/* =========================================================
   Voynich Research — stylesheet
   Palette: parchment / deep ink / astral gold
   ========================================================= */

:root{
  --bg:            #f3ecd8;
  --bg-soft:       #ece2c6;
  --paper:         #fbf6e9;
  --ink:           #1e1b2e;
  --ink-soft:      #4a4560;
  --ink-faint:     #746f8a;
  --rule:          #d9c9a0;
  --rule-soft:     #e6dabd;
  --accent:        #6b3fa0;
  --accent-dark:   #4a2a72;
  --gold:          #a9781f;
  --gold-soft:     #cf9f3f;
  --status-explore:#a9781f;
  --status-explore-bg:#f6ead0;
  --status-none:   #7a7460;
  --status-none-bg:#ece5d3;
  --status-serious:#2f6b4f;
  --status-serious-bg:#e2eee4;
  --status-tech:   #2a5a8c;
  --status-tech-bg:#e3ecf5;
  --radius: 14px;
  --maxw: 1080px;
  --shadow: 0 10px 30px -12px rgba(30,27,46,0.25);
  color-scheme: light;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:            #16131f;
    --bg-soft:       #1c1829;
    --paper:         #201c30;
    --ink:           #f1ecdd;
    --ink-soft:      #cfc9df;
    --ink-faint:     #948db0;
    --rule:          #3a3450;
    --rule-soft:     #2c2740;
    --accent:        #b48ee8;
    --accent-dark:   #d8bdfa;
    --gold:          #e2b866;
    --gold-soft:     #f0d698;
    --status-explore:#e2b866; --status-explore-bg:#3a3120;
    --status-none:   #a9a3bd; --status-none-bg:#2a2638;
    --status-serious:#7fd3ab; --status-serious-bg:#1f3329;
    --status-tech:   #8fbdec; --status-tech-bg:#1f2c3d;
    --shadow: 0 10px 34px -12px rgba(0,0,0,0.6);
  }
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  line-height:1.65;
  font-size:17px;
}
h1,h2,h3,h4{
  font-family:'Playfair Display', Georgia, serif;
  color:var(--ink);
  line-height:1.22;
  margin:0 0 .5em;
  font-weight:700;
}
p{margin:0 0 1em;overflow-wrap:break-word;}
a{color:var(--accent-dark);}
img{display:block;max-width:100%;height:auto;border-radius:10px;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.mono{font-family:'JetBrains Mono', 'Courier New', monospace;}

/* ---------- top bar ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--rule);
}
.topbar-inner{
  max-width:var(--maxw);margin:0 auto;padding:12px 24px;
  display:flex;align-items:center;gap:18px;justify-content:space-between;
}
.brand{
  display:flex;align-items:baseline;gap:8px;font-family:'Playfair Display',serif;
  font-weight:700;font-size:1.05rem;color:var(--ink);text-decoration:none;
  letter-spacing:.02em;
}
.brand .dot{color:var(--gold);}
.topnav{display:flex;gap:2px;flex-wrap:wrap;}
.topnav a{
  font-family:inherit;font-size:.86rem;color:var(--ink-soft);text-decoration:none;
  padding:8px 10px;border-radius:8px;white-space:nowrap;
}
.topnav a:hover{background:var(--bg-soft);color:var(--ink);}
.langswitch{display:flex;border:1px solid var(--rule);border-radius:999px;overflow:hidden;flex-shrink:0;}
.langswitch a{
  padding:6px 13px;font-size:.8rem;font-weight:600;text-decoration:none;color:var(--ink-faint);
  letter-spacing:.03em;
}
.langswitch a.active{background:var(--accent);color:#fff;}
.navtoggle{display:none;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:76px 0 60px;
  background:
    radial-gradient(ellipse 60% 50% at 15% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%),
    radial-gradient(ellipse 50% 60% at 100% 10%, color-mix(in srgb, var(--gold) 18%, transparent), transparent 65%);
  border-bottom:1px solid var(--rule);
}
.hero .stars{position:absolute;inset:0;opacity:.5;pointer-events:none;}
.kicker{
  display:inline-block;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold);font-weight:700;margin-bottom:14px;font-family:'Playfair Display',serif;
}
.hero h1{font-size:clamp(2.1rem,5vw,3.4rem);margin-bottom:.3em;}
.hero .sub{font-size:1.18rem;color:var(--ink-soft);max-width:640px;margin-bottom:.6em;}
.hero .desc{font-size:1rem;color:var(--ink-faint);max-width:600px;font-style:italic;margin-bottom:1.6em;}
.byline{font-size:.92rem;color:var(--ink-faint);margin-bottom:22px;}
.byline strong{color:var(--ink-soft);}
.badge-caution{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--status-explore-bg);color:var(--status-explore);
  border:1px solid color-mix(in srgb, var(--status-explore) 35%, transparent);
  padding:10px 16px;border-radius:999px;font-size:.86rem;font-weight:600;margin-bottom:28px;
}
.badge-caution .ring{width:8px;height:8px;border-radius:50%;background:var(--status-explore);flex-shrink:0;}
.herobtns{display:flex;gap:12px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:999px;text-decoration:none;font-weight:600;font-size:.94rem;
  font-family:'Playfair Display',serif;
  border:1px solid transparent;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);}
.btn-ghost{border-color:var(--rule);color:var(--ink);}
.btn-ghost:hover{background:var(--bg-soft);}

