/* ===== CH Texas HVAC LLC ===== */
:root{
  --blue:#0a5cab;
  --blue-deep:#06376a;
  --blue-darker:#062b53;
  --orange:#f5821f;
  --orange-bright:#ff9526;
  --cream:#f4f8fc;
  --ink:#16202e;
  --muted:#566173;
  --line:#e1e8f0;
  --white:#ffffff;
  --shadow:0 18px 50px -20px rgba(6,55,106,.35);
  --radius:18px;
  --maxw:1160px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);
  background:var(--cream);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3,.brand-text{font-family:'Poppins',sans-serif;line-height:1.12;letter-spacing:-.01em}
.center{text-align:center}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-weight:600;font-family:'Inter',sans-serif;
  padding:.85rem 1.5rem;border-radius:999px;border:2px solid transparent;
  cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  font-size:.98rem;white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn-sm{padding:.55rem 1.1rem;font-size:.9rem}
.btn-lg{padding:1rem 1.9rem;font-size:1.05rem}
.btn-block{display:flex;width:100%;margin-top:1.2rem}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 10px 24px -10px rgba(245,130,31,.8)}
.btn-primary:hover{background:var(--orange-bright)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.55);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,.22)}
.btn-ghost-dark{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost-dark:hover{background:rgba(255,255,255,.15)}
.btn-outline{background:transparent;color:var(--blue);border-color:var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff}

/* ===== Top bar ===== */
.topbar{background:var(--blue-deep);color:rgba(255,255,255,.9);font-size:.85rem}
.topbar-inner{display:flex;align-items:center;justify-content:center;gap:1.8rem;height:38px;flex-wrap:wrap}
.topbar-item{display:inline-flex;align-items:center;gap:.4rem;white-space:nowrap}
.topbar-phone{font-weight:600;color:#fff}
.topbar-phone:hover{color:var(--orange-bright)}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(244,248,252,.88);
  backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:.7rem}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--blue),var(--blue-deep));
  color:#fff;font-size:1.5rem;box-shadow:0 8px 18px -8px rgba(10,92,171,.7);
}
.brand-text{display:flex;flex-direction:column;font-weight:700;font-size:1.2rem;color:var(--blue-deep);line-height:1.1}
.brand-text small{font-family:'Inter',sans-serif;font-weight:500;font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:1.6rem;list-style:none}
.nav-links a{font-weight:500;color:var(--ink);font-size:.97rem;transition:color .2s}
.nav-links a:hover{color:var(--orange)}
.nav-links .btn{color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:26px;height:3px;background:var(--blue-deep);border-radius:3px;transition:.3s}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:80vh;display:flex;align-items:center;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,var(--blue) 0%,var(--blue-deep) 55%,var(--blue-darker) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:radial-gradient(circle at 1px 1px,rgba(255,255,255,.18) 1px,transparent 0);
  background-size:26px 26px;
}
.hero::after{
  content:"";position:absolute;top:-120px;right:-120px;width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(245,130,31,.45) 0%,rgba(245,130,31,0) 70%);
}
.hero-overlay{display:none}
.hero-content{position:relative;padding:90px 24px;max-width:760px}
.eyebrow{text-transform:uppercase;letter-spacing:.2em;font-size:.8rem;font-weight:700;color:var(--orange-bright);margin-bottom:1rem}
.eyebrow-dark{color:var(--orange)}
.hero h1{font-size:clamp(2.5rem,6vw,4.4rem);font-weight:700;margin-bottom:1.2rem}
.hero h1 span{color:var(--orange-bright)}
.hero-sub{font-size:1.2rem;max-width:600px;color:rgba(255,255,255,.92);margin-bottom:2rem}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:3rem}
.hero-stats{display:flex;gap:2.5rem;list-style:none;flex-wrap:wrap}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-family:'Poppins',sans-serif;font-size:1.6rem;color:#fff}
.hero-stats span{font-size:.85rem;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.75)}

/* ===== Marquee strip ===== */
.strip{background:var(--orange);color:#fff;overflow:hidden;padding:.9rem 0}
.strip-track{display:flex;gap:1.4rem;white-space:nowrap;animation:scroll 28s linear infinite;width:max-content}
.strip-track span{font-family:'Poppins',sans-serif;font-weight:600;font-size:1.02rem;letter-spacing:.04em;color:#fff}
.strip-track span:nth-child(even){color:rgba(255,255,255,.65)}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ===== Sections ===== */
.section{padding:96px 0}
.section-alt{background:var(--white)}
.section-head{max-width:680px;margin:0 auto 56px;text-align:center}
.section-head h2{font-size:clamp(2rem,4vw,2.9rem);color:var(--blue-deep);margin-bottom:1rem}
.lead{font-size:1.12rem;color:var(--muted)}

/* ===== Service cards ===== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;display:flex;flex-direction:column;gap:.7rem;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.card-icon{
  width:58px;height:58px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:1.7rem;background:linear-gradient(135deg,#e8f1fb,#d4e6f8);margin-bottom:.4rem;
}
.card h3{font-size:1.32rem;color:var(--blue-deep)}
.card p{color:var(--muted);font-size:.98rem}
.section-alt .card{background:var(--cream)}

/* ===== Split sections ===== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split-media{position:relative}
.split-text h2{font-size:clamp(2rem,4vw,2.8rem);color:var(--blue-deep);margin-bottom:1.1rem}
.split-text p{color:var(--muted);margin-bottom:1rem}
.checklist{list-style:none;margin:1.5rem 0 2rem;display:grid;gap:.7rem}
.checklist li{position:relative;padding-left:2rem;font-weight:500;color:var(--ink)}
.checklist li::before{content:"✔";position:absolute;left:0;top:0;color:#fff;background:var(--orange);width:1.4rem;height:1.4rem;border-radius:50%;font-size:.75rem;display:flex;align-items:center;justify-content:center}

