/* Copperline Auto Climate — main stylesheet
   Author: in-house / Troy, MI
   Last revised: July 2026 */

:root{
  --ink:#0b1a24;
  --ink-2:#12293a;
  --paper:#f6f4ef;
  --paper-2:#fffdf9;
  --line:rgba(11,26,36,.12);
  --copper:#b4541f;
  --copper-soft:#e2703a;
  --frost:#1d7f9c;
  --frost-soft:#63c2d8;
  --muted:#5c6b75;
  --radius:14px;
  --shadow-1:0 1px 2px rgba(11,26,36,.06),0 8px 24px rgba(11,26,36,.07);
  --shadow-2:0 18px 50px -18px rgba(11,26,36,.35);
  --maxw:1180px;
  --head:"Archivo",Helvetica,Arial,sans-serif;
  --body:"Public Sans",Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--body);font-size:17px;line-height:1.68;
  letter-spacing:.005em;
}
img{max-width:100%;display:block}
a{color:var(--frost);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--head);line-height:1.12;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,4.6vw,3.5rem);font-weight:800}
h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700}
h3{font-size:1.18rem;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.1em;padding-left:1.2em}
li{margin-bottom:.45em}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.small{font-size:.9rem}
.muted{color:var(--muted)}
.center{text-align:center}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.86rem;letter-spacing:.02em}

/* ---------- skip link ---------- */
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:99}
.skip:focus{left:8px;top:8px}

/* ---------- top strip ---------- */
.strip{background:var(--ink);color:#dfe8ee;font-size:.82rem}
.strip .wrap{display:flex;flex-wrap:wrap;gap:6px 22px;justify-content:space-between;padding:7px 22px}
.strip a{color:#fff}
.strip span{display:inline-flex;align-items:center;gap:7px}

/* ---------- header ---------- */
.head{position:sticky;top:0;z-index:50;background:rgba(246,244,239,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .3s ease,background .3s ease}
.head.is-stuck{box-shadow:0 6px 26px -18px rgba(11,26,36,.6)}
.head .wrap{display:flex;align-items:center;gap:18px;min-height:74px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand img{width:38px;height:38px}
.brand b{font-family:var(--head);font-weight:800;font-size:1.06rem;letter-spacing:-.02em;display:block;line-height:1.1}
.brand small{display:block;font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav a{
  color:var(--ink);font-size:.93rem;font-weight:600;padding:9px 12px;border-radius:9px;
  position:relative;transition:background .2s ease,color .2s ease
}
.nav a:hover{background:rgba(11,26,36,.06);text-decoration:none}
.nav a[aria-current="page"]{color:var(--copper)}
.nav a[aria-current="page"]::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;background:var(--copper);border-radius:2px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--head);font-weight:700;font-size:.95rem;letter-spacing:-.01em;
  padding:13px 22px;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s cubic-bezier(.2,.8,.3,1),box-shadow .25s ease,background .2s ease,color .2s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:var(--copper);color:#fff;box-shadow:0 10px 24px -12px rgba(180,84,31,.9)}
.btn-primary:hover{background:#9c4718}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:#fff}
.btn-light{background:#fff;color:var(--ink)}
.btn-sm{padding:10px 16px;font-size:.88rem}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;width:44px;height:42px;cursor:pointer}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:4px auto;transition:.25s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

@media(max-width:940px){
  .nav-toggle{display:block}
  .nav{
    position:fixed;inset:74px 0 auto;background:var(--paper-2);flex-direction:column;align-items:stretch;
    gap:2px;padding:14px 22px 22px;border-bottom:1px solid var(--line);margin:0;
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:.25s ease;max-height:calc(100vh - 74px);overflow:auto
  }
  .nav.open{transform:none;opacity:1;pointer-events:auto}
  .nav a{padding:12px 8px;font-size:1rem;border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:12px;border-bottom:0}
}

/* ---------- hero ---------- */
.hero{position:relative;color:#fff;overflow:hidden;isolation:isolate}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:url("../img/hero.jpg") center/cover no-repeat;
  transform:scale(1.04);animation:slowpan 26s ease-in-out infinite alternate
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(105deg,rgba(7,18,26,.94) 8%,rgba(7,18,26,.78) 45%,rgba(7,18,26,.34) 100%)
}
@keyframes slowpan{from{transform:scale(1.04) translate3d(0,0,0)}to{transform:scale(1.12) translate3d(-2%,-1.5%,0)}}
.hero .wrap{padding:96px 22px 84px;max-width:var(--maxw)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.85fr);gap:52px;align-items:center}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:34px}.hero .wrap{padding:66px 22px 56px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--head);font-weight:600;
  font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  padding:7px 14px;border-radius:999px;margin-bottom:20px
}
.hero h1{color:#fff;max-width:14ch}
.hero .lede{font-size:1.1rem;color:#d9e5ec;max-width:56ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;margin-top:36px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18)}
.hero-facts div{min-width:110px}
.hero-facts b{display:block;font-family:var(--head);font-size:1.6rem;font-weight:800}
.hero-facts span{font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:#a9bcc7}

