@import url('https://fonts.googleapis.com/css2?family=Big+Shoulders:wght@400;600;700;800&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --ink:#1B1F23;
  --ink-soft:#262B31;
  --copper:#C76B3F;
  --copper-bright:#E08A5C;
  --coil:#3FA7C7;
  --cream:#EDE7DA;
  --paper:#F7F5F0;
  --amber:#E8A23D;
  --line:#3A4047;
  --line-light:#D8D2C3;
  --text-dim:#9AA1A8;
  --radius:2px;
  --max:1080px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'IBM Plex Sans',system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,.display{
  font-family:'Big Shoulders',sans-serif;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:0.01em;
  line-height:0.95;
  margin:0;
}

.mono{
  font-family:'IBM Plex Mono',monospace;
  letter-spacing:0.08em;
  text-transform:uppercase;
}

a{color:inherit;text-decoration:none;}
a:focus-visible,button:focus-visible{outline:2px solid var(--coil);outline-offset:3px;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;}
}

.wrap{max-width:var(--max);margin:0 auto;padding:0 28px;}

/* ===== NAV ===== */
.nav{
  position:sticky;top:0;z-index:40;
  background:var(--ink);
  border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;}
.brand{
  display:flex;align-items:center;gap:10px;
  font-family:'Big Shoulders',sans-serif;
  font-weight:800;font-size:22px;letter-spacing:0.02em;
  color:var(--paper);
}
.brand .dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--amber);
  box-shadow:0 0 0 3px rgba(232,162,61,0.18);
}
.navlinks{display:flex;gap:32px;align-items:center;}
.navlinks a{
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;letter-spacing:0.1em;text-transform:uppercase;
  color:var(--text-dim);
  transition:color .15s ease;
}
.navlinks a:hover{color:var(--cream);}
.nav-cta{
  background:var(--copper);
  color:var(--paper) !important;
  padding:9px 16px;
  border-radius:var(--radius);
  font-weight:600;
}
.nav-cta:hover{background:var(--copper-bright);}

/* ===== HERO ===== */
.hero{
  background:
    radial-gradient(ellipse 900px 500px at 80% -10%, rgba(63,167,199,0.10), transparent 60%),
    var(--ink);
  color:var(--paper);
  padding:88px 0 64px;
  border-bottom:1px solid var(--line);
}
.hero .wrap{
  display:grid;
  grid-template-columns:1.15fr 0.85fr;
  gap:56px;
  align-items:center;
}
.eyebrow{
  color:var(--copper-bright);
  font-size:12px;
  margin-bottom:18px;
  display:flex;align-items:center;gap:10px;
}
.eyebrow::before{
  content:'';width:22px;height:1px;background:var(--copper-bright);
}
.hero h1{
  font-size:clamp(40px,5.4vw,64px);
  color:var(--paper);
}
.hero h1 span{color:var(--coil);}
.hero p.lead{
  font-size:18px;line-height:1.55;
  color:var(--text-dim);
  margin:24px 0 32px;
  max-width:480px;
}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;}
.btn{
  font-family:'IBM Plex Mono',monospace;
  font-size:13px;letter-spacing:0.06em;text-transform:uppercase;
  padding:14px 22px;
  border-radius:var(--radius);
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, background .15s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--amber);color:var(--ink);}
.btn-primary:hover{background:#f0b35c;}
.btn-ghost{border-color:var(--line);color:var(--paper);}
.btn-ghost:hover{border-color:var(--coil);}

/* ===== GAUGE (signature element) ===== */
.gauge-card{
  background:var(--ink-soft);
  border:1px solid var(--line);
  border-radius:6px;
  padding:28px;
}
.gauge-readout{
  display:flex;justify-content:space-between;align-items:baseline;
  margin-bottom:6px;
}
.gauge-readout .label{font-size:11px;color:var(--text-dim);}
.gauge-readout .state{font-size:13px;color:var(--coil);font-weight:500;}
.gauge-svg{width:100%;height:auto;display:block;}
.needle{transform-origin:150px 150px;animation:sweep 6s ease-in-out infinite;}
@keyframes sweep{
  0%{transform:rotate(-58deg);}
  28%{transform:rotate(58deg);}
  45%{transform:rotate(58deg);}
  60%{transform:rotate(-2deg);}
  100%{transform:rotate(-2deg);}
}
.pulse-dot{animation:blink 6s ease-in-out infinite;}
@keyframes blink{
  0%,28%{opacity:0;}
  32%,45%{opacity:1;}
  60%,100%{opacity:0;}
}
.gauge-foot{
  display:flex;justify-content:space-between;
  margin-top:18px;padding-top:16px;
  border-top:1px solid var(--line);
}
.gauge-foot div{text-align:center;flex:1;}
.gauge-foot .n{font-family:'Big Shoulders',sans-serif;font-size:26px;font-weight:700;color:var(--paper);}
.gauge-foot .l{font-size:10px;color:var(--text-dim);letter-spacing:0.08em;margin-top:2px;}

