/* C&S Heating & Cooling — preview redesign
   Luxury dark cinematic direction: deep blacks, warm gold accents,
   elegant serif display type, animated hero, scroll reveals. */

:root{
  --bg:#0b0b0d;
  --bg-2:#121215;
  --bg-3:#17171b;
  --gold:#d3a94f;
  --gold-soft:#e8c877;
  --gold-dim:rgba(211,169,79,.16);
  --text:#ece9e2;
  --muted:#a9a5a0;
  --line:rgba(255,255,255,.09);
  --radius:14px;
  --font-display:'Cormorant Garamond',Georgia,'Times New Roman',serif;
  --font-body:'Inter',-apple-system,'Segoe UI',Helvetica,Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(1100px 520px at 12% -4%, rgba(211,169,79,.07), transparent 60%),
    radial-gradient(900px 520px at 88% 8%, rgba(211,169,79,.05), transparent 60%),
    radial-gradient(1200px 800px at 50% 110%, rgba(211,169,79,.04), transparent 60%);
}
img{max-width:100%;display:block}
a{color:var(--gold);text-decoration:none}
a:hover{color:var(--gold-soft)}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .35s ease,box-shadow .35s ease,border-color .35s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{background:rgba(11,11,13,.92);backdrop-filter:blur(12px);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;max-width:1240px;margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand-mark{
  width:42px;height:42px;border:1px solid var(--gold);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-size:20px;color:var(--gold);letter-spacing:1px;
}
.brand-name{font-family:var(--font-display);font-size:22px;letter-spacing:.5px;line-height:1.2}
.brand-name small{display:block;font-family:var(--font-body);font-size:11px;letter-spacing:3px;color:var(--muted);text-transform:uppercase}
.nav{display:flex;gap:28px;align-items:center}
.nav a{color:var(--text);font-size:15px;letter-spacing:.4px;position:relative;padding:4px 0}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--gold);transition:width .3s ease}
.nav a:hover::after,.nav a.active::after{width:100%}
.nav a.active{color:var(--gold)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;color:var(--text);font-size:22px;padding:6px 12px;cursor:pointer}
.header-cta{
  border:1px solid var(--gold);color:var(--gold);border-radius:999px;
  padding:9px 22px;font-size:14px;letter-spacing:1.2px;text-transform:uppercase;white-space:nowrap;
  transition:background .3s ease,color .3s ease;
}
.header-cta:hover{background:var(--gold);color:#0b0b0d}
@media(max-width:960px){
  .nav{position:fixed;top:0;right:0;bottom:0;width:min(78vw,320px);background:#101013;
    flex-direction:column;align-items:flex-start;justify-content:flex-start;padding:90px 32px;gap:20px;
    transform:translateX(100%);transition:transform .35s ease;border-left:1px solid var(--line)}
  .nav.open{transform:none}
  .nav-toggle{display:block}
  .header-cta{display:none}
}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:96vh;display:flex;align-items:center;overflow:hidden;padding:140px 0 90px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.38) saturate(.9);transform:scale(1.06)}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,11,13,.55) 0%,rgba(11,11,13,.35) 45%,var(--bg) 100%)}
#embers{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.hero-content{position:relative;z-index:2;max-width:1140px;margin:0 auto;padding:0 24px;width:100%}
.kicker{color:var(--gold);letter-spacing:4px;text-transform:uppercase;font-size:13px;margin-bottom:18px;display:flex;align-items:center;gap:12px}
.kicker::before{content:"";width:44px;height:1px;background:var(--gold);display:inline-block}
.hero h1{
  font-family:var(--font-display);font-weight:500;
  font-size:clamp(44px,7vw,84px);line-height:1.06;letter-spacing:.5px;margin-bottom:22px;
}
.hero h1 em{color:var(--gold);font-style:italic}
.hero p.lede{max-width:620px;color:#d9d5cf;font-size:19px;margin-bottom:34px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:56px}
.btn{
  display:inline-block;padding:15px 34px;border-radius:999px;font-size:15px;letter-spacing:1.4px;
  text-transform:uppercase;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;
}
.btn-gold{background:linear-gradient(120deg,var(--gold-soft),var(--gold));color:#141310;font-weight:600}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(211,169,79,.28);color:#141310}
.btn-ghost{border:1px solid rgba(255,255,255,.35);color:var(--text)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.hero-stats{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:30px;max-width:760px}
.stat{padding:0 38px 0 0;margin-right:38px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none;margin-right:0}
.stat-num{font-family:var(--font-display);font-size:44px;color:var(--gold);line-height:1}
.stat-label{font-size:13px;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted);margin-top:6px}

/* ---------- Sections ---------- */
section{padding:96px 0;position:relative;z-index:1}
.section-alt{background:var(--bg-2)}
.eyebrow{color:var(--gold);letter-spacing:3.5px;text-transform:uppercase;font-size:13px;margin-bottom:14px}
h2.section-title{font-family:var(--font-display);font-size:clamp(34px,4.4vw,54px);font-weight:500;line-height:1.12;margin-bottom:18px}
h2.section-title em{color:var(--gold);font-style:italic}
.section-sub{color:var(--muted);max-width:680px;margin-bottom:52px;font-size:18px}

