/* ============================================================
   Comfort Air LLC — semi-premium HVAC revamp
   Palette built up from a heating(brass) + cooling(steel) duality
   ============================================================ */
:root{
  --ink:#0d1b2a;          /* deep navy */
  --ink-2:#122a3f;
  --ink-3:#0a1622;
  --paper:#f6f1e8;        /* warm cream */
  --paper-2:#efe7d8;
  --card:#ffffff;
  --brass:#c69749;        /* heat accent */
  --brass-deep:#a97c2f;
  --steel:#5f93aa;        /* cool accent */
  --steel-deep:#3d6d83;
  --text:#1c2732;
  --text-soft:#54626f;
  --line:#e4dccd;

  --nav-h:74px;
  --wrap:1180px;
  --r:16px;
  --shadow:0 22px 60px -28px rgba(13,27,42,.45);
  --font-display:"Fraunces",Georgia,serif;
  --font-body:"Instrument Sans",system-ui,sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  color:var(--text);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
em{font-style:italic}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 clamp(20px,5vw,40px)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  font-family:var(--font-body);font-weight:600;font-size:.95rem;
  padding:.82em 1.4em;border-radius:100px;cursor:pointer;border:1.5px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
  white-space:nowrap;letter-spacing:.01em;
}
.btn--lg{padding:.95em 1.7em;font-size:1rem}
.btn--solid{background:var(--brass);color:#231604;box-shadow:0 10px 24px -12px rgba(198,151,73,.9)}
.btn--solid:hover{background:var(--brass-deep);color:#fff;transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn--ghost:hover{border-color:var(--ink);background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn--ghost-light{border-color:rgba(255,255,255,.35);color:#fff}
.btn--ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:50;height:var(--nav-h);
  background:rgba(246,241,232,.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav__inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:1rem}
.brand{display:flex;align-items:center;gap:.65rem}
.brand__mark{display:grid;place-items:center;flex:none}
.brand__type{display:flex;flex-direction:column;line-height:1.05}
.brand__name{font-family:var(--font-display);font-weight:600;font-size:1.22rem;color:var(--ink);letter-spacing:.005em}
.brand__sub{font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:var(--text-soft);font-weight:500}
.nav__links{display:flex;gap:2rem}
.nav__links a{font-weight:500;font-size:.95rem;color:var(--text-soft);position:relative}
.nav__links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--brass);transition:width .25s ease}
.nav__links a:hover{color:var(--ink)}
.nav__links a:hover::after{width:100%}
.nav__actions{display:flex;align-items:center;gap:.75rem}
.nav__cta{font-size:.9rem;padding:.65em 1.1em}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;padding:8px;cursor:pointer}
.nav__toggle span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.nav__toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-menu{display:none;flex-direction:column;gap:.25rem;padding:1rem clamp(20px,5vw,40px) 1.5rem;background:var(--paper);border-bottom:1px solid var(--line)}
.mobile-menu[hidden]{display:none}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:.7rem 0;font-weight:500;font-size:1.05rem;border-bottom:1px solid var(--line)}
.mobile-menu a.btn{margin-top:.6rem;border-bottom:0;color:#231604}

/* ---------- hero ---------- */
.hero{position:relative;min-height:calc(100svh - var(--nav-h));display:flex;align-items:center;overflow:hidden;padding:clamp(1.5rem,4vh,3rem) 0}
.hero__bg{position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(1000px 620px at 78% -10%, rgba(95,147,170,.22), transparent 60%),
    radial-gradient(760px 520px at 8% 108%, rgba(198,151,73,.18), transparent 62%),
    var(--paper);
}
.hero__bg::after{content:"";position:absolute;inset:0;opacity:.4;
  background-image:radial-gradient(rgba(13,27,42,.05) 1px,transparent 1px);background-size:22px 22px}
.hero__grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4.5rem);align-items:center;width:100%}
.hero__copy{display:flex;flex-direction:column;gap:1.35rem;min-width:0;max-width:100%}
.eyebrow{display:inline-flex;flex-wrap:wrap;align-items:center;gap:.55rem;max-width:100%;font-size:.78rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--steel-deep)}
.eyebrow__dot{width:8px;height:8px;border-radius:50%;background:var(--brass);box-shadow:0 0 0 4px rgba(198,151,73,.2)}
.hero__title{font-family:var(--font-display);font-weight:600;color:var(--ink);
  font-size:clamp(2.6rem,6.4vw,4.7rem);line-height:1.02;letter-spacing:-.015em}
.hero__title em{color:var(--brass-deep)}
.hero__lead{font-size:clamp(1.02rem,1.7vw,1.2rem);color:var(--text-soft);max-width:34ch}
.hero__cta{display:flex;flex-wrap:wrap;gap:.8rem}
.proof{display:flex;align-items:center;gap:.7rem;margin-top:.2rem}
.proof__stars{color:var(--brass);letter-spacing:.12em;font-size:1.05rem}
.proof__text{font-size:.95rem;color:var(--text-soft)}
.proof__text strong{color:var(--ink)}

