/* ============================================================
   ENEKTRI EMS — base design system
   Цветове: извлечени от логото (нейви лист + тийл надпис)
   Шрифт: Sofia Sans (български, поддържа кирилица) + IBM Plex Mono за данни
   ============================================================ */

:root{
  --navy-950:#06121f;
  --navy-900:#0a1e36;
  --navy-850:#0c2440;
  --navy-800:#10304f;
  --navy-700:#15406b;
  --teal:#11a3b8;
  --teal-strong:#0d8ba0;
  --teal-deep:#0b6e80;
  --aqua:#4fc6ce;
  --aqua-soft:#bfe7ea;
  --ice:#eef5f7;
  --paper:#f7fafb;
  --white:#ffffff;
  --ink:#13283b;
  --muted:#567082;
  --line:#dde8ec;
  --line-dark:rgba(255,255,255,.10);
  --amber:#e6a23c;
  --amber-deep:#c77f1d;
  --red:#d96a5b;
  --green:#3aa877;
  --radius:14px;
  --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(10,30,54,.06),0 4px 14px rgba(10,30,54,.06);
  --shadow-md:0 2px 6px rgba(10,30,54,.08),0 14px 36px rgba(10,30,54,.12);
  --font:"Sofia Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --container:1180px;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  font-size:17px;
  line-height:1.6;
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:var(--teal-strong);text-decoration:none;}
a:hover{color:var(--teal-deep);}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;}
strong{font-weight:700;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- typography ---------- */
h1,h2,h3,h4{font-weight:800;line-height:1.12;letter-spacing:-.015em;text-wrap:balance;}
.kicker{
  font-family:var(--mono);
  font-size:13px;
  font-weight:500;
  text-transform:uppercase;
  letter-spacing:.18em;
  color:var(--teal-strong);
  display:flex;align-items:center;gap:10px;
  margin-bottom:14px;
}
.kicker::before{content:"";width:26px;height:2px;background:var(--teal);flex:none;}
.kicker.center{justify-content:center;}
.kicker.center::after{content:"";width:26px;height:2px;background:var(--teal);flex:none;}
.sec-title{font-size:clamp(30px,3.6vw,42px);margin-bottom:16px;}
.sec-lead{font-size:clamp(17px,1.6vw,19.5px);color:var(--muted);max-width:760px;text-wrap:pretty;}
.sec-head{margin-bottom:48px;}
.sec-head.center{text-align:center;}
.sec-head.center .sec-lead{margin:0 auto;}

.on-dark .sec-title{color:#fff;}
.on-dark .sec-lead{color:#a9c0d2;}
.on-dark .kicker{color:var(--aqua);}
.on-dark .kicker::before,.on-dark .kicker.center::after{background:var(--aqua);}

section{padding:96px 0;scroll-margin-top:128px;}
section.tight{padding:72px 0;}

.bg-paper{background:var(--paper);}
.bg-ice{background:linear-gradient(180deg,var(--ice) 0%,var(--paper) 100%);}
.bg-dark{background:radial-gradient(1100px 540px at 78% -10%,rgba(17,163,184,.16),transparent 60%),linear-gradient(180deg,var(--navy-900),var(--navy-950));color:#cfe0ec;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--font);font-size:16px;font-weight:700;letter-spacing:.01em;
  padding:14px 26px;border-radius:100px;border:1.5px solid transparent;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease,border-color .15s ease;
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn-primary{background:var(--teal);color:#fff;box-shadow:0 6px 18px rgba(17,163,184,.32);}
.btn-primary:hover{background:var(--teal-strong);color:#fff;box-shadow:0 8px 24px rgba(17,163,184,.42);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal-deep);}
.btn-ghost-dark{background:rgba(255,255,255,.04);color:#e8f3f6;border-color:rgba(255,255,255,.22);}
.btn-ghost-dark:hover{border-color:var(--aqua);color:#fff;background:rgba(79,198,206,.10);}
.btn-lg{padding:17px 34px;font-size:17.5px;border-radius:100px;}
.btn .arr{transition:transform .15s ease;}
.btn:hover .arr{transform:translateX(3px);}

