/* EKOS shared theme — "Solana-native dark neon/glass".
   Linked from every docs/*.html and docs/presentations/*.html page.
   Page-specific components stay inline in each file's own <style> block. */

:root{
  --ground:#f6f4fc;
  --ground-raised:rgba(255,255,255,0.7);
  --glass-blur:14px;
  --ink:#171326;
  --ink-soft:#5c5578;
  --rule:#e3ddf5;
  --accent-a:#7c3aed;
  --accent-b:#059669;
  --accent-gradient:linear-gradient(135deg, var(--accent-a), var(--accent-b));
  --glow-a:rgba(124,58,237,0.16);
  --glow-b:rgba(5,150,105,0.12);
  --code-bg:#130f22;
  --code-fg:#e9e4f7;
  --code-dim:#726c94;
  --code-key:#a97cf0;
  --code-str:#37c495;
  --bad:#dc2f57;
  --shadow: 0 1px 0 rgba(23,19,38,0.05);
  --glow-shadow: 0 8px 30px -10px var(--glow-a);
}
@media (prefers-color-scheme: dark){
  :root{
    --ground:#0b0a12;
    --ground-raised:rgba(255,255,255,0.045);
    --ink:#f3f1fa;
    --ink-soft:#a7a2c4;
    --rule:rgba(255,255,255,0.10);
    --accent-a:#9945ff;
    --accent-b:#14f195;
    --glow-a:rgba(153,69,255,0.35);
    --glow-b:rgba(20,241,149,0.22);
    --code-bg:#100d1c;
    --code-fg:#e9e4f7;
    --code-dim:#726c94;
    --code-key:#c9a3ff;
    --code-str:#4be3ac;
    --bad:#ff5c7a;
    --shadow: 0 1px 0 rgba(0,0,0,0.4);
    --glow-shadow: 0 8px 30px -8px var(--glow-a);
  }
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--ground);
  color:var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  scroll-snap-type: y proximity;
  overflow-x:hidden;
}
::selection{ background: var(--accent-a); color:#fff; }

.mono{ font-family: ui-monospace, "SF Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace; }

.eyebrow{
  font-family: ui-monospace,"SF Mono",Consolas,monospace;
  font-size:0.72rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  background:var(--accent-gradient);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  margin:0 0 1.1rem 0;
  display:flex;
  align-items:center;
  gap:0.6rem;
}
.eyebrow::before{
  content:"";
  width:1.6rem;height:1px;background:var(--accent-gradient);display:inline-block;
}

h1,h2,h3{ text-wrap:balance; font-weight:700; margin:0; line-height:1.1; letter-spacing:-0.01em; }

p.lede{ max-width:38rem; font-size:1.15rem; line-height:1.65; color:var(--ink-soft); margin:1.4rem 0 0 0; }

/* ---------- chips / hero diagram ---------- */
.hero-diagram{
  margin-top:3.4rem; display:flex; align-items:center; flex-wrap:wrap; gap:0.4rem;
  font-family: ui-monospace,"SF Mono",Consolas,monospace; font-size:0.72rem; color:var(--ink-soft);
}
.chip{
  border:1px solid var(--rule);
  background:var(--ground-raised);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  padding:0.42rem 0.75rem;
  border-radius:6px;
  white-space:nowrap;
  box-shadow:var(--shadow);
}
.chip.hot{ border-color:var(--accent-a); color:var(--accent-a); font-weight:600; box-shadow:var(--glow-shadow); }
.chip.bad{ border-color:var(--bad); color:var(--bad); font-weight:600; }
.sep{ color:var(--rule); }
@media (max-width:600px){
  .hero-diagram{ flex-direction:column; align-items:flex-start; }
  .hero-diagram .sep{ display:none; }
  .hero-diagram .chip{ white-space:normal; }
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:0.55rem;
  font-family: ui-monospace,"SF Mono",Consolas,monospace;
  font-size:0.92rem;
  padding:0.9rem 1.5rem;
  border-radius:8px;
  text-decoration:none;
  border:1px solid var(--rule);
  color:var(--ink);
  background:var(--ground-raised);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow:var(--shadow);
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover{ transform:translateY(-1px); border-color:var(--accent-a); box-shadow:var(--glow-shadow); }
.btn.primary{
  background:var(--accent-gradient);
  border-color:transparent;
  color:#fff;
  font-weight:600;
  box-shadow: 0 8px 30px -8px var(--glow-a);
}
.btn.primary:hover{ filter:brightness(1.08); box-shadow: 0 10px 36px -6px var(--glow-a); }