.hero__media{display:flex;justify-content:center}
.hero__frame{position:relative;width:100%;max-width:460px;border-radius:22px;overflow:visible}
.hero__frame img{border-radius:22px;box-shadow:var(--shadow);border:6px solid #fff;aspect-ratio:4/3;object-fit:cover;width:100%}
.hero__badge{position:absolute;right:-14px;bottom:-18px;background:var(--ink);color:#fff;border-radius:16px;
  padding:.85rem 1.05rem;display:flex;flex-direction:column;align-items:center;line-height:1;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.08)}
.hero__badge-num{font-family:var(--font-display);font-size:1.7rem;font-weight:700}
.hero__badge-stars{color:var(--brass);font-size:.8rem;letter-spacing:.08em;margin:.3rem 0}
.hero__badge-label{font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:#a9b6c2}

/* ---------- strip ---------- */
.strip{background:var(--ink);color:#c8d4de}
.strip__inner{display:flex;flex-wrap:wrap;gap:.9rem 1.3rem;justify-content:center;align-items:center;padding:1rem 0;
  font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;font-weight:500}
.strip i{color:var(--brass);font-style:normal}

/* ---------- section shell ---------- */
.section{padding:clamp(4rem,9vh,7rem) 0}
.section--tint{background:var(--paper-2)}
.section--dark{background:var(--ink);color:#e7eef4}
.section__head{max-width:660px;margin:0 auto clamp(2.5rem,5vh,3.5rem);text-align:center;display:flex;flex-direction:column;gap:.85rem;align-items:center}
.kicker{font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--brass-deep)}
.kicker--light{color:var(--brass)}
.section__title{font-family:var(--font-display);font-weight:600;color:var(--ink);font-size:clamp(1.9rem,3.8vw,2.9rem);line-height:1.08;letter-spacing:-.01em}
.section--dark .section__title{color:#fff}
.section__intro{color:var(--text-soft);font-size:1.05rem;max-width:52ch}
.section--dark .section__intro{color:#aebcca}

/* ---------- services ---------- */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:1.15rem}
.svc{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.7rem 1.6rem;
  display:flex;flex-direction:column;gap:.6rem;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
.svc:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--brass)}
.svc__ico{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;font-size:1.35rem;
  background:linear-gradient(140deg,rgba(198,151,73,.16),rgba(95,147,170,.16));color:var(--ink);margin-bottom:.3rem}
.svc h3{font-family:var(--font-display);font-weight:600;font-size:1.28rem;color:var(--ink)}
.svc p{color:var(--text-soft);font-size:.96rem}
.svc__meta{margin-top:auto;padding-top:.6rem;font-size:.78rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--steel-deep)}

/* ---------- work ---------- */
.work__grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.work__copy{display:flex;flex-direction:column;gap:1.1rem;align-items:flex-start}
.work__list{list-style:none;display:flex;flex-direction:column;gap:.6rem;margin:.3rem 0 .4rem}
.work__list li{display:flex;gap:.7rem;align-items:flex-start;color:var(--text-soft);font-size:1rem}
.work__list li span{color:#fff;background:var(--steel-deep);border-radius:50%;width:22px;height:22px;font-size:.7rem;display:grid;place-items:center;flex:none;margin-top:.2rem}
.work__gallery{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:auto auto;gap:1rem}
.work__shot{border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);border:5px solid #fff}
.work__shot img{width:100%;height:100%;object-fit:cover}
.work__shot--tall{grid-row:span 2}
.work__shot--tall img{min-height:100%}

/* ---------- stats ---------- */
.stats{background:var(--ink-3);color:#fff;padding:clamp(3rem,6vh,4.5rem) 0}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;text-align:center}
.stat{display:flex;flex-direction:column;gap:.4rem;position:relative}
.stat:not(:last-child)::after{content:"";position:absolute;right:-.75rem;top:50%;transform:translateY(-50%);height:46px;width:1px;background:rgba(255,255,255,.12)}
.stat__num{font-family:var(--font-display);font-weight:700;font-size:clamp(2rem,4vw,2.9rem);color:#fff;line-height:1}
.stat__star{color:var(--brass);font-size:.7em;margin-left:.1em}
.stat__label{font-size:.85rem;color:#9db0c0;letter-spacing:.02em}

