/*
 * Vibe Codex — public site stylesheet.
 *
 * Shared by index.html and every articles/*.html page so the visitor
 * never crosses an aesthetic seam. Hand-tuned editorial-phosphor: warm
 * graphite ground, Fraunces serif for display, JetBrains Mono for
 * technical text, one accent (phosphor green) reserved for active and
 * "this matters" moments.
 *
 * No build step, no framework. Everything inlined for speed-of-paint;
 * crawlers and humans hit the same surface.
 */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700;9..144,900&family=JetBrains+Mono:wght@400;500;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg-deep:    #0a0a0e;
  --bg-warm:    #15151a;
  --bg-panel:   #1c1c22;
  --hairline:   rgba(255,255,255,0.08);
  --hairline-2: rgba(255,255,255,0.18);
  --ink:        #f6f6f4;
  --ink-2:      rgba(246,246,244,0.78);
  --ink-dim:    rgba(246,246,244,0.55);
  --ink-muted:  rgba(246,246,244,0.38);
  --accent:     #7eff9c;
  --accent-2:   #7eb8ff;
  --accent-soft: rgba(126,255,156,0.14);

  --display: "Fraunces", "Newsreader", Georgia, serif;
  --body:    "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono:    "JetBrains Mono", "SF Mono", ui-monospace, monospace;

  --max-w: 1180px;
  --max-w-prose: 720px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg-deep);
  background-image:
    radial-gradient(1400px 800px at 50% -200px, rgba(126,255,156,0.07), transparent 60%),
    radial-gradient(900px 600px at 100% 50%, rgba(126,184,255,0.05), transparent 60%),
    linear-gradient(180deg, var(--bg-warm) 0%, var(--bg-deep) 50%, var(--bg-deep) 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Graph-paper grid that fades into the body. Subtle — only visible
   against the gradient. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right,  rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.7), rgba(0,0,0,0));
}

/* Noise overlay — breaks gradient banding, makes the page read like a
   plate rather than a wallpaper. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.7'/></svg>");
}

.wrap { position: relative; z-index: 1; }

/* ============ Nav ============ */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px clamp(20px, 5vw, 48px);
  max-width: var(--max-w);
  margin: 0 auto;
}
.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
}
.nav__brand img { height: 28px; width: auto; opacity: 0.95; }
.nav__brand .slash {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  border-left: 1px solid var(--hairline-2);
  padding-left: 12px;
}
.nav__links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav__links a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-decoration: none;
  transition: color 160ms ease;
}
.nav__links a:hover { color: var(--ink); }
.nav__cta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 10px 18px;
  border: 1px solid var(--accent);
  border-radius: 2px;
  color: var(--accent);
  text-decoration: none;
  background: transparent;
  transition: background 160ms ease;
}
.nav__cta:hover { background: var(--accent-soft); }

/* ============ Hero ============ */
.hero {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px clamp(20px, 5vw, 48px) 100px;
  text-align: center;
}
.hero .eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(54px, 9vw, 140px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  margin: 0 auto 24px;
  max-width: 14ch;
  color: var(--ink);
}
.hero h1 em {
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(120deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero .lede {
  font-family: var(--body);
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 580px;
  margin: 0 auto 40px;
}
.hero__cta {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 28px;
  background: var(--accent);
  color: #0a0a0e;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 2px;
  border: 1px solid var(--accent);
  transition: transform 160ms ease, box-shadow 160ms ease;
  box-shadow: 0 0 0 0 var(--accent-soft);
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -8px rgba(126,255,156,0.45);
}
.btn--ghost {
  background: transparent;
  color: var(--accent);
}
.btn--ghost:hover {
  background: var(--accent-soft);
  box-shadow: none;
}
.brew {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-dim);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--hairline);
  padding: 12px 18px;
  border-radius: 2px;
  user-select: all;
}
.brew code {
  color: var(--ink);
  font-family: inherit;
}
.brew .copy {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--ink-muted);
  text-transform: uppercase;
  margin-left: 8px;
  cursor: pointer;
}

/* Phosphor aura behind the hero */
.hero__aura {
  position: absolute;
  top: -100px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(closest-side, rgba(126,255,156,0.12), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: -1;
  animation: aura-breath 6s ease-in-out infinite;
}
@keyframes aura-breath {
  0%, 100% { opacity: 0.55; }
  50%      { opacity: 1; }
}

/* ============ Features ============ */
.section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px clamp(20px, 5vw, 48px);
}
.section__eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section__title {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 60px;
  max-width: 18ch;
}
.section__title em {
  font-style: italic;
  color: var(--accent);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0;
  border-top: 1px solid var(--hairline);
}
.feature {
  padding: 36px 32px;
  border-bottom: 1px solid var(--hairline);
  border-right: 1px solid var(--hairline);
}
.feature:nth-child(3n) { border-right: none; }
@media (max-width: 880px) {
  .feature { border-right: none !important; }
}
.feature__num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 12px;
}
.feature h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.2;
  margin: 0 0 12px;
  color: var(--ink);
}
.feature p {
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-dim);
  margin: 0;
}

