/* ===========================================================
   Gas Engineer Bishopton — Design Tokens
   Palette pulled from client logo (Heat Home Services):
   ink charcoal + antique gold/bronze, warm paper background.
   Signature motif: the rotary thermostat dial (tick marks / degree arc).
   =========================================================== */

:root{
  --ink:        #1b1b1a;
  --ink-soft:   #3a3936;
  --paper:      #f6f3ec;
  --paper-dim:  #eee9dd;
  --gold:       #b8901e;
  --gold-deep:  #7a5e14;
  --gold-pale:  #e9d9ad;
  --ember:      #a4471f;
  --white:      #ffffff;
  --line:       #ded6c1;

  --font-display: "Big Shoulders Display", sans-serif;
  --font-body:    "IBM Plex Sans", sans-serif;

  --radius: 3px;
  --shadow: 0 12px 30px -14px rgba(27,27,26,0.35);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.05;
  margin: 0 0 0.5em;
  color: var(--ink);
}
h1{ font-size: clamp(2.6rem, 5vw, 4.4rem); text-transform: uppercase; }
h2{ font-size: clamp(1.9rem, 3.4vw, 2.8rem); text-transform: uppercase; }
h3{ font-size: 1.3rem; }
p{ margin: 0 0 1em; color: var(--ink-soft); }
.container{ max-width: 1180px; margin: 0 auto; padding: 0 24px; }
:focus-visible{ outline: 3px solid var(--gold); outline-offset: 2px; }

/* ---------- Dial motif (signature element) ---------- */
.dial-divider{ display:flex; align-items:center; justify-content:center; gap:10px; margin: 56px 0 40px; }
.dial-divider .tick{ width:2px; height:14px; background: var(--line); }
.dial-divider .tick:nth-child(4){ height:22px; background: var(--gold); }
.dial-divider svg{ flex-shrink:0; }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family: var(--font-body); font-weight:600; font-size:0.78rem;
  letter-spacing:0.16em; text-transform:uppercase; color: var(--gold-deep);
  margin-bottom: 14px;
}
.eyebrow::before{
  content:""; width:22px; height:2px; background: var(--gold);
}

/* ---------- Top utility bar ---------- */
.topbar{
  background: var(--ink); color: var(--paper);
  font-size: 0.85rem;
}
.topbar .container{ display:flex; justify-content:space-between; align-items:center; padding: 8px 24px; flex-wrap:wrap; gap:6px; }
.topbar a{ color: var(--gold-pale); font-weight:600; }
.topbar a:hover{ color: var(--gold); }

/* ---------- Header / nav ---------- */
header.site-header{
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky; top:0; z-index: 50;
}
.site-header .container{ display:flex; align-items:center; justify-content:space-between; padding: 14px 24px; gap: 20px; }
.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ height:44px; width:auto; }
.brand-text{ font-family: var(--font-display); font-weight:700; font-size:1.15rem; text-transform:uppercase; letter-spacing:0.02em; }
.brand-text span{ color: var(--gold-deep); display:block; font-size:0.62rem; font-family: var(--font-body); font-weight:600; letter-spacing:0.14em; margin-top:1px; }

nav.main-nav{ display:flex; align-items:center; gap: 28px; }
nav.main-nav > ul{ display:flex; gap: 26px; align-items:center; }
nav.main-nav a{ font-weight:600; font-size:0.92rem; text-transform:uppercase; letter-spacing:0.03em; }
nav.main-nav > ul > li > a{ padding: 8px 0; border-bottom: 2px solid transparent; }
nav.main-nav > ul > li > a:hover{ border-color: var(--gold); }

.has-dropdown{ position:relative; }
.dropdown{
  position:absolute; top: 100%; left: -18px; min-width: 280px;
  background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow);
  padding: 8px; opacity:0; visibility:hidden; transform: translateY(6px);
  transition: all .15s ease; border-radius: var(--radius);
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown{ opacity:1; visibility:visible; transform: translateY(0); }
.dropdown li a{ display:block; padding: 10px 14px; font-size:0.86rem; text-transform:none; font-weight:500; border-radius: 2px; }
.dropdown li a:hover{ background: var(--paper-dim); color: var(--gold-deep); }