/* quote card */
.quote-card{background:var(--paper-2);color:var(--ink);border-radius:18px;padding:26px;box-shadow:var(--shadow-2)}
.quote-card h2{font-size:1.25rem;margin-bottom:4px}
.field{margin-bottom:13px}
.field label{display:block;font-size:.79rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin-bottom:5px}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:#fff;
  font-family:var(--body);font-size:.95rem;color:var(--ink);transition:border-color .2s,box-shadow .2s
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--frost);box-shadow:0 0 0 3px rgba(29,127,156,.16)
}
.form-note{font-size:.78rem;color:var(--muted);margin:10px 0 0}
.form-ok{display:none;margin-top:12px;padding:11px 13px;border-radius:10px;background:#eaf6ea;border:1px solid #bfe0c0;font-size:.88rem}
.form-ok.show{display:block;animation:pop .35s ease}
@keyframes pop{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- sections ---------- */
section{padding:76px 0}
section.tight{padding:54px 0}
.alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.dark{background:var(--ink);color:#dfe8ee}
.dark h2,.dark h3{color:#fff}
.dark a{color:var(--frost-soft)}
.sec-head{max-width:62ch;margin-bottom:38px}
.sec-head .kicker{font-family:var(--head);font-size:.75rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--copper);margin-bottom:10px}
.dark .sec-head .kicker{color:var(--frost-soft)}

.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}

.card{
  background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  transition:transform .3s cubic-bezier(.2,.8,.3,1),box-shadow .3s ease,border-color .3s ease
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-1);border-color:rgba(180,84,31,.4)}
.card .ico{
  width:42px;height:42px;border-radius:11px;display:grid;place-items:center;margin-bottom:14px;
  background:rgba(29,127,156,.1);color:var(--frost)
}
.card .ico svg{width:22px;height:22px}
.card p:last-child{margin-bottom:0}
.card .price{font-family:var(--head);font-weight:800;color:var(--copper);font-size:1.05rem}
.dark .card{background:rgba(255,255,255,.045);border-color:rgba(255,255,255,.12)}
.dark .card:hover{border-color:rgba(99,194,216,.5)}

.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:44px;align-items:center}
@media(max-width:880px){.split{grid-template-columns:1fr;gap:28px}}
.figure{border-radius:16px;overflow:hidden;box-shadow:var(--shadow-2);position:relative}
.figure img{width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.2,.8,.3,1)}
.figure:hover img{transform:scale(1.045)}
.figure figcaption{font-size:.8rem;color:var(--muted);padding:9px 12px;background:var(--paper-2)}

.checklist{list-style:none;padding:0}
.checklist li{position:relative;padding-left:30px;margin-bottom:.7em}
.checklist li::before{
  content:"";position:absolute;left:0;top:.42em;width:16px;height:16px;border-radius:50%;
  background:var(--copper);
  -webkit-mask:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M20 6L9 17l-5-5' fill='none' stroke='black' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/13px no-repeat, linear-gradient(#000,#000);
  -webkit-mask-composite:destination-out;mask-composite:exclude;
}
.dark .checklist li::before{background:var(--frost-soft)}

/* steps */
.steps{counter-reset:s;display:grid;gap:18px;grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.step{position:relative;padding:24px 20px 20px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2)}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  font-family:var(--head);font-weight:800;font-size:2rem;color:rgba(180,84,31,.28);display:block;line-height:1;margin-bottom:8px
}

/* table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper-2)}
table{width:100%;border-collapse:collapse;font-size:.95rem;min-width:520px}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line)}
th{font-family:var(--head);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);background:rgba(11,26,36,.03)}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:rgba(29,127,156,.05)}

/* reviews */
.quote{background:var(--paper-2);border:1px solid var(--line);border-left:3px solid var(--copper);border-radius:var(--radius);padding:24px}
.quote p{font-size:1rem}
.quote footer{font-size:.86rem;color:var(--muted);font-family:var(--head);font-weight:600}
.stars{color:#c9862a;letter-spacing:.14em;font-size:.95rem;margin-bottom:8px}

