/* ===================================================================
   kartsatisi.az — Design System
   Signature: rotated "card stack" motif + card-number style labels
=================================================================== */

:root{
  --navy-950:#081527;
  --navy-900:#0d2544;
  --navy-800:#123563;
  --blue-600:#1c6dd0;
  --blue-500:#2f8cf0;
  --blue-100:#e7f0fd;
  --ice-50:#f5f8fc;
  --white:#ffffff;
  --gold-500:#e8a33d;
  --gold-100:#fdf1de;
  --slate-600:#5b6b82;
  --slate-400:#8a9bb2;
  --ink-900:#0b1a2e;
  --line:#e3eaf3;
  --rainbow:linear-gradient(135deg,#f6b93b 0%,#e55039 25%,#8b5fbf 50%,#4a69bd 75%,#3ec6e0 100%);
  --radius-card: 18px;
  --radius-sm: 10px;
  --shadow-soft: 0 10px 30px -12px rgba(13,37,68,.18);
  --shadow-hover: 0 18px 40px -14px rgba(13,37,68,.28);
  --container: 1180px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  color:var(--ink-900);
  background:var(--ice-50);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Sora',system-ui,sans-serif;
  color:var(--navy-950);
  margin:0 0 .5em;
  line-height:1.18;
  letter-spacing:-.01em;
}
p{margin:0 0 1em;color:var(--slate-600);}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* card-number style eyebrow label — signature typographic device */
.eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:12.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--blue-600);
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  font-weight:500;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:var(--gold-500);
  display:inline-block;
  border-radius:2px;
}

/* ===================== HEADER ===================== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;max-width:var(--container);margin:0 auto;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;}
.brand img{height:42px;width:auto;}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  font-size:14.5px;font-weight:600;color:var(--navy-900);
  position:relative;padding:6px 0;
}
.main-nav a:hover{color:var(--blue-600);}
.has-dropdown{position:relative;}
.dropdown{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%);
  background:var(--white);border-radius:14px;box-shadow:var(--shadow-hover);
  padding:14px;width:250px;display:none;flex-direction:column;gap:2px;
  border:1px solid var(--line);
  max-height:340px;overflow-y:auto;
}
.has-dropdown:hover .dropdown{display:flex;}
.dropdown a{
  padding:9px 12px;border-radius:8px;font-weight:500;font-size:13.5px;color:var(--navy-900);
}
.dropdown a:hover{background:var(--blue-100);color:var(--blue-600);}
.header-actions{display:flex;align-items:center;gap:12px;}
.phone-link{font-weight:700;font-size:14.5px;color:var(--navy-900);display:flex;align-items:center;gap:6px;white-space:nowrap;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-weight:700;font-size:14px;
  border:none;cursor:pointer;transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space:nowrap;
}
.btn-whatsapp{background:#25D366;color:#fff;box-shadow:0 8px 20px -8px rgba(37,211,102,.55);}
.btn-whatsapp:hover{transform:translateY(-2px);box-shadow:0 12px 26px -8px rgba(37,211,102,.65);}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:0 8px 20px -8px rgba(28,109,208,.5);}
.btn-primary:hover{transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--navy-900);border:1.5px solid var(--line);}
.btn-outline:hover{border-color:var(--blue-600);color:var(--blue-600);}
.btn-gold{background:var(--gold-500);color:#3a2400;}
.mobile-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--navy-900);}

/* ===================== HERO ===================== */
.hero{
  padding:72px 0 90px;overflow:hidden;position:relative;
  background:radial-gradient(circle at 82% 15%,rgba(28,109,208,.10),transparent 55%);
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center;}
.hero h1{font-size:44px;font-weight:800;}
.hero h1 .accent{color:var(--blue-600);}
.hero .lead{font-size:17.5px;max-width:480px;}
.hero-cta{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:28px;margin-top:40px;flex-wrap:wrap;}
.hero-stats div{font-family:'IBM Plex Mono',monospace;}
.hero-stats strong{display:block;font-size:24px;color:var(--navy-950);font-family:'Sora',sans-serif;}
.hero-stats span{font-size:12.5px;color:var(--slate-400);letter-spacing:.04em;}