/* ---------- top bar ---------- */
.topbar{background:var(--navy-950);color:#9fb6c6;font-size:13.5px;}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;}
.topbar a{color:#cfe0ea;font-weight:600;}
.topbar a:hover{color:var(--aqua);}
.topbar .tb-left{display:flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:.04em;}
.topbar .tb-left .dot{width:4px;height:4px;border-radius:50%;background:var(--teal);display:inline-block;}
.topbar .tb-right{display:flex;align-items:center;gap:18px;white-space:nowrap;}
.topbar .tb-right a{white-space:nowrap;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.scrolled{box-shadow:0 6px 24px rgba(10,30,54,.10);}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:84px;}
.brand img{height:52px;width:auto;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  font-size:16px;font-weight:700;letter-spacing:.04em;color:var(--ink);
  padding:9px 13px;border-radius:8px;
}
.main-nav a:hover{background:var(--ice);color:var(--teal-deep);}
.main-nav a.active{color:var(--teal-strong);background:rgba(17,163,184,.10);}
.header-cta{display:flex;align-items:center;gap:14px;}
.header-phone{display:inline-flex;align-items:center;gap:8px;font-family:var(--font);font-size:15px;font-weight:800;color:var(--ink)!important;white-space:nowrap;}
.header-phone svg{width:17px;height:17px;color:var(--teal);flex:none;}
.header-cta .btn{padding:11px 20px;font-size:14.5px;}
.nav-toggle{display:none;background:none;border:none;width:44px;height:44px;position:relative;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:10px;width:24px;height:2.5px;border-radius:2px;background:var(--ink);transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{top:-8px;left:0;}
.nav-toggle span::after{top:8px;left:0;}

/* ---------- sub anchor nav ---------- */
.subnav{
  position:sticky;top:68px;z-index:80;
  background:var(--navy-900);
  overflow-x:auto;scrollbar-width:none;
}
.subnav::-webkit-scrollbar{display:none;}
.subnav .container{display:flex;align-items:center;gap:6px;min-height:48px;}
.subnav a{
  font-family:"Manrope",var(--font);font-size:14px;color:#9fb6c6;
  padding:8px 16px;border-radius:999px;white-space:nowrap;font-weight:700;
}
.subnav a:hover{color:#fff;background:rgba(255,255,255,.07);}
.subnav a.hot{color:#06222a;background:var(--aqua);font-weight:700;}
.subnav a.hot:hover{background:#6ad2d9;}

/* ---------- cards ---------- */
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c4d8de;}

/* ---------- reveal on scroll ---------- */
@media (prefers-reduced-motion: no-preference){
  .rv{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease;}
  .rv.in{opacity:1;transform:none;}
  .rv-d1{transition-delay:.08s;}
  .rv-d2{transition-delay:.16s;}
  .rv-d3{transition-delay:.24s;}
  .rv-d4{transition-delay:.32s;}
}

/* ---------- forms ---------- */
.field{display:flex;flex-direction:column;gap:7px;}
.field label{font-size:13.5px;font-weight:700;letter-spacing:.04em;color:var(--ink);}
.field input,.field select,.field textarea{
  font-family:var(--font);font-size:16px;color:var(--ink);
  padding:13px 15px;border:1.5px solid var(--line);border-radius:11px;background:#fff;
  transition:border-color .15s ease,box-shadow .15s ease;width:100%;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(17,163,184,.16);
}
.field input.err,.field textarea.err{border-color:var(--red);box-shadow:0 0 0 3px rgba(217,106,91,.14);}
.field .hint{font-size:12.5px;color:var(--muted);}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-950);color:#8fa7b8;font-size:15px;}
.site-footer .foot-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding:72px 0 56px;}
.site-footer img{height:40px;width:auto;margin-bottom:18px;}
.site-footer h4{color:#fff;font-size:15px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:18px;font-weight:700;}
.site-footer ul{display:flex;flex-direction:column;gap:10px;}
.site-footer a{color:#aac0cf;}
.site-footer a:hover{color:var(--aqua);}
.foot-desc{max-width:330px;text-wrap:pretty;line-height:1.65;}
.foot-social{display:flex;gap:10px;margin-top:20px;}
.foot-social a{
  width:38px;height:38px;border-radius:9px;border:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:center;color:#cfe0ea;font-family:var(--mono);font-size:11px;font-weight:500;
}
.foot-social a:hover{border-color:var(--aqua);color:var(--aqua);}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;font-size:13.5px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--mono);}

/* ---------- responsive ---------- */
@media (max-width:1020px){
  .topbar .tb-left span:nth-child(3){display:none;}
  .topbar .tb-left .dot{display:none;}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;padding:12px 20px 20px;gap:2px;
    box-shadow:0 18px 40px rgba(10,30,54,.14);
  }
  .main-nav.open{display:flex;}
  .main-nav a{padding:13px 14px;font-size:16px;}
  .nav-toggle{display:block;}
  .header-phone{display:none;}
  .subnav{display:none;}
  .site-footer .foot-main{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:640px){
  section{padding:64px 0;}
  .topbar .tb-right span.tb-soc{display:none;}
  .topbar .tb-left span:first-child{font-size:11px;}
  .site-footer .foot-main{grid-template-columns:1fr;}
  .header-cta .btn{padding:10px 14px;font-size:13.5px;}
}