/* simplesolar — V3 (světlý + tmavý režim přes [data-theme]) */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root{
  --red:#c8362f; --red-d:#a82a24; --amber:#f59e2a; --gold:#ffbe3d;
  --ink:#2a1815; --text:#2a1815; --muted:#7a6a64;
  --bg:#fff7ef; --bg2:#ffffff; --line:#f0e3d6;
  --header:rgba(255,247,239,.8); --card:#ffffff; --cardline:#f0e3d6;
  --hero1:#ffd77a; --hero2:rgba(245,158,42,.5); --hero3:rgba(200,54,47,.18);
  --roof1:#2a1815; --roof2:#2a1815; --ridge:linear-gradient(90deg,var(--red),var(--red));
  --mon-bg:linear-gradient(120deg,var(--red),var(--amber)); --mon-text:#fff; --mon-muted:rgba(255,255,255,.92);
  --glass:rgba(255,255,255,.16); --glassline:rgba(255,255,255,.3);
  --logo:url('../assets/logo-light.png');
  --shadow:0 24px 44px -26px rgba(200,54,47,.35);
}
[data-theme="dark"]{
  --red:#e0463c; --red-d:#c2362e; --amber:#ffb02e; --gold:#ffc861;
  --ink:#120d12; --text:#f7f3f4; --muted:#c6bdc0;
  --bg:#130c10; --bg2:#1a1116; --line:rgba(255,255,255,.13);
  --header:rgba(19,12,16,.55); --card:rgba(255,255,255,.06); --cardline:rgba(255,255,255,.13);
  --hero1:rgba(255,176,46,.30); --hero2:rgba(224,70,60,.22); --hero3:transparent;
  --roof1:#241a20; --roof2:#160f14; --ridge:linear-gradient(90deg,var(--amber),var(--red));
  --mon-bg:linear-gradient(120deg,rgba(224,70,60,.22),rgba(255,176,46,.16)); --mon-text:#f7f3f4; --mon-muted:#c6bdc0;
  --glass:rgba(0,0,0,.28); --glassline:rgba(255,255,255,.13);
  --logo:url('../assets/logo-dark.png');
  --shadow:0 30px 60px -30px rgba(0,0,0,.6);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Plus Jakarta Sans',system-ui,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
[data-theme="dark"] body{background:#130c10;background-image:
  radial-gradient(1100px 620px at 50% -16%,rgba(255,176,46,.22),transparent 56%),
  radial-gradient(760px 620px at 12% 8%,rgba(224,70,60,.18),transparent 55%)}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
a{text-decoration:none;color:inherit}
img{max-width:100%}

.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 24px;border-radius:40px;font-weight:700;font-size:15px;transition:.2s;border:0;cursor:pointer}
.btn-red{background:linear-gradient(100deg,var(--amber),var(--red));color:#fff;box-shadow:0 10px 24px rgba(200,54,47,.3)}
[data-theme="dark"] .btn-red{color:#1a0f08;box-shadow:0 12px 30px rgba(224,70,60,.4)}
.btn-red:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(200,54,47,.4)}
.btn-ghost{background:var(--bg2);color:var(--text);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--red);color:var(--red)}
.btn-white{background:#fff;color:var(--red)}

/* header */
header{position:sticky;top:0;background:var(--header);backdrop-filter:blur(14px);z-index:50;border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px;gap:18px}
.brand{display:block;width:188px;height:50px;background:var(--logo) left center/contain no-repeat}
.menu{display:flex;gap:28px;font-weight:600;font-size:15px;color:var(--muted);margin-left:auto}
.menu a{padding:4px 0;border-bottom:2px solid transparent;transition:.2s}
.menu a:hover,.menu a.active{color:var(--text);border-color:var(--red)}
.nav-r{display:flex;align-items:center;gap:14px}
.toggle{width:42px;height:42px;border-radius:50%;border:1.5px solid var(--line);background:var(--bg2);color:var(--text);cursor:pointer;display:grid;place-items:center;font-size:18px;transition:.2s}
.toggle:hover{border-color:var(--red)}
.burger{display:none}