/* ---------- code blocks ---------- */
.codeblock{
  background:var(--code-bg);
  color:var(--code-fg);
  border-radius:10px;
  padding:1.3rem 1.5rem;
  font-size:0.82rem;
  line-height:1.65;
  overflow-x:auto;
  border:1px solid var(--rule);
  box-shadow: 0 8px 30px -12px rgba(0,0,0,0.5);
}
.codeblock .k{ color:var(--code-key); }
.codeblock .s{ color:var(--code-str); }
.codeblock .c{ color:var(--code-dim); font-style:italic; }
.codeblock .bad{ color:var(--bad); }
.codeblock .tag{
  display:inline-block; font-size:0.68rem; letter-spacing:0.08em; text-transform:uppercase;
  color:var(--code-dim); margin-bottom:0.8rem;
}

/* ---------- facts list ---------- */
ul.facts{ list-style:none; margin:0; padding:0; }
ul.facts li{
  padding:0.85rem 0; border-top:1px solid var(--rule);
  display:grid; grid-template-columns: 8.5rem 1fr; gap:1rem; font-size:0.98rem;
}
ul.facts li:first-child{ border-top:none; }
ul.facts li .k{
  font-family: ui-monospace,"SF Mono",Consolas,monospace; font-size:0.72rem;
  letter-spacing:0.06em; text-transform:uppercase; color:var(--accent-a); padding-top:0.15rem;
}
ul.facts li .v{ color:var(--ink-soft); line-height:1.55; }

/* ---------- flow / pipeline strip ---------- */
.flow{ display:flex; align-items:stretch; gap:0; margin-top:2.8rem; flex-wrap:wrap; font-family: ui-monospace,"SF Mono",Consolas,monospace; }
.flow .node{
  border:1px solid var(--rule); background:var(--ground-raised);
  backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur));
  padding:1.1rem 1.3rem; min-width:9rem; box-shadow:var(--shadow); border-radius:8px;
}
.flow .node.active{ border-color:var(--accent-a); box-shadow:var(--glow-shadow); }
.flow .node .l1{ font-size:0.68rem; text-transform:uppercase; letter-spacing:0.08em; color:var(--ink-soft); }
.flow .node .l2{ font-size:0.95rem; margin-top:0.35rem; font-weight:600; }
.flow .arrow{ display:flex; align-items:center; padding:0 0.6rem; color:var(--rule); font-size:1.1rem; }

/* ---------- stat grid ---------- */
.stat-grid{ display:flex; gap:1.2rem; margin-top:2.6rem; flex-wrap:wrap; }
.stat{
  border:1px solid var(--rule); background:var(--ground-raised);
  backdrop-filter: blur(var(--glass-blur)); -webkit-backdrop-filter: blur(var(--glass-blur));
  box-shadow:var(--shadow); padding:1.1rem 1.5rem; min-width:8.5rem; border-radius:8px;
}
.stat .num{
  font-family: ui-monospace,"SF Mono",Consolas,monospace; font-size:1.9rem; font-weight:700;
  background:var(--accent-gradient); -webkit-background-clip:text; background-clip:text; color:transparent;
}
.stat .num .bad{ -webkit-text-fill-color:var(--bad); color:var(--bad); }
.stat .label{ font-size:0.78rem; color:var(--ink-soft); margin-top:0.3rem; }

/* ---------- tools / comparison table ---------- */
.ttable{ width:100%; border-collapse:collapse; margin-top:2.2rem; font-size:0.86rem; }
.ttable th{
  text-align:left; font-family: ui-monospace,"SF Mono",Consolas,monospace;
  font-size:0.68rem; text-transform:uppercase; letter-spacing:0.08em;
  color:var(--ink-soft); font-weight:500;
  border-bottom:1px solid var(--rule); padding:0.6rem 0.8rem 0.6rem 0;
}
.ttable td{ border-bottom:1px solid var(--rule); padding:0.75rem 0.8rem 0.75rem 0; vertical-align:top; }
.ttable td.tool{ font-family: ui-monospace,"SF Mono",Consolas,monospace; color:var(--accent-a); white-space:nowrap; }
.ttable td.desc{ color:var(--ink-soft); }
.ttable td.bad{ color:var(--bad); font-weight:600; }
.ttable td.good{ color:var(--accent-b); font-weight:600; }

/* ---------- invariants / gains grid ---------- */
.inv-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:1.6rem; margin-top:2.6rem; }
@media (max-width:800px){ .inv-grid{ grid-template-columns:1fr; } }
.inv{ border-left:2px solid var(--accent-b); padding:0.2rem 0 0.2rem 1.2rem; }
.inv.warn{ border-left-color:var(--bad); }
.inv h3{ font-size:1.05rem; }
.inv p{ margin:0.5rem 0 0 0; color:var(--ink-soft); font-size:0.92rem; line-height:1.6; max-width:32ch; }

