/* Shared look for every page: colors, header, footer, simple text pages.
   Page-specific layouts (home, books, links, arc-welcome) have their own small CSS files. */
:root{
  --ink:#17130f; --muted:#675f57; --paper:#fbf8f1; --header-bg:#f9f6ef; --card:#fff;
  --gold:#a97812; --gold-btn:#9d750b; --gold-dark:#775109; --gold-line:#c5a65a;
  --line:rgba(112,81,30,.22); --serif:Georgia,'Times New Roman',serif; --sans:Arial,Helvetica,sans-serif;
  --header-h:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--sans);line-height:1.55}
img{max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3{font-family:var(--serif)}
[id]{scroll-margin-top:calc(var(--header-h) + 16px)}
.skip-link{position:absolute;left:-999px;top:8px;z-index:100;background:#fff;padding:10px 14px;border:1px solid var(--gold-line)}
.skip-link:focus{left:8px}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.3em;min-height:44px;padding:11px 20px;border:1px solid var(--gold-btn);border-radius:999px;background:transparent;color:var(--gold-dark);font:700 14px/1.2 var(--sans);text-decoration:none;transition:background .18s,color .18s,transform .18s}
.btn:hover{transform:translateY(-1px);background:#fff9e9}
.btn--gold{background:var(--gold-btn);color:#fff}
.btn--gold:hover{background:#856207;color:#fff}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:var(--header-bg);border-bottom:1px solid var(--line)}
.site-header__inner{display:flex;align-items:center;gap:28px;width:min(1240px,100% - 32px);margin:0 auto;min-height:var(--header-h);padding:6px 0}
.site-logo{display:block;flex:none;line-height:0}
.site-logo img{height:84px;width:auto}
.site-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.site-nav ul{display:flex;gap:30px;margin:0;padding:0;list-style:none}
.site-nav li a{font-size:15px;color:#0d141a;text-decoration:none;padding:6px 0;border-bottom:2px solid transparent}
.site-nav li a:hover,.site-nav li a[aria-current]{border-bottom-color:var(--gold)}
.nav-toggle{display:none}
@media(max-width:900px){
  :root{--header-h:72px}
  .site-logo img{height:60px}
  .site-nav ul{gap:18px}
  .site-nav li a{font-size:14px}
}
@media(max-width:780px){
  .js .nav-toggle{display:inline-flex;align-items:center;gap:8px;margin-left:auto;min-height:44px;padding:8px 12px;border:1px solid var(--gold-line);border-radius:999px;background:#fff;color:var(--gold-dark);font:700 13px var(--sans);cursor:pointer}
  .nav-toggle__bars,.nav-toggle__bars::before,.nav-toggle__bars::after{display:block;width:16px;height:2px;background:currentColor;position:relative;content:""}
  .nav-toggle__bars::before{position:absolute;top:-5px}.nav-toggle__bars::after{position:absolute;top:5px}
  .site-header__inner{flex-wrap:wrap;gap:10px}
  .site-nav{width:100%;flex-direction:column;align-items:stretch;gap:12px;padding:4px 0 14px}
  .js .site-nav{display:none}
  .js .site-header.is-open .site-nav{display:flex}
  .site-nav ul{flex-direction:column;gap:0}
  .site-nav li a{display:block;padding:12px 2px;font-size:17px;border-bottom:1px solid var(--line)}
  .site-nav li a[aria-current]{color:var(--gold-dark);border-bottom-color:var(--line);font-weight:700}
  .site-nav__cta{align-self:flex-start}
}

/* Footer */
.site-footer{background:var(--header-bg);border-top:1px solid var(--line);text-align:center}
.footer-cake{padding:34px 18px 30px;border-bottom:1px solid var(--line)}
.footer-cake__kicker{margin:0 0 9px;color:#916a12;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}
.footer-cake__text{max-width:720px;margin:0 auto 18px;font-size:16px;line-height:1.5;color:#242424}
.footer-cake__fine{margin:12px 0 0;font-size:12px;color:#595959}
.footer-connect{padding:34px 18px 30px}
.footer-connect__logo{width:110px;height:auto;margin:0 auto 10px;display:block}
.footer-connect__text{margin:0 0 14px;font-size:14px;line-height:1.5}
.footer-connect__icons{display:flex;justify-content:center;gap:10px}
.footer-connect__icons a{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;color:var(--gold-dark);border:1px solid var(--line);background:#fff;transition:background .18s,color .18s}
.footer-connect__icons a:hover{background:var(--gold-btn);color:#fff}
.footer-connect__fine{margin:22px 0 0;font-size:12px;color:var(--muted)}
.footer-connect__fine a{color:var(--gold-dark)}

/* Simple text pages (About, ARC team, Contact, 404) in the gold/serif links-page look */
.textpage{width:min(1160px,100% - 48px);margin:0 auto;padding:64px 0 72px}
.ornament{width:72px;height:1px;background:#b28a2e;margin:0 0 22px}
.kicker{margin:0 0 14px;color:#8a681c;font-size:12px;font-weight:700;letter-spacing:.24em;text-transform:uppercase}
.kicker a{text-decoration:none}
.textpage h1{margin:0 0 22px;font-weight:400;font-size:clamp(34px,5vw,52px);line-height:1.08;color:var(--ink)}
.textpage h2{font-weight:400}
.textpage .lede{font-family:var(--serif);font-size:19px;line-height:1.6;color:#4a443a}
.textpage .lede p{margin:0 0 1.1em}
.textpage .split{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:64px;align-items:start}
.textpage .panel{background:#fff;border:1px solid var(--gold-line);border-radius:4px;padding:28px 24px;box-shadow:0 3px 12px rgba(74,54,12,.05)}
.closing{font-family:var(--serif);font-style:italic;color:#675c49;font-size:17px}
@media(max-width:860px){.textpage .split{grid-template-columns:1fr;gap:36px}}
@media(max-width:640px){.textpage{width:calc(100% - 32px);padding:40px 0 52px}.textpage .lede{font-size:17px}}

/* Date switches (see build.py) must win over any display rule */
[hidden]{display:none!important}