:root {
  --bg-0: #07161e;
  --bg-1: #0f2b3a;
  --card: #0d2230;
  --line: #2f5263;
  --text: #e8f4ff;
  --muted: #9fb9c8;
  --accent: #33d1b0;
  --accent-2: #ffd166;
  --code-bg: #041018;
  --code-line: #234150;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 10% -10%, #1d5169 0%, transparent 60%),
    radial-gradient(900px 450px at 100% 0%, #174f44 0%, transparent 58%),
    linear-gradient(160deg, var(--bg-0), var(--bg-1));
  min-height: 100vh;
}

a {
  color: #9ddcfb;
}

a:hover {
  color: #d3efff;
}

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

/* Nex landing page */
body.nex-landing .wrap {
  width: min(980px, 92vw);
  margin: 0 auto;
  padding: 56px 0 72px;
}

body.nex-landing .hero {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}

body.nex-landing .brand-logo {
  width: 66px;
  height: 66px;
  display: block;
}

body.nex-landing h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.8rem);
  letter-spacing: 0.02em;
  line-height: 1;
}

body.nex-landing .subtitle {
  margin: 14px 0 32px;
  max-width: 700px;
  font-size: 1.08rem;
  color: var(--muted);
  line-height: 1.6;
}

body.nex-landing .cta {
  display: inline-block;
  text-decoration: none;
  background: linear-gradient(90deg, var(--accent), #54e8c8);
  color: #052015;
  font-weight: 700;
  padding: 12px 18px;
  border-radius: 10px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 24px rgba(20, 98, 78, 0.35);
}

body.nex-landing .cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(20, 98, 78, 0.5);
  color: #052015;
}

body.nex-landing .meta {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.95rem;
}

body.nex-landing .grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

body.nex-landing .card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--card) 85%, transparent);
  padding: 18px;
  backdrop-filter: blur(4px);
}

body.nex-landing .card h2 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  color: var(--accent-2);
}

body.nex-landing .card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

body.nex-landing pre {
  margin: 26px 0 0;
  padding: 16px;
  border-radius: 12px;
  background: var(--code-bg);
  border: 1px solid var(--code-line);
  overflow-x: auto;
  font-size: 0.92rem;
  line-height: 1.45;
  color: #d4efff;
}

body.nex-landing .foot {
  margin-top: 34px;
  color: var(--muted);
  font-size: 0.95rem;
}

body.nex-landing .back {
  color: #9ddcfb;
  text-decoration: none;
}

body.nex-landing .back:hover {
  text-decoration: underline;
}

/* Nex tutorial page (pandoc output) */
body.nex-tutorial {
  margin: 0 auto;
  width: min(980px, 92vw);
  padding: 40px 0 64px;
  line-height: 1.65;
}

body.nex-tutorial h1,
body.nex-tutorial h2,
body.nex-tutorial h3,
body.nex-tutorial h4 {
  line-height: 1.2;
}

body.nex-tutorial h1 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  margin-bottom: 0.6rem;
}

body.nex-tutorial h2 {
  margin-top: 1.9rem;
  font-size: 1.45rem;
  color: #d7f5ea;
}

body.nex-tutorial p,
body.nex-tutorial li {
  color: var(--muted);
}

body.nex-tutorial #TOC,
body.nex-tutorial nav[role="doc-toc"] {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  background: color-mix(in srgb, var(--card) 85%, transparent);
  margin: 18px 0 26px;
}

body.nex-tutorial pre {
  background: var(--code-bg);
  color: #d4efff;
  border: 1px solid var(--code-line);
  border-radius: 10px;
  padding: 14px;
  overflow-x: auto;
}

body.nex-tutorial code {
  color: #def6ff;
}

body.nex-tutorial a {
  color: #9ddcfb;
}

@media (max-width: 720px) {
  body.nex-tutorial {
    width: 94vw;
    padding-top: 20px;
  }
}

/* nex-syntax accordion */
body.nex-syntax #TOC {
  margin-bottom: 18px;
}

body.nex-syntax .syntax-controls {
  display: flex;
  gap: 10px;
  margin: 10px 0 18px;
}

body.nex-syntax .syntax-btn {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--card) 82%, transparent);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  font-family: "Space Grotesk", sans-serif;
}

body.nex-syntax .syntax-btn:hover,
body.nex-syntax .syntax-btn:focus {
  background: color-mix(in srgb, var(--card) 65%, transparent);
}

body.nex-syntax details.syntax-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  margin: 12px 0;
  background: color-mix(in srgb, var(--card) 80%, transparent);
  overflow: hidden;
}

body.nex-syntax details.syntax-item[open] {
  box-shadow: 0 10px 24px rgba(3, 18, 27, 0.25);
}

body.nex-syntax details.syntax-item > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 700;
  color: var(--accent-2);
  background: color-mix(in srgb, var(--card) 88%, transparent);
}

body.nex-syntax details.syntax-item > summary::-webkit-details-marker {
  display: none;
}

body.nex-syntax details.syntax-item > summary::after {
  content: "+";
  float: right;
  color: var(--muted);
}

body.nex-syntax details.syntax-item[open] > summary::after {
  content: "-";
}

body.nex-syntax details.syntax-item p,
body.nex-syntax details.syntax-item pre,
body.nex-syntax details.syntax-item ul,
body.nex-syntax details.syntax-item ol {
  margin: 12px 16px;
}

body.nex-syntax details.syntax-item pre {
  margin-bottom: 16px;
}

@media (max-width: 720px) {
  body.nex-landing .hero {
    gap: 12px;
  }

  body.nex-landing .brand-logo {
    width: 54px;
    height: 54px;
  }
}