/* Denver Water Heater Service Center
   Palette logic: cold supply line (teal) meets hot output (copper).
   Type: Archivo for structure, Public Sans for reading. */

:root{
  --ink:#0E1F26;
  --deep:#143540;
  --water:#166E86;
  --water-lt:#E3F0F3;
  --copper:#A9502A;
  --copper-lt:#F6EBE4;
  --paper:#F4F6F5;
  --white:#fff;
  --line:#D8E0DF;
  --muted:#53666C;
  --wrap:1180px;
  --r:10px;
  --shadow:0 1px 0 var(--line);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font:400 17px/1.65 "Public Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
img,svg{max-width:100%;height:auto}
a{color:var(--water);text-underline-offset:2px}
a:hover{color:var(--copper)}
:focus-visible{outline:3px solid var(--copper);outline-offset:2px}
h1,h2,h3,h4{font-family:Archivo,system-ui,sans-serif;font-weight:700;line-height:1.12;letter-spacing:-.015em;margin:0 0 .5em}
h1{font-size:clamp(2.1rem,5.2vw,3.35rem)}
h2{font-size:clamp(1.55rem,3.2vw,2.15rem);margin-top:0}
h3{font-size:1.2rem;font-weight:600}
h4{font-size:1.03rem;font-weight:600;margin-bottom:.3em}
p,ul,ol,table{margin:0 0 1.1em}
li{margin-bottom:.35em}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.skip{position:absolute;left:-999px}
.skip:focus{left:8px;top:8px;background:var(--ink);color:#fff;padding:10px 14px;z-index:99;border-radius:6px}

/* ---------- header ---------- */
.site-head{background:var(--white);border-bottom:1px solid var(--line);position:relative;z-index:20}
.topline{background:var(--deep);color:#D5E4E7;font-size:.83rem}
.topline-in{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:38px}
.topline p{margin:0}
.topline a{color:#fff;font-weight:600;text-decoration:none}
.head-in{display:flex;align-items:center;gap:20px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:0 0 auto}
.brand-mark{width:26px;height:34px}
.bm-tank{fill:none;stroke:var(--deep);stroke-width:2.5}
.bm-line{stroke:var(--copper);stroke-width:2.5;stroke-linecap:round}
.bm-drop{fill:var(--water)}
.brand-text{display:flex;flex-direction:column;line-height:1.05;font-family:Archivo,sans-serif}
.brand-text b{font-size:1.02rem;font-weight:700;letter-spacing:-.02em}
.brand-text i{font-style:normal;font-size:.76rem;color:var(--muted);letter-spacing:.04em}
.nav{margin-left:auto}
.nav ul{display:flex;gap:18px;list-style:none;margin:0;padding:0}
.nav a{color:var(--ink);text-decoration:none;font-size:.95rem;font-weight:600;padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current]{border-bottom-color:var(--copper);color:var(--copper)}
.nav-toggle{display:none}

/* ---------- buttons ---------- */
.btn{display:inline-block;text-decoration:none;font-family:Archivo,sans-serif;font-weight:600;
  padding:11px 18px;border-radius:var(--r);border:2px solid transparent;font-size:.98rem}
.btn-call{background:var(--copper);color:#fff}
.btn-call:hover{background:#8E4021;color:#fff}
.btn-ghost{border-color:var(--deep);color:var(--deep);background:transparent}
.btn-ghost:hover{background:var(--deep);color:#fff}
.btn-lg{padding:14px 24px;font-size:1.06rem}

/* ---------- breadcrumbs ---------- */
.crumbs{background:var(--white);border-bottom:1px solid var(--line);font-size:.84rem}
.crumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:9px 0}
.crumbs li{margin:0;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:6px;color:#9FB0B4}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--copper)}

