/* =========================================================
   BitKeyShop — Design tokens
   Concept: cold-storage steel plates, laser-engraved serials.
   ========================================================= */
:root{
  --bg:        #10141a;
  --bg-elev:   #171d26;
  --bg-elev-2: #1d2530;
  --line:      #2a323d;
  --line-soft: #212a34;
  --text:      #e8eaed;
  --text-dim:  #9aa4b2;
  --text-faint:#6b7583;
  --brass:     #c9975a;
  --brass-lt:  #e0b988;
  --steel:     #6e9bc7;
  --steel-dim: #3f5a75;
  --ok:        #6fb08f;

  --display: 'Space Mono', 'JetBrains Mono', monospace;
  --body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --maxw: 1180px;
  --radius: 3px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

/* faint brushed-metal texture on the page background */
body{
  background-image:
    repeating-linear-gradient(115deg, rgba(255,255,255,0.012) 0px, rgba(255,255,255,0.012) 1px, transparent 1px, transparent 3px);
}

img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{font-family:var(--display);font-weight:700;letter-spacing:-0.01em;margin:0;}
p{margin:0;}

:focus-visible{outline:2px solid var(--brass);outline-offset:3px;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}

.eyebrow{
  font-family:var(--display);
  font-size:12px;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--brass);
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:18px;height:1px;background:var(--brass);
  display:inline-block;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(16,20,26,0.9);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:74px;
}
.logo{
  font-family:var(--display);
  font-size:18px;
  font-weight:700;
  letter-spacing:0.02em;
  display:flex;align-items:center;gap:10px;
}
.logo .mark{
  width:26px;height:26px;
  border:1px solid var(--brass);
  border-radius:2px;
  display:flex;align-items:center;justify-content:center;
  color:var(--brass);
  font-size:12px;
  position:relative;
}
.logo .mark::after{
  content:"";position:absolute;inset:3px;border:1px solid rgba(201,151,90,0.35);
}
.logo span.sub{color:var(--text-faint);font-weight:400;font-size:11px;letter-spacing:0.1em;}

nav.main-nav ul{display:flex;gap:34px;}
nav.main-nav a{
  font-size:14px;
  color:var(--text-dim);
  letter-spacing:0.02em;
  padding:6px 0;
  border-bottom:1px solid transparent;
  transition:color .15s, border-color .15s;
}
nav.main-nav a:hover, nav.main-nav a.active{
  color:var(--text);
  border-bottom-color:var(--brass);
}

.nav-toggle{
  display:none;
  background:none;border:1px solid var(--line);
  color:var(--text);
  width:40px;height:40px;
  border-radius:2px;
  font-family:var(--display);
}

@media (max-width:820px){
  nav.main-nav{
    position:absolute;top:74px;left:0;right:0;
    background:var(--bg-elev);
    border-bottom:1px solid var(--line);
    display:none;
  }
  nav.main-nav.open{display:block;}
  nav.main-nav ul{flex-direction:column;gap:0;padding:8px 28px 20px;}
  nav.main-nav a{display:block;padding:12px 0;border-bottom:1px solid var(--line-soft);}
  .nav-toggle{display:block;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--display);
  font-size:13px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  padding:14px 24px;
  border-radius:2px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .15s, background .15s, border-color .15s, color .15s;
}
.btn:hover{transform:translateY(-1px);}
.btn-brass{background:var(--brass);color:#181205;}
.btn-brass:hover{background:var(--brass-lt);}
.btn-outline{border-color:var(--line);color:var(--text);}
.btn-outline:hover{border-color:var(--brass);color:var(--brass-lt);}
.btn-sm{padding:10px 16px;font-size:11px;}

/* ---------- hero ---------- */
.hero{
  padding:96px 0 80px;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.hero .wrap{
  display:grid;
  grid-template-columns:1.05fr 0.95fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(34px,4.6vw,54px);
  line-height:1.06;
  margin-top:18px;
}
.hero h1 em{
  font-style:normal;
  color:var(--brass);
}
.hero p.lede{
  color:var(--text-dim);
  font-size:17px;
  max-width:46ch;
  margin-top:22px;
}
.hero .actions{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap;}
.hero .plate-wrap{position:relative;}

