/* HVAC Repair Richardson — plain CSS, mobile-first, no build step */
:root{
  --navy:#12324f; --navy-d:#0c2338; --navy-l:#1d4a72;
  --amber:#e8892b; --amber-d:#c86f18;
  --ink:#1b2733; --body:#3c4a58; --muted:#63707e;
  --line:#dfe5ea; --bg:#ffffff; --bg-alt:#f4f7f9; --white:#fff;
  --radius:10px; --wrap:1160px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--body);background:var(--bg);
  font-size:17px;line-height:1.65;padding-bottom:64px}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;margin:0 0 .6em;font-weight:700}
h1{font-size:2rem}h2{font-size:1.55rem}h3{font-size:1.15rem}
p{margin:0 0 1.1em}
a{color:var(--navy-l)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,
textarea:focus-visible,summary:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.center{text-align:center}
.skip-link{position:absolute;left:-9999px;background:var(--amber);color:#fff;padding:10px 16px;z-index:100}
.skip-link:focus{left:8px;top:8px}

/* header */
.site-header{position:relative;z-index:20}
.header-top{background:var(--navy-d);color:#c8d6e2;font-size:.82rem}
.header-top__inner{max-width:var(--wrap);margin:0 auto;padding:7px 20px;
  display:flex;flex-wrap:wrap;gap:6px 18px;justify-content:space-between}
.header-contact{display:flex;flex-wrap:wrap;gap:6px 18px}
.header-contact__item{color:#c8d6e2;text-decoration:none}
.header-contact__item:hover{color:#fff}
.site-nav{background:var(--navy);color:#fff}
.site-nav__inner{max-width:var(--wrap);margin:0 auto;padding:12px 20px;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.nav__logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff;margin-right:auto}
.nav__logo-text{font-weight:700;font-size:1.05rem;line-height:1.15;display:flex;flex-direction:column}
.nav__logo-text span{font-weight:400;font-size:.72rem;color:#9fb8cd;letter-spacing:.04em}
.nav__toggle-input{position:absolute;opacity:0;pointer-events:none}
.nav__toggle{display:flex;flex-direction:column;gap:5px;padding:10px;cursor:pointer}
.nav__toggle span{display:block;width:24px;height:2px;background:#fff}
.nav__list{list-style:none;margin:0;padding:0;display:none;width:100%;flex-direction:column;gap:2px}
.nav__toggle-input:checked ~ .nav__list{display:flex}
.nav__list a{color:#e6eef5;text-decoration:none;padding:9px 4px;display:block;font-size:.95rem}
.nav__list a:hover{color:#fff}
.nav__sub{list-style:none;margin:0;padding:0 0 0 14px}
.nav__sub a{font-size:.88rem;color:#b8cbdb}
@media(min-width:900px){
  .nav__toggle{display:none}
  .nav__list{display:flex;flex-direction:row;align-items:center;width:auto;gap:4px}
  .nav__list > li > a{padding:8px 10px}
  .nav__has-sub{position:relative}
  .nav__sub{position:absolute;top:100%;left:0;background:var(--navy-d);min-width:230px;
    padding:6px 0;border-radius:0 0 var(--radius) var(--radius);display:none;
    box-shadow:0 12px 28px rgba(0,0,0,.25)}
  .nav__sub a{padding:9px 16px}
  .nav__has-sub:hover .nav__sub,.nav__has-sub:focus-within .nav__sub{display:block}
}

/* buttons */
.btn{display:inline-block;background:var(--navy-l);color:#fff;text-decoration:none;
  padding:12px 20px;border-radius:var(--radius);font-weight:700;border:2px solid transparent;
  font-size:.95rem;cursor:pointer;text-align:center}
.btn:hover{background:var(--navy-d)}
.btn--call{background:var(--amber)}
.btn--call:hover{background:var(--amber-d)}
.btn--ghost{background:transparent;border-color:currentColor;color:var(--navy)}
.btn--ghost:hover{background:var(--navy);color:#fff}
.btn--lg{padding:15px 28px;font-size:1.02rem}
.btn--sm{padding:8px 14px;font-size:.88rem}

/* hero */
.hero{position:relative;background:var(--navy-d);color:#fff;overflow:hidden}
.hero__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.32}
.hero__inner{position:relative;padding:52px 20px 44px;max-width:820px;margin:0 auto;text-align:center}
.hero__eyebrow{font-size:.8rem;letter-spacing:.13em;text-transform:uppercase;
  color:var(--amber);margin:0 0 10px;font-weight:700}
.hero__h1{color:#fff;font-size:2.1rem;margin:0 0 14px}
.hero__sub{color:#dbe6ef;font-size:1.1rem;margin:0 0 22px}
.hero__actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:0 0 22px}
.hero .btn--ghost{color:#fff}
.trust{list-style:none;margin:0;padding:0;display:flex;gap:8px 22px;flex-wrap:wrap;
  justify-content:center;font-size:.88rem;color:#cfe0ee}
.trust li::before{content:"\2713";color:var(--amber);font-weight:700;margin-right:7px}
@media(min-width:768px){.hero__h1{font-size:2.8rem}.hero__inner{padding:78px 20px 66px}}

.pagehead{background:var(--navy);color:#fff;padding:44px 0 38px;text-align:center}
.pagehead h1{color:#fff;font-size:2rem}
.pagehead .hero__sub{margin-bottom:18px}

/* sections */
.section{padding:46px 0}
.section--alt{padding:46px 0;background:var(--bg-alt);border-top:1px solid var(--line);
  border-bottom:1px solid var(--line)}
.lead{font-size:1.12rem;color:var(--ink)}
.note{font-size:.92rem;color:var(--muted);background:var(--bg-alt);border-left:3px solid var(--line);
  padding:12px 16px;border-radius:0 var(--radius) var(--radius) 0}
.section--alt .note{background:#fff}
.warn{font-size:.97rem;background:#fff5e9;border-left:4px solid var(--amber);
  padding:14px 18px;border-radius:0 var(--radius) var(--radius) 0;color:#5a3f1d}
@media(min-width:768px){.section,.section--alt{padding:66px 0}}