.call-cta{
  background: var(--gold); color: var(--ink); font-weight:700;
  padding: 11px 20px; border-radius: var(--radius); font-size:0.92rem;
  white-space:nowrap; box-shadow: var(--shadow);
}
.call-cta:hover{ background: var(--gold-deep); color: var(--white); }

.nav-toggle{ display:none; }

/* ---------- Hero ---------- */
.hero{
  background: var(--ink); color: var(--paper); position:relative; overflow:hidden;
  padding: 90px 0 100px;
}
.hero::after{
  content:""; position:absolute; right:-120px; top:-120px; width:420px; height:420px;
  border-radius:50%; border: 1px dashed rgba(184,144,30,0.3); pointer-events:none;
}
.hero::before{
  content:""; position:absolute; right:-40px; top:20px; width:280px; height:280px;
  border-radius:50%; border: 1px solid rgba(184,144,30,0.18); pointer-events:none;
}
.hero .container{ display:grid; grid-template-columns: 1.15fr 0.85fr; gap: 50px; align-items:center; position:relative; z-index:2; }
.hero h1{ color: var(--white); }
.hero h1 em{ font-style:normal; color: var(--gold); }
.hero .lede{ font-size:1.12rem; color:#d8d3c6; max-width: 46ch; }
.hero-actions{ display:flex; gap:14px; margin-top: 26px; flex-wrap:wrap; }
.btn{
  display:inline-flex; align-items:center; gap:8px; font-weight:700; text-transform:uppercase;
  font-size:0.86rem; letter-spacing:0.03em; padding: 15px 26px; border-radius: var(--radius);
  border: 1px solid transparent;
}
.btn-primary{ background: var(--gold); color: var(--ink); }
.btn-primary:hover{ background: var(--white); }
.btn-outline{ border-color: rgba(246,243,236,0.4); color: var(--paper); }
.btn-outline:hover{ border-color: var(--gold); color: var(--gold); }

.hero-badges{ display:flex; gap: 26px; margin-top: 42px; flex-wrap:wrap; }
.hero-badges .badge-item{ font-size:0.82rem; color:#c8c2b3; display:flex; align-items:center; gap:8px; }
.hero-badges .badge-item strong{ color: var(--gold); font-family: var(--font-display); font-size:1.5rem; display:block; }

.hero-dial{ position:relative; width: 100%; max-width: 340px; margin:0 auto; }

/* ---------- Sections ---------- */
section{ padding: 74px 0; }
.section-alt{ background: var(--paper-dim); }
.section-ink{ background: var(--ink); color: var(--paper); }
.section-ink h2{ color: var(--white); }
.section-ink p{ color:#cfc9ba; }
.section-head{ max-width: 640px; margin-bottom: 44px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---------- Cards / grids ---------- */
.grid{ display:grid; gap: 26px; }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }
.grid-2{ grid-template-columns: repeat(2, 1fr); }

.card{
  background: var(--white); border: 1px solid var(--line); padding: 30px 26px;
  border-radius: var(--radius); position:relative;
}
.card .num{
  font-family: var(--font-display); font-size:0.85rem; color: var(--gold-deep);
  letter-spacing:0.12em; margin-bottom:10px; display:block;
}
.card h3{ margin-bottom:10px; }
.card p{ font-size:0.95rem; margin-bottom: 14px; }
.card a.more{ font-weight:700; font-size:0.85rem; text-transform:uppercase; color: var(--gold-deep); border-bottom:2px solid var(--gold); padding-bottom:2px; }
.card a.more:hover{ color: var(--ember); }

.img-card{ overflow:hidden; border-radius: var(--radius); border: 1px solid var(--line); background: var(--white); }
.img-card img{ width:100%; height:auto; }
.img-card .cap{ padding: 16px 18px; }

