/* Energiebewertung leicht gemacht – Georg Holzknecht
   Farbwelt abgeleitet vom Buchcover (Nebula-Violett, Energiewellen, Label-Icons) */
:root{
  --deep:#160a2e;
  --deep-2:#25105a;
  --violet:#5b2ea6;
  --violet-soft:#8b5cf6;
  --magenta:#c026d3;
  --ember:#f59e0b;
  --flame:#ef4444;
  --regen:#16a34a;
  --co2:#2563eb;
  --sys:#f97316;
  --degen:#dc2626;
  --ink:#f4f1fb;
  --muted:#b7abd6;
  --card:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.14);
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);line-height:1.65;
  font-family:"Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,Arial,sans-serif;
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(139,92,246,.42), transparent 60%),
    radial-gradient(900px 520px at 92% 8%, rgba(192,38,211,.30), transparent 62%),
    radial-gradient(1000px 700px at 50% 110%, rgba(245,158,11,.16), transparent 60%),
    linear-gradient(160deg,#160a2e 0%, #1d0d40 45%, #120826 100%);
  background-attachment:fixed;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;opacity:.30;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:46px 40px;
  mask-image:radial-gradient(900px 460px at 70% 0%,#000 0%,transparent 75%);
  -webkit-mask-image:radial-gradient(900px 460px at 70% 0%,#000 0%,transparent 75%);
}
/* Cover-Grafiken: Wabengitter oben, Energiewelle als Grundton */
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:url("img/mesh.jpg"),url("img/wave.jpg");
  background-repeat:no-repeat,no-repeat;
  background-position:top center,bottom center;
  background-size:100% auto,100% auto;
  opacity:.32;mix-blend-mode:screen;
}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px;position:relative;z-index:1}
a{color:#d8c7ff}

/* ---------- Navigation (Dropdown) ---------- */
.nav{position:sticky;top:0;z-index:40;backdrop-filter:blur(12px);
  background:rgba(18,8,38,.86);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:14px;padding-top:10px;padding-bottom:10px}
.brand{font-weight:800;letter-spacing:.02em;text-decoration:none;color:#fff;font-size:15px;line-height:1.2}
.brand small{display:block;font-weight:500;font-size:11px;color:var(--muted);letter-spacing:.14em;text-transform:uppercase}
.menu{position:relative;margin-left:auto}
.menubtn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;cursor:pointer;
  border:1px solid var(--line);background:linear-gradient(135deg,var(--violet),var(--magenta));
  color:#fff;font:inherit;font-size:14px;font-weight:700}
.menubtn .caret{transition:.2s}
.menubtn[aria-expanded="true"] .caret{transform:rotate(180deg)}
.menulist{list-style:none;margin:0;padding:6px;position:absolute;right:0;top:calc(100% + 10px);min-width:210px;
  background:rgba(24,11,50,.98);border:1px solid var(--line);border-radius:14px;
  box-shadow:0 24px 50px -20px rgba(0,0,0,.9);display:none;z-index:50}
.menulist.open{display:block}
.menulist a.link{display:block;padding:10px 14px;border-radius:10px;text-decoration:none;
  color:var(--muted);font-weight:600;font-size:14.5px;transition:.15s}
.menulist a.link:hover{color:#fff;background:rgba(255,255,255,.10)}
.menulist a.link.active{color:#fff;background:linear-gradient(135deg,var(--violet),var(--magenta))}

/* ---------- Typographie & Struktur ---------- */
section{padding:40px 0}
section + section{padding-top:8px}
h1{font-size:clamp(27px,4.4vw,46px);line-height:1.1;margin:10px 0 12px;font-weight:800;letter-spacing:-.02em;text-transform:uppercase}
h1 span{display:block;font-weight:500;text-transform:none;font-size:.52em;letter-spacing:0;color:#e6dcff;margin-top:8px}
h2{font-size:clamp(21px,3vw,30px);margin:0 0 8px;font-weight:800;letter-spacing:-.01em}
h3{margin:0 0 6px;font-size:17px}
.lead{color:var(--muted);max-width:74ch;margin:0 0 18px;font-size:16.5px}
.eyebrow{display:inline-block;padding:6px 14px;border-radius:999px;font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;border:1px solid var(--line);background:rgba(255,255,255,.07);color:#e9deff}
.quote{border-left:3px solid var(--ember);padding:6px 0 6px 18px;font-style:italic;color:#efe7ff;max-width:62ch}

/* ---------- Karten & Grids ---------- */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;
  backdrop-filter:blur(6px);transition:.2s}
.card:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.3)}
.card p{margin:0;color:var(--muted);font-size:15px}
.num{width:36px;height:36px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  font-weight:800;margin-bottom:12px;background:linear-gradient(135deg,var(--violet-soft),var(--magenta));color:#fff}

/* ---------- Label-Icons (Cover) ---------- */
.labels{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:18px;margin-top:6px}
.label{text-align:center}
.dot{width:74px;height:74px;border-radius:50%;margin:0 auto 10px;display:block;
  box-shadow:0 14px 30px -12px rgba(0,0,0,.85)}
.dot img{width:100%;height:100%;display:block;border-radius:50%}
.label b{font-size:13.5px;display:block}
.label.regen b{color:#5ee08a} .label.co2 b{color:#8ab4ff}
.label.sys b{color:#ffb066} .label.degen b{color:#ff8a8a}
.label small{color:var(--muted);font-size:12px}

