/* Kryst – Farbthema aus dem Logo (Eisblau auf Nachtblau) */
:root{
  color-scheme: dark;
  --bg:#020a17;
  --bg-2:#06142b;
  --panel:rgba(10,30,62,.55);
  --line:rgba(143,211,255,.22);
  --line-strong:rgba(143,211,255,.5);
  --fg:#e8f3ff;
  --muted:#9fb6d1;
  --ice:#8fd3ff;
  --blue:#2f9bff;
  --blue-deep:#0e6fd0;
  --glow:0 0 24px rgba(79,170,255,.35);
  --radius:18px;
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}
*{box-sizing:border-box}
html{background:var(--bg)}
body{
  margin:0;color:var(--fg);
  font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:
    radial-gradient(900px 600px at 50% -10%, rgba(47,155,255,.18), transparent 70%),
    radial-gradient(700px 500px at 100% 100%, rgba(14,111,208,.12), transparent 70%),
    var(--bg);
  min-height:100vh;
}
a{color:var(--ice)}
a:hover{color:#fff}
code{background:rgba(143,211,255,.1);border:1px solid var(--line);border-radius:6px;padding:0 5px;font-size:.92em}

/* Kopfzeile */
.top{max-width:1040px;margin:0 auto;padding:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;color:var(--fg);text-decoration:none;font-weight:700;letter-spacing:.3px}
.brand img{width:36px;height:36px;border-radius:10px;box-shadow:var(--glow)}
nav{display:flex;flex-wrap:wrap;gap:4px 16px;font-size:.95rem}
nav a{text-decoration:none;color:var(--muted)}
nav a:hover,nav a[aria-current]{color:var(--ice)}

/* Fenster und Kacheln: abgerundet, Rahmen, Splitter links unten + rechts oben */
.panel,.card{
  position:relative;
  background:linear-gradient(160deg, rgba(20,52,100,.55), var(--panel));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 10px 30px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.05);
}
/* Splitter: beide Ecken in einem Pseudo-Element (::after) */
.panel::after,.card::after{
  content:"";position:absolute;inset:-11px;pointer-events:none;
  background:var(--shard) left bottom/30px 30px no-repeat, var(--shard-r) right top/30px 30px no-repeat;
  filter:drop-shadow(0 0 6px rgba(143,211,255,.55));
}
/* Karte: Aufleuchten + Lichtschimmer mit Diamant-Facetten beim Drueberfahren */
.card{
  padding:22px 20px;
  background:
    linear-gradient(115deg, transparent 40%, rgba(255,255,255,.10) 47%, rgba(200,235,255,.2) 50%, rgba(255,255,255,.10) 53%, transparent 60%) no-repeat,
    linear-gradient(160deg, rgba(20,52,100,.55), var(--panel));
  background-size:260% 100%, 100% 100%;
  background-position:110% 0, 0 0;
  transition:border-color .2s, box-shadow .2s, transform .2s;
}
.card>*{position:relative;z-index:1}
/* Facettenmuster, nur im wandernden Lichtstreifen sichtbar */
.card::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:var(--facet) 0 0/160px 160px repeat;
  -webkit-mask-image:linear-gradient(115deg, transparent 36%, #000 48%, #000 52%, transparent 64%);
          mask-image:linear-gradient(115deg, transparent 36%, #000 48%, #000 52%, transparent 64%);
  -webkit-mask-size:260% 100%; mask-size:260% 100%;
  -webkit-mask-repeat:no-repeat; mask-repeat:no-repeat;
  -webkit-mask-position:110% 0; mask-position:110% 0;
  opacity:0;mix-blend-mode:screen;
}
.card:hover,.card:focus-within,.card.shine{border-color:var(--line-strong);box-shadow:0 10px 30px rgba(0,0,0,.35), var(--glow);transform:translateY(-2px);animation:schimmer 1.1s ease-in-out 1}
.card:hover::before,.card:focus-within::before,.card.shine::before{animation:facetten 1.1s ease-in-out 1}
@keyframes schimmer{from{background-position:110% 0,0 0}to{background-position:-10% 0,0 0}}
@keyframes facetten{
  0%{opacity:.75;-webkit-mask-position:110% 0;mask-position:110% 0}
  90%{opacity:.75}
  100%{opacity:0;-webkit-mask-position:-10% 0;mask-position:-10% 0}
}
@media (prefers-reduced-motion:reduce){.card,.card:hover,.card.shine,.card::before{animation:none!important;transform:none}}

