@layer components {
  /* A signal's rate beside its name in the list. */
  .signal-rate {
    color: var(--foreground);
    font-variant-numeric: tabular-nums;
    font-weight: var(--font-weight-medium);
  }

  /* The headline numbers for a signal's window. */
  .signal-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
    gap: 0.75rem;
    margin: 0;
  }

  .signal-stat {
    display: grid;
    align-content: start;
    gap: 0.25rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    dt {
      color: var(--muted-foreground);
      font-size: var(--text-sm);
      line-height: var(--text-sm--line-height);
    }

    dd {
      display: grid;
      gap: 0.125rem;
      margin: 0;
    }
  }

  .signal-stat--primary {
    grid-column: 1 / -1;
  }

  .signal-stat__value {
    font-size: var(--text-xl);
    font-variant-numeric: tabular-nums;
    font-weight: var(--font-weight-semibold);
    line-height: var(--text-xl--line-height);
    letter-spacing: var(--tracking-tight);
  }

  .signal-stat--primary .signal-stat__value {
    font-size: var(--text-display);
    line-height: var(--text-display--line-height);
  }

  .signal-stat__change {
    color: var(--muted-foreground);
    font-size: var(--text-sm);
  }

  /* One bar per day, its height the share of that day's conversations that matched. */
  .signal-trend {
    display: grid;
    grid-auto-columns: minmax(0, 1fr);
    grid-auto-flow: column;
    align-items: end;
    gap: 2px;
    block-size: 8rem;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .signal-trend__day {
    display: flex;
    align-items: end;
    block-size: 100%;
    border-radius: 2px 2px 0 0;
    background: var(--muted);
  }

  .signal-trend__day--empty {
    background: repeating-linear-gradient(to top, var(--muted) 0 1px, transparent 1px 4px);
    opacity: 0.6;
  }

  .signal-trend__bar {
    inline-size: 100%;
    block-size: calc(var(--rate) * 100%);
    min-block-size: 2px;
    border-radius: 2px 2px 0 0;
    background: var(--primary);
    transition: block-size 200ms ease-out;
  }

  .signal-trend__axis {
    display: flex;
    justify-content: space-between;
    color: var(--muted-foreground);
    font-size: var(--text-xs);
  }

  .signal-matches {
    display: grid;
    gap: 0.25rem;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .signal-match {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.25rem 1rem;
    padding: 0.625rem 0.75rem;
    border-radius: var(--radius-md);
    color: inherit;
    text-decoration: none;

    &:hover {
      background: var(--accent);
    }

    &:focus-visible {
      outline: 2px solid var(--ring);
      outline-offset: 2px;
    }
  }

  .signal-match__title {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
  }

  .signal-match__meta {
    color: var(--muted-foreground);
    font-size: var(--text-xs);
    font-variant-numeric: tabular-nums;
  }

  /* Holds the list's space while it loads. */
  .signal-matches__placeholder {
    display: grid;
    gap: 0.5rem;

    span {
      block-size: 2.25rem;
      border-radius: var(--radius-md);
      background: var(--muted);
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .signal-trend__bar {
      transition: none;
    }
  }
}