/* Reveal on scroll */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s ease,transform .8s ease}
.reveal.visible{opacity:1;transform:none}
.reveal-delay-1{transition-delay:.12s}
.reveal-delay-2{transition-delay:.24s}
.reveal-delay-3{transition-delay:.36s}

/* ---------- Cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
@media(max-width:860px){.grid-3,.grid-2{grid-template-columns:1fr}}
.card{
  background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.card:hover{transform:translateY(-8px);border-color:rgba(211,169,79,.45);box-shadow:0 24px 50px rgba(0,0,0,.5)}
.card img{height:210px;width:100%;object-fit:cover}
.card-body{padding:28px}
.card-body h3{font-family:var(--font-display);font-size:26px;font-weight:500;margin-bottom:10px}
.card-body h3 a{color:var(--text)}
.card-body h3 a:hover{color:var(--gold)}
.card-body p{color:var(--muted);font-size:15.5px;margin-bottom:16px}
.card-link{font-size:14px;letter-spacing:1.2px;text-transform:uppercase}

/* ---------- Split layout ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
@media(max-width:860px){.split{grid-template-columns:1fr;gap:36px}}
.split img{border-radius:var(--radius);border:1px solid var(--line);box-shadow:0 30px 60px rgba(0,0,0,.45)}
.quote{border-left:2px solid var(--gold);padding:6px 0 6px 26px;margin:28px 0;font-family:var(--font-display);font-size:24px;font-style:italic;color:#e6e1d7;line-height:1.5}
.quote cite{display:block;margin-top:12px;font-family:var(--font-body);font-style:normal;font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--gold)}

/* ---------- Steps ---------- */
.step{display:flex;gap:22px}
.step-num{
  flex:0 0 58px;height:58px;border:1px solid var(--gold);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-size:24px;color:var(--gold);
}
.step h3{font-family:var(--font-display);font-size:25px;font-weight:500;margin-bottom:8px}
.step p{color:var(--muted);font-size:16px}

/* ---------- Testimonials ---------- */
.testimonial{background:var(--bg-3);border:1px solid var(--line);border-radius:var(--radius);padding:34px}
.testimonial .stars{color:var(--gold);letter-spacing:4px;margin-bottom:14px;font-size:15px}
.testimonial p{font-family:var(--font-display);font-size:21px;font-style:italic;line-height:1.55;margin-bottom:18px;color:#e8e3d8}
.testimonial .who{font-size:13px;letter-spacing:1.8px;text-transform:uppercase;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;background:var(--bg-3);overflow:hidden}
.faq-q{width:100%;background:none;border:none;color:var(--text);font-family:var(--font-body);font-size:17px;font-weight:500;text-align:left;padding:22px 26px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-q:hover{color:var(--gold)}
.faq-q .plus{color:var(--gold);font-size:24px;line-height:1;transition:transform .3s ease}
.faq-item.open .faq-q .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a p{padding:0 26px 24px;color:var(--muted);font-size:16px}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(135deg,#141312 0%,#1c1810 60%,#241c0d 100%);
  border:1px solid rgba(211,169,79,.3);border-radius:20px;
  padding:64px 56px;text-align:center;position:relative;overflow:hidden;
}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 50% -40px,rgba(211,169,79,.18),transparent 70%);pointer-events:none}
.cta-band h2{font-family:var(--font-display);font-size:clamp(32px,4vw,48px);font-weight:500;margin-bottom:14px;position:relative}
.cta-band p{color:var(--muted);max-width:560px;margin:0 auto 32px;position:relative}
.phone-big{font-family:var(--font-display);font-size:clamp(30px,4.4vw,46px);color:var(--gold);display:block;margin-bottom:26px;position:relative;letter-spacing:1px}
@media(max-width:640px){.cta-band{padding:48px 28px}}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--line);padding:64px 0 34px;background:#08080a;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:44px}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr}}
footer h4{font-size:13px;letter-spacing:2.5px;text-transform:uppercase;color:var(--gold);margin-bottom:18px}
footer p,footer li{color:var(--muted);font-size:15px}
footer ul{list-style:none}
footer li{margin-bottom:10px}
footer a{color:var(--muted)}
footer a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid var(--line);padding-top:26px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13.5px;color:#6f6c68}

/* ---------- Page hero ---------- */
.page-hero{padding:190px 0 80px;text-align:center;position:relative;overflow:hidden}
.page-hero h1{font-family:var(--font-display);font-size:clamp(42px,6vw,68px);font-weight:500;margin-bottom:14px}
.page-hero h1 em{color:var(--gold);font-style:italic}
.page-hero p{color:var(--muted);max-width:640px;margin:0 auto;font-size:18px}

/* misc */
.area-tag{display:inline-block;border:1px solid rgba(211,169,79,.4);color:var(--gold-soft);border-radius:999px;padding:8px 22px;margin:0 10px 14px 0;font-size:15px;letter-spacing:.6px}
.check-list{list-style:none;margin:22px 0}
.check-list li{padding:10px 0 10px 36px;position:relative;color:#d9d5cf}
.check-list li::before{content:"✓";position:absolute;left:2px;color:var(--gold);font-weight:700}
.note{font-size:13.5px;color:#6f6c68}