/* Shared dark palette. The link media is controlled by site-theme.js. */
:root{color-scheme:dark;--ink:#e7f2f4;--muted:#a8bac1;--paper:#13242c;--canvas:#09161d;--line:#29414a;--brand:#4fd1c5;--brand-dark:#75ded5;--accent:#ffad79;--shadow:0 18px 50px rgba(0,0,0,.34)}
  body{background:radial-gradient(circle at 12% 0%,rgba(30,160,151,.16),transparent 28rem),linear-gradient(180deg,#0d1d25,var(--canvas))}
  .site-header{background:rgba(10,25,32,.9);border-bottom-color:rgba(41,65,74,.9)}
  .brand-mark{color:#062127;background:linear-gradient(145deg,#58d8cc,#20a6a0);box-shadow:0 8px 24px rgba(0,0,0,.3)}
  .nav-links a:hover,.nav-links a[aria-current="page"]{color:#9be9e2;background:#15343b}
  .button{background:#13262f;border-color:var(--line);color:var(--ink);box-shadow:0 5px 18px rgba(0,0,0,.16)}
  .button:hover{border-color:#42777b;color:#8fe8df}
  .button.primary{color:#031d22;background:linear-gradient(135deg,#57d5c9,#28aaa6);box-shadow:0 12px 30px rgba(0,0,0,.28)}
  .hero-art:before{background:linear-gradient(145deg,rgba(47,194,181,.18),rgba(21,83,102,.11))}
  .section.alt{background:rgba(15,33,41,.72)}
  .card,.feature{background:rgba(18,39,48,.92);border-color:var(--line);box-shadow:0 12px 38px rgba(0,0,0,.14)}
  .card-icon{color:#9be9e2;background:#173b40}
  .callout{background:linear-gradient(135deg,#0c686d,#073d4e)}
  .site-footer{background:rgba(10,25,32,.82);border-color:var(--line)}
  body>#navwrap,body>#sidenav,body>#content{background:rgba(16,35,43,.94);border-color:var(--line);box-shadow:var(--shadow)}
  #topnav li a:hover,#sidenav li a:hover{color:#9be9e2;background:#15343b}
  #content img[src*="impressum"]{filter:invert(1) brightness(1.7)}