/* =========================================================================
   waermstens.de — "The Living Energy Hub"
   Dark, immersiv, 3D. Neon-Energie über tiefem Anthrazit, Glut als Wärme-Anker.
   ========================================================================= */

:root {
  --bg:        #05070a;
  --bg-2:      #0a0e14;
  --bg-3:      #10151d;
  --glass:     rgba(255,255,255,.045);
  --glass-2:   rgba(255,255,255,.07);
  --linie:     rgba(255,255,255,.09);
  --linie-2:   rgba(255,255,255,.16);

  --cyan:      #34e5e0;
  --gruen:     #5cf08a;
  --glut:      #ff6a3d;
  --glut-2:    #ff9a3d;
  --violet:    #8b7bff;

  --text:      #eef2f6;
  --text-2:    #aeb8c4;
  --text-3:    #6d7885;

  --sans: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --disp: "Space Grotesk", "Inter", sans-serif;
  --mono: "Space Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --breite: 1240px;
  --r: 20px;
  --r-s: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
/* Grund-Glow hinter allem */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(60% 50% at 75% 0%, rgba(52,229,224,.10), transparent 70%),
    radial-gradient(50% 40% at 15% 15%, rgba(255,106,61,.10), transparent 70%),
    radial-gradient(70% 60% at 50% 110%, rgba(139,123,255,.08), transparent 70%);
}
img, canvas, svg { display: block; max-width: 100%; }
a { color: var(--cyan); text-decoration: none; }

h1, h2, h3 { font-family: var(--disp); font-weight: 700; line-height: 1.05; letter-spacing: -.02em; margin: 0; }
.huelle { max-width: var(--breite); margin: 0 auto; padding: 0 26px; }
section { position: relative; padding: clamp(80px, 12vw, 160px) 0; }

.eyebrow {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .28em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 20px; display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }

.leise { color: var(--text-2); }

/* ------------------------------------------------------------- Navigation */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; gap: 24px;
  padding: 16px clamp(20px, 4vw, 44px);
  background: rgba(5,7,10,.55); backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--linie);
  transition: background .3s, padding .3s;
}
.nav.klein { padding-top: 10px; padding-bottom: 10px; background: rgba(5,7,10,.82); }
.nav-marke { display: flex; align-items: center; gap: 12px; font-family: var(--disp); font-weight: 700; font-size: 1.15rem; color: var(--text); letter-spacing: -.01em; }
.nav-punkt { width: 30px; height: 30px; }
.nav-links { display: flex; gap: 26px; margin-left: auto; align-items: center; }
.nav-links a { color: var(--text-2); font-size: .93rem; font-weight: 500; transition: color .2s; position: relative; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: 10px 20px; border-radius: 999px; font-weight: 600; font-size: .9rem;
  color: #05070a !important; background: linear-gradient(120deg, var(--cyan), var(--gruen));
  box-shadow: 0 0 24px rgba(52,229,224,.35); transition: transform .2s, box-shadow .2s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 0 34px rgba(52,229,224,.55); }
.nav-schalter { display: none; background: none; border: 1px solid var(--linie-2); color: var(--text);
                border-radius: 10px; padding: 8px 12px; margin-left: auto; cursor: pointer; font-size: 1.1rem; }

/* ------------------------------------------------------------------ HERO */
.hero { min-height: 100svh; display: flex; align-items: center; position: relative; overflow: hidden; }
#hub-canvas { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; }
.hero-inner { position: relative; z-index: 2; max-width: var(--breite); margin: 0 auto; padding: 120px 26px 0; width: 100%; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.hero h1 {
  font-size: clamp(2.9rem, 7vw, 6rem); letter-spacing: -.035em;
  text-shadow: 0 0 60px rgba(52,229,224,.25);
}
.hero h1 .glut { background: linear-gradient(120deg, var(--glut-2), var(--glut)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero h1 .cy { background: linear-gradient(120deg, var(--cyan), var(--gruen)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { font-size: clamp(1.05rem, 1.6vw, 1.28rem); color: var(--text-2); max-width: 32em; margin: 26px 0 0; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 38px; }
.hero-stats { display: flex; gap: 30px; flex-wrap: wrap; margin-top: 44px; }
.hero-stat .z { font-family: var(--disp); font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700;
  background: linear-gradient(120deg, #fff, var(--cyan)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stat .t { font-size: .82rem; color: var(--text-3); font-family: var(--mono); letter-spacing: .05em; }
.hero-scrollhint { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 2;
  font-family: var(--mono); font-size: .72rem; letter-spacing: .2em; color: var(--text-3); text-transform: uppercase; animation: bob 2.4s ease-in-out infinite; }
@keyframes bob { 0%,100%{transform:translate(-50%,0)} 50%{transform:translate(-50%,8px)} }

