/* ============================================================
   TACITURI — discovery site
   Design system: paper & ink, classical serif, one bronze accent
   ============================================================ */

/* ---- Fonts ---- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500&family=EB+Garamond:ital,wght@0,400;0,500;1,400&family=Jost:wght@300;400;500&family=Spline+Sans+Mono:wght@400;500&display=swap');

/* ---- Tokens ---- */
:root{
  --paper:        #ece5d8;
  --paper-2:      #e3dccd;
  --paper-card:   #f1ebe0;
  --ink:          #21242a;   /* charcoal, cool */
  --ink-2:        #191c21;   /* deeper for dark rooms */
  --ink-soft:     #2b2f36;
  --text:         #2a2924;   /* warm near-black on paper */
  --text-2:       #4a463d;
  --muted:        #726c5f;   /* warm gray */
  --line:         #c9c0ae;
  --line-soft:    #d6cdbc;
  --bronze:       #9a7b4f;
  --bronze-2:     #876a41;
  --bronze-lite:  #b89968;

  /* on-dark */
  --d-text:       #e7e0d2;
  --d-text-2:     #cfc7b6;
  --d-muted:      #9a9180;
  --d-line:       rgba(231,224,210,.16);
  --d-line-2:     rgba(231,224,210,.30);

  --serif:  'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --body:   'EB Garamond', Georgia, serif;
  --sans:   'Jost', system-ui, sans-serif;
  --mono:   'Spline Sans Mono', ui-monospace, monospace;

  --maxw: 1280px;
  --pad: clamp(20px, 5vw, 72px);
  --ease: cubic-bezier(.22,.61,.36,1);
}

*{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--body);
  font-size:22px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
::selection{ background:rgba(154,123,79,.26); }

/* paper grain overlay */
body::before{
  content:""; position:fixed; inset:0; z-index:9999; pointer-events:none;
  opacity:.05; mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Typography helpers ---- */
.label{
  font-family:var(--sans); font-weight:400;
  text-transform:uppercase; letter-spacing:.32em;
  font-size:15px; color:var(--muted);
}
.label.bronze{ color:var(--bronze-2); }
.mono{ font-family:var(--mono); font-size:15px; letter-spacing:.02em; color:var(--muted); }
.serif{ font-family:var(--serif); }

h1,h2,h3,h4{ font-family:var(--serif); font-weight:400; margin:0; line-height:1.04; letter-spacing:.005em; }
.display{ font-weight:300; letter-spacing:.02em; }

.eyebrow{
  display:inline-flex; align-items:center; gap:.7em;
  font-family:var(--sans); text-transform:uppercase; letter-spacing:.32em;
  font-size:15px; color:var(--muted); margin:0 0 1.6rem;
}
.eyebrow::before{ content:""; width:34px; height:1px; background:var(--bronze); opacity:.7; }

/* wordmark */
.wordmark{
  font-family:var(--serif); font-weight:500; letter-spacing:.42em;
  text-transform:uppercase; line-height:1;
}

/* ---- Layout ---- */
.wrap{ max-width:var(--maxw); margin:0 auto; padding-inline:var(--pad); }
.section{ padding-block:clamp(64px,9vw,140px); position:relative; }
.rule{ height:1px; background:var(--line); border:0; margin:0; }
.rule.soft{ background:var(--line-soft); }

/* ---- Portal symbol ---- */
.portal{ display:inline-block; }
.portal path,.portal line{ fill:none; stroke:currentColor; stroke-width:1.4; vector-effect:non-scaling-stroke; }

/* ===========================================================
   Top navigation
   =========================================================== */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:120;
  display:flex; align-items:center; justify-content:space-between;
  gap:24px; padding:18px var(--pad);
  transition:background .4s var(--ease), border-color .4s var(--ease), padding .4s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter:blur(10px) saturate(1.05);
  border-bottom-color:var(--line-soft);
  padding-block:13px;
}
body.theme-dark .nav.scrolled{
  background:color-mix(in srgb, var(--ink-2) 80%, transparent);
  border-bottom-color:var(--d-line);
}
.nav-brand{ display:flex; align-items:center; gap:13px; }
.nav-brand .portal{ width:20px; height:26px; color:var(--text); }
.nav-brand .wm{ font-family:var(--serif); font-weight:500; letter-spacing:.34em; font-size:18px; text-transform:uppercase; color:var(--text); }
body.theme-dark .nav-brand .portal,
body.theme-dark .nav-brand .wm{ color:var(--d-text); }

