/* zook site — hand-written CSS, no framework */

/* ── tokens ─────────────────────────────────────────── */
:root {
  --fg:       #0f1117;
  --muted:    #6b7280;
  --subtle:   #9ca3af;
  --bg:       #fafafa;
  --accent:   #00c896;
  --accent-dk:#00a07a;
  --code-bg:  #111827;
  --code-fg:  #e2e8f0;
  --border:   #e2e8f0;
  --border-dk:#d1d5db;
  --maxw:     1080px;
  --r:        6px;
}

/* ── reset ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}
body { min-height: 100dvh; display: flex; flex-direction: column; }
img, svg { display: block; max-width: 100%; }
a { color: var(--accent-dk); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ── typography ──────────────────────────────────────── */
code, pre, kbd, samp {
  font-family: ui-monospace, "SFMono-Regular", Menlo, "Cascadia Code", monospace;
}

/* inline code (light bg, used in prose) */
code {
  background: #f0f4f8;
  color: #1a2740;
  padding: .1em .35em;
  border-radius: 4px;
  font-size: .88em;
}

/* ── code blocks (signature dark terminal look) ──────── */
pre {
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 1.25rem 1.5rem;
  border-radius: var(--r);
  overflow-x: auto;
  font-size: .875rem;
  line-height: 1.7;
  border: 1px solid #1f2937;
}
pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
  border-radius: 0;
}

/* comment spans inside pre (used in landing quickstart) */
pre .c-comment { color: #6b7280; }

/* ── nav ─────────────────────────────────────────────── */
/* The header tag IS the sticky bar — full viewport width, constrained by padding */
.topnav {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  /* center content within 1080px by clamping side padding */
  padding: .875rem max(1.5rem, calc((100% - var(--maxw)) / 2 + 1.5rem));
  gap: 1rem;
}

/* brand is the word "zook" — shown in monospace, it's a CLI name */
.brand {
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -.02em;
  color: var(--fg);
  text-decoration: none;
}
.brand:hover { text-decoration: none; color: var(--accent-dk); }

.topnav nav { display: flex; gap: .25rem; align-items: center; flex-wrap: wrap; }
.topnav nav a {
  color: var(--muted);
  font-size: .9rem;
  padding: .3rem .6rem;
  border-radius: 4px;
  transition: color .15s, background .15s;
}
.topnav nav a:hover {
  color: var(--fg);
  background: var(--border);
  text-decoration: none;
}

/* ── main / page wrapper ─────────────────────────────── */
main { flex: 1; }

.section-landing { /* no extra padding — hero handles it */ }
.section-docs { }
.section-page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

/* ── landing: hero ───────────────────────────────────── */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

/* left column: eyebrow, headline, tagline, CTA held as one grid child */
.hero-inner { min-width: 0; }

.hero-eyebrow {
  font-family: ui-monospace, monospace;
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent-dk);
  margin-bottom: .75rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.03em;
  color: var(--fg);
  margin-bottom: 1.25rem;
}

.hero .tagline {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 34rem;
  margin-bottom: 2rem;
}
.hero .tagline em { font-style: normal; color: var(--fg); font-weight: 500; }

.cta { display: flex; gap: .75rem; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: .65rem 1.35rem;
  border: 1px solid var(--border-dk);
  border-radius: var(--r);
  font-size: .95rem;
  font-weight: 500;
  color: var(--fg);
  background: var(--bg);
  cursor: pointer;
  transition: border-color .15s, background .15s;
  text-decoration: none;
}
.btn:hover { border-color: var(--muted); background: #f3f4f6; text-decoration: none; }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn.primary:hover { background: var(--accent-dk); border-color: var(--accent-dk); }

/* terminal widget in the hero */
.hero-terminal {
  background: var(--code-bg);
  border-radius: 10px;
  border: 1px solid #1f2937;
  overflow: hidden;
  font-size: .85rem;
  box-shadow: 0 8px 40px rgba(0,0,0,.18), 0 2px 8px rgba(0,0,0,.12);
}
.terminal-bar {
  display: flex;
  gap: 6px;
  align-items: center;
  padding: .7rem 1rem;
  background: #1a2233;
  border-bottom: 1px solid #1f2937;
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-r { background: #ff5f56; }
.dot-y { background: #ffbd2e; }
.dot-g { background: #27c93f; }
.terminal-body {
  padding: 1.25rem 1.5rem;
  margin: 0;
  background: none;
  border: none;
  border-radius: 0;
  color: var(--code-fg);
  line-height: 1.8;
  font-size: .85rem;
  white-space: pre;
}

/* spans used in the terminal widget */
.t-dim    { color: #4b5563; }
.t-ok     { color: var(--accent); font-weight: 600; }
.t-label  { color: #9ca3af; letter-spacing: .04em; font-size: .8em; }
.t-cursor { color: var(--accent); animation: blink 1.1s step-end infinite; }

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── landing: features ───────────────────────────────── */
.features {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 3rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
  border-top: 1px solid var(--border);
}

.feature {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: #fff;
}
.feature h3 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -.01em;
  margin-bottom: .6rem;
  color: var(--fg);
}
.feature p {
  font-size: .93rem;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}
.feature p code {
  font-size: .85em;
}

