/* =========================================================================
   AmpVan — design system
   Tokens: ink (graphite), paper (warm off-white), amber (solar accent),
   volt (battery-green, positive/comparator accent)
   Type: Big Shoulders Display (headlines/numbers) + Work Sans (body)
   ========================================================================= */

:root{
  --ink:        #11161C;
  --ink-soft:   #1C232D;
  --ink-line:   #2B3543;
  --paper:      #F6F3EA;
  --paper-dim:  #EDE8DA;
  --paper-line: #DDD5C2;
  --text:       #1B1B18;
  --text-mute:  #635E52;
  --amber:      #F0A202;
  --amber-deep: #C77F00;
  --volt:       #2E8B79;
  --volt-deep:  #1F6355;
  --red:        #B5432E;
  --white:      #FFFFFF;
  --radius-s: 4px;
  --radius-m: 8px;
  --shadow-card: 0 1px 2px rgba(17,22,28,.06), 0 10px 28px rgba(17,22,28,.07);
  --maxw: 1240px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:'Work Sans', system-ui, sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; cursor:pointer; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:'Big Shoulders Display', system-ui, sans-serif; font-weight:700; letter-spacing:.01em; line-height:1.02; margin:0; color:var(--ink); }
p{ margin:0; }
:focus-visible{ outline:3px solid var(--amber); outline-offset:2px; }
@media (prefers-reduced-motion: reduce){ *{ animation-duration:.001ms !important; transition-duration:.001ms !important; } }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 24px; }
@media (max-width:720px){ .wrap{ padding:0 18px; } }

/* ---------- header ---------- */
.site-header{ background:var(--ink); color:var(--paper); position:sticky; top:0; z-index:40; border-bottom:1px solid var(--ink-line); }
.site-header .wrap{ display:flex; align-items:center; justify-content:space-between; height:68px; gap:20px; }
.brand{ display:flex; align-items:center; gap:9px; font-family:'Big Shoulders Display'; font-size:26px; color:var(--paper); }
.brand .bolt{ color:var(--amber); }
.main-nav{ display:flex; gap:26px; }
.main-nav a{ font-size:14.5px; color:#C8CDD4; padding:6px 0; border-bottom:2px solid transparent; transition:color .15s, border-color .15s; }
.main-nav a:hover, .main-nav a.active{ color:var(--paper); border-color:var(--amber); }
.nav-cta{ background:var(--amber); color:var(--ink); font-weight:700; font-size:13.5px; padding:9px 18px; border-radius:100px; white-space:nowrap; }
.nav-cta:hover{ background:var(--amber-deep); }
.nav-toggle{ display:none; background:none; border:1px solid var(--ink-line); color:var(--paper); border-radius:var(--radius-s); padding:8px 10px; font-size:14px; }
@media (max-width:900px){
  .main-nav{ display:none; position:absolute; top:68px; left:0; right:0; background:var(--ink); flex-direction:column; gap:0; padding:8px 24px 18px; border-bottom:1px solid var(--ink-line); }
  .main-nav.open{ display:flex; }
  .main-nav a{ padding:12px 0; border-bottom:1px solid var(--ink-line); }
  .nav-toggle{ display:inline-block; }
}

/* ---------- footer ---------- */
.site-footer{ background:var(--ink); color:#9DA4AE; padding:48px 0 28px; margin-top:70px; }
.site-footer .cols{ display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:36px; }
@media (max-width:800px){ .site-footer .cols{ grid-template-columns:1fr 1fr; } }
.site-footer h4{ color:var(--paper); font-family:'Work Sans'; font-weight:600; font-size:13px; text-transform:uppercase; letter-spacing:.06em; margin-bottom:12px; }
.site-footer li{ margin-bottom:8px; font-size:13.5px; }
.site-footer a:hover{ color:var(--amber); }
.footer-legal{ border-top:1px solid var(--ink-line); margin-top:36px; padding-top:20px; font-size:12px; color:#7A828C; line-height:1.7; }

