/* Azimuth North — shared styles for the Library hub + article reader pages */
:root{
  --ink:#12161d;--ink-2:#1a2029;--paper:#f2efe6;--paper-2:#eae6d8;
  --brass:#bf9b56;--brass-dim:rgba(191,155,86,.55);--mint:#37d3b4;
  --oxblood:#a03325;--sepia:#5c503c;--line:rgba(46,38,26,.2);
  --line-dark:rgba(242,239,230,.16);
  --mono:'IBM Plex Mono',monospace;--serif:'Space Grotesk',sans-serif;--disp:'Fraunces',serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{font-family:var(--serif);background:var(--paper);color:var(--ink);font-size:16px;-webkit-font-smoothing:antialiased}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.reader-wrap{max-width:748px;margin:0 auto;padding:0 32px}
::selection{background:var(--mint);color:var(--ink)}

/* ---------- nav (shared with home/about) ---------- */
nav{position:fixed;top:0;left:0;right:0;z-index:60;padding:16px 0;background:rgba(18,22,29,.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-dark)}
nav .wrap{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:13px;color:var(--paper);text-decoration:none}
.brand svg{width:36px;height:36px}
.brand .wm-stack{display:flex;flex-direction:column;gap:3px}
.brand .wm{font-family:var(--disp);font-weight:600;font-size:19px;letter-spacing:.2em;line-height:1}
.brand .deg{color:var(--brass);font-weight:400;font-size:.7em;vertical-align:.5em}
.brand .wm-sub{font-family:var(--mono);font-size:8.5px;letter-spacing:.24em;text-transform:uppercase;color:rgba(242,239,230,.55)}
.nav-right{display:flex;gap:28px;align-items:center}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:rgba(239,230,208,.75);text-decoration:none;font-size:13px;font-family:var(--mono);letter-spacing:.14em;text-transform:uppercase;transition:color .25s}
.nav-links a:hover,.nav-links a.active{color:var(--brass)}
.nav-cta{position:relative;border:1px solid var(--brass-dim);outline:1px solid var(--brass-dim);outline-offset:3px;padding:9px 18px;color:var(--paper) !important;transition:border-color .25s,background .25s}
.nav-cta::before{content:"";position:absolute;inset:-8px}
/* invisible tap-area expansion for small inline links (44x44px min touch target) */
.tap-target{position:relative;display:inline-block}
.tap-target::before{content:"";position:absolute;inset:-16px}
.nav-cta:hover{border-color:var(--brass);background:rgba(191,155,86,.12)}
.nav-toggle{display:none;background:none;border:none;padding:10px;cursor:pointer;flex-direction:column;gap:5px;width:44px;height:44px;align-items:center;justify-content:center;flex-shrink:0}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--paper);transition:transform .3s cubic-bezier(.22,1,.36,1),opacity .2s}
nav.open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
nav.open .nav-toggle span:nth-child(2){opacity:0}
nav.open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:900px){
  nav .wrap{position:relative}
  .brand .wm-sub{display:none}
  .nav-toggle{display:flex}
  .nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:rgba(18,22,29,.97);border-top:1px solid var(--line-dark);padding:6px 32px 18px;max-height:0;overflow:hidden;transition:max-height .35s cubic-bezier(.22,1,.36,1)}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line-dark);font-size:14px}
  nav.open .nav-links{max-height:420px}
}
@media (prefers-reduced-motion:reduce){.nav-links{transition:none}.nav-toggle span{transition:none}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:11px;font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;text-decoration:none;padding:15px 28px;border-radius:2px}
.btn-solid{background:var(--oxblood);color:var(--paper);border:1px solid var(--oxblood);outline:1px solid var(--brass-dim);outline-offset:4px;transition:background .3s,color .3s,border-color .3s}
.btn-solid:hover{background:var(--brass);color:var(--ink);border-color:var(--brass)}
.btn-ghost{color:inherit;border:1px solid var(--line);transition:border-color .25s,color .25s}
.btn-ghost:hover{border-color:var(--brass);color:var(--oxblood)}
.on-dark .btn-ghost{color:var(--paper);border-color:rgba(239,230,208,.35)}
.on-dark .btn-ghost:hover{border-color:var(--brass);color:var(--brass)}
.plate{font-family:var(--mono);font-size:11px;letter-spacing:.34em;text-transform:uppercase;display:flex;align-items:center;gap:16px;color:var(--brass)}
.plate::before{content:"";width:44px;height:1px;background:var(--brass-dim)}

