/* ============================================================
   Biofireplace UK — professional store styles
   Palette: charcoal + fire amber. Sans: Plus Jakarta Sans
   ============================================================ */
:root {
  --bg: #0f1115;
  --bg-soft: #161a21;
  --card: #1b2029;
  --line: #262d38;
  --text: #eef1f5;
  --muted: #9aa3b2;
  --amber: #ff8a3d;
  --amber-deep: #f05a1b;
  --gold: #ffd27d;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(1200px, 92%); margin: 0 auto; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15,17,21,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.15rem; }
.logo-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--amber), var(--amber-deep));
  display: grid; place-items: center; font-size: 1.2rem;
}
.logo-text span { color: var(--amber); }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--muted); font-weight: 600; font-size: .95rem; transition: color .2s; }
.nav a:hover { color: var(--text); }
.nav a.active { color: var(--amber); }
.btn {
  display: inline-block; padding: 12px 24px; border-radius: 10px;
  font-weight: 700; font-size: .95rem; border: none; cursor: pointer;
  transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(135deg, var(--amber), var(--amber-deep)); color: #fff; box-shadow: 0 8px 20px rgba(240,90,27,.35); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.btn-outline { background: transparent; color: var(--amber); border: 1px solid var(--amber); }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; }
.burger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; }

/* ---------- Hero ---------- */
.hero { padding: 70px 0 40px; background:
  radial-gradient(1000px 500px at 80% -10%, rgba(240,90,27,.18), transparent 60%),
  radial-gradient(700px 400px at 10% 10%, rgba(255,138,61,.08), transparent 60%),
  var(--bg); }
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.badge {
  display: inline-block; padding: 6px 14px; border-radius: 100px;
  background: rgba(255,138,61,.12); color: var(--gold);
  font-size: .8rem; font-weight: 700; letter-spacing: .4px; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(2rem, 4.4vw, 3.4rem); line-height: 1.12; font-weight: 800; letter-spacing: -.5px; }
.hero h1 em { font-style: normal; color: var(--amber); }
.hero-copy > p { color: var(--muted); font-size: 1.08rem; margin: 18px 0 26px; max-width: 520px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-points { list-style: none; margin-top: 26px; display: grid; gap: 8px; }
.hero-points li { color: var(--muted); font-size: .95rem; }
.hero-points li b { color: var(--text); }
.hero-visual { position: relative; }
.hero-photo {
  border-radius: 20px; width: 100%; aspect-ratio: 4/3; object-fit: cover;
  box-shadow: var(--shadow);
}
.hero-badge-card {
  position: absolute; bottom: 20px; left: -18px;
  background: var(--card); border: 1px solid var(--line);
  padding: 14px 20px; border-radius: 14px; box-shadow: var(--shadow);
}
.hbc-num { font-size: 1.5rem; font-weight: 800; color: var(--amber); display: block; }
.hbc-label { color: var(--muted); font-size: .8rem; }

/* ---------- Feature bar ---------- */
.bar { border-block: 1px solid var(--line); background: var(--bg-soft); }
.bar-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 16px 0; }
.bar-inner span { color: var(--muted); font-size: .9rem; font-weight: 600; }

/* ---------- Sections ---------- */
section { padding: 64px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 40px; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; letter-spacing: -.4px; }
.section-head p { color: var(--muted); margin-top: 10px; }
.section-head .kicker {
  color: var(--amber); font-weight: 700; font-size: .82rem;
  text-transform: uppercase; letter-spacing: 2px;
}

/* ---------- Category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.cat-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, border-color .2s;
}
.cat-card:hover { transform: translateY(-4px); border-color: var(--amber); }
.cat-card img { height: 150px; width: 100%; object-fit: cover; }
.cat-card-body { padding: 16px; }
.cat-card-body h3 { font-size: 1rem; font-weight: 700; }
.cat-card-body p { color: var(--muted); font-size: .85rem; margin-top: 4px; }

/* ---------- Product grid ---------- */
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 26px; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  padding: 8px 16px; border-radius: 100px; background: var(--card);
  border: 1px solid var(--line); color: var(--muted); font-size: .85rem;
  font-weight: 600; cursor: pointer; transition: all .15s;
}
.chip:hover { color: var(--text); }
.chip.active { background: var(--amber); border-color: var(--amber); color: #fff; }
.sort-select {
  background: var(--card); color: var(--text); border: 1px solid var(--line);
  border-radius: 10px; padding: 9px 14px; font-size: .88rem; font-family: inherit;
}
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-5px); border-color: var(--amber); box-shadow: var(--shadow); }
.card-media { position: relative; aspect-ratio: 1/1; background: #13161c; overflow: hidden; }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.card:hover .card-media img { transform: scale(1.05); }
.card-tag {
  position: absolute; top: 12px; left: 12px; background: var(--amber-deep); color: #fff;
  font-size: .72rem; font-weight: 700; padding: 5px 10px; border-radius: 100px;
}
.card-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-cat { color: var(--amber); font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.card-title { font-size: .98rem; font-weight: 700; line-height: 1.35; }
.card-meta { color: var(--muted); font-size: .82rem; }
.card-bottom { margin-top: auto; display: flex; align-items: center; justify-content: space-between; padding-top: 6px; }
.price { font-size: 1.2rem; font-weight: 800; }
.price small { color: var(--muted); font-weight: 600; font-size: .78rem; }
.price .was { color: var(--muted); text-decoration: line-through; font-weight: 500; font-size: .85rem; margin-left: 6px; }