/* ---------- hero ---------- */
.hero{ background:var(--ink); color:var(--paper); padding:64px 0 84px; position:relative; overflow:hidden; }
.hero::after{ content:""; position:absolute; right:-120px; top:-80px; width:420px; height:420px; border-radius:50%; background:radial-gradient(circle at 30% 30%, rgba(240,162,2,.16), transparent 70%); }
.hero .grid{ display:grid; grid-template-columns:1.15fr .85fr; gap:52px; align-items:end; position:relative; }
@media (max-width:900px){ .hero .grid{ grid-template-columns:1fr; } }
.hero-eyebrow{ color:var(--amber); font-size:13.5px; font-weight:600; letter-spacing:.03em; margin-bottom:14px; }
.hero h1{ font-size:clamp(38px,5.4vw,64px); color:var(--paper); max-width:14ch; }
.hero h1 em{ font-style:normal; color:var(--amber); }
.hero .lede{ margin-top:18px; font-size:17.5px; color:#C8CDD4; max-width:46ch; }
.hero .cta-row{ margin-top:30px; display:flex; gap:14px; flex-wrap:wrap; }
.btn{ display:inline-flex; align-items:center; gap:8px; padding:13px 24px; border-radius:100px; font-weight:700; font-size:14.5px; border:1px solid transparent; transition:transform .12s, background .15s; }
.btn:active{ transform:scale(.98); }
.btn-amber{ background:var(--amber); color:var(--ink); }
.btn-amber:hover{ background:var(--amber-deep); }
.btn-outline{ border-color:#454E5A; color:var(--paper); }
.btn-outline:hover{ border-color:var(--amber); color:var(--amber); }
.btn-volt{ background:var(--volt); color:#fff; }
.btn-volt:hover{ background:var(--volt-deep); }
.btn-block{ width:100%; justify-content:center; }

.hero-panel{ background:var(--ink-soft); border:1px solid var(--ink-line); border-radius:var(--radius-m); padding:24px; }
.hero-panel .stat{ display:flex; justify-content:space-between; align-items:baseline; padding:13px 0; border-bottom:1px solid var(--ink-line); }
.hero-panel .stat:last-child{ border-bottom:none; }
.hero-panel .stat b{ font-family:'Big Shoulders Display'; font-size:30px; color:var(--amber); }
.hero-panel .stat span{ font-size:12.5px; color:#9DA4AE; text-transform:uppercase; letter-spacing:.04em; }

/* ---------- sections ---------- */
.section{ padding:64px 0; }
.section-head{ display:flex; justify-content:space-between; align-items:flex-end; gap:20px; margin-bottom:30px; flex-wrap:wrap; }
.section-head h2{ font-size:clamp(28px,3.4vw,38px); }
.section-head p{ color:var(--text-mute); max-width:52ch; margin-top:8px; }
.section-link{ font-weight:700; font-size:14px; color:var(--volt-deep); white-space:nowrap; border-bottom:2px solid var(--volt); padding-bottom:2px; }
.section-alt{ background:var(--paper-dim); }

/* ---------- product cards ---------- */
.product-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
@media (max-width:900px){ .product-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:620px){ .product-grid{ grid-template-columns:1fr; } }
.product-card{ background:var(--white); border:1px solid var(--paper-line); border-radius:var(--radius-m); overflow:hidden; box-shadow:var(--shadow-card); display:flex; flex-direction:column; }
.product-card .thumb{ aspect-ratio:4/3; background:linear-gradient(160deg,var(--ink) 0%, var(--ink-soft) 100%); display:flex; align-items:center; justify-content:center; position:relative; }
.product-card .thumb svg{ width:56%; height:56%; }
.product-card .badge{ position:absolute; top:12px; left:12px; background:var(--amber); color:var(--ink); font-size:11px; font-weight:700; padding:4px 10px; border-radius:100px; }
.product-card .body{ padding:18px 18px 20px; display:flex; flex-direction:column; gap:10px; flex:1; }
.product-card .cat{ font-size:11.5px; text-transform:uppercase; letter-spacing:.05em; color:var(--volt-deep); font-weight:700; }
.product-card h3{ font-size:22px; }
.product-card .desc{ font-size:13.5px; color:var(--text-mute); flex:1; }
.product-card .meta-row{ display:flex; justify-content:space-between; align-items:center; padding-top:6px; border-top:1px solid var(--paper-line); }
.product-card .price{ font-family:'Big Shoulders Display'; font-size:26px; color:var(--ink); }
.product-card .price small{ font-family:'Work Sans'; font-size:11px; color:var(--text-mute); font-weight:400; }
.rating{ display:flex; align-items:center; gap:5px; font-size:13px; color:var(--text-mute); }
.rating .stars{ color:var(--amber); letter-spacing:1px; }
.product-card .actions{ display:flex; gap:8px; }
.product-card .actions .btn{ flex:1; padding:10px 14px; font-size:13.5px; }
.compare-check{ display:flex; align-items:center; gap:7px; font-size:12.5px; color:var(--text-mute); padding:2px 0; }

