/* ===== ESS Energieeffizienz – jetztstromsparen.info ===== */
:root{
  --navy:#0b2545;--navy-2:#13315c;--teal:#0aa; --green:#16a34a;--green-d:#0f7a34;
  --accent:#00b8a9;--accent-d:#00867b;--amber:#f5a623;
  --ink:#12202f;--muted:#5b6b7b;--line:#e4e9ef;--bg:#ffffff;--bg-soft:#f5f8fb;
  --radius:14px;--shadow:0 10px 30px rgba(11,37,69,.10);--maxw:1140px;
  --font:'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);line-height:1.65;background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent-d);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
h1,h2,h3{line-height:1.2;color:var(--navy);font-weight:800;letter-spacing:-.01em}
h2{font-size:clamp(1.6rem,3.2vw,2.4rem);margin-bottom:.5em}
h3{font-size:1.25rem;margin-bottom:.4em}
p{margin-bottom:1rem}
section{padding:72px 0}
.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;font-weight:700;color:var(--accent-d);margin-bottom:.6rem}
.lead{font-size:1.15rem;color:var(--muted);max-width:52ch}

/* Buttons */
.btn{display:inline-block;padding:15px 30px;border-radius:50px;font-weight:700;font-size:1rem;cursor:pointer;border:0;transition:transform .15s,box-shadow .15s;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-d));color:#fff;box-shadow:0 8px 22px rgba(22,163,74,.35)}
.btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6)}
.btn-outline{background:#fff;color:var(--navy);border:2px solid var(--line)}
.btn-lg{padding:18px 40px;font-size:1.1rem}

/* Header */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{font-weight:800;font-size:1.25rem;color:var(--navy);letter-spacing:-.02em}
.logo span{color:var(--green)}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{color:var(--navy);font-weight:600;font-size:.96rem}
.nav-cta{background:var(--green);color:#fff!important;padding:10px 20px;border-radius:50px}
.nav-cta:hover{text-decoration:none;background:var(--green-d)}
.burger{display:none;font-size:1.6rem;background:none;border:0;color:var(--navy)}

/* Hero */
.hero{background:radial-gradient(1200px 500px at 80% -10%,rgba(0,184,169,.25),transparent),linear-gradient(160deg,var(--navy),var(--navy-2));color:#fff;padding:90px 0 96px;position:relative;overflow:hidden}
.hero h1{color:#fff;font-size:clamp(2.1rem,5vw,3.5rem);margin-bottom:.4em}
.hero .hl{color:#5be9d8}
.hero p{color:#d5e2f0;font-size:1.2rem;max-width:58ch;margin-bottom:1.8rem}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:1.6rem}
.hero-badges{display:flex;gap:22px;flex-wrap:wrap;color:#bcd; font-size:.92rem}
.hero-badges span{display:flex;align-items:center;gap:8px}
.check{color:#5be9d8;font-weight:900}

/* Stat strip */
.stats{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat b{display:block;font-size:2rem;color:var(--green-d);font-weight:800}
.stat small{color:var(--muted);font-size:.9rem}

/* Grid cards */
.grid{display:grid;gap:24px}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.card .ico{width:52px;height:52px;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent-d));display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:#fff;margin-bottom:16px}
.card p{color:var(--muted);margin-bottom:0}
.soft{background:var(--bg-soft)}

/* Problem/solution split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.list-check{list-style:none}
.list-check li{padding:8px 0 8px 32px;position:relative;color:var(--ink)}
.list-check li::before{content:"✓";position:absolute;left:0;top:8px;color:var(--green);font-weight:900}

/* Steps */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{position:relative;padding-top:14px}
.step .n{width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:12px}
.step p{color:var(--muted);font-size:.95rem}

/* Highlight band */
.band{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;text-align:center}
.band h2{color:#fff}
.band p{color:#cfe;max-width:60ch;margin:0 auto 1.6rem}

/* Insurance / guarantee box */
.guarantee{background:linear-gradient(135deg,#0f7a34,#16a34a);color:#fff;border-radius:var(--radius);padding:36px;text-align:center}
.guarantee h2{color:#fff}
.guarantee p{color:#eafff0}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:18px 22px;font-weight:700;color:var(--navy);list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--green)}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 22px 20px;color:var(--muted)}

/* Savings table */
.savings-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);font-size:.98rem}
.savings-table th,.savings-table td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
.savings-table thead th{background:var(--navy);color:#fff;font-weight:700}
.savings-table tbody tr:nth-child(even){background:var(--bg-soft)}
.savings-table td.pct{font-weight:800;color:var(--green-d);white-space:nowrap}
.table-note{font-size:.85rem;color:var(--muted);margin-top:12px}

