/* ==========================================================================
   Infinity Energy s.r.o. — Dark Industrial Theme
   ========================================================================== */

:root{
  --bg:        #0d0f12;
  --bg-alt:    #14171c;
  --panel:     #1a1e24;
  --panel-2:   #20252d;
  --line:      #2b323b;
  --steel:     #8a94a3;
  --steel-dim: #5c6572;
  --text:      #e7ecf2;
  --text-dim:  #a7b0bd;
  --accent:    #4dd0e1;
  --accent-2:  #7c9cff;
  --accent-glow: rgba(77,208,225,.18);
  --radius: 4px;
  --maxw: 1180px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
h1,h2,h3,h4{font-family:'Rajdhani',sans-serif;line-height:1.15;font-weight:700;letter-spacing:.3px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:'Rajdhani',sans-serif;font-weight:600;font-size:1rem;letter-spacing:.6px;
  text-transform:uppercase;padding:13px 26px;border-radius:var(--radius);
  border:1px solid transparent;cursor:pointer;transition:.25s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#08131a;box-shadow:0 6px 22px -8px var(--accent-glow);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px -8px var(--accent-glow)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-block{width:100%}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(13,15,18,.78);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:background .3s;
}
.site-header.scrolled{background:rgba(13,15,18,.95)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{width:44px;height:22px}
.brand-text{font-family:'Rajdhani',sans-serif;font-weight:700;font-size:1.25rem;letter-spacing:1px}
.brand-accent{color:var(--accent);margin-left:2px}

.main-nav{display:flex;gap:30px}
.main-nav a{
  font-family:'Rajdhani',sans-serif;font-weight:600;font-size:1rem;letter-spacing:.5px;
  color:var(--text-dim);position:relative;padding:4px 0;transition:.2s;
}
.main-nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--accent);transition:width .25s var(--ease)}
.main-nav a:hover{color:var(--text)}
.main-nav a:hover::after{width:100%}

.header-actions{display:flex;align-items:center;gap:14px}
.lang-switch{display:flex;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.lang-btn{
  background:transparent;border:none;color:var(--steel);
  font-family:'Rajdhani',sans-serif;font-weight:600;font-size:.85rem;letter-spacing:.5px;
  padding:7px 11px;cursor:pointer;transition:.2s;
}
.lang-btn:not(:last-child){border-right:1px solid var(--line)}
.lang-btn:hover{color:var(--text);background:var(--panel)}
.lang-btn.is-active{background:var(--accent);color:#08131a}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--text);transition:.3s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:110px 0 90px;border-bottom:1px solid var(--line)}
.hero-grid-bg{
  position:absolute;inset:0;z-index:0;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:52px 52px;
  opacity:.35;
  mask-image:radial-gradient(ellipse 70% 60% at 30% 20%,#000 20%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 30% 20%,#000 20%,transparent 75%);
}
.hero::after{
  content:"";position:absolute;top:-20%;right:-10%;width:600px;height:600px;z-index:0;
  background:radial-gradient(circle,var(--accent-glow),transparent 65%);
  filter:blur(30px);pointer-events:none;
}
.hero-inner{position:relative;z-index:1;max-width:820px}
.eyebrow{
  font-family:'Rajdhani',sans-serif;font-weight:600;letter-spacing:2px;text-transform:uppercase;
  font-size:.85rem;color:var(--accent);margin-bottom:18px;
}
.hero-title{font-size:clamp(2.3rem,6vw,4rem);margin-bottom:20px;text-transform:uppercase}
.hero-sub{font-size:1.15rem;color:var(--text-dim);max-width:640px;margin-bottom:34px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:28px}
.stat{display:flex;flex-direction:column;gap:2px}
.stat-num{font-family:'Rajdhani',sans-serif;font-weight:700;font-size:1.9rem;color:var(--text)}
.stat-label{font-size:.9rem;color:var(--steel)}

/* ---------- Sections ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-head{max-width:720px;margin-bottom:52px}
.section-tag{
  display:inline-block;font-family:'Rajdhani',sans-serif;font-weight:600;
  letter-spacing:2px;text-transform:uppercase;font-size:.8rem;color:var(--accent);
  padding:5px 12px;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:16px;
}
.section-title{font-size:clamp(1.8rem,4vw,2.7rem);text-transform:uppercase;margin-bottom:16px}
.section-lead{color:var(--text-dim);font-size:1.08rem}

/* ---------- Flow ---------- */
.flow{display:flex;align-items:stretch;gap:12px;flex-wrap:wrap;justify-content:center}
.flow-step{
  flex:1;min-width:220px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);padding:30px 26px;text-align:center;transition:.3s var(--ease);
}
.flow-step:hover{border-color:var(--accent);transform:translateY(-4px)}
.flow-ico{width:52px;height:52px;margin:0 auto 16px;color:var(--accent)}
.flow-ico svg{width:100%;height:100%}
.flow-step h3{font-size:1.35rem;margin-bottom:8px;text-transform:uppercase}
.flow-step p{color:var(--text-dim);font-size:.96rem}
.flow-arrow{display:flex;align-items:center;color:var(--steel-dim);font-size:1.6rem}

