/* ABOUTME: Base element styles for the Plumbline theme. */
/* ABOUTME: All values reference design tokens via CSS custom properties. */

@layer base {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    font-size: var(--pl-type-root);
  }

  body {
    margin: 0;
    font-family: var(--pl-font-body);
    font-size: var(--pl-text-base);
    line-height: var(--pl-leading-normal);
    color: var(--pl-color-text-primary);
    background-color: var(--pl-color-surface-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--pl-font-heading);
    font-weight: var(--pl-weight-bold);
    line-height: var(--pl-leading-tight);
    letter-spacing: var(--pl-tracking-tight);
    color: var(--pl-color-neutral-900);
    margin-top: 0;
  }

  h1 { font-size: var(--pl-text-fluid-h1); }
  h2 { font-size: var(--pl-text-fluid-h2); }
  h3 { font-size: var(--pl-text-2xl); }
  h4 { font-size: var(--pl-text-xl); }
  h5 {
    font-size: var(--pl-text-lg);
    line-height: 1.35;
  }
  h6 {
    font-size: var(--pl-text-sm);
    line-height: 1.4;
    letter-spacing: var(--pl-tracking-wide);
    text-transform: uppercase;
  }

  /* Even out display headings; covers hero/CTA/card/staff titles (all h1-h3). */
  h1, h2, h3 {
    text-wrap: balance;
  }

  p {
    margin-top: 0;
    margin-bottom: var(--pl-space-4);
    /* Prevent last-line orphans in prose (leads, body, FAQ, bios). */
    text-wrap: pretty;
  }

  a:where(:not(.wp-element-button)) {
    color: var(--pl-color-text-link);
    text-decoration-line: underline;
    text-decoration-color: var(--pl-link-underline-color);
    text-decoration-thickness: var(--pl-link-underline-thickness);
    text-underline-offset: var(--pl-link-underline-offset);
    text-decoration-skip-ink: auto;
    transition:
      color var(--pl-duration-fast) var(--pl-easing-default),
      text-decoration-color var(--pl-duration-fast) var(--pl-easing-default),
      text-decoration-thickness var(--pl-duration-fast) var(--pl-easing-default);
  }

  a:where(:not(.wp-element-button)):hover {
    color: var(--pl-color-text-link-hover);
    text-decoration-color: var(--pl-link-underline-color-hover);
    text-decoration-thickness: var(--pl-link-underline-thickness-hover);
  }

  :where(h1, h2, h3, h4, h5, h6) a:where(:not(.wp-element-button)) {
    color: inherit;
    text-decoration-thickness: var(--pl-link-underline-thickness-heading);
  }

  a:where(:not(.wp-element-button)):focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 3px;
  }

  img {
    max-width: 100%;
    height: auto;
    display: block;
  }

  ul, ol {
    padding-inline-start: 1.35em;
    margin-top: 0;
    margin-bottom: var(--pl-space-4);
  }

  li {
    padding-inline-start: 0.15em;
    margin-bottom: 0;
  }

  li + li {
    margin-block-start: 0.35em;
  }

  blockquote {
    margin: 0 0 var(--pl-space-5);
    margin-inline: 0;
    padding-inline-start: var(--pl-space-5);
    border-inline-start: 4px solid var(--pl-color-primary);
    font-style: normal;
    color: var(--pl-color-text-primary);
  }

  blockquote p {
    font-size: 1.0625em;
    line-height: var(--pl-leading-normal);
  }

  blockquote cite {
    display: block;
    margin-block-start: var(--pl-space-3);
    font-size: 0.9375em;
    font-style: normal;
    color: var(--pl-color-text-secondary);
  }

  hr {
    border: none;
    border-top: var(--pl-border-thin) solid var(--pl-color-neutral-200);
    margin-block: var(--pl-space-6);
  }

  code {
    font-family: var(--pl-font-mono);
    font-size: 0.875em;
    background: var(--pl-color-code-bg);
    border: var(--pl-border-thin) solid var(--pl-color-code-border);
    border-radius: var(--pl-radius-sm);
    padding: 0.15em 0.35em;
  }

  pre {
    font-family: var(--pl-font-mono);
    font-size: var(--pl-text-sm);
    background: var(--pl-color-code-bg);
    border: var(--pl-border-thin) solid var(--pl-color-code-border);
    padding: var(--pl-space-4);
    border-radius: var(--pl-radius-md);
    overflow-x: auto;
  }

  pre code {
    background: transparent;
    border: 0;
    border-radius: 0;
    padding: 0;
    font-size: inherit;
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--pl-space-5);
  }

  th, td {
    padding: var(--pl-space-3);
    text-align: left;
    border-bottom: var(--pl-border-thin) solid var(--pl-color-neutral-200);
  }

  th {
    font-weight: var(--pl-weight-semibold);
  }

  :where(.pl-section__inner, .pl-cta__inner, .pl-split__content, .pl-entry__content) h2 {
    margin-block-start: 0;
    margin-block-end: 0.75em;
  }

  :where(.pl-section__inner, .pl-cta__inner, .pl-split__content, .pl-entry__content)
    :where(h3, h4, h5, h6) {
    margin-block-start: 1.75em;
    margin-block-end: 0.5em;
  }

  :where(.pl-section__inner, .pl-cta__inner, .pl-split__content, .pl-entry__content)
    :where(h2, h3, h4, h5, h6) + :where(p, ul, ol) {
    margin-block-start: 0;
  }

  :where(.pl-section__inner, .pl-cta__inner, .pl-split__content, .pl-entry__content)
    li > :where(ul, ol) {
    margin-block-start: 0.4em;
    margin-block-end: 0.6em;
  }

  /* Block stacks: trailing margin on the last child skews vertical rhythm. */
  :where(
    .pl-section__inner,
    .pl-cta__inner,
    .pl-split__content,
    .pl-entry__content,
    .pl-hero__content,
    .pl-faq__inner
  ) > :last-child {
    margin-block-end: 0;
  }

  :where(p, .wp-block-paragraph).has-text-align-center {
    max-width: var(--pl-width-prose-centered);
    margin-inline: auto;
  }
}