spacing: 20px;
}

.audio-selection-device-icon {
  icon-size: $base_icon_size * 4;
}

/* Access Dialog */
.access-dialog {
  @extend %bubble_panel;
  spacing: 30px;
}

/* Geolocation Dialog */
.geolocation-dialog {
  @extend %bubble_panel;
  spacing: 30px;
}

/* Extension Dialog */
.extension-dialog {
  @extend %bubble_panel;
  .message-dialog-title { font-weight: normal; color: $fg_color; }
}

/* Inhibit-Shortcuts Dialog */
.inhibit-shortcuts-dialog {
  @extend %bubble_panel;
  spacing: 30px;
}

/* Network Agent Dialog */

.network-dialog-secret-table {
  spacing-rows: 15px;
  spacing-columns: 1em;
}

.keyring-dialog-control-table {
  spacing-rows: 15px;
  spacing-columns: 1em;
}