.plate{
  background:linear-gradient(155deg,#232b36,#161b22 60%);
  border:1px solid var(--line);
  border-radius:6px;
  padding:26px;
  position:relative;
  box-shadow:0 30px 60px -20px rgba(0,0,0,0.6);
}
.plate::before{
  content:"";position:absolute;inset:0;border-radius:6px;
  background:repeating-linear-gradient(100deg, rgba(255,255,255,0.02) 0 2px, transparent 2px 6px);
  pointer-events:none;
}
.plate .screw{
  position:absolute;width:8px;height:8px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%, #4a5563, #10141a 75%);
  border:1px solid #333d49;
}
.plate .screw.tl{top:12px;left:12px;}
.plate .screw.tr{top:12px;right:12px;}
.plate .screw.bl{bottom:12px;left:12px;}
.plate .screw.br{bottom:12px;right:12px;}

/* ---------- clarity strip ---------- */
.clarity{
  padding:56px 0;
  border-bottom:1px solid var(--line);
  background:var(--bg-elev);
}
.clarity .grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
}
.clarity .item{
  padding:0 24px;
  border-left:1px solid var(--line);
  display:flex;flex-direction:column;gap:8px;
}
.clarity .item:first-child{border-left:none;padding-left:0;}
.clarity .item .tag{
  font-family:var(--display);font-size:11px;letter-spacing:0.1em;text-transform:uppercase;
}
.clarity .item.yes .tag{color:var(--ok);}
.clarity .item.no .tag{color:var(--text-faint);}
.clarity .item p{color:var(--text-dim);font-size:14px;}
@media (max-width:900px){
  .clarity .grid{grid-template-columns:1fr 1fr;gap:24px;}
  .clarity .item{border-left:none;padding-left:0;border-top:1px solid var(--line);padding-top:20px;}
  .clarity .item:first-child{border-top:none;padding-top:0;}
}

/* ---------- section shell ---------- */
section.block{padding:88px 0;border-bottom:1px solid var(--line);}
section.block .head{max-width:640px;margin-bottom:48px;}
section.block h2{font-size:clamp(26px,3vw,36px);margin-top:14px;}
section.block .head p{color:var(--text-dim);margin-top:14px;font-size:16px;}

/* ---------- product grid / cards ---------- */
.grid-products{
  display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
}
@media (max-width:900px){.grid-products{grid-template-columns:1fr 1fr;}}
@media (max-width:600px){.grid-products{grid-template-columns:1fr;}}

.card-plate{
  background:var(--bg-elev);
  border:1px solid var(--line);
  border-radius:4px;
  padding:22px;
  position:relative;
  display:flex;flex-direction:column;gap:14px;
  transition:border-color .15s, transform .15s;
}
.card-plate:hover{border-color:var(--steel-dim);transform:translateY(-3px);}
.card-plate .serial{
  font-family:var(--display);font-size:11px;color:var(--text-faint);letter-spacing:0.08em;
  display:flex;justify-content:space-between;
}
.card-plate .art{
  height:150px;border-radius:3px;
  background:linear-gradient(150deg,#20272f,#141920 70%);
  border:1px solid var(--line-soft);
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.card-plate .art svg{width:60%;height:60%;}
.card-plate h3{font-size:17px;margin-top:2px;}
.card-plate .desc{color:var(--text-dim);font-size:13.5px;line-height:1.55;flex:1;}
.card-plate .meta{
  display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line-soft);
  padding-top:14px;margin-top:4px;
}
.card-plate .price{font-family:var(--display);color:var(--brass-lt);font-size:15px;}
.badge{
  font-family:var(--display);font-size:10px;letter-spacing:0.08em;text-transform:uppercase;
  color:var(--steel);border:1px solid var(--steel-dim);border-radius:2px;padding:3px 7px;
}

/* merch cards variant */
.card-plate.merch .art{background:linear-gradient(150deg,#2a2320,#171310 70%);}

/* ---------- features ---------- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
@media (max-width:820px){.features{grid-template-columns:1fr;}}
.feature{padding:26px;background:var(--bg-elev);border:1px solid var(--line);border-radius:4px;}
.feature .num{font-family:var(--display);color:var(--brass);font-size:13px;letter-spacing:0.08em;}
.feature h3{margin-top:14px;font-size:18px;}
.feature p{margin-top:10px;color:var(--text-dim);font-size:14.5px;}