/* ---------- category chips ---------- */
.cat-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
@media (max-width:700px){ .cat-grid{ grid-template-columns:1fr; } }
.cat-card{ background:var(--white); border:1px solid var(--paper-line); border-radius:var(--radius-m); padding:26px; display:flex; gap:18px; align-items:flex-start; box-shadow:var(--shadow-card); }
.cat-card .icon{ width:48px; height:48px; flex:none; border-radius:50%; background:var(--paper-dim); display:flex; align-items:center; justify-content:center; color:var(--amber-deep); }
.cat-card h3{ font-size:22px; margin-bottom:6px; }
.cat-card p{ font-size:13.5px; color:var(--text-mute); }
.cat-card .n{ margin-top:10px; font-size:12px; color:var(--volt-deep); font-weight:700; }

/* ---------- breadcrumb ---------- */
.breadcrumb{ font-size:12.5px; color:var(--text-mute); padding:18px 0 0; }
.breadcrumb a:hover{ color:var(--volt-deep); }
.breadcrumb .sep{ margin:0 6px; }

/* ---------- product detail ---------- */
.pdp-head{ display:grid; grid-template-columns:1fr 1fr; gap:48px; padding:26px 0 44px; align-items:start; }
@media (max-width:900px){ .pdp-head{ grid-template-columns:1fr; gap:28px; } }
.gallery-main{ aspect-ratio:4/3; background:linear-gradient(155deg,var(--ink),var(--ink-soft)); border-radius:var(--radius-m); display:flex; align-items:center; justify-content:center; padding:30px; }
.gallery-main svg{ width:70%; height:70%; }
.gallery-thumbs{ display:flex; gap:10px; margin-top:12px; }
.gallery-thumbs .t{ width:64px; height:64px; border-radius:var(--radius-s); background:var(--paper-dim); border:2px solid transparent; display:flex; align-items:center; justify-content:center; }
.gallery-thumbs .t.active{ border-color:var(--amber); }
.gallery-thumbs .t svg{ width:60%; height:60%; opacity:.7; }
.pdp-info .subcat{ font-size:12px; text-transform:uppercase; letter-spacing:.05em; color:var(--volt-deep); font-weight:700; }
.pdp-info h1{ font-size:clamp(30px,4vw,42px); margin-top:6px; }
.pdp-info .brand-line{ color:var(--text-mute); font-size:14px; margin-top:4px; }
.pdp-info .price-block{ display:flex; align-items:baseline; gap:12px; margin-top:20px; }
.pdp-info .price-block .price{ font-family:'Big Shoulders Display'; font-size:44px; color:var(--ink); }
.pdp-info .price-block .note{ font-size:12px; color:var(--text-mute); }
.pdp-info .short{ margin-top:14px; font-size:15.5px; color:var(--text-mute); max-width:44ch; }
.pdp-info .buy-row{ margin-top:24px; display:flex; gap:12px; flex-wrap:wrap; }
.pdp-info .buy-row .btn{ padding:15px 28px; font-size:15px; }
.disclosure-note{ margin-top:14px; font-size:11.5px; color:var(--text-mute); }

.ideal-box{ margin-top:24px; background:var(--paper-dim); border-left:3px solid var(--amber); border-radius:var(--radius-s); padding:14px 16px; font-size:13.5px; }
.ideal-box b{ display:block; margin-bottom:4px; font-size:12px; text-transform:uppercase; letter-spacing:.04em; color:var(--amber-deep); }

