/* KOAGU ELEMENT — koagu.com · site.css v1 (15.11.2026)
   Palette: instrukcija v5 §9. Fonts: system stack (no external requests). */
:root{
  --blue:#1A365D; --green:#4A9928; --grey:#717171; --white:#FFFFFF; --bg:#F3F3F3;
  --violet:#8B5CF6; --ink:#1f2937; --line:#e2e8f0; --radius:14px;
  --max:1120px;
  font-family: system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--white);line-height:1.6;font-size:17px}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px;z-index:99}

/* header */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:20px;height:64px}
.logo{font-weight:800;color:var(--blue);text-decoration:none;letter-spacing:.5px;font-size:18px;white-space:nowrap}
.logo span{color:var(--green)}
.nav{display:flex;gap:18px;margin-left:auto;align-items:center}
.nav a{text-decoration:none;color:var(--ink);font-size:15px}
.nav a:hover{color:var(--green)}
.lang{display:flex;gap:6px;font-size:13px}
.lang a,.lang span{padding:3px 7px;border-radius:6px;text-decoration:none;color:var(--grey);border:1px solid var(--line)}
.lang span{background:var(--blue);color:#fff;border-color:var(--blue)}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:15px}
@media (max-width:860px){
  .nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;padding:16px 20px;border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .menu-btn{display:block}
}

/* buttons */
.btn{display:inline-block;padding:13px 22px;border-radius:10px;font-weight:700;text-decoration:none;font-size:16px;border:2px solid transparent}
.btn-main{background:var(--green);color:#fff}
.btn-main:hover{background:#3d8220}
.btn-ghost{border-color:var(--blue);color:var(--blue);background:#fff}
.btn-small{padding:8px 14px;font-size:14px}

/* sections */
section{padding:72px 0}
.alt{background:var(--bg)}
.dark{background:var(--blue);color:#fff}
.dark a{color:#fff}
h1,h2,h3{color:var(--blue);line-height:1.2;margin:0 0 .5em}
.dark h2,.dark h3{color:#fff}
h1{font-size:clamp(30px,4.6vw,48px)}
h2{font-size:clamp(25px,3.2vw,34px)}
h3{font-size:20px}
.lead{font-size:19px;color:#374151;max-width:640px}
.kicker{text-transform:uppercase;letter-spacing:1.5px;font-size:13px;font-weight:700;color:var(--green);margin-bottom:10px}
.muted{color:var(--grey);font-size:14px}
.grid2{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:860px){.grid2,.grid3,.grid4{grid-template-columns:1fr}}

/* hero */
.hero{padding:56px 0 64px;background:linear-gradient(180deg,#fff 0%,var(--bg) 100%)}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 18px}
.hero-img{border-radius:var(--radius);overflow:hidden;aspect-ratio:4/5;box-shadow:0 18px 40px rgba(26,54,93,.18)}
.hero-img img{width:100%;height:100%;object-fit:cover}
.facts{display:flex;gap:22px;flex-wrap:wrap;margin-top:8px}
.facts div{font-size:14px;color:var(--grey)}
.facts b{display:block;font-size:22px;color:var(--blue)}

/* cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card .tag{display:inline-block;font-size:12px;font-weight:700;padding:3px 9px;border-radius:20px;background:#e8f5e1;color:#2f6b15;margin-bottom:10px}
.card .tag.dev{background:#eef2f7;color:var(--grey)}
.card .tag.b2b{background:#e6ecf5;color:var(--blue)}
.card.main{border:2px solid var(--green)}

/* steps */
.steps .step{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.steps .ph{aspect-ratio:4/3;overflow:hidden;background:var(--bg)}
.steps .ph img{width:100%;height:100%;object-fit:cover}
.steps .ph.done{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#e8f5e1,#dbeafe)}
.steps .body{padding:20px}
.steps .n{font-weight:800;color:var(--green);letter-spacing:2px;font-size:14px}

/* lab */
.lab{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:28px 0 14px}
.lab div{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:var(--radius);padding:22px}
.lab b{display:block;font-size:30px;line-height:1.1;margin:6px 0}
.lab small{opacity:.8}
@media (max-width:860px){.lab{grid-template-columns:1fr}}

/* problem */
.ul-check{padding-left:0;list-style:none}
.ul-check li{padding-left:28px;position:relative;margin:10px 0}
.ul-check li:before{content:"";position:absolute;left:0;top:7px;width:14px;height:14px;border-radius:50%;background:var(--green)}
.note{font-size:13px;color:var(--grey);border-left:3px solid var(--line);padding-left:12px;margin-top:18px}
.round{border-radius:var(--radius);overflow:hidden}

/* calculator */
.calc{max-width:560px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 4px 20px rgba(0,0,0,.05)}
.calc label{display:block;font-weight:600;font-size:14px;margin:0 0 6px}
.calc .row{margin-bottom:14px}
.calc select,.calc input{width:100%;padding:12px;border:1px solid #cbd5e1;border-radius:8px;font-size:15px;background:#f8fafc;color:#334155}
.calc select:focus,.calc input:focus{border-color:var(--green);outline:2px solid #c8e6b8}
.calc .out{margin-top:20px;background:#f0fdf4;border:1px solid #bbf7d0;padding:20px;border-radius:10px;text-align:center}
.calc .out-t{font-size:13px;text-transform:uppercase;letter-spacing:.5px}
.calc .out-v{font-size:30px;font-weight:800;color:var(--green);margin:4px 0 8px}
.calc .out-d{font-size:14px;color:#475569;border-top:1px dashed #cbd5e1;padding-top:10px}
.calc .tip{margin-top:8px;font-size:13px;color:var(--blue);border-left:3px solid var(--green);background:#f0fdf4;padding:6px 10px;text-align:left}
.calc .bulk{margin-top:8px;font-size:13px;color:var(--blue);background:var(--bg);border-radius:6px;padding:8px 10px}

/* faq */
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 18px;margin-bottom:10px}
summary{font-weight:700;cursor:pointer;color:var(--blue)}
details p{margin:10px 0 0}

/* footer */
footer{background:#0f2340;color:#cbd5e1;padding:48px 0 30px;font-size:14px}
footer a{color:#fff}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
@media (max-width:860px){footer .cols{grid-template-columns:1fr}}
footer .legal{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;font-size:12px;color:#94a3b8}