/* ---------- CTA strip ---------- */
.cta-strip{
  padding:70px 0;text-align:center;background:var(--bg-elev);border-bottom:1px solid var(--line);
}
.cta-strip h2{font-size:clamp(24px,3vw,32px);}
.cta-strip p{color:var(--text-dim);margin-top:12px;}
.cta-strip .actions{margin-top:28px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
footer.site-footer{padding:64px 0 34px;}
footer .grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid var(--line);
}
@media (max-width:820px){footer .grid{grid-template-columns:1fr 1fr;}}
footer h4{
  font-family:var(--display);font-size:12px;letter-spacing:0.1em;text-transform:uppercase;
  color:var(--text-faint);margin-bottom:16px;
}
footer li{margin-bottom:10px;}
footer a{color:var(--text-dim);font-size:14px;}
footer a:hover{color:var(--brass-lt);}
footer .brand p{color:var(--text-dim);font-size:14px;margin-top:14px;max-width:32ch;}
footer .contact p{color:var(--text-dim);font-size:14px;margin-bottom:8px;}
.foot-bottom{
  display:flex;justify-content:space-between;align-items:center;padding-top:26px;flex-wrap:wrap;gap:12px;
}
.foot-bottom p{color:var(--text-faint);font-size:12.5px;}
.foot-bottom .socials{display:flex;gap:14px;}
.foot-bottom .socials span{
  width:30px;height:30px;border:1px solid var(--line);border-radius:2px;
  display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--text-faint);
}
.disclaimer-line{
  font-size:12px;color:var(--text-faint);max-width:900px;line-height:1.7;margin-top:22px;
}

/* ---------- generic content pages (about/privacy/contact/policies) ---------- */
.page-header{padding:64px 0 40px;border-bottom:1px solid var(--line);}
.page-header h1{font-size:clamp(30px,4vw,44px);margin-top:14px;}
.page-header p{color:var(--text-dim);margin-top:14px;max-width:60ch;}

.content{padding:64px 0;}
.content .wrap{max-width:820px;}
.content h2{font-size:22px;margin-top:44px;margin-bottom:14px;}
.content h2:first-child{margin-top:0;}
.content p{color:var(--text-dim);margin-bottom:14px;font-size:15.5px;}
.content ul{margin:0 0 14px 0;}
.content li{color:var(--text-dim);font-size:15.5px;padding-left:20px;position:relative;margin-bottom:8px;}
.content li::before{content:"—";position:absolute;left:0;color:var(--brass);}
.content .updated{font-family:var(--display);font-size:12px;color:var(--text-faint);margin-bottom:8px;}

.callout{
  background:var(--bg-elev);border:1px solid var(--line);border-left:3px solid var(--brass);
  border-radius:3px;padding:20px 22px;margin:26px 0;
}
.callout p{color:var(--text-dim);margin:0;font-size:14.5px;}

/* ---------- contact page ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr;}}
.contact-card{background:var(--bg-elev);border:1px solid var(--line);border-radius:4px;padding:30px;}
.contact-card .row{padding:16px 0;border-top:1px solid var(--line-soft);}
.contact-card .row:first-child{border-top:none;padding-top:0;}
.contact-card .label{font-family:var(--display);font-size:11px;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-faint);}
.contact-card .value{margin-top:6px;font-size:15px;}
.contact-card .value a:hover{color:var(--brass-lt);}

form.contact-form{display:flex;flex-direction:column;gap:16px;}
form.contact-form label{font-family:var(--display);font-size:11px;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-faint);}
form.contact-form input, form.contact-form textarea, form.contact-form select{
  width:100%;background:var(--bg-elev);border:1px solid var(--line);border-radius:2px;
  color:var(--text);padding:12px 14px;font-family:var(--body);font-size:14.5px;margin-top:6px;
}
form.contact-form input:focus, form.contact-form textarea:focus, form.contact-form select:focus{
  outline:none;border-color:var(--brass);
}
form.contact-form textarea{resize:vertical;min-height:120px;}

