/* 4Cargo s.r.o. — tmavý web dle originálu (zelený akcent) */
@import url('https://fonts.googleapis.com/css2?family=Barlow:wght@300;400;500;600;700&family=Inter:wght@400;500;600&display=swap');
:root{
  --bg:#0e1210;             /* skoro černá */
  --bg-2:#161b18;
  --section:#f3f5f2;        /* světlá sekce */
  --surface:#ffffff;
  --text:#17201a;
  --muted:#5f6b62;
  --accent:#2f8a37;         /* zelená z loga */
  --accent-2:#46a84d;
  --accent-dark:#256e2c;
  --topbar:#e4e4e2;         /* světle šedý horní pruh */
  --line:#e2e7e1;
  --line-dark:rgba(255,255,255,.12);
  --shadow:0 10px 30px rgba(0,0,0,.10);
  --shadow-lg:0 24px 60px rgba(0,0,0,.20);
  --maxw:1160px;
  --head:'Barlow',system-ui,sans-serif;
  --font:'Inter',system-ui,-apple-system,Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--section);
  line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
h1,h2,h3{font-family:var(--head);line-height:1.15;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.8rem,7.5vw,5.4rem);color:#fff;font-weight:300;letter-spacing:0}
h2{font-size:clamp(1.7rem,3.6vw,2.6rem);color:var(--text);font-weight:600}
h3{font-size:1.25rem;color:var(--text);font-weight:600}
p{margin:0 0 1rem}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:92px 0;background:var(--section)}
.section--tight{padding:60px 0}
.eyebrow{display:inline-block;font-family:var(--head);font-size:.78rem;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.lead{font-size:1.16rem;color:var(--muted);max-width:60ch}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:15px 32px;border-radius:4px;
  font-family:var(--head);font-weight:600;font-size:1rem;cursor:pointer;border:2px solid transparent;transition:.2s}
.btn--primary{background:var(--accent);color:#fff}
.btn--primary:hover{background:var(--accent-dark)}
.btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn--ghost:hover{background:rgba(255,255,255,.14)}
.btn--dark{background:transparent;color:var(--accent);border-color:var(--accent)}
.btn--dark:hover{background:var(--accent);color:#fff}

/* Header — dvě patra */
.site-header{position:sticky;top:0;z-index:50}
.topbar{background:var(--topbar)}
.topbar__in{display:flex;align-items:center;justify-content:space-between;min-height:92px;gap:16px}
.brand{display:flex;align-items:center}
.brand img{height:62px;width:auto}
.brand--text{font-family:var(--head);font-weight:700;font-size:1.6rem;color:#17201a}
.brand--text span{color:var(--accent)}
.topbtn{background:#12160f;color:#fff;font-family:var(--head);font-weight:600;
  padding:14px 34px;border-radius:2px}
.topbtn:hover{background:var(--accent)}
.navbar{background:#111512;border-top:1px solid rgba(255,255,255,.06)}
.navbar .container{display:flex}
.nav-links{display:flex;gap:36px;align-items:center;list-style:none;margin:0;padding:0;height:56px}
.nav-links a{font-family:var(--head);color:#f0f2ee;font-weight:500;font-size:.98rem}
.nav-links a:hover,.nav-links a.active{color:var(--accent-2)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:26px;height:3px;background:#17201a;border-radius:3px;margin:5px 0}

/* Hero — tmavý s fotkou */
.hero{position:relative;background:var(--bg);color:#fff;overflow:hidden}
.hero__bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.5}
.hero__overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,9,7,.82),rgba(6,9,7,.45))}
.hero__inner{position:relative;padding:140px 0 150px;text-align:center}
.hero h1{color:#fff;max-width:16ch;margin-left:auto;margin-right:auto}
.hero .lead{color:#dfe6df;margin-left:auto;margin-right:auto}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;justify-content:center}

/* Split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split img{border-radius:8px;box-shadow:var(--shadow-lg);width:100%;aspect-ratio:4/3;object-fit:cover}
.split--reverse .split__media{order:2}

/* Cards */
.grid{display:grid;gap:26px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:34px 30px;
  box-shadow:var(--shadow);transition:.25s}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.card__icon{width:54px;height:54px;border-radius:10px;display:grid;place-items:center;
  background:var(--accent);color:#fff;margin-bottom:18px;font-size:1.5rem}
.card p{color:var(--muted);margin:0}

/* CTA */
.cta{position:relative;overflow:hidden;text-align:center;color:#fff;padding:96px 40px;background:var(--bg)}
.cta__bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.4}
.cta__over{position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,14,11,.82),rgba(10,14,11,.66))}
.cta>*{position:relative}
.cta h2{color:#fff}
.cta .lead{color:#e2ebe2;margin:0 auto 26px}

/* Checklist */
.checklist{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.checklist li{display:flex;gap:12px;align-items:flex-start;color:var(--text)}
.checklist li::before{content:"";flex:none;width:22px;height:22px;border-radius:50%;margin-top:4px;
  background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/13px no-repeat}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.info-item{display:flex;gap:16px;margin-bottom:26px;align-items:flex-start}
.info-item .ic{flex:none;width:46px;height:46px;border-radius:8px;display:grid;place-items:center;
  background:#e4f0e4;color:var(--accent)}
.info-item strong{display:block;font-family:var(--head)}
.info-item span{color:var(--muted)}
form.contact{background:#fff;border:1px solid var(--line);border-radius:10px;padding:32px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-family:var(--head);font-weight:500;margin-bottom:7px;font-size:.95rem}
.field input,.field textarea{width:100%;padding:13px 15px;border:1px solid var(--line);border-radius:6px;
  font:inherit;background:#f9fbf9}
.field input:focus,.field textarea:focus{outline:2px solid var(--accent);border-color:transparent}
.field textarea{min-height:130px;resize:vertical}

/* Certs */
.cert-grid{display:grid;grid-template-columns:1fr;gap:22px}
.cert{background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;box-shadow:var(--shadow)}
.cert strong{font-family:var(--head);font-size:1.08rem}

/* Footer */
.site-footer{background:var(--bg);color:#aab4ac;padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:40px}
.site-footer h4{font-family:var(--head);color:var(--accent-2);margin:0 0 16px;font-size:1.15rem;font-weight:600}
.site-footer a{color:#aab4ac}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-brand{font-family:var(--head);font-weight:700;font-size:1.5rem;color:#fff;margin-bottom:12px}
.footer-brand span{color:var(--accent-2)}
.footer-bottom{border-top:1px solid var(--line-dark);padding-top:24px;font-size:.9rem;color:#7f8a81;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

@media(max-width:860px){
  .topbar__in{min-height:72px}
  .brand img{height:44px}
  .nav-links{position:fixed;inset:auto 0 auto 0;top:129px;background:#111512;flex-direction:column;
    gap:0;height:auto;padding:6px 24px 20px;transform:translateY(-200%);transition:.3s}
  .nav-links.open{transform:translateY(0)}
  .nav-links li{width:100%;border-bottom:1px solid var(--line-dark)}
  .nav-links a{display:block;padding:15px 0}
  .navbar .container{justify-content:flex-end}
  .nav-toggle{display:block}
  .grid--3,.grid--2,.split,.contact-grid,.footer-grid{grid-template-columns:1fr}
  .split--reverse .split__media{order:0}
  .section{padding:62px 0}
  .cta{padding:64px 24px}
  .hero__inner{padding:96px 0}
}