/* ============================ TOKENS ============================ */
:root{
  --bg:#05060a;
  --bg-2:#080a11;
  --ink:#c7d0d9;
  --ink-dim:#7e8a97;
  --ink-faint:#4a5562;
  --neon:#7db8ff;          /* soft pale blue */
  --neon-2:#bcdcff;        /* lighter blue highlight */
  --neon-soft:rgba(125,184,255,.12);
  --line:rgba(120,170,200,.10);
  --line-strong:rgba(120,170,200,.22);
  --panel:rgba(14,18,26,.66);
  --danger:#ff5d73;
  --maxw:1280px;
  --grain:.035;
}

*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}
/* keep the page scrollable but hide the scrollbar chrome */
html{scrollbar-width:none;-ms-overflow-style:none}
html::-webkit-scrollbar{display:none}
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;
  display:flex;flex-direction:column;min-height:100%;
}

/* ============================ COSMOS BACKDROP ============================ */
/* deep-space base: a dark violet/blue wash so the black never reads as flat */
.cosmos{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(70,110,220,.20), transparent 60%),
    radial-gradient(90% 60% at 12% 8%,  rgba(140,80,220,.16), transparent 65%),
    radial-gradient(80% 60% at 88% 22%, rgba(30,180,220,.13), transparent 65%),
    radial-gradient(70% 50% at 70% 95%, rgba(190,70,160,.10), transparent 70%),
    linear-gradient(180deg,#070912 0%,#05060d 45%,#04050a 100%);
}
/* slow drifting nebula clouds on top of the wash */
.nebula{
  position:fixed;inset:-15%;z-index:0;pointer-events:none;
  background:
    radial-gradient(closest-side at 25% 30%, color-mix(in srgb,var(--neon) 55%,transparent), transparent 100%),
    radial-gradient(closest-side at 78% 18%, rgba(168,85,247,.42), transparent 100%),
    radial-gradient(closest-side at 62% 72%, rgba(56,189,248,.30), transparent 100%),
    radial-gradient(closest-side at 15% 78%, rgba(236,72,153,.24), transparent 100%);
  background-size:60% 55%,52% 48%,58% 52%,46% 44%;
  background-repeat:no-repeat;
  filter:blur(60px) saturate(130%);
  opacity:.55;mix-blend-mode:screen;
  animation:nebulaDrift 48s ease-in-out infinite alternate;
}
@keyframes nebulaDrift{
  0%  {transform:translate3d(0,0,0) scale(1)}
  50% {transform:translate3d(2.5%,-2%,0) scale(1.06)}
  100%{transform:translate3d(-2%,2.5%,0) scale(1.03)}
}

/* perspective grid — a horizon plane receding into the distance */
body::before{
  content:"";position:fixed;left:-50%;right:-50%;bottom:-10%;height:70vh;z-index:0;pointer-events:none;
  --grid-line:color-mix(in srgb,var(--neon) 30%,transparent);
  background-image:
    linear-gradient(var(--grid-line) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);
  background-size:64px 64px;
  transform:perspective(340px) rotateX(66deg);
  transform-origin:50% 100%;
  mask-image:linear-gradient(to top,#000 0%,rgba(0,0,0,.55) 35%,transparent 78%);
  opacity:.5;
}
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;}
/* soft core bloom at the top — a distant galactic centre, kept subtle */
.glow{
  position:fixed;left:50%;top:-300px;transform:translateX(-50%);
  width:1500px;height:660px;z-index:0;pointer-events:none;
  background:
    radial-gradient(50% 50% at 50% 50%,color-mix(in srgb,var(--neon) 55%,transparent),transparent 68%),
    radial-gradient(30% 38% at 50% 55%,rgba(255,255,255,.18),transparent 75%);
  filter:blur(44px);opacity:.26;
  animation:corePulse 11s ease-in-out infinite alternate;
}
@keyframes corePulse{
  0%  {opacity:.2;transform:translateX(-50%) scale(1)}
  100%{opacity:.32;transform:translateX(-50%) scale(1.05)}
}
@media (prefers-reduced-motion:reduce){
  .nebula,.glow{animation:none}
}

header,main,footer{position:relative;z-index:1}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px;width:100%}

/* ============================ NAV (persistent) ============================ */
header{padding:24px 0 22px;border-bottom:1px solid var(--line-strong);backdrop-filter:blur(8px);background:rgba(5,6,10,.55);position:sticky;top:0;z-index:5}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:13px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;font-size:13px;color:var(--ink-dim);cursor:pointer;background:none;border:0;font-family:inherit;padding:0;text-decoration:none}
.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)}}

/* category badges (in hero) */
.cats{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.cat{
  appearance:none;font-family:ui-monospace,Menlo,Consolas,monospace;cursor:pointer;
  font-size:13px;letter-spacing:.08em;text-transform:uppercase;font-weight:600;
  color:var(--ink);border:1px solid rgba(120,170,200,.32);border-radius:9px;
  padding:9px 18px;background:rgba(255,255,255,.04);
  transition:color .25s,border-color .25s,background .25s,transform .25s,box-shadow .25s;
}
.cat:hover{color:var(--neon);border-color:var(--neon);transform:translateY(-2px);box-shadow:0 0 26px -8px var(--neon)}
.cat[aria-pressed="true"]{color:#021019;background:var(--neon);border-color:var(--neon);box-shadow:0 0 28px -10px var(--neon)}