/* ---------- Product detail ---------- */
.pd { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.pd-gallery { display: grid; grid-template-columns: 84px 1fr; gap: 12px; }
.pd-thumbs { display: flex; flex-direction: column; gap: 10px; }
.pd-thumb {
  width: 84px; height: 84px; border-radius: 10px; overflow: hidden; cursor: pointer;
  border: 2px solid transparent; opacity: .7; transition: all .15s;
}
.pd-thumb.active, .pd-thumb:hover { border-color: var(--amber); opacity: 1; }
.pd-thumb img { width: 100%; height: 100%; object-fit: cover; }
.pd-main { border-radius: var(--radius); overflow: hidden; aspect-ratio: 1/1; background: #13161c; }
.pd-main img { width: 100%; height: 100%; object-fit: cover; }
.pd-info .badge { margin-bottom: 12px; }
.pd-info h1 { font-size: clamp(1.4rem, 2.6vw, 2rem); font-weight: 800; letter-spacing: -.4px; }
.pd-price-row { display: flex; align-items: baseline; gap: 14px; margin: 18px 0 6px; }
.pd-price { font-size: 2rem; font-weight: 800; color: var(--amber); }
.pd-retail { color: var(--muted); text-decoration: line-through; }
.pd-save { color: #69db7c; font-weight: 700; font-size: .9rem; }
.pd-desc { color: var(--muted); margin: 14px 0 22px; }
.pd-features { list-style: none; display: grid; gap: 10px; margin-bottom: 26px; }
.pd-features li { color: var(--text); font-size: .95rem; }
.pd-features li::before { content: '✔ '; color: var(--amber); font-weight: 800; }
.pd-buy { display: flex; gap: 14px; flex-wrap: wrap; }
.pd-spec { margin-top: 26px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.pd-spec summary { padding: 14px 18px; cursor: pointer; font-weight: 700; list-style: none; }
.pd-spec summary::-webkit-details-marker { display: none; }
.pd-spec .spec-body { padding: 0 18px 18px; display: grid; gap: 8px; color: var(--muted); font-size: .9rem; }
.pd-spec .spec-body b { color: var(--text); }

/* ---------- Info / benefits ---------- */
.benefits { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.benefit {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; text-align: center;
}
.benefit .bi { font-size: 1.8rem; }
.benefit h3 { margin: 12px 0 6px; font-size: 1rem; }
.benefit p { color: var(--muted); font-size: .85rem; }

/* ---------- FAQ ---------- */
.faq { max-width: 780px; margin: 0 auto; display: grid; gap: 12px; }
.faq details {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px;
}
.faq summary { font-weight: 700; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq summary::after { content: '+'; color: var(--amber); font-size: 1.4rem; font-weight: 400; }
.faq details[open] summary::after { content: '–'; }
.faq p { color: var(--muted); margin-top: 12px; font-size: .95rem; }

/* ---------- CTA ---------- */
.cta-final {
  text-align: center;
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(240,90,27,.2), transparent 70%),
    var(--bg-soft);
  border-block: 1px solid var(--line);
}
.cta-final h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; margin-bottom: 12px; }
.cta-final p { color: var(--muted); max-width: 560px; margin: 0 auto 26px; }

/* ---------- Footer ---------- */
.footer { background: var(--bg-soft); border-top: 1px solid var(--line); padding: 50px 0 30px; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 30px; }
.footer-col h4 { margin-bottom: 14px; font-size: .9rem; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.footer-col a { display: block; color: var(--muted); font-size: .9rem; margin-bottom: 8px; transition: color .15s; }
.footer-col a:hover { color: var(--text); }
.footer-col p { color: var(--muted); font-size: .88rem; margin-top: 12px; max-width: 300px; }
.footer-bottom { border-top: 1px solid var(--line); margin-top: 30px; padding-top: 20px; color: var(--muted); font-size: .82rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
  .cat-grid, .benefits { grid-template-columns: repeat(2, 1fr); }
  .pd { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-soft);
    flex-direction: column; padding: 20px 24px; border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .burger { display: flex; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-badge-card { left: 10px; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .cat-grid, .benefits { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .pd-gallery { grid-template-columns: 1fr; }
  .pd-thumbs { flex-direction: row; overflow-x: auto; }
}
@media (max-width: 480px) {
  .grid { grid-template-columns: 1fr; }
}