/* ============================================================
   MAMUT ACADEMY — shared styles (part 1: tokens + nav + hero)
   Dark theme: black + gold, serif headings + sans body
   ============================================================ */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --black:#060608;
  --black2:#0d0d12;
  --panel:#111118;
  --gold:#C8A45A;
  --gold2:#E2C47A;
  --white:#EDE9E1;
  --muted:rgba(237,233,225,0.45);
  --dim:rgba(237,233,225,0.18);
  --border:rgba(200,164,90,0.15);
  --border2:rgba(200,164,90,0.35);
}
html{scroll-behavior:smooth}
body{background:var(--black);color:var(--white);font-family:'DM Sans',system-ui,sans-serif;font-weight:300;line-height:1.7;overflow-x:hidden}

/* ---------- NAV ---------- */
nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:0 40px;height:72px;display:flex;align-items:center;justify-content:space-between;transition:background .5s,backdrop-filter .5s}
nav.dark{background:rgba(6,6,8,0.92);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.logo{font-family:'Cormorant Garamond',serif;font-size:20px;letter-spacing:.12em;color:var(--white);text-decoration:none;font-weight:300}
.logo span{color:var(--gold)}
.nav-center{display:flex;gap:36px;list-style:none}
.nav-center a{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);text-decoration:none;transition:color .3s}
.nav-center a:hover,.nav-center a.active{color:var(--white)}
.nav-right{display:flex;align-items:center;gap:22px}
.lang-switch{display:flex;border:1px solid var(--border2);border-radius:2px;overflow:hidden}
.lang-switch button{background:transparent;border:0;color:var(--muted);font-size:10px;letter-spacing:.2em;text-transform:uppercase;padding:7px 14px;cursor:pointer;font-family:'DM Sans',sans-serif;font-weight:400;transition:all .3s}
.lang-switch button.active{background:var(--gold);color:var(--black)}
.btn{display:inline-block;font-size:10px;letter-spacing:.22em;text-transform:uppercase;padding:11px 26px;border:1px solid var(--gold);color:var(--gold);text-decoration:none;transition:all .4s;font-family:'DM Sans',sans-serif;font-weight:400;white-space:nowrap;background:transparent}
.btn:hover{background:var(--gold);color:var(--black)}
.btn.solid{background:var(--gold);color:var(--black)}
.btn.solid:hover{background:transparent;color:var(--gold)}
.btn.ghost{border-color:var(--border2);color:var(--muted)}
.btn.ghost:hover{border-color:var(--gold);color:var(--gold);background:transparent}
.btn.big{padding:15px 38px;font-size:11px}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:92vh;display:flex;flex-direction:column;justify-content:flex-end;padding:140px 40px 80px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,var(--black) 0%,rgba(6,6,8,0.6) 50%,rgba(6,6,8,0.85) 100%)}
.hero-inner{position:relative;z-index:2;max-width:1200px;width:100%;margin:0 auto}
.hero-label{font-size:10px;letter-spacing:.4em;text-transform:uppercase;color:var(--gold);margin-bottom:24px;display:inline-block}
.hero-title{font-family:'Cormorant Garamond',serif;font-size:clamp(40px,6vw,84px);font-weight:300;line-height:1.05;color:var(--white);margin-bottom:28px}
.hero-title em{font-style:italic;color:var(--gold)}
.hero-sub{font-size:16px;color:var(--muted);max-width:640px;line-height:1.85;margin-bottom:40px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:48px;margin-top:64px;flex-wrap:wrap}
.hero-stat .num{font-family:'Cormorant Garamond',serif;font-size:36px;color:var(--gold);font-weight:300;line-height:1}
.hero-stat .lbl{font-size:10px;letter-spacing:.25em;text-transform:uppercase;color:var(--muted);margin-top:6px}
/* ---------- SECTION ---------- */
section{padding:120px 40px;position:relative}
.section-inner{max-width:1200px;margin:0 auto}
.section-label{font-size:9px;letter-spacing:.4em;text-transform:uppercase;color:var(--gold);margin-bottom:20px;display:block}
.section-title{font-family:'Cormorant Garamond',serif;font-size:clamp(32px,4vw,52px);font-weight:300;color:var(--white);line-height:1.15;margin-bottom:20px}
.section-title em{font-style:italic;color:var(--gold)}
.section-lead{font-size:15px;color:var(--muted);max-width:720px;line-height:1.85;margin-bottom:56px}
.section.center{text-align:center}
.section.center .section-lead{margin-left:auto;margin-right:auto}

/* ---------- GRID CARDS ---------- */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--panel);border:1px solid var(--border);padding:36px 32px;position:relative;transition:border-color .4s,transform .4s}
.card:hover{border-color:var(--border2);transform:translateY(-4px)}
.card-num{font-family:'Cormorant Garamond',serif;font-size:14px;color:var(--gold);letter-spacing:.2em;margin-bottom:18px;display:block}
.card h3{font-family:'Cormorant Garamond',serif;font-size:22px;font-weight:300;color:var(--white);margin-bottom:14px;line-height:1.3}
.card p{font-size:13px;color:var(--muted);line-height:1.75}
.card a{display:inline-block;margin-top:22px;font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);text-decoration:none;border-bottom:1px solid var(--border2);padding-bottom:3px;transition:all .3s}
.card a:hover{border-color:var(--gold);color:var(--gold2)}

