/* ============================================================
   ThermRev designsystem — "Termisk Revolution"
   Tema: koldt → varmt gradient (én gradient, to farver)
   Ingen webfonts, ingen eksterne afhængigheder = hurtig load
   ============================================================ */

:root{
  --cold:#0B3D91;        /* dyb termisk blå */
  --cold-2:#0C4DA2;
  --warm:#FF6B35;        /* termisk orange */
  --warm-2:#E8551F;
  --grad:linear-gradient(100deg,var(--cold) 0%,var(--warm) 100%);
  --grad-soft:linear-gradient(100deg,rgba(11,61,145,.08),rgba(255,107,53,.08));
  --ink:#16202E;
  --ink-2:#4A5568;
  --bg:#FFFFFF;
  --bg-2:#F6F8FB;
  --line:#E3E8EF;
  --radius:14px;
  --shadow:0 10px 30px rgba(11,61,145,.10);
  --max:1120px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--cold-2);text-decoration:none}
a:hover{text-decoration:underline}

/* ---------- Termisk gradientlinje (brand-signatur) ---------- */
.thermo-bar{height:4px;background:var(--grad)}

/* ---------- Layout ---------- */
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
section{padding:72px 0}
section.alt{background:var(--bg-2)}

/* ---------- Header / nav ---------- */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:28px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--ink)}
.brand img{height:34px;width:auto}
.brand:hover{text-decoration:none}
nav.main{margin-left:auto;display:flex;align-items:center;gap:22px}
nav.main a{color:var(--ink-2);font-weight:500;font-size:.95rem;padding:6px 2px;border-bottom:2px solid transparent}
nav.main a:hover{color:var(--ink);text-decoration:none}
nav.main a.active{color:var(--ink);border-bottom:2px solid var(--warm)}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:1.2rem;cursor:pointer;color:var(--ink)}

/* ---------- Knapper ---------- */
.btn{display:inline-block;padding:13px 26px;border-radius:999px;font-weight:600;font-size:.95rem;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-grad,nav.main a.btn-grad,nav.main a.btn-grad:hover{background:var(--grad);color:#fff !important;box-shadow:0 6px 18px rgba(232,85,31,.30)}
.btn-grad:hover{box-shadow:0 10px 24px rgba(232,85,31,.40);color:#fff}
.btn-ghost{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--cold-2);color:var(--cold-2)}
.btn-light{background:rgba(255,255,255,.16);color:#fff;border:1.5px solid rgba(255,255,255,.45)}
.btn-light:hover{background:rgba(255,255,255,.28);color:#fff}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(115deg,#07264F 0%,var(--cold) 45%,var(--warm-2) 100%);color:#fff;padding:96px 0 88px}
.hero .kicker{display:inline-block;font-size:.85rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:6px 14px;border-radius:999px;margin-bottom:22px}
.hero h1{font-size:clamp(2rem,4.5vw,3.3rem);line-height:1.15;margin:0 0 18px;max-width:20ch}
.hero p.lead{font-size:1.15rem;max-width:58ch;color:rgba(255,255,255,.88);margin:0 0 32px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Sektionstitler ---------- */
.sec-head{max-width:62ch;margin-bottom:44px}
.sec-head h2{font-size:clamp(1.6rem,3vw,2.2rem);margin:0 0 10px;line-height:1.2}
.sec-head h2::after{content:"";display:block;width:64px;height:4px;border-radius:2px;background:var(--grad);margin-top:14px}
.sec-head p{color:var(--ink-2);margin:0;font-size:1.05rem}

/* ---------- Kort ---------- */
.grid{display:grid;gap:24px}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.card .media{aspect-ratio:16/10;background:var(--grad-soft);display:flex;align-items:center;justify-content:center;overflow:hidden}
.card .media img{width:100%;height:100%;object-fit:cover}
.card .body{padding:24px;display:flex;flex-direction:column;gap:8px;flex:1}
.card h3{margin:0;font-size:1.15rem}
.card p{margin:0;color:var(--ink-2);font-size:.95rem}
.card .body .btn{margin-top:auto;align-self:flex-start}

/* ---------- Nøgletal ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;text-align:center}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 16px}
.stat .num{font-size:1.9rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{color:var(--ink-2);font-size:.9rem;margin-top:4px}

/* ---------- Split (tekst + visuel) ---------- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.split .visual{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}

/* ---------- Badges / tags ---------- */
.tag{display:inline-block;font-size:.78rem;font-weight:600;padding:4px 12px;border-radius:999px;background:var(--grad-soft);color:var(--cold);border:1px solid var(--line)}
.tag.warm{color:var(--warm-2)}

/* ---------- CTA-bånd ---------- */
.cta-band{background:var(--grad);color:#fff;text-align:center;padding:64px 0}
.cta-band h2{margin:0 0 12px;font-size:clamp(1.5rem,3vw,2rem)}
.cta-band p{margin:0 auto 28px;max-width:54ch;color:rgba(255,255,255,.9)}

/* ---------- Kontakt ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.contact-info p{margin:.3rem 0}
.contact-info .lbl{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-2);margin-top:1.2rem}

/* ---------- Footer ---------- */
footer.site{background:#0A1A30;color:#B9C4D4;padding:56px 0 0;font-size:.92rem}
footer.site h4{color:#fff;margin:0 0 14px;font-size:1rem}
footer.site a{color:#B9C4D4}
footer.site a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin:6px 0}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:.85rem;color:#8A98AB}

/* ---------- Tabeller (produktspecs) ---------- */
table.specs{width:100%;border-collapse:collapse;font-size:.95rem}
table.specs th,table.specs td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line)}
table.specs th{color:var(--ink-2);font-weight:600;width:42%}

/* ---------- Accordion (ydelser) ---------- */
details.acc{border:1px solid var(--line);border-radius:14px;background:#fff;margin-bottom:14px;overflow:hidden;transition:box-shadow .2s}
details.acc:hover{box-shadow:var(--shadow)}
details.acc summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 26px;font-weight:700;font-size:1.15rem;color:var(--ink)}
details.acc summary::-webkit-details-marker{display:none}
details.acc summary .acc-sub{display:block;font-weight:400;font-size:.92rem;color:var(--ink-2);margin-top:3px}
details.acc summary::after{content:"+";flex-shrink:0;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--grad);color:#fff;font-size:1.3rem;font-weight:500;transition:transform .25s}
details.acc[open] summary::after{transform:rotate(45deg)}
details.acc .acc-body{padding:2px 26px 26px;border-top:1px solid var(--line)}
details.acc .acc-body p{color:var(--ink-2)}
details.acc .acc-body ul{margin:8px 0 0;padding-left:22px;color:var(--ink-2)}
details.acc .acc-body li{margin:5px 0}
details.acc .acc-body h4{margin:18px 0 4px;font-size:1rem}

/* ---------- Responsivt ---------- */
@media(max-width:920px){
  .grid.c3,.grid.c4{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  section{padding:52px 0}
  .grid.c2,.grid.c3,.grid.c4{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr}
  nav.main{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 24px 20px;border-bottom:1px solid var(--line);gap:4px}
  nav.main.open{display:flex}
  nav.main a{padding:10px 0}
  .nav-toggle{display:block}
  .foot-grid{grid-template-columns:1fr}
}