/* ---------- reviews ---------- */
.reviews{columns:3;column-gap:1.15rem}
.review{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.6rem;
  break-inside:avoid;margin-bottom:1.15rem;box-shadow:0 10px 30px -22px rgba(13,27,42,.3)}
.review__stars{color:var(--brass);letter-spacing:.1em;margin-bottom:.7rem}
.review p{color:var(--text);font-size:.98rem;font-style:italic}
.review footer{margin-top:1rem;display:flex;flex-direction:column}
.review__name{font-weight:600;color:var(--ink)}
.review__tag{font-size:.78rem;color:var(--text-soft)}

/* ---------- visit ---------- */
.visit__grid{display:grid;grid-template-columns:1.3fr .7fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.visit__copy{display:flex;flex-direction:column;gap:1.1rem;align-items:flex-start}
.visit__lead{color:#aebcca;font-size:1.08rem;max-width:44ch}
.visit__rows{display:flex;flex-direction:column;gap:.8rem;width:100%;margin:.3rem 0}
.visit__row{display:flex;align-items:center;gap:1rem;padding:.9rem 1.1rem;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:14px;transition:background .2s}
a.visit__row:hover{background:rgba(255,255,255,.1)}
.visit__ico{width:40px;height:40px;border-radius:10px;background:var(--brass);color:#231604;display:grid;place-items:center;font-size:1.1rem;flex:none}
.visit__row span b{display:block;color:#fff;font-size:1.05rem}
.visit__row span small{color:#9db0c0;font-size:.85rem}
.visit__cta{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:.4rem}

.seal{background:linear-gradient(160deg,var(--ink-2),var(--ink-3));border:1px solid rgba(255,255,255,.1);
  border-radius:22px;padding:2.2rem 1.8rem;text-align:center;box-shadow:var(--shadow)}
.seal__stars{color:var(--brass);font-size:1.2rem;letter-spacing:.15em}
.seal__num{font-family:var(--font-display);font-weight:700;font-size:3.4rem;color:#fff;line-height:1;margin:.3rem 0}
.seal__label{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:#9db0c0}
.seal__rule{height:1px;background:rgba(255,255,255,.14);margin:1.4rem 0}
.seal__quote{font-family:var(--font-display);font-style:italic;color:#e7eef4;font-size:1.05rem;line-height:1.5}
.seal__cite{display:block;margin-top:.7rem;font-size:.8rem;color:#9db0c0}

/* ---------- finale ---------- */
.finale{background:var(--paper-2);padding:clamp(4rem,8vh,6rem) 0}
.finale__inner{text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem}
.finale h2{font-family:var(--font-display);font-weight:600;font-size:clamp(1.9rem,4vw,3rem);color:var(--ink);letter-spacing:-.01em}
.finale p{color:var(--text-soft);font-size:1.1rem}
.finale .btn{margin-top:.5rem}

/* ---------- footer ---------- */
.foot{background:var(--ink);color:#a9b6c2;padding:3rem 0 2rem}
.foot__inner{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1.5rem}
.foot__brand .brand__name{color:#fff;font-size:1.3rem}
.foot__brand p{font-size:.88rem;color:#8fa0b0;margin-top:.2rem}
.foot__links{display:flex;gap:1.5rem;flex-wrap:wrap}
.foot__links a{font-size:.92rem;color:#a9b6c2}
.foot__links a:hover{color:var(--brass)}
.foot__fine{width:100%;border-top:1px solid rgba(255,255,255,.1);padding-top:1.4rem;font-size:.82rem;color:#7d8ea0}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ============ RESPONSIVE ============ */
@media (max-width:960px){
  .nav__links{display:none}
  .nav__cta{display:none}
  .nav__toggle{display:flex}
  .hero{align-items:flex-start;padding-top:clamp(1.5rem,4vh,2.5rem)}
  .hero__grid{grid-template-columns:1fr;gap:1.8rem;text-align:center}
  .hero__copy{align-items:center}
  .hero__lead{max-width:46ch}
  .hero__cta,.proof{justify-content:center}
  .hero__media{max-width:340px;margin:.3rem auto 0}
  .services{grid-template-columns:repeat(2,1fr)}
  .work__grid,.visit__grid{grid-template-columns:1fr}
  .visit__copy{align-items:center;text-align:center}
  .visit__lead{max-width:none}
  .visit__cta{justify-content:center}
  .reviews{columns:2}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:2rem}
  .stat:not(:last-child)::after{display:none}
}
@media (max-width:560px){
  :root{--nav-h:64px}
  .services{grid-template-columns:1fr}
  .reviews{columns:1}
  .work__gallery{grid-template-columns:1fr}
  .work__shot--tall{grid-row:auto}
  .hero__title{font-size:clamp(2.4rem,10vw,3.2rem)}
  .foot__inner{flex-direction:column;align-items:flex-start;text-align:left}
}

@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.svc:hover{transform:none}
}