discourse/app/assets/stylesheets/common/base/modal.scss

// Modal wrappers

.d-modal {
  pointer-events: none; // Allow clicks through wrappers so they hit the adjacent backdrop element

  display: flex;
  align-items: center;
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  z-index: z("modal", "content");
  overflow: auto;

  &.-inline {
    position: relative;
  }

  html.keyboard-visible body.ios-safari-composer-hacks & {
    height: calc(var(--composer-vh, 1vh) * 100);
  }

  &__container {
    display: flex;
    flex-direction: column;
    pointer-events: auto;
    box-sizing: border-box;
    margin: 0 auto;
    max-height: 80vh;
    background-color: var(--secondary);
    box-shadow: var(--shadow-modal);
  }

  &__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.5rem 0.5rem 1.5rem; //offset for close button padding
    border-bottom: 1px solid var(--primary-low);

    .modal-close {
      margin-left: auto;
      align-self: start;
      .d-icon {
        font-size: var(--font-up-2);
        color: var(--primary-high);
      }
    }
  }

  .d-modal__primary-action,
  .d-modal__dismiss-action {
    .btn {
      text-transform: capitalize;
    }
  }

  &__title-text {
    font-size: var(--font-up-3);
    line-height: var(--line-height-medium);
  }

  &__title-text,
  &__subtitle-text {
    margin: 0;
  }

  &__body {
    overflow-y: auto;
    padding: 1rem 1.5rem;
    box-sizing: border-box;

    input {
      width: auto;

      &[type="text"] {
        width: 100%;
      }
    }
    textarea {
      width: 100%;
      height: 80px;
    }

    .password-confirmation {
      display: none;
    }

    section.field {
      padding: 0.25em 0;
      margin-bottom: 5px;
      &.with-items {
        display: flex;
        align-items: flex-start;
      }
      .field-item {
        display: inline-block;
        margin-right: 10px;
      }
    }

    pre code {
      white-space: pre-wrap;
      max-width: 100%;
    }
  }
  &__footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--primary-low);
    gap: 0.5rem;
  }
  &__backdrop {
    user-select: none;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: z("modal", "overlay");
    background-color: #000;
    animation: fade 0.3s forwards;

    @media (prefers-reduced-motion) {
      animation-duration: 0s;
    }
  }
}

//legacy

.input-hint-text {
  margin-left: 0.5em;
  color: var(--secondary-high);
}

.modal-backdrop {
  user-select: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: z("modal", "overlay");
  background-color: #111;
  &.fade {
    opacity: 0;
  }
}

.modal-backdrop,
.modal-backdrop.fade.in {
  animation: fade 0.3s;
  @media (prefers-reduced-motion) {
    animation-duration: 0s;
  }
  opacity: 0.9;
  filter: alpha(opacity=90);
}

// fade in
@keyframes fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 0.6;
  }
}

.modal-form {
  margin-bottom: 0;
}

.modal {
  .nav {
    padding: 10px 30px 10px 15px;
    background-color: var(--secondary);
    li > a {
      font-size: var(--font-0);
    }
    border-bottom: 1px solid var(--primary-low);
  }

  &.hidden {
    display: none;
  }

  pre code {
    white-space: pre-wrap;
    max-width: var(--modal-max-width);
  }
}

.reply-where-modal {
  .dialog-content {
    width: 100%;
    min-width: unset;
    max-width: 30em;
  }

  .dialog-footer {
    display: block;
  }

  .btn {
    display: block;
    text-align: left;
    margin-bottom: 0.75em;
    margin-right: 0;
    overflow: hidden;
    width: 100%;

    &.dialog-close {
      display: none;
    }

    &.btn-reply-on-original {
      --text-color: var(--secondary);
    }

    &.btn-reply-where__cancel {
      padding-left: 0;
      margin: 0;
    }

    &.btn-reply-here {
      --text-color: var(--primary);
      .discourse-no-touch & {
        &:hover {
          --text-color: var(--secondary);
        }
      }
    }

    &.btn-reply-where {
      min-height: 3em; // for situations when there are no categories/tags
    }

    .fancy-title {
      display: inline-block;
      width: 100%;

      @include ellipsis;
    }

    .topic-title__top-line {
      display: flex;
      align-items: baseline;
      color: var(--text-color);
      font-size: var(--font-up-1);
      .d-icon {
        color: var(--text-color);
        margin: 0;
      }
    }