/* card stack visual */
.card-stack{position:relative;height:360px;}
.stack-card{
  position:absolute;width:230px;height:150px;border-radius:16px;
  box-shadow:0 20px 40px -14px rgba(9,25,49,.35);
  top:50%;left:50%;
  display:flex;flex-direction:column;justify-content:space-between;
  padding:16px 18px;color:#fff;font-family:'IBM Plex Mono',monospace;
}
.stack-card .tag{font-size:11px;letter-spacing:.14em;opacity:.85;}
.stack-card .chip{width:32px;height:24px;border-radius:5px;background:linear-gradient(135deg,#f3d38a,#c99a3f);}
.stack-card .num{font-size:13px;letter-spacing:.12em;}
.card-1{transform:translate(-50%,-50%) rotate(-18deg) translate(-90px,10px);background:linear-gradient(135deg,#123563,#0a1c33);z-index:1;}
.card-2{transform:translate(-50%,-50%) rotate(-6deg) translate(-30px,-10px);background:linear-gradient(135deg,#0d2544,#08172c);z-index:2;}
.card-3{transform:translate(-50%,-50%) rotate(7deg) translate(35px,-20px);background:#ffffff;color:var(--navy-950);z-index:3;border:1px solid var(--line);}
.card-3 .chip{background:linear-gradient(135deg,#f3d38a,#c99a3f);}
.card-4{transform:translate(-50%,-50%) rotate(19deg) translate(95px,15px);background:var(--rainbow);z-index:4;}
.stack-card:hover{transform:inherit;}

/* ===================== SECTIONS ===================== */
section{padding:74px 0;}
.section-head{max-width:640px;margin:0 auto 44px;text-align:center;}
.section-head.left{margin:0 0 40px;text-align:left;}
.section-head h2{font-size:32px;}
.bg-navy{background:var(--navy-950);color:#fff;}
.bg-navy h2,.bg-navy h3{color:#fff;}
.bg-navy p{color:#aab8cc;}
.bg-ice{background:var(--white);}

/* trust strip */
.trust-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.trust-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 22px;box-shadow:var(--shadow-soft);
}
.trust-item .ico{
  width:44px;height:44px;border-radius:12px;background:var(--blue-100);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:20px;
}
.trust-item h3{font-size:16px;margin-bottom:6px;}
.trust-item p{font-size:13.8px;margin:0;}

/* product grid */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}

.product-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .18s ease, box-shadow .18s ease;
  display:flex;flex-direction:column;
}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);}
.product-thumb{
  height:150px;display:flex;align-items:center;justify-content:center;position:relative;
}
.product-thumb .mini-card{ 
    font-size:10px;
  width:120px;height:76px;border-radius:10px;box-shadow:0 12px 24px -10px rgba(9,25,49,.35);
  display:flex;flex-direction:column;justify-content:space-between;padding:10px 12px;
  font-family:'IBM Plex Mono',monospace;color:#fff;
}
.product-body{padding:18px 20px 22px;flex:1;display:flex;flex-direction:column;}
.product-body h3{font-size:16.5px;margin-bottom:6px;}
.product-body p{font-size:13.6px;margin-bottom:14px;flex:1;}
.product-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;}
.price-tag{font-family:'IBM Plex Mono',monospace;font-weight:600;color:var(--navy-900);font-size:14px;}
.price-tag span{color:var(--slate-400);font-size:11.5px;display:block;font-weight:400;}
.chev-link{font-weight:700;font-size:13.5px;color:var(--blue-600);display:flex;align-items:center;gap:4px;}

/* keyword/service cards */
.service-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;transition:transform .18s ease,box-shadow .18s ease, border-color .18s ease;
}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--blue-500);}
.service-card .ico{
  width:46px;height:46px;border-radius:12px;
  background:var(--navy-950);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px;
}
.service-card h3{font-size:17px;margin-bottom:8px;}
.service-card p{font-size:13.8px;margin-bottom:14px;}
.service-card a{font-weight:700;font-size:13.5px;color:var(--blue-600);}

/* about / split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split img,.split .visual{border-radius:var(--radius-card);}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:20px;}
.check-list li{display:flex;gap:12px;list-style:none;align-items:flex-start;font-size:14.5px;color:var(--slate-600);}
.check-list li b{color:var(--ink-900);}
.check-ico{
  width:24px;height:24px;border-radius:7px;background:var(--gold-100);color:var(--gold-500);
  display:flex;align-items:center;justify-content:center;font-size:13px;flex:none;margin-top:1px;font-weight:800;
}

/* breadcrumb */
.breadcrumb{font-size:13px;color:var(--slate-400);padding:20px 0 0;}
.breadcrumb a{color:var(--blue-600);font-weight:600;}

