:root{
  --bg:#f4f5f3; --surface:#ffffff; --ink:#1c2a2e; --muted:#56656a; --line:#d9dedc;
  --accent:#1f5b70; --accent-ink:#ffffff; --gold:#9a7a35; --band:#e7ecea;
  --display:"Spectral",Georgia,"Times New Roman",serif;
  --body:"Source Sans 3","Segoe UI",system-ui,-apple-system,sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#121a1d; --surface:#18232a; --ink:#e6ecea; --muted:#a3b1b4; --line:#2b3a40;
  --accent:#7cc0d6; --accent-ink:#0e1a1e; --gold:#d3b26a; --band:#1a272d; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#121a1d; --surface:#18232a; --ink:#e6ecea; --muted:#a3b1b4; --line:#2b3a40;
  --accent:#7cc0d6; --accent-ink:#0e1a1e; --gold:#d3b26a; --band:#1a272d; color-scheme:dark}


/* ================= Kopfzeile – gemeinsam für alle Seiten =================
   Bleibt beim Scrollen oben stehen. Am Handy: eine schmale Zeile,
   Sprachwahl steckt dann im Menü. */
*,*::before,*::after{box-sizing:border-box}
body{margin:0}
html{scrollbar-gutter:stable;overflow-y:scroll}
html{scroll-padding-top:calc(var(--kopf,76px) + 12px)}
header.kopf{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;padding-top:env(safe-area-inset-top,0px)}
header.kopf .wrap{max-width:1200px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
header.kopf .head{display:flex;align-items:center;gap:20px;padding-block:12px}
header.kopf .brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);min-width:0}
header.kopf .mark{width:42px;height:42px;flex:none;display:block;fill:var(--accent)}
/* Logo optisch ausgleichen: die Bücher tragen das Gewicht, daher etwas größer und höher */
header.kopf .mark{width:48px;height:48px;margin-block:-3px;transform:translateY(-6px)}
header.kopf .brand b{display:block;font-family:var(--display);font-weight:600;font-size:18px;line-height:1.2;white-space:nowrap}
header.kopf .brand small{display:block;color:var(--muted);font-family:var(--display);font-style:italic;font-size:14px;letter-spacing:.01em;white-space:nowrap}
header.kopf nav{margin-left:auto;min-width:0}
header.kopf nav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px;flex-wrap:nowrap}
header.kopf nav a{display:block;padding:8px 11px;border-radius:6px;text-decoration:none;color:var(--ink);font-weight:600;font-size:15px;white-space:nowrap}
header.kopf nav a:hover{background:var(--band)}
header.kopf nav a[aria-current="page"]{color:var(--accent)}
header.kopf nav a.member{background:var(--accent);color:var(--accent-ink)}
header.kopf nav a.member:hover{background:var(--accent);opacity:.9}
header.kopf .tools{display:flex;align-items:center;gap:8px;flex:none}
header.kopf .langs{display:flex;border:1px solid var(--line);border-radius:6px;overflow:hidden;flex:none}
header.kopf .langs button{background:none;border:0;color:var(--muted);font:inherit;font-size:13px;font-weight:700;letter-spacing:.06em;padding:6px 10px;cursor:pointer}
header.kopf .langs button[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}
header.kopf .langs.im-menue{display:none}
header.kopf .menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--ink);border-radius:6px;padding:7px 12px;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}
@media (max-width:1180px){
  header.kopf .menu-btn{display:block}
  header.kopf .head{flex-wrap:wrap}
  header.kopf .tools{margin-left:auto}
  header.kopf nav{display:none;width:100%;order:3;margin-left:0;max-height:calc(100vh - 80px);overflow-y:auto}
  header.kopf nav.open{display:block}
  header.kopf nav ul{flex-direction:column;padding-bottom:8px}
}
@media (max-width:720px){header.kopf .brand small{display:none}header.kopf .mark{width:40px;height:40px;margin-block:0;transform:translateY(-4px)}}
@media (max-width:560px){
  header.kopf .head{gap:10px;padding-block:10px}
  header.kopf .mark{width:36px;height:36px}
  header.kopf .brand{gap:10px}
  header.kopf .brand b{font-size:16px}
  header.kopf .tools .langs{display:none}
  header.kopf .langs.im-menue{display:flex;align-self:flex-start;margin:4px 0 12px}
  header.kopf .menu-btn{padding:7px 10px}
}
@media (max-width:400px){
  header.kopf .menu-btn{font-size:0;padding:6px 11px;line-height:1}
  header.kopf .menu-btn::before{content:"\2630";font-size:20px}
}

/* Fußzeile der Unterseiten */
footer.fuss{border-top:1px solid var(--line);background:var(--surface)}
footer.fuss .wrap{max-width:1200px;margin:0 auto;padding:24px max(16px,env(safe-area-inset-left,0px));display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
footer.fuss a{color:var(--muted)}