/* hero */
.hero{position:relative;overflow:hidden;padding:90px 0 80px}
.hero::before{content:"";position:absolute;left:50%;top:-340px;transform:translateX(-50%);width:1000px;height:1000px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,var(--hero1) 0%,var(--hero2) 26%,var(--hero3) 46%,transparent 64%)}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:130px;background:linear-gradient(transparent,var(--bg))}
.hero-inner{position:relative;text-align:center;max-width:820px;margin:0 auto}
.sunbadge{width:74px;height:74px;border-radius:50%;margin:0 auto 26px;background:radial-gradient(circle at 42% 40%,#ffe7a6,var(--gold) 55%,var(--red));box-shadow:0 0 60px rgba(245,158,42,.55)}
h1{font-size:clamp(36px,5.4vw,62px);line-height:1.04;font-weight:800;letter-spacing:-.025em}
h1 .g{background:linear-gradient(100deg,var(--amber),var(--red));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:19px;color:var(--muted);margin:24px auto 32px;max-width:580px}
.cta-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.scene{position:relative;max-width:760px;margin:60px auto 0;height:190px}
.roof{position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:560px;height:120px;
  background:linear-gradient(180deg,var(--roof1),var(--roof2));clip-path:polygon(8% 100%,50% 0,92% 100%);
  background-image:linear-gradient(90deg,rgba(255,255,255,.08) 2px,transparent 2px);background-size:40px 100%}
.roof::after{content:"";position:absolute;left:6%;right:6%;top:-2px;height:8px;background:var(--ridge);clip-path:polygon(0 100%,50% 0,100% 100%)}

/* page header (subpages) */
.phead{position:relative;overflow:hidden;padding:70px 0 40px;text-align:center}
.phead::before{content:"";position:absolute;left:50%;top:-420px;transform:translateX(-50%);width:900px;height:900px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,var(--hero1),var(--hero2) 30%,transparent 60%)}
.phead .inner{position:relative}
.phead h1{font-size:clamp(30px,4.4vw,50px)}
.phead p{color:var(--muted);margin-top:14px;font-size:18px;max-width:620px;margin-left:auto;margin-right:auto}

/* sections */
section{padding:76px 0}
.eyebrow{color:var(--red);font-weight:700;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px}
[data-theme="dark"] .eyebrow{background:linear-gradient(90deg,var(--amber),var(--red));-webkit-background-clip:text;background-clip:text;color:transparent}
.h2{font-size:clamp(27px,3.4vw,40px);font-weight:800;letter-spacing:-.02em}
.sub{color:var(--muted);margin-top:14px;max-width:600px}
.center{text-align:center;display:flex;flex-direction:column;align-items:center}
.prose{max-width:760px;margin:0 auto;color:var(--text)}
.prose p{margin:0 0 18px;color:var(--muted);font-size:16.5px}
.prose h3{font-size:22px;font-weight:700;margin:34px 0 12px}
.prose ul{margin:0 0 18px;padding-left:22px;color:var(--muted)}
.prose li{margin-bottom:8px}
.prose strong{color:var(--text)}
.prose a{color:var(--red);font-weight:600}

/* cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:46px;text-align:left}
.card{background:var(--card);border:1px solid var(--cardline);border-radius:22px;padding:28px 24px;transition:.25s;backdrop-filter:blur(12px)}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(224,70,60,.4)}
.ic{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;font-size:24px;margin-bottom:18px;background:linear-gradient(140deg,rgba(245,158,42,.22),rgba(200,54,47,.18))}
.card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--muted)}