/* ---------- TIMELINE / STEPS ---------- */
.timeline{position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:8px;top:8px;bottom:8px;width:1px;background:linear-gradient(to bottom,var(--gold),transparent)}
.tl-item{position:relative;padding-bottom:44px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:'';position:absolute;left:-36px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--black);border:1px solid var(--gold)}
.tl-num{font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);margin-bottom:8px;display:block}
.tl-title{font-family:'Cormorant Garamond',serif;font-size:24px;font-weight:300;color:var(--white);margin-bottom:10px}
.tl-body{font-size:14px;color:var(--muted);line-height:1.8;max-width:680px}

/* ---------- DOC PAGE ---------- */
.doc-hero{position:relative;padding:180px 40px 80px;min-height:48vh;display:flex;flex-direction:column;justify-content:flex-end;background:radial-gradient(ellipse at top right,rgba(200,164,90,0.08) 0%,transparent 60%)}
.doc-hero .hero-inner{padding-bottom:0}
.doc-crumb{font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);margin-bottom:24px}
.doc-crumb a{color:var(--gold);text-decoration:none}
.doc-body{padding:80px 40px;max-width:900px;margin:0 auto}
.doc-body h2{font-family:'Cormorant Garamond',serif;font-size:32px;font-weight:300;color:var(--white);margin:48px 0 16px;line-height:1.25}
.doc-body h2:first-child{margin-top:0}
.doc-body h2 .step{color:var(--gold);font-size:18px;display:block;letter-spacing:.2em;margin-bottom:8px}
.doc-body p{font-size:15px;color:var(--white);opacity:.85;line-height:1.85;margin-bottom:18px}
.doc-body ul,.doc-body ol{margin:0 0 20px 24px;font-size:14px;color:var(--muted);line-height:1.9}
.doc-body ul li::marker{color:var(--gold)}
.doc-body ol li::marker{color:var(--gold);font-family:'Cormorant Garamond',serif}
.callout{background:var(--panel);border-left:2px solid var(--gold);padding:24px 28px;margin:28px 0;font-size:14px;color:var(--white);opacity:.92;line-height:1.8}
.callout strong{color:var(--gold);font-weight:500;display:block;margin-bottom:8px;font-size:11px;letter-spacing:.25em;text-transform:uppercase}
.doc-footer{border-top:1px solid var(--border);margin-top:80px;padding-top:40px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
.doc-nav{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- FAQ ---------- */
.faq{max-width:900px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border);padding:24px 0}
.faq-q{font-family:'Cormorant Garamond',serif;font-size:20px;color:var(--white);font-weight:300;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:20px}
.faq-q::after{content:'+';font-size:24px;color:var(--gold);transition:transform .3s;font-weight:300}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{font-size:14px;color:var(--muted);line-height:1.85;padding-top:14px;display:none;max-width:800px}
.faq-item.open .faq-a{display:block}

/* ---------- CTA ---------- */
.cta{padding:140px 40px;text-align:center;background:radial-gradient(ellipse at center,rgba(200,164,90,0.06) 0%,transparent 70%);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.cta .section-title{max-width:800px;margin:0 auto 20px}
.cta .section-lead{margin:0 auto 40px}

/* ---------- FOOTER ---------- */
footer{padding:60px 40px;border-top:1px solid var(--border);background:var(--black2)}
.foot-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.foot-brand{max-width:320px}
.foot-brand .logo{font-size:24px;margin-bottom:14px;display:inline-block}
.foot-brand p{font-size:12px;color:var(--muted);line-height:1.7;margin-top:14px}
.foot-cols{display:flex;gap:60px;flex-wrap:wrap}
.foot-col h4{font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--gold);margin-bottom:16px}
.foot-col a{display:block;font-size:12px;color:var(--muted);text-decoration:none;margin-bottom:10px;transition:color .3s}
.foot-col a:hover{color:var(--white)}
.foot-bottom{max-width:1200px;margin:40px auto 0;padding-top:24px;border-top:1px solid var(--border);font-size:11px;color:var(--dim);display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px}

/* ---------- i18n visibility ---------- */
[data-lang]{display:none}
html[lang="es"] [data-lang="es"]{display:block}
html[lang="ru"] [data-lang="ru"]{display:block}
html[lang="es"] span[data-lang="es"],
html[lang="ru"] span[data-lang="ru"]{display:inline}

/* ---------- RESPONSIVE ---------- */
@media (max-width:960px){
  nav{padding:0 20px}
  .nav-center{display:none}
  section{padding:80px 20px}
  .doc-body{padding:60px 20px}
  .hero{padding:120px 20px 60px}
  .doc-hero{padding:140px 20px 50px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .hero-stats{gap:32px}
  .foot-inner{flex-direction:column}
  .foot-cols{gap:32px}
}