.nav-links{ display:flex; align-items:center; gap:30px; }
.nav-links a{
  font-family:var(--sans); text-transform:uppercase; letter-spacing:.2em; font-size:14px;
  color:var(--muted); padding:6px 0; position:relative; transition:color .3s;
}
.nav-links a:hover,.nav-links a[aria-current="page"]{ color:var(--text); }
.nav-links a[aria-current="page"]::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:1px; background:var(--bronze);
}
body.theme-dark .nav-links a{ color:var(--d-muted); }
body.theme-dark .nav-links a:hover,
body.theme-dark .nav-links a[aria-current="page"]{ color:var(--d-text); }

.nav-cta{
  font-family:var(--sans); text-transform:uppercase; letter-spacing:.16em; font-size:13.5px;
  border:1px solid var(--line); color:var(--text);
  padding:11px 19px; border-radius:1px; transition:all .3s var(--ease);
  display:inline-flex; align-items:center; gap:9px; white-space:nowrap;
}
.nav-cta:hover{ border-color:var(--bronze); color:var(--bronze-2); }
body.theme-dark .nav-cta{ border-color:var(--d-line-2); color:var(--d-text); }
body.theme-dark .nav-cta:hover{ border-color:var(--bronze-lite); color:var(--bronze-lite); }

.nav-links > .nav-cta{ display:none; }
.nav-burger{ display:none; background:none; border:0; cursor:pointer; padding:8px; }
.nav-burger span{ display:block; width:24px; height:1.4px; background:currentColor; margin:5px 0; color:var(--text); }
body.theme-dark .nav-burger span{ background:var(--d-text); }

/* ---- Buttons ---- */
.btn{
  display:inline-flex; align-items:center; gap:12px;
  font-family:var(--sans); text-transform:uppercase; letter-spacing:.18em; font-size:14.5px;
  padding:16px 28px; border-radius:1px; border:1px solid var(--line);
  color:var(--text); background:transparent; cursor:pointer; transition:all .35s var(--ease);
}
.btn .ar{ transition:transform .35s var(--ease); }
.btn:hover .ar{ transform:translateX(4px); }
.btn-primary{ background:var(--ink); color:var(--d-text); border-color:var(--ink); }
.btn-primary:hover{ background:var(--ink-2); }
.btn-bronze{ background:var(--bronze); border-color:var(--bronze); color:#1d1a14; }
.btn-bronze:hover{ background:var(--bronze-2); }
.btn-ghost:hover{ border-color:var(--bronze); color:var(--bronze-2); }
body.theme-dark .btn-ghost{ border-color:var(--d-line-2); color:var(--d-text); }
body.theme-dark .btn-ghost:hover{ border-color:var(--bronze-lite); color:var(--bronze-lite); }
.btn-lg{ padding:19px 36px; font-size:15px; }

/* ---- Marginalia annotation ---- */
.marg{ font-family:var(--mono); font-size:15px; line-height:1.72; letter-spacing:.01em; color:var(--muted); }
.marg .num{
  display:inline-flex; align-items:center; justify-content:center;
  width:26px; height:26px; border-radius:50%; border:1px solid var(--line);
  font-size:12.5px; color:var(--bronze-2); margin-bottom:10px;
}
.dot-lead{ color:var(--bronze); }