/* grids & cards */
.grid{display:grid;gap:18px}
.grid--2{grid-template-columns:1fr}
.grid--3{grid-template-columns:1fr}
@media(min-width:700px){.grid--2{grid-template-columns:1fr 1fr}}
@media(min-width:900px){.grid--3{grid-template-columns:repeat(3,1fr)}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.section--alt .card{background:#fff}
.card h3{margin-bottom:.45em}
.card p:last-child{margin-bottom:0}
.card ul{margin:0;padding-left:18px}
.card li{margin-bottom:6px}
.card__link{font-weight:700;text-decoration:none}
.card__link:hover{text-decoration:underline}

.callout{background:#fff;border:1px solid var(--line);border-left:4px solid var(--navy-l);
  border-radius:0 var(--radius) var(--radius) 0;padding:18px 22px;margin:0 0 20px}
.callout--urgent{border-left-color:var(--amber);background:#fff8f1}
.callout h3{margin-top:0}
.callout ul{margin:0;padding-left:20px}
.callout li{margin-bottom:8px}

/* linklists */
.linklist{list-style:none;margin:0 0 20px;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.linklist a{display:inline-block;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:8px 14px;text-decoration:none;font-size:.92rem;color:var(--navy)}
.linklist a:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.linklist--tight{gap:6px;margin-bottom:0}
.citygrid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.citygrid{grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.citygrid{grid-template-columns:repeat(3,1fr)}}
.citycard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.citycard h3{font-size:1rem;margin-bottom:.6em}
.citycard .linklist a{font-size:.85rem;padding:6px 11px}

/* tables */
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 16px}
table.costs{width:100%;border-collapse:collapse;background:#fff;font-size:.95rem;min-width:420px}
table.costs caption{text-align:left;font-size:.85rem;color:var(--muted);padding:0 0 8px}
table.costs th,table.costs td{border:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
table.costs thead th{background:var(--navy);color:#fff;font-size:.85rem;
  text-transform:uppercase;letter-spacing:.05em}
table.costs tbody tr:nth-child(even) td{background:var(--bg-alt)}

/* image bands */
.imgband{max-height:300px;overflow:hidden}
.imgband img{width:100%;height:300px;object-fit:cover}

/* cta band */
.ctaband{background:var(--navy);color:#fff;padding:44px 0;text-align:center}
.ctaband h2{color:#fff}
.ctaband p{color:#d5e3ef;max-width:640px;margin:0 auto 20px}
.ctaband__actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.ctaband .btn--ghost{color:#fff}

/* faq */
.faq{border:1px solid var(--line);border-radius:var(--radius);background:#fff;
  margin:0 0 10px;padding:0}
.faq summary{cursor:pointer;padding:14px 18px;list-style:none;display:flex;
  align-items:center;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary h3{margin:0;font-size:1rem}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--amber);font-weight:700;line-height:1}
.faq[open] summary::after{content:"\2212"}
.faq__a{padding:0 18px 14px}
.faq__a p{margin:0}
.qa{border-bottom:1px solid var(--line);padding:0 0 20px;margin:0 0 24px}
.qa:last-child{border-bottom:0}
.qa h2{font-size:1.25rem}

/* forms */
.split{display:grid;gap:30px;grid-template-columns:1fr}
@media(min-width:900px){.split{grid-template-columns:1fr 1fr;gap:44px}}
.leadform{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.section--alt .leadform{background:#fff}
.field{margin:0 0 14px}
.field label{display:block;font-weight:700;font-size:.9rem;color:var(--ink);margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid #c3ccd5;
  border-radius:8px;font:inherit;font-size:.95rem;background:#fff;color:var(--ink)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.nap{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;margin:0 0 18px}
.nap p:last-child{margin-bottom:0}

/* prose (legal) */
.prose h2{font-size:1.2rem;margin-top:1.8em}
.prose h2:first-child{margin-top:0}
.prose ul{padding-left:20px}
.prose li{margin-bottom:8px}

/* footer */
.site-footer{background:var(--navy-d);color:#b9cbda;margin-top:0;font-size:.93rem}
.footer-grid{display:grid;gap:28px;grid-template-columns:1fr;padding-top:44px;padding-bottom:34px}
@media(min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.footer-grid{grid-template-columns:repeat(4,1fr)}}
.footer__h{color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:14px}
.footer__list{list-style:none;margin:0;padding:0}
.footer__list li{margin-bottom:8px}
.footer__list a,.footer__nap a{color:#b9cbda;text-decoration:none}
.footer__list a:hover,.footer__nap a:hover{color:#fff;text-decoration:underline}
.footer__nap{line-height:1.8}
.footer__bar{border-top:1px solid rgba(255,255,255,.12);padding:16px 0 22px;font-size:.82rem;color:#8fa5b8}
.footer__bar p{margin:0 0 6px}
.footer__fine{color:#7c93a8}
.footer__bar a{color:#a8bdcd}

/* sticky mobile call bar */
.callbar{position:fixed;left:0;right:0;bottom:0;display:flex;z-index:50;
  box-shadow:0 -3px 14px rgba(0,0,0,.18)}
.callbar__btn{flex:2;background:var(--amber);color:#fff;text-decoration:none;font-weight:700;
  text-align:center;padding:15px 8px;font-size:.98rem}
.callbar__btn--alt{flex:1;background:var(--navy)}
@media(min-width:900px){.callbar{display:none}body{padding-bottom:0}}