/* ── landing: story ──────────────────────────────────── */
.story {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 3rem 1.5rem;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
  align-items: start;
}

.story h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -.025em;
  color: var(--fg);
  line-height: 1.2;
}

.story-text { }
.story-text p {
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 1rem;
}
.story-text p:last-child { margin-bottom: 0; }
.story-text strong { color: var(--fg); font-weight: 600; }

/* ── landing: quickstart ─────────────────────────────── */
.quickstart {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  border-top: 1px solid var(--border);
}
.quickstart h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: 1.25rem;
}
.quickstart pre { margin-bottom: 1.25rem; }
.quickstart p { font-size: .95rem; }
.quickstart a { font-weight: 500; }

/* ── docs layout ─────────────────────────────────────── */
.section-docs > .docs-layout {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 3rem;
  align-items: start;
  min-height: calc(100vh - 4rem);
}

.sidebar {
  padding-top: 2.5rem;
  padding-bottom: 2rem;
}
.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: .1rem;
  position: sticky;
  top: calc(1rem + 53px); /* topnav height approx */
}
.sidebar nav a {
  display: block;
  padding: .38rem .65rem;
  border-radius: 5px;
  color: var(--muted);
  font-size: .9rem;
  text-decoration: none;
  transition: color .12s, background .12s;
}
.sidebar nav a:hover { color: var(--fg); background: #f0f4f8; text-decoration: none; }
.sidebar nav a.active {
  background: #f0f4f8;
  color: var(--fg);
  font-weight: 600;
}

.doc-body {
  padding: 2.5rem 0;
  min-width: 0; /* prevent grid blowout */
}

/* ── page body (install, changelog) ─────────────────── */
/* .section-page provides the outer max-width + padding; .page-body just caps prose width */
.page-body {
  max-width: 720px;
  min-width: 0;
}

/* ── rendered-markdown typography ────────────────────── */
.doc-body h1, .page-body h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 1.5rem;
  color: var(--fg);
  line-height: 1.15;
}
.doc-body h2, .page-body h2 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-top: 2.5rem;
  margin-bottom: .75rem;
  color: var(--fg);
}
.doc-body h3, .page-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -.01em;
  margin-top: 1.75rem;
  margin-bottom: .5rem;
  color: var(--fg);
}
.doc-body h4, .page-body h4 {
  font-size: .95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  margin-top: 1.5rem;
  margin-bottom: .4rem;
}
.doc-body p, .page-body p {
  margin-bottom: 1rem;
  line-height: 1.7;
}
.doc-body ul, .page-body ul,
.doc-body ol, .page-body ol {
  margin: .5rem 0 1rem 1.25rem;
  line-height: 1.7;
}
.doc-body li, .page-body li { margin-bottom: .3rem; }
.doc-body strong, .page-body strong { font-weight: 600; color: var(--fg); }
.doc-body em, .page-body em { font-style: italic; }
.doc-body hr, .page-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}
.doc-body blockquote, .page-body blockquote {
  border-left: 3px solid var(--accent);
  padding: .5rem 0 .5rem 1rem;
  color: var(--muted);
  margin: 1.25rem 0;
}

/* tables */
.doc-body table, .page-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.25rem 0;
  font-size: .9rem;
}
.doc-body th, .page-body th {
  border: 1px solid var(--border);
  padding: .5rem .8rem;
  text-align: left;
  font-weight: 600;
  background: #f8fafc;
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
}
.doc-body td, .page-body td {
  border: 1px solid var(--border);
  padding: .5rem .8rem;
  text-align: left;
  vertical-align: top;
}
.doc-body tr:nth-child(even) td, .page-body tr:nth-child(even) td {
  background: #fafbfc;
}

/* code in doc/page prose */
.doc-body code, .page-body code { font-size: .85em; }
.doc-body pre, .page-body pre { margin: 1.25rem 0; }

/* ── footer ──────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: auto;
}
.site-footer p {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.5rem;
  font-size: .85rem;
  color: var(--subtle);
  font-family: ui-monospace, monospace;
}

/* ── responsive ──────────────────────────────────────── */
@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 2.5rem 1.25rem 2rem;
    gap: 2rem;
  }
  .hero h1 { font-size: clamp(2rem, 8vw, 2.8rem); }
  .hero-terminal { display: none; } /* collapse terminal on small screens */

  .story {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 2rem 1.25rem;
  }

  .features {
    padding: 2rem 1.25rem;
    grid-template-columns: 1fr;
  }

  .quickstart { padding: 2rem 1.25rem 3rem; }
}

@media (max-width: 720px) {
  .section-docs > .docs-layout {
    grid-template-columns: 1fr;
    padding: 0 1rem;
    gap: 0;
  }
  .sidebar {
    padding-top: 1.25rem;
    padding-bottom: .5rem;
  }
  .sidebar nav {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: .25rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
    margin-bottom: .5rem;
  }
  .sidebar nav a { font-size: .82rem; padding: .3rem .55rem; }
  .doc-body { padding: 1.5rem 0; }

  .topnav { padding: .75rem 1rem; }
  .topnav nav a { padding: .25rem .45rem; font-size: .85rem; }

  .section-page { padding: 1.75rem 1rem; }
  .page-body { padding: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .t-cursor { animation: none; }
  * { transition-duration: .01ms !important; }
}