/* ---------- Pillars ---------- */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pillar-card{
  position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);padding:34px 28px;overflow:hidden;transition:.3s var(--ease);
}
.pillar-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
.pillar-card:hover{transform:translateY(-6px);border-color:var(--panel-2);background:var(--panel-2)}
.pillar-card:hover::before{transform:scaleX(1)}
.pillar-num{
  position:absolute;top:20px;right:24px;font-family:'Rajdhani',sans-serif;font-weight:700;
  font-size:2.6rem;color:var(--line);line-height:1;
}
.pillar-ico{width:48px;height:48px;color:var(--accent);margin-bottom:18px}
.pillar-ico svg{width:100%;height:100%}
.pillar-title{font-size:1.4rem;margin-bottom:12px;text-transform:uppercase;max-width:80%}
.pillar-text{color:var(--text-dim);font-size:.98rem;margin-bottom:18px}
.pillar-list{list-style:none;display:flex;flex-direction:column;gap:9px}
.pillar-list li{position:relative;padding-left:22px;color:var(--text-dim);font-size:.93rem}
.pillar-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;background:var(--accent);transform:rotate(45deg)}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.about-text p{color:var(--text-dim);margin-bottom:16px;font-size:1.02rem}
.about-text .btn{margin-top:12px}
.about-features{display:flex;flex-direction:column;gap:16px}
.feat{display:flex;gap:16px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;transition:.25s}
.feat:hover{border-color:var(--accent)}
.feat-ico{flex-shrink:0;width:40px;height:40px;color:var(--accent)}
.feat-ico svg{width:100%;height:100%}
.feat h4{font-size:1.15rem;margin-bottom:4px}
.feat p{color:var(--text-dim);font-size:.94rem}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:20px;margin:28px 0}
.contact-list li{display:flex;gap:16px;align-items:flex-start}
.contact-ico{flex-shrink:0;width:42px;height:42px;padding:10px;color:var(--accent);background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
.contact-ico svg{width:100%;height:100%}
.contact-label{display:block;font-size:.78rem;letter-spacing:1px;text-transform:uppercase;color:var(--steel);margin-bottom:3px}
.contact-list a:hover{color:var(--accent)}
.map-wrap{margin-top:26px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;height:230px}
.map-wrap iframe{width:100%;height:100%;border:0;filter:grayscale(.6) invert(.9) hue-rotate(180deg) contrast(.9)}

.contact-form{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px}
.field{margin-bottom:18px}
.field label{display:block;font-family:'Rajdhani',sans-serif;font-weight:600;font-size:.95rem;letter-spacing:.4px;margin-bottom:7px;color:var(--text)}
.field .opt{color:var(--steel);font-weight:500}
.field input,.field select,.field textarea{
  width:100%;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  color:var(--text);font-family:'Inter',sans-serif;font-size:.98rem;padding:12px 14px;transition:.2s;
}
.field textarea{resize:vertical;min-height:120px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.field input.invalid,.field textarea.invalid{border-color:#ff6b6b}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.88rem;color:var(--text-dim);margin-bottom:20px;cursor:pointer}
.consent input{margin-top:4px;accent-color:var(--accent);width:16px;height:16px;flex-shrink:0}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.cf-turnstile{margin:0 0 20px}
.form-status{margin-top:16px;font-size:.95rem;min-height:1.2em}
.form-status.ok{color:var(--accent)}
.form-status.err{color:#ff6b6b}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:56px 0 24px}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand p{color:var(--text-dim);margin-top:12px;font-size:.95rem;max-width:280px}
.footer-col{display:flex;flex-direction:column;gap:10px}
.footer-col h4{font-size:1.05rem;text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px;color:var(--text)}
.footer-col a,.footer-col span{color:var(--text-dim);font-size:.94rem;transition:.2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;justify-content:space-between;padding-top:22px;border-top:1px solid var(--line);color:var(--steel);font-size:.86rem;flex-wrap:wrap;gap:8px}

/* ---------- Reveal animation ---------- */
[data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
[data-reveal].in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:940px){
  .pillars{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:40px}
  .flow-arrow{transform:rotate(90deg)}
}
@media(max-width:760px){
  .main-nav{
    position:fixed;top:68px;left:0;right:0;
    flex-direction:column;gap:0;
    background:var(--bg-alt);border-bottom:1px solid var(--line);
    padding:8px 24px;
    transform:translateY(-140%);transition:transform .35s var(--ease);
    max-height:calc(100vh - 68px);overflow:auto;
  }
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:14px 0;border-bottom:1px solid var(--line);width:100%}
  .main-nav a::after{display:none}
  .nav-toggle{display:flex}
  .footer-inner{grid-template-columns:1fr;gap:28px}
  .hero{padding:80px 0 64px}
  .section{padding:64px 0}
  .hero-stats{gap:26px}
}
@media(max-width:420px){
  .header-actions{gap:8px}
  .brand-text{font-size:1.05rem}
  .contact-form{padding:26px 20px}
}