:root{
  --lx-bg:#0b1220;
  --lx-bg-rgb:11,18,32;
  --lx-card:#111a2c;
  --lx-border:#1e293b;
  --lx-accent:#3b82f6;
  --lx-accent-2:#60a5fa;
  --lx-accent-soft:rgba(59,130,246,0.16);
  --lx-gradient:linear-gradient(135deg,#3b82f6 0%,#2563eb 100%);
  --lx-gold:linear-gradient(135deg,#f59e0b 0%,#d97706 100%);
  --lx-text:#e5e9f0;
  --lx-muted:#94a3b8;
  --lx-text-strong:#f1f5f9;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--lx-bg);
  color:var(--lx-text);
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  overflow-x:hidden;
  line-height:1.5;
}
a{color:inherit;text-decoration:none;}
button{font:inherit;}

/* ===== фон с параллаксом ===== */
.bg-glow{
  position:fixed;
  inset:-10%;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(circle at 20% 20%, rgba(59,130,246,0.16), transparent 60%),
    radial-gradient(circle at 80% 0%, rgba(245,158,11,0.09), transparent 55%),
    radial-gradient(circle at 50% 100%, rgba(59,130,246,0.10), transparent 65%);
  filter:blur(60px);
  will-change:transform;
  transition:transform .3s ease-out;
}

/* ===== "дышащий" mesh-градиент ===== */
.bg-mesh{
  position:fixed;
  inset:-20%;
  z-index:0;
  pointer-events:none;
  opacity:0.7;
  background:
    radial-gradient(circle at 30% 40%, rgba(59,130,246,0.14), transparent 30%),
    radial-gradient(circle at 70% 60%, rgba(245,158,11,0.08), transparent 32%),
    radial-gradient(circle at 50% 20%, rgba(96,165,250,0.10), transparent 28%);
  background-size:180% 180%;
  animation:meshBreathe 14s ease-in-out infinite;
  filter:blur(10px);
}
@keyframes meshBreathe{
  0%{background-position:0% 0%; transform:scale(1);}
  50%{background-position:100% 100%; transform:scale(1.08);}
  100%{background-position:0% 0%; transform:scale(1);}
}

/* ===== частицы ===== */
#particles{
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:0.5;
}

/* ===== курсор-свечение ===== */
.cursor-glow{
  position:fixed;
  top:0;
  left:0;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(59,130,246,0.16), transparent 70%);
  pointer-events:none;
  z-index:2;
  transform:translate(-50%,-50%);
  mix-blend-mode:screen;
  will-change:transform;
  opacity:0;
  transition:opacity .4s ease;
}
.cursor-glow.active{opacity:1;}
@media (hover:none){ .cursor-glow{display:none;} }

.container{
  position:relative;
  z-index:1;
  max-width:1100px;
  margin:0 auto;
  padding:0 24px;
}

/* ===== header ===== */
header{
  position:sticky;
  top:0;
  z-index:20;
  backdrop-filter:blur(12px);
  background:rgba(11,18,32,0.7);
  border-bottom:1px solid var(--lx-border);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:16px 24px;
  max-width:1100px;
  margin:0 auto;
}
.logo{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:20px;
  font-weight:800;
  letter-spacing:0.5px;
  flex-shrink:0;
}
.logo-icon{
  width:22px;
  height:22px;
  flex-shrink:0;
}
.logo-text{
  background:linear-gradient(135deg,#60a5fa,#3b82f6 40%,#f59e0b);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:28px;
  margin:0 auto;
}
.nav-link{
  font-weight:600;
  font-size:14px;
  color:var(--lx-muted);
  transition:color .2s;
  white-space:nowrap;
}
.nav-link:hover,
.nav-link.active{
  color:var(--lx-text-strong);
}
.nav-cta{
  padding:9px 18px;
  border-radius:10px;
  background:var(--lx-gradient);
  font-weight:600;
  font-size:14px;
  box-shadow:0 0 0 rgba(59,130,246,0);
  transition:box-shadow .25s, transform .2s;
  flex-shrink:0;
}
.nav-cta:hover{
  box-shadow:0 0 24px rgba(59,130,246,0.55);
  transform:translateY(-1px);
}
.nav-burger{
  display:none;
  width:36px;
  height:36px;
  border:1px solid var(--lx-border);
  border-radius:9px;
  background:var(--lx-card);
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  flex-shrink:0;
}
.nav-burger span{
  width:16px;
  height:2px;
  background:var(--lx-text);
  border-radius:2px;
  transition:transform .2s, opacity .2s;
}
.nav-burger.open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-burger.open span:nth-child(2){opacity:0;}
.nav-burger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.nav-mobile-panel{
  display:none;
  flex-direction:column;
  gap:2px;
  padding:8px 24px 18px;
  border-top:1px solid var(--lx-border);
}
.nav-mobile-panel .nav-link{
  padding:12px 4px;
  border-bottom:1px solid var(--lx-border);
  color:var(--lx-text);
}
.nav-mobile-panel .nav-link:last-child{border-bottom:none;}
.nav-mobile-panel.open{display:flex;}