/* ---------- shop page ---------- */
.shop-toolbar{
  display:flex;justify-content:space-between;align-items:center;
  padding:26px 0;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:14px;
}
.shop-toolbar .count{color:var(--text-dim);font-size:14px;}
.filters{display:flex;gap:10px;flex-wrap:wrap;}
.filters button{
  font-family:var(--display);font-size:11.5px;letter-spacing:0.05em;text-transform:uppercase;
  background:none;border:1px solid var(--line);color:var(--text-dim);
  padding:9px 14px;border-radius:2px;cursor:pointer;transition:all .15s;
}
.filters button:hover, .filters button.active{border-color:var(--brass);color:var(--brass-lt);}
.shop-grid-wrap{padding:44px 0 80px;}
.section-label{
  font-family:var(--display);font-size:13px;letter-spacing:0.1em;text-transform:uppercase;
  color:var(--text-faint);margin:52px 0 22px;
  display:flex;align-items:center;gap:14px;
}
.section-label::after{content:"";flex:1;height:1px;background:var(--line);}
.section-label:first-child{margin-top:0;}

/* =========================================================
   Single-product additions
   ========================================================= */

/* hero: one device, stated plainly */
.hero-single{padding:104px 0 88px;}
.hero-single .wrap{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
@media (max-width:900px){
  .hero-single .wrap{grid-template-columns:1fr;gap:44px;}
  .hero-single{padding:64px 0 56px;}
}
.device-render{
  aspect-ratio:1/1;
  background:radial-gradient(circle at 50% 40%, #232b36 0%, #10141a 72%);
  border:1px solid var(--line);
  border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.device-render::after{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(0deg, rgba(255,255,255,0.014) 0 1px, transparent 1px 4px);
}
.device-render .caption{
  position:absolute;bottom:18px;left:20px;
  font-family:var(--display);font-size:10.5px;letter-spacing:0.14em;
  color:var(--text-faint);text-transform:uppercase;
}

/* spec table */
.specs{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border-top:1px solid var(--line);}
@media (max-width:700px){.specs{grid-template-columns:1fr;}}
.spec{
  padding:20px 24px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);
}
.specs .spec:nth-child(2n){border-right:none;}
@media (max-width:700px){.spec{border-right:none;}}
.spec .k{font-family:var(--display);font-size:11px;letter-spacing:0.1em;text-transform:uppercase;color:var(--text-faint);}
.spec .v{margin-top:7px;font-size:15px;color:var(--text);}

/* three-step */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:4px;overflow:hidden;}
@media (max-width:820px){.steps{grid-template-columns:1fr;}}
.step{padding:30px;border-right:1px solid var(--line);background:var(--bg-elev);}
.steps .step:last-child{border-right:none;}
@media (max-width:820px){.step{border-right:none;border-bottom:1px solid var(--line);} .steps .step:last-child{border-bottom:none;}}
.step .n{font-family:var(--display);font-size:12px;letter-spacing:0.1em;color:var(--brass);}
.step h3{font-size:17px;margin-top:12px;}
.step p{margin-top:10px;color:var(--text-dim);font-size:14.5px;}

/* buy box */
.buybox{
  background:var(--bg-elev);border:1px solid var(--line);border-radius:4px;padding:28px;
}
.buybox .price-row{display:flex;align-items:baseline;gap:12px;}
.buybox .big{font-family:var(--display);font-size:30px;color:var(--brass-lt);}
.buybox .note{color:var(--text-faint);font-size:13px;}
.buybox ul{margin:20px 0;}
.buybox li{color:var(--text-dim);font-size:14px;padding-left:22px;position:relative;margin-bottom:9px;}
.buybox li::before{content:"✓";position:absolute;left:0;color:var(--ok);font-size:12px;}

/* merch pair */
.merch-pair{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
@media (max-width:700px){.merch-pair{grid-template-columns:1fr;}}

/* faq */
.faq{border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);padding:20px 0;}
.faq summary{
  cursor:pointer;font-family:var(--display);font-size:15px;color:var(--text);
  list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";color:var(--brass);font-size:18px;}
.faq details[open] summary::after{content:"–";}
.faq details p{margin-top:14px;color:var(--text-dim);font-size:15px;max-width:70ch;}