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

/* ─── Variables ─────────────────────────────────────────────────────── */
:root {
  --orange: #F48120;
  --orange-dim: #f481201a;
  --ink: #1a1a18;
  --ink-mid: #555550;
  --ink-faint: #99998f;
  --paper: #fafaf7;
  --rule: #e8e8e0;
  --sidebar-w: 220px;
  --content-max: 680px;
  --font-body: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", monospace;
}

/* ─── Base ──────────────────────────────────────────────────────────── */
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.65;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
}

/* ─── Header ────────────────────────────────────────────────────────── */
header {
  grid-column: 1;
  grid-row: 1 / -1;
  border-right: 1px solid var(--rule);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.site-title {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--orange);
  text-decoration: none;
  line-height: 1.3;
}
.site-title:hover { opacity: 0.8; }

/* ─── Sidebar Nav ───────────────────────────────────────────────────── */
nav {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

nav a {
  font-size: 0.875rem;
  color: var(--ink-mid);
  text-decoration: none;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  transition: background 0.1s, color 0.1s;
}
nav a:hover { color: var(--ink); background: var(--orange-dim); }
nav a.active { color: var(--orange); font-weight: 600; }

nav a.coming-soon {
  color: var(--ink-faint);
  font-size: 0.82rem;
}
nav a.coming-soon:hover {
  color: var(--ink-mid);
  background: transparent;
}
nav a.coming-soon::after {
  content: " ·";
}

.nav-section {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 1rem;
  padding: 0 0.5rem;
}

/* ─── Main Content ──────────────────────────────────────────────────── */
main {
  grid-column: 2;
  grid-row: 1 / -1;
  padding: 3.5rem 4rem;
  max-width: calc(var(--content-max) + 8rem);
}

article {
  max-width: var(--content-max);
}

.loading {
  color: var(--ink-faint);
  font-size: 0.875rem;
}

/* ─── Typography ────────────────────────────────────────────────────── */
article h1 {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: 0.75rem;
}

article h2 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-top: 3rem;
  margin-bottom: 0.75rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
}

article h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin-top: 1.5rem;
  margin-bottom: 0.4rem;
}

article p {
  margin-bottom: 1.1rem;
  color: var(--ink);
  font-size: 1rem;
}

article > p:first-of-type {
  font-size: 1.125rem;
  color: var(--ink-mid);
  line-height: 1.6;
  margin-bottom: 2rem;
}

article a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid var(--orange-dim);
  transition: border-color 0.15s;
}
article a:hover { border-bottom-color: var(--orange); }

article ul, article ol {
  margin: 0 0 1.1rem 1.25rem;
}
article li {
  margin-bottom: 0.4rem;
  font-size: 1rem;
}
article li strong { color: var(--ink); }

article hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 2.5rem 0;
}

article strong { font-weight: 600; }

article code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--rule);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: var(--ink);
}

article pre {
  background: #1e1e1c;
  color: #d4d4c8;
  padding: 1.25rem 1.5rem;
  border-radius: 6px;
  overflow-x: auto;
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
}
article pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* Pull-quote style for blockquotes */
article blockquote {
  border-left: 3px solid var(--orange);
  margin: 2rem 0;
  padding: 0.75rem 1.25rem;
  background: var(--orange-dim);
  border-radius: 0 4px 4px 0;
}
article blockquote p {
  color: var(--ink-mid);
  font-style: italic;
  margin: 0;
}

/* ─── Home page product grid ────────────────────────────────────────── */
article ul.products {
  list-style: none;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}
article ul.products li {
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  background: white;
  transition: border-color 0.15s;
}
article ul.products li:hover { border-color: var(--orange); }

/* ─── Responsive ────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  body {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
  header {
    grid-column: 1;
    grid-row: 1;
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--rule);
    padding: 1.25rem 1.5rem;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
  }
  nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.25rem;
  }
  .nav-section { display: none; }
  nav a.coming-soon { display: none; }
  main {
    grid-column: 1;
    grid-row: 2;
    padding: 2rem 1.5rem;
  }
}