/* ============================================================
   Qnnovation Library — shared chrome + listing styles
   Matches the design tokens in the site's index.html.
   Edit this ONE file to restyle every library page at once.
   ============================================================ */

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

:root {
  --bg: #f5f2ec; --bg2: #edeae3; --card: #edeae3; --card2: #e4e0d8;
  --ink: #0f0e0c; --muted: #7a7570; --rule: #d4cfc7;
  --accent: #c8401a; --dark: #0f0e0c;
  --mono: 'DM Mono', monospace;
  --serif: 'DM Serif Display', serif;
  --sans: 'Instrument Sans', sans-serif;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; }

/* ---------- NAV (injected by library.js) ---------- */
.qn-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 48px; height: 68px;
  background: rgba(245,242,236,.95);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
}
.qn-nav-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.qn-nav-logo img { height: 34px; width: 34px; object-fit: contain; }
.qn-nav-logo-text {
  font-family: var(--mono); font-size: 13px; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink);
}
.qn-nav-logo-text span { color: var(--accent); }
.qn-nav-links { display: flex; gap: 32px; list-style: none; align-items: center; }
.qn-nav-links a {
  font-size: 12px; font-weight: 500; letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted);
  text-decoration: none; transition: color .2s;
}
.qn-nav-links a:hover { color: var(--accent); }
.qn-nav-links a.current { color: var(--ink); }
.qn-nav-cta {
  background: var(--accent) !important; color: #f5f2ec !important;
  padding: 9px 22px; font-size: 12px !important; font-weight: 600 !important;
  transition: opacity .2s, transform .15s !important;
}
.qn-nav-cta:hover { opacity: .85; transform: translateY(-1px); }

/* ---------- PAGE SHELL ---------- */
.qn-wrap { max-width: 1080px; margin: 0 auto; padding: 0 48px; }

.qn-head { padding: 160px 0 64px; }
.qn-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: .2em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 24px;
}
.qn-title {
  font-family: var(--serif); font-size: clamp(40px, 6vw, 68px);
  line-height: 1.06; max-width: 760px; margin-bottom: 24px; font-weight: 400;
}
.qn-sub { font-size: 18px; color: var(--muted); max-width: 620px; }

hr.qn-rule { border: none; border-top: 1px solid var(--rule); margin: 0; }

/* ---------- POST LIST ---------- */
.qn-list { padding: 8px 0 96px; }

.qn-item {
  display: grid; grid-template-columns: 180px 1fr;
  gap: 40px; padding: 44px 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none; color: inherit;
  transition: opacity .2s;
}
.qn-item:hover { opacity: .72; }
.qn-item:hover .qn-item-title { color: var(--accent); }

.qn-item-meta { padding-top: 6px; }
.qn-item-kind {
  font-family: var(--mono); font-size: 11px; letter-spacing: .16em;
  text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 8px;
}
.qn-item-date {
  font-family: var(--mono); font-size: 11px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted); display: block;
}
.qn-item-title {
  font-family: var(--serif); font-size: clamp(26px, 3vw, 34px);
  line-height: 1.15; font-weight: 400; margin-bottom: 14px;
  transition: color .2s;
}
.qn-item-summary { color: var(--muted); font-size: 16px; max-width: 620px; margin-bottom: 16px; }
.qn-item-foot {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted);
  display: flex; gap: 20px; flex-wrap: wrap;
}
.qn-item-foot .read { color: var(--accent); }

.qn-empty {
  padding: 64px 0 120px; color: var(--muted);
  font-family: var(--mono); font-size: 13px; letter-spacing: .08em;
}