/* ---------- hero ---------- */
.hero{background:var(--white);padding:52px 0 0;position:relative}
.hero-in{max-width:900px}
.kicker{font-family:Archivo,sans-serif;font-weight:600;color:var(--water);margin:0 0 10px;font-size:.95rem}
.hero h1{margin-bottom:.35em}
.lead{font-size:1.16rem;color:#2C444B;max-width:66ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 4px}
.hero-points{display:flex;flex-wrap:wrap;gap:8px 26px;list-style:none;padding:0;margin:20px 0 34px;font-size:.95rem;color:var(--muted)}
.hero-points li{position:relative;padding-left:20px}
.hero-points li::before{content:"";position:absolute;left:0;top:.55em;width:10px;height:10px;border-radius:50%;
  background:linear-gradient(135deg,var(--water),var(--copper))}
.thermal{height:5px;background:linear-gradient(90deg,#2AA0B8 0%,var(--water) 35%,#8C6A4A 62%,var(--copper) 100%)}

/* ---------- sections ---------- */
.sec{padding:52px 0}
.sec.alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec h2+p.sub{margin-top:-.4em;color:var(--muted);max-width:68ch}
.prose{max-width:74ch}
.prose h2{margin-top:1.6em}
.prose h3{margin-top:1.5em}
.prose ul{padding-left:1.15em}
.prose ul li::marker{color:var(--copper)}
.prose blockquote{margin:1.4em 0;padding:4px 0 4px 18px;border-left:4px solid var(--water);color:#2C444B;font-style:normal}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:46px;align-items:start}
.rail{position:sticky;top:18px;background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.rail h2,.rail h3{font-size:1.05rem;margin-bottom:.5em}
.rail ul{list-style:none;padding:0;margin:0 0 16px;font-size:.94rem}
.rail li{padding:6px 0;border-bottom:1px solid var(--line)}
.rail li:last-child{border-bottom:0}
.rail .btn{width:100%;text-align:center}
.rail-nap{font-size:.9rem;color:var(--muted);margin-top:14px}

/* ---------- cards / grids ---------- */
.grid{display:grid;gap:18px}
.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))}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:20px 20px 18px;display:block;text-decoration:none;color:inherit}
a.card:hover{border-color:var(--copper)}
.card h3{margin-bottom:.3em}
.card p{margin:0;font-size:.95rem;color:var(--muted)}
.card .more{display:inline-block;margin-top:10px;font-size:.9rem;font-weight:600;color:var(--water)}

/* symptom list: information-dense, not decorative */
.symptoms{list-style:none;padding:0;margin:0;border-top:1px solid var(--line)}
.symptoms li{display:grid;grid-template-columns:230px 1fr;gap:20px;padding:14px 0;border-bottom:1px solid var(--line);margin:0}
.symptoms b{font-family:Archivo,sans-serif;font-weight:600}
.symptoms span{color:var(--muted)}

.steps{counter-reset:s;list-style:none;padding:0;margin:0}
.steps li{counter-increment:s;position:relative;padding:0 0 18px 46px;margin:0;border-left:2px solid var(--line);margin-left:15px}
.steps li:last-child{border-left-color:transparent}
.steps li::before{content:counter(s);position:absolute;left:-16px;top:0;width:32px;height:32px;border-radius:50%;
  background:var(--deep);color:#fff;font-family:Archivo,sans-serif;font-size:.9rem;display:grid;place-items:center}
.steps h3{margin-bottom:.15em}
.steps p{margin:0;color:var(--muted);font-size:.96rem}

table{width:100%;border-collapse:collapse;font-size:.95rem;background:var(--white)}
th,td{text-align:left;padding:11px 14px;border:1px solid var(--line);vertical-align:top}
th{background:var(--water-lt);font-family:Archivo,sans-serif;font-weight:600}
caption{caption-side:bottom;padding-top:10px;font-size:.85rem;color:var(--muted);text-align:left}
.scroll-x{overflow-x:auto}

.note{background:var(--copper-lt);border-left:4px solid var(--copper);padding:16px 18px;border-radius:0 var(--r) var(--r) 0;margin:1.4em 0}
.note p:last-child{margin-bottom:0}
.note h3{margin-top:0}

/* ---------- faq ---------- */
.faqs{background:var(--white);border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{cursor:pointer;padding:15px 0;font-family:Archivo,sans-serif;font-weight:600;font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"+";color:var(--copper);font-weight:700}
.faq-list details[open] summary::after{content:"\2212"}
.faq-list .ans{padding:0 0 16px;color:#2C444B;max-width:78ch}
.faq-list .ans p:last-child{margin-bottom:0}

