/* ==============================================
   DECISION SOVEREIGNTY
   decisionsovereignty.com.au
   v1.1 — 9 April 2026
   Plain CSS. No framework. No animations.
   No color beyond black, white, and grey.
============================================== */

:root {
  --black: #000000;
  --white: #FFFFFF;
  --grey: #666666;
  --border: 1px solid #000000;
  --body-mobile: 17px;
  --body-desktop: 18px;
  --line-body: 1.6;
  --line-heading: 1.3;
  --max-outer: 800px;
  --max-text: 700px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--white);
  color: var(--black);
  font-family: Garamond, 'Times New Roman', serif;
  font-size: var(--body-mobile);
  line-height: var(--line-body);
}

@media (min-width: 768px) {
  body { font-size: var(--body-desktop); }
}

/* ---- NAV ---- */

nav {
  border-bottom: var(--border);
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 100;
}

.nav-inner {
  max-width: var(--max-outer);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.nav-inner a {
  color: var(--black);
  text-decoration: none;
  font-size: 15px;
}

.nav-inner a:hover {
  text-decoration: underline;
}

.nav-inner a[aria-current="page"] {
  font-weight: 600;
}

.nav-sep {
  color: var(--grey);
  padding: 0 10px;
  font-size: 14px;
  user-select: none;
}

/* ---- LAYOUT ---- */

.page-inner {
  max-width: var(--max-outer);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.text-block {
  max-width: var(--max-text);
}

/* ---- TYPOGRAPHY ---- */

h1.site-title {
  font-size: calc(var(--body-mobile) * 2.5);
  line-height: var(--line-heading);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  h1.site-title { font-size: calc(var(--body-desktop) * 2.5); }
}

.site-subtitle {
  font-size: calc(var(--body-mobile) * 1.4);
  font-style: italic;
  text-align: center;
  margin-bottom: 56px;
  line-height: var(--line-heading);
}

@media (min-width: 768px) {
  .site-subtitle { font-size: calc(var(--body-desktop) * 1.4); }
}

h1 {
  font-size: calc(var(--body-mobile) * 2.5);
  line-height: var(--line-heading);
  font-weight: 500;
  margin-bottom: 32px;
}

@media (min-width: 768px) {
  h1 { font-size: calc(var(--body-desktop) * 2.5); }
}

h2 {
  font-size: calc(var(--body-mobile) * 1.8);
  line-height: var(--line-heading);
  font-weight: 500;
  margin-top: 48px;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  h2 { font-size: calc(var(--body-desktop) * 1.8); }
}

h3 {
  font-size: calc(var(--body-mobile) * 1.4);
  line-height: var(--line-heading);
  font-weight: 500;
  margin-top: 32px;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  h3 { font-size: calc(var(--body-desktop) * 1.4); }
}

p {
  margin-bottom: 20px;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--black);
}

/* ---- OBSERVATIONS ---- */

.observations {
  list-style: none;
  margin: 24px 0 28px;
  border-top: var(--border);
}

.observations li {
  border-bottom: var(--border);
  padding: 16px 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: baseline;
}

.obs-number {
  font-size: 12px;
  color: var(--grey);
  letter-spacing: 0.06em;
  min-width: 24px;
}

.obs-title {
  font-weight: 600;
}

/* ---- PAGE LINKS ---- */

.page-links {
  list-style: none;
  margin: 48px 0 0;
  border-top: var(--border);
}

.page-links li {
  border-bottom: var(--border);
}

.page-links a {
  display: block;
  padding: 16px 0;
  color: var(--black);
  text-decoration: none;
  font-style: italic;
}

.page-links a:hover {
  text-decoration: underline;
}

/* ---- DEFINITION TERMS ---- */

.def-term {
  margin: 40px 0 0;
  border-top: var(--border);
  padding-top: 24px;
}

.def-term h3 {
  margin-top: 0;
}

/* ---- FIELD LIST ---- */

.field-list {
  list-style: none;
  margin: 16px 0 24px;
  border-top: var(--border);
}

.field-list li {
  border-bottom: var(--border);
  padding: 14px 0;
}

.field-list li strong {
  display: block;
  margin-bottom: 4px;
}

/* ---- MILESTONES TABLE ---- */

.milestones {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0 32px;
}

.milestones th,
.milestones td {
  border: var(--border);
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
}

.milestones th {
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
}

.milestones td:first-child {
  white-space: nowrap;
  color: var(--grey);
  font-size: 15px;
  min-width: 130px;
}

/* ---- LINEAGE LIST ---- */

.lineage-list {
  list-style: none;
  margin: 20px 0 32px;
  border-top: var(--border);
}

.lineage-list li {
  border-bottom: var(--border);
  padding: 14px 0;
}

/* ---- IMPLEMENTATION CARD ---- */

.impl-card {
  border: var(--border);
  margin: 24px 0 32px;
}

.impl-card-header {
  border-bottom: var(--border);
  padding: 14px 20px;
  font-weight: 600;
  letter-spacing: 0.04em;
  font-size: 16px;
}

.impl-table {
  width: 100%;
  border-collapse: collapse;
}

.impl-table tr + tr td,
.impl-table tr + tr th {
  border-top: var(--border);
}

.impl-table th,
.impl-table td {
  padding: 10px 20px;
  text-align: left;
  vertical-align: top;
}

.impl-table th {
  font-weight: 400;
  color: var(--grey);
  font-size: 14px;
  width: 220px;
  border-right: var(--border);
}

.impl-table td {
  font-size: 15px;
}

/* ---- CITATION BLOCKS ---- */

.citation-block {
  margin: 24px 0;
}

.citation-block h3 {
  font-size: 15px;
  letter-spacing: 0.03em;
  color: var(--grey);
  text-transform: uppercase;
  font-weight: 400;
  margin-top: 28px;
  margin-bottom: 10px;
  border-top: var(--border);
  padding-top: 16px;
}

.citation-text {
  border: var(--border);
  padding: 20px 24px;
  font-style: italic;
  line-height: 1.7;
  font-size: 16px;
}

.bibtex {
  font-family: 'Courier New', Courier, monospace;
  font-style: normal;
  font-size: 14px;
  line-height: 1.7;
  word-break: break-word;
}

/* ---- FOOTER ---- */

footer {
  border-top: 4px solid var(--black);
}

.footer-inner {
  max-width: var(--max-outer);
  margin: 0 auto;
  padding: 32px 24px;
  font-size: 14px;
  color: var(--grey);
  line-height: 1.7;
}

.footer-inner a {
  color: var(--grey);
  text-decoration: underline;
}