/* ---------- generic section ---------- */
section{padding:64px 0;}
.section-alt{background:var(--bg-soft);}
.eyebrow{
  font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gold);
  font-weight:700;margin-bottom:10px;
}
.section-head{max-width:720px;margin-bottom:36px;}
.section-head h2{font-size:clamp(1.6rem,3.4vw,2.2rem);}
.lede{color:var(--ink-soft);font-size:1.06rem;}

.card{
  background:var(--paper);border:1px solid var(--rule-soft);border-radius:var(--radius);
  padding:28px 30px;box-shadow:var(--shadow);
}

/* callout / principle box */
.principle{
  border-left:4px solid var(--accent);
  background:var(--paper);border-radius:0 12px 12px 0;
  padding:18px 22px;font-weight:600;color:var(--ink);
  box-shadow:var(--shadow);
}

/* pipeline */
.pipeline{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin:24px 0;font-family:'Playfair Display',serif;font-weight:700;
}
.pipeline .chip{
  background:var(--paper);border:1px solid var(--rule);border-radius:10px;
  padding:9px 16px;font-size:.92rem;box-shadow:var(--shadow);
}
.pipeline .arrow{color:var(--gold);font-size:1.1rem;}

/* test-family grid */
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:20px;}
.tf-card{background:var(--paper);border:1px solid var(--rule-soft);border-radius:12px;padding:18px 20px;}
.tf-card h4{font-size:.98rem;margin-bottom:6px;color:var(--accent-dark);}
.tf-card p{font-size:.9rem;color:var(--ink-soft);margin:0;}

/* documents */
.doc-row{display:flex;gap:16px;flex-wrap:wrap;margin-top:22px;}
.doc-btn{
  display:flex;align-items:center;gap:14px;background:var(--paper);border:1px solid var(--rule-soft);
  border-radius:12px;padding:16px 20px;text-decoration:none;color:var(--ink);min-width:230px;flex:1;
  box-shadow:var(--shadow);
}
.doc-btn:hover{border-color:var(--accent);}
.doc-ico{
  width:38px;height:38px;border-radius:8px;background:var(--accent);color:#fff;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-family:'Playfair Display',serif;font-weight:700;font-size:.78rem;
}
.doc-txt strong{display:block;font-family:'Playfair Display',serif;}
.doc-txt span{font-size:.82rem;color:var(--ink-faint);}

/* experiment cards */
.exp{
  border:1px solid var(--rule-soft);background:var(--paper);border-radius:var(--radius);
  padding:30px 32px;margin-bottom:26px;box-shadow:var(--shadow);
}
.exp-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:6px;}
.exp-num{color:var(--ink-faint);font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;font-weight:700;}
.exp h3{font-size:1.35rem;margin:2px 0 0;}
.status{
  display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:999px;
  font-size:.78rem;font-weight:700;white-space:nowrap;
}
.status .ring{width:7px;height:7px;border-radius:50%;}
.status-explore{background:var(--status-explore-bg);color:var(--status-explore);}
.status-explore .ring{background:var(--status-explore);}
.status-none{background:var(--status-none-bg);color:var(--status-none);}
.status-none .ring{background:var(--status-none);}
.status-serious{background:var(--status-serious-bg);color:var(--status-serious);}
.status-serious .ring{background:var(--status-serious);}
.status-tech{background:var(--status-tech-bg);color:var(--status-tech);}
.status-tech .ring{background:var(--status-tech);}

.exp-body{color:var(--ink-soft);}
.exp-body p{margin-bottom:.85em;}
.exp-note{
  background:var(--bg-soft);border-radius:10px;padding:14px 16px;font-size:.92rem;
  color:var(--ink-soft);margin:14px 0;border:1px dashed var(--rule);
}
.seq{
  display:inline-block;background:var(--ink);color:var(--gold-soft);padding:10px 14px;border-radius:8px;
  font-size:.86rem;letter-spacing:.03em;overflow-x:auto;max-width:100%;
}

.audio-block{
  background:var(--bg-soft);border:1px solid var(--rule);border-radius:12px;
  padding:18px 20px;margin:16px 0;
}
.audio-title{font-family:'Playfair Display',serif;font-weight:700;color:var(--ink);margin-bottom:10px;font-size:.98rem;}
.audio-block audio{width:100%;max-width:520px;display:block;border-radius:8px;}
.audio-sub{font-size:.85rem;color:var(--ink-faint);margin-top:10px;}
.audio-dl{display:inline-block;margin-top:10px;font-size:.86rem;font-weight:700;color:var(--accent-dark);text-decoration:none;}
.audio-dl:hover{text-decoration:underline;}

.figs{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:18px;}
.figs.figs-1{grid-template-columns:minmax(240px,520px);}
.fig figcaption{
  font-size:.82rem;color:var(--ink-faint);margin-top:8px;line-height:1.45;
}
.fig figcaption b{color:var(--ink-soft);}
.fig img{border:1px solid var(--rule-soft);}
.fig{margin:0;}

