:root{
  color-scheme:dark;
  --bg:#0b1220; --text:#e5e7eb; --muted:#9ca3af;
  --card:#111827; --border:#1f2937; --chip:#0f172a; --accent:#06b6d4; --halo:#0b1220;
  --link:#60a5fa; --link-hover:#93c5fd;
}
html[data-theme="light"]{
  color-scheme:light;
  --bg:#ffffff; --text:#0f172a; --muted:#475569;
  --card:#ffffff; --border:#e5e7eb; --chip:#f8fafc; --accent:#06b6d4; --halo:#ffffff;
  --link:#0ea5e9; --link-hover:#0284c7;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:15px/1.6 system-ui, Segoe UI, Roboto, Arial, sans-serif;background:var(--bg);color:var(--text)}
main{max-width:1200px;margin:0 auto;padding:16px}
header,footer{width:100%}
a{color:var(--link);text-underline-offset:2px}
a:hover{color:var(--link-hover)}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:0 10px 30px rgba(0,0,0,.20);padding:16px}
.container{max-width:1200px;margin:0 auto;padding:16px}
h1,h2,h3{line-height:1.3}

/* tables */
table{width:100%;border-collapse:collapse}
th,td{border:1px solid var(--border);padding:8px}
th{background:var(--chip)}

code,kbd{background:var(--chip);border:1px solid var(--border);border-radius:6px;padding:2px 6px}

.mt-2{margin-top:8px}.mt-6{margin-top:24px}
.badge{display:inline-block;padding:.25rem .5rem;border:1px solid var(--border);border-radius:999px;background:var(--chip);color:var(--text);opacity:.85;font-size:12px}
.note{border-left:3px solid var(--accent);padding:10px 12px;background:var(--chip);border-radius:8px}
.ref{font-size:13px;color:var(--muted)}

/* header/footer */
.uske-header{position:sticky;top:0;z-index:1000;backdrop-filter:saturate(1.2) blur(10px);background:color-mix(in oklab, var(--chip) 80%, transparent 20%);border-bottom:1px solid var(--border)}
.uske-header-inner{max-width:1200px;margin:0 auto;padding:10px 16px;display:flex;gap:14px;align-items:center}
.uske-logo{height:28px;width:auto;display:block}
.uske-title{font-weight:600;letter-spacing:.2px}
.uske-title a{text-decoration:none;color:var(--text)}
.uske-title small{color:var(--muted);font-weight:400;margin-left:8px}
.uske-nav{margin-left:auto;display:flex;gap:8px;align-items:center}
.uske-chip{padding:6px 10px;border:1px solid var(--border);border-radius:999px;color:var(--muted);background:var(--chip)}
.uske-search{display:flex;align-items:center;gap:8px;background:color-mix(in oklab, var(--chip) 85%, transparent 15%);border:1px solid var(--border);padding:6px 10px;border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.2)}
.uske-search input{all:unset;color:var(--text);width:260px}
.uske-search kbd{background:var(--chip);border:1px solid var(--border);color:var(--muted);border-radius:6px;padding:0 6px;font-size:12px}
.theme-toggle, .lang-toggle{cursor:pointer;border:1px solid var(--border);background:var(--chip);color:var(--text);border-radius:10px;padding:6px 10px;display:flex;align-items:center;gap:8px}
.uske-footer{margin-top:60px;border-top:1px solid var(--border);background:color-mix(in oklab, var(--chip) 70%, transparent 30%)}
.uske-footer-inner{max-width:1200px;margin:0 auto;padding:20px 16px;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* SVG graph */
svg[role="graph"]{max-width:100%;height:auto;display:block}
svg a:hover path, svg a:hover text{filter:drop-shadow(0 0 10px var(--accent))}
.graph-label{font-size:12px;fill:var(--text);paint-order:stroke fill;stroke:var(--halo);stroke-width:3px}
.edge{stroke:#22d3ee;stroke-width:2}
.hidden-edge{display:none}
.filter-bar{display:flex;gap:8px;flex-wrap:wrap;margin-left:12px}
.filter-bar label{display:flex;align-items:center;gap:6px;background:var(--chip);border:1px solid var(--border);padding:4px 8px;border-radius:8px;color:var(--muted)}

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