/* --------------------------------------------------------------- Buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 15px 28px; border-radius: 999px;
  font-weight: 600; font-size: 1rem; cursor: pointer; border: none; transition: transform .2s, box-shadow .2s, background .2s; font-family: var(--sans); }
.btn-glut { color: #100; background: linear-gradient(120deg, var(--glut-2), var(--glut)); box-shadow: 0 0 30px rgba(255,106,61,.4); }
.btn-glut:hover { transform: translateY(-2px); box-shadow: 0 0 44px rgba(255,106,61,.6); color: #100; }
.btn-glas { color: var(--text); background: var(--glass-2); border: 1px solid var(--linie-2); backdrop-filter: blur(10px); }
.btn-glas:hover { transform: translateY(-2px); background: rgba(255,255,255,.12); }

/* ------------------------------------------------------------ Glass-Karte */
.glas {
  background: var(--glass); border: 1px solid var(--linie);
  border-radius: var(--r); backdrop-filter: blur(16px) saturate(130%);
  position: relative; overflow: hidden;
}
.glas::after { content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(140deg, rgba(255,255,255,.09), transparent 40%); }

/* ---------------------------------------------------------- Section-Titel */
.s-kopf { max-width: 46em; margin-bottom: 56px; }
.s-kopf h2 { font-size: clamp(2rem, 4.2vw, 3.4rem); }
.s-kopf p { font-size: clamp(1.05rem, 1.6vw, 1.24rem); color: var(--text-2); margin-top: 18px; }

/* --------------------------------------------------------------- Bento */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; grid-auto-rows: minmax(150px, auto); }
.bento .zelle { padding: 30px; display: flex; flex-direction: column; justify-content: space-between; }
.bento .gross { grid-column: span 4; grid-row: span 2; }
.bento .hoch  { grid-column: span 2; grid-row: span 2; }
.bento .breit { grid-column: span 4; }
.bento .quad  { grid-column: span 2; }
.bento .voll  { grid-column: span 6; }
.zelle .kicker { font-family: var(--mono); font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--text-3); }
.zelle .wert { font-family: var(--disp); font-weight: 700; line-height: 1; margin: 14px 0 6px; }
.zelle .wert.xl { font-size: clamp(2.6rem, 6vw, 4.6rem); background: linear-gradient(120deg,#fff,var(--cyan)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.zelle .wert.glut { background: linear-gradient(120deg, var(--glut-2), var(--glut)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.zelle h3 { font-size: 1.25rem; margin-bottom: 10px; }
.zelle p { color: var(--text-2); font-size: .96rem; margin: 0; }
.zelle .ikon { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(52,229,224,.12); color: var(--cyan); margin-bottom: 18px; border: 1px solid rgba(52,229,224,.2); }
.zelle.warm .ikon { background: rgba(255,106,61,.12); color: var(--glut-2); border-color: rgba(255,106,61,.22); }

/* ------------------------------------------------------ Cluster / Vergleich */
.vergleich { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
.vs-karte { padding: 34px; border-radius: var(--r); position: relative; overflow: hidden; }
.vs-strom { background: linear-gradient(160deg, rgba(92,240,138,.10), rgba(52,229,224,.05)); border: 1px solid rgba(92,240,138,.24); }
.vs-waerme { background: var(--glass); border: 1px solid var(--linie); }
.vs-karte .label { font-family: var(--mono); font-size: .74rem; letter-spacing: .18em; text-transform: uppercase; color: var(--text-3); }
.vs-karte .preis { font-family: var(--disp); font-size: clamp(2.2rem,5vw,3.4rem); font-weight: 700; margin: 10px 0; }
.vs-strom .preis { color: var(--gruen); }
.vs-karte ul { list-style: none; padding: 0; margin: 18px 0 0; }
.vs-karte li { padding: 8px 0; border-top: 1px solid var(--linie); color: var(--text-2); font-size: .95rem; display: flex; justify-content: space-between; }

/* --------------------------------------------------------------- Ablauf */
.timeline { display: grid; gap: 0; margin-top: 40px; }
.tl-punkt { display: grid; grid-template-columns: 130px 1fr; gap: 28px; padding: 26px 0; border-top: 1px solid var(--linie); }
.tl-punkt .datum { font-family: var(--mono); color: var(--cyan); font-size: .9rem; letter-spacing: .04em; }
.tl-punkt.jetzt .datum { color: var(--glut-2); }
.tl-punkt h3 { font-size: 1.2rem; margin-bottom: 6px; }
.tl-punkt p { color: var(--text-2); margin: 0; font-size: .96rem; }