    .topic-statuses {
      display: flex;
      font-size: 0.95em;
    }

    .topic-title__bottom-line {
      margin-top: 0.15em;
      display: flex;
      align-items: baseline;
      gap: 0.5em;
      .discourse-tags {
        font-size: var(--font-down-1);
      }
      .badge-category__name,
      .discourse-tag {
        color: var(--text-color);
      }
    }
  }
}

.admin-delete-user-posts-progress-modal {
  .progress-bar {
    height: 15px;
    position: relative;
    background: var(--primary-low-mid);
    border-radius: 25px;
    overflow: hidden;
    margin: 30px 0 20px;
    span {
      display: block;
      width: 0%;
      height: 100%;
      background-color: var(--tertiary);
      position: relative;
      transition: width 0.6s linear;
    }
  }
}

.incoming-email-modal {
  max-height: 80vh;

  .btn {
    background-color: transparent;
    margin-right: 5px;
    &:hover,
    &.active {
      color: var(--primary);
    }
    &.active {
      font-weight: bold;
    }
    &:focus {
      outline: 2px solid var(--primary-low);
    }
  }
  .incoming-email-tabs {
    margin-bottom: 15px;
  }
  .incoming-email-content {
    height: 300px;
    max-width: 100%;
    width: 90vw; // forcing textarea wider
    textarea,
    .incoming-email-html-part {
      height: 95%;
      border: none;
      border-top: 1px solid var(--primary-low);
      padding-top: 10px;
      width: 100%;
    }
    textarea {
      font-family: var(--d-font-family--monospace);
      resize: none;
      border-radius: 0;
      box-shadow: none;
    }
    .incoming-email-html-part {
      width: calc(100% - 36px);
      padding: 10px 4px 4px 4px;
    }
    @media screen and (max-width: 760px) {
      .incoming-email-html-part {
        width: calc(100% - 10px);
      }
    }
  }
}

.change-timestamp {
  width: 28em; // scales with user font-size
  max-width: 90vw; // prevents overflow due to extra large user font-size
}

.change-timestamp {
  #date-container {
    .pika-single {
      position: relative !important; // overriding another important
      display: inline-block;
      margin-top: 0.5em;
    }
  }

  .date-picker-wrapper {
    min-width: 130px;
    margin-right: 0.5em;
  }

  input[type="time"] {
    width: 130px;
  }

  form {
    margin: 0;
  }
}

.flag-modal-body {
  form {
    margin: 0;
  }
  .flag-action-type .controls .checkbox-label {
    margin-bottom: 0.25em;
  }
  .flag-action-type-details {
    width: 100%;
    // max-width: 500px;
    line-height: var(--line-height-large);
    a {
      margin: 0;
    }
  }
  .flag-confirmation {
    margin-top: 0.5em;
    padding-left: 1.125em;
  }
}

.flag-message {
  margin: 0;
}

.custom-message-length {
  color: var(--primary-medium);
  font-size: var(--font-down-1);
}

.ignore-duration-with-username-modal {
  .future-date-input {
    margin-top: 1em;
  }
}

.modal:not(.has-tabs) {
  .modal-tab {
    position: absolute;
    width: 95%;
  }
}

.modal {
  &.has-tabs {
    .modal-tabs {
      display: inline-flex;
      flex-wrap: wrap;
      flex: 1 0 auto;
      margin: 0;

      .modal-tab {
        list-style: none;
        padding: 4px 8px;
        margin-right: 4px;
        cursor: pointer;

        &.is-active {
          color: var(--secondary);
          background: var(--danger);

          &.single-tab {
            background: none;
            color: var(--primary);
            padding: 0;
            font-size: var(--font-up-3);
            font-weight: bold;
          }
        }
      }
    }
  }
}

.bulk-notification-list {
  margin-bottom: 1.5em;
}

.notification-level-radio {
  flex-wrap: wrap;
  align-items: baseline;
  margin-bottom: 0.5em;
  .description {
    width: 100%;
    margin-top: 0.25em;
  }
}

.json-editor-btn-delete {
  @extend .btn-danger;
  @extend .no-text;
}

.json-editor-btn-collapse {
  @extend .no-text;
  @extend .btn-flat;
  @extend .btn-small;
}

.confirm-session {
  &__instructions {
    margin-bottom: 0.5em;
  }

  form {
    margin: 1.5em 0;
  }

  &__passkey {
    margin-top: 1em;
  }

  &__fine-print {
    font-size: var(--font-down-1);
    color: var(--primary-medium);
    max-width: 600px;
  }

  &__reset {
    font-size: var(--font-down-1);
    color: var(--primary-medium);
  }
}

.rename-passkey__message {
  max-width: 500px;
  margin-bottom: 2em;
}