/* SSL · Yeezy editorial · v6 release · 2026-05-09
   Palette: BONE (#efe9dd) / INK (#0a0a0c) / KLEIN (#1d3fff) / GOLD (#fbbf24)
   Type:    Space Grotesk display · Newsreader prose · JetBrains Mono labels
   Reference: bluewaveai.online landing — same palette + typographic system  */

:root {
  --bone:        #efe9dd;
  --bone-dim:    #c4bfb3;
  --ink:         #0a0a0c;
  --ink-soft:    #14141a;
  --klein:       #1d3fff;
  --klein-tint:  rgba(29, 63, 255, 0.08);
  --klein-line:  rgba(29, 63, 255, 0.22);
  --gold:        #fbbf24;
  --rule:        rgba(239, 233, 221, 0.12);
  --muted:       rgba(239, 233, 221, 0.55);
  --muted-2:     rgba(239, 233, 221, 0.40);
  --display:     "Space Grotesk", -apple-system, "Helvetica Neue", sans-serif;
  --serif:       "Newsreader", Georgia, "Times New Roman", serif;
  --mono:        "JetBrains Mono", "SF Mono", "Menlo", monospace;
}

* { box-sizing: border-box; }

html {
  background: var(--ink);
  color: var(--bone);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.65;
  color: var(--bone);
  background: var(--ink);
}

/* ─── masthead ──────────────────────────────────────────────── */

.masthead {
  border-bottom: 1px solid var(--rule);
  padding: 28px 0 22px;
  position: sticky;
  top: 0;
  background: rgba(10, 10, 12, 0.92);
  backdrop-filter: blur(12px);
  z-index: 100;
}

.masthead-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.brand-stamp {
  display: flex;
  align-items: baseline;
  gap: 14px;
  text-decoration: none;
  color: var(--bone);
  flex-wrap: wrap;
}

.brand-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--klein);
  font-weight: 600;
}

.brand-name {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.brand-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.masthead-nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.eyebrow-link {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--bone-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.eyebrow-link:hover { color: var(--klein); border-bottom-color: var(--klein); }

/* ─── content / prose ──────────────────────────────────────── */

.content {
  max-width: 760px;
  margin: 0 auto;
  padding: 80px 32px 96px;
}

.prose h1 {
  font-family: var(--display);
  font-size: 56px;
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 700;
  color: var(--bone);
  margin: 0 0 32px;
}

.prose h2 {
  font-family: var(--display);
  font-size: 30px;
  line-height: 1.18;
  letter-spacing: -0.015em;
  font-weight: 600;
  color: var(--bone);
  margin: 64px 0 18px;
  padding-top: 36px;
  border-top: 1px solid var(--rule);
}
.prose h2:first-child,
.prose h2:nth-of-type(1) { border-top: none; padding-top: 0; }

.prose h3 {
  font-family: var(--display);
  font-size: 20px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--bone);
  margin: 36px 0 12px;
}

.prose h4 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--klein);
  margin: 28px 0 10px;
}

.prose p {
  margin: 0 0 18px;
  color: var(--bone);
}

.prose p strong { color: var(--bone); font-weight: 600; }

.prose blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  border-left: 2px solid var(--klein);
  background: var(--klein-tint);
  font-style: italic;
  color: var(--bone);
  font-size: 17px;
}
.prose blockquote p:last-child { margin-bottom: 0; }

.prose hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 48px 0;
  height: 0;
}

.prose a {
  color: var(--klein);
  text-decoration: none;
  border-bottom: 1px solid var(--klein-line);
  transition: border-color 0.15s ease;
}
.prose a:hover { border-bottom-color: var(--klein); }

.prose ul, .prose ol {
  margin: 0 0 22px;
  padding-left: 22px;
  color: var(--bone);
}
.prose li { margin-bottom: 6px; }
.prose li::marker { color: var(--klein); }

.prose strong { color: var(--bone); font-weight: 600; }
.prose em { font-style: italic; color: var(--bone); }

/* ─── code ──────────────────────────────────────────────────── */

.prose code {
  font-family: var(--mono);
  font-size: 14px;
  background: rgba(239, 233, 221, 0.06);
  color: var(--gold);
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid var(--rule);
}

.prose pre {
  background: var(--ink-soft);
  border: 1px solid var(--rule);
  border-left: 2px solid var(--klein);
  padding: 22px 24px;
  margin: 24px 0;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.65;
}
.prose pre code {
  background: transparent;
  border: none;
  color: var(--bone);
  padding: 0;
  font-size: inherit;
  display: block;
}

/* Rouge syntax highlight tones — calibrated for Yeezy palette */
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kr, .highlight .kt { color: var(--klein); }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sc, .highlight .sd, .highlight .se, .highlight .sh, .highlight .si, .highlight .sx, .highlight .sr, .highlight .ss { color: var(--gold); }
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cp, .highlight .cs { color: var(--muted); font-style: italic; }
.highlight .nf, .highlight .nc { color: #a78bfa; }
.highlight .o, .highlight .ow { color: var(--bone-dim); }
.highlight .mi, .highlight .mf, .highlight .mh, .highlight .mo { color: #34d399; }
.highlight .nv, .highlight .vi, .highlight .vc { color: var(--bone); }

/* ─── tables ────────────────────────────────────────────────── */

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14.5px;
  font-family: var(--display);
}
.prose th {
  text-align: left;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--klein);
  padding: 12px 14px;
  border-bottom: 1px solid var(--klein-line);
  background: var(--klein-tint);
}
.prose td {
  padding: 14px;
  border-bottom: 1px solid var(--rule);
  color: var(--bone);
  vertical-align: top;
}

/* ─── footer ───────────────────────────────────────────────── */

.footer {
  border-top: 1px solid var(--rule);
  padding: 56px 0 80px;
  background: var(--ink);
}
.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  flex-wrap: wrap;
}
.footer-stamp { display: flex; align-items: baseline; gap: 12px; }
.footer-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--klein);
  font-weight: 600;
}
.footer-name {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 700;
  color: var(--bone);
}
.footer-meta {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-align: right;
  line-height: 1.7;
}
.footer-meta p { margin: 0 0 6px; }
.footer-meta a { color: var(--klein); text-decoration: none; border-bottom: 1px solid var(--klein-line); }

/* ─── responsive ──────────────────────────────────────────── */

@media (max-width: 720px) {
  .content { padding: 56px 24px 72px; }
  .prose h1 { font-size: 38px; }
  .prose h2 { font-size: 24px; margin-top: 48px; padding-top: 28px; }
  .prose h3 { font-size: 18px; }
  .masthead { padding: 18px 0 14px; }
  .masthead-inner { padding: 0 24px; gap: 16px; }
  .brand-meta { display: none; }
  .masthead-nav { gap: 14px; }
  .eyebrow-link { font-size: 10px; letter-spacing: 0.14em; }
  .footer-inner { flex-direction: column; gap: 24px; padding: 0 24px; }
  .footer-meta { text-align: left; }
  .prose pre { padding: 16px 18px; font-size: 12.5px; }
  .prose blockquote { padding: 16px 18px; font-size: 16px; }
}