/* =========================================================================
   Geospatial Compliance — Cozy Neutrals theme
   Palette: parchment, warm stone, silvered lavender, moss, terracotta.
   ========================================================================= */

:root {
  /* Base palette */
  --parchment:        #f4ede3;
  --parchment-soft:   #faf5ec;
  --parchment-deep:   #ebe1ce;
  --stone:            #d8cdb8;
  --stone-deep:       #b8aa92;
  --lavender:         #cdbce4;
  --lavender-deep:    #7a6f96;
  --lavender-ink:     #4a4063;
  --moss:             #5a8f6b;
  --moss-soft:        #cfe0d2;
  --terracotta:       #d98b6f;
  --terracotta-soft:  #f4d6c8;
  --ink:              #322e3d;
  --ink-soft:         #5e5870;
  --code-bg:          #f7f1e6;
  --code-bg-deep:     #efe7d6;
  --shadow:           0 10px 30px rgba(74, 64, 99, 0.10);
  --shadow-sm:        0 2px 10px rgba(74, 64, 99, 0.08);

  --radius:           14px;
  --radius-sm:        9px;
  --radius-lg:        22px;

  --header-h:         72px;
  --content-max:      1400px;
  --reading-max:      78ch;

  --font-sans: "Inter", "Helvetica Neue", Arial, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Source Serif Pro", "Georgia", "Cambria", serif;
  --font-mono: "JetBrains Mono", "Fira Code", "SFMono-Regular", Menlo, Consolas, monospace;
}

@media (min-width: 1100px) {
  :root { --header-h: 80px; }
}

/* ---------- Reset & base typography ---------- */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--parchment);
  background-image:
    radial-gradient(1100px 600px at 90% -10%, rgba(205, 188, 228, 0.35), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(217, 139, 111, 0.18), transparent 65%);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main.site-main { flex: 1 0 auto; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--lavender-ink);
  line-height: 1.25;
  margin-top: 1.6em;
  margin-bottom: 0.55em;
  letter-spacing: -0.005em;
}
h1 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3rem); margin-top: 0; }
h2 { font-size: clamp(1.55rem, 1.2rem + 1.4vw, 2.1rem); }
h3 { font-size: clamp(1.2rem, 1.05rem + 0.75vw, 1.45rem); }
h4 { font-size: 1.1rem; color: var(--lavender-deep); }

p { margin: 0 0 1.05em; }
strong { color: var(--lavender-ink); }
em { color: var(--ink-soft); }

a {
  color: var(--lavender-deep);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 95%;
  transition: color 0.2s ease, background-size 0.25s ease;
}
a:hover, a:focus-visible {
  color: var(--terracotta);
  background-size: 0% 1px;
}
:focus-visible {
  outline: 2px solid var(--lavender-deep);
  outline-offset: 3px;
  border-radius: 4px;
}

/* In-page anchor offset for sticky header */
:is(h1, h2, h3, h4, h5, h6)[id] {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.heading-anchor {
  margin-left: 0.4em;
  font-weight: 400;
  color: var(--lavender);
  opacity: 0;
  transition: opacity 0.2s ease, color 0.2s ease;
  background: none;
}
:is(h2, h3, h4):hover .heading-anchor { opacity: 1; }
.heading-anchor:hover { color: var(--terracotta); }

.skip-link {
  position: absolute;
  top: -40px;
  left: 1rem;
  background: var(--lavender-deep);
  color: var(--parchment);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
}
.skip-link:focus { top: 1rem; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 237, 227, 0.88);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--parchment-deep);
}
.site-header__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 12px clamp(16px, 3vw, 32px);
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  background: none;
  font-weight: 600;
  margin-right: auto;
}
.brand:hover, .brand:focus-visible { color: var(--lavender-deep); }
.brand__mark { width: 42px; height: 42px; display: inline-flex; }
.brand__mark .logo { width: 100%; height: 100%; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--lavender-ink);
  font-size: 1.1rem;
}
.brand__tag {
  font-size: 0.78rem;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}