/* ===== About card ===== */
.about-card{
  position:relative;background:linear-gradient(150deg,var(--blue) 0%,var(--blue-deep) 100%);
  color:#fff;border-radius:var(--radius);padding:48px 40px;box-shadow:var(--shadow);overflow:hidden;text-align:center;
}
.about-snow{position:absolute;top:-30px;right:-10px;font-size:9rem;color:rgba(255,255,255,.08);line-height:1}
.about-badge{display:inline-block;background:var(--orange);color:#fff;font-weight:700;letter-spacing:.08em;font-size:.8rem;padding:.4rem 1rem;border-radius:999px;margin-bottom:1.4rem}
.about-card h3{font-size:1.7rem;margin-bottom:.5rem}
.about-card>p{color:rgba(255,255,255,.85);margin-bottom:1.6rem}
.about-card>p strong{color:#fff;font-size:1.05rem}
.about-card ul{list-style:none;display:grid;gap:.7rem;text-align:left;max-width:240px;margin:0 auto}
.about-card ul li{position:relative;padding-left:1.8rem;color:rgba(255,255,255,.92);font-weight:500}
.about-card ul li::before{content:"❄";position:absolute;left:0;color:var(--orange-bright)}

/* ===== Benefits ===== */
.benefits{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.benefit{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:transform .25s,box-shadow .25s}
.benefit:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.benefit-icon{font-size:2.2rem;margin-bottom:.8rem}
.benefit h3{color:var(--blue-deep);font-size:1.18rem;margin-bottom:.4rem}
.benefit p{color:var(--muted);font-size:.95rem}

/* ===== CTA / Contact ===== */
.cta{background:linear-gradient(135deg,var(--blue-deep) 0%,var(--blue-darker) 100%);color:#fff}
.cta .eyebrow{color:var(--orange-bright)}
.cta h2{color:#fff;font-size:clamp(2rem,4vw,2.9rem);margin-bottom:1.1rem}
.cta .split-text p{color:rgba(255,255,255,.85)}
.contact-list{list-style:none;margin:1.8rem 0;display:grid;gap:1.2rem}
.contact-list li{display:flex;gap:1rem;align-items:flex-start}
.ci{font-size:1.3rem;flex-shrink:0}
.contact-list strong{display:block;color:#fff;font-weight:600;margin-bottom:.1rem}
.contact-list div{color:rgba(255,255,255,.82);font-size:.97rem}
.contact-list a{color:var(--orange-bright)}
.contact-list a:hover{text-decoration:underline}
.contact-actions{display:flex;gap:1rem;flex-wrap:wrap;margin-top:1.5rem}

/* Hours / highlights card */
.hours-card{background:var(--white);color:var(--ink);border-radius:var(--radius);padding:36px 32px;box-shadow:0 30px 60px -25px rgba(0,0,0,.5)}
.hours-card h3{color:var(--blue-deep);font-size:1.35rem;margin-bottom:1.2rem}
.hours-card ul{list-style:none;display:grid;gap:.9rem}
.hours-card ul li{display:flex;align-items:center;gap:.8rem;font-weight:500;color:var(--ink);border-bottom:1px solid var(--line);padding-bottom:.9rem}
.hours-card ul li:last-child{border-bottom:0;padding-bottom:0}
.hours-card ul li span{font-size:1.2rem}

/* ===== Footer ===== */
.site-footer{background:var(--blue-darker);color:rgba(255,255,255,.7);padding:48px 0}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:1.5rem;text-align:center}
.footer-brand{display:flex;align-items:center;gap:.8rem}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.6)}
.footer-nav{display:flex;gap:1.6rem;flex-wrap:wrap;justify-content:center}
.footer-nav a{font-weight:500;color:rgba(255,255,255,.82);font-size:.95rem}
.footer-nav a:hover{color:var(--orange-bright)}
.footer-copy{font-size:.85rem;color:rgba(255,255,255,.5)}

/* ===== Sticky mobile call button ===== */
.call-fab{
  position:fixed;bottom:20px;right:20px;z-index:60;display:none;
  width:58px;height:58px;border-radius:50%;align-items:center;justify-content:center;
  background:var(--orange);color:#fff;font-size:1.5rem;
  box-shadow:0 12px 28px -8px rgba(245,130,31,.9);
}
.call-fab:hover{background:var(--orange-bright)}

/* ===== Reveal on scroll ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in-view{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .strip-track{animation:none}
  html{scroll-behavior:auto}
}

/* ===== Responsive ===== */
@media(max-width:900px){
  .nav-toggle{display:flex}
  .nav-links{position:fixed;inset:74px 0 auto 0;flex-direction:column;background:var(--cream);padding:1.5rem 24px;gap:1.2rem;border-bottom:1px solid var(--line);transform:translateY(-130%);transition:transform .3s ease;align-items:flex-start}
  .nav-links.open{transform:translateY(0)}
  .cards{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:48px}
  .benefits{grid-template-columns:1fr 1fr}
  .call-fab{display:flex}
}
@media(max-width:560px){
  .section{padding:64px 0}
  .topbar-inner{gap:1rem;font-size:.78rem}
  .topbar-item:nth-child(2){display:none}
  .hero{min-height:auto;padding:30px 0}
  .hero-stats{gap:1.6rem}
  .cards{grid-template-columns:1fr;max-width:440px;margin:0 auto}
  .benefits{grid-template-columns:1fr}
  .footer-brand{flex-direction:column}
}