@media (max-width:760px){
  .nav-links{display:none;}
  .nav-burger{display:flex;}
}

/* ===== buttons ===== */
.btn-primary{
  padding:15px 32px;
  border-radius:12px;
  background:var(--lx-gradient);
  font-weight:700;
  font-size:16px;
  display:inline-block;
  box-shadow:0 8px 30px rgba(59,130,246,0.25);
  transition:transform .2s, box-shadow .25s;
  border:none;
  cursor:pointer;
  color:var(--lx-text);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 40px rgba(59,130,246,0.5);
}
.btn-primary:disabled{
  opacity:0.5;
  cursor:not-allowed;
  transform:none;
  box-shadow:none;
}
.btn-ghost{
  padding:15px 32px;
  border-radius:12px;
  border:1px solid var(--lx-border);
  font-weight:600;
  font-size:16px;
  color:var(--lx-text);
  transition:border-color .2s, background .2s;
  background:transparent;
  cursor:pointer;
}
.btn-ghost:hover{
  border-color:var(--lx-accent);
  background:var(--lx-accent-soft);
}
.btn-small{
  padding:9px 18px;
  font-size:14px;
  border-radius:10px;
}
.magnetic{
  transition:transform .15s ease-out, box-shadow .25s, border-color .2s, background .2s;
}

/* ===== reveal ===== */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .7s ease, transform .7s ease;
}
.reveal.in{
  opacity:1;
  transform:translateY(0);
}

/* ===== section heading ===== */
.section-head{
  text-align:center;
  max-width:620px;
  margin:0 auto 48px;
}
.section-head h1,
.section-head h2{
  font-size:clamp(28px,4vw,42px);
  font-weight:800;
  margin-bottom:14px;
  letter-spacing:-0.5px;
}
.section-head p{
  color:var(--lx-muted);
  font-size:16px;
}

/* ===== page hero (курсы/вакансии) ===== */
.page-hero{
  padding:64px 0 8px;
  text-align:center;
}

/* ===== filters ===== */
.filters{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:center;
  padding:0 0 44px;
}
.filter-chip{
  padding:9px 16px;
  border-radius:999px;
  border:1px solid var(--lx-border);
  background:var(--lx-card);
  color:var(--lx-muted);
  font-size:13.5px;
  font-weight:600;
  cursor:pointer;
  transition:border-color .2s, color .2s, background .2s;
}
.filter-chip:hover{
  border-color:var(--lx-accent);
  color:var(--lx-text-strong);
}
.filter-chip.active{
  border-color:var(--lx-accent);
  background:var(--lx-accent-soft);
  color:var(--lx-text-strong);
}