.primary-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
  align-items: center;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--ink);
  background: none;
  transition: background 0.2s, color 0.2s, transform 0.2s;
}
.nav-link:hover, .nav-link:focus-visible {
  background: var(--parchment-deep);
  color: var(--lavender-ink);
  transform: translateY(-1px);
}
.nav-link.is-active {
  background: linear-gradient(135deg, var(--lavender), var(--lavender-deep));
  color: var(--parchment);
}
.nav-link.is-active .nav-icon path { fill: var(--parchment); }
.nav-icon {
  width: 20px;
  height: 20px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid var(--parchment-deep);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 10px 9px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--lavender-ink);
  border-radius: 2px;
  margin: 3px 0;
  transition: transform 0.25s, opacity 0.25s;
}

@media (max-width: 880px) {
  .brand__tag { display: none; }
  .nav-toggle { display: block; }
  .primary-nav {
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--parchment-soft);
    border-bottom: 1px solid var(--parchment-deep);
    box-shadow: var(--shadow-sm);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .primary-nav.is-open { max-height: 360px; }
  .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    padding: 8px 12px 16px;
  }
  .nav-link { padding: 12px 14px; }
}

/* ---------- Footer ---------- */

.site-footer {
  margin-top: 80px;
  background: linear-gradient(180deg, var(--parchment) 0%, var(--parchment-deep) 100%);
  border-top: 1px solid var(--parchment-deep);
  color: var(--ink);
}
.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 48px clamp(16px, 3vw, 32px) 16px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
}
.site-footer__brand { display: flex; gap: 14px; align-items: flex-start; }
.site-footer__brand .brand__mark { width: 48px; height: 48px; }
.site-footer__name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.15rem;
  margin: 0 0 4px;
  color: var(--lavender-ink);
}
.site-footer__tag {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}
.site-footer__heading {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--lavender-ink);
  margin: 0 0 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.site-footer__nav ul {
  list-style: none;
  padding: 0; margin: 0;
  display: grid;
  gap: 6px;
}
.site-footer__base {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 12px clamp(16px, 3vw, 32px) 32px;
  color: var(--ink-soft);
}

@media (max-width: 720px) {
  .site-footer__inner { grid-template-columns: 1fr; }
}

/* ---------- Hero / Homepage ---------- */

.hero {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(40px, 6vw, 80px) clamp(16px, 3vw, 32px) clamp(28px, 4vw, 56px);
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--lavender);
  color: var(--lavender-ink);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 1.6rem + 3vw, 3.6rem);
  line-height: 1.08;
  margin: 18px 0 14px;
  color: var(--lavender-ink);
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(110deg, var(--terracotta), var(--lavender-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lede {
  font-size: 1.12rem;
  color: var(--ink-soft);
  margin-bottom: 1.2em;
}
.hero__art {
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--lavender), var(--terracotta-soft) 70%, var(--moss-soft));
  aspect-ratio: 5/4;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.hero__art svg { width: 90%; height: 90%; }
.hero__art::after {
  content: "";
  position: absolute;
  inset: -40% -10% auto auto;
  width: 70%;
  aspect-ratio: 1;
  background: radial-gradient(closest-side, rgba(244, 237, 227, 0.6), transparent 70%);
  pointer-events: none;
}

@media (max-width: 880px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__art { order: -1; max-width: 420px; margin: 0 auto; }
}

.cta-grid {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 8px clamp(16px, 3vw, 32px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.cta-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px;
  border-radius: var(--radius);
  background: var(--parchment-soft);
  border: 1px solid var(--parchment-deep);
  box-shadow: var(--shadow-sm);
  color: inherit;
  position: relative;
  overflow: hidden;
  background-image: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.cta-card:hover, .cta-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--lavender);
  color: inherit;
}
.cta-card__icon {
  display: inline-flex;
  width: 52px;
  height: 52px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(140deg, var(--lavender) 0%, var(--terracotta-soft) 100%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.6);
}
.cta-card__icon svg { width: 28px; height: 28px; }
.cta-card[data-icon="engine"] .cta-card__icon { background: linear-gradient(140deg, var(--moss-soft), var(--lavender)); }
.cta-card[data-icon="chart"] .cta-card__icon { background: linear-gradient(140deg, var(--terracotta-soft), var(--lavender)); }
.cta-card h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--lavender-ink);
}
.cta-card p { color: var(--ink-soft); margin: 0; }
.cta-card__arrow {
  margin-top: 6px;
  font-weight: 600;
  color: var(--terracotta);
}

