@layer components {
  .panel {
    background-color: var(--panel-bg, var(--color-canvas));
    border: var(--panel-border-size, 1px) solid var(--panel-border-color, var(--color-ink-lighter));
    border-radius: var(--panel-border-radius, 1em);
    color: var(--color-ink);
    inline-size: var(--panel-size, 60ch);
    max-inline-size: 100%;
    padding: var(--panel-padding, var(--block-space));

    @media (min-width: 640px) {
      --panel-size: 100%;

      padding: var(--panel-padding, var(--block-space-double));
    }
  }

  .panel--wide {
    --panel-size: 60ch;
  }

  .panel--centered {
    --panel-border-size: 0;
    --panel-size: 100%;

    @media (min-width: 640px) {
      --panel-size: 42ch;
    }

    /* The column grows to the panel's size but never past the screen, so a
       wider --panel-size (the help page's 52ch) still fits a phone. */
    #main:has(&) {
      display: grid;
      grid-template-columns: minmax(0, max-content);
      justify-content: center;
      margin: auto;
    }
  }

  /* dashboards/_panel: flat white card with an uppercase, icon-led title */
  .titled-panel {
    background-color: var(--color-canvas);
    border-radius: 0.25rem;
    box-shadow: var(--shadow-raised);
    margin-block-end: 0.75rem;
    padding: 1.25rem;
    position: relative;
  }

  .titled-panel__header {
    align-items: center;
    border-block-end: 1px solid var(--color-ink-lighter);
    display: flex;
    justify-content: space-between;
    margin-block-end: 0.75rem;
    padding-block-end: 0.75rem;
  }

  .titled-panel__heading {
    display: flex;
    flex-direction: column;
    row-gap: 0.5rem;
  }

  .titled-panel__title {
    align-items: center;
    color: var(--color-ink-darker);
    display: flex;
    font-size: 0.75rem;
    font-weight: 600;
    gap: 0.5rem;
    line-height: 1.333;
    text-transform: uppercase;
  }

  .titled-panel__icon {
    color: var(--color-primary-400);
    font-size: 1rem;
  }

  .titled-panel__action {
    font-size: 0.75rem;
  }

  .titled-panel__body {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
}