/* ===== card grid (курсы / вакансии) ===== */
.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:20px;
  padding-bottom:80px;
}
.entity-card{
  background:var(--lx-card);
  border:1px solid var(--lx-border);
  border-radius:18px;
  overflow:hidden;
  cursor:pointer;
  transition:transform .25s, border-color .25s, box-shadow .25s;
  display:flex;
  flex-direction:column;
}
.entity-card:hover{
  transform:translateY(-4px);
  border-color:var(--lx-accent);
  box-shadow:0 12px 40px rgba(59,130,246,0.15);
}
.entity-cover{
  width:100%;
  aspect-ratio:16/9;
  background:linear-gradient(135deg, rgba(59,130,246,0.18), rgba(245,158,11,0.12));
  background-size:cover;
  background-position:center;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:34px;
}
.entity-body{
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
}
.entity-tags{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
}
.entity-tag{
  padding:4px 10px;
  border-radius:999px;
  background:var(--lx-accent-soft);
  color:var(--lx-accent-2);
  font-size:12px;
  font-weight:700;
}
.entity-card h3{
  font-size:17px;
  font-weight:700;
  color:var(--lx-text-strong);
}
.entity-desc{
  color:var(--lx-muted);
  font-size:14px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.entity-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:10px;
  border-top:1px solid var(--lx-border);
  font-size:13px;
  color:var(--lx-muted);
}
.entity-price{
  color:var(--lx-text-strong);
  font-weight:700;
}

/* ===== skeleton / состояния загрузки ===== */
.skeleton-card{
  background:var(--lx-card);
  border:1px solid var(--lx-border);
  border-radius:18px;
  overflow:hidden;
}
.skeleton-block{
  background:linear-gradient(90deg, var(--lx-border) 25%, rgba(148,163,184,0.18) 37%, var(--lx-border) 63%);
  background-size:400% 100%;
  animation:skeletonShine 1.4s ease-in-out infinite;
}
@keyframes skeletonShine{
  0%{background-position:100% 50%;}
  100%{background-position:0 50%;}
}
.skeleton-card .entity-cover{background:none;}
.skeleton-card .entity-cover.skeleton-block{aspect-ratio:16/9;}
.skeleton-line{
  height:12px;
  border-radius:6px;
  margin-bottom:8px;
}
.state-box{
  text-align:center;
  padding:60px 24px;
  color:var(--lx-muted);
}
.state-box h3{
  color:var(--lx-text-strong);
  margin-bottom:8px;
  font-size:18px;
}

/* ===== модалка ===== */
.modal-overlay{
  position:fixed;
  inset:0;
  z-index:100;
  background:rgba(5,9,18,0.72);
  backdrop-filter:blur(4px);
  display:none;
  align-items:flex-start;
  justify-content:center;
  padding:64px 20px;
  overflow-y:auto;
}
.modal-overlay.open{display:flex;}
.modal-box{
  background:var(--lx-card);
  border:1px solid var(--lx-border);
  border-radius:22px;
  max-width:640px;
  width:100%;
  padding:0 0 32px;
  position:relative;
  animation:modalIn .25s ease;
}
@keyframes modalIn{
  from{opacity:0; transform:translateY(16px);}
  to{opacity:1; transform:translateY(0);}
}
.modal-cover{
  width:100%;
  aspect-ratio:16/9;
  background-size:cover;
  background-position:center;
  border-radius:22px 22px 0 0;
  background:linear-gradient(135deg, rgba(59,130,246,0.2), rgba(245,158,11,0.14));
}
.modal-close{
  position:absolute;
  top:16px;
  right:16px;
  width:36px;
  height:36px;
  border-radius:50%;
  border:1px solid var(--lx-border);
  background:rgba(11,18,32,0.7);
  color:var(--lx-text);
  font-size:18px;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.modal-content{
  padding:28px 32px 0;
}
.modal-content h2{
  font-size:24px;
  font-weight:800;
  margin-bottom:12px;
}
.modal-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:16px;
}
.modal-desc{
  color:var(--lx-muted);
  font-size:15px;
  white-space:pre-line;
  margin-bottom:24px;
}
.modal-facts{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:14px;
  margin-bottom:28px;
  padding:18px;
  background:rgba(255,255,255,0.02);
  border:1px solid var(--lx-border);
  border-radius:14px;
}
.modal-fact-label{
  font-size:12px;
  color:var(--lx-muted);
  margin-bottom:4px;
}
.modal-fact-value{
  font-size:15px;
  font-weight:700;
  color:var(--lx-text-strong);
}

footer{
  text-align:center;
  padding:32px 24px 48px;
  color:var(--lx-muted);
  font-size:13px;
  border-top:1px solid var(--lx-border);
  position:relative;
  z-index:1;
}
footer a{color:var(--lx-accent-2);}