.home-section {
  max-width: var(--content-max);
  margin: 56px auto;
  padding: 0 clamp(16px, 3vw, 32px);
}
.home-section h2 {
  font-size: 1.7rem;
  margin-bottom: 8px;
}
.home-section__lede {
  color: var(--ink-soft);
  max-width: 70ch;
  margin-bottom: 1.5em;
}

.subarticle-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
}
.subarticle-list a {
  display: block;
  padding: 14px 16px;
  background: var(--parchment-soft);
  border: 1px solid var(--parchment-deep);
  border-radius: var(--radius-sm);
  color: var(--ink);
  background-image: none;
  font-weight: 500;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.subarticle-list a:hover, .subarticle-list a:focus-visible {
  background: #fff;
  border-color: var(--lavender);
  color: var(--lavender-ink);
  transform: translateY(-2px);
}

/* ---------- Content / Article ---------- */

.content {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 24px clamp(16px, 3vw, 32px) 48px;
}
.content__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}
@media (min-width: 1100px) {
  .content__layout {
    grid-template-columns: minmax(0, 1fr) 280px;
  }
}
.content__main {
  /* Every block — prose, code, tables, diagrams — fills the column. The
     surrounding layout grid already caps the column to a comfortable
     desktop width; on narrow viewports it goes edge-to-edge. */
  font-size: 1.04rem;
}

.content__aside {
  position: sticky;
  top: calc(var(--header-h) + 16px);
  align-self: start;
  background: var(--parchment-soft);
  border: 1px solid var(--parchment-deep);
  border-radius: var(--radius);
  padding: 20px 22px;
  font-size: 0.95rem;
  box-shadow: var(--shadow-sm);
}
.content__aside-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  margin: 0 0 12px;
  color: var(--lavender-ink);
  letter-spacing: 0.02em;
}
.related-links {
  list-style: none;
  padding: 0; margin: 0;
  display: grid;
  gap: 8px;
}
.related-links a {
  display: block;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background-image: none;
  color: var(--ink);
  transition: background 0.2s, color 0.2s;
}
.related-links a:hover, .related-links a:focus-visible {
  background: var(--parchment-deep);
  color: var(--lavender-ink);
}
.related-back {
  margin: 14px 0 0;
  font-size: 0.9rem;
}

/* Breadcrumbs */
.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  padding: 0;
  margin: 0 0 20px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.breadcrumbs li + li::before {
  content: "›";
  margin-right: 10px;
  color: var(--stone-deep);
}
.breadcrumbs a { background-image: none; }
.breadcrumbs [aria-current="page"] {
  color: var(--lavender-ink);
  font-weight: 500;
}

/* Lists in content */
.content__main ul, .content__main ol {
  padding-left: 1.4em;
}
.content__main ul li, .content__main ol li {
  margin: 0.35em 0;
}

/* Task-list checkboxes (rendered by markdown-it-task-lists) */
.content__main ul li.task-list-item,
.content__main ol li.task-list-item {
  list-style: none;
  padding-left: 0;
  margin-left: -1.4em;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.task-list-item input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 5px;
  border: 1.5px solid var(--stone-deep);
  background: var(--parchment-soft);
  cursor: pointer;
  flex: 0 0 auto;
  margin-top: 0.18em;
  position: relative;
  transition: background 0.18s, border-color 0.18s;
}
.task-list-item input[type="checkbox"]:hover {
  border-color: var(--lavender-deep);
}
.task-list-item input[type="checkbox"]:checked {
  background: linear-gradient(135deg, var(--lavender), var(--lavender-deep));
  border-color: var(--lavender-deep);
}
.task-list-item input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 5px; top: 1px;
  width: 6px; height: 11px;
  border: solid var(--parchment);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.task-list-item.is-checked > label,
.task-list-item input[type="checkbox"]:checked + label {
  text-decoration: line-through;
  color: var(--ink-soft);
}