/* results table */
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--rule-soft);}
table.results{width:100%;border-collapse:collapse;background:var(--paper);font-size:.92rem;min-width:640px;}
table.results th{
  text-align:left;background:var(--accent);color:#fff;padding:12px 16px;font-family:'Playfair Display',serif;
  font-weight:700;font-size:.86rem;
}
table.results td{padding:12px 16px;border-bottom:1px solid var(--rule-soft);vertical-align:top;color:var(--ink-soft);}
table.results tr:last-child td{border-bottom:none;}
table.results td:first-child{font-weight:700;color:var(--ink);white-space:nowrap;}

/* two column establish / not */
.twocol{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
@media (max-width:760px){.twocol{grid-template-columns:1fr;}}
.col-card{background:var(--paper);border-radius:var(--radius);padding:26px 28px;box-shadow:var(--shadow);border:1px solid var(--rule-soft);}
.col-card.yes{border-top:4px solid var(--status-serious);}
.col-card.no{border-top:4px solid var(--status-none);}
.col-card h3{font-size:1.1rem;margin-bottom:14px;}
.col-card ul{margin:0;padding-left:1.2em;color:var(--ink-soft);font-size:.94rem;}
.col-card li{margin-bottom:.55em;}

/* protocol checklist */
.checklist{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:10px;}
.checklist li{
  display:flex;gap:12px;background:var(--paper);border:1px solid var(--rule-soft);border-radius:10px;
  padding:12px 16px;font-size:.94rem;color:var(--ink-soft);align-items:flex-start;
}
.checklist .num{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700;margin-top:1px;
}

/* timeline */
.timeline{position:relative;margin-top:30px;padding-left:34px;border-left:2px solid var(--rule);}
.tl-item{position:relative;padding-bottom:26px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:'';position:absolute;left:-40px;top:2px;width:14px;height:14px;border-radius:50%;
  background:var(--gold);border:3px solid var(--bg);
}
.tl-item .ph{font-size:.76rem;color:var(--gold);font-weight:700;letter-spacing:.08em;text-transform:uppercase;}
.tl-item p{margin:.2em 0 0;color:var(--ink-soft);font-size:.95rem;}

/* details / inventory */
details.inventory{background:var(--paper);border:1px solid var(--rule-soft);border-radius:var(--radius);padding:20px 26px;box-shadow:var(--shadow);}
details.inventory summary{cursor:pointer;font-family:'Playfair Display',serif;font-weight:700;font-size:1.05rem;color:var(--ink);}
details.inventory ul{columns:2;font-size:.88rem;color:var(--ink-soft);padding-left:1.1em;}
@media (max-width:640px){details.inventory ul{columns:1;}}
details.inventory li{margin-bottom:.5em;}

/* conclusion */
.conclusion-box{
  background:linear-gradient(135deg, var(--accent), var(--accent-dark));
  color:#fff;border-radius:var(--radius);padding:34px 36px;box-shadow:var(--shadow);
}
.conclusion-box h2{color:#fff;}
.conclusion-box p{color:rgba(255,255,255,.92);}
.conclusion-quote{
  margin-top:18px;border-top:1px solid rgba(255,255,255,.3);padding-top:18px;
  font-family:'Playfair Display',serif;font-size:1.08rem;font-weight:700;
}

/* contact */
.contact-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:28px;}
@media (max-width:760px){.contact-grid{grid-template-columns:1fr;}}
.contact-card{background:var(--paper);border:1px solid var(--rule-soft);border-radius:var(--radius);padding:30px 32px;box-shadow:var(--shadow);}
.contact-card h3{font-size:1.05rem;}
.mailbtn{
  display:inline-flex;align-items:center;gap:10px;margin-top:16px;background:var(--accent);color:#fff;
  padding:13px 22px;border-radius:999px;text-decoration:none;font-weight:700;font-family:'Playfair Display',serif;
}
.mailbtn:hover{background:var(--accent-dark);}

/* footer */
footer{border-top:1px solid var(--rule);padding:34px 0;color:var(--ink-faint);font-size:.85rem;}
footer .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

/* caution rule box reused within sections */
.rule-box{
  background:var(--status-explore-bg);border:1px solid color-mix(in srgb, var(--status-explore) 30%, transparent);
  color:var(--status-explore);border-radius:10px;padding:14px 18px;font-weight:600;font-size:.94rem;margin:16px 0;
}

@media (max-width:860px){
  .topbar-inner{flex-wrap:wrap;padding:10px 20px;}
  .topnav{order:3;width:100%;justify-content:flex-start;gap:0;overflow-x:auto;
    -webkit-overflow-scrolling:touch;flex-wrap:nowrap;padding-bottom:4px;}
  .topnav a{font-size:.8rem;padding:6px 8px;}
}
@media (max-width:600px){
  .hero{padding:56px 0 44px;}
  section{padding:44px 0;}
  .twocol{grid-template-columns:1fr;}
  .contact-grid{grid-template-columns:1fr;}
}