/* product detail */
.pd-hero{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center;padding:40px 0 70px;}
.pd-visual{
  background:linear-gradient(160deg,var(--navy-900),var(--navy-950));
  border-radius:24px;height:380px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;
}
.pd-visual .mini-card{width:260px;height:164px;border:1px solid rgba(255,255,255,.22);box-shadow:0 25px 55px -15px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.15);}
.pd-visual .mini-card .tag{font-size:12.5px;}
.pd-visual .mini-card .num{font-size:15px;}
.pd-visual .mini-card .chip{width:40px;height:30px;}
.pd-visual::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 30% 20%,rgba(255,255,255,.08),transparent 60%);
}
.pd-price{font-family:'IBM Plex Mono',monospace;font-size:26px;font-weight:700;color:var(--navy-950);margin:10px 0 4px;}
.pd-price span{font-size:13px;color:var(--slate-400);font-weight:400;display:block;}
.spec-table{width:100%;border-collapse:collapse;margin-top:10px;}
.spec-table tr{border-bottom:1px solid var(--line);}
.spec-table td{padding:12px 6px;font-size:14px;}
.spec-table td:first-child{color:var(--slate-400);width:42%;font-family:'IBM Plex Mono',monospace;font-size:12.5px;letter-spacing:.03em;}
.spec-table td:last-child{color:var(--ink-900);font-weight:600;}

.feature-row{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line);}
.feature-row:last-child{border-bottom:none;}
.feature-row .n{
  font-family:'IBM Plex Mono',monospace;color:var(--blue-600);font-weight:700;font-size:14px;flex:none;
  width:34px;
}

.faq-item{border-bottom:1px solid var(--line);padding:20px 0;}
.faq-item summary{
  cursor:pointer;font-weight:700;font-size:15.5px;color:var(--navy-950);
  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:"+";font-size:20px;color:var(--blue-600);font-weight:400;}
.faq-item[open] summary::after{content:"–";}
.faq-item p{margin-top:12px;font-size:14.5px;}

/* CTA banner */
.cta-banner{
  background:var(--navy-950);border-radius:28px;padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-banner::before{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;border-radius:50%;
  background:var(--rainbow);opacity:.18;filter:blur(10px);
}
.cta-banner h2{color:#fff;font-size:26px;margin-bottom:8px;}
.cta-banner p{color:#aab8cc;margin:0;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}

/* footer */
.site-footer{background:var(--navy-950);color:#c7d2e3;padding:60px 0 26px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-grid h4{color:#fff;font-size:14.5px;margin-bottom:16px;letter-spacing:.03em;}
.footer-grid a{display:block;font-size:13.6px;color:#a6b3c9;margin-bottom:10px;}
.footer-grid a:hover{color:#fff;}
.footer-brand img{height:38px;margin-bottom:14px;}
.footer-brand p{font-size:13.6px;color:#94a3ba;max-width:280px;}
.footer-contact li{list-style:none;font-size:13.6px;color:#a6b3c9;margin-bottom:10px;display:flex;gap:8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);margin-top:40px;padding-top:22px;
  display:flex;justify-content:space-between;font-size:12.6px;color:#7d8ba3;flex-wrap:wrap;gap:10px;
}

/* whatsapp float */
.wa-float{
  position:fixed;bottom:24px;right:24px;z-index:200;
  width:60px;height:60px;border-radius:50%;background:#25D366;
  display:flex;align-items:center;justify-content:center;box-shadow:0 12px 30px -8px rgba(37,211,102,.6);
  font-size:28px;color:#fff;
}
.wa-float:hover{transform:scale(1.06);}

/* misc */
.tag-pill{
  display:inline-block;padding:5px 12px;border-radius:999px;background:var(--blue-100);color:var(--blue-600);
  font-size:12px;font-weight:700;letter-spacing:.02em;margin-bottom:8px;
}
.two-col-text{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.divider{height:1px;background:var(--line);margin:60px 0;}

/* responsive */
@media(max-width:960px){
  .hero-inner,.pd-hero,.split{grid-template-columns:1fr;}
  .hero-inner{gap:40px;}
  .card-stack{height:280px;margin-top:20px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .trust-strip{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .two-col-text{grid-template-columns:1fr;}
}
@media(max-width:680px){
  .main-nav{display:none;}
  .mobile-toggle{display:block;}
  .phone-link{display:none;}
  .hero h1{font-size:32px;}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
  .trust-strip{grid-template-columns:1fr;}
  .cta-banner{flex-direction:column;text-align:center;}
  .footer-grid{grid-template-columns:1fr;}
  .pd-hero{gap:30px;}
}