/* ============================ TOKENS ============================ */
/* --neon / --neon-2 / --neon-soft are set per page (project accent colour) */
:root{
  --bg:#05060a;
  --bg-2:#080a11;
  --ink:#c7d0d9;
  --ink-dim:#7e8a97;
  --ink-faint:#4a5562;
  --line:color-mix(in srgb,var(--neon) 14%,transparent);
  --line-strong:color-mix(in srgb,var(--neon) 30%,transparent);
  --panel:rgba(14,18,26,.66);
  --danger:#ff5d73;
  --maxw:1100px;
  --grain:.035;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:16px;line-height:1.72;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}

/* atmospheric layers (no grid, no glow — only grain + drifting points) */
body::after{ /* grain */
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:var(--grain);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:screen;
}
#synapse{position:fixed;inset:0;z-index:0;pointer-events:none;}

main,header,footer{position:relative;z-index:1}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}

/* ============================ HEADER / HERO ============================ */
header{padding:64px 0 30px;border-bottom:1px solid var(--line-strong)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:60px}
.brand{display:flex;align-items:center;gap:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;font-size:13px;color:var(--ink-dim);text-decoration:none;transition:color .25s}
.brand:hover{color:var(--neon)}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--neon);box-shadow:0 0 12px var(--neon),0 0 26px var(--neon);animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.78)}}

.langtoggle{display:inline-flex;border:1px solid var(--line-strong);border-radius:999px;overflow:hidden;background:rgba(0,0,0,.35);backdrop-filter:blur(6px)}
.langtoggle button{
  appearance:none;border:0;background:transparent;color:var(--ink-dim);
  font-family:inherit;font-size:12px;font-weight:700;letter-spacing:.12em;
  padding:9px 16px;cursor:pointer;transition:color .25s,background .25s;text-transform:uppercase;
}
.langtoggle button[aria-pressed="true"]{color:#021019;background:var(--neon);text-shadow:none}
.langtoggle button:not([aria-pressed="true"]):hover{color:var(--neon)}
.topbar .right{display:flex;align-items:center;gap:12px}

.eyebrow{font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:var(--neon);margin:0 0 16px}
h1.hero{
  font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;letter-spacing:-.01em;line-height:1.05;
  font-size:clamp(1.7rem,1rem + 3.1vw,3.25rem);margin:0 0 14px;color:#eef2f4;
  text-shadow:0 0 40px rgba(41,173,255,.10);white-space:nowrap;
}
@media (max-width:380px){h1.hero{white-space:normal}}
h1.hero .accent{
  color:transparent;background:linear-gradient(110deg,var(--neon),var(--neon-2));
  -webkit-background-clip:text;background-clip:text;
  position:relative;
}
.hero-sub{font-size:clamp(15px,2.2vw,19px);color:var(--ink-dim);margin:18px 0 4px}
.hero-sub b{color:var(--ink);font-weight:700}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
.tag{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--neon);border:1px solid var(--line-strong);border-radius:5px;padding:5px 10px;background:var(--neon-soft)}

/* repo / play link in topbar */
.repolink{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-dim);border:1px solid var(--line-strong);border-radius:999px;padding:8px 15px;transition:color .25s,border-color .25s,background .25s;border-bottom-color:var(--line-strong)}
.repolink:hover{color:var(--neon);border-color:rgba(41,173,255,.45);background:var(--neon-soft)}
.repolink svg{width:15px;height:15px;fill:currentColor;flex:none}

/* ============================ SECTIONS (base typography) ============================ */
section{padding:62px 0;border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:baseline;gap:18px;margin:0 0 26px}
.sec-num{font-family:ui-monospace,monospace;font-weight:800;font-size:15px;color:var(--neon);letter-spacing:.05em;flex:none;padding-top:6px}
.sec-num::before{content:"";display:inline-block;width:26px;height:1px;background:var(--neon);margin-right:12px;vertical-align:middle;opacity:.6}
h2{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;font-size:clamp(26px,4.4vw,40px);line-height:1.06;letter-spacing:-.015em;margin:0;color:#e9eef4}
h3{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;font-size:19px;letter-spacing:-.01em;color:#dfe6ec;margin:30px 0 8px}
p{margin:0 0 16px;color:var(--ink)}
strong,b{color:#eaeff4}
em{color:var(--neon-2);font-style:normal}
a{color:var(--neon-2);text-decoration:none;border-bottom:1px solid rgba(131,232,255,.3)}
a:hover{border-color:var(--neon-2)}
code{font-family:ui-monospace,monospace;font-size:.88em;color:var(--neon);background:rgba(41,173,255,.08);border:1px solid var(--line);border-radius:5px;padding:1px 6px}

ul{list-style:none;margin:0 0 18px;padding:0}
li{position:relative;padding-left:26px;margin:0 0 11px;color:var(--ink)}
li::before{content:"›";position:absolute;left:4px;top:-1px;color:var(--neon);font-weight:700}

/* callout */
.why{
  border-left:2px solid var(--neon);background:linear-gradient(90deg,var(--neon-soft),transparent 90%);
  padding:14px 20px;margin:14px 0 8px;border-radius:0 8px 8px 0;
}
.why .lbl{display:block;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--neon);margin-bottom:4px}
.why p{margin:0;color:var(--ink-dim)}

.closer{text-align:center;padding:70px 0 30px}
.closer p{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;font-size:clamp(20px,3.4vw,30px);line-height:1.3;color:#eef2f4;max-width:30ch;margin:0 auto}
.closer .em{color:var(--neon)}

footer{padding:40px 0 70px;color:var(--ink-faint);font-size:12px;text-align:center}
footer code{color:var(--ink-dim)}
footer a{color:var(--ink-dim);text-decoration:none;border-bottom:1px solid var(--line-strong)}
footer a:hover{color:var(--neon)}
footer .legalline{margin-top:14px}

/* reveal animation */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .reveal{opacity:1;transform:none;transition:none}.brand .dot{animation:none}}

/* lang visibility */
html[lang="de"] [data-lang="en"]{display:none}
html[lang="en"] [data-lang="de"]{display:none}

@media (max-width:640px){
  .topbar{margin-bottom:42px}
  section{padding:48px 0}
  .sec-head{flex-direction:column;gap:6px}
}

@media print{
  .reveal{opacity:1!important;transform:none!important}
  #synapse,.glow,body::before,body::after{display:none!important}
  .langtoggle,.repolink{display:none!important}
}