/* ---------- FOOTER (injected by library.js) ---------- */
.qn-footer { background: var(--dark); color: #f5f2ec; padding: 72px 48px 32px; }
.qn-footer-inner { max-width: 1080px; margin: 0 auto; }
.qn-footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(245,242,236,.14);
}
.qn-footer-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-bottom: 18px; }
.qn-footer-logo img { height: 32px; width: 32px; object-fit: contain; }
.qn-footer-logo-text {
  font-family: var(--mono); font-size: 13px; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase; color: #f5f2ec;
}
.qn-footer-logo-text span { color: var(--accent); }
.qn-footer-tagline { color: rgba(245,242,236,.6); font-size: 14px; max-width: 340px; }
.qn-footer h4 {
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: .16em; text-transform: uppercase;
  color: rgba(245,242,236,.45); margin-bottom: 18px;
}
.qn-footer-col a {
  display: block; color: rgba(245,242,236,.8); text-decoration: none;
  font-size: 14px; margin-bottom: 12px; transition: color .2s;
}
.qn-footer-col a:hover { color: var(--accent); }
.qn-footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding-top: 24px; font-size: 12px; color: rgba(245,242,236,.4);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 860px) {
  .qn-nav { padding: 0 20px; }
  .qn-nav-links { gap: 16px; }
  .qn-nav-links li:not(:last-child):not(.keep) { display: none; }
  .qn-wrap { padding: 0 20px; }
  .qn-head { padding: 120px 0 48px; }
  .qn-item { grid-template-columns: 1fr; gap: 14px; padding: 36px 0; }
  .qn-footer { padding: 56px 20px 28px; }
  .qn-footer-top { grid-template-columns: 1fr; gap: 36px; }
}

/* ============================================================
   ARTICLE PAGES — used by _TEMPLATE and any future article
   ============================================================ */
.qn-article { max-width: 40rem; margin: 0 auto; padding: 150px 24px 40px; }
.qn-article .qn-label { margin-bottom: 20px; }
.qn-article h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(34px, 5vw, 52px); line-height: 1.08; margin-bottom: 20px;
}
.qn-article .deck { font-size: 20px; color: var(--muted); margin-bottom: 28px; }
.qn-article .byline {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted);
  padding-bottom: 36px; border-bottom: 1px solid var(--rule);
}
.qn-body { max-width: 40rem; margin: 0 auto; padding: 0 24px 40px; font-size: 17px; line-height: 1.75; }
.qn-body > * + * { margin-top: 1.35em; }
.qn-body h2 {
  font-family: var(--serif); font-weight: 400; font-size: 30px;
  line-height: 1.2; margin-top: 2.4em; margin-bottom: -.3em;
}
.qn-body h3 { font-size: 19px; font-weight: 600; margin-top: 2em; margin-bottom: -.4em; }
.qn-body a { color: var(--accent); text-underline-offset: 2px; }
.qn-body ul, .qn-body ol { padding-left: 1.3em; }
.qn-body li + li { margin-top: .5em; }
.qn-body blockquote {
  border-left: 2px solid var(--accent); padding-left: 22px;
  color: var(--muted); font-style: italic;
}
.qn-body img { display: block; margin: 2.2em auto; }
.qn-body code {
  font-family: var(--mono); font-size: .88em;
  background: var(--card2); padding: 2px 6px;
}
.qn-body pre {
  background: var(--dark); color: #f5f2ec; padding: 20px 22px;
  overflow-x: auto; font-family: var(--mono); font-size: 14px; line-height: 1.6;
}
.qn-body pre code { background: none; padding: 0; }
.qn-body hr { border: none; border-top: 1px solid var(--rule); margin: 2.6em 0; }

/* end-of-article actions */
.qn-end-block { max-width: 40rem; margin: 0 auto; padding: 48px 24px 110px; }
.qn-end-block { border-top: 1px solid var(--rule); margin-top: 40px; }
.qn-end-block h2 {
  font-family: var(--serif); font-weight: 400; font-size: 28px;
  line-height: 1.2; margin: 40px 0 10px;
}
.qn-end-block p { color: var(--muted); margin-bottom: 26px; }
.qn-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.qn-btn2 {
  display: inline-block; background: var(--accent); color: #f5f2ec;
  padding: 12px 22px; font-family: var(--mono); font-size: 11px; font-weight: 500;
  letter-spacing: .12em; text-transform: uppercase; text-decoration: none;
  transition: opacity .2s;
}
.qn-btn2:hover { opacity: .85; }
.qn-btn2.ghost { background: transparent; color: var(--ink); border: 1px solid var(--rule); }
.qn-btn2.ghost:hover { border-color: var(--accent); color: var(--accent); }

@media (max-width: 860px) {
  .qn-article { padding: 110px 20px 32px; }
  .qn-body, .qn-end-block { padding-left: 20px; padding-right: 20px; }
}