:root {
  --bg: #0b1021;
  --panel: #0f172a;
  --accent: #32d5ff;
  --accent-2: #ff7e67;
  --text: #e6edf3;
  --muted: #9fb2c8;
  --border: #1f2a3d;
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at 20% 20%, #11223f, #0b1021 45%), radial-gradient(circle at 80% 0%, #182743, #0b1021 40%), var(--bg);
  color: var(--text);
  line-height: 1.6;
  --header-offset: 0px;
}

body.has-ethicalads {
  --header-offset: 64px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }

.container {
  width: min(1100px, 90%);
  margin: 0 auto;
}

.ad-bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 16, 33, 0.95);
  border-bottom: 1px solid var(--border);
  min-height: 64px;
  display: flex;
  align-items: center;
}

.ad-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: var(--header-offset);
  backdrop-filter: blur(8px);
  background: rgba(11, 16, 33, 0.9);
  z-index: 10;
}

.header-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  padding: 18px 0;
  gap: 20px;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: white;
}

.tagline {
  margin: 4px 0 0;
  color: var(--muted);
}

.nav {
  display: flex;
  gap: 14px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav a {
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid transparent;
}

.nav a:hover {
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.hero {
  padding: 70px 0 50px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 10px;
}

h1, h2, h3, h4 {
  margin: 10px 0;
  line-height: 1.2;
}

.lead {
  font-size: 18px;
  color: #d7e4f4;
  max-width: 780px;
}

.cta-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 12px;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #0b1021;
  font-weight: 700;
  box-shadow: var(--shadow);
}

.button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  padding: 10px 0 50px;
}

.card {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 18px 22px;
  box-shadow: var(--shadow);
}

.checks {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
}

.checks li::before {
  content: "✓";
  color: var(--accent);
  margin-right: 8px;
}

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

.post-list li {
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.post-list.spaced li {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

.page-header {
  padding: 40px 0 10px;
}

.post {
  padding: 40px 0;
}

.post .content {
  margin-top: 24px;
}

.ad {
  margin: 26px 0;
  padding: 14px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.ad-in-article {
  text-align: center;
}

.post .content p {
  margin: 14px 0;
}

.post .content code {
  background: rgba(255, 255, 255, 0.04);
  padding: 2px 6px;
  border-radius: 6px;
}

.back-link {
  margin-top: 32px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  margin-top: 40px;
  color: var(--muted);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

code {
  font-family: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 5px;
  border-radius: 6px;
}

.related-posts {
  margin-top: 3rem;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255,255,255,0.03);
}

.related-posts h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--accent);
}

.related-posts ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.related-posts ul a {
  color: var(--text);
  text-decoration: none;
}

.related-posts ul a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.playground-cta {
  margin-top: 2.5rem;
  padding: 1.5rem 1.75rem;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(50, 213, 255, 0.07), rgba(255, 126, 103, 0.05));
  border: 1px solid rgba(50, 213, 255, 0.18);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.playground-cta__eyebrow {
  margin: 0 0 0.3rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.playground-cta__headline {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.playground-cta__sub {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
  max-width: 480px;
}

.playground-cta .button {
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Reference pages ───────────────────────────────────────────── */

.ref-meta {
  display: flex;
  gap: 8px;
  margin: 10px 0 16px;
  flex-wrap: wrap;
}

.ref-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: rgba(50, 213, 255, 0.12);
  color: var(--accent);
  border: 1px solid rgba(50, 213, 255, 0.25);
}

.ref-badge--cat {
  background: rgba(255, 126, 103, 0.12);
  color: var(--accent-2);
  border-color: rgba(255, 126, 103, 0.25);
}

.ref-badge--sm {
  font-size: 10px;
  padding: 1px 7px;
}

.ref-syntax {
  margin: 20px 0;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.ref-syntax-label {
  display: block;
  padding: 6px 14px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

.ref-syntax pre {
  margin: 0;
  padding: 14px;
  overflow-x: auto;
}

.ref-syntax pre code {
  background: none;
  padding: 0;
  font-size: 13px;
  color: var(--accent);
}

.ref-try {
  margin: 32px 0 24px;
}

.ref-index-list {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ref-index-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 8px;
  flex-wrap: wrap;
}

.ref-index-list li:hover {
  background: rgba(255, 255, 255, 0.03);
}

.ref-index-list a {
  font-weight: 600;
  font-family: monospace;
  font-size: 14px;
  min-width: 200px;
}

.ref-section {
  margin: 32px 0;
}

.ref-section h2 {
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-bottom: 16px;
}

.post.ref-page .content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}

.post.ref-page .content th,
.post.ref-page .content td {
  padding: 8px 12px;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.post.ref-page .content th {
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Article + ad sidebar layout ───────────────────────────────── */

.article-layout {
  display: grid;
  grid-template-columns: 1fr 160px;
  gap: 48px;
  align-items: start;
}

.article-layout--no-ad {
  grid-template-columns: 1fr;
}

.article-sidebar {
  position: sticky;
  top: 90px;
  padding-top: 40px;
}

/* ── Media queries ─────────────────────────────────────────────── */

@media (max-width: 860px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
}

@media (max-width: 720px) {
  .header-grid { grid-template-columns: 1fr; }
  .nav { flex-wrap: wrap; }
  .post-list li { flex-direction: column; align-items: flex-start; }
  .ref-index-list a { min-width: unset; }
}