/* Case study */
.case{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:grid;grid-template-columns:1.1fr 1fr}
.case .case-body{padding:34px}
.case .case-figures{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:20px;align-content:center}
.case .fig b{display:block;font-size:1.9rem;color:#5be9d8;font-weight:800;line-height:1.1}
.case .fig small{color:#cfe;font-size:.85rem}
.case h3{font-size:1.4rem}
@media(max-width:820px){.case,.case .case-figures{grid-template-columns:1fr 1fr}.case{grid-template-columns:1fr}}

/* Legal pages */
.legal{max-width:800px;margin:0 auto;padding:44px 22px}
.legal h1{margin-bottom:.4em}
.legal h2{font-size:1.25rem;margin-top:1.6em}
.legal p{color:#26374a}

/* Calculator */
.calc{max-width:900px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px}
.calc-form{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px;align-items:end}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:600;font-size:.9rem;color:var(--navy)}
.field input{padding:13px 14px;border:1px solid var(--line);border-radius:10px;font-size:1rem;font-family:inherit}
.field input:focus{outline:2px solid var(--accent);border-color:var(--accent)}
.calc-actions{grid-column:1/-1;text-align:center;margin-top:6px}
.calc-result{margin-top:28px;border-top:1px solid var(--line);padding-top:26px}
.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:18px 0}
.rbox{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center}
.rbox b{display:block;font-size:1.5rem;color:var(--navy);margin-top:4px}
.rbox-hi{background:linear-gradient(135deg,#0f7a34,#16a34a);border:0}
.rbox-hi .rlbl,.rbox-hi b{color:#fff}
.rlbl{font-size:.85rem;color:var(--muted);font-weight:600}
.result-extra{text-align:center;color:var(--muted);font-size:.95rem}
.calc-email{background:var(--bg-soft);border-radius:12px;padding:22px;margin-top:22px}
.email-row{display:grid;grid-template-columns:1fr 1fr auto;gap:12px}
.email-row input{padding:13px 14px;border:1px solid var(--line);border-radius:10px;font-size:1rem;font-family:inherit}
.consent{display:flex;gap:8px;align-items:flex-start;font-size:.85rem;color:var(--muted);margin-top:12px}
.consent input{margin-top:3px}
.send-status{margin-top:12px;font-weight:600;font-size:.95rem}
.send-status.ok{color:var(--green-d)}
.send-status.err{color:#c0392b}
@media(max-width:760px){.calc-form,.result-grid,.email-row{grid-template-columns:1fr}}

/* Contact */
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.contact-card a{font-weight:600}

/* Footer */
footer{background:var(--navy);color:#b9c8d8;padding:54px 0 28px;font-size:.92rem}
footer h4{color:#fff;margin-bottom:14px;font-size:1rem}
footer a{color:#b9c8d8}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:36px;margin-bottom:30px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#8ea3b8}

/* Blog */
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.post-card .thumb{height:170px;background:linear-gradient(135deg,var(--navy),var(--accent-d));display:flex;align-items:center;justify-content:center;color:#fff;font-size:2.4rem}
.post-card .body{padding:22px;display:flex;flex-direction:column;flex:1}
.tag{display:inline-block;background:var(--bg-soft);color:var(--accent-d);font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:50px;margin-bottom:10px;text-transform:uppercase;letter-spacing:.04em}
.post-card h3{font-size:1.12rem}
.post-card p{color:var(--muted);font-size:.95rem;flex:1}
.post-meta{color:var(--muted);font-size:.85rem;margin-bottom:18px}

/* Article */
.article{max-width:760px;margin:0 auto;padding:40px 22px 20px}
.article h1{font-size:clamp(1.8rem,4vw,2.6rem);margin-bottom:.3em}
.article h2{margin-top:1.6em}
.article p,.article li{color:#26374a;font-size:1.06rem}
.article ul{margin:0 0 1rem 1.2rem}
.article .callout{background:var(--bg-soft);border-left:4px solid var(--green);padding:18px 22px;border-radius:8px;margin:22px 0}
.breadcrumb{font-size:.9rem;color:var(--muted);margin-bottom:18px}

@media(max-width:900px){
  .g-3,.steps,.stats .wrap{grid-template-columns:repeat(2,1fr)}
  .split,.g-2,.foot-grid{grid-template-columns:1fr}
  .nav-links{display:none}
  .burger{display:block}
  .nav-links.open{display:flex;position:absolute;top:70px;left:0;right:0;flex-direction:column;background:#fff;padding:18px 22px;border-bottom:1px solid var(--line);gap:14px}
}
@media(max-width:540px){
  .g-3,.steps,.stats .wrap{grid-template-columns:1fr}
  section{padding:52px 0}
}