/* ---------- Coverage areas ---------- */
.area-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.area-chip{
  background: var(--white); border:1px solid var(--line); padding: 14px 18px;
  border-radius: var(--radius); font-weight:600; display:flex; justify-content:space-between; align-items:center;
  color: var(--ink);
}
.area-chip:hover{ border-color: var(--gold); color: var(--gold-deep); }
.area-chip .arrow{ color: var(--gold); }

/* ---------- Testimonial ---------- */
.quote-block{
  border-left: 3px solid var(--gold); padding-left: 24px; font-family: var(--font-display);
  font-size:1.35rem; text-transform: none; font-weight:600; color: var(--ink); max-width: 62ch;
}
.quote-block cite{ display:block; font-family: var(--font-body); font-weight:600; font-size:0.85rem;
  text-transform:uppercase; letter-spacing:0.06em; color: var(--gold-deep); margin-top: 14px; font-style:normal; }

/* ---------- FAQ ---------- */
.faq-item{ border-bottom: 1px solid var(--line); padding: 22px 0; }
.faq-item summary{ cursor:pointer; font-weight:700; font-family: var(--font-display); font-size:1.1rem; text-transform:uppercase; letter-spacing:0.01em; list-style:none; display:flex; justify-content:space-between; align-items:center; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:"+"; color: var(--gold); font-size:1.6rem; margin-left:12px; }
.faq-item[open] summary::after{ content:"–"; }
.faq-item p{ margin-top: 14px; max-width: 68ch; }

/* ---------- CTA band ---------- */
.cta-band{
  background: var(--gold); color: var(--ink);
  padding: 50px 0; text-align:center;
}
.cta-band h2{ margin-bottom: 10px; }
.cta-band .btn-primary{ background: var(--ink); color: var(--paper); }
.cta-band .btn-primary:hover{ background: var(--white); color: var(--ink); }

/* ---------- Footer ---------- */
footer.site-footer{ background: var(--ink); color: #c8c2b3; padding: 60px 0 24px; }
footer .foot-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 40px; }
footer h4{ color: var(--gold); font-size:0.85rem; text-transform:uppercase; letter-spacing:0.1em; margin-bottom:16px; }
footer li{ margin-bottom:9px; font-size:0.92rem; }
footer a:hover{ color: var(--gold); }
.foot-bottom{ border-top: 1px solid rgba(255,255,255,0.12); padding-top:20px; font-size:0.8rem; display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; color:#8f8a7d; }
.foot-bottom a{ color:#8f8a7d; }
.foot-bottom a:hover{ color: var(--gold); }

/* ---------- Breadcrumb ---------- */
.breadcrumb{ font-size:0.8rem; padding: 16px 0; color: var(--ink-soft); }
.breadcrumb a{ color: var(--gold-deep); font-weight:600; }
.breadcrumb span{ margin: 0 6px; color: var(--line); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero{ background: var(--ink); color: var(--paper); padding: 54px 0 60px; }
.page-hero .eyebrow{ color: var(--gold); }
.page-hero h1{ color: var(--white); }
.page-hero p{ color:#cfc9ba; max-width:60ch; }

/* ---------- Two column with image ---------- */
.split{ display:grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items:center; }
.split.reverse .split-img{ order:2; }

/* ---------- 404 ---------- */
.err-wrap{ text-align:center; padding: 130px 0; }
.err-wrap .code{ font-family: var(--font-display); font-size: 7rem; color: var(--gold); line-height:1; }

@media (max-width: 900px){
  .grid-3, .grid-4, .grid-2{ grid-template-columns: 1fr 1fr; }
  .area-grid{ grid-template-columns: repeat(2,1fr); }
  .hero .container{ grid-template-columns: 1fr; }
  .hero-dial{ display:none; }
  footer .foot-grid{ grid-template-columns: 1fr 1fr; }
  .split{ grid-template-columns: 1fr; }
  .split-img{ order:1 !important; }
}
@media (max-width: 640px){
  nav.main-nav{ display:none; }
  .grid-3, .grid-4, .grid-2{ grid-template-columns: 1fr; }
  .area-grid{ grid-template-columns: 1fr; }
  footer .foot-grid{ grid-template-columns: 1fr; }
  .topbar .container{ justify-content:center; text-align:center; }
}