/* ============================================================
   SII Glossary v1.0 — Web Stylesheet
   Brand-aligned: navy + bronze + parchment (no teal — bronze for links).
   Per IMG_2541 layout: left-rail in-page TOC with active-section indicator.
   ============================================================ */

:root {
  /* Editorial scale tuned tighter than site default for legal-doc readability */
  --glossary-measure: 68ch;        /* max line length in body */
  --glossary-rail-w: 220px;        /* left rail width on desktop */
  --glossary-gutter: 64px;         /* space between rail and content */
  --glossary-text: var(--color-navy-deep);
  --glossary-muted: var(--color-text-muted);
  --glossary-faint: var(--color-text-faint);
  --glossary-rule: rgba(139, 115, 85, 0.35);
  --glossary-link: var(--color-bronze);
  --glossary-link-hover: var(--color-bronze-dark);
}

/* ------------------------------------------------------------
   PAGE BODY
   ------------------------------------------------------------ */
.glossary-body {
  background: var(--color-parchment);
  color: var(--glossary-text);
  font-family: var(--font-body);
}

.glossary-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--nav-height) + 2.5rem) 1.5rem 6rem;
}

/* Active nav link */
.nav__link--active {
  color: var(--color-bronze) !important;
}

/* ============================================================
   INDEX PAGE
   ============================================================ */

.glossary-index__hero {
  text-align: center;
  padding: 3rem 0 4rem;
  border-bottom: 1px solid var(--glossary-rule);
  margin-bottom: 4rem;
}

.glossary-index__overline {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-bronze);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.glossary-index__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 1.5rem + 5vw, 6rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--color-navy-deep);
  line-height: 0.95;
}

.glossary-index__rule {
  width: 80px;
  height: 0;
  border: none;
  border-top: 2px solid var(--color-bronze);
  margin: 1.75rem auto;
  position: relative;
}
.glossary-index__rule::after {
  content: "";
  display: block;
  width: 80px;
  height: 0;
  border-top: 0.75px solid var(--color-bronze);
  position: absolute;
  top: 4px;
  left: 0;
}

.glossary-index__subtitle {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--glossary-muted);
  font-style: italic;
  line-height: 1.55;
  max-width: 52ch;
  margin: 0 auto;
}

.glossary-index__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.glossary-index__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 1.4rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--color-navy-deep);
  background: var(--color-navy-deep);
  color: var(--color-parchment);
  transition: var(--transition-interactive);
}
.glossary-index__cta:hover {
  background: var(--color-navy-mid);
  border-color: var(--color-navy-mid);
}
.glossary-index__cta--ghost {
  background: transparent;
  color: var(--color-navy-deep);
}
.glossary-index__cta--ghost:hover {
  background: var(--color-navy-deep);
  color: var(--color-parchment);
}

/* Index layout: sticky TOC sidebar + content */
.glossary-index__layout {
  display: grid;
  grid-template-columns: var(--glossary-rail-w) 1fr;
  gap: var(--glossary-gutter);
  align-items: start;
}

.glossary-index__toc {
  position: sticky;
  top: calc(var(--nav-height) + 2rem);
}

.glossary-toc__label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-bronze);
  font-weight: 500;
  margin-bottom: 0.9rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--glossary-rule);
}

.glossary-toc__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.glossary-toc__list li {
  margin: 0.15rem 0;
}

.glossary-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.5rem 0;
  font-size: 0.92rem;
  text-decoration: none;
  color: var(--glossary-text);
  font-weight: 400;
  transition: var(--transition-interactive);
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  margin-left: -0.75rem;
}

.glossary-toc__list a:hover {
  color: var(--color-bronze);
  border-left-color: var(--color-bronze);
}

.glossary-toc__roman {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--color-bronze);
  font-weight: 400;
  width: 1.5rem;
  flex-shrink: 0;
}

/* Group sections */
.glossary-index__group {
  margin-bottom: 5rem;
  scroll-margin-top: calc(var(--nav-height) + 1.5rem);
}

.glossary-index__group-header {
  margin-bottom: 2rem;
}

.glossary-index__group-overline {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-bronze);
  font-weight: 500;
  margin-bottom: 0.65rem;
}

.glossary-index__group-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 1.5rem + 2vw, 3.5rem);
  font-weight: 400;
  color: var(--color-navy-deep);
  letter-spacing: -0.005em;
  line-height: 1.05;
}

.glossary-index__group-rule {
  width: 56px;
  border: none;
  border-top: 2px solid var(--color-bronze);
  margin: 1.1rem 0 1.25rem;
}

.glossary-index__group-lede {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-style: italic;
  color: var(--glossary-muted);
  max-width: 56ch;
  line-height: 1.55;
}

.glossary-index__list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: glossary-item;
}

.glossary-index__item {
  border-top: 1px solid var(--glossary-rule);
  counter-increment: glossary-item;
}
.glossary-index__item:last-child {
  border-bottom: 1px solid var(--glossary-rule);
}

