@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #06060b;
  --surface: rgba(255,255,255,0.04);
  --border: rgba(255,255,255,0.08);
  --fg: #ffffff;
  --muted: rgba(255,255,255,0.45);
  --dim: rgba(255,255,255,0.18);
  --accent: #ffffff;
  --accent-soft: rgba(255,255,255,0.06);
}

html, body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── BACKGROUND ── */
.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.18;
}
.bg-orb-1 {
  width: 600px; height: 600px;
  top: -200px; left: -150px;
  background: radial-gradient(circle, #1a1a1a, transparent 70%);
}
.bg-orb-2 {
  width: 500px; height: 500px;
  bottom: -150px; right: -100px;
  background: radial-gradient(circle, #0d0d0d, transparent 70%);
}
.bg-grain {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  opacity: 0.4;
}

/* ── LAYOUT ── */
.wrapper {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}

/* ── NAV ── */
.top-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 56px;
}
.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.nav-logo span { color: var(--muted); }
.nav-sep {
  color: var(--dim);
  font-size: 16px;
}
.nav-page {
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
}

/* ── HEADER ── */
.doc-header {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.doc-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 20px;
}
.doc-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.1;
  color: var(--fg);
  margin-bottom: 12px;
}
.doc-meta {
  font-size: 12.5px;
  color: var(--dim);
}

/* ── SECTIONS ── */
.doc-section {
  margin-bottom: 36px;
}
.section-num {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--muted);
  margin-bottom: 8px;
}
.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 17px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 10px;
}
.section-body {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

/* ── DIVIDER ── */
.doc-divider {
  height: 1px;
  background: var(--border);
  margin: 40px 0;
}

/* ── FOOTER ── */
.doc-footer {
  margin-top: 60px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.doc-footer-copy {
  font-size: 12px;
  color: var(--dim);
}
.doc-footer-links {
  display: flex;
  gap: 20px;
}
.doc-footer-links a {
  font-size: 12px;
  color: var(--dim);
  text-decoration: none;
  transition: color 0.2s;
}
.doc-footer-links a:hover { color: var(--muted); }

/* ── BACK LINK ── */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 40px;
  transition: color 0.2s;
}
.back-btn:hover { color: var(--fg); }
.back-btn svg { width: 14px; height: 14px; }

@media (max-width: 600px) {
  .wrapper { padding: 36px 18px 60px; }
  .doc-title { font-size: 28px; }
  .top-nav { margin-bottom: 36px; }
}