/* CoolCompare UK — shared styles */
:root {
  --ink: #16242e;
  --paper: #f6f8f7;
  --ice: #dcedea;
  --pine: #1d6e63;
  --pine-dark: #14554c;
  --heat: #e4572e;
  --line: #c9d6d2;
  --text: #24333d;
  --muted: #5c6d75;
  --radius: 10px;
  --maxw: 1080px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Instrument Sans", system-ui, sans-serif;
  background: var(--paper);
  color: var(--text);
  line-height: 1.65;
  font-size: 17px;
}
h1, h2, h3, .display {
  font-family: "Bricolage Grotesque", "Instrument Sans", sans-serif;
  color: var(--ink);
  line-height: 1.12;
  letter-spacing: -0.015em;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 700; margin-bottom: 0.6em; }
h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.4em; }
p { margin-bottom: 1em; }
a { color: var(--pine); }
img { max-width: 100%; }

/* Heat strip — brand mark on every page */
.heatstrip {
  height: 5px;
  background: linear-gradient(90deg, var(--pine) 0%, #7fb8a8 45%, #f0a35e 75%, var(--heat) 100%);
}

/* Header */
header.site {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 50;
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0.8rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.logo {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 800; font-size: 1.25rem; color: var(--ink);
  text-decoration: none; letter-spacing: -0.02em;
}
.logo span { color: var(--pine); }
nav.main a {
  color: var(--text); text-decoration: none; font-weight: 500;
  margin-left: 1.4rem; font-size: 0.95rem;
}
nav.main a:hover { color: var(--pine); }
nav.main a.cta {
  background: var(--pine); color: #fff; padding: 0.5rem 1rem;
  border-radius: var(--radius);
}
nav.main a.cta:hover { background: var(--pine-dark); color: #fff; }
.menu-btn { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 0.4rem 0.7rem; font-size: 1.1rem; cursor: pointer; color: var(--ink); }

/* Layout */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }
section { padding: 3.5rem 0; }
.eyebrow {
  display: inline-block; font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--pine);
  margin-bottom: 0.8rem;
}
.eyebrow.hot { color: var(--heat); }

/* Hero */
.hero { background: var(--ice); padding: 4.5rem 0 4rem; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 3rem; align-items: center; }
.hero p.lede { font-size: 1.15rem; color: var(--muted); max-width: 34rem; margin-top: 1.1rem; }

/* Mini sizer card (signature element) */
.sizer-card {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 1.6rem; box-shadow: 0 6px 24px rgba(22, 36, 46, 0.07);
}
.sizer-card label { font-weight: 600; font-size: 0.95rem; display: block; margin-bottom: 0.5rem; }
.sizer-card input[type="range"] { width: 100%; accent-color: var(--pine); }
.sizer-readout {
  display: flex; justify-content: space-between; align-items: baseline;
  margin: 1rem 0 0.4rem;
}
.sizer-readout .big {
  font-family: "Bricolage Grotesque", sans-serif; font-weight: 800;
  font-size: 2.4rem; color: var(--ink);
}
.sizer-readout .big em { font-style: normal; color: var(--heat); }
.sizer-note { font-size: 0.85rem; color: var(--muted); margin-bottom: 1rem; }

/* Buttons */
.btn {
  display: inline-block; background: var(--pine); color: #fff;
  padding: 0.75rem 1.4rem; border-radius: var(--radius);
  text-decoration: none; font-weight: 600; border: none;
  font-size: 1rem; cursor: pointer; font-family: inherit;
}
.btn:hover { background: var(--pine-dark); }
.btn.ghost { background: transparent; color: var(--pine); border: 1.5px solid var(--pine); }
.btn.ghost:hover { background: var(--ice); }
.btn.hot { background: var(--heat); }
.btn.hot:hover { background: #c74722; }
.btn.block { display: block; width: 100%; text-align: center; }

/* Cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.4rem; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem; text-decoration: none; color: var(--text);
  display: block; transition: border-color 0.15s, transform 0.15s;
}
a.card:hover { border-color: var(--pine); transform: translateY(-2px); }
.card .tag { font-size: 0.78rem; font-weight: 600; color: var(--pine); text-transform: uppercase; letter-spacing: 0.06em; }
.card h3 { margin-top: 0.4rem; }
.card p { color: var(--muted); font-size: 0.95rem; margin-bottom: 0; }

/* Tables */
table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: 0.95rem; }
th, td { padding: 0.75rem 0.9rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--ice); font-family: "Bricolage Grotesque", sans-serif; font-weight: 700; color: var(--ink); font-size: 0.9rem; }
tr:last-child td { border-bottom: none; }
td .price { font-weight: 700; color: var(--ink); }

