@layer components {
  /* ==========================================================================
     Buttons — 2px radius, uppercase 12px; teal fill is the only chromatic fill
     ========================================================================== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 10px 20px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.018em;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
    text-align: center;
    user-select: none;
    border: 1px solid transparent;
    line-height: 1.2;
  }

  /* Primary action — Deep Teal, one per view */
  .btn-primary {
    background-color: var(--color-accent);
    color: #ffffff;
  }

  .btn-primary:hover {
    background-color: var(--color-accent-hover);
    color: #ffffff;
  }

  /* Ghost text button — typography only, underline on hover */
  .btn-secondary {
    background-color: transparent;
    border-color: transparent;
    color: var(--color-text-primary);
    padding-inline: 12px;
  }

  .btn-secondary:hover {
    color: var(--color-text-primary);
    text-decoration: underline;
    text-underline-offset: 5px;
    text-decoration-thickness: 1px;
  }

  /* Outlined variant for contexts that need a visible boundary */
  .btn-outline {
    background-color: transparent;
    border-color: var(--color-text-primary);
    color: var(--color-text-primary);
  }

  .btn-outline:hover {
    background-color: var(--color-text-primary);
    color: var(--color-bg);
  }

  .btn-link {
    color: var(--color-text-primary);
    padding: 0;
    font-weight: var(--font-weight-semibold);
    border-radius: 0;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.018em;
  }

  .btn-link:hover {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 5px;
  }

  /* ==========================================================================
     Cards — flat cream panels separated by hairlines, never shadows
     ========================================================================== */
  .card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    transition: border-color var(--transition-normal);
  }

  .card:hover {
    border-color: var(--color-text-primary);
  }

  /* Elevated panel — Paper White above the cream */
  .glass-card {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-lg);
    transition: border-color var(--transition-normal);
  }

  .glass-card:hover {
    border-color: var(--color-text-primary);
  }

  /* Accent border cards — one thin chromatic stroke per container */
  .accent-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
  }

  .accent-card--aubergine { border-color: var(--color-accent-aubergine); }
  .accent-card--iris { border-color: var(--color-accent-iris); }
  .accent-card--cobalt { border-color: var(--color-accent-cobalt); }
  .accent-card--ice { border-color: var(--color-accent-ice); }
  .accent-card--teal { border-color: var(--color-accent); }

  /* ==========================================================================
     Timeline (Career) — a single hairline spine, no pills, no fills
     ========================================================================== */
  .timeline-container {
    position: relative;
    padding-inline-start: var(--spacing-lg);
    border-inline-start: 1px solid var(--color-surface-border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
  }

  .timeline-item {
    position: relative;
  }

  .timeline-dot {
    position: absolute;
    top: 8px;
    left: calc(-1 * var(--spacing-lg) - 3.5px);
    width: 7px;
    height: 7px;
    border-radius: 0;
    background-color: var(--color-bg);
    border: 1px solid var(--color-text-secondary);
    z-index: 2;
  }

  .timeline-item:hover .timeline-dot,
  .timeline-item.active .timeline-dot {
    border-color: var(--color-text-primary);
    background-color: var(--color-text-primary);
  }

  .timeline-header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
  }

  @media (min-width: 768px) {
    .timeline-header {
      flex-direction: row;
      justify-content: space-between;
      align-items: baseline;
    }
  }

  .timeline-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
  }

  .timeline-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
  }

  .timeline-date {
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
  }

  .timeline-content {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
  }

  .timeline-content strong {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
  }

  .timeline-bullet-list {
    margin-top: var(--spacing-sm);
    padding-inline-start: var(--spacing-md);
    list-style-type: disc;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .timeline-bullet-list li {
    line-height: var(--line-height-body);
  }

  /* ==========================================================================
     Tech / stack listing — quiet rows and small marks, no motion tricks
     ========================================================================== */
  .tech-category-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-label);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-surface-border);
    padding-bottom: var(--spacing-sm);
  }

  .tech-grid-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: var(--spacing-sm);
  }

  .tech-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: transparent;
    border: none;
    padding: var(--spacing-sm);
    text-align: center;
  }

  .tech-icon {
    width: 36px;
    height: 36px;
    object-fit: contain;
    filter: grayscale(1) opacity(0.65);
    transition: filter var(--transition-normal);
  }