/* Klang-Schalter */
.klang{background:none;border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:3px 12px;font:inherit;font-size:.85rem;cursor:pointer}
.klang[aria-pressed="true"]{color:var(--ice);border-color:var(--line-strong);box-shadow:var(--glow)}
.card h3{margin:0 0 6px;font-size:1.1rem;color:#fff}
.card p{margin:0;color:var(--muted)}
.tag{display:inline-block;font-size:.75rem;font-weight:600;padding:1px 9px;border-radius:999px;border:1px solid var(--line-strong);color:var(--ice);margin-bottom:10px}
.tag.soon{border-color:var(--line);color:var(--muted)}

/* Schaltflächen */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:12px;font-weight:600;text-decoration:none;border:1px solid var(--line-strong)}
.btn.primary{background:linear-gradient(135deg,var(--blue),var(--blue-deep));color:#fff;border-color:transparent;box-shadow:var(--glow)}
.btn.primary:hover{filter:brightness(1.12);color:#fff}
.btn.ghost{color:var(--ice)}
.btn.ghost:hover{background:rgba(143,211,255,.08)}

/* Startseite */
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
.hero{text-align:center;padding:24px 0 48px}
.hero img{width:min(300px,70vw);height:auto;display:block;margin:0 auto 8px;
  -webkit-mask-image:radial-gradient(circle,#000 58%,transparent 71%);mask-image:radial-gradient(circle,#000 58%,transparent 71%)}
.hero h1{font-size:clamp(2rem,6vw,3rem);margin:0;letter-spacing:.5px;text-shadow:0 0 28px rgba(79,170,255,.45)}
.hero .lead{max-width:600px;margin:12px auto 28px;color:var(--muted);font-size:1.1rem}
.actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
section{padding:28px 0}
section>h2{font-size:1.5rem;margin:0 0 20px;text-align:center}
.grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.steps{counter-reset:s}
.steps .card h3::before{counter-increment:s;content:counter(s);display:inline-grid;place-items:center;width:28px;height:28px;margin-right:10px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--blue-deep));font-size:.9rem;box-shadow:var(--glow)}
.note{text-align:center;color:var(--muted);margin-top:16px}

/* Textseiten (Impressum, Datenschutz, ...) */
main.doc{max-width:800px;margin:8px auto 48px;padding:28px 24px}
@media (max-width:520px){main.doc{margin:8px 12px 40px;padding:22px 16px}}
main.doc h1{font-size:1.8rem;margin:0 0 4px}
main.doc h2{font-size:1.15rem;margin:30px 0 8px;padding-top:12px;border-top:1px solid var(--line);color:#fff}
main.doc h3{font-size:1rem;margin:18px 0 4px;color:var(--ice)}
main.doc ul{padding-left:20px}
.stand{color:var(--muted);margin:0 0 20px}

footer.site{max-width:1040px;margin:24px auto 0;padding:20px 16px 36px;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
footer.site nav{font-size:.9rem}

/* Sprachwahl (Flagge oben rechts) */
.top .brand{order:1}
.top nav{order:2;align-items:center}
.rechts{order:3;display:flex;align-items:center;gap:10px}
.lang{position:relative}
.lang summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:6px;padding:4px 9px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.8rem;font-weight:600;letter-spacing:.4px;user-select:none}
.lang summary::-webkit-details-marker{display:none}
.lang summary:hover,.lang[open] summary,.lang summary:focus-visible{border-color:var(--line-strong);color:var(--ice);box-shadow:var(--glow);outline:none}
.lang svg{display:block;width:21px;height:14px;border-radius:2px;box-shadow:0 0 0 1px rgba(255,255,255,.25)}
.lang ul{position:absolute;right:0;top:calc(100% + 8px);margin:0;padding:6px;list-style:none;min-width:150px;z-index:20;
  background:linear-gradient(160deg,#0b2347,var(--bg-2));border:1px solid var(--line-strong);border-radius:12px;box-shadow:0 12px 30px rgba(0,0,0,.5),var(--glow)}
.lang li a{display:flex;align-items:center;gap:10px;padding:7px 10px;border-radius:8px;color:var(--fg);text-decoration:none;white-space:nowrap;font-size:.95rem}
.lang li a:hover,.lang li a:focus-visible{background:rgba(143,211,255,.12);color:var(--ice);outline:none}
.lang li a[aria-current]{color:var(--ice)}
.lang li a[aria-current]::after{content:"✓";margin-left:auto;color:var(--ice)}
@media (max-width:640px){
  .rechts{order:2;margin-left:auto}
  .top nav{order:3;flex-basis:100%}
}
/* Hinweis auf englischen Rechtsseiten */
.hinweis{border:1px solid var(--line-strong);border-radius:12px;padding:10px 14px;margin:0 0 20px;background:rgba(143,211,255,.06);color:var(--muted);font-size:.92rem}