/* --------------------------------------------------------------- CTA-Band */
.cta-band { text-align: center; padding: clamp(70px,10vw,120px) 26px; position: relative; }
.cta-band h2 { font-size: clamp(2.2rem, 5vw, 4rem); }
.cta-band p { color: var(--text-2); max-width: 34em; margin: 20px auto 34px; font-size: 1.12rem; }

/* --------------------------------------------------------------- Formular */
.form-karte { max-width: 620px; margin: 40px auto 0; padding: clamp(28px,4vw,44px); border-radius: var(--r); }
.form-reihe { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.feld { display: flex; flex-direction: column; gap: 7px; margin-bottom: 16px; }
.feld label { font-size: .84rem; color: var(--text-2); font-weight: 500; }
.feld input, .feld select, .feld textarea {
  background: rgba(0,0,0,.35); border: 1px solid var(--linie-2); border-radius: 12px;
  padding: 13px 15px; color: var(--text); font-family: var(--sans); font-size: 1rem;
}
.feld input:focus, .feld select:focus, .feld textarea:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(52,229,224,.15); }
.feld textarea { min-height: 96px; resize: vertical; }
.zustimm { display: flex; gap: 11px; align-items: flex-start; font-size: .86rem; color: var(--text-3); margin-bottom: 16px; }
.zustimm input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--cyan); flex: none; }
.hinweis { padding: 13px 16px; border-radius: 12px; font-size: .92rem; display: none; }
.hinweis.gut { display: block; background: rgba(92,240,138,.12); color: var(--gruen); border: 1px solid rgba(92,240,138,.25); }
.hinweis.fehl { display: block; background: rgba(255,106,61,.12); color: var(--glut-2); border: 1px solid rgba(255,106,61,.25); }

/* --------------------------------------------------------------- FAQ */
.faq-item { border-top: 1px solid var(--linie); }
.faq-item summary { cursor: pointer; padding: 22px 40px 22px 0; font-weight: 600; font-size: 1.08rem;
  list-style: none; position: relative; font-family: var(--disp); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  color: var(--cyan); font-size: 1.5rem; font-weight: 300; }
.faq-item[open] summary::after { content: "−"; }
.faq-item .a { padding-bottom: 22px; color: var(--text-2); max-width: 62em; }

/* --------------------------------------------------------------- Footer */
.fuss { border-top: 1px solid var(--linie); padding: 64px 0 36px; color: var(--text-3); }
.fuss-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr; gap: 36px; margin-bottom: 44px; }
.fuss h4 { font-family: var(--mono); font-size: .74rem; letter-spacing: .18em; text-transform: uppercase; color: var(--text-2); margin-bottom: 16px; }
.fuss ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.fuss a { color: var(--text-3); font-size: .95rem; }
.fuss a:hover { color: var(--cyan); }
.fuss-note { background: var(--glass); border: 1px solid var(--linie); border-radius: var(--r-s); padding: 18px 22px; font-size: .86rem; color: var(--text-3); line-height: 1.6; max-width: 40em; margin-top: 18px; }
.fuss-unten { border-top: 1px solid var(--linie); padding-top: 24px; display: flex; flex-wrap: wrap; gap: 10px 24px; justify-content: space-between; font-size: .85rem; }

/* --------------------------------------------------------- Scroll-Reveal */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .9s cubic-bezier(.16,1,.3,1), transform .9s cubic-bezier(.16,1,.3,1); }
.reveal.sichtbar { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; } .reveal.d3 { transition-delay: .24s; }

/* --------------------------------------------------------------- Mobil */
@media (max-width: 940px) {
  .hero-grid { grid-template-columns: 1fr; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento .gross, .bento .hoch, .bento .breit, .bento .quad, .bento .voll { grid-column: span 2; grid-row: auto; }
  .vergleich { grid-template-columns: 1fr; }
  .fuss-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-schalter { display: block; }
  .nav-links.offen { display: flex; flex-direction: column; align-items: flex-start; position: absolute;
    top: 100%; left: 0; right: 0; background: rgba(5,7,10,.96); border-bottom: 1px solid var(--linie); padding: 18px 26px; gap: 14px; }
}
@media (max-width: 560px) {
  .form-reihe { grid-template-columns: 1fr; }
  .tl-punkt { grid-template-columns: 1fr; gap: 6px; }
  body { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; }
}