/* ---------- library hub ---------- */
.lib-head{padding:158px 0 66px;background:var(--ink);color:var(--paper);position:relative;overflow:hidden}
.lib-head .wrap{position:relative;z-index:2}
.lib-head h1{font-family:var(--disp);font-weight:500;font-size:clamp(40px,5.4vw,70px);line-height:1.02;letter-spacing:-.02em;margin:22px 0 20px}
.lib-head h1 em{font-style:italic;font-weight:400;color:var(--brass)}
.lib-head p{font-size:18px;line-height:1.6;color:rgba(239,230,208,.72);max-width:620px}
.lib-body{padding:72px 0 120px;background:var(--paper-2)}
.lib-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.lib-card{display:flex;flex-direction:column;gap:14px;background:var(--paper);border:1px solid var(--line);padding:32px 28px 28px;text-decoration:none;color:inherit;position:relative;transition:transform .45s cubic-bezier(.22,1,.36,1),box-shadow .45s,border-color .45s}
.lib-card::after{content:"";position:absolute;inset:5px;border:1px solid transparent;transition:border-color .45s;pointer-events:none}
.lib-card:hover{transform:translateY(-8px);box-shadow:0 26px 48px -22px rgba(46,38,26,.4);border-color:var(--brass)}
.lib-card:hover::after{border-color:rgba(191,155,86,.4)}
.lib-card .k{font-family:var(--mono);font-size:10px;letter-spacing:.24em;text-transform:uppercase;color:var(--sepia);display:flex;justify-content:space-between;gap:10px}
.lib-card h2{font-family:var(--disp);font-size:21px;font-weight:500;line-height:1.22;color:var(--ink)}
.lib-card p{font-size:14.5px;line-height:1.6;color:rgba(18,22,29,.68);flex:1}
.lib-card .foot{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--oxblood);margin-top:4px}
.lib-card:hover .foot{color:var(--sepia)}
.lib-card .pdf{color:var(--sepia)}
@media(max-width:900px){.lib-grid{grid-template-columns:1fr}}

/* ---------- article ---------- */
.article-head{padding:150px 0 46px;background:var(--ink);color:var(--paper)}
.back{display:inline-flex;gap:8px;font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:rgba(239,230,208,.55);text-decoration:none;margin-bottom:22px}
.back:hover{color:var(--brass)}
.article-head .meta{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--brass);display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.article-head .meta .dot{width:4px;height:4px;border-radius:50%;background:var(--brass-dim)}
.article-head h1{font-family:var(--disp);font-weight:500;font-size:clamp(32px,4.4vw,54px);line-height:1.06;letter-spacing:-.02em;margin:20px 0 18px;max-width:22ch}
.article-head .standfirst{font-family:var(--disp);font-style:italic;font-size:20px;line-height:1.5;color:rgba(239,230,208,.75);max-width:60ch}
.article-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px}
.article-body{padding:64px 0 40px;background:var(--paper)}
.prose{font-size:18px;line-height:1.75;color:rgba(18,22,29,.84)}
.prose>*+*{margin-top:24px}
.prose h2{font-family:var(--disp);font-weight:500;font-size:29px;line-height:1.2;letter-spacing:-.01em;margin-top:50px;color:var(--ink)}
.prose h3{font-family:var(--disp);font-weight:500;font-size:22px;margin-top:36px;color:var(--ink)}
.prose strong{font-weight:600;color:var(--ink)}
.prose ul,.prose ol{padding-left:22px;display:grid;gap:9px}
.prose li{line-height:1.7}
.prose blockquote{border-left:3px solid var(--brass);padding:4px 0 4px 26px;font-family:var(--disp);font-style:italic;font-size:22px;line-height:1.4;color:var(--sepia)}
.prose a{color:var(--oxblood);text-decoration:underline;text-decoration-color:var(--brass-dim);text-underline-offset:3px}
.prose hr{border:0;height:1px;background:var(--line);margin:42px 0}
.byline{display:flex;align-items:center;gap:14px;margin-top:52px;padding-top:26px;border-top:1px solid var(--line);font-size:15px;line-height:1.5;color:var(--sepia)}
.byline .av{width:44px;height:44px;border-radius:50%;background:var(--ink);flex-shrink:0;display:flex;align-items:center;justify-content:center}
.byline b{font-family:var(--disp);font-weight:500;font-style:normal;color:var(--ink)}
.article-cta{background:var(--paper-2);padding:70px 0;text-align:center}
.article-cta h2{font-family:var(--disp);font-weight:500;font-size:clamp(26px,3.4vw,38px);letter-spacing:-.01em;margin-bottom:22px}
.article-cta h2 em{font-style:italic;font-weight:400;color:var(--oxblood)}

/* ---------- footer ---------- */
footer{background:var(--ink);color:rgba(239,230,208,.55);border-top:1px solid var(--line-dark);padding:44px 0}
footer .wrap{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
footer .coords{font-family:var(--mono);font-size:10.5px;letter-spacing:.22em;display:flex;align-items:center;gap:12px}
footer a{color:rgba(239,230,208,.7);text-decoration:none;font-family:var(--mono);font-size:12px;letter-spacing:.1em}
footer a:hover{color:var(--brass)}
:focus-visible{outline:2px solid var(--brass);outline-offset:3px}
@media(max-width:600px){footer .wrap{flex-direction:column;text-align:center}.reader-wrap,.wrap{padding:0 22px}.prose{font-size:16.5px}.article-head h1{font-size:clamp(28px,8vw,40px)}}

/* ---------- print / PDF export ---------- */
@media print{
  nav,.article-actions,.back,.article-cta,footer .coords svg{display:none !important}
  body{background:#fff;color:#12161d}
  .article-head{background:#fff;color:#12161d;padding:0 0 16px;border-bottom:1px solid #d9d2c2}
  .article-head .meta{color:#8a6d2f}
  .article-head .standfirst{color:#5c503c}
  .article-body{padding:22px 0;background:#fff}
  .prose{font-size:11.5pt;line-height:1.6;color:#1a1f28}
  .prose h2{font-size:16pt;margin-top:22pt}
  .prose blockquote{color:#5c503c}
  .reader-wrap{max-width:100%;padding:0}
  a{color:#a03325 !important;text-decoration:none}
  footer{background:#fff;color:#5c503c;border-color:#d9d2c2}
}