/* accordion */
.acc{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper-2)}
.acc details{border-bottom:1px solid var(--line)}
.acc details:last-child{border-bottom:0}
.acc summary{
  cursor:pointer;padding:17px 46px 17px 20px;font-family:var(--head);font-weight:700;font-size:1rem;
  position:relative;list-style:none;transition:background .2s
}
.acc summary::-webkit-details-marker{display:none}
.acc summary:hover{background:rgba(29,127,156,.06)}
.acc summary::after{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  font-size:1.4rem;color:var(--copper);transition:transform .25s
}
.acc details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.acc .acc-body{padding:0 20px 18px;animation:fadein .3s ease}
@keyframes fadein{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* marquee ticker */
.ticker{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2);padding:14px 0}
.ticker-track{display:flex;gap:44px;width:max-content;animation:slide 34s linear infinite}
.ticker:hover .ticker-track{animation-play-state:paused}
.ticker span{font-family:var(--head);font-weight:700;font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
@keyframes slide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* callout band */
.band{background:linear-gradient(120deg,var(--ink) 0%,var(--ink-2) 60%,#1b4356 100%);color:#fff;border-radius:20px;padding:40px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;box-shadow:var(--shadow-2)}
.band h2{color:#fff;margin-bottom:6px}
.band p{color:#c8d8e1;margin:0;max-width:52ch}

/* page hero (interior) */
.phero{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.phero::before{content:"";position:absolute;inset:0;opacity:.22;background:url("../img/shop.jpg") center/cover}
.phero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,26,36,.95),rgba(11,26,36,.55))}
.phero .wrap{position:relative;z-index:2;padding:70px 22px 60px}
.phero h1{color:#fff;max-width:22ch}
.phero p{color:#cddbe4;max-width:62ch;margin-bottom:0}
.crumbs{font-size:.8rem;color:#9fb4c0;margin-bottom:14px}
.crumbs a{color:#cfe0e8}

/* legal typography */
.legal{max-width:74ch}
.legal h2{margin-top:2em;font-size:1.4rem}
.legal h3{margin-top:1.6em}
.legal .updated{font-size:.86rem;color:var(--muted);border-left:3px solid var(--copper);padding-left:12px}
.toc{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;margin:0 0 30px}
.toc ol{margin:0;padding-left:1.2em;font-size:.94rem}

/* footer */
footer.site{background:var(--ink);color:#b9cad4;padding:58px 0 26px;font-size:.94rem}
footer.site h4{font-family:var(--head);color:#fff;font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;margin:0 0 14px}
footer.site a{color:#dbe7ee}
footer.site ul{list-style:none;padding:0;margin:0}
footer.site li{margin-bottom:.5em}
.fgrid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:34px}
@media(max-width:860px){.fgrid{grid-template-columns:1fr 1fr;gap:26px}}
@media(max-width:520px){.fgrid{grid-template-columns:1fr}}
.fbrand{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.fbrand img{width:36px;height:36px}
.fbrand b{color:#fff;font-family:var(--head);font-size:1.02rem}
.legal-bar{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);display:flex;flex-wrap:wrap;gap:12px 26px;justify-content:space-between;font-size:.84rem;color:#8ea3af}

/* cookie banner */
.cookie{
  position:fixed;left:16px;right:16px;bottom:16px;z-index:80;max-width:760px;margin:0 auto;
  background:var(--paper-2);border:1px solid var(--line);border-radius:16px;padding:20px 22px;
  box-shadow:0 24px 60px -20px rgba(11,26,36,.55);
  display:none;gap:18px;align-items:flex-start;flex-wrap:wrap
}
.cookie.show{display:flex;animation:cookieup .45s cubic-bezier(.2,.8,.3,1)}
@keyframes cookieup{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
.cookie p{margin:0;font-size:.9rem;flex:1 1 320px}
.cookie .row{display:flex;gap:10px;flex-wrap:wrap}
.cookie h3{margin:0 0 6px;font-size:1rem}

/* back to top */
.totop{
  position:fixed;right:18px;bottom:86px;z-index:70;width:46px;height:46px;border-radius:50%;
  background:var(--ink);color:#fff;border:0;cursor:pointer;display:grid;place-items:center;
  opacity:0;pointer-events:none;transform:translateY(10px);transition:.3s
}
.totop.show{opacity:1;pointer-events:auto;transform:none}
.totop:hover{background:var(--copper)}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.2,.8,.3,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}
:focus-visible{outline:3px solid var(--frost);outline-offset:2px;border-radius:4px}