/* Article layout */
.article { max-width: 760px; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
.article h1 { margin-bottom: 0.5rem; }
.article .meta { color: var(--muted); font-size: 0.9rem; margin-bottom: 2rem; }
.article h2 { margin-top: 2.2rem; }
.article ul, .article ol { margin: 0 0 1.2em 1.4em; }
.article li { margin-bottom: 0.4em; }

/* Callouts */
.callout {
  background: var(--ice); border-left: 4px solid var(--pine);
  padding: 1.1rem 1.3rem; border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.5rem 0;
}
.callout.hot { background: #fdeee8; border-left-color: var(--heat); }
.callout p:last-child { margin-bottom: 0; }
.disclosure {
  font-size: 0.85rem; color: var(--muted); background: #fff;
  border: 1px dashed var(--line); border-radius: var(--radius);
  padding: 0.8rem 1rem; margin: 1.2rem 0;
}

/* Forms */
form.lead { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 1.8rem; }
form.lead .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
form.lead label { display: block; font-weight: 600; font-size: 0.92rem; margin: 0.9rem 0 0.3rem; }
form.lead input, form.lead select, form.lead textarea {
  width: 100%; padding: 0.65rem 0.8rem; border: 1px solid var(--line);
  border-radius: 8px; font-family: inherit; font-size: 0.98rem; background: var(--paper);
}
form.lead input:focus, form.lead select:focus, form.lead textarea:focus {
  outline: 2px solid var(--pine); border-color: var(--pine);
}
form.lead .btn { margin-top: 1.4rem; }
.form-note { font-size: 0.83rem; color: var(--muted); margin-top: 0.8rem; }

/* Calculator */
.calc-panel { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 2rem; }
.calc-panel .field { margin-bottom: 1.3rem; }
.calc-panel label { font-weight: 600; display: block; margin-bottom: 0.4rem; }
.calc-panel .hint { font-size: 0.85rem; color: var(--muted); font-weight: 400; }
.calc-panel input[type="number"], .calc-panel select {
  width: 100%; padding: 0.65rem 0.8rem; border: 1px solid var(--line);
  border-radius: 8px; font-size: 1rem; font-family: inherit; background: var(--paper);
}
.seg { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.seg button {
  flex: 1; min-width: 90px; padding: 0.6rem 0.5rem; border: 1.5px solid var(--line);
  background: #fff; border-radius: 8px; cursor: pointer; font-family: inherit;
  font-size: 0.92rem; font-weight: 500; color: var(--text);
}
.seg button.active { border-color: var(--pine); background: var(--ice); color: var(--pine-dark); font-weight: 600; }
.result-panel {
  background: var(--ink); color: #e8f0ee; border-radius: 14px; padding: 2rem;
}
.result-panel h3 { color: #fff; }
.result-panel .kw {
  font-family: "Bricolage Grotesque", sans-serif; font-weight: 800;
  font-size: 3rem; color: #fff; line-height: 1;
}
.result-panel .kw span { color: #f0a35e; }
.result-panel .btu { color: #9fb4ae; margin: 0.3rem 0 1.2rem; }
.result-panel .rec { border-top: 1px solid #33454f; padding-top: 1.2rem; margin-top: 1.2rem; font-size: 0.95rem; }
.result-panel .rec strong { color: #fff; }

/* Footer */
footer.site {
  background: var(--ink); color: #b9c8c4; padding: 3rem 0 2rem; margin-top: 2rem;
  font-size: 0.92rem;
}
footer.site .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 2rem; max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }
footer.site h4 { color: #fff; font-family: "Bricolage Grotesque", sans-serif; margin-bottom: 0.7rem; font-size: 1rem; }
footer.site a { color: #b9c8c4; text-decoration: none; display: block; margin-bottom: 0.4rem; }
footer.site a:hover { color: #fff; }
footer.site .legal { max-width: var(--maxw); margin: 2rem auto 0; padding: 1.2rem 1.25rem 0; border-top: 1px solid #2b3d47; font-size: 0.8rem; color: #7e918c; }

/* FAQ */
details { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; margin-bottom: 0.8rem; }
details summary { font-weight: 600; cursor: pointer; color: var(--ink); }
details p { margin: 0.8rem 0 0; }

/* Responsive */
@media (max-width: 860px) {
  .hero-grid, .grid-3, .grid-2, footer.site .cols, form.lead .row { grid-template-columns: 1fr; }
  nav.main { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 1rem 1.25rem; }
  nav.main.open { display: flex; flex-direction: column; gap: 0.4rem; }
  nav.main a { margin: 0.3rem 0; }
  .menu-btn { display: block; }
  section { padding: 2.5rem 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  a.card:hover { transform: none; }
}