.glossary-index__link {
  display: grid;
  grid-template-columns: 2.25rem minmax(180px, 16rem) 1fr;
  gap: 1.25rem;
  align-items: baseline;
  padding: 1.15rem 0.5rem 1.15rem 0;
  text-decoration: none;
  color: var(--glossary-text);
  transition: var(--transition-interactive);
  position: relative;
}

.glossary-index__link::before {
  content: counter(glossary-item, decimal-leading-zero);
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--color-bronze);
  font-weight: 500;
  letter-spacing: 0.05em;
}

.glossary-index__link:hover {
  background: rgba(139, 115, 85, 0.04);
  padding-left: 0.6rem;
}

.glossary-index__term {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-navy-deep);
  line-height: 1.25;
}

.glossary-index__preview {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--glossary-muted);
  line-height: 1.5;
}

/* Colophon */
.glossary-index__colophon {
  margin-top: 5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--glossary-rule);
}
.glossary-index__colophon h2 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 400;
  color: var(--color-navy-deep);
  margin-bottom: 1.25rem;
  position: relative;
}
.glossary-index__colophon h2::after {
  content: "";
  display: block;
  width: 40px;
  border-top: 2px solid var(--color-bronze);
  margin-top: 0.75rem;
}
.glossary-index__colophon p {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--glossary-text);
  margin-bottom: 1rem;
  max-width: 65ch;
}

/* ============================================================
   TERM PAGE
   ============================================================ */

.glossary-term__layout {
  display: grid;
  grid-template-columns: var(--glossary-rail-w) 1fr;
  gap: var(--glossary-gutter);
  align-items: start;
}

/* Left rail — sticky in-page TOC */
.glossary-term__rail {
  position: sticky;
  top: calc(var(--nav-height) + 2rem);
}

.glossary-rail__back {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-bronze);
  text-decoration: none;
  font-weight: 500;
  margin-bottom: 1.25rem;
  transition: var(--transition-interactive);
}
.glossary-rail__back:hover { color: var(--color-bronze-dark); }

.glossary-rail__term {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--color-navy-deep);
  line-height: 1.25;
  margin-bottom: 0.9rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--glossary-rule);
}

.glossary-rail__toc {
  list-style: none;
  padding: 0;
  margin: 0;
}
.glossary-rail__toc li { margin: 0; }

.glossary-toc-link {
  display: block;
  padding: 0.55rem 0 0.55rem 0.85rem;
  font-size: 0.93rem;
  color: var(--glossary-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -2px;
  transition: var(--transition-interactive);
  font-weight: 400;
}
.glossary-toc-link:hover {
  color: var(--color-navy-deep);
  border-left-color: var(--color-bronze-light);
}
.glossary-toc-link.is-active {
  color: var(--color-navy-deep);
  font-weight: 500;
  border-left-color: var(--color-bronze);
}

/* Right column — editorial content */
.glossary-term__content {
  max-width: var(--glossary-measure);
  min-width: 0;  /* prevent overflow in grid */
}

.glossary-term__header {
  margin-bottom: 2.75rem;
}

.glossary-term__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 1.5rem + 3vw, 4rem);
  font-weight: 400;
  letter-spacing: -0.012em;
  color: var(--color-navy-deep);
  line-height: 1.02;
  text-wrap: balance;
}

/* Three-zone hairline — matches PDF: 1.4pt bronze, 0.5pt bronze, 2pt gap */
.glossary-term__rule {
  margin: 1.5rem 0 1.1rem;
}
.glossary-term__rule-line {
  display: block;
  width: 100%;
  background: var(--color-bronze);
}
.glossary-term__rule-line--thick {
  height: 1.6px;
}
.glossary-term__rule-line--thin {
  height: 0.6px;
  margin-top: 2.5px;
}

.glossary-term__breadcrumb {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-bronze);
  font-weight: 500;
  line-height: 1.5;
}

/* Sections */
.glossary-section {
  margin-bottom: 2.5rem;
  scroll-margin-top: calc(var(--nav-height) + 1.5rem);
}

.glossary-section__heading {
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-bronze);
  font-weight: 500;
  margin-bottom: 0.9rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--glossary-rule);
  width: fit-content;
  min-width: 100px;
}

/* Body type — serif for editorial body, matches the PDF */
.glossary-section p {
  font-family: 'Source Serif 4', 'DM Serif Display', Georgia, serif;
  font-size: 1.075rem;
  line-height: 1.66;
  color: var(--glossary-text);
  margin-bottom: 1.15rem;
  max-width: var(--glossary-measure);
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}
.glossary-section p:last-child { margin-bottom: 0; }

.glossary-section--definition p {
  font-size: 1.13rem;
  line-height: 1.6;
}

.glossary-section em {
  font-style: italic;
  font-family: inherit;
}
.glossary-section strong {
  font-weight: 600;
  color: var(--color-navy-deep);
}

/* Links — bronze, the brand-correct hyperlink color */
.glossary-section a,
.glossary-see-also a,
.glossary-references a,
.glossary-index__colophon a {
  color: var(--glossary-link);
  text-decoration: underline;
  text-decoration-color: rgba(139, 115, 85, 0.45);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: var(--transition-interactive);
}
.glossary-section a:hover,
.glossary-see-also a:hover,
.glossary-references a:hover,
.glossary-index__colophon a:hover {
  color: var(--glossary-link-hover);
  text-decoration-color: var(--color-bronze-dark);
}