/* Inline code (light, no border, blends with text) */
:not(pre) > code {
  background: var(--code-bg);
  color: var(--lavender-ink);
  padding: 0.1em 0.42em;
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 0.92em;
  border: none;
  white-space: break-spaces;
}

/* Code blocks with copy button */
.code-block {
  position: relative;
  margin: 1.4em 0;
  border-radius: var(--radius);
  background: var(--code-bg);
  border: 1px solid var(--parchment-deep);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.code-block::before {
  content: attr(data-lang);
  position: absolute;
  top: 8px;
  left: 14px;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  text-transform: uppercase;
}
.code-block pre {
  margin: 0;
  padding: 32px 18px 18px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.55;
  background: transparent;
  color: var(--ink);
  tab-size: 2;
}
.code-block code {
  background: transparent;
  padding: 0;
  border: 0;
  color: inherit;
  font-family: inherit;
  font-size: inherit;
}
.code-copy {
  position: absolute;
  top: 6px;
  right: 8px;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--parchment-deep);
  background: var(--parchment-soft);
  color: var(--lavender-ink);
  cursor: pointer;
  transition: background 0.18s, color 0.18s, transform 0.18s;
}
.code-copy:hover, .code-copy:focus-visible {
  background: var(--lavender);
  color: var(--parchment);
  transform: translateY(-1px);
}
.code-copy.is-success { background: var(--moss); color: var(--parchment); border-color: var(--moss); }

/* Tables */
.table-scroll {
  overflow-x: auto;
  margin: 1.4em 0;
  border-radius: var(--radius);
  border: 1px solid var(--parchment-deep);
  box-shadow: var(--shadow-sm);
  background: var(--parchment-soft);
}
.table-scroll table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 540px;
}
.table-scroll th, .table-scroll td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--parchment-deep);
  vertical-align: top;
}
.table-scroll th {
  background: linear-gradient(180deg, var(--lavender) 0%, #b9a8d3 100%);
  color: var(--parchment);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-bottom: 0;
}
.table-scroll tr:nth-child(even) td { background: var(--parchment); }
.table-scroll tr:last-child td { border-bottom: 0; }
.table-scroll code { background: rgba(122, 111, 150, 0.10); }

/* Blockquotes */
blockquote {
  margin: 1.2em 0;
  padding: 12px 18px;
  border-left: 4px solid var(--lavender);
  background: var(--parchment-soft);
  color: var(--ink-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* Mermaid diagrams */
.mermaid {
  margin: 1.6em 0;
  padding: 22px 16px;
  background: var(--parchment-soft);
  border: 1px solid var(--parchment-deep);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  text-align: center;
  overflow-x: auto;
}
.mermaid svg { max-width: 100%; height: auto; }

/* FAQ accordions (built from <details> after rendering) */
details.faq {
  margin: 10px 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--parchment-deep);
  background: var(--parchment-soft);
  overflow: hidden;
  transition: box-shadow 0.2s, border-color 0.2s;
}
details.faq[open] {
  box-shadow: var(--shadow-sm);
  border-color: var(--lavender);
}
details.faq > summary {
  cursor: pointer;
  padding: 14px 48px 14px 18px;
  font-weight: 600;
  font-family: var(--font-serif);
  color: var(--lavender-ink);
  position: relative;
  list-style: none;
}
details.faq > summary::-webkit-details-marker { display: none; }
details.faq > summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-weight: 400;
  font-size: 1.4rem;
  color: var(--lavender-deep);
  transition: transform 0.2s;
}
details.faq[open] > summary::after { content: "−"; }
details.faq > .faq-body {
  padding: 4px 18px 16px;
  color: var(--ink-soft);
}
details.faq > .faq-body :last-child { margin-bottom: 0; }

/* Cards: pillar landing */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin: 28px 0 12px;
}

/* Misc */
hr {
  border: 0;
  height: 1px;
  background: var(--parchment-deep);
  margin: 2em 0;
}
img { max-width: 100%; height: auto; border-radius: var(--radius-sm); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}