@layer components {
  /* Parent of a popup must establish positioning context */
  :has(> .popup) {
    position: relative;
  }

  .popup {
    border: 0;
    background: var(--color-canvas);
    border-radius: 0.5em;
    box-shadow: var(--shadow);
    color: var(--color-ink);
    inset: auto;
    inset-block-start: calc(100% + 4px);
    inset-inline-end: 0;
    max-block-size: 70dvh;
    max-inline-size: min(45ch, calc(100vw - var(--block-space-double)));
    min-inline-size: 20ch;
    overflow: auto;
    padding: var(--block-space-half);
    position: absolute;
    z-index: var(--z-dropdown);
  }

  .popup__list {
    display: flex;
    flex-direction: column;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 1px;
  }

  .popup__btn {
    align-items: center;
    background: transparent;
    border: none;
    border-radius: 0.3em;
    color: var(--color-ink);
    cursor: pointer;
    display: flex;
    font-size: var(--text-small);
    font-weight: 500;
    gap: var(--inline-space-half);
    inline-size: 100%;
    padding: var(--inline-space-half);
    text-align: start;
    text-decoration: none;

    &:hover {
      background: var(--color-ink-lightest);
    }
  }

  .popup hr {
    border: none;
    border-block-start: 1px solid var(--color-ink-lightest);
    margin-block: 0.25em;
  }

  /* Alignment modifiers */
  .popup--align-left {
    inset-inline-end: auto;
    inset-inline-start: 0;
  }

  .popup--above {
    inset-block-start: auto;
    inset-block-end: calc(100% + 4px);
  }

  .popup--above.popup--animated {
    transform-origin: bottom;
  }

  /* Animated popup (matches dialog animation) */
  .popup--animated {
    opacity: 0;
    transform: scale(0.85);
    transform-origin: top right;
    transition-behavior: allow-discrete;
    transition-duration: calc(var(--dialog-duration) / 2);
    transition-property: display, opacity, overlay, transform;
    transition-timing-function: ease-out;

    &[open] {
      opacity: 1;
      transform: scale(1);
      transition-duration: var(--dialog-duration);
    }

    @starting-style {
      &[open] {
        opacity: 0;
        transform: scale(0.85);
      }
    }
  }
}