/* Footnote markers */
.footnote-ref {
  font-size: 0.7em;
  vertical-align: super;
  line-height: 0;
}
.footnote-ref a {
  text-decoration: none;
  color: var(--color-bronze);
  font-weight: 600;
  padding: 0 0.05em;
}
.footnote-ref a:hover {
  color: var(--color-bronze-dark);
}
.footnote-ref a:target,
[id^="ref-"]:target {
  background: rgba(139, 115, 85, 0.12);
  outline: 2px solid rgba(139, 115, 85, 0.3);
  outline-offset: 2px;
}

/* See also */
.glossary-see-also {
  font-family: 'Source Serif 4', Georgia, serif;
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--glossary-text);
  text-align: left;
  max-width: var(--glossary-measure);
  /* Use word-spacing so the middle-dot separator breathes naturally */
  word-spacing: 0.05em;
}
.glossary-see-also a {
  white-space: nowrap;  /* keep multi-word term names together */
}

/* References */
.glossary-references {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: glossary-ref;
}
.glossary-references li {
  position: relative;
  padding-left: 2.25rem;
  margin-bottom: 0.85rem;
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--glossary-text);
  counter-increment: glossary-ref;
}
.glossary-references li::before {
  content: counter(glossary-ref) ".";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-bronze);
  width: 1.75rem;
  text-align: right;
}
.footnote-backlink {
  font-size: 0.85em;
  margin-right: 0.4em;
  text-decoration: none !important;
  color: var(--color-bronze-light) !important;
  opacity: 0.5;
  transition: var(--transition-interactive);
}
.footnote-backlink:hover {
  opacity: 1;
  color: var(--color-bronze) !important;
}

/* Pager */
.glossary-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--glossary-rule);
}
.glossary-pager__link {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--glossary-rule);
  text-decoration: none;
  background: transparent;
  transition: var(--transition-interactive);
  min-height: 4.5rem;
}
.glossary-pager__link:hover {
  border-color: var(--color-bronze);
  background: rgba(139, 115, 85, 0.04);
}
.glossary-pager__link--prev { text-align: left; }
.glossary-pager__link--next {
  text-align: right;
  grid-column: 2;
}
.glossary-pager__direction {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-bronze);
  font-weight: 500;
}
.glossary-pager__name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-navy-deep);
  line-height: 1.25;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  :root { --glossary-gutter: 32px; }

  .glossary-index__layout,
  .glossary-term__layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .glossary-index__toc,
  .glossary-term__rail {
    position: static;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--glossary-rule);
  }

  .glossary-index__link {
    grid-template-columns: 1.75rem 1fr;
    gap: 0.85rem;
  }
  .glossary-index__link .glossary-index__preview {
    grid-column: 2;
    margin-top: 0.3rem;
  }
  .glossary-index__link .glossary-index__term {
    grid-column: 2;
  }

  .glossary-section p {
    text-align: left;
    hyphens: manual;
  }

  .glossary-pager {
    grid-template-columns: 1fr;
  }
  .glossary-pager__link--next {
    grid-column: 1;
    text-align: left;
  }
}

@media (max-width: 600px) {
  .glossary-main {
    padding: calc(var(--nav-height) + 1.5rem) 1.1rem 4rem;
  }
  .glossary-index__hero { padding: 1.5rem 0 2.5rem; margin-bottom: 2.5rem; }
  .glossary-index__actions { flex-direction: column; align-items: stretch; }
  .glossary-index__cta { justify-content: center; }
}

/* Print: clean, no nav/footer, body only */
@media print {
  .nav, .footer, .glossary-term__rail, .glossary-index__toc,
  .glossary-pager, .glossary-index__actions, .glossary-rail__back {
    display: none !important;
  }
  .glossary-term__layout, .glossary-index__layout {
    grid-template-columns: 1fr;
  }
  .glossary-term__content {
    max-width: 100%;
  }
}

/* ============================================================
   BACK-TO-TOP — index page only
   ============================================================ */

.back-to-top {
  position: fixed;
  right: 1.75rem;
  bottom: 1.75rem;
  z-index: 900;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(15, 26, 48, 0.92);
  color: var(--color-parchment, #F8F6F3);
  border: 1px solid rgba(139, 115, 85, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 240ms ease-out,
              transform 240ms ease-out,
              background 200ms ease-out,
              border-color 200ms ease-out;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 14px rgba(15, 26, 48, 0.18);
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background: rgba(15, 26, 48, 1);
  border-color: rgba(139, 115, 85, 0.85);
  outline: none;
}

.back-to-top:focus-visible {
  box-shadow: 0 0 0 3px rgba(139, 115, 85, 0.35);
}

.back-to-top svg {
  width: 18px;
  height: 18px;
  display: block;
}

@media (max-width: 640px) {
  .back-to-top {
    right: 1rem;
    bottom: 1rem;
    width: 42px;
    height: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .back-to-top { transition: opacity 120ms linear; transform: none; }
  .back-to-top.is-visible { transform: none; }
}