  .tech-card:hover .tech-icon {
    filter: grayscale(0) opacity(1);
  }

  .tech-name {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
  }

  /* ==========================================================================
     Client logo strip — logos multiplied onto the cream, no boxes
     ========================================================================== */
  .client-logo-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg) var(--spacing-xl);
    padding-block: var(--spacing-md);
  }

  .client-logo-card {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 56px;
  }

  .client-logo-img {
    max-height: 100%;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    mix-blend-mode: multiply;
    filter: grayscale(1) opacity(0.55);
    transition: filter var(--transition-normal);
  }

  .client-logo-card:hover .client-logo-img {
    filter: grayscale(0) opacity(0.9);
  }

  /* ==========================================================================
     Metrics — whisper-weight numerals over hairlines
     ========================================================================== */
  .metric-card {
    text-align: left;
    background-color: transparent;
    border: none;
    border-top: 1px solid var(--color-surface-border);
    border-radius: 0;
    padding: var(--spacing-md) 0 0 0;
  }

  .metric-number {
    font-family: var(--font-heading);
    font-size: var(--font-size-xxl);
    font-weight: var(--font-weight-regular);
    color: var(--color-text-primary);
    line-height: 1.09;
    margin-bottom: var(--spacing-xs);
    font-variant-numeric: tabular-nums;
  }

  .metric-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-label);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
  }

  .metric-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
  }

  /* ==========================================================================
     Article index cards — flat, hairline-framed, typographic
     ========================================================================== */
  .insight-card {
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    height: 100%;
    transition: border-color var(--transition-normal);
  }

  .insight-card:hover {
    border-color: var(--color-text-primary);
  }

  .insight-badge {
    background-color: transparent;
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-label);
    padding: 0;
    align-self: flex-start;
    border-radius: 0;
    margin: var(--spacing-md) var(--spacing-md) 0 var(--spacing-md);
  }

  .insight-content {
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .insight-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-regular);
    line-height: 1.2;
    color: var(--color-text-primary);
  }

  .insight-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-body);
  }

  .insight-footer {
    padding: var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid var(--color-surface-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: transparent;
  }

  .insight-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-variant-numeric: tabular-nums;
  }

  /* ==========================================================================
     Article index — stacked editorial rows over hairlines
     ========================================================================== */
  .article-index {
    border-top: 1px solid var(--color-surface-border);
  }

  .article-row {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: baseline;
    gap: var(--spacing-md);
    padding-block: var(--spacing-md);
    border-bottom: 1px solid var(--color-surface-border);
    color: var(--color-text-primary);
    transition: background-color var(--transition-fast);
  }

  .article-row:hover {
    background-color: var(--color-surface-hover);
  }

  .article-row-num {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-variant-numeric: tabular-nums;
    min-width: 2ch;
  }

  .article-row-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .article-row-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-regular);
    line-height: 1.2;
  }

  .article-row:hover .article-row-title {
    text-decoration: underline;
    text-underline-offset: 5px;
    text-decoration-thickness: 1px;
  }

  .article-row-tag {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-label);
    color: var(--color-text-muted);
  }

  .article-row-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
  }

  /* ==========================================================================
     Contact form — underlined fields, sharp bottom edges
     ========================================================================== */
  .contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .form-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: var(--tracking-label);
    color: var(--color-text-primary);
  }

  .form-control {
    background-color: transparent;
    border: none;
    border-bottom: 1px solid #b3aea7; /* Driftwood */
    border-radius: 0;
    padding: 10px 0;
    width: 100%;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast);
  }

  .form-control::placeholder {
    color: var(--color-text-muted);
  }

  .form-control:focus {
    border-bottom: 2px solid var(--color-accent);
    outline: none;
    margin-bottom: -1px;
  }

  .form-control:user-invalid {
    border-bottom-color: var(--color-error);
  }

  textarea.form-control {
    resize: vertical;
    min-height: 120px;
  }

  .form-alert {
    display: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-top: var(--spacing-md);
  }

  .form-alert-success {
    background-color: transparent;
    color: var(--color-success);
    border: 1px solid var(--color-success);
  }

  .form-alert-error {
    background-color: transparent;
    color: var(--color-error);
    border: 1px solid var(--color-error);
  }
}