/* variant pricing cards */
.vargrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:40px}
.varcard{background:var(--card);border:1px solid var(--cardline);border-radius:24px;padding:32px 28px;display:flex;flex-direction:column;backdrop-filter:blur(12px);transition:.25s}
.varcard:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.varcard.feat{border-color:var(--red);box-shadow:0 20px 50px -28px rgba(200,54,47,.5)}
.vartag{align-self:flex-start;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--red);background:rgba(200,54,47,.1);padding:5px 12px;border-radius:20px;margin-bottom:16px}
.varcard h3{font-size:22px;font-weight:800;margin-bottom:6px}
.varcard .desc{color:var(--muted);font-size:14.5px;margin-bottom:18px}
.varcard ul{list-style:none;margin:0 0 22px;display:flex;flex-direction:column;gap:10px}
.varcard li{display:flex;gap:10px;font-size:14.5px;color:var(--text)}
.varcard li::before{content:"☀";color:var(--amber)}
.varcard .price{margin-top:auto;font-size:13px;color:var(--muted)}
.varcard .price b{display:block;font-size:28px;font-weight:800;color:var(--text);letter-spacing:-.02em}

/* monitoring band */
.mon{background:var(--mon-bg);border:1px solid transparent;border-radius:34px;padding:54px;color:var(--mon-text);display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;position:relative;overflow:hidden;backdrop-filter:blur(14px)}
[data-theme="dark"] .mon{border-color:var(--line)}
.mon::after{content:"";position:absolute;top:-110px;right:-60px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.22),transparent 65%)}
[data-theme="dark"] .mon::after{background:radial-gradient(circle,rgba(255,176,46,.28),transparent 65%)}
.mon .eyebrow{color:#fff;opacity:.9}
[data-theme="dark"] .mon .eyebrow{-webkit-text-fill-color:initial}
.mon h2{font-size:32px;font-weight:800;letter-spacing:-.02em;position:relative}
.mon p{margin:16px 0 26px;position:relative;color:var(--mon-muted)}
.readout{position:relative;background:var(--glass);backdrop-filter:blur(10px);border:1px solid var(--glassline);border-radius:20px;padding:24px}
.readout .row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--glassline);font-size:15px}
.readout .row:last-child{border:0}
.readout .v{font-weight:800}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:46px;align-items:start}
.cinfo .crow{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--line)}
.cinfo .crow:last-child{border:0}
.cinfo .ci{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(140deg,rgba(245,158,42,.22),rgba(200,54,47,.18));font-size:18px;flex-shrink:0}
.cinfo .ck{font-size:13px;color:var(--muted)}
.cinfo .cv{font-weight:700}
.form{background:var(--card);border:1px solid var(--cardline);border-radius:22px;padding:30px}
.form label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin:0 0 6px}
.form input,.form textarea{width:100%;padding:12px 14px;border-radius:10px;border:1.5px solid var(--line);background:var(--bg);color:var(--text);font-family:inherit;font-size:15px;margin-bottom:16px}
.form input:focus,.form textarea:focus{outline:0;border-color:var(--red)}

/* CTA strip */
.ctastrip{text-align:center;padding:70px 0}
.ctastrip h2{font-size:clamp(26px,3.2vw,38px);font-weight:800;letter-spacing:-.02em}
.ctastrip p{color:var(--muted);margin:14px auto 28px;max-width:520px}

/* footer */
footer{border-top:1px solid var(--line);padding:50px 0 40px;color:var(--muted);font-size:14px}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;margin-bottom:30px}
.fbrand{width:180px;height:46px;background:var(--logo) left center/contain no-repeat;margin-bottom:14px}
.fcol h4{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--text);margin-bottom:14px}
.fcol a{display:block;color:var(--muted);padding:5px 0}
.fcol a:hover{color:var(--red)}
.fbot{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

@media(max-width:880px){
  .menu{display:none}
  .burger{display:grid}
  .cards{grid-template-columns:1fr 1fr}
  .vargrid{grid-template-columns:1fr}
  .mon,.contact-grid{grid-template-columns:1fr}
  .fgrid{grid-template-columns:1fr 1fr}
}