.langtoggle{display:inline-flex;border:1px solid var(--line-strong);border-radius:999px;overflow:hidden;background:rgba(0,0,0,.35)}
.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:8px 14px;cursor:pointer;transition:color .25s,background .25s;text-transform:uppercase;
}
.langtoggle button[aria-pressed="true"]{color:#021019;background:var(--neon)}
.langtoggle button:not([aria-pressed="true"]):hover{color:var(--neon)}
.topbar .right{display:flex;align-items:center;gap:12px;flex-wrap:wrap}

/* ============================ MAIN FRAME ============================ */
main{flex:1 0 auto;padding:38px 0 60px;display:flex;flex-direction:column}

/* breadcrumb shows when a page is open */
.crumb{display:none;align-items:center;gap:10px;margin-bottom:22px;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-dim)}
.crumb.show{display:flex}
.back{
  appearance:none;font-family:inherit;cursor:pointer;text-decoration:none;
  display:inline-flex;align-items:center;gap:8px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;font-size:12px;
  color:var(--ink-dim);border:1px solid var(--line-strong);border-radius:999px;padding:8px 15px;background:rgba(0,0,0,.3);
  transition:color .25s,border-color .25s,background .25s;
}
.back:hover{color:var(--neon);border-color:rgba(41,173,255,.45);background:var(--neon-soft)}
.crumb .sep{color:var(--ink-faint)}
.crumb .here{color:var(--neon);font-weight:700}

/* index view (lede + cards) keeps its original width even though --maxw
   was widened for the project viewer/iframe */
.indexview{max-width:1040px;margin:0 auto}

/* eyebrow + heading on the index view */
.lede{margin-bottom:30px}
.lede .eyebrow{font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:var(--neon);margin:0 0 16px;text-align:center}
.lede h1{
  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;text-align:center;
}
@media (max-width:380px){.lede h1{white-space:normal}}
.lede h1 .accent{color:transparent;background:linear-gradient(110deg,var(--neon),var(--neon-2));-webkit-background-clip:text;background-clip:text}
.lede p{color:var(--ink-dim);margin:0;text-align:center}

/* card grid */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.card{
  text-align:left;font-family:inherit;cursor:pointer;color:inherit;
  --ac:var(--neon);--ac2:var(--neon-2);--ac-soft:var(--neon-soft);--ac-line:rgba(41,173,255,.4);--ac-glow:rgba(41,173,255,.55);
  border:1px solid var(--ac-line);border-radius:16px;overflow:hidden;
  background:var(--panel);backdrop-filter:blur(7px);padding:0;
  display:flex;flex-direction:column;
  transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .35s,box-shadow .35s;
}
.card:hover{transform:translateY(-4px);border-color:var(--ac);box-shadow:0 0 34px -10px var(--ac-glow),0 0 70px -30px var(--ac-glow)}
.card .cardtags{display:flex;flex-wrap:wrap;gap:7px;padding:14px 16px 0}
.card .cardtags span{font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--ac);border:1px solid var(--ac-line);background:var(--ac-soft);border-radius:6px;padding:4px 9px}
.card .cardtags span:first-child{color:#04130c;background:var(--ac);border-color:var(--ac)}
.card .thumb{position:relative;aspect-ratio:16/9;background:#020306;overflow:hidden;margin:12px 16px 0;border:1px solid var(--line);border-radius:9px}
.card .thumb img{width:100%;height:100%;object-fit:cover;display:block;image-rendering:pixelated}
.card .body{padding:18px 20px 20px}
.card .body h3{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;font-size:19px;letter-spacing:-.01em;color:var(--ac);margin:0 0 7px}
.card .body p{margin:0;color:var(--ink-dim);font-size:14px;line-height:1.6}
.card .cta{margin-top:14px;display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.1em;text-transform:uppercase;font-weight:700;color:var(--ac)}
.card .cta svg{width:13px;height:13px;fill:currentColor;transition:transform .3s}
.card:hover .cta svg{transform:translateX(4px)}

.empty{color:var(--ink-faint);font-size:14px;padding:40px 0}

/* page viewer (iframe) */
.viewer{display:none;flex:1 0 auto;flex-direction:column}
.viewer.show{display:flex}
.viewer .framebox{
  /* --frame-accent is pinned by JS to the open project's accent colour */
  --frame-accent:var(--neon);
  /* fine accent edge (mid strength) with a soft surrounding glow */
  border:1px solid color-mix(in srgb,var(--frame-accent) 75%,transparent);border-radius:16px;overflow:hidden;
  background:#020306;
  box-shadow:0 0 50px -22px var(--frame-accent),0 24px 80px -46px var(--frame-accent);
  transition:border-color .5s ease,box-shadow .5s ease;
}
.viewer iframe{width:100%;height:72vh;border:0;display:block;background:var(--bg)}

/* reveal */
.js .reveal{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s 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}

footer{flex-shrink:0;padding:26px 0 40px;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)}

@media (max-width:640px){
  .topbar{gap:14px}
  main{padding:28px 0 48px}
}