@layer components {
  .phase-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
    font-size: 1.0625rem;
    line-height: var(--leading-normal);
  }

  .phase-timeline__band {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding: 1.25rem var(--space-md);
  }

  .phase-timeline__header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-sm) var(--space-lg);
  }

  .phase-timeline__status {
    margin: 0;
    font-family: var(--xf-font-display);
    font-size: clamp(1.625rem, 3.2vw, 2.375rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.02em;
  }

  .phase-timeline__label {
    font-size: var(--text-base);
    font-weight: 600;
  }

  .phase-timeline__progress {
    display: grid;
    grid-auto-columns: minmax(0, 1fr);
    grid-auto-flow: column;
    gap: var(--space-sm);
  }

  .phase-timeline__segment {
    height: 1.625rem;
    border: var(--xf-border);
    border-radius: var(--xf-radius-sm);
    background: var(--xf-surface);
  }

  .phase-timeline__segment--completed {
    background: var(--xf-green);
  }

  .phase-timeline__segment--failed {
    background: var(--xf-red-soft);
  }

  .phase-timeline__segment--running {
    background-image: linear-gradient(45deg, var(--xf-ink) 25%, transparent 25% 50%, var(--xf-ink) 50% 75%, transparent 75%);
    background-size: 1.25rem 1.25rem;
    animation: phase-timeline-stripes 0.9s linear infinite;
  }

  .phase-timeline__note {
    margin: 0;
    font-size: var(--text-sm);
  }

  .phase-timeline__layout {
    display: grid;
    gap: var(--space-xl);
    align-items: start;
  }

  .phase-timeline__steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .phase-timeline__step {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    padding: var(--space-md);
    border: var(--xf-border);
    border-radius: var(--xf-radius-md);
    background: var(--xf-surface);
  }

  .phase-timeline__step--running {
    box-shadow: var(--xf-shadow-lg);
  }

  .phase-timeline__step--pending {
    border-style: dashed;
    border-color: var(--xf-line-muted);
    background: transparent;
    color: var(--xf-ink-muted);
  }

  .phase-timeline__marker {
    display: flex;
    flex: none;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border: var(--xf-border);
    border-radius: var(--xf-radius-sm);
    font-family: var(--xf-font-display);
    font-size: var(--text-xl);
    font-weight: 800;
  }

  .phase-timeline__step--completed .phase-timeline__marker { background: var(--xf-green-soft); }
  .phase-timeline__step--running .phase-timeline__marker { background: var(--xf-amber); }
  .phase-timeline__step--failed .phase-timeline__marker { background: var(--xf-red-soft); }

  .phase-timeline__step--pending .phase-timeline__marker {
    border-style: dashed;
    border-color: var(--xf-line-muted);
  }

  .phase-timeline__icon {
    width: 1.5rem;
    height: 1.5rem;
  }

  .phase-timeline__body {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: var(--space-xs);
    min-width: 0;
  }

  .phase-timeline__title {
    margin: 0;
    font-family: var(--xf-font-display);
    font-size: 1.375rem;
    font-weight: 800;
  }

  .phase-timeline__why {
    margin: 0;
    color: var(--xf-ink-soft);
  }

  .phase-timeline__step--pending .phase-timeline__why {
    color: inherit;
  }

  .phase-timeline__summary {
    align-self: flex-start;
    margin: 0;
    padding: 0.125rem 0.625rem;
    border: var(--xf-border-thin);
    border-radius: var(--xf-radius-sm);
    background: var(--xf-green-soft);
    color: var(--xf-ink);
    font-weight: 600;
  }

  .phase-timeline__step--failed .phase-timeline__summary {
    background: var(--xf-red-soft);
  }

  .phase-timeline__in-progress {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: 0;
    font-size: var(--text-sm);
    font-weight: 600;
  }

  .phase-timeline__blink {
    width: 0.625rem;
    height: 0.625rem;
    background: var(--xf-ink);
    animation: phase-timeline-blink 1s step-end infinite;
  }

  .phase-timeline__found {
    order: -1;
  }

  .phase-timeline__found-title {
    margin: 0;
    font-family: var(--xf-font-display);
    font-size: 1.375rem;
    font-weight: 800;
  }

  .phase-timeline__findings {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin: 0;
  }

  .phase-timeline__finding {
    display: grid;
    grid-template-columns: minmax(0, 1fr) fit-content(60%);
    align-items: baseline;
    gap: var(--space-md);
    padding-bottom: var(--space-md);
    border-bottom: 2px dashed var(--xf-ink);
  }

  .phase-timeline__finding:last-child {
    padding-bottom: 0;
    border-bottom: none;
  }

  .phase-timeline__finding--pending {
    color: var(--xf-ink-muted);
  }

  .phase-timeline__finding-value {
    justify-self: end;
    margin: 0;
    font-weight: 600;
    text-align: end;
  }

  .phase-timeline__finding--completed .phase-timeline__finding-value {
    font-family: var(--xf-font-display);
    font-size: 1.625rem;
    font-weight: 800;
    line-height: 1;
  }

  .phase-timeline__finding--running .phase-timeline__finding-value,
  .phase-timeline__finding--pending .phase-timeline__finding-value {
    font-family: var(--xf-font-mono);
    font-size: var(--text-sm);
  }

  .phase-timeline__finding--failed .phase-timeline__finding-value {
    padding: 0.125rem 0.625rem;
    border: var(--xf-border-thin);
    border-radius: var(--xf-radius-sm);
    background: var(--xf-red-soft);
    color: var(--xf-ink);
    font-size: var(--text-sm);
  }

  .phase-timeline__compact {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.375rem 0.75rem;
  }

  .phase-timeline__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .phase-timeline__chip {
    gap: 0.375rem;
  }

  .phase-timeline__chip .phase-timeline__icon {
    width: 1rem;
    height: 1rem;
  }

  .phase-timeline__toggle {
    cursor: pointer;
    font-size: 0.8125rem;
    font-weight: 600;
    line-height: 1.25;
    text-decoration: underline;
    text-underline-offset: 0.2em;
  }

  .phase-timeline__toggle:focus-visible {
    outline: var(--xf-focus-ring);
    outline-offset: var(--xf-focus-offset);
  }

  .phase-timeline__disclosure[open] {
    flex-basis: 100%;
  }

  .phase-timeline__disclosure .phase-timeline__found {
    max-width: 28rem;
    margin-top: 0.75rem;
  }

  @media (min-width: 40rem) {
    .phase-timeline__band {
      padding: var(--space-lg);
    }

    .phase-timeline__step {
      padding: 1.25rem var(--space-lg);
    }

    .phase-timeline__step--running .phase-timeline__title {
      font-size: var(--text-xl);
    }
  }

  @media (min-width: 60rem) {
    .phase-timeline__layout {
      grid-template-columns: minmax(0, 1fr) minmax(18rem, 25rem);
    }

    .phase-timeline__found {
      order: 0;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .phase-timeline__segment--running,
    .phase-timeline__blink {
      animation: none;
    }
  }

  @keyframes phase-timeline-stripes {
    to { background-position: 1.25rem 0; }
  }

  @keyframes phase-timeline-blink {
    50% { opacity: 0.25; }
  }
}

@layer modules {
  .phase-timeline__band {
    background: var(--xf-amber);
  }

  .phase-timeline--done .phase-timeline__band {
    background: var(--xf-green-soft);
  }
}