/* ===== SECTION GENERIC ===== */
section{padding:84px 0;}
.section-head{max-width:620px;margin-bottom:52px;}
.section-head .eyebrow{color:var(--copper);}
.section-head .eyebrow::before{background:var(--copper);}
.section-head h2{
  font-size:clamp(30px,3.6vw,42px);
  color:var(--ink);
}
.section-head p{
  font-size:16px;color:#52585f;line-height:1.6;margin-top:14px;
}

/* PROBLEM */
.problem{background:var(--cream);border-bottom:1px solid var(--line-light);}
.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-light);border:1px solid var(--line-light);}
.problem-card{background:var(--cream);padding:32px 28px;}
.problem-card .zone{
  font-size:11px;color:var(--copper);margin-bottom:14px;
}
.problem-card p{font-size:15px;line-height:1.6;color:#3a3f44;margin:0;}

/* HOW IT WORKS — gauge zones */
.zones{display:grid;grid-template-columns:repeat(3,1fr);gap:0;position:relative;}
.zone-card{
  border:1px solid var(--line-light);
  border-left:none;
  padding:30px 26px;
  position:relative;
}
.zone-card:first-child{border-left:1px solid var(--line-light);}
.zone-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:11px;padding:5px 10px;border-radius:20px;
  margin-bottom:18px;
}
.zone-tag.miss{background:rgba(199,107,63,0.12);color:var(--copper);}
.zone-tag.recover{background:rgba(232,162,61,0.14);color:#a1700f;}
.zone-tag.booked{background:rgba(63,167,199,0.12);color:#1d7e9c;}
.zone-card h3{font-size:22px;margin-bottom:10px;color:var(--ink);}
.zone-card p{font-size:14.5px;color:#52585f;line-height:1.6;margin:0;}
.zone-arrow{
  position:absolute;right:-13px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;
  background:var(--paper);border:1px solid var(--line-light);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--text-dim);z-index:2;
}

/* WHY HVAC */
.why{background:var(--ink);color:var(--paper);}
.why .section-head .eyebrow{color:var(--coil);}
.why .section-head .eyebrow::before{background:var(--coil);}
.why .section-head h2{color:var(--paper);}
.why .section-head p{color:var(--text-dim);}
.why-list{display:grid;grid-template-columns:1fr 1fr;gap:28px 48px;}
.why-item{display:flex;gap:16px;}
.why-item .mark{
  font-family:'Big Shoulders',sans-serif;font-size:26px;font-weight:700;
  color:var(--coil);width:34px;flex-shrink:0;
}
.why-item h4{font-family:'IBM Plex Sans';font-weight:600;font-size:16px;margin:0 0 6px;color:var(--paper);}
.why-item p{font-size:14.5px;color:var(--text-dim);line-height:1.6;margin:0;}

/* CTA BAND */
.ctaband{background:var(--amber);color:var(--ink);}
.ctaband .wrap{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  flex-wrap:wrap;padding:56px 28px;
}
.ctaband h2{font-size:clamp(26px,3.4vw,36px);max-width:560px;}
.ctaband .btn-primary{background:var(--ink);color:var(--paper);}
.ctaband .btn-primary:hover{background:var(--ink-soft);}

/* FOOTER */
footer{background:var(--ink);border-top:1px solid var(--line);padding:40px 0;}
footer .wrap{
  display:flex;justify-content:space-between;align-items:center;
  flex-wrap:wrap;gap:16px;
}
footer .brand{font-size:16px;}
.footlinks{display:flex;gap:24px;}
.footlinks a{font-size:12px;color:var(--text-dim);font-family:'IBM Plex Mono',monospace;letter-spacing:0.06em;}
.footlinks a:hover{color:var(--cream);}

@media (max-width:860px){
  .hero .wrap{grid-template-columns:1fr;}
  .navlinks{display:none;}
  .problem-grid{grid-template-columns:1fr;}
  .zones{grid-template-columns:1fr;}
  .zone-card{border-left:1px solid var(--line-light) !important;border-top:none;}
  .zone-arrow{display:none;}
  .why-list{grid-template-columns:1fr;}
}

/* ===== LEGAL PAGES ===== */
.legal{padding:72px 0 100px;}
.legal .wrap{max-width:740px;}
.legal h1{font-size:38px;margin-bottom:8px;}
.legal .updated{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--text-dim);margin-bottom:48px;display:block;}
.legal h2{
  font-family:'IBM Plex Sans';text-transform:none;font-weight:700;
  font-size:18px;margin:40px 0 12px;color:var(--ink);
}
.legal p, .legal li{font-size:15px;line-height:1.7;color:#3a3f44;}
.legal ul{padding-left:20px;}
.legal a.inline{color:var(--copper);text-decoration:underline;}