/* ---- Reveal ---- */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity 1.1s var(--ease), transform 1.1s var(--ease); }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* ===========================================================
   Footer / colofon
   =========================================================== */
.foot{ background:var(--ink-2); color:var(--d-text); padding-block:clamp(56px,7vw,90px); }
.foot a{ color:var(--d-text-2); }
.foot-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:48px; }
.foot .wordmark{ font-size:30px; color:var(--d-text); }
.foot .portal{ width:30px; height:38px; color:var(--bronze-lite); margin-bottom:20px; }
.foot h4{ font-family:var(--sans); text-transform:uppercase; letter-spacing:.26em; font-size:13.5px; color:var(--d-muted); font-weight:400; margin-bottom:20px; }
.foot ul{ list-style:none; margin:0; padding:0; }
.foot li{ margin-bottom:12px; }
.foot li a{ font-family:var(--sans); font-size:15.5px; letter-spacing:.03em; color:var(--d-text-2); transition:color .3s; }
.foot li a:hover{ color:var(--bronze-lite); }
.foot-tag{ font-family:var(--serif); font-style:italic; font-size:23px; color:var(--d-text-2); max-width:30ch; line-height:1.4; }
.foot-base{ border-top:1px solid var(--d-line); margin-top:54px; padding-top:26px; display:flex; flex-wrap:wrap; gap:14px 30px; justify-content:space-between; align-items:center; }
.foot-base .mono{ color:var(--d-muted); font-size:13.5px; }
.streamrow{ display:flex; gap:10px; flex-wrap:wrap; }
.stream{
  display:inline-flex; align-items:center; gap:9px; padding:9px 15px;
  border:1px solid var(--d-line-2); border-radius:1px;
  font-family:var(--sans); text-transform:uppercase; letter-spacing:.14em; font-size:13px; color:var(--d-text-2);
  transition:all .3s var(--ease);
}
.stream:hover{ border-color:var(--bronze-lite); color:var(--bronze-lite); }
.stream svg{ width:14px; height:14px; }

/* ===========================================================
   Lightbox
   =========================================================== */
.lightbox{
  position:fixed; inset:0; z-index:300; display:none;
  background:rgba(16,18,21,.94); backdrop-filter:blur(6px);
  align-items:center; justify-content:center; padding:5vh 4vw;
}
.lightbox.open{ display:flex; }
.lb-stage{ margin:0; display:flex; flex-direction:column; align-items:center; gap:18px; max-width:100%; }
.lightbox img{ max-width:100%; max-height:84vh; box-shadow:0 30px 80px rgba(0,0,0,.6); }
.lb-cap{ display:flex; align-items:baseline; gap:16px; flex-wrap:wrap; justify-content:center; color:var(--d-text-2); text-align:center; }
.lb-count{ font-size:12.5px; letter-spacing:.24em; color:var(--bronze-lite); white-space:nowrap; }
.lb-caption{ font-family:var(--serif); font-style:italic; font-size:18px; color:var(--d-text); }
.lightbox .lb-close{
  position:absolute; top:24px; right:30px; background:none; border:0; cursor:pointer;
  font-family:var(--sans); text-transform:uppercase; letter-spacing:.2em; font-size:13.5px; color:var(--d-text-2);
  display:flex; align-items:center; gap:8px; z-index:2;
}
.lightbox .lb-close:hover{ color:var(--d-text); }
.lb-nav{
  position:absolute; top:50%; transform:translateY(-50%); z-index:2;
  width:56px; height:56px; border-radius:50%; cursor:pointer;
  background:rgba(255,255,255,.06); border:1px solid var(--d-line-2); color:var(--d-text);
  display:flex; align-items:center; justify-content:center; transition:background .2s var(--ease), border-color .2s var(--ease);
}
.lb-nav svg{ width:26px; height:26px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.lb-nav:hover{ background:rgba(255,255,255,.14); border-color:var(--bronze-lite); }
.lb-prev{ left:max(18px,2vw); }
.lb-next{ right:max(18px,2vw); }
.lb-nav[hidden]{ display:none; }
.lightbox :focus-visible{ outline:2px solid var(--bronze-lite); outline-offset:3px; }
@media (max-width:600px){
  .lb-nav{ width:46px; height:46px; }
  .lb-prev{ left:8px; } .lb-next{ right:8px; }
  .lb-caption{ font-size:16px; }
}

/* responsive nav */
@media (max-width:860px){
  .nav-links{
    position:fixed; inset:0 0 0 auto; width:min(78vw,320px);
    flex-direction:column; align-items:flex-start; justify-content:center; gap:26px;
    background:var(--ink-2); padding:40px var(--pad); transform:translateX(100%);
    transition:transform .45s var(--ease); z-index:130;
  }
  .nav-links.open{ transform:none; }
  .nav-links a{ color:var(--d-text-2); font-size:17px; }
  .nav-links a:hover,.nav-links a[aria-current="page"]{ color:var(--d-text); }
  .nav-burger{ display:block; z-index:140; }
  .nav-cta.desktop{ display:none; }
  .nav-links > .nav-cta{ display:inline-flex; margin-top:12px; }
  .foot-grid{ grid-template-columns:1fr; gap:36px; }
}