/* ---------- diff callouts ---------- */
.diffline{ font-family: ui-monospace,"SF Mono",Consolas,monospace; font-size:0.82rem; padding:0.15rem 0; }
.diffline.rm{ color:var(--bad); }
.diffline.add{ color:var(--accent-b); }

/* ---------- badges ---------- */
.badge{
  display:inline-block; font-family: ui-monospace,"SF Mono",Consolas,monospace; font-size:0.68rem;
  letter-spacing:0.05em; padding:0.18rem 0.55rem; border-radius:999px; margin-right:0.4rem; font-weight:600;
  border:1px solid var(--accent-b); color:var(--accent-b);
}
.badge.warn{ border-color:var(--bad); color:var(--bad); }

/* ---------- two-column / stage-head layout ---------- */
.two-col{ display:grid; grid-template-columns: 1.1fr 1fr; gap:3.5rem; margin-top:2.6rem; align-items:start; }
@media (max-width:900px){ .two-col{ grid-template-columns:1fr; } }
.stage-head{ display:flex; align-items:baseline; gap:1rem; flex-wrap:wrap; }
.stage-head h2{ font-size:clamp(1.8rem,3.4vw,2.6rem); }

/* ---------- deck scaffolding (scroll-snap slide decks) ---------- */
section.slide{
  min-height:100svh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding: 6rem 8vw;
  scroll-snap-align:start;
  position:relative;
  border-bottom:1px solid var(--rule);
}
section.slide:last-child{ border-bottom:none; }

.stage-num{
  position:absolute;
  top:3.2rem; right:8vw;
  font-family: ui-monospace,"SF Mono",Consolas,monospace;
  font-size:0.85rem;
  color:var(--ink-soft);
  letter-spacing:0.08em;
}

.hero{
  align-items:flex-start;
  background:
    radial-gradient(ellipse 60% 50% at 85% 8%, var(--glow-a), transparent 70%),
    radial-gradient(ellipse 50% 40% at 10% 90%, var(--glow-b), transparent 70%),
    var(--ground);
}
.hero h1{ font-size: clamp(2.4rem, 6vw, 4.6rem); max-width: 26ch; }
.hero .arrow-word{
  background:var(--accent-gradient); -webkit-background-clip:text; background-clip:text; color:transparent;
  font-style:normal; font-weight:700;
}
.hero .byline{
  margin-top:2.6rem; display:flex; align-items:center; gap:0.9rem;
  font-family: ui-monospace,"SF Mono",Consolas,monospace; font-size:0.85rem; color:var(--ink-soft);
}
.hero .byline .dot{ width:6px;height:6px;border-radius:50%;background:var(--accent-b); }
.hero .byline a{ color:var(--accent-a); text-decoration:none; }
.hero .byline a:hover{ text-decoration:underline; }

.cta{
  align-items:center; text-align:center;
  background:
    radial-gradient(ellipse 70% 60% at 50% 0%, var(--glow-a), transparent 70%),
    var(--ground);
}
.cta h2{ font-size:clamp(2rem,4.4vw,3.2rem); max-width:26ch; }
.cta .codeblock{ margin-top:2.4rem; text-align:left; max-width:38rem; width:100%; }
.cta .fineprint{ margin-top:2rem; font-size:0.82rem; color:var(--ink-soft); font-family: ui-monospace,"SF Mono",Consolas,monospace; }
.cta .fineprint a{ color:var(--accent-a); text-decoration:none; }
.cta .fineprint a:hover{ text-decoration:underline; }

/* ---------- progress rail ---------- */
.rail{ position:fixed; right:1.4rem; top:50%; transform:translateY(-50%); display:flex; flex-direction:column; gap:0.55rem; z-index:20; }
.rail a{ width:7px;height:7px;border-radius:50%; background:var(--rule); border:none; padding:0; cursor:pointer; transition:background 0.2s ease, transform 0.2s ease; }
.rail a.current{ background:var(--accent-a); transform:scale(1.4); box-shadow:0 0 8px var(--glow-a); }
@media (max-width:700px){ .rail{ display:none; } }

@media (prefers-reduced-motion:no-preference){
  section.slide{ animation: rise 0.7s ease both; animation-timeline: view(); animation-range: entry 0% cover 30%; }
  @keyframes rise{ from{ opacity:0; transform:translateY(14px);} to{ opacity:1; transform:none; } }
}