:root {
  --bg: #04090f;
  --bg-soft: #08131d;
  --panel: rgba(5, 11, 17, 0.84);
  --panel-strong: rgba(8, 17, 27, 0.95);
  --line: rgba(140, 195, 170, 0.14);
  --text: #e8f3ee;
  --muted: #92a9a0;
  --accent: #97f0a9;
  --accent-2: #ffcc66;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.48);
}

:root[data-theme="light"] {
  --bg: #f5fbf7;
  --bg-soft: #ebf6ef;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.95);
  --line: rgba(36, 86, 64, 0.2);
  --text: #113025;
  --muted: #456557;
  --accent: #1f8e53;
  --accent-2: #9a6000;
  --shadow: 0 20px 50px rgba(17, 48, 37, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(151, 240, 169, 0.08), transparent 30%),
    radial-gradient(circle at right 20%, rgba(255, 204, 102, 0.07), transparent 24%),
    linear-gradient(180deg, #03070d 0%, #06111a 45%, #03070d 100%);
}

:root[data-theme="light"] body {
  background:
    radial-gradient(circle at top left, rgba(31, 142, 83, 0.08), transparent 25%),
    radial-gradient(circle at right 20%, rgba(154, 96, 0, 0.08), transparent 25%),
    linear-gradient(180deg, #f6fbf8 0%, #edf6f0 50%, #f7fcf9 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 88%);
}

.page-shell {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.topbar,
.hero-card,
.card,
.table-card,
.timeline-item,
.doc-layout .content-box,
.doc-layout .toc-box,
.search-shell,
.meta-bar,
.footer {
  backdrop-filter: blur(18px);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(6, 12, 20, 0.74);
}

.brand,
h1,
h2,
h3,
strong {
  letter-spacing: -0.03em;
}

.brand {
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.nav-links a,
.button,
.chip,
.copy-btn,
.search-results a {
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
  transform: translateY(-1px);
}

.theme-btn {
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  min-height: 36px;
  padding: 0 12px;
  font-weight: 700;
  cursor: pointer;
}

.hero {
  padding-top: 8px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 24px;
  align-items: center;
  padding: 44px 0 22px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.8rem);
  line-height: 0.98;
  max-width: 13ch;
}

.lede {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-actions,
.meta-row,
.quick-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid var(--line);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), #cdfcc8);
  color: #071016;
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.button:hover,
.button:focus-visible,
.chip:hover,
.chip:focus-visible {
  transform: translateY(-2px);
}

.chip {
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.88rem;
}

.hero-card,
.card,
.table-card,
.timeline-item,
.search-shell,
.meta-bar,
.doc-layout .content-box,
.doc-layout .toc-box,
.footer {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 22px;
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent),
    var(--panel-strong);
}

.stat + .stat {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.84rem;
  margin-bottom: 6px;
}

main {
  display: grid;
  gap: 18px;
}

.section {
  padding: 18px 0 10px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
}

.cards {
  display: grid;
  gap: 18px;
}

.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.two-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.table-card,
.search-shell,
.meta-bar,
.footer {
  padding: 22px;
  border-radius: 24px;
}

.card p,
td,
th,
.footer p,
.footer a,
.meta-badge {
  color: var(--muted);
  line-height: 1.7;
}

h3 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.15rem;
}

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

th,
td {
  text-align: left;
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
}

th {
  color: var(--text);
  font-size: 0.95rem;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.table-scroll {
  overflow-x: auto;
}

pre,
code {
  font-family: "JetBrains Mono", monospace;
}

code {
  color: var(--accent-2);
}

pre {
  position: relative;
  overflow-x: auto;
  padding: 16px;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.24);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  border: 1px solid var(--line);
  background: rgba(9, 19, 26, 0.9);
  color: var(--text);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.75rem;
  cursor: pointer;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.timeline-item {
  padding: 16px;
  border-radius: 18px;
  color: var(--muted);
}

.search-shell {
  margin-top: 10px;
}

.search-shell input {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font: inherit;
}

.search-results {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.search-results li {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
}

.search-results a {
  display: flex;
  flex-direction: column;
  gap: 3px;
  text-decoration: none;
  padding: 10px 12px;
}

.search-results a strong {
  color: var(--text);
}

.search-results a span {
  color: var(--muted);
  font-size: 0.9rem;
}

.search-results a:hover {
  transform: translateY(-1px);
}

.meta-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.meta-badge {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
}

.breadcrumbs {
  margin: 8px 0 14px;
  color: var(--muted);
  font-size: 0.9rem;
}

.breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--text);
}

.doc-layout {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 18px;
}

.content-box,
.toc-box,
.doc-layout .content-box,
.doc-layout .toc-box {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  border-radius: 24px;
  padding: 22px;
}

.content-box h4 {
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.2rem;
  margin-bottom: 0.8rem;
}

.doc-layout .content-box,
.doc-layout .toc-box {
  position: relative;
}

.doc-layout .content-box h4 {
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.2rem;
  margin-bottom: 0.8rem;
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.toc-list a {
  color: var(--muted);
  text-decoration: none;
}

.toc-list a:hover {
  color: var(--text);
}

.toc-sub {
  padding-left: 14px;
  font-size: 0.92rem;
}

.related-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.related-list a {
  text-decoration: none;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 10px;
  display: block;
}

.related-list a:hover {
  color: var(--text);
}

.footer {
  margin-top: 16px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
}

.footer a:hover {
  color: var(--text);
}

@media (max-width: 900px) {
  .hero-grid,
  .three-up,
  .two-up,
  .timeline,
  .doc-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
  }

  .theme-btn {
    align-self: flex-start;
  }

  h1 {
    max-width: 12ch;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-copy,
  .hero-card,
  .card,
  .table-card,
  .timeline-item,
  .doc-layout .content-box,
  .doc-layout .toc-box {
    animation: rise 700ms ease both;
  }

  .hero-card {
    animation-delay: 90ms;
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}