.pdp-body{ display:grid; grid-template-columns:1.15fr .85fr; gap:48px; padding-bottom:20px; }
@media (max-width:900px){ .pdp-body{ grid-template-columns:1fr; } }
.spec-table{ width:100%; border-collapse:collapse; font-size:14px; }
.spec-table tr{ border-bottom:1px solid var(--paper-line); }
.spec-table td{ padding:11px 4px; }
.spec-table td:first-child{ color:var(--text-mute); width:46%; }
.spec-table td:last-child{ font-weight:600; text-align:right; }

.proscons{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:26px; }
@media (max-width:560px){ .proscons{ grid-template-columns:1fr; } }
.proscons .box{ border-radius:var(--radius-m); padding:16px 18px; }
.proscons .pros{ background:rgba(46,139,121,.08); border:1px solid rgba(46,139,121,.25); }
.proscons .cons{ background:rgba(181,67,46,.06); border:1px solid rgba(181,67,46,.2); }
.proscons h4{ font-family:'Work Sans'; font-size:13px; text-transform:uppercase; letter-spacing:.03em; margin-bottom:10px; }
.proscons .pros h4{ color:var(--volt-deep); }
.proscons .cons h4{ color:var(--red); }
.proscons li{ font-size:13.5px; margin-bottom:8px; padding-left:16px; position:relative; }
.proscons .pros li::before{ content:"+"; position:absolute; left:0; color:var(--volt); font-weight:700; }
.proscons .cons li::before{ content:"–"; position:absolute; left:0; color:var(--red); font-weight:700; }

.radar-box{ background:var(--white); border:1px solid var(--paper-line); border-radius:var(--radius-m); padding:20px; box-shadow:var(--shadow-card); }
.radar-box h3{ font-size:16px; font-family:'Work Sans'; font-weight:700; margin-bottom:10px; }
.review-summary{ margin-top:20px; background:var(--white); border:1px solid var(--paper-line); border-radius:var(--radius-m); padding:18px; font-size:13.5px; color:var(--text-mute); }
.review-summary h3{ font-size:16px; font-family:'Work Sans'; font-weight:700; color:var(--text); margin-bottom:8px; }

/* ---------- comparator ---------- */
.comparator-picker{ display:flex; gap:14px; flex-wrap:wrap; margin:22px 0 36px; }
.pick-card{ border:1.5px solid var(--paper-line); border-radius:var(--radius-m); padding:12px 16px; background:var(--white); display:flex; align-items:center; gap:10px; cursor:pointer; font-size:13.5px; transition:border-color .15s, background .15s; }
.pick-card.checked{ border-color:var(--volt); background:rgba(46,139,121,.06); }
.pick-card input{ accent-color:var(--volt); width:16px; height:16px; }
.compare-table-wrap{ overflow-x:auto; border:1px solid var(--paper-line); border-radius:var(--radius-m); background:var(--white); }
table.compare-table{ width:100%; border-collapse:collapse; min-width:560px; }
table.compare-table th, table.compare-table td{ padding:13px 16px; border-bottom:1px solid var(--paper-line); text-align:left; font-size:13.5px; }
table.compare-table thead th{ background:var(--ink); color:var(--paper); font-family:'Big Shoulders Display'; font-size:17px; font-weight:600; vertical-align:top; }
table.compare-table thead th .p-price{ color:var(--amber); font-size:20px; display:block; margin-top:4px; }
table.compare-table tbody td:first-child{ color:var(--text-mute); font-weight:600; white-space:nowrap; }
.compare-empty{ text-align:center; padding:60px 20px; color:var(--text-mute); }
.compare-radar-box{ margin-top:26px; background:var(--white); border:1px solid var(--paper-line); border-radius:var(--radius-m); padding:24px; }