/* ---------- Buttons ---------- */
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn{display:inline-block;padding:13px 24px;border-radius:12px;text-decoration:none;font-weight:700;font-size:15px;transition:.2s;border:0;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--ember),#ff7a18);color:#26170a}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid var(--line)}
.btn-ghost:hover{background:rgba(255,255,255,.17)}

/* ---------- Hero ---------- */
.hero{padding:70px 0 60px}
.hero-grid{display:grid;gap:40px;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);align-items:center}
.hero img{width:100%;max-width:330px;border-radius:14px;box-shadow:0 30px 70px -24px rgba(0,0,0,.9);
  border:1px solid var(--line)}
@media(max-width:820px){.hero-grid{grid-template-columns:1fr}.hero img{max-width:250px}}

/* ---------- Tabellen ---------- */
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,255,255,.04)}
table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
th,td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
th{background:rgba(255,255,255,.07);font-weight:700;color:#fff}
td{color:#e7dffb}
tr:last-child td{border-bottom:0}
.bar{height:9px;border-radius:99px;background:linear-gradient(90deg,var(--violet-soft),var(--ember));display:block}
.neg .bar{background:linear-gradient(90deg,var(--flame),#ff8a8a)}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700}
.pill.ok{background:rgba(22,163,74,.22);color:#7ee6a0}
.pill.warn{background:rgba(249,115,22,.22);color:#ffbb7a}
.pill.bad{background:rgba(220,38,38,.22);color:#ff9c9c}

/* ---------- Rechner ---------- */
form.calc{background:rgba(255,255,255,.055);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
label{display:block;font-weight:600;font-size:14px;margin:0 0 6px}
input,select,textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font:inherit;
  font-size:15px;background:rgba(10,4,24,.6);color:var(--ink);margin-bottom:16px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--violet-soft);outline-offset:1px}
.row{display:grid;gap:0 16px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.result{margin-top:22px;border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:rgba(10,4,24,.5)}
.kpi{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}
.kpi div b{display:block;font-size:30px;line-height:1.1;color:#fff}
.kpi div span{font-size:13px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}
.verdict{margin-top:18px;font-weight:700;font-size:17px}

/* ---------- Beiträge / Details ---------- */
.post{display:block;text-decoration:none;color:inherit}
.post .meta{font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
details{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin-bottom:12px}
details summary{cursor:pointer;font-weight:700}
details p{color:var(--muted);margin:10px 0 0}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--line);background:rgba(10,4,24,.6);padding:34px 0;font-size:14px;color:var(--muted)}
footer a{color:#e2d5ff}
footer .cols{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.small{font-size:13px;color:var(--muted)}
/* ---------- Leseproben / Hover-Reveal ---------- */
.reveal{position:relative;cursor:pointer}
.reveal .more{
  display:grid;grid-template-rows:0fr;opacity:0;transition:grid-template-rows .32s ease,opacity .25s ease,margin .3s ease;
  margin-top:0;
}
.reveal .more > div{overflow:hidden}
.reveal:hover .more,.reveal:focus-within .more,.reveal.open .more{grid-template-rows:1fr;opacity:1;margin-top:12px}
.reveal .more p{color:#e7dffb;font-size:14.5px;margin:0 0 10px}
.reveal .more p:last-child{margin-bottom:0}
.reveal .more .cite{border-left:3px solid var(--ember);padding-left:14px;font-style:italic;color:#f3ecff}
.reveal{cursor:pointer}

/* ---------- Feinschliff Abstände ---------- */
.hero{padding:38px 0 34px}
.hero-grid{gap:28px}
.grid{gap:14px}
.card{padding:18px}
footer{padding:26px 0}
.cta{margin-top:18px}

/* ---------- Mobil ---------- */
@media(max-width:900px){
  .wrap{padding:0 16px}
  section{padding:30px 0}
  .hero{padding:26px 0}
  .hero-grid{grid-template-columns:1fr;text-align:left}
  .hero img{max-width:220px}
}
@media(max-width:640px){
  body{line-height:1.6}
  .nav .wrap{gap:10px}
  .brand{font-size:13.5px;max-width:60%}
  .brand small{font-size:10px;letter-spacing:.1em}
  .menubtn{padding:9px 14px;font-size:13.5px}
  .menulist{min-width:min(260px,78vw)}
  h1{font-size:26px}
  h1 span{font-size:.6em}
  .lead{font-size:15.5px}
  .kpi{grid-template-columns:1fr;gap:12px}
  .kpi div b{font-size:26px}
  .cta{gap:10px}
  .btn{width:100%;text-align:center;padding:12px 18px}
  form.calc{padding:18px}
  .result{padding:18px}
  table{min-width:420px;font-size:14px}
  th,td{padding:10px 12px}
  .labels{grid-template-columns:repeat(2,1fr);gap:14px}
  .dot{width:56px;height:56px}
  .dot svg{width:30px;height:30px}
  footer .cols{gap:14px}
}