:root{
  --bg:#050505;
  --bg-glass:rgba(15,15,20,0.55);

  --text:#ffffff;
  --text-dim:rgba(255,255,255,0.65);

  --violet:#7c3aed;
  --violet-soft:#a78bfa;
  --violet-deep:#4c1d95;
  --violet-glow:rgba(124,58,237,0.45);

  --border:rgba(255,255,255,0.08);

  --radius:20px;
  --radius-sm:14px;

  --shadow-md:0 20px 50px rgba(0,0,0,0.55);

  --transition:all .35s cubic-bezier(.4,0,.2,1);
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

body{
  font-family:Inter, sans-serif;
  background:
    radial-gradient(900px 500px at 20% -10%, rgba(124,58,237,.22), transparent 60%),
    radial-gradient(700px 400px at 80% -15%, rgba(124,58,237,.15), transparent 55%),
    var(--bg);
  color:var(--text);
  min-height:100vh;
}

.page-wrap{
  width:100%;
  max-width:1500px;
  margin:0 auto;
  padding:120px 32px 60px;
}

.header{
  margin-bottom:28px;
}

.header h1{
  font-size:clamp(1.8rem,2.4vw,2.4rem);
  font-weight:900;
  letter-spacing:-.02em;
  background:linear-gradient(120deg,#fff 40%,var(--violet-soft));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  text-shadow:0 20px 60px var(--violet-glow);
  margin-bottom:6px;
}

.header p{
  font-size:.85rem;
  color:var(--violet-soft);
  font-weight:700;
}

.layout{
  display:flex;
  gap:32px;
  align-items:flex-start;
}

.sidebar{
  width:260px;
  background:var(--bg-glass);
  border:1px solid var(--border);
  border-radius:var(--radius);
  backdrop-filter:blur(26px);
  box-shadow:var(--shadow-md);
  padding:16px;
  position:sticky;
  top:120px;
}

.section-label{
  font-size:.65rem;
  letter-spacing:.15em;
  color:rgba(255,255,255,.35);
  font-weight:800;
  padding:18px 14px 8px;
  text-transform:uppercase;
}

.nav-item{
  width:100%;
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px 14px;
  border-radius:var(--radius-sm);
  font-size:.9rem;
  font-weight:600;
  color:rgba(255,255,255,.72);
  cursor:pointer;
  transition:var(--transition);
  border:1px solid transparent;
  background:transparent;
  text-align:left;
  margin-bottom:5px;
}

.nav-item:hover{
  background:rgba(255,255,255,.05);
  color:#fff;
}

.nav-item.active{
  background:linear-gradient(135deg, rgba(124,58,237,.25), rgba(76,29,149,.35));
  border-color:rgba(167,139,250,.35);
  color:#fff;
  box-shadow:0 10px 30px rgba(124,58,237,.18);
}

.nav-item img{
  width:18px;
  height:18px;
  flex:0 0 18px;
  object-fit:contain;
  display:block;
  filter:brightness(0) invert(1);
}

.nav-item svg{
  width:18px;
  height:18px;
  flex:0 0 18px;
  display:block;
  stroke:currentColor;
  opacity:.85;
  transition:var(--transition);
}

.nav-item:hover svg{
  opacity:1;
}

.nav-item.active svg{
  opacity:1;
}

.main{
  flex:1;
  min-width:0;
}

@media(max-width:900px){
  .layout{
    flex-direction:column;
  }

  .sidebar{
    position:static;
    width:100%;
  }

  .page-wrap{
    padding:110px 20px 50px;
  }
}