/* ---------- guide ---------- */
.guide-hero{ background:var(--ink); color:var(--paper); padding:56px 0; }
.guide-hero h1{ color:var(--paper); font-size:clamp(32px,4.6vw,52px); max-width:16ch; }
.guide-hero p{ color:#C8CDD4; margin-top:14px; max-width:60ch; font-size:16px; }
.guide-item{ display:grid; grid-template-columns:64px 1fr; gap:18px; padding:26px 0; border-bottom:1px solid var(--paper-line); }
.guide-item .num{ font-family:'Big Shoulders Display'; font-size:40px; color:var(--paper-line); }
.guide-item h3{ font-size:22px; margin-bottom:8px; }
.guide-item p{ color:var(--text-mute); font-size:14.5px; max-width:60ch; }
.guide-item .mini-link{ display:inline-block; margin-top:10px; font-size:13px; font-weight:700; color:var(--volt-deep); border-bottom:1.5px solid var(--volt); }

/* ---------- legal ---------- */
.legal-content{ max-width:70ch; }
.legal-content h2{ font-size:22px; margin-top:34px; margin-bottom:10px; }
.legal-content p{ margin-bottom:14px; color:var(--text-mute); font-size:14.5px; }

/* ---------- offers ---------- */
.offer-banner{ background:var(--amber); color:var(--ink); border-radius:var(--radius-m); padding:20px 24px; display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap; margin-bottom:30px; }
.offer-banner b{ font-family:'Big Shoulders Display'; font-size:22px; }

/* ---------- misc ---------- */
.pill{ display:inline-block; font-size:11.5px; font-weight:700; padding:4px 10px; border-radius:100px; background:var(--paper-dim); color:var(--text-mute); }
.empty-note{ background:var(--white); border:1px dashed var(--paper-line); border-radius:var(--radius-m); padding:26px; text-align:center; color:var(--text-mute); font-size:14px; }

/* ---------- category banner ---------- */
.cat-banner{ background:var(--ink); color:var(--paper); padding:40px 0; margin-top:8px; }
.cat-banner-inner{ display:flex; align-items:center; gap:24px; }
.cat-banner-icon{ width:64px; height:64px; flex:none; border-radius:50%; background:var(--ink-soft); border:1px solid var(--ink-line); display:flex; align-items:center; justify-content:center; padding:14px; }
.cat-banner h1{ color:var(--paper); font-size:clamp(26px,3.6vw,36px); }
.cat-banner p{ color:#C8CDD4; font-size:14.5px; margin-top:6px; max-width:56ch; }
.cat-banner-stat{ margin-left:auto; text-align:right; flex:none; }
.cat-banner-stat b{ display:block; font-family:'Big Shoulders Display'; font-size:34px; color:var(--amber); }
.cat-banner-stat span{ font-size:11.5px; color:#9DA4AE; text-transform:uppercase; letter-spacing:.04em; }
@media (max-width:700px){ .cat-banner-inner{ flex-wrap:wrap; } .cat-banner-stat{ margin-left:0; text-align:left; } }

.subcat-block{ margin-bottom:44px; }
.subcat-block:last-child{ margin-bottom:0; }
.subcat-head{ display:flex; align-items:center; gap:12px; margin-bottom:18px; padding-bottom:10px; border-bottom:2px solid var(--paper-line); }
.subcat-head .subcat-icon{ width:34px; height:34px; flex:none; }
.subcat-head h3{ font-size:22px; }
.subcat-head .subcat-count{ margin-left:auto; font-size:12px; color:var(--text-mute); text-transform:uppercase; letter-spacing:.03em; }

/* ---------- related products ---------- */
.related-section{ margin-top:54px; padding-top:34px; border-top:1px solid var(--paper-line); }
.related-section h3{ font-size:20px; margin-bottom:16px; }

/* ---------- product stat highlight (replaces fake photo gallery) ---------- */
.stat-highlight{ display:flex; gap:10px; margin-top:14px; }
.stat-highlight .chip{ flex:1; background:var(--paper-dim); border:1px solid var(--paper-line); border-radius:var(--radius-s); padding:10px 8px; text-align:center; }
.stat-highlight .chip b{ display:block; font-family:'Big Shoulders Display'; font-size:20px; color:var(--ink); }
.stat-highlight .chip span{ font-size:10.5px; color:var(--text-mute); text-transform:uppercase; letter-spacing:.02em; }