/* ============ Install steps ============ */
.install {
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  background: rgba(0,0,0,0.18);
}
.install__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 80px clamp(20px, 5vw, 48px);
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 80px;
  align-items: start;
}
@media (max-width: 880px) {
  .install__inner { grid-template-columns: 1fr; gap: 40px; }
}
.install__intro h2 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 36px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.install__intro p {
  color: var(--ink-dim);
  font-size: 15px;
  margin: 0;
}
.steps { display: flex; flex-direction: column; gap: 32px; }
.step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 24px;
}
.step__num {
  font-family: var(--display);
  font-weight: 500;
  font-size: 48px;
  font-style: italic;
  color: var(--accent);
  line-height: 1;
}
.step__body h4 {
  font-family: var(--display);
  font-size: 20px;
  margin: 0 0 8px;
  color: var(--ink);
  font-weight: 500;
}
.step__body p {
  color: var(--ink-dim);
  font-size: 15px;
  margin: 0 0 16px;
}
.code-block {
  background: var(--bg-panel);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink);
  padding: 14px 18px;
  overflow-x: auto;
}
.code-block .prompt { color: var(--accent); user-select: none; margin-right: 8px; }

/* ============ Articles grid ============ */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}
.article-card {
  background: var(--bg-deep);
  padding: 28px 26px;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 200ms ease;
}
.article-card:hover { background: var(--bg-panel); }
.article-card__tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
}
.article-card h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 21px;
  line-height: 1.2;
  margin: 0;
  letter-spacing: -0.01em;
}
.article-card p {
  font-size: 14px;
  color: var(--ink-dim);
  margin: 0;
}
.article-card__arrow {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  margin-top: auto;
  letter-spacing: 0.18em;
}

/* ============ Footer ============ */
.footer {
  border-top: 1px solid var(--hairline);
  margin-top: 80px;
  padding: 56px clamp(20px, 5vw, 48px);
}
.footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 32px;
}
.footer__brand img { height: 24px; opacity: 0.7; }
.footer__nav {
  display: flex;
  gap: 28px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.footer__nav a { color: var(--ink-dim); text-decoration: none; }
.footer__nav a:hover { color: var(--ink); }
.footer__meta {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--ink-muted);
  text-transform: uppercase;
}

/* ============ Article reading view ============ */
.article {
  max-width: var(--max-w-prose);
  margin: 0 auto;
  padding: 60px clamp(20px, 5vw, 32px) 100px;
}
.article__crumbs {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 16px;
}
.article__crumbs a { color: var(--ink-dim); text-decoration: none; }
.article__crumbs a:hover { color: var(--accent); }
.article h1 {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(36px, 5vw, 60px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}
.article .lede {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: 22px;
  line-height: 1.45;
  color: var(--ink-2);
  margin: 0 0 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--hairline);
}
.article h2 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 30px;
  line-height: 1.2;
  margin: 48px 0 16px;
  letter-spacing: -0.01em;
}
.article h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 22px;
  margin: 32px 0 12px;
}
.article p {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0 0 20px;
}
.article ul, .article ol {
  font-size: 17px;
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0 0 24px;
  padding-left: 1.4em;
}
.article li { margin-bottom: 10px; }
.article code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-panel);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  padding: 2px 6px;
  color: var(--accent);
}
.article pre {
  font-family: var(--mono);
  font-size: 14px;
  background: var(--bg-panel);
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--accent);
  border-radius: 2px;
  padding: 18px 22px;
  overflow-x: auto;
  line-height: 1.5;
  margin: 0 0 28px;
  color: var(--ink);
}
.article pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
  font-size: 14px;
}
.article a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(126,255,156,0.3);
  transition: border-color 160ms ease;
}
.article a:hover { border-color: var(--accent); }
.article blockquote {
  margin: 28px 0;
  padding: 4px 0 4px 24px;
  border-left: 2px solid var(--accent);
  color: var(--ink-2);
  font-style: italic;
}
.article__cta {
  margin-top: 56px;
  padding: 28px;
  border: 1px solid var(--accent-soft);
  background: rgba(126,255,156,0.04);
  border-radius: 2px;
  text-align: center;
}
.article__cta h3 {
  margin: 0 0 12px;
  font-family: var(--display);
  font-size: 24px;
  font-weight: 500;
}
.article__cta p { margin: 0 0 20px; color: var(--ink-dim); font-size: 15px; }

@media (prefers-reduced-motion: reduce) {
  .hero__aura { animation: none; opacity: 0.7; }
  html { scroll-behavior: auto; }
}