/* ---------- cta ---------- */
.cta{background:var(--deep);color:#EAF2F3}
.cta h2{color:#fff}
.cta p{margin:0;color:#C6D8DC;max-width:60ch}
.cta-in{display:flex;flex-wrap:wrap;gap:24px;justify-content:space-between;align-items:center}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta .btn-ghost{border-color:#7FA5AD;color:#fff}
.cta .btn-ghost:hover{background:#fff;color:var(--deep)}

.related{background:var(--paper)}
.related-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px 22px;list-style:none;padding:0;margin:0}
.related-list a{font-weight:600;text-decoration:none;font-size:.97rem}
.related-list a:hover{text-decoration:underline}

/* ---------- branch band ---------- */
.branches{list-style:none;padding:0;margin:20px 0 0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.branches li{background:var(--white);border:1px solid var(--line);border-top:3px solid var(--copper);border-radius:var(--r);padding:16px}
.branches b{display:block;font-family:Archivo,sans-serif;font-size:1.05rem}
.branches a{font-size:.88rem;word-break:break-word}
.branches p{font-size:.88rem;color:var(--muted);margin:6px 0 8px}

/* ---------- footer ---------- */
.site-foot{background:var(--ink);color:#B9CBD0;font-size:.93rem;padding:46px 0 0;border-top:5px solid transparent;
  border-image:linear-gradient(90deg,#2AA0B8,var(--copper)) 1}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px}
.site-foot a{color:#DCE9EC;text-decoration:none}
.site-foot a:hover{color:#fff;text-decoration:underline}
.foot-brand{font-family:Archivo,sans-serif;font-weight:700;color:#fff;font-size:1.1rem;margin-bottom:.4em}
.foot-h{font-size:.98rem;color:#fff;font-family:Archivo,sans-serif;margin-bottom:.7em}
.foot-list{list-style:none;padding:0;margin:0}
.foot-list li{margin-bottom:.4em}
.foot-branch a{font-size:.88rem}
address{font-style:normal;margin-bottom:1em}
.foot-phone{font-size:1.15rem;font-weight:700;color:#fff!important;font-family:Archivo,sans-serif}
.foot-hours,.foot-lic{font-size:.88rem;color:#8FA8AF}
.foot-base{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:34px;padding-top:16px;padding-bottom:80px;border-top:1px solid #23414B;font-size:.85rem}
.foot-base ul{display:flex;gap:16px;list-style:none;margin:0;padding:0}

/* ---------- sticky mobile call bar ---------- */
.callbar{position:fixed;left:0;right:0;bottom:0;display:none;z-index:40;background:var(--copper);
  box-shadow:0 -2px 12px rgba(0,0,0,.25)}
.callbar a{flex:1;text-align:center;padding:15px 8px;color:#fff;text-decoration:none;font-family:Archivo,sans-serif;font-weight:600}
.callbar-alt{background:var(--deep)}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .two-col{grid-template-columns:1fr}
  .rail{position:static}
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .branches{grid-template-columns:repeat(2,minmax(0,1fr))}
  .related-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .topline p{display:none}
  .topline-in{justify-content:flex-end}
  .head-in>.btn-call{display:none}
  .nav-toggle{display:block;background:var(--white);border:2px solid var(--deep);color:var(--deep);
    font-family:Archivo,sans-serif;font-weight:600;padding:8px 14px;border-radius:var(--r);cursor:pointer}
  .nav ul{display:none;position:absolute;left:0;right:0;top:100%;background:var(--white);
    border-top:1px solid var(--line);flex-direction:column;gap:0;padding:6px 20px 14px;box-shadow:0 12px 20px rgba(14,31,38,.09)}
  .nav.open ul{display:flex}
  .nav a{display:block;padding:11px 0;border-bottom:1px solid var(--line)}
  .callbar{display:flex}
  .hero{padding-top:34px}
  .sec{padding:38px 0}
  .g2,.g3{grid-template-columns:1fr}
  .symptoms li{grid-template-columns:1fr;gap:2px}
  .foot-grid{grid-template-columns:1fr}
}
@media print{.callbar,.nav,.cta,.site-foot{display:none}}