@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap");

:root {
  --bg-deep: #1a0e3a;
  --bg-mid: #2d1b4e;
  --accent: #6c63ff;
  --accent-hover: #9c94ff;
  --text: #f5f3ff;
  --text-muted: #b8b0d8;
  --surface: rgba(255, 255, 255, 0.08);
  --surface-border: rgba(255, 255, 255, 0.14);
  --code-bg: rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Poppins", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: radial-gradient(1200px 800px at 80% -10%, rgba(108, 99, 255, 0.35), transparent),
    radial-gradient(900px 600px at -10% 60%, rgba(156, 147, 255, 0.2), transparent),
    linear-gradient(165deg, var(--bg-deep) 0%, var(--bg-mid) 45%, #120826 100%);
  background-attachment: fixed;
}

a {
  color: var(--accent-hover);
  text-decoration: none;
  font-weight: 500;
}

a:hover {
  color: #fff;
  text-decoration: underline;
}

code {
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-size: 0.9em;
  background: var(--code-bg);
  padding: 0.15em 0.45em;
  border-radius: 6px;
  border: 1px solid var(--surface-border);
}

/* ——— Top nav (document pages) ——— */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  padding: 0.9rem 1.25rem;
  background: rgba(26, 14, 58, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--surface-border);
}

.site-nav__brand {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--text);
}

.site-nav__brand:hover {
  text-decoration: none;
  color: var(--accent-hover);
}

.site-nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  font-size: 0.88rem;
}

.site-nav__links a {
  color: var(--text-muted);
  font-weight: 500;
}

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

/* ——— Document shell ——— */
.doc-shell {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.doc-panel {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 20px;
  padding: 2rem 1.75rem;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.25);
}

.doc-shell h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 4vw, 1.85rem);
  font-weight: 700;
  line-height: 1.25;
}

.doc-shell h2 {
  margin: 1.75rem 0 0.65rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
}

.doc-shell p,
.doc-shell li {
  color: var(--text-muted);
  margin: 0.65rem 0;
}

.doc-shell ul,
.doc-shell ol {
  padding-left: 1.25rem;
}

.doc-shell li {
  margin: 0.4rem 0;
}

.muted {
  font-size: 0.9rem;
  color: var(--text-muted);
  opacity: 0.95;
}

.doc-cross {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--surface-border);
  font-size: 0.9rem;
}

.site-footer {
  text-align: center;
  padding: 2rem 1rem 2.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

/* ——— Home / hub ——— */
.home-wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.home-hero {
  text-align: center;
  margin-bottom: 2.5rem;
}

.home-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-hover);
  background: rgba(108, 99, 255, 0.2);
  border: 1px solid rgba(108, 99, 255, 0.45);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.home-hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 700;
}

.home-hero p {
  margin: 0 auto;
  max-width: 28rem;
  color: var(--text-muted);
  font-size: 1rem;
}

.cards {
  display: grid;
  gap: 1rem;
}

@media (min-width: 540px) {
  .cards {
    grid-template-columns: 1fr 1fr;
  }

  .cards .card--wide {
    grid-column: 1 / -1;
  }
}

.card-link {
  display: block;
  padding: 1.35rem 1.5rem;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  color: inherit;
  text-decoration: none;
}

.card-link:hover {
  transform: translateY(-3px);
  border-color: rgba(156, 147, 255, 0.45);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  text-decoration: none;
}

.card-link__icon {
  font-size: 1.75rem;
  line-height: 1;
  margin-bottom: 0.65rem;
}

.card-link__title {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  margin: 0 0 0.35rem;
}

.card-link__desc {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 400;
}