/* =============================================================================
   BUAMS AI new-ui — LEGAL DOCUMENTS (privacy policy, terms)
   Spec: /frontend_design.md §K.13

   The prose styling itself comes from blog.css (.bui-prose), which the template
   loads first. This file adds only the document shell: header, contents rail,
   reading measure and the print rules a legal page needs (spec §10).
   ============================================================================= */

.bui-legal-head {
  padding-block: var(--bui-space-8) var(--bui-space-6);
  background:
    radial-gradient(ellipse 60% 60% at 78% -20%, var(--bui-primary-50), transparent 60%),
    var(--bui-surface);
  border-bottom: 1px solid var(--bui-line);
}

.bui-legal-headline {
  margin-top: var(--bui-space-6);
}

.bui-legal-title {
  margin-top: var(--bui-space-3);
  font-size: clamp(1.75rem, 1.3rem + 1.8vw, 2.375rem);
  line-height: 1.15;
  font-weight: var(--bui-fw-heavy);
  letter-spacing: -.02em;
  color: var(--bui-ink-900);
}

.bui-legal-updated {
  margin-top: var(--bui-space-3);
  font-size: var(--bui-text-sm);
  color: var(--bui-ink-500);
}

/* ── Layout: contents rail + document ─────────────────────────────────────── */
.bui-legal-layout {
  display: grid;
  grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
  align-items: start;
  gap: var(--bui-space-12);
}

.bui-legal-body {
  min-width: 0;
  /* A legal document is read, not skimmed. Hold the measure near 70ch even
     when the rail is absent. */
  max-width: 72ch;
}

.bui-legal-body.is-wide {
  max-width: 78ch;
  margin-inline: auto;
}

/* Only one column when there is no rail to show. */
.bui-legal-layout:has(> .bui-legal-body.is-wide:only-child) {
  grid-template-columns: minmax(0, 1fr);
}

/* ── Contents rail ────────────────────────────────────────────────────────── */
.bui-legal-toc {
  position: sticky;
  top: 96px;   /* clears the sticky site header */
  min-width: 0;
  padding: var(--bui-space-5);
  background: var(--bui-surface-2);
  border: 1px solid var(--bui-line);
  border-radius: var(--bui-radius-lg);
  max-height: calc(100vh - 140px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.bui-legal-toc-title {
  margin-bottom: var(--bui-space-3);
  font-size: var(--bui-text-overline);
  font-weight: var(--bui-fw-heavy);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--bui-ink-500);
}

.bui-legal-toc ul {
  display: flex;
  flex-direction: column;
  gap: var(--bui-space-1);
  padding: 0;
  list-style: none;
}

.bui-legal-toc a {
  display: block;
  padding: var(--bui-space-2);
  border-radius: var(--bui-radius-sm);
  font-size: var(--bui-text-sm);
  line-height: var(--bui-lh-snug);
  color: var(--bui-ink-700);
  overflow-wrap: anywhere;
}

.bui-legal-toc a:hover {
  background: var(--bui-primary-50);
  color: var(--bui-primary-700);
  text-decoration: none;
}

.bui-legal-toc a:focus-visible {
  outline: 2px solid var(--bui-primary-700);
  outline-offset: 1px;
}

/* Anchor targets must clear the sticky header when jumped to. */
.bui-legal-prose h2,
.bui-legal-prose h3 {
  scroll-margin-top: 96px;
}

/* ── Document tweaks on top of .bui-prose ─────────────────────────────────── */
.bui-legal-prose {
  font-size: 1rem;
  line-height: 1.7;
}

/* Stored documents lean on <p><strong>…</strong></p> as pseudo headings rather
   than real heading tags, so give a paragraph that is entirely bold a little
   more room above it. */
.bui-legal-prose p > strong:only-child {
  display: inline-block;
  padding-top: var(--bui-space-2);
  color: var(--bui-ink-900);
}

.bui-legal-prose hr {
  margin-block: var(--bui-space-8);
}

/* ── Footer actions ───────────────────────────────────────────────────────── */
.bui-legal-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--bui-space-4);
  flex-wrap: wrap;
  margin-top: var(--bui-space-10);
  padding-top: var(--bui-space-6);
  border-top: 1px solid var(--bui-line);
}

.bui-legal-foot-links {
  display: flex;
  align-items: center;
  gap: var(--bui-space-2);
  flex-wrap: wrap;
}

@media (max-width: 991.98px) {
  .bui-legal-layout { grid-template-columns: minmax(0, 1fr); gap: var(--bui-space-8); }
  .bui-legal-body { max-width: none; }
  /* Static, and above the document, so it is a jump list rather than a rail. */
  .bui-legal-toc { position: static; max-height: none; }
}

/* ── Print (spec §10) ─────────────────────────────────────────────────────
   Legal documents get printed and filed, so the page has to produce a clean
   sheet: chrome gone, black on white, links resolved to their URLs. */
@media print {
  .bui-site-header,
  .bui-nav-drawer,
  .bui-nav-backdrop,
  .bui-site-footer,
  .bui-crisis-notice,
  .bui-float-contact,
  .bui-legal-toc,
  .bui-legal-foot,
  .bui-crumbs,
  .bui-skip-link {
    display: none !important;
  }

  .bui-legal-head {
    padding: 0;
    background: none;
    border: 0;
  }

  .bui-legal-layout {
    display: block;
  }

  .bui-legal-body,
  .bui-legal-body.is-wide {
    max-width: none;
    margin: 0;
  }

  .bui-legal-prose,
  .bui-legal-title,
  .bui-legal-updated {
    color: #000 !important;
  }

  /* A printed link is useless without its destination. */
  .bui-legal-prose a::after {
    content: ' (' attr(href) ')';
    font-size: .85em;
    word-break: break-all;
  }

  /* Never split a heading from the text it introduces. */
  .bui-legal-prose h2,
  .bui-legal-prose h3 {
    break-after: avoid;
  }

  .bui-legal-prose p,
  .bui-legal-prose li {
    break-inside: avoid;
  }
}